JP6865617B2 - Terminal equipment - Google Patents

Description

The present invention relates to a terminal device that samples data from a sensor attached to a monitoring target.

For example, in Japanese Patent No. 5591869 (Patent Document 1), as a terminal device of this type, instead of storing and transmitting all the data acquired from the sensor, the data is acquired at predetermined sampling cycles during each cycle. Statistical processing is performed on the sensor data, and at least one of the maximum value, minimum value, and average value is acquired and saved, and this is transmitted to the management server side to increase the amount of data saved on the terminal device side. Some are listed to reduce and save memory space.

Japanese Patent No. 5591869

Generally, in the monitoring system using the conventional terminal device, the data collected by the monitoring server that collects the data from the terminal device is determined, and the state of the monitoring target is determined. However, what is collected by the monitoring server is the data that has been statistically processed by the terminal device due to the amount of data transmitted, and data fluctuations that are buried in the process of statistical processing are not collected by the monitoring server and are not collected by the monitoring server. However, it is not possible to detect a defect in the device that causes such data fluctuations.

Therefore, it is desired to realize a terminal device that can suitably determine the state of the monitoring target on the terminal device side.

The terminal device according to the present invention is
A terminal device that samples data from a sensor attached to a monitoring target.
A communication unit that can communicate with the monitoring device,
A processing data sampling unit that samples data from the sensor as processing data at a predetermined processing sampling cycle, and
A first arithmetic processing unit that calculates a determination index value based on the time-series processing data sampled during each first sampling cycle for each first sampling cycle longer than the processing sampling cycle.
A determination unit that determines whether or not there is an abnormality in the monitoring target based on the determination index value calculated by the first arithmetic processing unit.
An abnormal signal generation unit that generates an abnormal signal when the determination unit determines that there is an abnormality,
When the abnormal signal is generated by the abnormal signal generation unit, a first transmission control unit that causes the communication unit to transmit the abnormal signal to the monitoring device.
A first storage unit that accumulates the determination index value calculated by the first calculation processing unit, and a first storage unit.
An event signal acquisition unit that acquires an event signal indicating that a predetermined event has occurred in the monitoring target, and an event signal acquisition unit.
When the event signal acquisition unit acquires the event signal, it is calculated based on the processing data sampled in the period corresponding to the event signal among the determination index values stored in the first storage unit. A transmission data storage unit that acquires and stores the above-mentioned judgment index value,
Data storage that stores data storage range information that sets the range of the period during which the processing data, which is the basis of the determination index value to be stored by the transmission data storage unit, is set for each type of event signal. Range setting part and
Based on the data storage range information, the transmission data storage unit is based on the determination index value to be stored by the transmission data storage unit according to the type of the event signal acquired by the event signal acquisition unit. It is provided with a data storage control unit that stores the range of the period in which the processing data has been sampled.
The first arithmetic processing unit is
For each of the first sampling cycles, a smoothing process is performed on the time-series processing data sampled during each first sampling cycle, and the value obtained by the processing data and the corresponding smoothing process. The difference value group acquisition unit that acquires the difference value group obtained for each processing data, and the difference value group acquisition unit.
As the determination index value, a variance value calculation unit for calculating the variance value in the difference value group acquired by the difference value group acquisition unit is provided for each first sampling cycle .
The first transmission control unit causes the communication unit to transmit at least a part of the determination index value stored in the first storage unit to the monitoring device only when a predetermined transmission condition is satisfied. Moreover, when the transmission condition is satisfied, the communication unit is made to transmit the determination index value stored in the transmission data storage unit to the monitoring device .

For example, depending on the type of abnormality to be monitored, the fluctuation of the processing data may be large, and the large fluctuation of the processing data will increase the variance value. Therefore, according to this configuration, since the variance value is calculated as the determination index value, it is possible to detect an abnormality of the monitoring target that increases the fluctuation of the processing data. In addition, since the number of data required to calculate such a dispersion value becomes large, if the monitoring device tries to calculate this, the amount of data transmission increases, the data communication charge increases, and a large amount of data can be transmitted. Various communication means are required and the device cost increases, but by performing this with the terminal device, it is possible to avoid an increase in data communication fee and device cost. Further, the monitoring device can obtain the determination index value stored in the first storage unit when necessary. Further, when a signal indicating that an event has occurred is acquired, the determination index value corresponding to the signal is stored, so that the determination index value to be transmitted to the monitoring device can be made appropriate. In addition, for example, what is required as data at the start of operation is data within a predetermined period after the start of operation, and what is required as data at the end of operation is data within a predetermined period before the end of operation. The range of data to be stored by the transmission data storage unit differs depending on the type of event signal. On the other hand, according to this configuration, the data storage control unit can make the transmission data storage unit store the determination index value in an appropriate range according to the type of the event signal based on the data storage range information.

As one embodiment, the first arithmetic processing unit performs frequency analysis on the time-series processing data sampled during each first sampling cycle for each first sampling cycle, and performs the determination index value. As the determination index value, the dispersion value calculation unit calculates the dispersion value, the analysis value calculation unit calculates the analysis value, or both. A calculation setting unit for setting whether to perform calculation is provided, and the first calculation processing unit calculates one or both of the dispersion value and the analysis value as the determination index value according to the setting of the calculation setting unit. Then it is suitable.

According to this configuration, it is possible to detect an abnormality related to an analysis value such as changing the natural frequency of the sensor data due to the occurrence of the abnormality. Further, as with the dispersion value, the number of data required to calculate the analysis value by frequency analysis becomes large, but by performing this on the terminal device, it is possible to avoid an increase in data communication charges and device costs.

The terminal device according to the present invention is
It is a terminal device that samples from a sensor attached to the monitoring target.
A communication unit that can communicate with the monitoring device,
A processing data sampling unit that samples data from the sensor as processing data at a predetermined processing sampling cycle, and
A first arithmetic processing unit that calculates a determination index value based on the time-series processing data sampled during each first sampling cycle for each first sampling cycle longer than the processing sampling cycle.
A determination unit that determines whether or not there is an abnormality in the monitoring target based on the determination index value calculated by the first arithmetic processing unit.
An abnormal signal generation unit that generates an abnormal signal when the determination unit determines that there is an abnormality,
When the abnormal signal is generated by the abnormal signal generation unit, a first transmission control unit that causes the communication unit to transmit the abnormal signal to the monitoring device.
A first storage unit that accumulates the determination index value calculated by the first calculation processing unit, and a first storage unit.
An event signal acquisition unit that acquires an event signal indicating that a predetermined event has occurred in the monitoring target, and an event signal acquisition unit.
When the event signal acquisition unit acquires the event signal, it is calculated based on the processing data sampled in the period corresponding to the event signal among the determination index values stored in the first storage unit. A transmission data storage unit that acquires and stores the above-mentioned judgment index value,
Data storage that stores data storage range information that sets the range of the period during which the processing data, which is the basis of the determination index value to be stored by the transmission data storage unit, is set for each type of event signal. Range setting part and
Based on the data storage range information, the transmission data storage unit is based on the determination index value to be stored by the transmission data storage unit according to the type of the event signal acquired by the event signal acquisition unit. It is provided with a data storage control unit that stores the range of the period in which the processing data has been sampled.
The first arithmetic processing unit, for each of the first sampling period, performs frequency analysis on-series the processing data when sampled during each first sampling period, calculating the analysis value as the determination index value And
The first transmission control unit causes the communication unit to transmit at least a part of the determination index value stored in the first storage unit to the monitoring device only when a predetermined transmission condition is satisfied. Moreover, when the transmission condition is satisfied, the communication unit is made to transmit the determination index value stored in the transmission data storage unit to the monitoring device .

According to this configuration, it is possible to detect an abnormality related to an analysis value such as changing the natural frequency of the sensor data due to the occurrence of the abnormality. Further, as with the dispersion value, the number of data required to calculate the analysis value by frequency analysis becomes large, but by performing this on the terminal device, it is possible to avoid an increase in data communication charges and device costs. Further, the monitoring device can obtain the determination index value stored in the first storage unit when necessary. Further, when a signal indicating that an event has occurred is acquired, the determination index value corresponding to the signal is stored, so that the determination index value to be transmitted to the monitoring device can be made appropriate. In addition, for example, what is required as data at the start of operation is data within a predetermined period after the start of operation, and what is required as data at the end of operation is data within a predetermined period before the end of operation. The range of data to be stored by the transmission data storage unit differs depending on the type of event signal. On the other hand, according to this configuration, the data storage control unit can make the transmission data storage unit store the determination index value in an appropriate range according to the type of the event signal based on the data storage range information.

