JP7682074B2 - Maintenance management device, maintenance management system, maintenance management method, and computer program - Google Patents

Description

This disclosure relates to a maintenance management device, a maintenance management system, a maintenance management method, and a computer program that perform maintenance management of plant equipment.

In various plants, equipment inspections are carried out to ensure stable operation of the equipment. Traditionally, inspection work at plants has been carried out by inspection workers, but there is a demand for more efficient inspection work due to the need to reduce labor costs and a shortage of skilled inspection workers.

Patent Document 1 discloses a maintenance management support system that uses information stored in a database, such as the plant's operating status and maintenance inspection results, to evaluate the risks of equipment and facilities, and determines one of the operation modes, such as enhanced monitoring mode, normal mode, or labor-saving mode, based on the risk assessment results, in order to achieve both sufficient maintenance inspection and operation management and rationalization.

JP 2019-191990 A

The maintenance support system described in Patent Document 1 evaluates risks using past maintenance inspection results and determines the operating mode according to the risk assessment results, which does not adequately reflect the state of the equipment and does not set an appropriate operating mode. As a result, monitoring is strengthened when it is not actually necessary, which may increase the amount of inspection work. For this reason, the maintenance support system described in Patent Document 1 is insufficient in terms of labor savings, and further efficiency improvements in inspection work are desired.

The present disclosure has been made in consideration of the above, and aims to obtain a maintenance management device that can make inspection work more efficient.

In order to solve the above-mentioned problems and achieve the objectives, the maintenance management device disclosed herein includes an inspection work flow creation unit that creates an inspection work flow in which inspection is simplified or omitted when the deterioration of equipment constituting the equipment is not advanced compared to the deterioration level at the time of the previous inspection in the plant, using the deterioration level determined from the diagnosis result of a deterioration diagnosis using status information indicating the status of the equipment in the plant at the time of inspection work, and an output unit that outputs the inspection work flow.

The maintenance management device disclosed herein has the effect of making inspection work more efficient.

FIG. 1 is a diagram showing an example of a configuration of a maintenance management system according to an embodiment; FIG. 2 is a diagram showing an example of the configuration of each diagnostic device and an instrument reader according to the embodiment; FIG. 1 is a diagram showing an example of the configuration of a maintenance management device according to an embodiment; FIG. 2 is a diagram showing a configuration example of a terminal according to an embodiment; A flowchart showing an example of a process for creating an inspection work flow according to an embodiment. FIG. 1 is a diagram showing an example of deterioration level correspondence information according to an embodiment; FIG. 1 is a diagram showing an example of inspection content information according to an embodiment; FIG. 13 is a diagram showing another example of the inspection content information according to the embodiment. FIG. 1 is a diagram for explaining inspection by area according to an embodiment; 1 is a flowchart showing an example of a processing procedure in a terminal according to an embodiment. FIG. 1 is a diagram showing an example of a dial of an instrument according to an embodiment; A flowchart showing an example of deterioration diagnosis according to an embodiment using inspection results. A flowchart showing an example of a procedure for creating an update plan according to an embodiment. FIG. 1 is a diagram showing an example of the configuration of a computer system that realizes a maintenance management device according to an embodiment.

The maintenance management device, maintenance management system, maintenance management method, and computer program according to the embodiments are described in detail below with reference to the drawings.

FIG. 1 is a diagram showing an example of the configuration of a maintenance management system according to an embodiment. The maintenance management system 10 of this embodiment includes a maintenance management device 3 of this embodiment and a terminal 4. The maintenance management device 3 is a device that performs maintenance management of plants such as water treatment plants, power plants, and various production factories. In the example shown in FIG. 1, a monitoring system 1 that monitors the entire plant includes the maintenance management device 3. That is, in the example shown in FIG. 1, the monitoring system 1 also functions as the maintenance management device 3. In the following, a water treatment plant will be described as an example of a plant, but the plant is not limited to a water treatment plant.

The monitoring system 1 includes a maintenance management device 3 and a display unit 2. The maintenance management device 3 performs a degradation diagnosis to estimate the degree of degradation for each degradation diagnosis item based on sensor information, which is status data indicating the status of each piece of equipment in the plant, and creates an inspection work flow based on the degradation diagnosis results and information stored in the database device 6. The maintenance management device 3 outputs the sensor information, diagnosis results, and inspection work flow to the display unit 2 and the terminal 4. The maintenance management device 3 creates an equipment update plan based on the diagnosis results, and stores the update plan in the memory unit 7 of the database device 6. The maintenance management device 3 stores the diagnosis results in the memory unit 7 of the database device 6 as degradation diagnosis results.

The database device 6 includes a storage unit 7 that stores various information as a database. For example, the storage unit 7 of the database device 6 stores inspection work information, update plans, deterioration diagnosis results, importance, and equipment health. The inspection work information is information including the contents of the inspection work for each piece of equipment according to the degree of deterioration. The importance is the importance of the equipment constituting the equipment in the plant, and is stored in the storage unit 7 in advance. The equipment health is the health of the equipment constituting the equipment in the plant, and is information indicating the health in units of replaceable equipment, for example. Details of the information stored in the database device 6 will be described later. Other information may also be stored in the storage unit 7 of the database device 6. Note that in FIG. 1, the database device 6 is described as one device, but the database device 6 may be part of the maintenance management device 3 or part of the monitoring system 1. The database device 6 may also be divided into multiple devices.

In the example shown in FIG. 1, a water treatment plant, which is an example of a plant subject to maintenance management by the maintenance management device 3, includes substation equipment, machinery, and water treatment equipment. The substation equipment includes a transformer 51 and a distribution board 52 including a circuit breaker 53. The transformer 51 and the distribution board 52 are provided with gauges 54 and 55 that measure the status of the transformer 51 and the circuit breaker 53, respectively. The gauge 54 transmits the measurement results to the substation equipment controller 50 as sensor information. The transformer 51 and the distribution board 52 are provided with sensors (not shown) that detect the status of the transformer 51 and the circuit breaker 53, and the sensors transmit the detection results as sensor information to the substation equipment controller 50, which then transmits the received sensor information to the monitoring system 1. In addition, a transformer diagnostic device 56 is provided near the transformer 51 to perform a deterioration diagnosis using sensor information indicating the state of the transformer 51, and a circuit breaker diagnostic device 57 is provided near the distribution board 52 to perform a deterioration diagnosis of the circuit breaker 53 using sensor information indicating the state of the circuit breaker 53. The transformer diagnostic device 56 and the circuit breaker diagnostic device 57 transmit the sensor information and diagnosis result information indicating the diagnosis result of the deterioration diagnosis to the monitoring system 1. Details of the transformer diagnostic device 56 and the circuit breaker diagnostic device 57 will be described later.

The mechanical equipment includes a switchboard 61 and equipment 64. The equipment 64 includes a motor 65, a pump 66, and a blower 67. The switchboard 61 includes an electric circuit diagnostic device 62 that performs deterioration diagnosis of the electric circuit using sensor information indicating the state of the electric circuit, and an equipment diagnostic device 63 that performs deterioration diagnosis of each device in the equipment 64 using sensor information indicating the state of the motor 65, the pump 66, and the blower 67. The switchboard 61 and the equipment 64 are provided with sensors (not shown) that detect the state of the switchboard 61 and the equipment 64, and the sensors transmit the detection results as sensor information to the mechanical equipment controller 60, and the mechanical equipment controller 60 transmits the received sensor information to the monitoring system 1. The switchboard 61 and the equipment 64 are provided with meters 68 and 69 that measure the state of the electric circuit diagnostic device 62 and the equipment 64, respectively. The electrical circuit diagnostic device 62 and the equipment diagnostic device 63 transmit sensor information and diagnostic result information indicating the results of the deterioration diagnosis to the monitoring system 1. Details of the electrical circuit diagnostic device 62 and the equipment diagnostic device 63 will be described later.

