JP5892867B2 - Equipment inspection plan support device and program - Google Patents

Description

  The present invention relates to an equipment inspection plan support apparatus and program.

  2. Description of the Related Art Conventionally, there is a remote monitoring service for monitoring equipment such as cooling / heating equipment installed in a plurality of scattered contract facility from a monitoring center. In this remote monitoring service, equipment state data indicating the operating state of each equipment such as the temperature and pressure of the equipment in operation is collected from each facility. When an abnormality sign is detected in the facility by analyzing the facility state data, it is determined that the facility needs to be inspected. When an inspection schedule is generated for one or a plurality of facilities determined to be inspected, the maintenance staff inspects the facilities according to the inspection schedule.

  Conventionally, a normal model of equipment is created based on the measured sensor values (equipment state data) output from the equipment at the normal time, and the equipment model is compared by comparing this normal model with the measured sensor values collected during operation. Techniques for extracting equipment to be inspected by detecting abnormal signs have been proposed (for example, Patent Documents 1 and 2).

JP 2005-149137 A JP 2011-70635 A

  It is an object of the present invention to set a priority order for inspecting equipment without creating an abnormal sign detection model.

An equipment inspection plan support apparatus according to the present invention obtains from equipment status data relating to the status of the equipment from all equipment to be inspected, and equipment status data of each equipment obtained by the obtaining means. Mapping means for mapping all the facilities on a common feature map based on the feature quantities of the respective facilities, and in response to a normal range setting request, the feature quantities of all the facilities mapped on the feature map Normal range setting means for setting a normal range in which the equipment that is normally operating based on the feature map is assumed to be mapped, and based on the equipment state data of each equipment acquired by the acquisition means The position transition on the feature map is extracted for each facility from the position of each facility mapped on the feature map by the mapping means. A transition extraction unit that performs, and, upon request, a predicted time required for the position to deviate from the normal range set on the feature map based on the transition of each facility extracted by the transition extraction unit for each facility. A predicted time calculating means for calculating, and a priority setting means for setting a priority for performing inspection on each equipment with reference to the predicted time of each equipment calculated by the predicted time calculating means. .

  In addition, when there is equipment that is out of the normal range, the priority order setting means gives a higher priority to equipment out of the normal range than equipment located in the normal range. It is to set.

The program according to the present invention includes a computer, an acquisition unit that acquires facility state data relating to the state of the facility from each of all the facilities to be inspected, and each unit obtained from the facility state data of each facility acquired by the acquisition unit. Mapping means for mapping all the facilities on a common feature map based on the feature values of the facilities, in accordance with the normal range setting request, normal based on the feature values of all the facilities mapped on the feature map Normal range setting means for setting a normal range that is estimated to be mapped to the feature map, and the mapping means based on the equipment state data of each equipment acquired by the acquisition means The transition of the position on the feature map is extracted for each facility from the position of each facility mapped on the feature map. In response to a request, a transition extraction unit that calculates the estimated time required for the location to deviate from the normal range set on the feature map based on the transition of each facility extracted by the transition extraction unit. Predicted time calculating means, and a priority order setting means for setting a priority order for inspecting each equipment with reference to the predicted time of each equipment calculated by the predicted time calculating means. .

  According to the present invention, it is possible to set the priority order for inspecting equipment without creating an abnormality sign detection model.

It is the block block diagram which showed Embodiment 1 of the monitoring server which operate | moves as an equipment inspection plan assistance apparatus which concerns on this invention. 2 is a hardware configuration diagram of a server computer that forms a monitoring server according to Embodiment 1. FIG. 3 is a flowchart showing normal range setting processing in the first embodiment. 6 is a diagram showing an example of a feature amount map used in Embodiment 1. FIG. FIG. 5 is a diagram illustrating an example of a feature amount map when a normal range is set on the feature amount map illustrated in FIG. 4. 3 is a flowchart showing a prioritization process in the first embodiment. It is the block block diagram which showed Embodiment 2 of the monitoring server which operate | moves as an equipment inspection plan assistance apparatus which concerns on this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a first embodiment of a monitoring server operating as an equipment inspection plan support apparatus according to the present invention. In FIG. 1, a plurality of facilities 1 such as a cooling / heating facility installed in one or a plurality of contracted facilities and a monitor installed on a monitoring center side that provides a remote monitoring service to a contractor having each facility 1. A server 10 is shown. The monitoring server 10 is connected to each equipment 1 via a wide area network (not shown), collects equipment status data relating to the equipment status such as temperature and pressure of each equipment 1, and refers to the equipment status data to each The priority of inspection for inspecting the facility 1 is set, and the creation of an inspection schedule (inspection plan) is supported.

