JP5907926B2 - Monitoring device and program - Google Patents

Description

  The present invention relates to monitoring devices and programs, and more particularly to monitoring related to the use of one or more devices using utilities.

  In order to measure the usage amount of utilities such as electricity and water, for example, the usage amount of electric power, a measuring instrument called a meter-reading meter that outputs a pulse signal for each set usage amount of electric power is used. In a building monitoring system where electrical equipment such as air conditioning is installed, pulse signals transmitted from the meter-reading meter are counted, and the amount of power used is automatically calculated according to the number of counts. More specifically, the meter reading meter is provided with an operation unit for setting a pulse constant for how much electric energy is used to transmit a pulse signal, and the monitoring system is transmitted within a predetermined period. The amount of power used in the predetermined period is automatically calculated, for example, by multiplying the counted number of the pulse signal by the pulse constant set in the meter-reading meter. The calculated power consumption is used for calculating a billing amount for each tenant.

  By the way, a technique for analyzing the characteristics of a pulse train by creating a histogram based on the received pulse signal and analyzing the pattern of the histogram has been proposed (for example, Patent Document 1).

JP-A-6-160532 JP-A-8-202980 JP 2006-162579 A

  An object of the present invention is to estimate the usage status of a device that uses a utility by creating and analyzing a histogram based on a pulse signal transmitted from a measuring instrument for each set utility usage amount.

  Another object of the present invention is to detect an abnormality related to utility use by creating and analyzing a histogram based on a pulse signal transmitted for each predetermined amount of utility usage from a measuring instrument. .

  The monitoring device according to the present invention includes a receiving means for receiving pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument according to a utility usage amount by one or a plurality of devices, and within a predetermined period Based on the received pulse information, the usage record information for indicating the usage record of the utility is generated by a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period. Generating means, and estimating means for estimating the usage status of the one or more devices by analyzing the peak position of the reception time interval of the pulse signal and the frequency at each peak position when the usage record information is expressed in a histogram It is characterized by having.

  The monitoring device according to the present invention includes a receiving unit that receives pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument at a time interval according to a usage amount of a utility by one or a plurality of devices. Based on the pulse information received within the predetermined period, the use record for showing the utility use record in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period Generating means for generating information, storage means for storing the use record information generated by the generating means, use record information recently generated by the generating means, and use record information stored in the storage means By comparing the peak position of the reception time interval of the pulse signal when each is represented by a histogram, And having a determining means for determining whether the associated abnormal use of Iriti, the.

  A program according to the present invention is a program for receiving a pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument according to a usage amount of a utility by one or a plurality of devices. Based on the received pulse information, the usage record information is generated to indicate the usage record of the utility in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period. Generating means for estimating the usage status of the one or more devices by analyzing the peak position of the reception time interval of the pulse signal and the frequency at each peak position when the usage record information is represented by a histogram, It is intended to function as.

  The program according to the present invention accepts a computer to receive pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument at a time interval corresponding to a usage amount of a utility by one or a plurality of devices. Means, based on pulse information received within a predetermined period, use to indicate utility usage results in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period The generating means for generating the record information, the use record information recently generated by the generating means, and the use record information stored in the storing means for storing the use record information generated by the generating means are respectively represented by histograms. By comparing the peak position of the reception time interval of the pulse signal when expressed, Determination means for determining presence or absence of an abnormality associated with the use of utilities, it is intended to function as a.

  According to the present invention, it is possible to estimate the usage status of a device that uses a utility by creating and analyzing a histogram based on a pulse signal transmitted from the measuring instrument for each set utility usage amount.

  Further, by creating and analyzing a histogram based on a pulse signal transmitted for each predetermined amount of utility usage from the measuring instrument, it is possible to detect an abnormality related to utility usage.

It is a block block diagram which shows one Embodiment of the monitoring apparatus which concerns on this invention. It is a hardware block diagram of the computer which forms the monitoring apparatus in this Embodiment. It is a flowchart which shows the process which the monitoring apparatus in this Embodiment implements. It is a figure which shows an example of the histogram produced in this Embodiment. (A) is a figure corresponding to FIG. 4, (b) is a figure which shows an example of the histogram produced after the histogram shown to (a) was produced. (A) is a figure corresponding to FIG. 4, (b) is a figure which shows the other example of the histogram produced after the histogram shown to (a) was produced. (A) is a figure corresponding to FIG. 4, (b) is a figure which shows the other example of the histogram produced after the histogram shown to (a) was produced. (A) is a figure corresponding to FIG. 4, (b) is a figure which shows the other example of the histogram produced after the histogram shown to (a) was produced. It is a conceptual diagram when the histogram created in this Embodiment was put in time series.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In this embodiment, a monitoring device that monitors power consumption in an electric device that is a form of utility equipment will be described as an example.