The water treatment facility includes a primary sedimentation tank 71, a biological reaction tank 73, and a final sedimentation tank 76. The biological reaction tank 73 includes a filtration membrane 74. The primary sedimentation tank 71, the biological reaction tank 73, and the final sedimentation tank 76 include sensors 72, 75, and 77 that detect the state of the primary sedimentation tank 71, the biological reaction tank 73, and the final sedimentation tank 76, respectively. The sensors 72, 75, and 77 include, for example, a water quality sensor, a dissolved oxygen meter, a water thermometer, an aeration meter, a water/sludge flow meter, and the like. The sensor information obtained by these sensors includes, for example, aeration volume, electrical conductivity, ammonia concentration, dissolved oxygen, water temperature, and the like. The sensor 75 includes, for example, a transmembrane pressure meter, a filtration flow meter, a water thermometer, and the like that detect the state of the filtration membrane 74. For example, the sensor information obtained by the sensor 75 includes at least one of the transmembrane pressure meter, the filtration flow rate, and the water temperature of the filtration membrane 74. Sensors 72, 75, and 77 transmit the sensor information, which is the detection result, to water treatment equipment controller 70, and water treatment equipment controller 70 transmits the received sensor information to monitoring system 1. Primary sedimentation tank 71, biological reaction tank 73, and final sedimentation tank 76 are provided with gauges 78, 79, and 80 that measure the conditions of primary sedimentation tank 71, biological reaction tank 73, and final sedimentation tank 76, respectively.

Hereinafter, when the instruments 54, 55, 68, 69, 78, 79, and 80 are not differentiated from one another, they will simply be referred to as instruments. Furthermore, when the sensors 72, 75, and 77 and the above-mentioned sensors not shown in the figures are not differentiated from one another, they will be referred to as sensors. The sensors are capable of outputting sensor information, which is the detection result, as an electrical signal to another device. The instruments present the detection result to an inspection worker who checks the instrument by displaying the detection result together with a scale, and at least some of the instruments may be capable of not only displaying the detection result but also transmitting it to another device. In the example shown in FIG. 1, the instrument 54 displays the detection result and transmits it to the monitoring system 1 via the substation equipment controller 50.

The configuration of the water treatment plant shown in FIG. 1 is an example, and the equipment of the water treatment plant and the devices constituting each facility are not limited to the example shown in FIG. 1. The number of sensors and the number of instruments shown in FIG. 1 are also not limited to the example shown in FIG. 1. As described above, when a plant other than a water treatment plant is subject to maintenance management by the maintenance management device 3, the equipment configuration may be appropriate for the plant, and instruments and sensors that detect the state of the equipment are provided according to the equipment of the plant. In the example shown in FIG. 1, each device and each apparatus in each facility transmits information to the monitoring system 1 via a controller such as the substation equipment controller 50, the machine equipment controller 60, and the water treatment equipment controller 70, but this is not limited thereto. Each device and each apparatus in each facility may transmit information directly to the monitoring system 1 without passing through a controller, or may transmit information to the monitoring system 1 via another device not shown.

The terminal 4 is a portable terminal that can be carried by an inspection worker, such as a tablet, smartphone, or personal computer. The terminal 4 appropriately displays the sensor information, diagnosis results, and inspection work flow received from the maintenance management device 3 according to the selection of the inspection worker. This allows the inspection worker to perform the inspection work while checking the inspection work flow displayed on the terminal 4. Furthermore, the inspection worker can determine the locations that should be inspected with priority by the sensor information and diagnosis results displayed on the terminal 4, and therefore can perform the inspection work efficiently. The terminal 4 may also transmit and display the inspection work flow, sensor information, diagnosis results, etc. on a glasses-type display called smart glasses or AR (Augmented Reality) glasses that can be worn by the worker.

In addition, during the inspection work, the inspection worker may have the meter reader 5 read the detection result of the meter. The meter reading information indicating the result of the reading by the meter reader 5 is transmitted to the terminal 4. The terminal 4 transmits the meter reading information to the monitoring system 1. Note that the meter reader 5 may transmit the meter reading information to the monitoring system 1 without going through the terminal 4. The meter reader 5 may be a standalone device having an image capturing function, or may be the above-mentioned glasses-type display having a camera function. The terminal 4 may also have the function of the meter reader 5. Here, an example is described in which the meter reader 5 or the terminal 4 captures an image of the meter, obtains the indicated value of the meter by image processing the image obtained by capturing the image, and generates meter reading information indicating the obtained indicated value. However, this is not limited to this, and the meter reader 5 or the terminal 4 may transmit the captured image to the monitoring system 1, and the maintenance management device 3 of the monitoring system 1 may use the received image to obtain the indicated value of the meter.

The inspection worker may input the inspection results to the terminal 4, and the terminal 4 may transmit the inspection results to the monitoring system 1. The inspection worker may input the results of, for example, visual inspection or listening to the inspection results to the terminal 4 as the inspection results. If the inspection worker performs the inspection using a measuring instrument used in the inspection work, such as a vibration meter, the inspection worker may check the measurement results of the measuring instrument and input them to the terminal 4, or if the terminal 4 is capable of receiving the measurement results of the measuring instrument, the terminal 4 may acquire and display the measurement results. The terminal 4 may also transmit the acquired measurement results to the monitoring system 1. The measuring instrument may transmit the measurement results to the monitoring system 1 directly or via a controller such as the substation equipment controller 50, the machine equipment controller 60, or the water treatment equipment controller 70.

In general, inspection work at plants is carried out periodically. For example, in the case of a water treatment plant, traditionally, on-site inspection workers would patrol each facility every day, inspecting it based on the five senses, such as visual inspection and hearing, and record the inspection results in an inspection sheet. Water treatment plants have multiple facilities, such as substation equipment, machinery, and water treatment equipment, spread over a wide area, so inspection work takes time and effort. On the other hand, stable operation and management at water treatment plants may not be possible due to a decrease in water fee income and the retirement of veteran engineers. In addition, the possibility of equipment failure due to facility aging is increasing, and maintenance costs are also on the rise. For this reason, water treatment plants are expected to reduce the labor, manpower, and efficiency of maintenance. On the other hand, if inspection work is uniformly omitted, inspection of deteriorated equipment may not be performed sufficiently, which may affect the operation of the entire plant. For this reason, it is desirable to achieve efficiency while performing inspection work appropriately. Even in plants other than water treatment plants, inspection work generally requires inspection of multiple pieces of equipment, and similarly, in order to reduce labor costs and operation and maintenance costs, it is desirable to perform inspection work thoroughly while making the work more efficient.

The maintenance management device 3 of this embodiment generates an inspection work flow according to the diagnosis result, i.e., the estimated degree of deterioration, so that, for example, detailed inspection work is performed for equipment estimated to be degraded, and inspection work that is simpler than the inspection work for equipment estimated to be degraded is performed for equipment estimated to be not degraded, thereby performing sufficient inspection when necessary and simplifying the inspection work when detailed inspection is not necessary. In this way, the maintenance management device 3 of this embodiment can make the inspection work more efficient.

Figure 2 is a diagram showing an example of the configuration of each diagnostic device and the meter reader 5 in this embodiment. As shown in Figure 2, the transformer diagnostic device 56 includes a communication unit 561, a sensor unit 562, and a deterioration diagnosis analysis unit 563. The sensor unit 562 includes a sensor such as an AE (Acoustic Emission) sensor that detects the state of the transformer 51, and outputs sensor information indicating the detection results by the sensor to the deterioration diagnosis analysis unit 563 and the communication unit 561. The deterioration diagnosis analysis unit 563 uses the sensor information to perform a deterioration diagnosis analysis, i.e., a deterioration diagnosis that estimates the degree of deterioration.

There are no particular restrictions on the specific method of the deterioration diagnosis performed by the deterioration diagnosis analysis unit 563, but for example, a deterioration diagnosis method used in a technique called CBM (Condition Based Maintenance) can be used. For example, the deterioration diagnosis method may be a method using a frequency spectrum of sensor information obtained as time-series data, a method using a threshold value, or a method using machine learning. The method using the frequency spectrum, for example, obtains the frequency spectrum of the sensor information obtained as time-series data, calculates a feature amount in the frequency spectrum, and estimates the deterioration degree according to the feature amount. This feature amount is, for example, a parameter representing the frequency spectrum shape or a value at a point in the frequency spectrum that satisfies a specified condition, but is not limited to these. The method using a threshold value is a method of estimating the deterioration degree by predetermining a threshold value according to the deterioration degree for the value of the sensor information. The method using machine learning may be, for example, a method in which a skilled inspection worker or the like provides a deterioration degree as correct answer data for each feature amount obtained from the sensor information, and a learned model is generated by supervised learning using multiple data sets including the feature amount and the correct answer data. The feature may be the amplitude of the sensor information, a specific frequency component, or the like, or may be the sensor information itself cut out for a certain period of time. When using such a trained model, the degradation diagnosis analysis unit 563 extracts the feature from the sensor information and inputs the extracted feature into the trained model to obtain an estimated result of the degradation level. Degradation diagnosis may also be performed by machine learning using clustering such as the K-means method. The method of degradation diagnosis is not limited to the above-mentioned examples.