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

  Returning to FIG. 1, the monitoring server 10 in the present embodiment includes a data collection unit 11, a map generation unit 12, a normal range setting unit 13, a transition extraction unit 14, a predicted time calculation unit 15, a priority order setting unit 16, and data storage. Section 17 and map storage section 18. The data collection unit 11 is provided as an acquisition unit, and acquires equipment state data relating to the state of the equipment from all the equipments 1 to be inspected. The equipment state data is data representing the state of each equipment 1, and includes data indicating the operating environment of the equipment 1, data detected by a sensor or the like attached inside or outside the equipment 1, and the like. Yes. The collected equipment status data includes, for example, temperature (outside air temperature, refrigerant temperature, blowout temperature, suction temperature), atmospheric pressure, refrigerant pressure, compressor efficiency, compressor frequency, fan speed, motor current value in the case of a cold facility. (Torque), power consumption, refrigerant flow velocity, water flow velocity (chiller), and the like.

  The map generation unit 12 is provided as a mapping unit, and all the facilities 1 are displayed on a common feature amount map based on the feature amount of each facility 1 obtained from the facility state data of each facility 1 acquired by the data collection unit 11. To map. The normal range setting unit 13 is provided as a normal range setting unit, and sets a normal range in which it is estimated that the normally operating equipment 1 is mapped on the feature map in response to a normal range setting request. The transition extraction unit 14 is provided as a transition extraction unit, and from the position of each facility 1 mapped on the feature amount map by the map generation unit 12 based on the facility state data of each facility 1 acquired by the data collection unit 11. The transition of the position on the feature map is extracted for each facility 1. The predicted time calculation unit 15 is provided as a predicted time calculation unit, and based on the transition of each facility 1 extracted by the transition extraction unit 14 when setting the priority to each facility 1 in response to a priority setting request. The estimated time required for the position to deviate from the normal range set on the feature map is calculated for each facility. The priority order setting unit 16 is provided as a priority order setting unit, and sets a priority order for performing inspection on each facility 1 with reference to the predicted time of each facility 1 calculated by the predicted time calculation unit 15. The data storage unit 17 stores the equipment state data acquired by the data collection unit 11. A feature amount map generated by the map generation unit 12 is stored in the map storage unit 18.

  Each component 11-16 in the monitoring server 10 is implement | achieved by cooperation operation | movement of the computer which forms the monitoring server 10, and the program which operate | moves by CPU21 mounted in the computer. The data storage unit 17 and the map storage unit 18 are realized by the HDD 24, but may be realized by an external device accessible from the monitoring server 10.

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

  The remote monitoring service provider needs to determine an inspection schedule as to which inspection is to be performed in order to inspect the equipment 1 to be monitored. In the present embodiment, as an index for determining the order in which inspections are performed, the date and time when each facility 1 is not in a normal state and inspection is required is predicted, and the predicted date and time is higher for the facility 1 that is closer to the present. It is characterized by having a ranking. First, normal range setting processing used to determine whether each facility 1 is operating normally or is in a state where an abnormal sign is detected will be described with reference to the flowchart shown in FIG.

  First, the data collection part 11 will accumulate | store the data in the data memory | storage part 17, if the equipment state data regarding the state of the said equipment are periodically acquired from all the equipment 1 used as inspection object.

  Here, when setting of a normal range is requested by an input instruction from a supervisor or the like, the map generation unit 12 reads out the latest equipment state data of all equipment 1 from the data storage unit 17 at the present time, and performs the following process. A feature amount map is generated for all facilities 1 (step 101). If it is not specified at which time the equipment state data is used when the normal range setting request is made, an inspection schedule is generated using the latest equipment state data at the requested time. When the date and time is specified at the time of request, the normal range is set using the equipment status data corresponding to the specified date and time.

  FIG. 4 is a diagram illustrating an example of a feature map generated in the normal range setting process. The horizontal axis and the vertical axis of the feature amount map are feature amounts represented by any data item such as the refrigerant temperature and the refrigerant pressure included in the equipment state data. Or it is good also as a feature-value obtained by performing dimension compression of a data item by performing the operation which inputs a plurality of data items. In the present embodiment, two-dimensional coordinates are used as an example, but the number of axes of the feature amount map may be generated with three or more axes. The map generation unit 12 calculates the feature amount of each axis for each facility 1 based on the item data value of the facility state data of each facility 1 and maps it on the feature amount map. When mapping is performed on all the facilities 1, it is considered that a mixed normal distribution appears as illustrated in FIG. In the present embodiment, the feature amount that becomes the axis of the feature amount map is set using each data item included in the equipment state data. However, when determining the feature amount that forms the axis of the feature amount map, for example, the equipment amount You may make it use together apparatus information regarding equipment, such as 1 manufacture year.