  FIG. 1 is a block configuration diagram showing an embodiment of a monitoring apparatus according to the present invention. FIG. 1 shows a device 1, a power line 2, a meter 3, a controller 4, a building monitoring system 5, and a monitoring device 10 in the present embodiment.

  A plurality of facility devices (hereinafter simply referred to as “devices”) 1 such as air conditioners and lighting to be monitored by the building monitoring system 5 are connected to the power line 2. Each device 1 is operated with power supplied through the power line 2. In FIG. 1, a plurality of devices 1 are connected, but one device may be used.

  A power meter 2 is connected to a meter-reading meter (hereinafter simply referred to as “meter”) 3, and is a measuring instrument that measures the total amount of power used by all devices 1 that receive power from the connected power line 2. . The meter 3 is provided with an operation unit for setting a pulse constant, and transmits a pulse signal for each used electric energy corresponding to the set pulse constant, for example, every 1 Kw or every 10 Kw. That is, the meter 3 transmits more pulse signals as the power consumption is larger.

  The controller 4 is a controller that is connected to each device 1 by a contact signal and monitors and controls each device 1. When the controller 4 receives the pulse signal transmitted from the connected meter 3, the controller 4 transmits to the building monitoring system 5 pulse information including at least the date and time when the pulse signal is received in real time or periodically.

  The building monitoring system 5 is configured by one or a plurality of server computers, and is a system that monitors the operation status, abnormality occurrence, and the like of the device 1 installed in the building, and collects pulse information transmitted from the controller 4. Although only one controller 4 is illustrated in FIG. 1, a plurality of controllers 4 may be connected to the building monitoring system 5.

  The monitoring device 10 is realized by a computer such as a general-purpose personal computer (PC) and analyzes the pulse information collected by the building monitoring system 5 to estimate the operation status of the device 1 connected to the power line 2. Detect anomalies related to power usage.

  FIG. 2 is a hardware configuration diagram of a computer forming the monitoring device 10 according to the present embodiment. In this embodiment, the computer forming the monitoring device 10 can be realized by a general-purpose hardware configuration that has existed in the past. That is, the computer is provided as a CPU 21, ROM 22, RAM 23, HDD controller 25 connected with a hard disk drive (HDD) 24, a mouse 26 and a keyboard 27 provided as input means, and a display device as shown in FIG. An input / output controller 29 for connecting each display 28 and a network controller 30 provided as a communication means are connected to an internal bus 31.

  Note that the hardware configuration of each computer included in the building monitoring system 5 can be illustrated in the same manner as in FIG.

  Returning to FIG. 1, the monitoring apparatus 10 includes a pulse information receiving unit 11, a usage record information generation unit 12, a display processing unit 13, an analysis processing unit 14, a control unit 15, and a usage record information storage unit 16. The pulse information receiving unit 11 is provided as an accepting unit, and accepts it by receiving pulse information sent from the building monitoring system 5. As described above, the pulse information includes at least the reception date and time or the reception time interval of the pulse signal transmitted from the meter 3 in accordance with the amount of power used by one or a plurality of devices 1 connected to the power line 2. . The usage record information generating unit 12 is provided as a generating unit, and based on pulse information received by the pulse information receiving unit 11 within a predetermined period, a reception time interval (pulse signal) of each pulse signal transmitted within the predetermined period. Usage history information for indicating the power usage history is generated by a histogram representing the frequency in the reception time interval with respect to the transmission interval) and registered in the usage history information storage unit 16. This usage record information to be generated is information necessary for creating a histogram as well as the power usage record. The display processing unit 13 creates a histogram from the usage record information generated by the usage record information generation unit 12 and displays the histogram on the display 28. In addition, when an abnormality related to the use of the device 1 is detected, the display processing unit 13 generates information indicating that fact and displays the information on the display 28.

