WO2014167917A1 - State monitoring device, state monitoring system, and state monitoring method - Google Patents

Abstract

A state monitoring device according to one embodiment of the present invention is provided with: a first alarm-generation unit which either refers to first alarm-generation conditions and acquired information acquired from devices installed in a plant, determines that the acquired information satisfies the first alarm-generation conditions, and generates a first alarm indicating an abnormality related to measurement values measured by the devices, or refers to the acquired information, and generates a first alarm indicating an abnormality related to the devices themselves; a second alarm-generation unit which refers to second alarm-generation conditions and a combination of a plurality of pieces of the acquired information related to the devices and/or a plurality of the first alarms for the devices, determines that the combination of the acquired information and/or the first alarms satisfies the second alarm-generation conditions, and generates a second alarm indicating an estimated abnormal state of the plant; and a third alarm-generation unit which refers to third alarm-generation conditions and a combination of at least one from among a plurality of pieces of the acquired information related to the devices, a plurality of the first alarms for the devices, and a plurality of the second alarms, determines that the combination of at least one from among the acquired information, the first alarms, and the second alarms satisfies the third alarm-generation conditions, and generates a third alarm indicating a recommended countermeasure for resolving the abnormality of the plant.

Description

Status monitoring device, status monitoring system, and status monitoring method

The present invention relates to a state monitoring device, a state monitoring system, and a state monitoring method for monitoring the state of a plant.
This application claims the priority based on Japanese Patent Application No. 2013-082001 for which it applied to Japan on April 10, 2013, and uses the content here.

Conventionally, a distributed control system (DCS: Distributed Control System) in which a field device called a field device (measuring instrument, operating device) and a control device for controlling these devices are connected via communication means has been used in a plant. It is built and advanced automatic operation is realized. In a plant in which such a distributed control system is constructed, in order to realize efficient and appropriate operation by a small number of operators, the state of the plant is constantly monitored, and abnormal monitoring results (for example, failure of field equipment) If a plant abnormality such as a deviation from the target value of the process or the like occurs, a state monitoring system has also been constructed that promptly notifies the operator of the abnormality as an alarm.

The above-mentioned state monitoring system monitors the measurement values (process values) of field devices and information (alarms) that indicates abnormalities in field devices, and the process values and alarms collected by the collection devices. The system generally includes a state monitoring device that generates an alarm to be notified to the operator according to the monitoring result, and a notification device that notifies the operator of the alarm generated by the state monitoring device. The state monitoring device generates an alarm to be notified to the operator using alarm generation condition information defined in advance (information defining conditions for generating an alarm such as an upper threshold or a lower threshold of a process value).

As for the alarm management method in the plant and the required specifications of the condition monitoring system that manages alarms, international standards are established by the ISA18 Committee of the International Society for Measurement and Control (ISA), IEC / SC65A / WG15, etc. Work is being done. Patent Documents 1 to 7 below disclose conventional techniques for performing control, classification, analysis, and the like of alarms generated in a plant.

In the standard ISA18.2 defined by the ISA18 committee described above, “alarm is a means for notifying the operator of equipment failure or process abnormality that needs to be handled by the operator”. Conventionally, however, an alarm is set for each field device without sufficiently considering the necessity of handling by the operator and the contents of the alarm. For this reason, in the conventional state monitoring system, when an abnormality occurs in the plant, unnecessary alarms frequently occur, and when the operator determines an appropriate countermeasure according to the alarm, the alarm disturbs the determination. There is a risk of becoming.

When an abnormality that occurs in a plant is directly reflected in the measurement results of one field device (for example, an abnormality in pressure or flow rate), there is a one-to-one correspondence between the abnormality that occurs in the plant and the abnormality in the measurement result Therefore, the operator can easily recognize the abnormal state of the plant (the type of abnormality and the location of the abnormality) by referring to one alarm notified from the state monitoring system. However, for example, when an abnormality that occurs in a plant is reflected in the measurement results of a plurality of field devices, the operator must comprehensively consider a plurality of alarms notified from the state monitoring system. Unless it is an abundant and skilled operator, the abnormal state of the plant cannot be recognized.

