Machinery equipment diagnosis system, management device, and machine equipment diagnosis method

Abstract

To diagnose mechanical equipment regardless of an installation status or operating status.SOLUTION: A mechanical equipment diagnosis system having diagnosis devices for diagnosing multiple pieces of mechanical equipment, installed in one or more facilities, to be diagnosed on the basis of measurement values of physical quantities during operation of each of the multiple pieces of mechanical equipment includes: an input device into which measurement data including measurement values of physical quantities during operation of each of the multiple pieces of mechanical equipment is input; a storage device for storing measurement data inputted by the input device; and a control device that calculates representative reference values for diagnosis of physical quantities of each of the multiple pieces of mechanical equipment having the same classification and stores the values in the storage device based on the multiple measurement values included in multiple pieces of the measurement data stored in the storage device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technique for diagnosing mechanical equipment installed in a facility. [Background technology]

[0002] For example, a water treatment facility is equipped with multiple pieces of machinery and equipment, including rotating equipment such as pumps, agitators, dehydrators, and motors. If any of these rotating equipment breaks down, water treatment will stop, and depending on the severity of the breakdown, recovery may take a long time. To avoid unexpected breakdowns in machinery and equipment and to keep the water treatment facility operating stably, it is necessary to periodically diagnose the machinery and equipment.

[0003] When diagnosing machinery and equipment, there is an absolute evaluation method in which the presence or absence of an abnormality in the machinery and equipment is determined based on the results of comparing the measured values ​​of physical quantities such as vibration and output of the machinery and equipment during operation using a sensor or the like with a predetermined threshold value, but it is difficult to set the threshold value appropriately. Therefore, as disclosed in Patent Document 1, for example, a relative evaluation method is generally adopted in which a reference value is determined or updated based on multiple measured values ​​of the physical quantities measured multiple times during operation of the machinery and equipment, and the presence or absence of an abnormality in the machinery and equipment is determined based on the results of comparing the measured values ​​of the physical quantities measured thereafter with the reference value. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-56670 Summary of the Invention [Problem to be solved by the invention]

[0005] For example, in the case of machinery and equipment that has been in operation for many years but has never had physical quantities measured or diagnosed, or machinery and equipment that is operated extremely infrequently, the number of measurement data points for physical quantities is small, so no reference values ​​can be set and it may not be possible to diagnose whether or not there is an abnormality.

[0006] In view of the above problems, an object of the present invention is to diagnose mechanical equipment regardless of its installation status or operating status. [Means for solving the problem]

[0007] The technical means of the present invention for solving the above technical problems is characterized by the following points.

[0008] The machine equipment diagnostic system according to one aspect of the present invention performs diagnostics based on measurements of physical quantities during operation of each of a plurality of machines and equipment installed in one or more facilities. , any one of the plurality of machines and equipment Diagnosis target Machine A machine equipment diagnostic system having a diagnostic device that diagnoses machine equipment, The aforementioned multiple Machine Machinery and equipment The aforementioned Measurement values each include Multiple an input device for inputting measurement data; Multiple a storage device for storing measurement data; The aforementioned multiple plan Measurement data each Included multiple plan Based on the measured values, the plurality of machines and equipment having the same classification are Several similar machinery and equipment A representative reference value for the diagnosis of the physical quantity Calculate a control device that outputs the data and stores it in the storage device; The control device calculates specific reference values ​​of the physical quantities specific to each of the plurality of pieces of mechanical equipment based on the plurality of measurement values ​​and stores the calculated values ​​in the storage device, and calculates the representative reference value based on a plurality of similar specific reference values, which are the specific reference values ​​corresponding to the plurality of similar pieces of mechanical equipment, among the plurality of specific reference values ​​stored in the storage device. do.

[0009] Furthermore, the management device according to one aspect of the present invention is configured to: each include Multiple a communication device for receiving measurement data; Multiple a storage device for storing measurement data; The aforementioned multiple plan Measurement data each Included multiple plan Based on the measured values, the plurality of machines and equipment having the same classification are Several similar machinery and equipment and calculating the representative reference values ​​for diagnosis of the physical quantities of the respective and a control device for , The control device calculates a unique reference value of the physical quantity unique to each of the plurality of mechanical equipment based on the plurality of measurement values ​​and stores the calculated value in the storage device, calculates the representative reference value based on a plurality of similar unique reference values, which are a plurality of unique reference values ​​corresponding to the plurality of similar mechanical equipment, among the plurality of unique reference values ​​stored in the storage device, and calculates the representative reference value based on a plurality of similar unique reference values, which are a plurality of unique reference values ​​corresponding to the plurality of similar mechanical equipment, Diagnosis target Machine machinery and equipment Classification of The representative reference value corresponding to The aforementioned Diagnosis target Machine The data is sent to a diagnostic device that diagnoses the machinery. do.

[0010] Furthermore, a method for diagnosing machinery and equipment according to one aspect of the present invention includes: each include Multiple a step of inputting measurement data by an input device; Multiple a step of storing the measurement data in a storage device; The aforementioned multiple plan Measurement data each Included multiple plan Based on the measurements, calculating a specific reference value of the physical quantity specific to each of the plurality of pieces of mechanical equipment and storing the calculated value in the storage device; and Multiple pieces of machinery and equipment of the same classification Based on a plurality of similar inherent reference values, which are a plurality of inherent reference values ​​respectively corresponding to a plurality of similar machinery and equipment, the representative reference value for diagnosing the physical quantity of Calculate and storing the diagnostic information in the storage device; Among the plurality of machines and equipment, A diagnostic target input by the input device Machine Measurement of the above physical quantities of machinery and equipment value and the value stored in the storage device The aforementioned Diagnosis target Machine and the representative reference value of the physical quantity corresponding to the classification of the machinery and equipment. The aforementioned Diagnosis target Machine and diagnosing the machinery and equipment.

[0012] Book In one aspect of the invention, the control device the plurality of similar Among the specific standard values, Multiple kin A plurality of measurement data based on which the inherent reference values ​​are calculated are used to calculate a plurality of physical quantities having the same rated level at the time of measurement. similar The representative reference value may be calculated based on the unique reference value.

[0013] In one aspect of the present invention, the control device the plurality of similar Among the specific standard values, Multiple kin A plurality of measurement data based on which the specific reference values ​​are calculated are used, each of which indicates the same load level. similar The representative reference value may be calculated based on the unique reference value.

[0014] In another aspect of the present invention, The storage device stores a plurality of representative reference values ​​previously calculated by the control device. , the control device When a new representative reference value of the plurality of similar mechanical equipment including the mechanical equipment corresponding to the unique reference value is calculated due to the unique reference value being stored in the storage device, the new representative reference value of the plurality of similar mechanical equipment including the mechanical equipment corresponding to the unique reference value is calculated. The representative reference value 、 stored in the storage device The aforementioned Multiple representative reference values A plurality of representative reference values ​​calculated in the past for the plurality of similar machinery and equipment Determine whether it is an outlier or not, If the new representative reference value is not an outlier, storing the new representative reference value in the storage device as a valid representative reference value for the diagnosis, and leaving the past representative reference values ​​stored in the storage device as invalid representative reference values; The aforementioned new If the representative reference value is an outlier, The new representative reference value is not stored in the storage device. That's fine.

[0015] In one aspect of the present invention, the control device The new Representative reference value and The past multiple in the era Clustering is performed with the table reference values ​​to group them into multiple clusters, The new If the representative reference value belongs to any one of the plurality of clusters, The new It is determined that the representative reference value is not an outlier, The new If the representative reference value does not belong to any of the plurality of clusters, The new The representative reference value may be determined to be an outlier.

[0016] In one aspect of the present invention, when the number of the measurement data of any of the mechanical equipment stored in the storage device reaches a predetermined number, the control device plan Multiple data included in each measurement plan Calculate a value that indicates the variability of the measured values. ,before The value indicating the variation the plurality of measurement values ​​corresponding to the value; Based on The multiple measured values The corresponding machinery and equipment The aforementioned A unique reference value may be calculated.

[0017] In another aspect of the present invention, the storage device stores a plurality of the inherent reference values ​​corresponding to the plurality of pieces of mechanical equipment that have been calculated in the past by the control device, The control device When a new inherent reference value of the machinery and equipment is calculated due to at least one of the following reasons: new installation, replacement, maintenance, change in the usage environment, and change in load of the machinery and equipment,The unique reference value is stored in the storage device. Among the plurality of inherent reference values, a past reference value calculated in the past for the plurality of similar machinery and equipment including the machinery and equipment corresponding to the new inherent reference value is multiple Solid Determine whether or not the value is an outlier relative to a reference value; If the new unique reference value is not an outlier, the new unique reference value is stored in the storage device as a valid unique reference value for diagnosing the corresponding machine equipment, and the previous plurality of unique reference values ​​remain stored in the storage device as invalid unique reference values; If the unique reference value is an outlier, The new unique reference value is not stored in the storage device. That's fine.

[0018] In one aspect of the present invention, the control device The new Intrinsic reference value and past multiple Solid Clustering with the reference values ​​and grouping them into multiple clusters, The new If the unique reference value belongs to any of the plurality of clusters, The new Determine that the unique reference value is not an outlier, The new If the unique reference value does not belong to any of the plurality of clusters, The new A unique reference value may be determined to be an outlier.