  The analysis processing unit 14 analyzes the usage record information to estimate the usage status of the device 1 and determine whether there is an abnormality related to power usage. That is, the analysis processing unit 14 is provided as an estimation unit, and analyzes the peak position of the reception time interval of the pulse signal when the usage record information is represented by a histogram and the frequency at each peak position, thereby using the device 1. Is estimated. Furthermore, the analysis processing unit 14 is provided as a determination unit, and the usage record information recently generated by the use record information generation unit 12 and the use record information stored in the use record information storage unit 16 are represented by histograms. By comparing the peak position of the reception time interval of the pulse signal and the frequency at each peak position, the presence or absence of an abnormality related to the use of power is determined. The control unit 15 operates in cooperation with the above-described components 11 to 14 to cause the PC to function as the monitoring device 10. The usage record information storage unit 16 is provided as a storage unit, and stores the use record information generated by the use record information generation unit 12.

  Each component 11-15 in the monitoring apparatus 10 is implement | achieved by the cooperative operation | movement of the computer which forms the monitoring apparatus 10, and the program which operate | moves by CPU21 mounted in the computer. The usage record information storage unit 16 is realized by the HDD 24 mounted in the monitoring device 10. Alternatively, the RAM 23 or an external storage means may be used via a network.

  Further, the program used in this embodiment can be provided not only by communication means but also by storing it in a computer-readable recording medium such as a CD-ROM or DVD-ROM. The program provided from the communication means or the recording medium is installed in the computer, and various processes are realized by the CPU of the computer sequentially executing the program.

  Next, based on the pulse transmitted by the meter 3, the use state of each device 1 connected to the power line 2 is estimated, and the processing in the monitoring device 10 for detecting an abnormality is used with the flowchart shown in FIG. I will explain.

  As described above, when power is used by one or a plurality of devices 1 connected to the power line 2, the meter 3 transmits a pulse signal, for example, every 1 Kw according to the amount of power used. This every 1 Kw follows the pulse constant set in the meter 3. When the controller 4 receives the pulse signal transmitted from the connected meter 3, the controller 4 transmits pulse information including at least the date and time when the pulse signal is received to the building monitoring system 5. The building monitoring system 5 collects pulse information transmitted from the controller 4 and transmits it to the monitoring device 10.

  When the pulse information receiving unit 11 in the monitoring device 10 receives the pulse information sent from the building monitoring system 5 (step 110), the pulse information receiving unit 11 passes it to the usage record information generating unit 12.

  The usage record information generating unit 12 holds the pulse information transmitted from the pulse information receiving unit 11 in the RAM 23 or the HDD 24 until a predetermined period elapses. The predetermined period is a predetermined period such as an operation time of the device (for example, from 9 o'clock to 17 o'clock), one day, and one week.

  When detecting that the predetermined period has elapsed, the control unit 15 instructs the use record information generating unit 12 to generate use record information. In response to this instruction, the usage record information generation unit 12 generates the usage record information as follows (step 120). That is, the reception time interval (interval) with the pulse signal immediately before and immediately after being transmitted by the meter 3 within a predetermined period is obtained. Then, when the reception time intervals of all the pulse signals are obtained, the frequency is obtained by counting the frequency for each reception time interval. The usage record information generation unit 12 generates information necessary for creating a histogram in the predetermined period as usage record information by estimating the peak position in the histogram and calculating the frequency at each peak position in this way. It is written and registered in the usage record information storage unit 16. The reception of the pulse information and the generation and registration of the usage record information are repeatedly performed every time a predetermined period elapses.

  When the usage record information is generated because the predetermined period has elapsed, the display processing unit 13 creates a histogram from the generated usage record information so that it can be drawn and displays the histogram on the display 28 (step 130). An example of the created histogram is shown in FIG.

  In this histogram, the horizontal axis represents the reception time interval of the transmitted pulse signal, and the vertical axis represents the frequency in the reception time interval. For example, this histogram is obtained by performing maximum likelihood estimation by applying the reception time interval of pulse signals collected within a predetermined period to the mixed distribution model. The peak μ of the pulse reception interval and the variation σ at each peak in this histogram are estimated using, for example, an EM algorithm. The method for creating a histogram based on the transmitted pulse signal is not limited to this, and various conventional methods may be used.