Hereinafter, preferred embodiments of these terminal devices according to the present invention will be described. However, the scope of the present invention is not limited by the preferred embodiments described below.

One embodiment is an event data acquisition unit that acquires event data indicating that a predetermined event has occurred in the monitoring target, and the event when the event data acquisition unit continuously acquires the event data for a predetermined time. It is preferable to include an event signal generation unit that generates a signal.

According to this configuration, since the event signal is generated only when the event data is continuously acquired for a predetermined time, it is possible to suppress the accidental generation of the event signal.

As one aspect, it is preferable that the first transmission control unit determines that the transmission condition is satisfied when the transmission data storage unit newly stores the determination index value.

According to this configuration, the event signal is acquired and the data stored in the monitoring device is transmitted as soon as the data for transmission is stored, so that the monitoring device can immediately obtain the necessary data when necessary. You can get it.

As one aspect, it is preferable that the first transmission control unit determines that the transmission condition is satisfied when the communication unit receives a predetermined data request signal.

According to this configuration, data is transmitted in response to a request from the monitoring device side, so that data can be acquired when necessary.

As one embodiment, the second sampling cycle corresponding to the determination index value is based on the time-series processing data sampled during each second sampling cycle for each second sampling cycle longer than the first sampling cycle. A second arithmetic processing unit that calculates an index value, a second storage unit that accumulates the second index value acquired by the second arithmetic processing unit, and a communication unit that periodically or by the communication unit are predetermined. When the data request signal is received, the communication unit is provided with a second transmission control unit that causes the monitoring device to transmit at least a part of the second index value stored in the second storage unit. Suitable.

According to this configuration, it is necessary to send a long-period second index value to the monitoring device to monitor the monitoring target, and to send a more detailed short-period judgment index value to the monitoring device when necessary. Since necessary data is transmitted only occasionally, it is possible to monitor the monitoring target in a suitable form.

As one embodiment, the determination index value is acquired, and statistical processing is performed based on the time-series determination index value acquired during each third sampling cycle for each third sampling cycle longer than the first sampling cycle. The index value sampling unit for acquiring the index value statistical value obtained by the statistical processing, the third storage unit for accumulating the index value statistical value acquired by the index value sampling unit, and the third storage unit periodically. Or, when the communication unit receives a predetermined data request signal, the communication unit causes the communication unit to transmit at least a part of the index value statistical values stored in the third storage unit to the monitoring device. It is preferable to include a control unit.

As one embodiment, in the statistical processing in the index value sampling unit, the setting of the statistical processing setting unit can be switched between the statistical processing setting unit in which one or a plurality of types of statistical values to be acquired as the index value statistical value can be set. It is preferable that the index value sampling unit acquires the index value statistical value according to the setting of the statistical processing setting unit.

As one embodiment, it is preferable that the statistical processing setting unit can set at least one or two or more of the maximum value, the minimum value, and the average value as the statistical value to be acquired.

According to these configurations, long-period sampling data related to the determination index value can be acquired.

One embodiment includes an operation signal acquisition unit that acquires an operation signal indicating that the monitoring target is operating, and the index value sampling unit is when the operation signal acquisition unit acquires the operation signal. It is preferable to acquire the determination index value and acquire the index value statistical value only for the first time.

When the sampling cycle is sufficiently long, it is sufficient to monitor only the data during operation, and it is possible to avoid the acquisition of unnecessary data when the operation is stopped, so that the number of sampling data to be stored can be effectively reduced.

The figure which shows the monitoring system which concerns on this Embodiment Block diagram showing a terminal device according to this embodiment Block diagram showing a short-time arithmetic processing unit according to this embodiment A graph showing the time change of processing data and the moving average of processing data in a certain cycle Graph showing the residual from the moving average in FIG. Histogram showing the distribution of the residuals in FIG. Graph showing the difference between obtaining the average value and obtaining the maximum value by statistical processing

An embodiment of the terminal device according to the present invention will be described with reference to the drawings. Hereinafter, a monitoring system incorporating the terminal device 100 according to the present embodiment will be described. First, the monitoring system according to the present embodiment is provided in each plant or equipment in order to monitor the plant provided in the monitored area and the infrastructure equipment for supplying and processing water, electricity, gas, etc. It is subject to monitoring in each plant and equipment, such as vibration, current value, pressure, etc. in the equipment, temperature, humidity, water level of dams, flow rate of rivers, wind speed, rainfall, shaking, etc. 1 Alternatively, the terminal device 100 is installed at a plurality of devices or points for measuring the temperature, etc., and the data sampled by the terminal device 100 is collected in the monitoring server 1 to monitor the plant or equipment in the monitored area. Assuming a system. Then, as shown in FIG. 1, this monitoring system is attached to one or more devices to be monitored in each plant or equipment, a point for measuring temperature, etc., and provides information on the monitoring target. The terminal device 100 that samples the sensor data 3 from the detected sensor and the event data 4 related to the event (start or end of operation, device failure, etc.) that occurred in the monitored object, and the data of each plant or equipment from each terminal device 100. It consists of a monitoring server (corresponding to a monitoring device) 1 that monitors each plant and equipment by acquiring data via a network 2 such as a telephone line or the Internet. That is, in this monitoring system, the data sampled by the terminal device 100 is aggregated in the monitoring server 1, and the monitoring server 1 can collectively monitor the plants and equipment in the monitored area.

Next, the terminal device 100 according to the present embodiment will be described with reference to FIGS. First, the terminal device 100 according to the present embodiment roughly statistics the data from the data conversion unit 101 that acquires the sensor data 3 from the sensor attached to the monitoring target and converts it into a numerical value, and the data from the data conversion unit 101. The statistical value sampling unit 102 that processes and samples the statistical value, the index value calculation unit 103 that calculates the judgment index value for determining the state of the monitoring target from the data from the data conversion unit 101, and the event data 4. It has an event data processing unit 104 that processes the data, and a communication unit 105 that can communicate with the monitoring server 1. Then, the terminal device 100 processes the event data 4 by the event data processing unit 104 while sampling the sensor data 3 from the monitoring target by the statistical value sampling unit 102 and transmitting it to the monitoring server 1 via the communication unit 105. Events that occur in the monitoring target are also transmitted to the monitoring server 1. Further, the terminal device 100 determines the state of the monitoring target by obtaining the determination index value from the sensor data 3 by the index value calculation unit 103, and when it is determined that there is an abnormality, the monitoring server 1 indicates that the monitoring target has an abnormality. It is designed to be sent to. That is, the terminal device 100 has a data collection function that processes sensor data 3 and event data 4 related to the monitoring target and transmits them to the monitoring server 1, and monitoring that transmits the abnormality to the monitoring server 1 when there is an abnormality in the monitoring target. It has a function. Hereinafter, each part will be described in detail.

First, the data conversion unit 101 is related to each monitoring target such as vibration, current value, pressure, etc. in the device as the monitoring target, and the state of the surrounding environment such as temperature, humidity, wind speed, and rainfall at the monitoring target point. Sensor data 3 is acquired from various sensors at a predetermined processing sampling cycle (for example, 10 milliseconds cycle), converted into numerical values, and sampled as processing data in the statistical value sampling unit 102 and the index value calculation unit 103. To do. That is, the data conversion unit 101 functions as a processing data sampling unit that samples the sensor data 3 from the sensor as processing data at a predetermined processing sampling cycle.