Here, an example is described in which a quantity indicating the degree of deterioration is calculated as the diagnosis result of the deterioration diagnosis by the deterioration diagnosis analysis unit 563, and the maintenance management device 3 calculates the degree of deterioration from the diagnosis result based on the calculated quantity. However, the result of the deterioration diagnosis by the deterioration diagnosis analysis unit 563 may be the degree of deterioration itself. In addition, the deterioration diagnosis analysis unit 563 may calculate one diagnosis result using sensor information obtained from one sensor, or may calculate one diagnosis result using multiple sensor information obtained from multiple sensors. The diagnosis result may be obtained for each device such as the transformer 51, or may be obtained for each component that constitutes the device. For example, the diagnosis results of each of the parts A and B of the device X may be obtained. In other words, if the unit for which the diagnosis result is obtained, that is, the unit for which the estimation result of the degree of deterioration is obtained, is called the deterioration estimation item, the deterioration diagnosis analysis unit 563 will calculate the diagnosis result for each deterioration estimation item.

The degradation diagnosis analysis unit 563 outputs diagnosis result information indicating the diagnosis result to the communication unit 561. The communication unit 561 transmits the diagnosis result information and the sensor information to the substation equipment controller 50. The substation equipment controller 50 transmits the diagnosis result information and the sensor information received from the transformer diagnosis device 56 to the maintenance management device 3 in the monitoring system 1.

The circuit breaker diagnostic device 57 includes a communication unit 571, a sensor unit 572, and a degradation diagnosis analysis unit 573. The sensor unit 572 includes, as sensors, for example, a microphone that detects the operating sound of the circuit breaker 53, an auxiliary contact relay that detects the voltage of the auxiliary contact of the circuit breaker 53, and a control current relay that detects the control current of the circuit breaker 53. The functions and operations of the communication unit 571, the sensor unit 572, and the degradation diagnosis analysis unit 573 are similar to the functions and operations of the communication unit 561, the sensor unit 562, and the degradation diagnosis analysis unit 563 of the transformer diagnostic device 56, respectively, except that the sensor unit 572 includes a sensor that detects the state of the circuit breaker 53, and the degradation diagnosis analysis unit 573 performs a degradation diagnosis corresponding to the circuit breaker 53.

The electrical circuit diagnosis device 62 includes a communication unit 621, a sensor unit 622, and a degradation diagnosis analysis unit 623. The sensor unit 622 includes, as sensors, for example, a leakage current sensor that detects leakage current in the electrical circuit, and a voltage sensor that detects the voltage of the electrical circuit. The functions and operations of the communication unit 621, the sensor unit 622, and the degradation diagnosis analysis unit 623 are similar to the functions and operations of the communication unit 561, the sensor unit 562, and the degradation diagnosis analysis unit 563 of the transformer diagnosis device 56, respectively, except that the sensor unit 622 includes a sensor that detects the state of the electrical circuit, and the degradation diagnosis analysis unit 623 performs a degradation diagnosis corresponding to the electrical circuit.

The equipment diagnostic device 63 includes a communication unit 631, a sensor unit 632, and a degradation diagnosis analysis unit 633. The sensor unit 632 includes, as a sensor, a current sensor that detects the current of the motor 65 or a sensor that detects the current and voltage of the motor 65. The sensor unit 632 also includes, as a sensor, a current sensor that detects the current of the pump 66 and a current sensor that detects the current of the blower 67. The functions and operations of the communication unit 631, the sensor unit 632, and the degradation diagnosis analysis unit 633 are similar to those of the communication unit 561, the sensor unit 562, and the degradation diagnosis analysis unit 563 of the transformer diagnostic device 56, respectively, except that the sensor unit 632 includes a sensor that detects the state of each device of the equipment 64, and the degradation diagnosis analysis unit 633 performs a degradation diagnosis corresponding to each device of the equipment 64. The degradation diagnosis analysis unit 633 may also perform a degradation diagnosis called, for example, induction motor current signature analysis.

The gauge reader 5 includes a communication unit 501, an image analysis unit 502, and an image acquisition unit 503. The image acquisition unit 503 is an imaging device that captures an image of the gauge and outputs the captured image to the image analysis unit 502. The image analysis unit 502 determines the gauge's indicated value by analyzing the image received from the image acquisition unit 503, and outputs information indicating the determined indicated value as gauge reading information to the communication unit 501. The communication unit 501 transmits the gauge reading information received from the image analysis unit 502 to the terminal 4. The terminal 4 transmits the gauge reading information received from the gauge reader 5 to the maintenance management device 3 of the monitoring system 1. As described above, the terminal 4 may have the functions of the gauge reader 5.

Next, an example of the configuration of the maintenance management device 3 of this embodiment will be described. FIG. 3 is a diagram showing an example of the configuration of the maintenance management device 3 of this embodiment. The maintenance management device 3 in the monitoring system 1 includes a sensor information acquisition unit 31, a diagnosis result information acquisition unit 32, a read information acquisition unit 33, an information transmission unit 34, an analysis unit 35, and a determination unit 36.

The sensor information acquisition unit 31 acquires sensor information indicating the state of the plant equipment by receiving sensor information from each diagnostic device and sensor via each controller of the substation equipment controller 50, the machine equipment controller 60, and the water treatment equipment controller 70, and outputs the acquired sensor information to the analysis unit 35. The diagnosis result information acquisition unit 32 acquires diagnosis result information from each diagnostic device by receiving diagnosis result information from the transformer diagnosis device 56 and the circuit breaker diagnosis device 57 via the terminal 4, and receives diagnosis result information from the electric circuit diagnosis device 62 and the equipment diagnosis device 63 via the machine equipment controller 60, and outputs the acquired diagnosis result information to the analysis unit 35. The diagnosis result information acquisition unit 32 may receive diagnosis result information from the transformer diagnosis device 56 and the circuit breaker diagnosis device 57 via the substation equipment controller 50. The reading information acquisition unit 33 acquires meter reading information by receiving meter reading information from the terminal 4, and outputs the acquired meter reading information to the analysis unit 35.

The analysis unit 35 includes a deterioration diagnosis analysis unit 351, a deterioration degree calculation unit 352, and an equipment health calculation unit 353. The deterioration diagnosis analysis unit 351 performs deterioration diagnosis based on the sensor information of the sensors 72, 75, and 77 of the water treatment facility among the sensor information. The deterioration diagnosis performed by the deterioration diagnosis analysis unit 351 is similar to the deterioration diagnosis in each of the diagnostic devices of the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63. The deterioration degree calculation unit 352 calculates the deterioration degree for each diagnosis result, that is, for each deterioration diagnosis item, using the diagnosis result information received from the diagnosis result information acquisition unit 32, the diagnosis result information indicating the diagnosis result of the deterioration diagnosis analysis unit 351, and the deterioration degree correspondence information indicating the correspondence between the diagnosis result and the deterioration degree. Note that, when the diagnosis result (deterioration diagnosis result) is calculated as the deterioration degree itself, it is not necessary to include the deterioration degree calculation unit 352. In other words, the deterioration degree may be determined based on the diagnosis result of the deterioration diagnosis, and the diagnosis result itself may be the deterioration degree. The equipment health calculation unit 353 calculates the equipment health indicating the health of each equipment unit using the deterioration degree calculated by the deterioration degree calculation unit 352. In addition, when the deterioration diagnosis analysis unit 351 receives meter reading information from the reading information acquisition unit 33, it performs deterioration diagnosis using the meter reading information.