[0019] In one aspect of the present invention, the machine equipment diagnostic system includes a management device that can communicate with each other. and a terminal device, wherein the storage device and the control device are provided in the management device, and the input device and the diagnostic device are provided in the terminal device, and the terminal device The aforementioned Diagnosis target Machine A request signal requesting a reference value of the physical quantity of the mechanical equipment is transmitted to the management device, and the control device of the management device determines, based on the request signal received from the terminal device, a reference value of the physical quantity of the mechanical equipment from the information stored in the storage device. The aforementioned Diagnosis target Machine Retrieving the inherent reference value of the machine; The aforementioned Diagnosis target Machine If the inherent reference value of the machine equipment is stored in the storage device, the inherent reference value is transmitted to the terminal device; The aforementioned Diagnosis target Machine If the inherent reference value of the machine equipment is not stored in the storage device, The aforementioned Diagnosis target Machine The representative reference value corresponding to the classification of the machine equipment is transmitted to the terminal device, and the diagnostic device of the terminal device receives the representative reference value input by the input device. The aforementioned Diagnosis target MachineThe measured value of the physical quantity of the machine equipment and the The aforementioned Diagnosis target Machine Calculate the deviation of the specific reference value or the representative reference value of the machine equipment, and based on the deviation, The aforementioned Diagnosis target Machine It may also be possible to diagnose whether there are any abnormalities in the machinery and equipment. [Effects of the Invention]

[0020] According to the present invention, it is possible to diagnose mechanical equipment regardless of its installation status or operating status. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a schematic configuration diagram of a machine equipment diagnosis system. [Figure 2] FIG. 2 is a configuration diagram of a worker terminal device. [Figure 3] FIG. 2 is a diagram illustrating the configuration of a manager terminal device. [Figure 4] FIG. 2 is a configuration diagram of a management device. [Figure 5] FIG. 10 is a diagram illustrating a part of the operation of the machine equipment diagnosis system when setting a reference value. [Figure 6] 10 is a flowchart illustrating an operation of the management device when setting a unique reference value. [Figure 7] 10 is a graph illustrating an example of clustering of unique reference values. [Figure 8A] 10 is a flowchart showing an operation of the management device when setting a representative reference value. [Figure 8B] 8B is a flowchart continuing from FIG. 8A. [Figure 9] 10 is a graph showing an example of clustering of representative reference values. [Figure 10] FIG. 10 is a diagram illustrating an example of a reference value management table. [Figure 11] FIG. 10 is a diagram illustrating a part of the operation of the machine equipment diagnosis system during diagnosis. [Figure 12] 10 is a flowchart showing the operation of the operator terminal device and the management device when diagnosing mechanical equipment. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0023] 1 is a schematic configuration diagram of a mechanical equipment diagnostic system 100. The mechanical equipment diagnostic system 100 is a system for diagnosing each of a plurality of pieces of mechanical equipment 51 installed in one or more water treatment facilities 50. In this example, the mechanical equipment diagnostic system 100 diagnoses each of a plurality of pieces of mechanical equipment 51 installed in a plurality of water treatment facilities 50.

[0024] Examples of the water treatment facility 50 include a water purification plant, a water treatment facility, a sewage treatment facility, a wastewater treatment plant, and a sludge treatment facility. The mechanical equipment 51 includes rotating equipment having a rotating body, such as a pump, an agitator, a dehydrator, a blower, and a motor. The water treatment facility 50 and the mechanical equipment 51 are not limited to those exemplified above. Furthermore, the number of water treatment facilities 50 and the mechanical equipment 51 installed is not limited to the example shown in FIG. 1 .

[0025] The measuring device 52 is composed of a sensor 53 or an operation panel 54. When the mechanical equipment 51 is operating (in operation) according to predetermined measurement conditions, the measuring device 52 measures the physical quantity generated in the mechanical equipment 51 using the sensor 53 at any time or at predetermined timing. The operation panel 54 is equipped with a computing unit (CPU and memory, not shown) that processes the output signal of the sensor 53.

[0026] The measurement conditions include measuring the physical quantity of the measurement target generated in the mechanical equipment 51 while the mechanical equipment 51 is operating so that at least one physical quantity of, for example, output, torque, current, voltage, rotation speed, load, and pressure acts at a value specified by the rating or specification data, etc. The measurement conditions may also include the type of sensor 53 that measures the physical quantity of the measurement target, the measurement period, etc.

[0027] Physical quantities to be measured by the mechanical equipment 51 include, for example, vibration (acceleration, velocity, displacement), pressure, current, voltage, and temperature. The measurement data includes a measurement value of at least one of these physical quantities to be measured. In addition, in order to measure these physical quantities to be measured, the sensor 53 provided in the measuring device 52 is configured with at least one of a vibration sensor, an acceleration sensor, a pressure sensor, an ammeter, a voltmeter, and a temperature sensor.

[0028] In the example shown in Figure 1, a measuring device 52 is provided for each piece of machinery and equipment 51, but this configuration is not limited to this. For example, a worker may go to the installation location of each piece of machinery and equipment 51 and measure the physical quantities of the machinery and equipment 51 during operation using the measuring device he or she carries.

[0029] The machine equipment diagnosis system 100 includes an operator terminal device 1, a management device 2, and an administrator terminal device 3. The operator terminal device 1 is configured as a portable tablet device, smartphone, computer, or the like, and is carried and used by an operator. As another example, the operator terminal device 1 may be configured as a stationary computer, or the like. The management device 2 is configured as, for example, a server or computer provided in a management center or on the cloud. The operator terminal device 1 and the management device 2 communicate with each other via the Internet, or the like.

[0030] The manager terminal device 3 is a terminal device used by the manager of the mechanical equipment diagnostic system 100, and is configured from a stationary or portable computer or the like. The manager terminal device 3 and the management device 2 communicate with each other via the Internet or the like. The number of worker terminal devices 1, management devices 2, and manager terminal devices 3 is not limited to the example shown in FIG. 1. Furthermore, a plurality of worker terminal devices 1 may be provided, and one of the worker terminal devices 1 used by the manager may also be used as the manager terminal device 3.

[0031] FIG. 2 is a configuration diagram of the worker terminal device 1. The worker terminal device 1 includes a control device 11, a storage device 12, a communication device 13, and a user interface 14. The control device 11 is composed of a CPU, a volatile memory, a nonvolatile memory, etc. The storage device 12 is composed of a nonvolatile memory with a larger capacity than the memory (hereinafter sometimes referred to as "internal memory") provided in the control device 11. The communication device 13 is composed of an antenna, an IC, an electric circuit, etc. for communicating with the management device 2 and the measurement device 52, respectively. The user interface 14 includes an input device 15 and an output device 16. The input device 15 is composed of a touch panel, hardware switches, a microphone, etc. The output device 16 is composed of, for example, a liquid crystal display (display device) and a speaker, etc.

[0032] 3 is a configuration diagram of the manager terminal device 3. Like the worker terminal device 1, the manager terminal device 3 includes a control device 31, a storage device 32, a communication device 33, and a user interface 34. The user interface 34 includes an input device 35 and an output device 36. The configuration of each of these components is the same as the configuration of the corresponding components of the worker terminal device 1 (detailed explanations will be omitted).

[0033] 4 is a configuration diagram of the management device 2. The management device 2 includes a control device 21, a storage device 22, and a communication device 23. The control device 21 includes a CPU, a volatile memory, a nonvolatile memory, etc. The storage device 22 includes a nonvolatile memory with a larger capacity than the memory included in the control device 21 and the memory of the storage device 12 of the worker terminal device 1. The communication device 23 includes an antenna, an IC, an electric circuit, etc. for communicating with the worker terminal device 1 and the manager terminal device 3, respectively. The management device 2 may include a user interface, similar to the worker terminal device 1, etc.

[0034] Measurement data including measurement values ​​of physical quantities during operation of the mechanical equipment 51 measured by a measuring device 52 (FIG. 1) or the like is input to the worker terminal device 1 at any time or at a predetermined timing. Specifically, for example, a worker visually confirms the measurement values ​​of physical quantities during operation of the mechanical equipment 51 output from the measuring device 52 by displaying them on the display of the output device 16, and inputs the measurement data including the measurement values ​​into the worker terminal device 1 using the input device 15.

[0035] Alternatively, after the worker electrically connects the worker terminal device 1 and the measuring device 52 wirelessly or with a wire, the worker performs a predetermined operation on the input device 15, causing the control device 11 to communicate with the measuring device 52 via the communication device 13, and input (receive) measurement data including measurement values ​​of physical quantities during operation of the corresponding mechanical equipment 51 to the worker terminal device 1. In other words, not only the input device 15 but also the communication device 13 is an input device capable of inputting measurement data.

[0036] The number of types of physical quantities included in one measurement data may be one or more, and the number of measurement values ​​of any type of physical quantity included in one measurement data may be one or more.

[0037] The control device 11 of the worker terminal device 1 communicates with the measurement device 52 to input the measurement conditions for the measured values ​​of physical quantities of the mechanical equipment 51 during operation, as well as equipment information indicating the mechanical equipment 51 to be measured, to the worker terminal device 1. The equipment information includes at least the identification information, specifications, and usage status (purpose, installation location, load state) of the mechanical equipment 51 to be measured. The measurement data, measurement conditions, and equipment information input to the worker terminal device 1 are associated with each other by the control device 11 and stored in the storage device 12.

[0038] The control device 11 of the worker terminal device 1 transmits input measurement data of physical quantities of the mechanical equipment 51 (including corresponding measurement conditions and equipment information) to the management device 2 via the communication device 13 as needed or at a predetermined timing. The control device 21 of the management device 2 stores (memorizes) the measurement data received from the worker terminal device 1 via the communication device 23 in a database 22b constructed in the storage device 22 as needed or at a predetermined timing. Furthermore, based on the plurality of measurement values ​​contained in the plurality of measurement data stored in the database 22b of the storage device 22, the control device 21 calculates specific reference values ​​of physical quantities specific to each of the plurality of mechanical equipment 51 and representative reference values ​​of physical quantities common to the plurality of mechanical equipment 51 of the same classification, and stores them in the storage device 22.