The statistical value sampling unit 102 statistically processes the processing data sampled by the data conversion unit 101 in a plurality of sampling cycles, saves the statistical values obtained by the statistical processing, and stores the statistical values obtained in each cycle into predetermined values. It is transmitted to the monitoring server 1 at the timing. Then, in the present embodiment, the statistical value sampling unit 102, as a functional unit, has a data processing unit 106 that statistically processes processing data for each of the subsequent sampling units 109, 113, 116, a data processing unit 106, and each. Statistical processing setting unit 107 that sets statistical processing to be performed by sampling units 109, 113, 116, statistical processing switching unit 108 that can switch the settings of statistical processing setting unit 107, and statistical processing of processing data at different cycles. Each sampling unit 109, 113, 116 for obtaining statistical values, each sampling storage unit 110, 114, 117 for accumulating the statistical values obtained by each sampling unit 109, 113, 116, and each sampling storage. The sampling transmission control units 111, 115, 118 that transmit the statistical values stored in the units 110, 114, 117 to the communication unit 105, respectively, and the event signal acquisition unit that acquires various event signals from the event data processing unit 104. 112, an operation signal acquisition unit 119 that acquires an operation signal from the event data processing unit 104, a determination unit 145 that determines an abnormality based on the long-time sampling data acquired by the long-time sampling unit 113, and a determination unit 145. It is provided with an abnormality signal generation unit 146 that generates an abnormality signal indicating that there is an abnormality in the monitoring target based on the determination result of the above. Hereinafter, each functional unit will be described.

As preprocessing for statistical processing in each sampling unit 109, 113, 116, the data processing unit 106 is longer than the above-mentioned processing sampling cycle, is the same as the short-time sampling cycle described later, or is shorter than the short-time sampling cycle. Also, the processing data is statistically processed in a short data processing cycle (for example, 0.1 second cycle). Then, the processing data after being processed by the data processing unit 106 is sent to the sampling units 109, 113, 116, and the sampling units 109, 113, 116 further perform statistical processing.

The statistical processing setting unit 107 is for setting the statistical processing in the data processing unit 106 and the sampling units 109, 113, 116, and in the statistical processing in the data processing unit 106 and the sampling units 109, 113, 116, One or a plurality of types of statistical values to be acquired as data to be sent to each sampling unit 109, 113, 116 or each sampling data (short-time sampling data, long-time sampling data, tendency management sampling data) can be set. Then, in the present embodiment, the statistical processing setting unit 107 can set any or two or more of the maximum value, the minimum value, and the average value as the statistical value to be acquired. The statistical value that can be set by the statistical processing setting unit 107 is not limited to the maximum value, the minimum value, and the average value, and other statistical values may be appropriately set. For example, the fluctuation range of the maximum value and the minimum value may be used as a statistical value, or even if the average value is set to be acquired, when there is data larger or smaller than other values during the sampling period. May be set to change the statistical value to be acquired according to the data to be processed, such as acquiring the maximum value or the minimum value together with the average value. Further, the statistical processing setting unit 107 also changes the cycle (data processing cycle, short-time sampling cycle, long-time sampling cycle, trend management sampling cycle) in which the data processing unit 106 and the sampling units 109, 113, 116 perform statistical processing. It is possible. It is possible to set the type of statistical value to be acquired separately for each of the data processing unit 106 and the sampling units 109, 113, and 116.

The statistical processing switching unit 108 can switch the setting of the statistical processing setting unit 107. Specifically, in the present embodiment, the statistical processing switching unit 108 is instructed via the communication unit 105 to perform statistical processing. The setting of the setting unit 107 can be switched. For example, the monitoring server 1 may transmit an instruction to the statistical processing switching unit 108, or another device may send an instruction to the statistical processing switching unit 108. Further, instead of instructing the statistical processing switching unit 108 via the communication unit 105, the statistical processing switching unit 108 may be configured with a switch or the like that can be operated from the outside so that the instruction can be directly input to the terminal device 100. Good.

The short-time sampling unit 109 acquires short-time sampling data according to the setting of the statistical processing setting unit 107 every short-time sampling cycle (for example, 1 second to 10-second cycle) longer than the processing sampling cycle. Specifically, when the short-time sampling cycle set by the statistical processing setting unit 107 is the same as the data processing cycle set by the data processing unit 106, the short-time sampling unit 109 is processed by the data processing unit 106. After that, the processing data is acquired as short-time sampling data. On the other hand, when the short-time sampling cycle set by the statistical processing setting unit 107 is longer than the data processing cycle set by the data processing unit 106, the short-time sampling unit 109 uses the statistical processing setting unit 109 for each short-time sampling cycle. According to the statistical processing setting of 107, statistical processing is performed based on the processing data sampled during each short-time sampling cycle (in the present embodiment, the processing data after being processed by the data processing unit 106). One or more statistical values obtained by statistical processing are acquired as short-time sampling data.

The short-time sampling storage unit 110 stores the short-time sampling data acquired by the short-time sampling unit 109 in a time-series and cumulative manner. That is, the short-time sampling storage unit 110 stores the trend data sampled in a short cycle by the short-time sampling unit 109. In the present embodiment, the short-time sampling storage unit 110 is a ring buffer capable of storing a predetermined number of short-time sampling data (for example, 240 points, which is 4 to 40 minutes when converted into time), and new data is acquired. Old data is deleted each time, and only the most recently required data is stored. As a result, the number of short-time sampling data to be stored is kept to the minimum necessary. Then, as will be described later, since the necessary data can be stored by the transmission data storage unit 111a, there is no inconvenience even if the old data is deleted.

The short-time sampling transmission control unit 111 transmits at least a part of the short-time sampling data stored in the communication unit 105 to the short-time sampling storage unit 110 to the monitoring server 1 only when a predetermined transmission condition is satisfied. It is designed to let you. Specifically, when the event signal acquisition unit 112 acquires the event signal, the short-time sampling transmission control unit 111 responds to the event signal among the short-time sampling data stored in the short-time sampling storage unit 110. A transmission data storage unit 111a that acquires and stores short-time sampling data in the range, and a monitoring server that monitors the short-time sampling data stored in the transmission data storage unit 111a in the communication unit 105 when the transmission conditions are satisfied. It is provided with a transmission control unit 111b for transmitting to 1. That is, when some event such as a failure or operation occurs by the transmission data storage unit 111a, the corresponding data is stored, and when the transmission condition is satisfied, the monitoring server 1 side (monitoring server 1 or monitoring server 1) is stored. By transmitting the stored data to the terminal side to be used), detailed sensor data (short-time sampling data) in the event of a failure or operation-related event can be transmitted to the monitoring server 1 side. It is possible. In particular, even when the communication unit 105 is set to receive a predetermined data request signal from the monitoring server 1 side as a transmission condition, some event such as a failure or operation may occur due to the communication time or communication failure. Even if there is a large time lag between the occurrence and the reception of the data request signal from the monitoring server 1, the data transmitted to the monitoring server 1 can be set as the data at the desired timing.

Specifically, in the present embodiment, the transmission data storage unit 111a stores the short-time sampling data stored in the short-time sampling storage unit 110 when the event signal acquisition unit 112 acquires the event signal. It has become. That is, the short-time sampling storage unit 110 deletes the old data every time new data is acquired, and the data stored in real time is updated. However, the transmission data storage unit 111a displays the data when an event occurs. The data in the required state is stored in the transmission data storage unit 111a. The transmission data storage unit 111a may update the data to be stored each time a new event signal is acquired, or may be transmitted when the data stored by the transmission control unit 111b is transmitted. Data may be deleted. Further, the transmission data storage unit 111a makes it possible to store the data stored in the short-time sampling storage unit 110 at a plurality of time points, and each time a new event signal is acquired, the event signal type and the event signal are acquired. The time and the like may be associated with the data to be stored and stored separately. In this case, every time a new event signal is acquired, the oldest stored data may be deleted and the new stored data may be stored instead. Then, when it is determined that the transmission condition is satisfied, the transmission control unit 111b may transmit the data specified from the monitoring server 1 side or the latest one or a plurality of stored data at a plurality of time points. However, you may send all the stored data.