The deterioration degree is calculated for each deterioration diagnosis item, and is not necessarily calculated for each equipment. For example, suppose that three diagnosis results are obtained by the deterioration diagnosis of the circuit breaker 53: a diagnosis result using the operating sound as sensor information, a diagnosis result using the voltage of the auxiliary contact signal as sensor information, and a diagnosis result using the control current as sensor information. In this case, each diagnosis result corresponds to each deterioration diagnosis item, and a deterioration degree is calculated for each diagnosis result. Since these are the deterioration degrees of the circuit breaker 53, which is the same equipment, the equipment health of the circuit breaker 53 is calculated taking these three deterioration degrees into consideration. The equipment health may be an average value of the deterioration degrees corresponding to the same equipment, or a weighted average reflecting a weighting coefficient for each deterioration degree. The weighting coefficient corresponding to each deterioration degree is determined in advance. Note that the equipment health is used in the update plan described later, and is the unit in which replacement is performed in the equipment health, and when replacement is performed in parts that constitute each equipment, the equipment health is calculated in parts.

The analysis unit 35 outputs the sensor information received from the sensor information acquisition unit 31, the diagnosis result information received from the diagnosis result information acquisition unit 32, the meter reading information received from the reading information acquisition unit 33, the diagnosis result information indicating the diagnosis result by the degradation diagnosis analysis unit 351, the deterioration degree calculated by the deterioration degree calculation unit 352, and the equipment healthiness calculated by the equipment healthiness calculation unit 353 to the judgment unit 36, the display unit 2, and the information transmission unit 34. The analysis unit 35 also stores the diagnosis result information received from the diagnosis result information acquisition unit 32 and the diagnosis result information indicating the diagnosis result by the degradation diagnosis analysis unit 351 as a deterioration diagnosis result in the memory unit 7 of the database device 6, and stores the equipment healthiness calculated by the equipment healthiness calculation unit 353 in the memory unit 7 of the database device 6.

The judgment unit 36 includes an inspection work flow creation unit 361, a sensor failure judgment unit 362, and an update plan creation unit 363. The inspection work flow creation unit 361 creates an inspection work flow in the plant using the deterioration level determined from the diagnosis result of the deterioration diagnosis using the sensor information, which is status information indicating the status of the equipment in the plant. In detail, the inspection work flow creation unit 361 creates an inspection work flow according to the deterioration level using the deterioration level received from the analysis unit 35 and the inspection work information stored in the storage unit 7 of the database device 6, and outputs the created inspection work flow to the display unit 2 and the information transmission unit 34. In addition, the inspection work flow creation unit 361 may further use the importance of each device stored in the storage unit 7 of the database device 6 when creating the inspection work flow. The judgment unit 36 outputs the importance of each device stored in the storage unit 7 of the database device 6 to the display unit 2 and the information transmission unit 34.

If the meter reading information includes information that is also obtained as sensor information, the sensor failure determination unit 362 compares the meter reading information with the corresponding sensor information and determines whether or not there is a failure in the meter based on the comparison result. For example, if the difference between the meter reading information and the corresponding sensor information is equal to or greater than a threshold value, the sensor failure determination unit 362 determines that there is a failure in the meter. The sensor failure determination unit 362 may also determine whether or not there is a failure in the instrumentation device based on the comparison result between the meter reading information and the corresponding sensor information. In this way, the sensor failure determination unit 362 may determine whether or not there is a failure in the meter or the instrumentation device using the sensor information transmitted from the meter corresponding to the meter reading information. The sensor failure determination unit 362 outputs the result of the meter failure determination to the display unit 2 and the information transmission unit 34. The update plan creation unit 363 creates an update plan for the equipment and parts using the equipment health level received from the analysis unit 35, and stores the created update plan in the memory unit 7 of the database device 6 and outputs it to the display unit 2 and the information transmission unit 34.

The information transmission unit 34 transmits to the terminal 4 the sensor information, diagnosis result information, and equipment health received from the analysis unit 35, and the inspection work flow, instrument failure judgment results, update plan, and importance received from the judgment unit 36.

The display unit 2 displays the sensor information, instrument reading information, diagnostic result information, and equipment health received from the analysis unit 35, and the inspection work flow, instrument failure judgment results, update plan, and importance received from the judgment unit 36. The display unit 2 may display all of these simultaneously, or may switch the information to be displayed depending on the selection result by an inspection worker or the like via an input means (not shown). For example, the display unit 2 may switch between graph display and numerical display for time series data such as sensor information, may display two or more selected pieces of information simultaneously, or may enlarge or reduce the display depending on the input. There are no particular restrictions on the display method in the display unit 2, and any display method may be used for display. The display unit 2 may also be provided within the maintenance management device 3.

The information transmission unit 34 and the display unit 2 are an example of an output unit that outputs an inspection work flow. The information transmission unit 34 outputs the inspection work flow by transmitting it to the terminal 4, and the display unit 2 outputs the inspection work flow by displaying the inspection work flow. When the inspection work flow is transmitted to the terminal 4, the inspection work flow is displayed by the terminal 4. This allows the inspection worker to visually confirm the inspection work flow confirmed on the display unit 2 or the terminal 4.

Next, an example of the configuration of the terminal 4 of this embodiment will be described. FIG. 4 is a diagram showing an example of the configuration of the terminal 4 of this embodiment. The terminal 4 includes an input receiving unit 41, an information acquiring unit 42, an inspection work flow acquiring unit 43, a read information acquiring unit 44, an information transmitting unit 45, and a display unit 46.

The input reception unit 41 receives input from users such as inspection workers. The information acquisition unit 42 acquires sensor information, results of instrument failure judgment, diagnostic result information, and various information such as equipment health, update plans, and importance from the maintenance management device 3, and outputs the acquired information to the display unit 46. The information acquisition unit 42 also acquires sensor information and diagnostic result information from the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63, and outputs the acquired information to the display unit 46. The inspection work flow acquisition unit 43 acquires the inspection work flow by receiving the inspection work flow from the maintenance management device 3, and outputs the acquired inspection work flow to the display unit 46.

The read information acquisition unit 44 acquires the meter read information by receiving the meter read information from the meter reader 5, and outputs the acquired meter read information to the information transmission unit 45. The information transmission unit 45 transmits the meter read information to the maintenance management device 3.

The display unit 46 displays various information received from the information acquisition unit 42, the inspection work flow received from the inspection work flow acquisition unit 43, and the instrument reading information received from the reading information acquisition unit 44. The display unit 46 may display all of these simultaneously, as in the display unit 2 described above, or may switch the information to be displayed depending on the selection result selected by an inspection worker or the like via the input acceptance unit 41. For example, the display unit 46 may switch between graph display and numerical display for time series data such as sensor information, may display two or more selected pieces of information simultaneously, or may enlarge or reduce the display depending on the input. There are no particular restrictions on the display method in the display unit 46, and any display method may be used.

In the above example, the maintenance management device 3 is provided within the monitoring system 1, but the maintenance management device 3 may be provided separately from the monitoring system 1. The maintenance management device 3 may also be provided within the terminal 4, or the maintenance management device 3 may be provided in one of the diagnostic devices, the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63.

In the above example, the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63 are provided separately from the maintenance management device 3, and the maintenance management device 3 performs deterioration diagnosis on the water treatment equipment. However, deterioration diagnosis of all the equipment may be performed by the maintenance management device 3. Alternatively, a deterioration diagnosis device may be provided that performs deterioration diagnosis of each device of the water treatment equipment, and the maintenance management device 3 may also obtain diagnosis result information of the water treatment equipment from the deterioration diagnosis device. Deterioration diagnosis of each piece of equipment may be performed by the maintenance management device 3, or by a separate diagnostic device, and the device that performs the deterioration diagnosis is not limited to the above example.

Next, the operation of this embodiment will be described. FIG. 5 is a flowchart showing an example of the process of creating an inspection work flow of this embodiment. The maintenance management device 3 judges whether it is the timing to create an inspection work flow (step S1), and if it is not the timing to create an inspection work flow (step S1 No), the process is terminated. If it is the timing to create an inspection work flow (step S1 Yes), the maintenance management device 3 acquires a deterioration diagnosis result (step S2). In step S1, in detail, for example, if a time for performing regular inspection work is set, the deterioration degree calculation unit 352 of the maintenance management device 3 judges that it is the timing to create an inspection work flow when that time arrives. Alternatively, when an inspection worker instructs the creation of an inspection work flow via an input means of the maintenance management device 3 (not shown) or via the terminal 4, it judges that it is the timing to create an inspection work flow. In step S2, in detail, for example, the sensor information acquisition unit 31 and the diagnosis result information acquisition unit 32 of the maintenance management device 3 acquire sensor information and diagnosis result information, respectively, and the deterioration diagnosis analysis unit 351 performs a deterioration diagnosis using the sensor information, thereby acquiring a deterioration diagnosis result. Alternatively, the sensor information acquisition unit 31 and the diagnosis result information acquisition unit 32 acquire information, and the deterioration diagnosis analysis unit 351 performs deterioration diagnosis at a set calculation period or each time information is acquired, and the deterioration diagnosis information is stored as a deterioration diagnosis result in the memory unit 7 of the database device 6, and in step S2, the deterioration degree calculation unit 352 may read out the deterioration diagnosis result from the memory unit 7 of the database device 6.