[0039] When an operator specifies (inputs) one of the machines and equipment 51 to be diagnosed using the input device 15 of the operator terminal device 1, the control device 11 communicates with the measuring device 52 using the communication device 13 to receive (acquire) from the management device 2 the specific reference value of the physical quantity corresponding to the machine and equipment 51 to be diagnosed or the representative reference value of the physical quantity corresponding to the classification of the machine and equipment 51 to be diagnosed. The control device 11 then diagnoses whether or not there is an abnormality in the machine and equipment 51 to be diagnosed based on the measured value of the physical quantity of the machine and equipment 51 to be diagnosed input using the input device 15 or the communication device 13 and the specific reference value or the representative reference value corresponding to the measured value. The control device 11 of the operator terminal device 1 constitutes a diagnostic device.

[0040] Fig. 5 is a diagram showing the reference value setting operation of the mechanical equipment diagnosis system 100. Fig. 6 is a flowchart showing the operation of the management device 2 when setting a unique reference value. Each step in Fig. 6 is executed by the control device 21 based on a software program stored in advance. (The same applies to each step in the flowcharts shown in Figs. 8A and 8B described below.) Furthermore, the reference value setting operation in Fig. 5 and the operation of the management device 2 when setting a unique reference value in Fig. 6 are executed in response to at least one of the following events: new installation, replacement, maintenance, a change in the usage environment, and a change in load of the mechanical equipment 51.

[0041] When any of the mechanical equipment 51 installed in the water treatment facility 50 is operating in accordance with the measurement conditions, measurement data including measurement values ​​of the physical quantities of the mechanical equipment 51 measured by the measuring device 52 is input to the worker terminal device 1 via the input device 15 or the communication device 13 (S1a in FIG. 5). At this time, the measurement conditions and equipment information of the mechanical equipment 51 corresponding to the measurement data may also be input to the worker terminal device 1. Alternatively, the measurement conditions and equipment information of the mechanical equipment 51 may be input to the worker terminal device 1 before the measurement data is input.

[0042] The control device 11 of the worker terminal device 1 transmits the input measurement data to the management device 2 via the communication device 13 as needed or at a predetermined timing (S1b). At this time, the measurement conditions and equipment information of the mechanical equipment 51 corresponding to the measurement data may also be transmitted to the management device 2 by the control device 11 or the like. Alternatively, the measurement conditions and equipment information of the mechanical equipment 51 may be transmitted to the management device 2 by the control device 11 or the like before the measurement data is transmitted to the management device 2.

[0043] When the control device 21 of the management device 2 receives the measurement data transmitted from the worker terminal device 1 via the communication device 23 (S1c in FIG. 6), it stores (stores) the measurement data in the database 22b of the storage device 22 (S2). Next, the control device 21 checks the number of specific measurement data indicating the same physical quantities of the mechanical equipment 51 as the received measurement data stored in the database 22b (S3). The specific measurement data in this case refers to measurement data including measurement values ​​of the physical quantities of the specific mechanical equipment 51 indicated by the equipment information or measurement conditions included in the received measurement data, and also includes the measurement data itself received in step S1.

[0044] For example, the control device 21 may search the database 22b and count the number of times that specific measurement data is stored in the database 22b. Alternatively, the control device 21 may count up a counter provided in the internal memory every time specific measurement data is stored in or received from the database 22b, and refer to the count value of the counter as the number of times that specific measurement data is stored.

[0045] If the number of stored specific measurement data is less than a predetermined number equal to or greater than two (S4: NO), the control device 21 waits to receive measurement data again. In this case, the predetermined number is set to a large number of values ​​that allow statistical processing of the multiple measurement values ​​included in each of the multiple specific measurement data stored in the database 22b.

[0046] If the number of stored specific measurement data has reached a predetermined number (S4: YES), the control device 21 reads the specific measurement data from the database 22b and calculates a value indicating the variation of the specific measurement values ​​contained in the measurement data (S5). At this time, the control device 21 calculates the variance or standard deviation of the specific measurement values ​​as the value indicating the variation.

[0047] If the value indicating the variation is greater than a predetermined threshold (S6: NO), the control device 21 calculates the maximum value of the plurality of specific measurement values ​​and provisionally determines (S7) the maximum value as the inherent reference value of the physical quantity of the corresponding specific mechanical equipment 51. In another example, the control device 21 may calculate the average, median, or mode of the plurality of specific measurement values ​​and provisionally determine the calculated value plus a predetermined margin value as the inherent reference value of the physical quantity of the corresponding specific mechanical equipment 51.

[0048] On the other hand, if the value indicating the variation calculated in step S5 is equal to or less than the threshold value (S6: YES), the control device 21 calculates the average value of the multiple specific measurement values ​​and provisionally determines the average value as the intrinsic reference value of the physical quantity of the corresponding specific mechanical equipment 51 (S8). As another example, the control device 21 may calculate any one of the average value, median value, and mode value of the multiple specific measurement values ​​and provisionally determine the calculated value plus a predetermined margin value as the intrinsic reference value of the corresponding physical quantity of the specific mechanical equipment 51. However, the control device 21 calculates the intrinsic reference value in step S8 using a calculation method different from the calculation formula for the intrinsic reference value in step S7.

[0049] Next, the control device 21 determines whether the unique reference value tentatively determined (calculated) in step S7 or step S8 is an outlier among the multiple unique reference values ​​stored in the storage device 22 (S9). At this time, for example, the control device 21 clusters the tentatively determined unique reference value and the multiple unique reference values ​​stored in the storage device 22.

[0050] The plurality of unique reference values ​​stored in the storage device 22 refer to the plurality of unique reference values ​​previously determined by the control device 21 and stored in the storage device 22. In this example, the control device 21 extracts, as data for clustering, from the storage device 22, the currently valid unique reference values ​​of the plurality of pieces of mechanical equipment 51 that are in the same classification as the mechanical equipment 51 corresponding to the unique reference value provisionally determined in steps S7 and S8, and the unique reference values ​​that were valid in the past for the plurality of pieces of mechanical equipment 51. The classification of the mechanical equipment 51 is set in advance.

[0051] As another example, when the number of unique reference values ​​stored in the storage device 22 for multiple pieces of mechanical equipment 51 having the same classification is less than a predetermined number, the control device 21 may extract, as data for clustering, unique reference values ​​that are currently valid for diagnosis of all pieces of mechanical equipment 51 stored in the storage device 22 and unique reference values ​​that were valid in the past, regardless of the classification of the mechanical equipment 51. Alternatively, the control device 21 may extract, as data for clustering, only the unique reference values ​​that are currently valid for all pieces of mechanical equipment 51 from the storage device 22, regardless of the classification of the mechanical equipment 51.

[0052] In addition, if the number of unique reference values ​​that were previously valid for the mechanical equipment 51 corresponding to the unique reference values ​​tentatively determined in steps S7 and S8 is greater than or equal to a predetermined number, the control device 21 may extract these past unique reference values ​​from the memory device 22 as data for clustering.

[0053] 6, the control device 21 determines, for example, a physical quantity indicated by the provisionally determined inherent reference value and the plurality of inherent reference values ​​stored in the storage device 22 as a first parameter. The control device 21 also reads measurement data of the mechanical equipment 51 corresponding to each of the inherent reference values, and determines a rating indicated by the measurement conditions corresponding to the measurement data as a second parameter. The control device 21 then performs clustering using the first parameter and the second parameter, thereby grouping the provisionally determined inherent reference value and the plurality of inherent reference values ​​stored in the storage device 22 into a plurality of clusters.

[0054] Fig. 7 is a graph showing an example of clustering of inherent reference values ​​by the control device 21. In the example of Fig. 7, the mechanical equipment 51 is a pump, and the water discharge pressure (unit: Pa (Pascal)) when the pump is operating in a stable output (power; unit: kw (kilowatt)) state is measured as a physical quantity by the measuring device 52. Then, when the inherent reference value is calculated by the control device 21 based on the measured value, the inherent reference value indicating the discharge pressure is set as the first parameter (parameter on the vertical axis), and the output is set as the second parameter (parameter on the horizontal axis). Note that the output of the second parameter may be a rated value.

[0055] As shown in Figure 7, the multiple characteristic reference values ​​(circles) are grouped into three clusters C1 to C3. Of these, the first cluster C1 contains the characteristic reference values ​​of small centrifugal pumps, the second cluster C2 contains the characteristic reference values ​​of medium-sized centrifugal pumps, and the third cluster C3 contains the characteristic reference values ​​of large centrifugal pumps. The third cluster C3, the second cluster C2, and the third cluster C3 are all pumps of the same type, and there is a positive correlation between output and discharge pressure.

[0056] If the inherent reference value provisionally determined (calculated) in step S7 or step S8 (the inherent reference value classified by axial flow pump regardless of pump size) belongs to any of the clusters C1 to C3, for example, like any of the black circles shown in Fig. 7, the control device 21 determines that the inherent reference value is not an outlier (S10: YES in Fig. 6). In this case, the control device 21 confirms the provisionally determined inherent reference value and stores it in the storage device 22 (S11).

[0057] At this time, the control device 21 stores the determined inherent reference value in the storage device 22 in association with the equipment information of the corresponding mechanical equipment 51, the measurement conditions, and a value indicating the variation in the measurement value based on which the inherent reference value was calculated. In other words, the value indicating the variation in the measurement value of the physical quantity on which the determined inherent reference value was based is also stored in the storage device 22.