The transmission control unit 111b also functions as a transmission condition setting unit capable of setting transmission conditions, and various transmission conditions can be set. In the present embodiment, in the transmission control unit 111b, the transmission data storage unit 111a newly stores the short-time sampling data (that is, the event signal acquisition unit 112 acquires the event signal), and the communication unit 105 It is possible to set either or both of receiving a predetermined data request signal from the monitoring server 1 side. That is, when the transmission control unit 111b newly stores the short-time sampling data according to the setting of the transmission condition, or when the communication unit 105 receives the predetermined data request signal, the transmission condition Is to be determined to be satisfied. Then, in the present embodiment, the transmission condition can be switched by instructing the transmission control unit 111b via the communication unit 105. For example, the monitoring server 1 may transmit the instruction to the transmission control unit 111b, or another device may send the instruction to the transmission control unit 111b. Further, instead of instructing the transmission control unit 111b via the communication unit 105, the instruction may be directly input to the transmission control unit 111b by an externally operable switch or the like provided in the terminal device 100. Further, it may be possible to set that the event signal acquisition unit 112 has acquired a specific type of event signal as a transmission condition, and it may be possible to change whether or not the transmission condition is satisfied depending on the type of event signal. For example, if the event signal is urgent failure data or the like, the transmission condition is set so that the event signal acquisition unit 112 transmits the data when the event signal is acquired, and if the event signal is urgent operation data or the like, monitoring is performed. Set the transmission conditions so that data is transmitted according to the request from the server 1 side. The transmission conditions are not limited to those described above, and other conditions may be set.

The long-time sampling unit 113 has processing data (for example, a 1-minute cycle) sampled during each long-time sampling cycle according to the setting of the statistical processing setting unit 107 for each long-time sampling cycle (for example, 1-minute cycle) longer than the short-time sampling cycle. In the present embodiment, statistical processing is performed based on the processing data after being processed by the data processing unit 106), and one or a plurality of statistical values obtained by the statistical processing are acquired as long-time sampling data. The long-time sampling unit 113 may perform statistical processing using the short-time sampling data sampled during each long-time sampling cycle, or may perform statistical processing using the processing data. , Whether or not statistical processing is performed using short-time sampling data may be switched according to the setting of the statistical processing setting unit 107. That is, the type of monitoring data can be flexibly selected by combining the data types of the data processing unit 106, the short-time sampling unit 109, and the long-time sampling unit 113.

The long-time sampling storage unit 114 stores the long-time sampling data acquired by the long-time sampling unit 113 in a time-series and cumulative manner. That is, the long-time sampling storage unit 114 stores the trend data periodically sampled by the long-time sampling unit 113. In the present embodiment, the long-time sampling storage unit 114 is a ring buffer capable of storing a predetermined number (for example, 2880 points, 48 hours when converted into time) of long-term sampling data, and new data is acquired. Old data is deleted each time, and only the most recent required data is stored. As a result, the number of long-time sampling data to be stored is kept to the minimum necessary.

The long-time sampling transmission control unit 115 periodically causes the communication unit 105 to transmit at least a part of the long-time sampling data stored in the long-time sampling storage unit 114 to the monitoring server 1. In the present embodiment, the long-time sampling storage unit 114 is made to transmit the newly sampled data from the previous transmission every predetermined time (for example, 24 hours) shorter than the memorable time. In addition, in a configuration in which the long-time sampling storage unit 114 is not provided, the long-time sampling transmission control unit 115 may transmit the sampled data each time the long-time sampling unit 113 samples data. Further, the transmission interval, the transmission condition, and the like can be switched by an instruction from an externally operable switch or the like provided in the communication unit 105 or the terminal device 100, similarly to the transmission control unit 111b.

Then, in the present embodiment, the statistical value sampling unit 102 has a determination unit 145 for determining whether or not there is an abnormality in the monitoring target based on the long-term sampling data acquired by the long-time sampling unit 113, and the determination unit 145 for the abnormality. An abnormality signal generation unit 146 that generates an abnormality signal indicating that there is an abnormality in the monitoring target when it is determined that there is an abnormality is provided. Then, when the abnormality signal is generated by the abnormality signal generation unit 146, the transmission control unit 111b determines that the transmission condition is satisfied and causes the communication unit 105 to transmit the abnormality signal to the monitoring server 1. Then, in the present embodiment, a threshold value is set for the long-time sampling data, and when the threshold value is exceeded or falls below the threshold value, the determination unit 145 determines that there is an abnormality in the monitoring target, and the determination unit 145 determines that there is an abnormality. When the determination is made, the abnormal signal generation unit 146 generates an abnormal signal, and the transmission control unit 111b causes the communication unit 105 to transmit the abnormal signal to the monitoring server 1. As a result, when there is an abnormality in the sampled data, the abnormality signal can be immediately transmitted to the monitoring server 1. When the abnormal signal generation unit 146 generates an abnormal signal, the transmission data storage unit 111a stores the short-time sampling data stored in the short-time sampling storage unit 110, and together with the abnormal signal or the abnormal signal. Instead, the short-time sampling data stored in the transmission data storage unit 111a may be transmitted to the monitoring server 1, the long-time sampling transmission control unit 115, and the tendency management sampling transmission control unit described later. 118, when the timing of data transmission by the index value calculation unit 103 overlaps, the transmission of an abnormal signal or short-time sampling data is prioritized.

In the present embodiment, the short-time sampling data is transmitted only at the time of failure, at the start or end of operation, or at the time of data abnormality, and it is highly necessary to transmit it to the monitoring server 1 side. The control unit 111b and the long-time sampling transmission control unit 115 give priority to the short-time sampling data and transmit the short-time sampling data to the communication unit 105 when the timing of transmitting the short-time sampling data and the timing of transmitting the long-time sampling data overlap. I am trying to let you.

The trend management sampling unit 116 was sampled during each trend management sampling cycle (for example, 1 hour cycle or 1 day cycle) longer than the long-time sampling cycle according to the setting of the statistical processing setting unit 107. Statistical processing is performed based on the processing data (in the present embodiment, the processing data after being processed by the data processing unit 106), and one or more statistical values obtained by the statistical processing are acquired as trend management sampling data. To do. Then, in the present embodiment, the tendency management sampling unit 116 acquires the tendency management sampling data only when the operation signal acquisition unit 119 is acquiring the operation signal. That is, when the sampling cycle is sufficiently long, it is sufficient to monitor only the data during operation, so that the acquisition of unnecessary data when the operation is stopped is avoided and the number of sampling data to be stored is reduced. Note that the trend management sampling unit 116 may perform statistical processing using short-time sampling data or long-time sampling data sampled during each tendency management sampling cycle, and may also perform processing data and short-time sampling data. Whether the statistical processing is performed using the sampling data or the long-time sampling data may be switched according to the setting of the statistical processing setting unit 107.

The tendency management sampling storage unit 117 stores the tendency management sampling data acquired by the tendency management sampling unit 116 in a time-series and cumulative manner. That is, the trend management sampling storage unit 117 stores the trend data periodically sampled by the trend management sampling unit 116. In the present embodiment, the trend management sampling storage unit 110 is used as a ring buffer capable of storing a predetermined number (for example, 240 points, 10 days or 24 days when converted into time) of trend management sampling data, and new data can be stored. Old data is deleted each time it is acquired, and only the most recently required data is stored.

The trend management sampling transmission control unit 118 periodically causes the communication unit 105 to transmit at least a part of the trend management sampling data stored in the trend management sampling storage unit 117 to the monitoring server 1. In the present embodiment, the tendency management sampling storage unit 110 transmits the newly sampled data from the previous transmission every predetermined time (for example, one day) shorter than the memorable time. As with the transmission control unit 111b, the transmission interval, transmission conditions, and the like can be switched by instructions from an externally operable switch or the like provided on the communication unit 105 or the terminal device 100.

Note that each sampling unit 109, 113, 116 performs statistical processing in a plurality of sampling cycles instead of one sampling cycle, and each sampling storage unit 110, 114, 117 separates the sampling data in each sampling cycle. For example, the trend management sampling unit 116 samples the trend management sampling data in a 1-hour cycle and a 1-day cycle, and the trend management sampling storage unit 117 has a 1-hour cycle and a 1-day cycle, respectively. The tendency management sampling data of the above may be stored separately.

As described above, the statistical value sampling unit 102 performs statistical processing according to the setting of the statistical processing setting unit 107 set according to the instruction to the statistical processing switching unit 108 by the data processing unit 106, and 1 or 1 according to the setting. After obtaining a plurality of statistical values and processing the data by the data processing unit 106, the data for processing is statistically collected in different sampling cycles by the short-time sampling unit 109, the long-time sampling unit 113, and the tendency management sampling unit 116. It is designed to be processed and sampled.