Next, the maintenance management device 3 calculates the deterioration degree (step S3). In detail, the deterioration degree calculation unit 352 calculates the deterioration degree corresponding to the deterioration diagnosis result for each deterioration diagnosis item using the deterioration degree correspondence information held, and outputs the calculated deterioration degree to the inspection work flow creation unit 361 of the judgment unit 36. FIG. 6 is a diagram showing an example of the deterioration degree correspondence information of this embodiment. In the example shown in FIG. 6, the deterioration degree correspondence information includes the range of values obtained as the diagnosis result for each deterioration diagnosis item and the deterioration degree corresponding to the range. In the example shown in FIG. 6, the deterioration degree is shown in three stages from 1 to 3, and a deterioration degree of 1 corresponds to normal, a deterioration degree of 2 corresponds to caution, and a deterioration degree of 3 corresponds to abnormal. The deterioration degree is not limited to this, and may be expressed in two stages of normal and abnormal, or may be expressed in four or more stages. Note that here, an example is shown in which the deterioration diagnosis result is some quantity indicating the deterioration degree, but as described above, the deterioration diagnosis result may be the deterioration degree itself. In this case, the maintenance management device 3 does not need to perform step S3. Also, here, the less the degree of deterioration, the smaller the value of the deterioration level.

Returning to the explanation of FIG. 5, the maintenance management device 3 creates an inspection work flow (step S4) and outputs the created inspection work flow (step S5). In detail, in step S4, the inspection work flow creation unit 361 of the judgment unit 36 creates an inspection work flow according to the deterioration degree using the deterioration degree received from the deterioration degree calculation unit 352 and the inspection work information stored in the storage unit 7 of the database device 6. In step S5, the inspection work flow creation unit 361 of the judgment unit 36 outputs the inspection work flow to the display unit 2 and the information transmission unit 34. This allows the display unit 2 to display the inspection work flow. In addition, the information transmission unit 34 transmits the inspection work flow to the terminal 4, so that the terminal 4 can display the inspection work flow. Note that the inspection work flow only needs to be displayed on at least one of the display unit 2 and the terminal 4, so in step S5, at least one of the inspection work flow outputs to the display unit 2 and the information transmission unit 34 is performed.

Next, the method for creating the inspection work flow in step S4 described above will be described in detail. The inspection work information stored in the memory unit 7 of the database device 6 includes, for example, inspection content information indicating the content of the inspection work corresponding to each deterioration level for each deterioration diagnosis item, and a standard inspection work flow.

Figure 7 is a diagram showing an example of inspection content information in this embodiment. The example shown in Figure 7 shows inspection content information related to deterioration diagnosis item A, and the inspection content information includes the deterioration level and the inspection work content corresponding to the deterioration level. In the example shown in Figure 7, when the deterioration level is 1, i.e., normal, the inspection work is visual inspection and confirmation of abnormal sounds (listening), when the deterioration level is 2, i.e., caution is required, the inspection work is visual inspection and confirmation using a listening rod, and when the deterioration level is 3, i.e., abnormal, the inspection work is visual inspection, confirmation using a listening rod, and confirmation using a vibration sensor.

Figure 8 is a diagram showing another example of the inspection content information of this embodiment. The example shown in Figure 8 shows inspection content information related to deterioration diagnosis item B, and the inspection content information indicates that when the deterioration level is 1, i.e., normal, no inspection is required, when the deterioration level is 2, i.e., caution is required, the inspection work is to perform visual instrument readings, and when the deterioration level is 3, i.e., abnormal, the inspection work is to perform visual instrument readings and confirmation using a vibration sensor.

Figures 7 and 8 show the inspection content information corresponding to one deterioration diagnosis item, and the inspection content information as exemplified in Figures 7 and 8 is predefined for each deterioration diagnosis item. Figures 7 and 8 are examples, and the contents of the inspection work corresponding to each deterioration level are not limited to these examples. Note that the deterioration diagnosis item corresponds to the diagnosis result based on the sensor information as described above. For example, if the sensor information corresponding to the deterioration diagnosis item is the detection result of the operating sound of the circuit breaker 53, the deterioration diagnosis item is the operating sound of the circuit breaker 53. The standard inspection work flow included in the inspection work information indicates the procedure of the inspection work of the entire plant created based on the inspection content corresponding to the deterioration level of 1, that is, normal, among the inspection content information for each of these deterioration diagnosis items. The standard inspection work flow is predefined, for example, based on the arrangement of each device in the plant so that the route of the inspection worker's rounds during the inspection is shortened.

In addition, in the above example, inspection content information is defined for each degradation diagnosis item, but inspection content information may be defined for multiple degradation diagnosis items as a single unit. For example, inspection content may be defined for each combination of values of two degradation diagnosis items corresponding to the same device.

When the deterioration levels received from the deterioration level calculation unit 352 are all 1, i.e., normal, the inspection work flow creation unit 361 reads out the standard inspection work flow of the inspection work information and determines the read out standard inspection work flow as the inspection work flow. When the deterioration level calculation unit 352 has a deterioration level other than 1, the inspection work flow creation unit 361 refers to the inspection content information of the deterioration diagnosis item corresponding to that deterioration level and reads out the inspection content of that deterioration level as the correction inspection content. Then, the inspection work flow creation unit 361 reads out the standard inspection work flow of the inspection work information and updates the inspection content of the part of the read out standard inspection work flow that corresponds to the deterioration diagnosis item with a deterioration level other than 1 with the read out correction inspection content, i.e., overwrites it with the read out correction inspection content, thereby creating an inspection work flow.

In the above example, the deterioration level is expressed in three stages, but this is not limiting, and no matter how many stages the deterioration level is expressed, the inspection work flow creation unit 361 can determine the work content in the inspection work flow so that when the deterioration level exceeds the threshold value, the inspection work content takes more time than the inspection work content when the deterioration level is equal to or lower than the threshold value. When the deterioration level is in three stages as above, the threshold value is 1. Also, the above example of three stages corresponds to a case where the threshold value is set in multiple stages, where the first threshold value is 1 and the second threshold value is 2.

By performing such processing, the inspection work flow creation unit 361 can create an inspection work flow according to the deterioration level for each deterioration diagnosis item. As a result, in this embodiment, it is possible to simplify the inspection for deterioration diagnosis items whose deterioration level is 1, i.e., estimated to be normal, while performing a detailed inspection for deterioration diagnosis items whose deterioration level is not 1, i.e., estimated to be not normal, thereby making it possible to perform a thorough inspection while streamlining the inspection work.

In addition, if the deterioration level is estimated to be 1, i.e., normal, for all deterioration diagnosis items, it may be determined that the plant inspection itself is unnecessary, and in this case, the standard inspection flow may not be determined. That is, the inspection work flow creation unit 361 may create an inspection work flow indicating that the plant inspection will not be performed if the deterioration level is equal to or lower than a threshold value. As a result, when periodic inspections have been conventionally performed, such as every three hours, one inspection is omitted if the deterioration level is estimated to be 1, i.e., normal. In addition, a standard inspection flow equivalent to the conventional standard inspection flow may be determined, and, for example, even if the deterioration level is estimated to be 1, i.e., normal, inspection may be performed using the inspection work flow of the standard inspection flow if the previous inspection was omitted or if N (N is an integer equal to or greater than 2) consecutive inspections have been omitted up to the previous time, even if the deterioration level is estimated to be 1, i.e., normal, for all deterioration diagnosis items. This makes it possible to prevent inspection work from not being performed continuously for a long period of time.