[0058] Furthermore, when executing step S11, if the inherent reference value of the physical quantity of the corresponding mechanical equipment 51 has not yet been stored in the memory device 22, the control device 21 stores the inherent reference value determined this time in the memory device 22 as a valid inherent reference value for diagnosing the corresponding mechanical equipment 51 (new addition of inherent reference value).

[0059] On the other hand, if a previously determined inherent reference value of the physical quantity of the corresponding mechanical equipment 51 is stored in the storage device 22, the control device 21 invalidates the past inherent reference value for use in diagnosing the corresponding mechanical equipment 51 while leaving the past inherent reference value stored in the storage device 22. Then, the control device 21 stores the currently determined inherent reference value in the storage device 22 as a valid inherent reference value for use in diagnosing the corresponding mechanical equipment 51 (updating the inherent reference value). The control device 21 can use the invalidated past inherent reference value when performing clustering as described above.

[0060] On the other hand, if the unique reference value provisionally determined in step S7 or step S8 does not belong to any of the clusters C1 to C3, as indicated by the open circle in Fig. 7, the control device 21 determines that the unique reference value is an outlier (S10: NO in Fig. 6). In this case, the control device 21 cancels the provisionally determined unique reference value (S12), does not store it in the storage device 22, and outputs a first notification to the manager terminal device 3 indicating that the unique reference value of the corresponding mechanical equipment 51 has not been set (S13).

[0061] More specifically, in step S13, the control device 21 transmits an output command for the first notification to the manager terminal device 3. When the manager terminal device 3 receives the output command for the first notification via the communication device 33, the control device 31 outputs the first notification to the manager via the output device (such as a display or speaker) 36 based on the output command. As another example, the control device 21 of the management device 2 may transmit an output command for the first notification to the worker terminal device 1, and the output device 16 included in the worker terminal device 1 may output the first notification to the worker.

[0062] After checking the first notification, the administrator can, for example, set an alternative unique reference value in the management device 2 via the administrator terminal device 3. After checking the first notification, the worker can, for example, check whether the corresponding mechanical equipment 51 is set correctly or perform maintenance on the mechanical equipment 51.

[0063] 8A and 8B are flowcharts showing the operation of the management device 2 when setting a representative reference value. As described above, when the control device 21 adds or updates a unique reference value in S11 of FIG. 6 (S21 of FIG. 8A), it reads the equipment information associated with the unique reference value and checks the specific classification to which the mechanical equipment 51 corresponding to the unique reference value belongs (S22). The classification of the mechanical equipment 51 is set in advance by, for example, an administrator, and information indicating each classification is stored in the storage device 22 of the management device 2.

[0064] After step S21, the control device 21 reads the equipment information associated with the plurality of inherent reference values ​​stored in the storage device 22, extracts the inherent reference values ​​of the physical quantities corresponding to the plurality of pieces of mechanical equipment 51 belonging to a specific classification from the storage device 22, and sets the extracted plurality of inherent reference values ​​in a first data group (S23). At this time, the control device 21 also includes the newly added or updated inherent reference values ​​in the first data group, and stores the first data group in its internal memory.

[0065] Next, the control device 21 reads measurement conditions corresponding to a plurality of measurement data based on which the plurality of inherent reference values ​​included in the first data group were calculated, and determines the rated level at the time of measurement of the physical quantity indicated by the plurality of measurement conditions (S24). The rated level refers to each of a plurality of levels obtained by classifying the rated value of at least one of the output, torque, current, voltage, rotation speed, load, and pressure at the time of measurement of the physical quantity indicated by the measurement conditions corresponding to the measurement data. For example, the control device 21 determines whether the rated value of the output at the time of measurement is within a predetermined range, below the range, or above the range.

[0066] Then, the control device 21 extracts from the first data group a plurality of unique reference values ​​whose rated levels are the same as the newly added or updated unique reference value, and sets the extracted plurality of unique reference values ​​in the second data group (S25). At this time, the control device 21 also includes the newly added unique reference value in the second data group, and stores the second data group in its internal memory. This narrows down the number of data (the number of unique reference values) for setting a representative reference value.

[0067] Next, the control device 21 checks whether or not to take into consideration the level of load placed on the mechanical equipment 51 when it is operating. The manager inputs instruction information indicating whether or not to take into consideration the level of load placed on the mechanical equipment 51 when it is operating, when setting the representative reference value, using the input device 35 provided in the manager terminal device 3 (see FIG. 5, etc.). The load refers to the water quality at the location where the mechanical equipment 51 is installed or the current flowing through the mechanical equipment 51, etc. The control device 31 of the manager terminal device 3 transmits the instruction information inputted by the input device 35 to the management device 2 via the communication device 33.

[0068] In the management device 2, when the instruction information is received by the communication device 23, the control device 21 stores the instruction information in an internal memory. To this end, the control device 21 reads the instruction information from the manager terminal device 3 stored in the internal memory, and checks whether the instruction information indicates that the load level should be taken into consideration.

[0069] Then, when the load level is not taken into consideration (S26: NO), the control device 21 calculates the average value of the multiple inherent reference values ​​included in the second data group, and provisionally determines the average value as the representative reference value for the corresponding physical quantity of the mechanical equipment 51 belonging to a specific classification (S27). As another example, the control device 21 may calculate any one of the average value, median value, and mode value of the multiple inherent reference values ​​included in the second data group, and provisionally determine the value obtained by adding a predetermined margin value to the calculated value as the representative reference value.

[0070] In addition, when the control device 21 takes the load level into consideration (S26: YES), it reads equipment information of multiple measurement data based on which each of the multiple inherent reference values ​​included in the second data group was calculated, and determines the load level during operation of the mechanical equipment 51 indicated by the multiple equipment information (S28).

[0071] The load level refers to each of the multiple levels of load during operation of the mechanical equipment 51 indicated by the equipment information corresponding to the measurement data. For example, if the mechanical equipment 51 is a pump, the control device 21 determines whether the load is high or low depending on whether the water flowing into or out of the pump contains sludge. Also, for example, if the mechanical equipment 51 is a motor, the control device 21 determines whether the load is high or low depending on whether the most frequent value of the current flowing through the motor is equal to or greater than a predetermined value. Note that the control device 21 may classify the load level into not only two levels, high and low, but also three or more levels.

[0072] The control device 21 extracts from the second data group a plurality of unique reference values ​​whose load levels are the same as the newly added or updated unique reference value, and sets the extracted plurality of unique reference values ​​in a third data group (S29). At this time, the control device 21 also includes the newly added or updated unique reference value in the third data group, and stores the third data group in its internal memory. This further narrows down the number of data (the number of unique reference values) for setting a representative reference value.

[0073] Then, the control device 21 calculates the average value of the multiple inherent reference values ​​included in the third data group, and provisionally determines the average value as the representative reference value of the corresponding physical quantity of the mechanical equipment 51 belonging to a specific classification (S30). As another example, the control device 21 may calculate any one of the average value, median value, and mode value of the multiple inherent reference values ​​included in the third data group, and provisionally determine the value obtained by adding a predetermined margin value to the calculated value as the representative reference value.

[0074] Next, the control device 21 determines whether the representative reference value tentatively determined (calculated) in step S27 or step S30 is an outlier among the plurality of representative reference values ​​stored in the storage device 22 (S31 in FIG. 8B). At this time, for example, the control device 21 clusters the tentatively determined representative reference value and the plurality of representative reference values ​​stored in the storage device 22.

[0075] The plurality of representative reference values ​​stored in the storage device 22 refer to a plurality of representative reference values ​​previously determined by the control device 21 and stored in the storage device 22. In this example, the control device 21 extracts, as data for clustering, from the storage device 22, currently valid representative reference values ​​and representative reference values ​​that were valid in the past and that belong to the same classification as the classification corresponding to the representative reference value provisionally determined in steps S27 and S30 of Fig. 8A. Also, at this time, the control device 21 may narrow down the representative reference values ​​to be set in the data for clustering by at least one of the corresponding rated level and load level.

[0076] As another example, if the number of representative reference values ​​stored in the storage device 22 of the same classification is less than a predetermined number, the control device 21 may extract, as data for clustering, all representative reference values ​​currently valid for diagnosis and representative reference values ​​that were valid in the past stored in the storage device 22, regardless of the classification of the mechanical equipment 51. Alternatively, the control device 21 may extract only all currently valid representative reference values ​​from the storage device 22 as data for clustering.

[0077] In addition, if the number of representative reference values ​​that were valid in the past for the classification corresponding to the representative reference value tentatively determined in steps S27 and S30 is equal to or greater than a predetermined number, the control device 21 may extract the past representative reference values ​​from the storage device 22 as data for clustering.

[0078] It is to be noted that the representative reference value is unlikely to be an outlier because it is provisionally determined (calculated) based on the multiple unique reference values ​​stored in the storage device 22 after it has been determined that the representative reference value is not an outlier. However, depending on the calculation method of the representative reference value, the appropriateness of the multiple unique reference values ​​based on which the representative reference value was calculated, the extraction method and number of the unique reference values ​​extracted, and the classification method of the mechanical equipment 51, the representative reference value may not be provisionally determined appropriately and may become an outlier.

[0079] After steps S27 and S30, the control device 21 determines, for example, a physical quantity indicated by the provisionally determined representative reference value and the plurality of representative reference values ​​stored in the storage device 22 as a first parameter. The control device 21 also reads measurement data of the mechanical equipment 51 corresponding to each of the representative reference values, and determines, as a second parameter, a value of the physical quantity indicated by the measurement conditions corresponding to the measurement data (which may be a rated value). The control device 21 then performs clustering using the first parameter and the second parameter, thereby grouping the provisionally determined representative reference value and the plurality of representative reference values ​​stored in the storage device 22 into a plurality of clusters.