Then, in the case of statistical processing, when a fluctuation with a period shorter than the sampling cycle occurs, if the average value is acquired as statistical processing, the fluctuation may be overlooked. In that case, depending on the type of fluctuation. It is necessary to acquire the maximum value and the minimum value (see FIG. 7). Therefore, since the statistical value sampling unit 102 according to the present embodiment can set the number and types of statistical values obtained by each sampling unit separately by the statistical processing switching unit 108, it depends on the type of the monitoring target in which the terminal device 100 is installed. Appropriate statistics can be set. For example, the long-time sampling unit 113 and the trend management sampling unit 116 perform average value processing so that a large data flow can be observed, and the short-time sampling unit 116 can observe a short-time surge waveform generated at the time of failure or the like. For 109, the maximum value, or the statistical processing of the maximum value and the minimum value can be set.

The types of data statistical processing in the data processing unit 106, the short-time sampling unit 109, the long-time sampling unit 113, and the trend management sampling unit 116 are those of the sampling unit in the subsequent stage (destination of data after statistical processing). The same type of statistical processing is set, and the data sampled by the short-time sampling unit 109, long-time sampling unit 113, and trend management sampling unit 116 from the sampling unit of the previous stage (source of data for statistical processing) is the same. I am trying to get it from statistical processing. For example, when the short-time sampling unit 109 obtains the maximum and minimum values and the long-time sampling unit 113 obtains the average value by statistical processing based on the data of the data processing unit 106, the statistical processing of the data processing unit 106 is maximum. , Minimum and average are set, and the short-time sampling unit 109 performs statistical processing to obtain the maximum and minimum values from the maximum and minimum value data obtained by the statistical processing of the data processing unit 106, and the long-time sampling unit 113. Performs statistical processing to obtain an average value from the average value data obtained by the statistical processing of the data processing unit 106.

Further, the statistical value sampling unit 102 according to the present embodiment causes the monitoring server 1 side to transmit the data sampled by the short-time sampling unit 109 in a short cycle only when necessary, such as when an event such as a failure or operation occurs. At the same time, the data sampled by the long-time sampling unit 113 is periodically transmitted to the monitoring server 1 side to periodically monitor the monitoring target. In other words, normally, only the data acquired in the long sampling cycle is transmitted, and the detailed data sampled in the short cycle is transmitted only when necessary, so that the detailed data can be surely obtained when necessary, but as a whole. It is possible to reduce the amount of data transmission and reduce data communication charges. Further, the trend management sampling unit 116 having a longer sampling cycle obtains data having a longer cycle for monitoring a long-term tendency such as deterioration of the monitored object over time.

Next, the index value calculation unit 103 will be described. The index value calculation unit 103 is for calculating a determination index value for determining the state of the monitoring target or the like from the data from the data conversion unit 101. Therefore, as a functional unit, the determination index value is calculated from the processing data. The calculation processing units 120 and 126 for calculating the above, the tendency management sampling unit 129 for obtaining statistical values by statistically processing the judgment index values calculated by the short-time calculation processing unit 120 at a predetermined cycle, and each calculation processing. The storage units 121, 127, 130 and the storage units 121, 127, 130 store the determination index values obtained by the units 120 and 126 and the statistical values obtained by the tendency management sampling unit 129, respectively. Transmission control units 121, 128, 131 for transmitting the transmitted data to the communication unit 105, event signal acquisition unit 123 for acquiring various event signals from the event data processing unit 104, and arithmetic processing units 120, 126, respectively. The arithmetic processing setting unit 124 that sets the arithmetic processing to be performed in, the arithmetic processing switching unit 125 that can switch the setting of the arithmetic processing setting unit 124, and the operation signal acquisition unit 132 that acquires the operation signal from the event data processing unit 104. , The statistical processing setting unit 133 that sets the statistical processing to be performed by the trend management sampling unit 129, the statistical processing switching unit 134 that can switch the setting of the statistical processing setting unit 133, and the determination index calculated by the short-time calculation processing unit 120. It includes a determination unit 135 that makes a determination based on the value, and an abnormality signal generation unit 136 that generates an abnormality signal indicating that there is an abnormality in the monitoring target based on the determination result of the determination unit 135. Hereinafter, each functional unit will be described.

The short-time arithmetic processing unit (corresponding to the first arithmetic processing unit) 120 has a short-time sampling cycle (corresponding to the first sampling cycle, for example, 1 second to 10 seconds) longer than the processing sampling cycle (and the above-mentioned data processing cycle). ), The short-time determination index value (corresponding to the determination index value) is calculated based on the time-series processing data sampled during each short-time sampling cycle according to the setting of the arithmetic processing setting unit 124. Specifically, as shown in FIG. 3, the short-time calculation processing unit 120 includes a difference value group acquisition unit 120a, a dispersion value calculation unit 120b, an analysis value calculation unit 120c, and a calculation setting unit 120d. ing.

The difference value group acquisition unit 120a performs smoothing processing on the time-series processing data sampled during each short-time sampling cycle for each short-time sampling cycle, and smoothes the processing data and the corresponding smoothing. The difference value group obtained by obtaining the difference value from the value obtained by the processing for each processing data is acquired, and the variance value calculation unit 120b uses the difference value as the short-time determination index value for each short-time sampling cycle. The variance value in the difference value group acquired by the group acquisition unit 120a is calculated. For example, when the processing data (raw data in FIG. 4) as shown in FIG. 4 is obtained in a certain short-time sampling cycle, the difference value group acquisition unit 120a is subjected to, for example, a moving average (movement in FIG. 4) by the smoothing process. The average) is calculated, and the difference value (residual) is calculated for each processing data and the corresponding moving average value. As a result, a time change of the difference value (difference value group) as shown in FIG. 5 is obtained, and the dispersion value calculation unit 120b obtains the difference as shown in FIG. 6 from the time change of the difference value (difference value group). A histogram of the values can be created, and the dispersion value of the difference value group can be calculated.

The analysis value calculation unit 120c performs frequency analysis on the time-series processing data sampled during each short-time sampling cycle for each short-time sampling cycle, and calculates the analysis value as a short-time determination index value. For example, the analysis value includes frequency, frequency, and the like.

The calculation setting unit 120d sets, as the short-time determination index value, whether the dispersion value calculation unit 120b calculates the dispersion value group, the analysis value calculation unit 120c calculates the analysis value, or both are calculated. The first arithmetic processing unit 120 calculates one or both of the dispersion value and the analysis value as the short-time determination index value according to the setting of the arithmetic setting unit 120d. Specifically, the calculation setting unit 120d sets whether to calculate one or both of the variance value and the analysis value as the short-time determination index value according to the setting of the calculation processing setting unit 124.

The arithmetic processing setting unit 124 is for setting the arithmetic processing in the short-time arithmetic processing unit 120 and the long-time arithmetic processing unit 126, and as described above, which of the short-time determination index values is to be calculated is the difference value. For various arithmetic processing such as what to perform as smoothing processing in the group acquisition unit 120a, parameters for obtaining dispersion values and analysis values, and arithmetic processing cycles (short-time sampling cycle, long-time sampling cycle). Conditions can be set.

The arithmetic processing switching unit 125 can switch the setting of the arithmetic processing setting unit 124, and in the present embodiment, it is operated from the outside provided in the communication unit 105 or the terminal device 100 in the same manner as the statistical processing switching unit 108. The setting of the arithmetic processing setting unit 124 can be switched by an instruction from a possible switch or the like.

The short-time arithmetic processing storage unit (corresponding to the first storage unit) 121 stores the short-time determination index value acquired by the short-time arithmetic processing storage unit 121 in a time-series and cumulative manner. The short-time arithmetic processing storage unit 121, like the short-time sampling storage unit 110, is a ring buffer capable of storing a predetermined number of short-time determination index values (for example, 240 points, which is 4 to 40 minutes when converted to time). It is composed of.

The short-time arithmetic processing transmission control unit (corresponding to the first transmission control unit) 122 causes the communication unit 105 to transmit the short-time determination index value acquired by the short-time arithmetic processing storage unit 121, and is an event signal acquisition unit. Transmission data that acquires and stores the short-time determination index value in the range corresponding to the event signal among the short-time determination index values stored in the short-time arithmetic processing storage unit 121 when 123 acquires the event signal. When the storage unit 122a and the transmission condition (transmission data storage unit 122a newly stores data, the communication unit 105 receives a predetermined data request signal from the monitoring server 1 side, etc.) are satisfied. The communication unit 105 is provided with a transmission control unit 122b that causes the monitoring server 1 to transmit the short-time determination index value stored in the transmission data storage unit 122a. The short-time arithmetic processing transmission control unit 122 is basically configured in the same manner as the short-time sampling transmission control unit 111 except that the short-time determination index value acquired by the short-time arithmetic processing storage unit 121 is transmitted. Has been done.