When an alarm is notified from the condition monitoring system, it recognizes the abnormal state of the plant from the content of the alarm, estimates the cause of the alarm, determines the action that can eliminate the abnormality that is the cause of the alarm, The operation of executing the countermeasure is performed by the plant operator. In addition to simply notifying the operator of an alarm indicating that an abnormality has occurred in the plant, there are alarms indicating the estimated abnormal state of the plant and alarms indicating the actions that the operator should take to resolve the abnormality. If notified, it is possible to take an appropriate measure even if it is not a skilled operator.

U.S. Pat. No. 8,040,230 US Pat. No. 7,893,824 US Pat. No. 7,079,984 US Pat. No. 7,213,174 US Pat. No. 7,692,537 US Pat. No. 6,690,274 US Pat. No. 6,535,122

One embodiment of the present invention provides a state monitoring device, a state monitoring system, and a state monitoring method capable of providing a useful alarm that allows an operator to properly operate a plant.

The state monitoring apparatus according to an embodiment of the present invention refers to collection information collected from equipment installed in a plant and a first alarm generation condition, and determines whether the collection information satisfies the first alarm generation condition. A first alarm generator that determines and generates a first alarm that indicates an abnormality of a measured value measured by the device, or generates a first alarm that indicates an abnormality of the device itself by referring to the collected information And at least one of the collected information and the first alarm with reference to a combination of at least one of the collected information about the plurality of devices and the first alarm for the plurality of devices and a second alarm generation condition. A second alarm for determining whether a combination satisfies the second alarm generation condition and generating a second alarm indicating an estimated abnormal state of the plant The collection unit, the collection information for the plurality of devices, the first alarm for the plurality of devices, and at least one combination of the plurality of second alarms and a third alarm generation condition, and the collection Determining whether a combination of at least one of the information, the first alarm and the second alarm satisfies the third alarm generation condition, and a third alarm indicating a recommended action for solving the abnormality of the plant And a third alarm generation unit for generation.
The state monitoring apparatus according to the embodiment may further include a storage unit that stores the first alarm generation condition, the second alarm generation condition, and the third alarm generation condition. The first, second, and third alarm generation units are configured to output the first, second, and third alarms when the first, second, and third alarm generation conditions stored in the storage unit are satisfied. May be generated respectively.
In the state monitoring apparatus of the above embodiment, the first, second, and third alarm generation conditions may be prepared for each predetermined operation state of the plant. The first, second, and third alarm generation units are the first, second, and second alarm generation conditions that correspond to the operation state of the plant among the first, second, and third alarm generation conditions stored in the storage unit. The first, second and third alarms may be generated when the third alarm generation condition is satisfied.
In the state monitoring apparatus according to the above-described embodiment, a threshold for a time change of the collected information may be defined in the first, second, and third alarm generation conditions. In the first, second, and third alarm generation units, does the time change of the collected information exceed a threshold for the time change of the collected information defined in the first, second, and third alarm generation conditions? It may be determined whether or not.
In the state monitoring device of the above embodiment, the operation unit to which an operation instruction indicating whether or not the abnormal state of the plant indicated by the second alarm matches the actual abnormal state of the plant is input, A first update unit that dynamically changes the second alarm generation condition stored in the storage unit according to an operation instruction may be further included.
The state monitoring apparatus according to the above-described embodiment stores an operation unit to which an operation instruction indicating whether or not a countermeasure performed based on the third alarm is appropriate, and stores the operation instruction in the storage unit according to the operation instruction. And a second updating unit that dynamically changes the third alarm generation condition.
The state monitoring apparatus according to the embodiment may further include a notification unit that notifies the first, second, and third alarms generated by the first, second, and third alarm generation units.
In the state monitoring device of the above embodiment, when the collected information indicates an abnormality of the device itself, the first alarm generation unit refers to the collected information without referring to the first alarm occurrence condition. A first alarm may be generated.
A state monitoring system according to another embodiment of the present invention includes a collection device that collects information from equipment installed in a plant as collection information, a state monitoring device, and the collection information and a first alarm generation condition. Refer to and determine whether the collected information satisfies the first alarm generation condition, and generate a first alarm indicating an abnormality of a measured value measured by the device, or refer to the collected information, A first alarm generation unit that generates a first alarm indicating an abnormality of the device itself, a combination of at least one of the collected information about the plurality of devices and the first alarm about the plurality of devices, and a second alarm generation And determining whether or not a combination of at least one of the collected information and the first alarm satisfies the second alarm generation condition. A second alarm generating unit that generates a second alarm indicating an abnormal state of the plant; at least one of the collected information about the plurality of devices; the first alarm about the plurality of devices; and the plurality of second alarms. With reference to one combination and a third alarm generation condition, it is determined whether at least one combination of the collected information, the first alarm, and the second alarm satisfies the third alarm generation condition, The state monitoring device comprising a third alarm generating unit for generating a third alarm indicating a recommended action for solving the abnormality, and the first, second and third alarms generated by the state monitoring device. You may provide the notification apparatus which notifies.