  When the feature map is generated, the normal range setting unit 13 subsequently uses a predetermined statistical method such as an EM (Expectation Maximization) algorithm or a self-organizing map (SOM: Self-Organizing Map), The equipment 1 mapped on the feature map is classified into a plurality of groups (step 102). FIG. 5 shows a feature amount map as a result of the grouping. FIG. 5 shows an example in which each facility 1 is classified into three groups. In the present embodiment, when each facility 1 is grouped, an area including the facility 1 is formed for each group. The range that is separated from the surroundings by this area is a feature map of the facility 1 that is operating normally. It is set as a normal range presumed to be mapped on (step 103).

  In the present embodiment, as described above, a range in which the facility 1 that is normally operating is estimated to be mapped on the feature map is set as the normal range. And when it is mapped on the feature map based on the feature quantity such as the installation location, the feature quantity of the facility 1 mapped in the normal range A, B, C is considered to show a normal value. It is done. However, just because it is mapped in the normal ranges A, B, and C as will be described later, the equipment 1 is not necessarily judged to have a low priority for inspection. There is a possibility that it is judged that the priority is high (there is a sign of abnormality). On the other hand, the equipment 1 that is determined not to be mapped in the normal ranges A, B, and C is considered to have an abnormality or an abnormal sign at the present time.

  Next, a prioritization process for supporting the planning of an inspection plan will be described using the flowchart shown in FIG.

  As described above, the data collection unit 11 periodically acquires equipment state data relating to the state of the equipment from all the equipment 1 to be inspected for the remote monitoring service regardless of the generation of the inspection schedule. And stored in the data storage unit 17. The map generation unit 12 generates the feature amount map described in step 102 every time the facility state data is acquired or once a day, such as once a day, and stores the feature amount map in the map storage unit 18. . More specifically, the map generating unit 12 associates the identification information of each facility 1 with a set of position coordinate data on the feature map of the facility 1 and date / time information indicating when the facility 1 is mapped. Is registered in the map storage unit 18. Each process of this equipment state data collection and map generation is always executed periodically.

  Here, when a priority setting is requested by an input instruction from a supervisor or the like, the transition extraction unit 14 determines the feature from the position of each facility 1 mapped on the feature amount map accumulated in the map storage unit 18. The transition of the position of each facility 1 on the quantity map is extracted (step 111). More specifically, the transition extraction unit 14 refers to the position coordinate data and date / time information of each facility 1 accumulated in the map storage unit 18, so that the position of each facility 1 on the feature map is time-sequentially. Therefore, a time-series change in the position is extracted as a position transition on the feature map of each facility 1. It should be noted that a feature map saved before setting the normal range may also be a position transition extraction target.

  As described above, the transition extraction unit 14 extracts the transition of the position of each facility 1 at the time when priority setting is requested by an input instruction by a monitor or the like. Instead, for example, the transition may be extracted in response to a request triggered by the installation timing of the equipment 1 or the timing of a regular period such as season.

  When the transition of the position on the feature map is extracted for each equipment 1 in response to the priority setting request, the predicted time calculation unit 15 continues to place each equipment 1 on the feature map in the normal range setting process. A date and time outside the set normal range is predicted for each facility 1 (step 112). A feature based on equipment state data collected after the current time with respect to the current position of the equipment 1 located in the normal range with reference to the interval and direction of each mapped position on the feature map that can be recognized from the position transition The position (distance and direction from the current position) mapped on the quantity map can be estimated by calculation. Therefore, the date and time outside the normal range set on the feature map can be predicted. When the predicted time calculation unit 15 calculates the predicted date and time outside the normal range for each facility 1, the priority order setting unit 16 gives priority to the facility 1 in the order of the calculated predicted date and time (step 113). In other words, a higher priority is assigned to the facility 1 whose date and time close to the present time are predicted.

  As described above, when the priority order setting unit 16 determines the priority order to be assigned to each facility 1, for example, the determined priority order is displayed on the display 28 and presented to maintenance personnel or monitoring personnel. Alternatively, information about the determined priority order may be provided to the outside via a network.

  According to the present embodiment, the date and time that deviates from the normal range on the feature map is predicted for each facility 1, and priorities for performing inspections in order from the predicted date and time are given. As a result, the date and time at which it is estimated that an abnormal sign will be detected even for the facility 1 that is recognized to be in a normal state at the present time (that is, the predicted date and time that is estimated to be out of the normal range). An inspection schedule can be generated by reference.