Then, in the present embodiment, the index value calculation unit 103 includes a determination unit 135 that determines whether or not there is an abnormality in the monitoring target based on the short-time determination index value calculated by the short-time calculation processing unit 120, and the determination unit 135. An abnormality signal generation unit 136 that generates an abnormality signal indicating that there is an abnormality in the monitoring target when it is determined that there is an abnormality is provided. Then, when the abnormality signal is generated by the abnormality signal generation unit 136, the transmission control unit 122b causes the communication unit 105 to transmit the abnormality signal to the monitoring server 1. That is, depending on the type of abnormality to be monitored, the fluctuation of the processing data may be large, and the larger the fluctuation of the processing data, the larger the variance value. In such a case, if the variance value is calculated as the short-time determination index value, it is possible to detect an abnormality of the monitoring target that increases the fluctuation of the processing data. Further, if the analytical values such as the frequency and the frequency are calculated as the short-time determination index values, the abnormalities related to the analytical values such as changing the natural frequency of the sensor data 3 due to the occurrence of the abnormalities can be detected. Then, in the present embodiment, a threshold value is set for the variance value and the analysis value, and when the threshold value is exceeded or falls below the threshold value, the determination unit 135 determines that there is an abnormality in the monitoring target, and the determination unit 135 has an abnormality. When it is determined, the abnormal signal generation unit 136 generates an abnormal signal, and the transmission control unit 122b causes the communication unit 105 to transmit the abnormal signal to the monitoring server 1. When transmitting an abnormal signal, the short-time determination index value stored in the transmission data storage unit 122a may be transmitted to the monitoring server 1, and the timing of data transmission by the statistical value sampling unit 102 may be determined. When it overlaps with the transmission timing of the judgment index value in the short-time arithmetic processing transmission control unit 122, the long-time arithmetic processing transmission control unit 128, and the tendency management sampling transmission control unit 131, which will be described later, the transmission of the abnormal signal is prioritized. There is.

The long-time arithmetic processing unit (corresponding to the second arithmetic processing unit) 126 sets the arithmetic processing setting unit 124 for each long-time sampling cycle (corresponding to the second sampling cycle, for example, 1-minute cycle) longer than the short-time sampling cycle. According to the long-time judgment index value (second index) corresponding to the short-time judgment index value calculated by the short-time calculation processing unit 120 based on the time-series processing data sampled during each long-time sampling cycle. (Equivalent to a value) is calculated. The long-time arithmetic processing unit 126 has the same configuration as the short-time arithmetic processing unit 120 except that the sampling period is different. Further, the long-time determination index value obtained by the long-time calculation processing unit 126 may also be determined by the determination unit 135, and when an abnormality occurs, the abnormal signal generation unit 136 may generate an abnormal signal.

The long-time calculation processing storage unit (corresponding to the second storage unit) 127 stores the long-time determination index value calculated by the long-time calculation processing unit 126 in a time-series and cumulative manner, and performs long-time sampling. Similar to the storage unit 114, it is a ring buffer that can store a predetermined number of long-term judgment index values (for example, 240 points, which is 4 hours when converted to time), and old data is deleted every time new data is acquired. , Only the most recent required data is stored.

The long-time arithmetic processing transmission control unit (corresponding to the second transmission control unit) 128 periodically causes the communication unit 105 to transmit the long-term determination index value stored in the long-time arithmetic processing storage unit 127. It is configured in the same manner as the long-time sampling transmission control unit 115, except that the long-time determination index value stored in the long-time arithmetic processing storage unit 127 is stored.

The tendency management sampling unit (corresponding to the index value sampling unit) 129 is a statistical processing setting unit 133 for each tendency management sampling cycle (corresponding to the third sampling cycle, for example, a one-hour cycle or a one-day cycle) longer than the long-time sampling cycle. According to the setting of, statistical processing is performed based on the time-series short-time judgment index value acquired during each tendency management sampling cycle, and one or more statistical values obtained by the statistical processing are acquired as trend management sampling data. To do. Then, in the present embodiment, the tendency management sampling unit 129 acquires the tendency management sampling data only when the operation signal acquisition unit 132 acquires the operation signal. The tendency management sampling unit 129 may perform statistical processing using the long-time determination index value sampled during each tendency management sampling cycle, and may also perform the short-time determination index value and the long-time determination index value. It may be possible to switch which of the determination index values is used for statistical processing according to the setting of the statistical processing setting unit 133.

The trend management sampling storage unit (corresponding to the third storage unit) 130, the trend management sampling transmission control unit (corresponding to the third transmission control unit) 131, the statistical processing setting unit 133, and the statistical processing switching unit 134 are respectively. , The trend management sampling storage unit 117, the trend management sampling transmission control unit 118, the statistical processing setting unit 107, and the statistical processing switching unit 108 have the same configuration. That is, the tendency management sampling unit 129 performs statistical processing based on the statistical processing setting unit 133 set by the statistical processing switching unit 134, and the obtained statistical values are accumulated and stored in the tendency management sampling storage unit 130. The tendency management sampling transmission control unit 131 periodically causes the communication unit 105 to transmit at least a part of the statistical values stored in the tendency management sampling storage unit 130.

As described above, the index value calculation unit 103 can calculate the determination index value for determining the state of the monitoring target in different sampling cycles, and determine the state of the monitoring target. Then, the calculated judgment index value is accumulated and stored, and the long-term judgment index value and the tendency management sampling data are periodically transmitted to the monitoring server 1 side, and the judgment index value sampled in a short cycle is only when necessary. By transmitting data, the amount of data transmission can be suppressed and data communication charges can be suppressed. The configuration adopted by the statistical value sampling unit 102 and the configuration that can be adopted can be similarly adopted by the index value calculation unit 103.

Next, the event data processing unit 104 that processes the event data 4 will be described. The event data processing unit 104 generates an event signal indicating an event that has occurred in the monitored target based on the event data 4, controls the operation of the statistical value sampling unit 102 and the index value calculation unit 103, and generates the generated event signal. It is transmitted to the monitoring server 1 side, and includes an event data acquisition unit 137, an event signal generation unit 138, a data storage range setting unit 139, and a data storage control unit 140 as functional units.

The event data acquisition unit 137 acquires various event data 4 indicating that a predetermined event has occurred in the monitoring target. Examples of the event data 4 include failure data indicating that the monitored object has failed and operation data indicating that the monitoring target is in operation.

The event signal generation unit 138 generates an event signal according to the event data 4 acquired by the event data acquisition unit 137. For example, when the device is to be monitored, when the event data acquisition unit 137 acquires the failure data, a failure signal indicating that the monitored device has failed is generated according to the type of failure, and the event data acquisition unit When the state in which 137 has acquired the operation data is switched to the state in which the operation data is not acquired, an operation stop signal indicating that the monitored device has stopped is generated, and the event data acquisition unit 137 acquires the operation data. When the state is switched from the non-operational state to the operation data acquisition state, an operation start signal indicating that the monitored device has started operation is generated, and when the event data acquisition unit 137 continuously acquires the operation data. It is designed to generate an operation signal indicating that the monitored device is in operation (when monitoring the temperature at the installation point, it indicates changes in weather such as rain or the occurrence of natural disasters such as earthquakes. Generating an event signal). Then, the generated event signal is sent to the data storage control unit 140, and of the event signals, only the operation signal is sent to the operation signal acquisition units 119 and 132 by the determination unit 141. Further, in the event signal generation unit 138, the event data acquisition unit 137 continues the event data for a predetermined time so that the event signal is not generated when the erroneous event data 4 is instantaneously generated due to the malfunction of the monitoring target. The event signal is generated when the data is acquired.