In addition, if the deterioration level of all deterioration diagnosis items of the plant is the same as when the previous inspection work was performed, the inspection work flow creation unit 361 may determine that no inspection will be performed. In this case, even if the deterioration level of all deterioration diagnosis items of the plant is the same as when the previous inspection work was performed, if the previous inspection was omitted, or if N consecutive inspections have been omitted up to the previous time, an inspection may be performed.

In the above example, the deterioration level is expressed in three stages, but an inspection work flow corresponding to the deterioration level can be created in the same way when the deterioration level is expressed in two stages or four or more stages. For example, the least deteriorated deterioration level value is defined as normal, and a standard inspection flow is created in advance based on the inspection content corresponding to the normal case, and the inspection work flow creation unit 361 creates an inspection work flow corresponding to the deterioration level by modifying the inspection content according to the estimated deterioration level.

In the above example, the work content corresponding to the deterioration diagnosis item whose deterioration level is estimated to be abnormal is changed from the standard inspection flow. However, the inspection work flow creation unit 361 may use the equipment health to determine the inspection order of the equipment and create an inspection work flow that reflects the determined order. For example, the inspection work flow creation unit 361 may also change the route that the inspection worker takes during the inspection according to the equipment health. Since the equipment health is calculated based on the deterioration level, it is assumed here that the equipment health is shown in three stages, for example, like the deterioration level. As described above, since the equipment health is calculated based on the deterioration level corresponding to the same equipment, the value may not be an integer. However, for example, if the calculated value is 1 or less, it is set to 1, if it is greater than 1 and less than 2, it is set to 2, and if it is greater than 2, it is set to 3. The method of integerization is not limited to this example. In addition, the smaller the numerical value, the healthier the equipment health is, in order to match the meaning of the deterioration level and the magnitude of the numerical value. In other words, the smaller the numerical value, the lower the deterioration level and the healthier the equipment health is. It is also possible to reverse the definition of the correspondence between the numerical values of the deterioration level and the equipment health level and the degree of deterioration, so that the smaller the numerical value, the greater the deterioration. In this case, the magnitude relationship in the judgment using the threshold value can be reversed.

The inspection work flow creation unit 361 may change the inspection order, for example, to first inspect equipment with an equipment health level of 3, i.e., equipment estimated to be abnormal, then inspect equipment with an equipment health level of 2, i.e., equipment estimated to require caution, and finally inspect equipment with an equipment health level of 1, i.e., equipment estimated to be normal. In this case, if the locations of the equipment estimated to be abnormal are dispersed, the inspection work flow may be determined so that inspections are performed in order of deterioration level for each area so that inspections can be performed efficiently.

Figure 9 is a diagram for explaining the inspection by area unit in this embodiment. In the example shown in Figure 9, the plant is divided into five areas, Areas #1 to #5, in advance according to geographical location. In Figure 9, the number of abnormal, caution, and normal is written in each area, and these numbers indicate the number of values of the equipment health corresponding to the equipment in the area. For example, in Area #1, among the deterioration diagnosis items corresponding to the equipment present in Area #1, the equipment health is judged to be normal for 10 items, the equipment health is judged to be caution for 1 item, and the equipment health is judged to be abnormal for 5 items. The equipment judged to be abnormal exists not only in Area #1 but also in Area #2, Area #3, and Area #5. Therefore, if the equipment judged to be abnormal is inspected preferentially throughout the plant, for example, after patrolling not only Area #1 but also Area #2, Area #3, and Area #5, the inspection worker will move around a lot, for example, returning to Area #1 to inspect the equipment corresponding to the deterioration diagnosis items judged to be caution. For this reason, for example, equipment in area #1 is inspected in the order of abnormal, caution, and normal, and after inspection of area #1 is completed, equipment in area #2 is inspected in the order of abnormal, caution, and normal. By ordering inspections according to the degree of deterioration on an area-by-area basis, the movement of inspection workers can be reduced and inspections can be carried out efficiently.

In the above example, the inspection order is determined according to the deterioration level, but the inspection order may also be determined by taking into consideration the importance of the equipment. For example, the inspection work flow creation unit 361 may determine the inspection priority of the equipment based on the deterioration level, the importance of the equipment stored in the storage unit 7 of the database device 6, and the equipment health level corresponding to the equipment. The inspection work flow creation unit 361 then calculates the inspection priority as, for example, a value obtained by multiplying the importance of the equipment and the equipment health level. The inspection priority is not limited to this, and may be determined such that, for example, the higher the importance, the higher the priority, and the higher the equipment health level, the higher the priority. Note that, in this example, the importance is set to a larger value for the more important item. For example, the inspection work flow creation unit 361 may determine the inspection work flow so that inspections are performed in order of the determined priority, or may determine the inspection work flow so that inspections are performed in order of priority for each area as shown in FIG. 9.

Next, the operation of the terminal 4 of this embodiment will be described. FIG. 10 is a flowchart showing an example of a processing procedure in the terminal 4 of this embodiment. When performing an inspection, the inspection worker carries the terminal 4 and proceeds with the inspection work while checking the information displayed on the terminal 4. FIG. 10 shows the operation of the terminal 4 before and during the inspection work by the inspection worker. As shown in FIG. 10, the terminal 4 acquires the inspection work flow, sensor information, and diagnosis result information (step S11). In detail, the information acquisition unit 42 receives the sensor information and diagnosis result information from the maintenance management device 3, the transformer diagnosis device 56, the circuit breaker diagnosis device 57, the circuit diagnosis device 62, and the equipment diagnosis device 63, and outputs the received information to the display unit 46.

The terminal 4 displays the selected information from the inspection work flow, the sensor information, and the diagnosis result information (step S12). In detail, the input reception unit 41 receives the selection of the information to be displayed from the inspection worker, notifies the display unit 46 of the received result, and the display unit 46 displays the information corresponding to the selection result notified from the input reception unit 41. For example, before the inspection worker performs the periodic inspection work, the inspection worker can confirm the contents of the inspection work in advance by displaying the inspection work flow on the terminal 4. In addition, during the inspection work, the inspection can be performed appropriately by performing the inspection while displaying the inspection work flow on the terminal 4, or by displaying at least one of the sensor information and the diagnosis result information corresponding to the equipment being inspected on the terminal 4. Note that here, an example is shown in which the maintenance management device 3, the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63 periodically transmit the sensor information and the diagnosis result information to the terminal 4, but this is not limited to this, and the terminal 4 may acquire the corresponding information from each device after the information to be displayed is selected by the inspection worker. In this case, step S12 is performed before step S11.

Next, the terminal 4 acquires the gauge reading information (gauge reading information) (step S13). In detail, during the inspection work, the worker uses the gauge reader 5 to capture the indicated value of the gauge, and the gauge reader 5 determines the indicated value based on the image. The gauge reader 5 then transmits the gauge reading information indicating the indicated value to the terminal 4, and the read information acquisition unit 44 of the terminal 4 receives the gauge reading information from the gauge reader 5, thereby acquiring the gauge reading information. The read information acquisition unit 44 outputs the acquired gauge reading information to the display unit 46 and the information transmission unit 45. Also, when the terminal 4 has the function of the gauge reader 5, the gauge reader 5 inside the terminal 4 captures the indicated value of the gauge, the gauge reader 5 generates gauge reading information indicating the indicated value based on the image, and the read information acquisition unit 44 acquires the gauge reading information from the gauge reader 5.

Figure 11 is a diagram showing an example of the dial of an instrument according to this embodiment. For example, the dial of the instrument shown in Figure 11 shows a scale, and the measurement result is indicated by the position of the needle. Although not shown in Figure 11, at least some of the scales show corresponding numerical values, and by capturing an image of such a dial, the indicated value is read based on the numerical values corresponding to the scales and the position of the needle. Note that Figure 11 is only an example, and the method of displaying the indicated value of the instrument is not limited to this example. For example, the indicated value may be indicated by the length of a colored portion of a straight rod-shaped tube, as in a rod-shaped thermometer.

Next, the terminal 4 displays the meter reading information (step S14) and transmits the meter reading information to the maintenance management device 3 (step S15). In detail, in step S14, the display unit 46 displays the meter reading information, and in step S15, the information transmission unit 45 transmits the meter reading information to the maintenance management device 3. In step S14, the meter reading information may be displayed as a numerical value, or the terminal 4 may store past meter reading information of the corresponding meter and display the meter reading information as a graph with time on the horizontal axis and indicated value on the vertical axis. The terminal 4 may also hold information indicating the normal range for the indicated value of the meter, determine whether or not it is within the normal range based on the information, and display the determination result on the display unit 46.