  Subsequently, when the usage record information is generated by the usage record information generation unit 12, the analysis processing unit 14 analyzes the use record information and estimates the usage status of the device 1 as follows (step 140). ).

  For example, it is assumed that two devices 1 (“device A” and “device B”) are connected to the power line 2. It is assumed that there are the following three patterns as patterns in which these two devices A and B are operated / stopped. The first pattern is a pattern in which only device A is operating, the second pattern is a pattern in which only device B is operating, and the third pattern is a pattern in which both device A and device B are operating. Here, since the analysis is performed using the transmitted pulse signal, the usage pattern in which the pulse signal is not transmitted, that is, the pattern in which both the device A and the device B are stopped is excluded. In addition, for convenience of explanation, each device A and B will be described as operating at a certain processing capacity during operation.

  Analysis of the histogram shown in FIG. 4 reveals the following. The histogram has three peaks μ1, μ2, and μ3. As described above, the devices A and B operate with a constant processing capability, but due to slight fluctuations, variations σ1, σ2, and σ3 are generated. In the case of a histogram having three peaks as illustrated in FIG. 4, it can be estimated that two devices A and B are operated. Since the shorter the reception time interval of the pulse signal is, the larger the amount of power used is. In this example, only one device operates for the peaks μ1 and μ2, and both operate for the peak μ3 with the shortest reception time interval. It means that you are doing. If the peak μ1 is a peak when only the device A is operating, and the peak μ2 is a peak when only the other device, the device B is operating, the peak μ1 is received from the peak μ2. Since the interval is large, it can be seen that the device A is a device that operates with less power consumption than the device B.

  If the reception time interval value at peak μ1 is ΔT1 and the reception time interval value at peak μ2 is ΔT2, the reception time interval ΔT3 at peak μ3 can be calculated by the equation (ΔT1 × ΔT2) ÷ (ΔT1 + ΔT2). Further, the operation time of the device A within the predetermined time can be calculated from ΔT1 and frequency at the peak μ1 and ΔT3 and frequency at the peak μ3.

  As described above, the analysis processing unit 14 may be operated independently by the two devices A and B connected to the power line 2 or may be operated simultaneously. That is, it is estimated by analyzing a histogram generated based on the usage record information that the power consumption of the device B is larger than the device A.

  In addition, when the usage record information is generated by the usage record information generation unit 12, the analysis processing unit 14 compares the use record information with the past use record information stored in the use record information storage unit 16. Then, whether or not there is an abnormality related to the use of electric power is determined (step 150). This process will be described later, and here, the estimation of the usage status of the apparatus will be described. In FIG. 3, it is illustrated that abnormality determination is performed after estimation. However, these processes may be reversed or performed in parallel.

  FIG. 5A is the same diagram as FIG. 4, and FIG. 5B shows the pulse signals received within a predetermined period after the predetermined period when the histogram shown in FIG. 5A is obtained. A histogram generated based on this is shown. The analysis processing unit 14 compares the histograms when estimating the change in the usage status of the device 1, but basically it is preferable to compare the histograms with a histogram for a continuous predetermined period, that is, the immediately preceding predetermined period. is there. Referring to FIG. 5 (b), the number and position of each peak [mu] 1- [mu] 3 does not change with respect to FIG. 5 (a), but the frequency at the peaks [mu] 1, [mu] 2 decreases, while the devices A, B It can be seen that the frequency of the peak μ3 when operating together increases.

  That is, from the histogram changed from FIG. 5 (a) to FIG. 5 (b), the time that the devices A and B are operated independently is shortened, while the time that the devices A and B are operating is longer. You can see that In other words, the analysis processing unit 14 estimates the usage status of the devices A and B in the predetermined period from the histogram illustrated in FIG. 5B and compares it with the histogram of the predetermined period immediately before illustrated in FIG. Thus, as described above, it is estimated that the use time of the device alone is shortened and that the time during which both devices are operated is increased. Further, since there is no change in the peak position, it can be seen that the pulse constant set in the meter 3 is not changed.

  FIG. 6A is the same diagram as FIG. 4, and FIG. 6B shows pulse signals received within a predetermined period after the predetermined period when the histogram shown in FIG. 6A is obtained. A histogram generated based on this is shown. Referring to FIG. 6B, it can be seen that a peak μ0 newly appears with respect to FIG. 6A. Further, although there is no change in the positions at the peaks μ1 and μ2, it can be seen that the reception time interval indicated by the peak μ3 is shortened to the peak μ3 ′ and the frequency at the peak μ3 ′ is increased. The analysis processing unit 14 performs the following estimation from this histogram.