The data storage range setting unit 139 sets the range of the short-time sampling data and the short-time determination index value to be stored by the transmission data storage units 111a and 122a for each type of event signal generated by the event signal generation unit 138. The data storage range information is stored, and the data storage control unit 140 stores the data storage range information in the transmission data storage units 111a and 122a according to the type of the event signal based on the data storage range information. , 122a is designed to store the range of short-time sampling data and short-time judgment index value to be stored. Specifically, the data storage range setting unit 139 sets a time for delaying transmission to the data storage control unit 140 for each type of event signal, and the data storage control unit 140 sets the event signal generation unit 138. Receives the event signal generated in, holds the event signal for a time corresponding to the type of the event signal based on the setting of the data storage range setting unit 139, and then transmits the received event signal to the data storage units 111a, 122a for transmission. It is to be sent to. That is, the data storage control unit 140 delays the transmission of the event signal to the transmission data storage units 111a and 122a by a time corresponding to the type of the event signal. Then, the event signal transmitted to the transmission data storage units 111a, 122a is transmitted by the discrimination unit 142 to one or both of the transmission data storage units 111a, 122a. The setting of the data storage range setting unit 139 can be switched by an instruction from an externally operable switch or the like provided in the communication unit 105 or the terminal device 100.

For example, the data at the start of operation is required for the range of a predetermined period from the start of operation to the transition to steady operation, and the data at the end of operation is required for complete operation after the end of operation. The data is in the range of a predetermined period until the data is stopped, but when the operation start signal or the operation stop signal is generated, the transmission data storage units 111a and 122a are immediately connected to the short-time sampling storage unit 110 and the short-time arithmetic processing storage unit. When the data stored in 121 is stored, only the data in the range before the start of operation and before the end of operation can be acquired, and the data in the required range cannot be stored. Therefore, the data storage range setting unit 139 sets a time for delaying transmission in the data storage control unit 140 for each type of event signal, and the data storage control unit 140 sets the time for the event signal according to the type of the event signal. By delaying the transmission to the transmission data storage units 111a and 122a, the timing at which the event signal acquisition units 112 and 123 acquire the operation start signal, the operation stop signal, etc. Data in a necessary range is stored in the transmission data storage units 111a and 122a as a timing at which the operation is completely stopped after the operation is completed. The data storage control unit 140 excludes the operation signal from the signals transmitted to the transmission data storage units 111a and 122a.

Further, the data storage control unit 140 monitors the event signal in the communication unit 105 at the same timing as the transmission to the transmission data storage units 111a and 122a, or when the event signal is received from the event signal generation unit 138. It is designed to be sent to the server 1 side.

In this way, the event data processing unit 104 generates an event signal according to the event data 4 and causes the monitoring server 1 to transmit the event signal. Then, the data storage control unit 140 sets the timing for causing the transmission data storage units 111a and 122a to store the data appropriately.

As described above, the terminal device 100 according to the present embodiment samples the sensor data 3 from the monitoring target by the statistical value sampling unit 102, transmits the sensor data 3 to the monitoring server 1, and determines from the sensor data 3 by the index value calculation unit 103. The index value is obtained to determine the state of the monitoring target, the event data processing unit 104 processes the event data 4, and the event that occurs in the monitoring target is also transmitted to the monitoring server 1 and the statistical value sampling unit 102 and the index value calculation unit. It is designed to control 103.

Finally, the advantages of the terminal device 100 according to the present embodiment will be described. First, depending on the type of monitoring target, fluctuations with a period shorter than the sampling cycle may occur, and if the average value is acquired as statistical processing, the fluctuations may be overlooked. And what kind of fluctuation can occur in the data is determined to some extent depending on the type of device. In that case, it is necessary to acquire the maximum value and the minimum value according to the type of fluctuation. On the other hand, in the present embodiment, the number and types of statistical values obtained by the sampling units 109, 113, 116, and 129 can be set separately by the statistical processing switching units 107 and 133, so that the monitoring target in which the terminal device 100 is installed can be set. Appropriate statistical values can be set according to the type of. As a result, the number of sampling data to be stored can be effectively reduced while acquiring the necessary data.

Then, the terminal device 100 according to the present embodiment not only transmits the sampling data to the monitoring server 1, but also obtains the determination index value from the sampling data by the index value calculation unit 103 and can determine the state of the monitoring target. , It is now possible to accurately detect abnormalities that have occurred in the monitored object. Further, if the above-mentioned calculation of the determination index value performed by the terminal device 100 is performed on the monitoring server 1 side, a huge amount of data will be transmitted to the monitoring server 1 side, but the calculation of the determination index value will be performed on the terminal device. By performing at 100, the amount of data transmission can be suppressed and the data communication charge can be suppressed.

The terminal device 100 according to the present embodiment transmits data obtained in a short cycle by the short-time sampling unit 109 and the short-time arithmetic processing unit 120 to the monitoring server 1 side only when necessary, such as when an event such as a failure or operation occurs. The data obtained by the long-time sampling unit 113 and the long-time arithmetic processing unit 126 is periodically transmitted to the monitoring server 1 side to periodically monitor the monitoring target. In other words, normally, only the data acquired in the long sampling cycle is transmitted, and the detailed data sampled in the short cycle is transmitted only when necessary, so that the detailed data can be surely obtained when necessary, but as a whole. It is possible to reduce the amount of data transmission and reduce data communication charges.

[Other Embodiments]
Finally, other embodiments of the terminal device according to the present invention will be described. The configurations disclosed in each of the following embodiments can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction.

(1) It is not necessary to adopt all the configurations shown in FIG. 2, and only a part of the configurations shown in FIG. 2 may be adopted as long as the gist of the present invention is not deviated. For example, without adopting the tendency management sampling units 116 and 129 and the configurations related thereto, only the data by the short-time sampling cycle and the long-time sampling cycle may be obtained, or the statistical value sampling unit 102 or the like. It is not necessary to provide the event data processing unit 104, and the data processing unit 106 does not perform statistical processing, and the processing data of the data conversion unit 101 is sent to the sampling units 109, 113, 116. It is possible.

(2) In the above embodiment, the long-time arithmetic processing transmission control unit 128 periodically transmits the long-time determination index value stored in the long-time arithmetic processing storage unit 127 to the communication unit 105 as an example. As described above, the embodiment of the present invention is not limited to this, and the monitoring server 1 issues a transmission request signal of the long-time determination index value, and the terminal device 100 stores the long-time arithmetic processing in response to the transmission request signal. At least a part of the long-time determination index value stored in the unit 127 may be transmitted to the monitoring server 1.

(3) In the above embodiment, the configuration in which the trend management sampling transmission control unit 131 periodically transmits the index value statistical value stored in the trend management sampling storage unit 130 to the communication unit 105 has been described as an example. The embodiment of the present invention is not limited to this, the monitoring server 1 issues a transmission request signal of the index value statistical value, and the terminal device 100 is stored in the tendency management sampling storage unit 130 in response to the transmission request signal. At least a part of the index value statistical value may be transmitted to the monitoring server 1.

(4) In the above embodiment, the data storage control unit 140 has been described as an example of a configuration in which the transmission of the event signal to the data storage units 111a and 122a for transmission is delayed by a time corresponding to the type of the event signal. However, the embodiment of the present invention is not limited to this, and the data storage control unit 140 stores the transmission data in the transmission data storage units 111a and 122a according to the type of the event signal based on the data storage range information. There is no particular limitation as long as the short-time sampling data to be stored and the range of the short-time determination index value are stored in the units 111a and 122a.

(5) The number of sensors connected to the terminal device 100 may be one or a plurality. When a plurality of sensors are connected, the type of statistical processing, the sampling cycle, and the like may be set for each sensor.

(6) The system in which the terminal device 100 is used is not limited to the one shown in FIG. 1, and can be appropriately changed, such as providing a relay station for transferring data between the terminal device 100 and the monitoring server 1. ..

(7) The storage units 110, 114, 117, 121, 127, 130 are not limited to the ring buffer, and various types can be used.

(8) With respect to other configurations, it should be understood that the embodiments disclosed herein are exemplary in all respects and the scope of the invention is not limited thereto. Those skilled in the art will be able to easily understand that modifications can be made as appropriate without departing from the spirit of the present invention. Therefore, another embodiment modified without departing from the spirit of the present invention is naturally included in the scope of the present invention.

The present invention can be used in a terminal device that samples data from a sensor attached to a monitoring target.