The inspection worker can more appropriately determine the condition of the equipment by inspecting the corresponding equipment while taking into account the meter reading information in addition to the sensor information and diagnosis result information. Furthermore, the maintenance management device 3 may update the deterioration level and the inspection work flow using the meter reading information received from the terminal 4 as described above.

Although the gauge reading information is an example of an inspection result obtained by inspection, the inspection result of the gauge reading information may also be transmitted from the terminal 4 to the maintenance management device 3. In detail, the inspection operator inputs the inspection result for each inspection item to the terminal 4, the input receiving unit 41 outputs the input result to the information transmitting unit 45, and the information transmitting unit 45 transmits the inspection result to the maintenance management device 3. For example, in the case where there is an inspection item of visual inspection of a certain device, if the inspection operator judges that there is no abnormality by visual inspection, he/she inputs information indicating that there is no abnormality as the inspection result to the terminal 4. In addition, in the case where the inspection is performed using a measuring device such as a vibration meter, the results detected by the measuring device may be input to the terminal 4. In addition, if the measuring device can be connected to the terminal 4, the measurement results of the measuring device may be transmitted to the maintenance management device 3 via the terminal 4.

Figure 12 is a flowchart showing an example of a deterioration diagnosis of this embodiment using the inspection results. The maintenance management device 3 acquires the inspection results (step S21) and calculates the deterioration degree using the acquired inspection results (step S22). In detail, in step S21, for example, the reading information acquisition unit 33, which is an example of an inspection result acquisition unit, acquires the instrument reading information by receiving the instrument reading information from the terminal 4, and outputs the instrument reading information to the analysis unit 35. The deterioration diagnosis analysis unit 351 of the analysis unit 35 performs deterioration diagnosis using the instrument reading information. The deterioration degree calculation unit 352 calculates the deterioration degree corresponding to the deterioration diagnosis result using the instrument reading information. Alternatively, the correspondence between the indication value of the instrument reading information and the deterioration degree for the instrument reading information may be determined in advance in a table format, and the analysis unit 35 may not perform the deterioration diagnosis, and the deterioration degree calculation unit 352 may calculate the deterioration degree based on the instrument reading information and the correspondence. Note that, although an example has been described here in which the analysis unit 351 performs deterioration diagnosis using meter reading information, deterioration diagnosis using meter reading information may also be performed by each of the diagnostic devices, namely the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63.

Next, the maintenance management device 3 updates the inspection work flow (step S23). In detail, the inspection work flow creation unit 361 uses the deterioration degree calculated by the deterioration degree calculation unit 352 to update the contents of the inspection work of the part of the already created inspection work flow corresponding to the deterioration degree based on the inspection content information. In this case, the inspection content information is created in advance not only for the deterioration diagnosis item but also for each instrument. When the detection result of the instrument is obtained by both the sensor information and the instrument reading information, the inspection content information may be common. The deterioration diagnosis item and the updated inspection work flow are transmitted to the terminal 4 and displayed on the terminal 4. Similarly, when a measurement result other than the instrument reading information is obtained as the inspection result, the deterioration degree is calculated using the inspection result, as with the instrument reading information, and the inspection work flow is recreated. In this way, the inspection work flow creation unit 361 may recreate the inspection work flow using the inspection result acquired in the inspection based on the determined inspection work flow.

The equipment health level is also updated using the deterioration level that reflects the inspection results. Note that in the above example, an example was described in which the deterioration level that reflects the inspection results is used to recreate the inspection work flow, but the deterioration level that reflects the inspection results is used to calculate the equipment health level, and the process of recreating the inspection work flow does not necessarily have to be performed.

Next, the creation of an update plan according to this embodiment will be described. FIG. 13 is a flowchart showing an example of a process procedure for creating an update plan according to this embodiment. The process shown in FIG. 13 may be performed, for example, when instructed by an operator, or may be performed periodically, such as once a week. The timing of performing the process shown in FIG. 13 is not limited to these.

The maintenance management device 3 performs steps S2 and S3 in the same manner as in FIG. 5. Next, the maintenance management device 3 calculates the equipment health (step S31). In detail, the equipment health calculation unit 353 calculates the health of each equipment unit using the deterioration degree. As described in detail, the equipment health is calculated in units of equipment that can be replaced. Next, the maintenance management device 3 creates an update plan using the equipment health (step S32). In detail, the update plan creation unit 363 creates an update plan using the equipment health. Any method may be used to create the update plan, but for example, a replacement date table that defines the number of days until the next replacement for each equipment health is held, and an update plan is created based on the table. The range of the number of days until the next replacement may be defined for each equipment unit, or may be defined as the same range regardless of the equipment. Alternatively, the update plan creation unit 363 may predict the future equipment health for each equipment unit using the equipment health, and may determine the update plan based on the day when the predicted equipment health reaches a defined threshold value. The method of creating an update plan is not limited to the above example. In addition, when creating an update plan, not only the equipment health but also the importance of the equipment may be taken into consideration.

As described above, the maintenance management device 3 of this embodiment creates an update plan that reflects the results of the deterioration diagnosis, so that it can create an appropriate update plan that matches the actual state of the equipment.

Next, the hardware configuration of the maintenance management device 3 of this embodiment will be described. In this embodiment, the maintenance management device 3 functions as the maintenance management device 3 by executing a program, which is a computer program describing the processing in the maintenance management device 3, on the computer system. FIG. 14 is a diagram showing an example of the configuration of a computer system that realizes the maintenance management device 3 of this embodiment. As shown in FIG. 14, this computer system includes a control unit 101, an input unit 102, a memory unit 103, a display unit 104, a communication unit 105, and an output unit 106, which are connected via a system bus 107.

In FIG. 14, the control unit 101 is a processor such as a CPU (Central Processing Unit), and executes a program in which the processing in the maintenance management device 3 of this embodiment is described. Note that a part of the control unit 101 may be realized by dedicated hardware such as a GPU (Graphics Processing Unit) or an FPGA (Field-Programmable Gate Array). The input unit 102 is composed of, for example, a keyboard, a mouse, etc., and is used by the user of the computer system to input various information. The storage unit 103 includes various memories such as a RAM (Random Access Memory) and a ROM (Read Only Memory) and a storage device such as a hard disk, and stores the program to be executed by the control unit 101, necessary data obtained in the process of processing, etc. The storage unit 103 is also used as a temporary storage area for the program. The display unit 104 is composed of a display, an LCD (Liquid Crystal Display Panel), etc., and displays various screens to the user of the computer system. The communication unit 105 is a receiver and a transmitter that perform communication processing. The output unit 106 is a printer, a speaker, etc. Note that FIG. 14 is just an example, and the configuration of the computer system is not limited to the example in FIG. 14.

Here, an example of the operation of the computer system until the program of this embodiment is in a state where it can be executed will be described. In the computer system having the above-mentioned configuration, for example, a computer program is installed in the storage unit 103 from a CD-ROM or DVD-ROM set in a CD (Compact Disc)-ROM drive or DVD (Digital Versatile Disc)-ROM drive (not shown). Then, when the program is executed, the program read from the storage unit 103 is stored in the main memory area of the storage unit 103. In this state, the control unit 101 executes the processing as the security management device 3 of this embodiment according to the program stored in the storage unit 103.

In the above description, a program describing the processing in the security management device 3 is provided on a CD-ROM or DVD-ROM as a recording medium. However, this is not limiting, and depending on the configuration of the computer system and the capacity of the program provided, for example, a program provided via a transmission medium such as the Internet via the communication unit 105 may be used.

The computer program of this embodiment causes a computer system to execute, for example, the steps of creating an inspection work flow for a plant using a deterioration level determined from the results of a deterioration diagnosis using status information indicating the status of equipment in the plant, and outputting the inspection work flow.