[0080] FIG. 9 is a graph showing an example of clustering of representative reference values ​​by the control device 21. In the example of FIG. 9, the mechanical equipment 51 is classified as a small pump, and the physical quantity indicated by the representative reference value is the discharge pressure of water when the small pump is operating in a stable output state. Then, the discharge pressure is set as the first parameter, and the output is set as the second parameter. Note that the output of the second parameter may be a rated value.

[0081] 9, the representative reference values ​​(circles) are grouped into two clusters: a fourth cluster C4 and a fifth cluster C5. The fourth cluster C4 and the fifth cluster C5 show a positive correlation between the rated output and the discharge pressure.

[0082] If the representative reference value provisionally determined (calculated) in step S27 or step S30 belongs to one of multiple clusters C4 or C5, for example, as shown by one of the black circles in FIG. 9, the control device 21 determines that the representative reference value is not an outlier (YES in S32 of FIG. 8B). In this case, the control device 21 confirms the provisionally determined representative reference value and stores it in the storage device 22 (S33). At this time, the control device 21 stores the confirmed representative reference value in the storage device 22 in association with the equipment information and measurement conditions of the mechanical equipment 51 of the corresponding classification.

[0083] Furthermore, when executing step S33, if the representative reference value of the physical quantity of the machinery and equipment 51 of the corresponding classification has not yet been stored in the memory device 22, the control device 21 stores the representative reference value determined this time in the memory device 22 as a valid representative reference value for diagnosing the machinery and equipment 51 of the corresponding classification (adding a new representative reference value).

[0084] On the other hand, if a representative reference value of a physical quantity determined in the past for the mechanical equipment 51 of the corresponding classification is stored in the storage device 22, the control device 21 invalidates the past representative reference value for use in diagnosing the mechanical equipment 51 of the corresponding classification while leaving the past representative reference value stored in the storage device 22. Then, the control device 21 stores the currently determined representative reference value in the storage device 22 as a valid representative reference value for diagnosing the mechanical equipment 51 of the corresponding classification (S33, updating the representative reference value). At this time, the control device 21 associates the classification, rated level, and load level of the mechanical equipment 51 corresponding to the representative reference value with the representative reference value and stores them in the storage device 22. The control device 21 can also use the invalidated past representative reference value when clustering.

[0085] On the other hand, if the provisionally determined representative reference value does not belong to any of the clusters C4 and C5, as shown by the circle indicated by the open dashed line in Fig. 9, the control device 21 determines that the representative reference value is an outlier (S32: NO in Fig. 8B). In this case, the control device 21 cancels the provisionally determined representative reference value (S34), does not store it in the storage device 22, and outputs a second notice to the manager terminal device 3 indicating that a representative reference value for the mechanical equipment 51 of the corresponding classification has not been set (S35).

[0086] 6 described above, in step S35, the control device 21 also transmits an output command for the second notification to the manager terminal device 3. Then, when the manager terminal device 3 receives the output command for the second notification via the communication device 33, the control device 31 outputs the second notification to the manager via the output device 36. In this case as well, as another example, the control device 21 of the management device 2 may transmit an output command for the second notification to the worker terminal device 1, and the output device 16 provided in the worker terminal device 1 may output the second notification to the worker.

[0087] After checking the second notification, the manager can set, for example, an alternative representative reference value in the management device 2 via the manager terminal device 3. From the second notification, the worker can understand the reason why the mechanical equipment 51 was not diagnosed.

[0088] 7 and 9, the control device 21 performed clustering using the discharge pressure of the pump corresponding to the specific reference value and the representative reference value as the first parameter and the rated output as the second parameter, but this is not limiting. When performing clustering, the control device 21 may determine, for example, any of other physical quantities such as vibration (acceleration, speed, displacement), pressure (water pressure), current, voltage, and temperature as the first parameter. Furthermore, the control device 21 may determine, as the second parameter, any of the rated values ​​of other physical quantities such as torque, current, voltage, rotation speed, load, and pressure, or a value (such as a recommended value) indicated in the specification data of the mechanical equipment 51.

[0089] The control device 21 may also determine the parameters to be used for clustering using principal component analysis. In this case, if many parameters are effective, they may be multiplied together to form a single parameter, thereby reducing the number of dimensions. Furthermore, the administrator may not specify the number of clusters, or may specify the number of clusters in advance. Furthermore, classification may be performed using supervised learning.

[0090] The control device 21 may also determine whether the provisionally determined specific reference value or representative reference value is an outlier using other methods, such as the mean and standard deviation, a histogram, a boxplot (interquartile range), or the Smirnoff-Grubbs test. The control device 21 may also omit at least one of the outlier determination of the specific reference value (steps S12 and S13 associated with steps S9 and S10 in FIG. 6) and the outlier determination of the representative reference value (steps S34 and S35 associated with steps S31 and S32 in FIG. 8B).

[0091] In the above-described embodiment, the control device 21 calculates a unique reference value unique to each of the multiple pieces of machinery and equipment 51 based on a plurality of measurement values ​​of the physical quantities of each piece of machinery and equipment 51, and calculates a representative reference value of the physical quantities of the machinery and equipment 51 belonging to the same classification based on the unique reference values ​​of the multiple pieces of machinery and equipment 51. In other words, since the original data for calculating the unique reference value and the representative reference value are the measurement values ​​of the corresponding physical quantities, the control device 21 calculates the unique reference value of each piece of machinery and equipment 51 and the representative reference value of the multiple pieces of machinery and equipment 51 belonging to the same classification based on a plurality of measurement values ​​of the physical quantities of each piece of machinery and equipment 51. However, the control device 21 may calculate the representative reference value of the physical quantities of the machinery and equipment 51 belonging to the same classification based on the plurality of measurement values ​​of the physical quantities of the multiple pieces of machinery and equipment 51 themselves, rather than the unique reference values ​​of the multiple pieces of machinery and equipment 51 belonging to the same classification.

[0092] Furthermore, when calculating the inherent reference value, the control device 21 may omit steps (S5, S6, etc. in FIG. 6) that take into account the variation in the corresponding plurality of measurement values, and may calculate the average value of the plurality of measurement values, etc., as the inherent reference value. Furthermore, when determining the inherent reference value or the representative reference value, the control device 21 may omit steps (S9, S10 in FIG. 6, S31, S32 in FIG. 8B, etc.) that determine an outlier if a value indicating the variation in the underlying data (measurement values ​​of physical quantities or inherent reference values) is less than a predetermined value.

[0093] Furthermore, when calculating the representative reference value, the control device 21 may change the order of performing the steps of narrowing down the number of data at the rated level (S24 and S25 in FIG. 8A) and the steps of narrowing down the number of data at the load level (S26, S28, S29, etc.). Furthermore, the control device 21 may omit the step of narrowing down the number of data at the rated level or load level, and calculate, as the representative reference value, an average value of multiple inherent reference values ​​of the mechanical equipment 51 of the corresponding classification.

[0094] As described above, the administrator can check the unique reference value and representative reference value set in the management device 2 using the administrator terminal device 3. Specifically, after checking the first or second notification output by the output device 36 of the administrator terminal device 3, for example, the administrator performs a predetermined checking operation on the user interface 34 to check the setting status of the unique reference value and representative reference value. Then, the control device 31 of the administrator terminal device 3 transmits a setting data request signal to the management device 2 via the communication device 33, requesting data indicating the setting status of the unique reference value and representative reference value.

[0095] In the management device 2, when the communication device 23 receives a setting data request signal from the manager terminal device 3, the control device 21 reads the unique reference values ​​and representative reference values ​​stored in the storage device 22, generates data for a reference value management table 40 shown in FIG. 10, for example, and transmits the data to the manager terminal device 3 via the communication device 23. When the data is received by the communication device 33 of the manager terminal device 3, the control device 31 outputs the reference value management table 40 from the output device 36 based on the data. At this time, the control device 31 may display the reference value management table 40 on a display included in the output device 36 so that the manager can visually check the contents of the reference value management table 40.

[0096] The reference value management table 40 is data for managing valid reference values ​​(unique reference values ​​and representative reference values) set by the management device 2 and information associated with each of the reference values, and shows these in a list format. In the example of Fig. 10, the reference value management table 40 shows the reference value of the acceleration (physical quantity) of vibrations that occur when the mechanical equipment 51 is in operation, etc.

[0097] 10, the reference value management table 40 has an item column (row) 45 indicating the reference value, an item column 41 indicating the type of reference value, an item column 43 indicating the mechanical equipment 51 corresponding to the reference value and the water treatment facility 50 in which the mechanical equipment 51 is installed, an item column 42 indicating the classification of the corresponding mechanical equipment 51, an item column 44 indicating the rated output level of the corresponding mechanical equipment 51, an item column 46 indicating the data variability based on which the reference value was calculated, and an item column 47 indicating the load level of the corresponding mechanical equipment 51. In this example, the data variability indicates the variance of multiple measured values ​​of vibration acceleration (physical quantity) in the case of an inherent reference value, and indicates the variance of multiple inherent reference values ​​in the case of a representative reference value.

[0098] The administrator refers to the reference value management table 40 output (displayed) by the output device 36 of the administrator terminal device 3, and when he finds a column 45a among the item columns 45 in which a unique reference value or a representative reference value is not set, he appropriately inputs a reference value (the representative reference value in the example of FIG. 10 ) into the column 45a using the input device 35. Then, when the administrator further performs a predetermined operation on the input device 35 to input an instruction to update the reference value management table 40, the control device 31 transmits an update command including the input value of column 45a to the management device 2 via the communication device 33.