In the state monitoring system of the above embodiment, the notification device may be provided in the state monitoring device.
In the state monitoring system of the above embodiment, the state monitoring device may further include a storage unit that stores the first alarm generation condition, the second alarm generation condition, and the third alarm generation condition. The first, second, and third alarm generation units are configured to output the first, second, and third alarms when the first, second, and third alarm generation conditions stored in the storage unit are satisfied. May be generated respectively.
In the state monitoring system of the above embodiment, the first, second, and third alarm generation conditions may be prepared for each predetermined operation state of the plant. The first, second, and third alarm generation units are the first, second, and second alarm generation conditions that correspond to the operation state of the plant among the first, second, and third alarm generation conditions stored in the storage unit. The first, second and third alarms may be generated when the third alarm generation condition is satisfied.
In the state monitoring system according to the above-described embodiment, a threshold for a time change of the collected information may be defined in the first, second, and third alarm generation conditions. In the first, second, and third alarm generation units, does the time change of the collected information exceed a threshold for the time change of the collected information defined in the first, second, and third alarm generation conditions? It may be determined whether or not.
In the state monitoring system of the above embodiment, the state monitoring device receives an operation instruction indicating whether or not the abnormal state of the plant indicated by the second alarm matches the actual abnormal state of the plant. And a first updating unit that dynamically changes the second alarm generation condition stored in the storage unit according to the operation instruction.
In the state monitoring system according to the above embodiment, the state monitoring device is configured to input an operation instruction indicating whether or not a countermeasure performed based on the third alarm is appropriate, and according to the operation instruction. And a second update unit that dynamically changes the third alarm generation condition stored in the storage unit.
A state monitoring method according to still another embodiment of the present invention refers to collection information collected from equipment installed in a plant and a first alarm generation condition, and the collection information satisfies the first alarm generation condition. And if the collected information satisfies the first alarm generation condition, generate a first alarm indicating an abnormality in the measured value measured by the device, or refer to the collected information. A first step of generating a first alarm indicating an abnormality of the device itself when the collected information indicates an abnormality of the device itself; and the collection information about a plurality of the devices and the collection information about the plurality of devices The combination of at least one of the first alarms and the second alarm occurrence condition is referred to, and the combination of at least one of the collected information and the first alarm is the second alarm. A second alarm indicating whether the occurrence condition is satisfied, and indicating an abnormal state of the plant to be estimated when a combination of at least one of the collected information and the first alarm satisfies the second alarm generation condition The second information generating step, the collected information for the plurality of devices, the first alarm for the plurality of devices, and a combination of at least one of the plurality of second alarms and a third alarm generation condition. Determining whether at least one combination of the collected information, the first alarm, and the second alarm satisfies the third alarm generation condition, and at least the collected information, the first alarm, and the second alarm When one combination satisfies the third alarm generation condition, the abnormality of the plant is solved. May have a third step of generating the recommended third alarm indicating the address is to.
In the state monitoring method of the above embodiment, the first, second and third alarm generation conditions may be prepared for each predetermined operation state of the plant. The first step may generate the first alarm when the collected information satisfies the first alarm generation condition corresponding to the operation state of the plant. The second step may generate the second alarm when a combination of at least one of the collected information and the first alarm satisfies the second alarm generation condition corresponding to the operation state of the plant. The third step generates the third alarm when at least one combination of the collection information, the first alarm, and the second alarm satisfies the third alarm generation condition according to the operation state of the plant. You can do it.
In the state monitoring method of the above embodiment, a threshold for a time change of the collected information may be defined in the first, second, and third alarm generation conditions. The first step may determine whether a time change of the collected information exceeds a threshold for the time change of the collected information defined in the first alarm generation condition. The second step may determine whether or not the time change of the collected information exceeds a threshold for the time change of the collected information specified in the second alarm generation condition. The third step may determine whether or not the time change of the collected information exceeds a threshold for the time change of the collected information specified in the third alarm generation condition.
The state monitoring method of the above embodiment includes a step of inputting an operation instruction indicating whether or not the abnormal state of the plant indicated by the second alarm matches the actual abnormal state of the plant, and the operation instruction And changing the second alarm generation condition dynamically.
The state monitoring method according to the embodiment includes a step of inputting an operation instruction to the operation unit indicating whether or not a countermeasure performed based on the third alarm is appropriate, and according to the operation instruction, And a step of dynamically changing the three alarm generation conditions.