The analysis unit 35 and the determination unit 36 shown in FIG. 3 are realized by the control unit 101 shown in FIG. 14 executing a computer program stored in the storage unit 103 shown in FIG. 14. The storage unit 103 shown in FIG. 14 is also used to realize the analysis unit 35 and the determination unit 36 shown in FIG. 3. The sensor information acquisition unit 31, the diagnosis result information acquisition unit 32, the read information acquisition unit 33, and the information transmission unit 34 shown in FIG. 3 are realized by the communication unit 105 shown in FIG. 14. Furthermore, the maintenance management device 3 may be realized by multiple computer systems. For example, the maintenance management device 3 may be realized by a cloud computer system.

Also, as shown in FIG. 3, when the maintenance management device 3 is provided within the monitoring system 1, the monitoring system 1 is the computer system illustrated in FIG. 3, and the display unit 2 illustrated in FIG. 3 is realized by the display unit 104 illustrated in FIG. 14.

The terminal 4, the transformer diagnostic device 56, the circuit breaker diagnostic device 57, the circuit diagnostic device 62, and the equipment diagnostic device 63 are also realized, for example, by a computer system having the configuration shown in FIG. 14. Each diagnostic device may also be realized by multiple computer systems. For example, some of the diagnostic devices may be realized by a cloud computer system. The database device 6 may also be realized, for example, by a computer system having the configuration shown in FIG. 14. Alternatively, the database device 6 may be a storage device accessible from the maintenance management device 3, such as a hard disk device.

As described above, the maintenance management device 3 of this embodiment performs a deterioration diagnosis to estimate the degree of deterioration for each deterioration diagnosis item based on sensor information, which is status data indicating the status of each piece of equipment in the plant, and creates an inspection work flow based on the results of the deterioration diagnosis and the information stored in the database device 6. As a result, the maintenance management device 3 of this embodiment can make the inspection work more efficient.

The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or the embodiments may be combined with each other. In addition, parts of the configurations may be omitted or modified without departing from the spirit of the invention.

1 Monitoring system, 2, 46 Display unit, 3 Maintenance management device, 4 Terminal, 5 Gauge reader, 6 Database device, 7 Memory unit, 10 Maintenance management system, 31 Sensor information acquisition unit, 32 Diagnostic result information acquisition unit, 33, 44 Read information acquisition unit, 34, 45 Information transmission unit, 35 Analysis unit, 36 Judgment unit, 41 Input reception unit, 42 Information acquisition unit, 43 Inspection work flow acquisition unit, 50 Substation equipment controller, 51 Transformer, 52 Distribution board, 53 Circuit breaker, 54, 55, 68, 69, 78, 79, 80 Gauge, 56 Transformer diagnostic device, 57 Circuit breaker diagnostic device, 60 Machinery equipment controller, 61 Distribution board, 62 Circuit diagnostic device, 63 Equipment diagnostic device, 64 Equipment, 65 Motor, 66 Pump, 67 Blower, 70 Water treatment equipment controller, 71 Primary sedimentation tank, 72, 75, 77 Sensor, 73 Biological reaction tank, 74 Filtration membrane, 76 Final sedimentation tank, 351, 563, 573, 623, 633 Deterioration diagnosis analysis unit, 352 Deterioration degree calculation unit, 353 Equipment health calculation unit, 361 Inspection work flow creation unit, 362 Sensor failure determination unit, 363 Update plan creation unit, 501, 561, 571, 621, 631 Communication unit, 502 Image analysis unit, 503 Image acquisition unit, 562, 572, 622, 632 Sensor unit.

Claims (21)

an inspection work flow creation unit that creates an inspection work flow in which the inspection is simplified or omitted when the deterioration of the equipment constituting the facility is not advanced as compared with the deterioration degree at the time of the previous inspection of the plant, using the deterioration degree determined from the diagnosis result of the deterioration diagnosis using the status information indicating the status of the facility in the plant at the timing of the inspection work;
An output unit that outputs the inspection work flow;
A maintenance management device comprising: The maintenance management device according to claim 1, characterized in that the inspection work flow creation unit outputs the inspection work flow for performing an inspection regardless of the degree of deterioration this time when a predetermined number of consecutive inspections have been omitted in the previous or previous inspections. The maintenance management device according to claim 1 or 2, characterized in that the inspection work flow creation unit creates the inspection work flow that circulates for each inspection work content corresponding to the deterioration level. The plant is divided into a plurality of areas;
The maintenance management device described in claim 3, characterized in that the inspection work flow creation unit creates an inspection work flow so that inspection work is performed on the equipment in one area in order of the degree of deterioration, and inspection work is performed on the next area after inspection work on the equipment in the area is completed . The maintenance management device according to any one of claims 1 to 4, characterized in that the output unit outputs the inspection work flow by transmitting the inspection work flow to a terminal that can be carried by an inspection worker. The maintenance management device according to claim 5, characterized in that the output unit further transmits the status information and the diagnosis result to the terminal. The maintenance management device according to any one of claims 1 to 6, characterized in that the inspection work flow creation unit determines the work content in the inspection work flow when the deterioration level exceeds a threshold value, so that the inspection work content takes more time than the inspection work content when the deterioration level is equal to or less than the threshold value. The maintenance management device according to claim 7, characterized in that the inspection work flow creation unit creates the inspection work flow indicating that inspection will not be performed in the plant if the deterioration level is equal to or lower than the threshold value. Calculating an equipment health degree, which is a health degree of the equipment, using the deterioration degree;
The maintenance management device according to any one of claims 1 to 8, characterized in that the inspection work flow creation unit determines an inspection order for the equipment using the equipment healthiness, and creates the inspection work flow that reflects the determined order. The maintenance management device according to claim 9, characterized in that the inspection work flow creation unit calculates a priority for each piece of equipment by multiplying the healthiness of the equipment by the importance of the equipment, and determines the order of inspection of the equipment so that inspection of the equipment is performed in order of highest priority . The maintenance management device according to any one of claims 1 to 10, characterized in that the inspection work flow creation unit recreates the inspection work flow using inspection results obtained during an inspection based on the inspection work flow. The maintenance management device according to claim 11, characterized in that the inspection result is gauge reading information indicating the indicated value of the gauge that detects the state of the equipment, read based on an image of the gauge. The maintenance management device according to claim 12, characterized in that it determines whether or not the meter or instrumentation device is faulty using the meter reading information and the status information transmitted from the meter corresponding to the meter reading information. An update plan creation unit that creates an update plan using an equipment health degree that is the health degree of an equipment constituting the facility;
The maintenance management device according to any one of claims 1 to 13, further comprising: The maintenance management device according to any one of claims 1 to 14, characterized in that the plant is a water treatment plant including water treatment equipment. The maintenance management device according to claim 15, characterized in that the status information includes at least one detection result of the transmembrane pressure difference of the filtration membrane, the filtration flow rate, and the water temperature in the water treatment facility. a degradation diagnosis analysis unit that performs degradation diagnosis using the state information;
17. The maintenance management device according to claim 1, further comprising: A terminal that can be carried by an inspection worker;
A security management device;
Equipped with
The maintenance management device includes:
an inspection work flow creation unit that creates an inspection work flow in which the inspection is simplified or omitted when the deterioration of the equipment constituting the facility is not advanced as compared with the deterioration degree at the time of the previous inspection of the plant, using the deterioration degree determined from the diagnosis result of the deterioration diagnosis using the status information indicating the status of the facility in the plant at the timing of the inspection work;
An information transmission unit that transmits the inspection work flow to the terminal;
A maintenance management system comprising: a diagnosis device that performs the deterioration diagnosis using the state information and transmits the diagnosis result of the deterioration diagnosis to the maintenance management device;
The maintenance management system according to claim 18, further comprising: A maintenance management method for a maintenance management device, comprising:
creating an inspection work flow in which the inspection is simplified or omitted when the deterioration of the equipment constituting the facility is not advanced as compared with the deterioration degree at the time of the previous inspection in the plant, using the deterioration degree determined from the diagnosis result of the deterioration diagnosis using the status information indicating the status of the equipment in the plant at the timing of the inspection work;
outputting the inspection work flow;
A maintenance management method comprising: In the computer system,
creating an inspection work flow in which the inspection is simplified or omitted when the deterioration of the equipment constituting the facility is not advanced as compared with the deterioration degree at the time of the previous inspection in the plant, using the deterioration degree determined from the diagnosis result of the deterioration diagnosis using the status information indicating the status of the equipment in the plant at the timing of the inspection work;
outputting the inspection work flow;
A computer program characterized by:

Images