[0099] In the management device 2, when the communication device 23 receives an update command from the manager terminal device 3, the control device 21 sets the value input by the manager to the reference value corresponding to the column 45a of the reference value management table 40 based on the update command, and stores the reference value in the storage device 22. In this way, the manager can appropriately input substitute values ​​for the unique reference value and the representative reference value that were not set in the management device 2, using the manager terminal device 3.

[0100] As described above, when the unique reference value or the representative reference value is a value input by the administrator, the control device 21 associates the unique reference value or the representative reference value with information indicating that the value is input by the administrator and stores the associated information in the storage device 22. Then, the control device 21 does not use (excludes) the unique reference value and the representative reference value that are input by the administrator in the outlier determination step (S9, S10 in FIG. 6) in the subsequent unique reference value setting operation, the first data group setting step (S23 in FIG. 8A) in the representative reference value setting operation, and the outlier determination step (S31, S32 in FIG. 8B). Therefore, when diagnosing the mechanical equipment 51, not only the unique reference value and the representative reference value set by the management device 2 but also the unique reference value and the representative reference value that are input by the administrator are used.

[0101] Fig. 11 is a diagram showing the diagnostic operation of the mechanical equipment diagnostic system. Fig. 12 is a flowchart showing the operation of the worker terminal device 1 and the management device 2 when diagnosing mechanical equipment 51. In Fig. 12, each step in the flowchart on the right side is executed by the control device 11 of the worker terminal device 1 based on a pre-stored software program, and each step in the flowchart on the left side is executed by the control device 21 of the management device 2 based on a pre-stored software program.

[0102] First, an operator designates one of the machines and equipment 51 to be diagnosed using the input device 15 of the operator terminal device 1, and inputs measurement data of the physical quantities of the machines and equipment 51 to be diagnosed from the corresponding measuring device 52 to the operator terminal device 1 via the input device 15 or the communication device 13 (S41 in FIGS. 11 and 12). Then, the control device 11 transmits a request signal requesting the reference value of the physical quantity corresponding to the machines and equipment 51 to be diagnosed to the management device 2 via the communication device 13 (S42 in FIGS. 11 and 12).

[0103] When the request signal transmitted from the worker terminal device 1 is received by the communication device 23 of the management device 2 (S43 in FIG. 12), the control device 21 searches for the reference values ​​(the unique reference value and the representative reference value) of the mechanical equipment 51 to be diagnosed from the information stored in the storage device 22 based on the request signal (S44). If the unique reference value of the mechanical equipment 51 to be diagnosed is stored in the storage device 22 (S45: YES), the control device 21 transmits the unique reference value to the worker terminal device 1 via the communication device 23 (S46 in FIGS. 12 and 11).

[0104] If the mechanical equipment 51 to be diagnosed is, for example, mechanical equipment 51a (Figure 12) that has been in operation for many years but has never had its physical quantities measured or diagnosed, or if it is mechanical equipment 51b that operates extremely infrequently, the number of measurement data for the physical quantities of the mechanical equipment 51a, 51b during operation is small, so the unique reference values ​​of the mechanical equipment 51a, 51b may not be set in the management device 2 and may not be stored in the memory device 22.

[0105] As described above, if the specific reference value of the machine equipment 51 to be diagnosed is not stored in the memory device 22 (S45: NO in Figure 12), the control device 21 reads from the memory device 22 a representative reference value of the physical quantity corresponding to the classification of the machine equipment 51 to be diagnosed, and transmits the representative reference value to the worker terminal device 1 via the communication device 23 (Figure 12, S47 in Figure 11).

[0106] As described above, when the representative reference value is associated with not only the classification of the mechanical equipment 51 but also the rated level or load level and stored in the storage device 22, the control device 21 identifies the classification of the mechanical equipment 51 to be diagnosed and the rated level or load level. Then, the control device 21 reads from the storage device 22 the representative reference value of the physical quantity corresponding to the identified classification and rated level or load level, and transmits the representative reference value to the worker terminal device 1 via the communication device 23.

[0107] When the communication device 13 of the worker terminal device 1 receives the unique reference value transmitted from the management device 2 (S48: YES in FIG. 12), the control device 11 diagnoses whether or not there is an abnormality in the mechanical equipment 51 to be diagnosed based on the input measurement values ​​of the physical quantities of the mechanical equipment 51 to be diagnosed and the received unique reference value (S50). Also, when the communication device 13 of the worker terminal device 1 receives the representative reference value transmitted from the management device 2 (S48: NO, S49: YES), the control device 11 diagnoses whether or not there is an abnormality in the mechanical equipment 51 to be diagnosed based on the input measurement values ​​of the physical quantities of the mechanical equipment 51 to be diagnosed and the received representative reference value (S50).

[0108] In step S50, the control device 11 calculates the degree of deviation between the measured value of the physical quantity of the mechanical equipment 51 to be diagnosed and the received inherent reference value or representative reference value, and diagnoses the presence or absence of an abnormality in the mechanical equipment 51 to be diagnosed based on the degree of deviation. More specifically, for example, the control device 11 calculates the degree of deviation by substituting the measured value of one of the physical quantities of the mechanical equipment 51 to be diagnosed and the inherent reference value or representative reference value corresponding to the measured value into a predetermined calculation formula. Then, if the degree of deviation is equal to or less than a predetermined threshold, the control device 11 diagnoses that there is no abnormality in the mechanical equipment 51 to be diagnosed. On the other hand, if the degree of deviation is greater than the predetermined threshold, the control device 11 diagnoses that there is an abnormality in the mechanical equipment 51 to be diagnosed.

[0109] In addition, the control device 11 may determine whether or not there is an abnormality in multiple types of physical quantities based on each of the measurement values ​​of multiple types of physical quantities of the machinery and equipment 51 to be diagnosed and the corresponding unique reference value or representative reference value, and may comprehensively diagnose whether or not there is an abnormality in the machinery and equipment 51 to be diagnosed based on the determination results of whether or not there is an abnormality in the multiple types of physical quantities.

[0110] Then, if there is no abnormality in the machine equipment 51 to be diagnosed (S51: YES), the control device 11 transmits the diagnosis result to the management device 2 via the communication device 13 (S53). When the diagnosis result of the machine equipment 51 to be diagnosed transmitted from the worker terminal device 1 is received by the communication device 23 of the management device 2 (S55), the control device 21 stores the diagnosis result in the storage device 22 (S56).

[0111] On the other hand, if an abnormality is found in the machine equipment 51 to be diagnosed (S51: NO), the control device 11 of the worker terminal device 1 outputs a third notification indicating that an abnormality is found in the machine equipment 51 to be diagnosed (S52). At this time, the control device 11 outputs the third notification to the worker via the output device (display, speaker, etc.) 16. The control device 11 also outputs the physical quantity in which the abnormality is found and the measurement value of the physical quantity to the worker via the output device 16.

[0112] Furthermore, the control device 11 transmits a diagnosis result indicating that there is an abnormality in the machine equipment 51 to be diagnosed to the management device 2 via the communication device 13 (S53). At this time, the control device 11 may include the measured values ​​of the physical quantities used when diagnosing the machine equipment 51 to be diagnosed in the diagnosis result and transmit it to the management device 2. When the diagnosis result of the machine equipment 51 to be diagnosed transmitted from the worker terminal device 1 in this way is received by the communication device 23 of the management device 2 (S55), the control device 21 stores the diagnosis result in the storage device 22 (S56).

[0113] In the above-described embodiment, an example has been shown in which the control device 21 of the management device 2 sets the inherent reference value and the representative reference value, and the control device 11 of the worker terminal device 1 diagnoses the mechanical equipment 51, but the present invention is not limited to this configuration. For example, the control device 11 of the worker terminal device 1 may set the inherent reference value and transmit it to the management device 2, and the control device 21 may store the inherent reference value in the storage device 22. Furthermore, for example, the control device 21 of the management device 2 may diagnose the mechanical equipment 51 to be diagnosed based on the measured values ​​of the physical quantities of the mechanical equipment 51 to be diagnosed received from the worker terminal device 1 and the corresponding inherent reference value or representative reference value stored in the storage device 22.

[0114] The measured value, the specific reference value, and the representative reference value of the physical quantity of the mechanical equipment 51 may each be a single numerical value, or a waveform showing the change in the physical quantity over a specified period of time, or at least one of the frequency, effective value, average value, maximum value, and minimum value of the waveform.

[0115] In the above-described embodiment, an example has been shown in which the mechanical equipment diagnostic system 100 is applied to diagnose each of the multiple pieces of mechanical equipment 51 installed in the water treatment facility 50, but the present invention is not limited to this. The present invention can also be applied to diagnose each of multiple pieces of mechanical equipment installed in one or more other facilities.

[0116] The present embodiment described above has the following configuration and provides the following effects.

[0117] The mechanical equipment diagnostic system 100 of this embodiment is a mechanical equipment diagnostic system having a diagnostic device that diagnoses the mechanical equipment to be diagnosed based on measurement values ​​of physical quantities during operation of each of multiple pieces of mechanical equipment 51 installed in one or more facilities (water treatment facilities) 50, and is equipped with input devices 15, 13 (input device 15, communication device 13) to which measurement data including measurement values ​​of physical quantities during operation of each of the multiple pieces of mechanical equipment, a memory device 22 that stores the measurement data input by the input devices 15, 13, and a control device 21 that calculates representative standard values ​​for diagnosing the physical quantities of multiple pieces of mechanical equipment 51 having the same classification based on multiple measurement values ​​included in the multiple measurement data stored in the memory device 22 and stores the representative standard values ​​in the memory device 22.