  That is, the analysis processing unit 14 first estimates that the device (hereinafter, “device C”) has started a new operation because the peak μ0 has been newly filed. Since the peak μ0 has a larger reception time interval than the peak μ1, it is estimated that the device C is a device that operates with less power consumption than the device A. In addition, when the devices A and B were operating together, the reception time interval of the peak μ3 was shortened to μ3 ′. The power consumption increased due to the simultaneous operation of the device C in addition to the devices A and B. It is estimated that When the reception time interval value at peak μ1 is ΔT0, the reception time interval value at peak μ1 is ΔT1, and the reception time interval value at peak μ2 is ΔT2, the reception time interval ΔT3 ′ at peak μ3 ′ is (ΔT0 × ΔT1 × ΔT2) ÷ (ΔT1 × ΔT2 + ΔT2 × ΔT0 + ΔT0 × ΔT1).

  By the way, as a pattern in which the three devices A, B, and C are operated / stopped, there are three patterns in which only one device is operated, two patterns in which two devices are operated, and three devices. There is one pattern that operates all, and one pattern that stops all three devices. Of these, when two devices are operating, for example, when device A and device B are operating, a peak should appear at the position of (ΔT1 × ΔT2) ÷ (ΔT1 + ΔT2) on the histogram. In FIG. 6B, the peak does not appear. Similarly, the peaks that should appear on the histogram when the devices B and C and the devices C and A are operating do not appear. On the other hand, when all three devices A, B, and C are operating, a peak should appear at the position (ΔT3 ′) on the histogram. In FIG. 6B, the peak μ3 ′ appears. ing. Therefore, from the histogram, the analysis processing unit 14 is operated by the new device C, the three devices A, B, and C each operating alone, and all the three devices operating by the peak μ0. On the other hand, if two of the three units are not operating, the usage status of the device 1 connected to the power line 2 is estimated.

  FIG. 7A is the same diagram as FIG. 4, and FIG. 7B shows pulse signals received within a predetermined period after the predetermined period from which the histogram shown in FIG. 7A was obtained. A histogram generated based on this is shown. Referring to FIG. 7 (b), it can be seen that the position of any peak is shifted to the shorter reception time interval with respect to FIG. 7 (a). It can also be seen that the frequency of each peak μ1 ′, μ2 ′, μ3 ′ is also increased. The analysis processing unit 14 performs the following estimation from this histogram.

  That is, the analysis processing unit 14 analyzes the histogram shown in FIG. 7B, and in the same period as in FIG. 7A, the two devices A and B are operating within the predetermined period. The peaks μ1 ′ and μ2 ′ are estimated to be operated by only one device A and B, respectively, and the peak μ3 ′ is estimated that both are operated. Here, it is assumed that each peak value is shortened at the same ratio as compared with the histogram shown in FIG. 7A created immediately before. As described above, when the positions of the peaks μ1 ′ to μ3 ′ are changed at the same ratio from the positions of the corresponding peaks μ1 to μ3 (reception time interval values ΔT1 to ΔT3), the analysis processing unit 14 is set in the meter 3. It is presumed that the pulse constant to be changed is changed or the meter 3 is abnormal. The change of the pulse constant for the meter 3 may occur due to the replacement of the meter 3, an erroneous operation during maintenance of the meter 3, or the like. In such a case, the analysis processing unit 14 determines that there is an abnormality when using power. In this embodiment, not only abnormalities such as failure of the device itself that uses electric power but also other devices such as the meter 3 and setting errors of the pulse constant are correctly measured in this embodiment. All situations that cannot be detected are detected as abnormalities related to the use of power.

  FIG. 8A is the same diagram as FIG. 4, and FIG. 8B shows pulse signals received within a predetermined period after the predetermined period from which the histogram shown in FIG. 8A was obtained. A histogram generated based on this is shown. Referring to FIG. 8 (b), it can be seen that the position of any peak is shifted to the shorter reception time interval with respect to FIG. 8 (a). Basically, it is the same as described with reference to FIG. However, in the example shown in FIG. 8, there is a pulse signal reception time interval that is impossible in terms of setting. In FIG. 8B, this corresponds to the range D in which the reception time interval is at a very short position. In FIG. 8B, a part 8 of the histogram is included in the range D. However, if there is a part included in the range D, the analysis processing unit 14 determines that there is an abnormality such as occurrence of an overcurrent, for example. To do. That is, it is determined that the abnormality is related to the use of power. By performing such an analysis, an overcurrent can be detected without using a current transformer (CT).