100 Terminal equipment 101 Data conversion unit (processing data sampling unit)
105 Communication unit 120 Short-time arithmetic processing unit (first arithmetic processing unit)
121 Short-time arithmetic processing storage unit (first storage unit)
122 Short-time arithmetic processing transmission control unit (first transmission control unit)
122a Transmission data storage unit 123 Event signal acquisition unit 126 Long-time calculation processing unit (second calculation processing unit)
127 Long-time arithmetic processing storage unit (second storage unit)
128 Long-time arithmetic processing transmission control unit (second transmission control unit)
129 Trend management sampling unit (index value sampling unit)
130 Trend management sampling storage unit (third storage unit)
131 Tendency management sampling transmission control unit (third transmission control unit)
132 Operation signal acquisition unit 133 Statistical processing setting unit 134 Statistical processing switching unit 137 Event data acquisition unit 138 Event signal generation unit 139 Data storage control unit 140 Data storage range setting unit

Claims (11)

A terminal device that samples data from a sensor attached to a monitoring target.
A communication unit that can communicate with the monitoring device,
A processing data sampling unit that samples data from the sensor as processing data at a predetermined processing sampling cycle, and
A first arithmetic processing unit that calculates a determination index value based on the time-series processing data sampled during each first sampling cycle for each first sampling cycle longer than the processing sampling cycle.
A determination unit that determines whether or not there is an abnormality in the monitoring target based on the determination index value calculated by the first arithmetic processing unit.
An abnormal signal generation unit that generates an abnormal signal when the determination unit determines that there is an abnormality,
When the abnormal signal is generated by the abnormal signal generation unit, a first transmission control unit that causes the communication unit to transmit the abnormal signal to the monitoring device.
A first storage unit that accumulates the determination index value calculated by the first calculation processing unit, and a first storage unit.
An event signal acquisition unit that acquires an event signal indicating that a predetermined event has occurred in the monitoring target, and an event signal acquisition unit.
When the event signal acquisition unit acquires the event signal, it is calculated based on the processing data sampled in the period corresponding to the event signal among the determination index values stored in the first storage unit. A transmission data storage unit that acquires and stores the above-mentioned judgment index value,
Data storage that stores data storage range information that sets the range of the period during which the processing data, which is the basis of the determination index value to be stored by the transmission data storage unit, is set for each type of event signal. Range setting part and
Based on the data storage range information, the transmission data storage unit is based on the determination index value to be stored by the transmission data storage unit according to the type of the event signal acquired by the event signal acquisition unit. It is provided with a data storage control unit that stores the range of the period in which the processing data has been sampled.
The first arithmetic processing unit is
For each of the first sampling cycles, a smoothing process is performed on the time-series processing data sampled during each first sampling cycle, and the value obtained by the processing data and the corresponding smoothing process. The difference value group acquisition unit that acquires the difference value group obtained for each processing data, and the difference value group acquisition unit.
As the determination index value, a variance value calculation unit for calculating the variance value in the difference value group acquired by the difference value group acquisition unit is provided for each first sampling cycle .
The first transmission control unit causes the communication unit to transmit at least a part of the determination index value stored in the first storage unit to the monitoring device only when a predetermined transmission condition is satisfied. A terminal device that causes the communication unit to transmit the determination index value stored in the transmission data storage unit to the monitoring device when the transmission condition is satisfied. The first arithmetic processing unit is
An analysis value calculation unit that performs frequency analysis on the time-series processing data sampled during each first sampling cycle and calculates an analysis value as the determination index value for each first sampling cycle.
As the determination index value, a calculation setting unit that sets whether the dispersion value calculation unit calculates the dispersion value, the analysis value calculation unit calculates the analysis value, or both are calculated. Prepare,
The terminal device according to claim 1, wherein the first arithmetic processing unit calculates one or both of the dispersion value and the analysis value as the determination index value according to the setting of the arithmetic setting unit. It is a terminal device that samples from a sensor attached to the monitoring target.
A communication unit that can communicate with the monitoring device,
A processing data sampling unit that samples data from the sensor as processing data at a predetermined processing sampling cycle, and
A first arithmetic processing unit that calculates a determination index value based on the time-series processing data sampled during each first sampling cycle for each first sampling cycle longer than the processing sampling cycle.
A determination unit that determines whether or not there is an abnormality in the monitoring target based on the determination index value calculated by the first arithmetic processing unit.
An abnormal signal generation unit that generates an abnormal signal when the determination unit determines that there is an abnormality,
When the abnormal signal is generated by the abnormal signal generation unit, a first transmission control unit that causes the communication unit to transmit the abnormal signal to the monitoring device.
A first storage unit that accumulates the determination index value calculated by the first calculation processing unit, and a first storage unit.
An event signal acquisition unit that acquires an event signal indicating that a predetermined event has occurred in the monitoring target, and an event signal acquisition unit.
When the event signal acquisition unit acquires the event signal, it is calculated based on the processing data sampled in the period corresponding to the event signal among the determination index values stored in the first storage unit. A transmission data storage unit that acquires and stores the above-mentioned judgment index value,
Data storage that stores data storage range information that sets the range of the period during which the processing data, which is the basis of the determination index value to be stored by the transmission data storage unit, is set for each type of event signal. Range setting part and
Based on the data storage range information, the transmission data storage unit is based on the determination index value to be stored by the transmission data storage unit according to the type of the event signal acquired by the event signal acquisition unit. It is provided with a data storage control unit that stores the range of the period in which the processing data has been sampled.
The first arithmetic processing unit, for each of the first sampling period, performs frequency analysis on-series the processing data when sampled during each first sampling period, calculating the analysis value as the determination index value And
The first transmission control unit causes the communication unit to transmit at least a part of the determination index value stored in the first storage unit to the monitoring device only when a predetermined transmission condition is satisfied. A terminal device that causes the communication unit to transmit the determination index value stored in the transmission data storage unit to the monitoring device when the transmission condition is satisfied. An event data acquisition unit that acquires event data indicating that a predetermined event has occurred in the monitoring target, and an event data acquisition unit.
The terminal device according to any one of claims 1 to 3, further comprising an event signal generation unit that generates the event signal when the event data acquisition unit continuously acquires the event data for a predetermined time. The terminal device according to any one of claims 1 to 4 , wherein the first transmission control unit determines that the transmission condition is satisfied when the transmission data storage unit newly stores the determination index value. .. The terminal device according to any one of claims 1 to 5 , wherein the first transmission control unit determines that the transmission condition is satisfied when the communication unit receives a predetermined data request signal. For each second sampling cycle longer than the first sampling cycle, a second index value corresponding to the determination index value is calculated based on the time-series processing data sampled during each second sampling cycle. The second arithmetic processing unit and
A second storage unit that cumulatively stores the second index value acquired by the second arithmetic processing unit, and a second storage unit.
Periodically, before Symbol communication unit, according to claim 1 to 6; and a second transmission control unit for transmitting to the monitoring device at least part of the stored in the second storage unit the second index value The terminal device according to any one item. The determination index value is acquired, and statistical processing is performed based on the time-series determination index value acquired during each third sampling cycle for each third sampling cycle longer than the first sampling cycle, and statistical processing is performed. The index value sampling unit that acquires the index value statistical value obtained by
A third storage unit that cumulatively stores the index value statistical value acquired by the index value sampling unit, and a third storage unit.
Periodically, before Symbol communication unit, one of the claims 1-7; and a third transmission control unit for transmitting to the monitoring device at least part of the index value statistical value stored in the third storage unit The terminal device according to one item. In the statistical processing in the index value sampling unit, a statistical processing setting unit capable of setting one or more types of statistical values to be acquired as the index value statistical value, and a statistical processing setting unit.
A statistical processing switching unit capable of switching the setting of the statistical processing setting unit is provided.
The terminal device according to claim 8 , wherein the index value sampling unit acquires the index value statistical value according to the setting of the statistical processing setting unit. The terminal device according to claim 9 , wherein the statistical processing setting unit can set at least one or two or more of at least a maximum value, a minimum value, and an average value as statistical values to be acquired. A driving signal acquisition unit for acquiring a driving signal indicating that the monitored object is driving is provided.
The index value sampling unit acquires the determination index value only when the operation signal acquisition unit acquires the operation signal, and any one of claims 8 to 10 for acquiring the index value statistical value. The terminal device according to the section.

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