[0118] In addition, the management device 2 of this embodiment is equipped with a communication device 23 that receives measurement data including measurement values ​​of physical quantities during operation of each of multiple pieces of mechanical equipment 51 installed in one or more facilities, a memory device 22 that stores the measurement data received by the communication device 23, and a control device 21 that calculates representative standard values ​​for diagnosing the physical quantities of multiple pieces of mechanical equipment 51 of the same classification based on multiple measurement values ​​included in the multiple measurement data stored in the memory device 22, stores the representative standard values ​​in the memory device 22, and transmits the representative standard values ​​corresponding to the mechanical equipment 51 to be diagnosed via the communication device 23 to a diagnosis device 11 that diagnoses the mechanical equipment 51 to be diagnosed.

[0119] According to the above configuration, even if the mechanical equipment 51 to be diagnosed is, for example, a mechanical equipment 51 that has been in operation for many years or a mechanical equipment 51 that operates very infrequently and therefore has a small amount of measurement data, and therefore no reference value specific to the mechanical equipment 51 is stored in the storage device 22, the mechanical equipment 51 to be diagnosed can be diagnosed based on the representative reference value corresponding to the classification of the mechanical equipment 51 and the measurement value. This makes it possible to diagnose the mechanical equipment 51 regardless of the installation status or operating status of the mechanical equipment 51. As a result, an operator can maintain the mechanical equipment 51 based on the diagnosis results of the mechanical equipment 51 to prevent sudden breakdowns of the mechanical equipment 51, and it becomes possible to continue stable operation of the facility 50 in which the mechanical equipment 51 is installed.

[0120] In this embodiment, the control device 21 calculates a unique reference value for a physical quantity unique to each of the multiple pieces of mechanical equipment 51 based on multiple measurement values ​​included in multiple pieces of measurement data stored in the storage device 22, stores the calculated value in the storage device 22, and calculates a representative reference value based on the unique reference values ​​of the multiple pieces of mechanical equipment 51 of the same classification stored in the storage device 22. As a result, if the unique reference values ​​corresponding to the measurement values ​​of the physical quantities of the mechanical equipment 51 to be diagnosed are stored in the storage device 22, the diagnosis device 11 can diagnose the mechanical equipment 51 to be diagnosed based on the measurement values ​​and the unique reference values. Furthermore, since the number of data (number of samples) used by the control device 21 to calculate the representative reference value is limited, the processing load on the control device 21 can be reduced. As another example, if the control device 21 calculates a representative reference value based on multiple measurement values ​​of the physical quantities of the multiple pieces of mechanical equipment 51 of the same classification, the number of data used for the calculation is increased, thereby improving the reliability of the representative reference value.

[0121] Furthermore, in this embodiment, the control device 21 calculates a representative reference value based on multiple inherent reference values ​​that have the same rated level at the time of measurement of the physical quantities indicated by the multiple measurement data based on which the inherent reference values ​​were calculated, among the inherent reference values ​​of multiple pieces of mechanical equipment 51 with the same classification stored in the storage device 22. This allows a common representative reference value to be set for multiple pieces of mechanical equipment 51 with the same classification and rating level, and makes it possible to accurately diagnose the mechanical equipment 51 with the same classification and rating level based on the representative reference value.

[0122] Furthermore, in this embodiment, the control device 21 calculates a representative reference value based on a plurality of specific reference values ​​for which the load levels indicated by the plurality of measurement data based on which the specific reference values ​​were calculated are the same, among the specific reference values ​​of a plurality of pieces of mechanical equipment 51 having the same classification stored in the storage device 22. This allows a common representative reference value to be set for a plurality of pieces of mechanical equipment 51 having the same classification and load level, and makes it possible to accurately diagnose the mechanical equipment 51 having the same classification and load level based on the representative reference value.

[0123] Furthermore, in this embodiment, the machinery equipment diagnosis system 100 includes output devices 36 and 16 that output information, and the control device 21 determines whether the calculated representative reference value is an outlier among the multiple representative reference values ​​stored in the storage device 22. If the calculated representative reference value is not an outlier, the control device 21 stores the representative reference value in the storage device 22. If the calculated representative reference value is an outlier, the control device 21 does not store the representative reference value in the storage device 22 and outputs a notification from the output devices 36 and 16 indicating that a representative reference value corresponding to the classification has not been set. This allows the representative reference value of the physical quantity corresponding to the classification of the machinery equipment 51 to be appropriately set. Furthermore, a manager or the like can understand from the notification output by the output devices 36 and 16 that a representative reference value of the physical quantity corresponding to the classification of the machinery equipment 51 has not been set, and can take appropriate measures, such as manually inputting an alternative representative reference value.

[0124] Furthermore, in this embodiment, the control device 21 performs clustering on the calculated representative reference value and the plurality of representative reference values ​​stored in the storage device 22 to group them into a plurality of clusters, and determines that the calculated representative reference value is not an outlier if it belongs to any of the plurality of clusters, and determines that the calculated representative reference value is an outlier if it does not belong to any of the plurality of clusters. This allows the control device 21 to accurately determine whether the calculated representative reference value is an outlier or not, and to set the representative reference value more appropriately.

[0125] Furthermore, in this embodiment, when the number of measurement data for any of the mechanical equipment 51 stored in the storage device 22 reaches a predetermined number (two or more), the control device 21 calculates a value indicating the variation of the multiple measurement values ​​included in each of the multiple measurement data, and calculates the specific reference value of the corresponding mechanical equipment 51 based on the multiple measurement values ​​and the value indicating the variation. This makes it possible to appropriately set the specific reference value of the mechanical equipment 51 based on multiple measurement values ​​of physical quantities with little variation. Furthermore, when calculating a representative reference value based on the specific reference values ​​of multiple mechanical equipment 51 of the same classification, the representative reference value can also be appropriately set.

[0126] Furthermore, in this embodiment, the control device 21 determines whether the calculated inherent reference value of any of the mechanical equipment 51 is an outlier among the multiple inherent reference values ​​stored in the storage device 22, and if the calculated inherent reference value is not an outlier, stores the inherent reference value in the storage device 22. If the calculated inherent reference value is an outlier, the control device 21 does not store the inherent reference value in the storage device 22 and outputs a notification from the output devices 36, 16 indicating that the inherent reference value of the corresponding mechanical equipment 51 has not been set. This makes it possible to appropriately set the inherent reference value of the physical quantity corresponding to the mechanical equipment 51. Furthermore, a manager or the like can understand from the notification output by the output devices 36, 16 that the inherent reference value of the physical quantity corresponding to the mechanical equipment 51 has not been set, and can take measures such as manually inputting an alternative inherent reference value.

[0127] Furthermore, in this embodiment, the control device 21 performs clustering on the calculated unique reference value and the multiple unique reference values ​​stored in the storage device 22 to group them into multiple clusters, and determines that the calculated unique reference value is not an outlier if it belongs to one of the multiple clusters, and determines that the calculated unique reference value is an outlier if it does not belong to any of the multiple clusters. This allows the control device 21 to accurately determine whether the calculated unique reference value is an outlier and set the unique reference value more appropriately. Furthermore, the representative reference value can also be set more appropriately based on the unique reference value.

[0128] In this embodiment, the system includes a management device 2 and a terminal device (worker terminal device) 1 that can communicate with each other, and the storage device 22 and control device 21 are provided in the management device 2, while the input devices 15, 13 and diagnosis device 11 are provided in the terminal device 1. This allows measurement data of the physical quantities of multiple pieces of machinery and equipment 51 to be input to the terminal device 1, and the measurement data to be stored in the storage device 22 of the management device 2. The control device 21 can also set specific reference values ​​of the physical quantities corresponding to each of the multiple pieces of machinery and equipment 51, and representative reference values ​​of the physical quantities corresponding to the classification of the machinery and equipment 51. Furthermore, the specific reference values ​​and representative reference values ​​of the machinery and equipment 51 to be diagnosed can be transmitted from the management device 2 to the terminal device 1, and the terminal device 1 can diagnose the machinery and equipment 51 to be diagnosed based on the measurement values ​​of the physical quantities of the machinery and equipment 51 to be diagnosed and the specific reference values ​​or representative reference values.

[0129] Furthermore, in this embodiment, the terminal device 1 transmits measurement data including measurement values ​​of the physical quantities of the mechanical equipment 51 measured by the measuring device 52 under predetermined measurement conditions and input by the input devices 15 and 13 to the management device 2, and the management device 2 stores the measurement data received from the terminal device 1 in the storage device 22. This allows measurement data including the measurement values ​​of the physical quantities of multiple pieces of mechanical equipment 51 and the measurement conditions to be input to the terminal device 1, and the measurement data to be stored in the storage device 22 of the management device 2.

[0130] In addition, in this embodiment, the terminal device 1 transmits a request signal to the management device 2 requesting a reference value for the physical quantity of the mechanical equipment 51 to be diagnosed, and the control device 21 of the management device 2 searches for the specific reference value of the mechanical equipment 51 to be diagnosed from the information stored in the memory device 22 based on the request signal received from the terminal device 1, and if the specific reference value of the mechanical equipment 51 to be diagnosed is stored in the memory device 22, it transmits the specific reference value to the terminal device 1, and if the specific reference value of the mechanical equipment 51 to be diagnosed is not stored in the memory device 22, it transmits a representative reference value corresponding to the classification of the mechanical equipment 51 to be diagnosed to the terminal device 1, and the diagnostic device 11 of the terminal device 1 calculates the degree of deviation between the measured value of the physical quantity of the mechanical equipment 51 to be diagnosed input by the input devices 15, 13 and the specific reference value or representative reference value of the mechanical equipment 51 to be diagnosed received from the management device 2, and diagnoses the presence or absence of an abnormality in the mechanical equipment 51 to be diagnosed based on the degree of deviation. This allows the terminal device 1 to obtain the specific reference value or representative reference value of the machinery and equipment 51 to be diagnosed from the management device 2, and to reliably diagnose the machinery and equipment 51 to be diagnosed based on the measured value of the physical quantity of the machinery and equipment 51 to be diagnosed and the specific reference value or representative reference value.