  FIG. 9 is a conceptual diagram when the histograms shown in FIGS. 4 to 8 are arranged in time series. In FIG. 9, the histogram is shown three-dimensionally by adding an axis of time in addition to two axes of the reception time interval and frequency of the pulse signal. 4 to 8, assuming that one day is set as the predetermined period, the usage status of the device may change depending on the time zone and time of day, such as at the start of operation and at the line time. . Therefore, as shown in FIG. 9, when the period of one day is subdivided (every hour in the example shown in FIG. 9) and compared with past use record information, use record information corresponding to the same time is used. Histograms created from the above may be compared with each other. For example, the histogram created based on the pulse signal received from 12:00 to 13:00 today is compared with the histogram created based on the pulse signal received from 12:00 to 13:00 yesterday, last week, one month ago or one year ago. . Thereby, while being able to estimate the usage condition of the apparatus 1 in detail, it becomes easy to detect abnormality.

  As described above, the analysis result in the analysis processing unit 14, that is, information on the estimated usage status of the device 1 and the detected abnormality is displayed on the display processing unit 13. Further, it may be recorded in a storage means or notified to an administrator or the like via a network.

  In the present embodiment, power has been described as an example of a utility, but the present invention can also be applied to monitoring of water, gas, and the like for measuring usage with a measuring instrument.

  1 device, 2 power line, 3 meter, 4 controller, 5 building monitoring system, 10 monitoring device, 11 pulse information receiving unit, 12 usage record information generating unit, 13 display processing unit, 14 analysis processing unit, 15 control unit, 16 use Record information storage unit, 21 CPU, 22 ROM, 23 RAM, 24 hard disk drive (HDD), 25 HDD controller, 26 mouse, 27 keyboard, 28 display, 29 I / O controller, 30 network controller, 31 internal bus.

Claims (4)

Receiving means for receiving pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument in accordance with a usage amount of a utility by one or a plurality of devices;
Based on the pulse information received within the predetermined period, the usage record information for indicating the utility use record in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period. Generating means for generating
Estimating means for estimating the usage status of the one or more devices by analyzing the peak position of the reception time interval of the pulse signal and the frequency at each peak position when the usage record information is represented by a histogram;
The monitoring apparatus characterized by having. Receiving means for receiving pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument at a time interval corresponding to a usage amount of a utility by one or a plurality of devices;
Based on the pulse information received within the predetermined period, the usage record information for indicating the utility use record in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period. Generating means for generating
Accumulating means for accumulating usage record information generated by the generating means;
Use of utility by comparing the peak position of the reception time interval of the pulse signal when the usage record information recently generated by the generation unit and the usage record information stored in the storage unit are respectively represented by histograms Determining means for determining the presence or absence of a related abnormality;
The monitoring apparatus characterized by having. Computer
Receiving means for receiving pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument in accordance with a usage amount of a utility by one or a plurality of devices;
Based on the pulse information received within the predetermined period, the usage record information for indicating the utility use record in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period. Generating means for generating
Estimating means for estimating the usage status of the one or more devices by analyzing the peak position of the reception time interval of the pulse signal and the frequency at each peak position when the usage record information is represented by a histogram,
Program to function as. Computer
Receiving means for receiving pulse information including at least a reception date and time or a reception time interval of a pulse signal transmitted from a measuring instrument at a time interval according to a usage amount of a utility by one or a plurality of devices;
Based on the pulse information received within the predetermined period, the usage record information for indicating the utility use record in a histogram representing the frequency in the reception time interval with respect to the reception time interval of each pulse signal transmitted within the predetermined period. Generating means for generating
Receiving pulse signals when the usage record information recently generated by the generation means and the use record information stored in the storage means for storing the use record information generated by the generation means are respectively expressed by histograms A determination means for determining the presence or absence of an abnormality related to the use of the utility by comparing the peak positions of the time intervals;
Program to function as.

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