  If there is a facility 1 that is out of the normal range from the beginning on the feature map, the facility 1 has a higher priority than the facility 1 currently included in the normal range. It may be set so that early inspection can be performed. In addition, for the equipment 1 in which the transition of the mapping position on the feature map shows an abnormal tendency, such as the direction and the position of the mapping position transition change suddenly, an abnormal tendency is shown. A relatively higher priority order than that of the facility 1 that does not exist may be set so that early inspection can be performed.

Embodiment 2. FIG.
Although the monitoring server 10 in the first embodiment sets the priority of inspection for the facility 1, in the present embodiment, the monitoring server 10 is provided with a function for generating an inspection schedule.

  FIG. 7 is a block configuration diagram showing the second embodiment of the monitoring server 10 in the present embodiment. In FIG. 7, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The monitoring server 10 shown in FIG. 7 has a configuration in which an inspection plan generation unit 19 is added to the monitoring server 10 shown in FIG. The hardware configuration of the monitoring server 10 in the present embodiment may be the same as that in the first embodiment.

  In the monitoring server 10 in the present embodiment, the processing until the priority order is set may be the same as in the first embodiment. That is, when the priority order setting unit 16 determines the priority order assigned to each facility 1 in the same manner as in the first embodiment, the inspection plan generation unit 19 refers to the priority order and generates an inspection schedule. In other words, the schedule is basically made so that the inspections are performed in order from the equipment 1 with the highest priority. However, since the maintenance inspector patrols the facility to inspect each facility 1, the inspection schedule may be generated with reference to information such as the installation location of each facility 1.

  When the inspection schedule is drawn up as described above, the maintenance inspector visits the contract facility according to the inspection schedule and inspects the facility 1.

  1 equipment, 10 monitoring server, 11 data collection unit, 12 map generation unit, 13 normal range setting unit, 14 transition extraction unit, 15 prediction time calculation unit, 16 priority order setting unit, 17 data storage unit, 18 map storage unit, 19 Inspection plan generator, 21 CPU, 22 ROM, 23 RAM, 24 Hard disk drive (HDD), 25 HDD controller, 26 Mouse, 27 Keyboard, 28 Display, 29 Input / output controller, 30 Network controller, 31 Internal bus.

Claims (3)

An acquisition means for acquiring equipment state data relating to the state of the equipment from all equipment to be inspected;
Mapping means for mapping all the facilities on a common feature amount map based on the feature amount of each facility obtained from the equipment state data of each facility obtained by the obtaining means;
In response to a normal range setting request, a normal range in which facilities that are operating normally based on the feature amounts of all the facilities mapped on the feature amount map are estimated to be mapped on the feature amount map. Normal range setting means to be set;
Transition for extracting the transition of the position on the feature amount map for each facility from the position of each facility mapped on the feature amount map by the mapping unit based on the facility state data of each facility acquired by the acquiring unit Extraction means;
In response to a request, a predicted time calculation unit that calculates, for each facility, a predicted time required for the position to deviate from the normal range set on the feature map based on the transition of each facility extracted by the transition extraction unit. When,
Priority order setting means for setting a priority order for performing inspection on each facility with reference to the predicted time of each facility calculated by the predicted time calculation means;
An equipment inspection plan support apparatus characterized by comprising:   The priority order setting means sets, when there is equipment out of the normal range, a relatively higher priority for equipment out of the normal range than equipment located in the normal range. The equipment inspection plan support device according to claim 1. Computer
An acquisition means for acquiring equipment state data relating to the state of the equipment from all equipment to be inspected,
Mapping means for mapping all facilities on a common feature amount map based on the feature amount of each facility obtained from the equipment state data of each facility obtained by the obtaining means,
In response to a normal range setting request, a normal range in which facilities that are operating normally based on the feature amounts of all the facilities mapped on the feature amount map are estimated to be mapped on the feature amount map. Normal range setting means to set,
Transition for extracting the transition of the position on the feature amount map for each facility from the position of each facility mapped on the feature amount map by the mapping unit based on the facility state data of each facility acquired by the acquiring unit Extraction means,
In response to a request, a predicted time calculation unit that calculates, for each facility, a predicted time required for the position to deviate from the normal range set on the feature map based on the transition of each facility extracted by the transition extraction unit. ,
Priority order setting means for setting a priority order for performing inspection on each facility with reference to the predicted time of each facility calculated by the predicted time calculation means,
Program to function as.

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