[0131] Furthermore, in this embodiment, the management device 2 is a server or a computer, and the terminal device 1 is portable and has an output device 16 that outputs the results of the diagnosis of the machinery and equipment by the diagnosis device 11. As a result, a worker can carry the terminal device 1 and move to the installation location of the facility 50 where multiple machinery and equipment 51 are installed, and input measurement data of physical quantities of each machinery and equipment 51 during operation into the terminal device 1, thereby setting specific reference values ​​and representative reference values ​​of physical quantities corresponding to each machinery and equipment 51 in the management device 2 and diagnosing each machinery and equipment 51. Furthermore, based on the diagnosis results of the machinery and equipment 51 output by the output device 16 of the terminal device 1, the worker can appropriately maintain the machinery and equipment 51 to prevent sudden breakdowns of the machinery and equipment 51, and enable the facility 50 in which the machinery and equipment 51 are installed to continue operating stably.

[0132] Although the present invention has been described above, the embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0133] 1. Worker terminal device (terminal device) 2 Management device 11 Control device (diagnostic device) 13 Communication device (input device) 15 Input Devices 16 Output Devices 21 Control device 22 Storage device 23 Communication equipment 36 Output Devices 50 Water Treatment Plant 51, 51a, 51b Mechanical equipment 100 Machinery equipment diagnostic system

Claims

1. A machinery equipment diagnostic system having a diagnostic device that diagnoses a machinery equipment to be diagnosed, which is any one of a plurality of machinery equipment installed in one or more facilities, based on measured values ​​of physical quantities of the machinery equipment during operation, an input device into which a plurality of measurement data items each including the measurement values ​​of the plurality of mechanical equipment items are input; a storage device that stores the plurality of measurement data input by the input device; a control device that calculates representative reference values ​​for diagnosing the physical quantities of a plurality of similar pieces of mechanical equipment that are the same classification based on a plurality of measurement values ​​respectively included in the plurality of measurement data stored in the storage device, and stores the calculated representative reference values ​​in the storage device; The control device calculating a specific reference value of the physical quantity specific to each of the plurality of pieces of mechanical equipment based on the plurality of measurement values ​​and storing the calculated value in the storage device; A machinery equipment diagnosis system that calculates the representative reference value based on a plurality of similar unique reference values, which are a plurality of unique reference values ​​corresponding to the plurality of similar machinery equipment, among the plurality of unique reference values ​​stored in the storage device.

2. 2. The machine equipment diagnosis system according to claim 1, wherein the control device calculates the representative reference value based on a plurality of similar inherent reference values ​​among the plurality of similar inherent reference values, the plurality of similar inherent reference values ​​having the same rated level at the time of measurement of the physical quantity indicated by the plurality of measurement data based on which the plurality of similar inherent reference values ​​were calculated.

3. 2. The machine equipment diagnosis system according to claim 1, wherein the control device calculates the representative reference value based on a plurality of similar-type inherent reference values ​​among the plurality of similar-type inherent reference values, the plurality of measurement data being used to calculate the plurality of similar-type inherent reference values ​​and indicating the same load level.

4. The storage device stores a plurality of the representative reference values ​​previously calculated by the control device, The control device When a new representative reference value for the plurality of similar machinery equipment including the machinery equipment corresponding to the unique reference value is calculated due to the storage of the unique reference value in the storage device, it is determined whether the new representative reference value is an outlier compared to the plurality of past representative reference values ​​previously calculated for the plurality of similar machinery equipment among the plurality of representative reference values ​​stored in the storage device; If the new representative reference value is not an outlier, storing the new representative reference value in the storage device as a valid representative reference value for the diagnosis, and leaving the past representative reference values ​​stored in the storage device as invalid representative reference values; The machine equipment diagnosis system according to claim 1 , wherein if the new representative reference value is an outlier, the new representative reference value is not stored in the storage device.

5. The control device clustering the new representative reference value and the past representative reference values ​​into a plurality of clusters; If the new representative reference value belongs to any of the plurality of clusters, it is determined that the new representative reference value is not an outlier; The machine equipment diagnosis system according to claim 4 , wherein the new representative reference value is determined to be an outlier when the new representative reference value does not belong to any of the plurality of clusters.

6. The control device When the number of the measurement data of any of the mechanical equipment stored in the storage device reaches a predetermined number, a value indicating the variation of a plurality of measurement values ​​included in each of the plurality of measurement data is calculated; The machine equipment diagnosis system according to claim 1 , further comprising: calculating the inherent reference value of the machine equipment corresponding to the plurality of measurement values ​​based on the value indicating the variation and the plurality of measurement values ​​corresponding to the value.

7. The storage device stores a plurality of the inherent reference values ​​corresponding to each of the plurality of pieces of mechanical equipment previously calculated by the control device, The control device When a new inherent reference value of the mechanical equipment is calculated due to at least one of new installation, replacement, maintenance, a change in the usage environment, and a change in load of the mechanical equipment, it is determined whether the new inherent reference value is an outlier among the plurality of inherent reference values ​​stored in the storage device, which have been calculated in the past for the plurality of similar mechanical equipment including the mechanical equipment corresponding to the new inherent reference value; If the new unique reference value is not an outlier, the new unique reference value is stored in the storage device as a valid unique reference value for diagnosing the corresponding machine equipment, and the previous plurality of unique reference values ​​remain stored in the storage device as invalid unique reference values; The machine equipment diagnostic system according to claim 1 , wherein if the new unique reference value is an outlier, the new unique reference value is not stored in the storage device.

8. The control device clustering the new unique reference value and the plurality of past unique reference values ​​into a plurality of clusters; determining that the new unique reference value is not an outlier if the new unique reference value belongs to any of the plurality of clusters; The machine equipment diagnostic system according to claim 7 , wherein the new unique reference value is determined to be an outlier when the new unique reference value does not belong to any of the plurality of clusters.

9. a management device and a terminal device that can communicate with each other; the storage device and the control device are provided in the management device, the input device and the diagnostic device are provided in the terminal device, the terminal device transmits a request signal to the management device requesting a reference value of the physical quantity of the machine equipment to be diagnosed; The control device of the management device searching for the inherent reference value of the machine equipment to be diagnosed from the information stored in the storage device based on the request signal received from the terminal device; If the inherent reference value of the machine equipment to be diagnosed is stored in the storage device, the inherent reference value is transmitted to the terminal device; If the specific reference value of the machine equipment to be diagnosed is not stored in the storage device, the representative reference value corresponding to the classification of the machine equipment to be diagnosed is transmitted to the terminal device; 2. The machinery equipment diagnosis system according to claim 1, wherein the diagnostic device of the terminal device calculates a degree of deviation between the measurement value of the physical quantity of the machinery equipment to be diagnosed input by the input device and the specific reference value or the representative reference value of the machinery equipment to be diagnosed received from the management device, and diagnoses whether or not there is an abnormality in the machinery equipment to be diagnosed based on the degree of deviation.

10. a communication device that receives a plurality of measurement data, each including a measurement value of a physical quantity during operation of each of a plurality of pieces of mechanical equipment installed in one or more facilities; a storage device that stores the plurality of measurement data received by the communication device; a control device that calculates representative reference values ​​for diagnosing the physical quantities of a plurality of similar mechanical equipment pieces that are the same classification based on a plurality of measurement values ​​included in each of the plurality of measurement data pieces stored in the storage device, and stores the calculated representative reference values ​​in the storage device; The control device calculating a specific reference value of the physical quantity specific to each of the plurality of pieces of mechanical equipment based on the plurality of measurement values ​​and storing the calculated value in the storage device; Calculating the representative reference value based on a plurality of similar-type specific reference values, which are a plurality of the specific reference values ​​corresponding to the plurality of similar mechanical equipment among the plurality of specific reference values ​​stored in the storage device; A management device transmits the representative reference value corresponding to the classification of the machine equipment to be diagnosed, which is one of the plurality of machine equipment, to a diagnosis device that diagnoses the machine equipment to be diagnosed via the communication device.

11. a step of inputting a plurality of measurement data items, each including a measurement value of a physical quantity during operation of each of a plurality of pieces of mechanical equipment installed in one or more facilities, by an input device; storing the plurality of measurement data input by the input device in a storage device; a step in which a control device calculates a specific reference value of the physical quantity specific to each of the plurality of pieces of mechanical equipment based on a plurality of measurement values ​​respectively included in the plurality of measurement data stored in the storage device, and stores the specific reference value in the storage device; The control device calculates representative reference values ​​for diagnosing the physical quantities of the plurality of similar mechanical equipment based on a plurality of similar-type specific reference values, which are a plurality of similar mechanical equipment that are the same classification, among the plurality of specific reference values ​​stored in the storage device, and stores the representative reference values ​​in the storage device; a step in which a diagnostic device diagnoses a piece of machinery and equipment to be diagnosed, among the plurality of pieces of machinery and equipment, based on the measured values ​​of the physical quantities of the machinery and equipment to be diagnosed input by the input device and the representative reference values ​​of the physical quantities corresponding to the classification of the machinery and equipment to be diagnosed, which are stored in the storage device.

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