According to one aspect of the present invention, a first alarm that indicates an abnormality in a measured value measured by a device or an abnormality in the device itself is generated according to collected information collected from each of a plurality of devices installed in a plant. And generating a second alarm indicating an estimated abnormal state of the plant from at least one combination of the collected information and the first alarm, and generating at least one combination of the collected information, the first alarm, and the second alarm from the plant. Since the third alarm indicating the recommended action for eliminating the abnormality is generated, it is possible to provide a useful alarm that allows the operator to properly operate the plant.

1 is a block diagram showing an overall configuration of a state monitoring system according to a first embodiment of the present invention. It is a block diagram which shows the principal part structure of the state monitoring apparatus by 1st Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 1st Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 1st Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 1st Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 1st Embodiment of this invention. It is a flowchart which shows the outline | summary of the alarm generation operation | movement of the state monitoring system by 1st Embodiment of this invention. It is a block diagram which shows the whole structure of the state monitoring system by 2nd Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 2nd Embodiment of this invention. It is a block diagram which shows the whole structure of the state monitoring system by 3rd Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 3rd Embodiment of this invention. It is a block diagram which shows the whole structure of the state monitoring system by 4th Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 4th Embodiment of this invention. It is a block diagram which shows the whole structure of the state monitoring system by 5th Embodiment of this invention. It is a figure which shows an example of the alarm generation conditions used in 5th Embodiment of this invention.

Hereinafter, a state monitoring device, a state monitoring system, and a state monitoring method according to an embodiment of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
<Overall configuration of status monitoring system>
FIG. 1 is a block diagram showing the overall configuration of the state monitoring system according to the first embodiment of the present invention. As shown in FIG. 1, the state monitoring system 1 of the first embodiment includes an input device 10 (collecting device), a communication device 20 (collecting device), and a state monitoring device 30 and is installed at the plant site. The state of the plant is monitored using information obtained from the devices D1 and D2, and an alarm for notifying an abnormality occurring in the plant is generated according to the monitoring result.

The devices D1 and D2 are, for example, sensor devices such as a temperature sensor, a pressure gauge, and a flow meter, valve devices such as a flow control valve and an on-off valve, actuator devices such as a fan and a motor, and other fields installed on the plant site. Equipment. The device D1 is connected to the input device 10 through an analog transmission line (for example, a transmission line used for transmitting a “4 to 20 mA” signal) L, and is an analog indicating measurement results of temperature, pressure, flow rate, and the like. The signal is transmitted via the analog transmission line L. On the other hand, the device D2 is connected to the communication device 20 via a network N installed in a plant such as a field network, for example, and digital signals indicating measurement results such as temperature, pressure, and flow rate are transmitted to the network N. Send through.

The input device 10 is connected to the device D1 via the analog transmission line L, receives an analog signal transmitted from the device D1 via the analog transmission line L, and receives a measurement result (process value) of the device D1. And information (alarms) indicating abnormality of the device D1 is collected. The communication device 20 is connected to the network N, communicates with the device D2 via the network N under the control of the state monitoring device 30, and indicates a measurement result (process value) of the device D2 and an abnormality of the device D2. Collect information (alarms). Any information (collected information) collected by the input device 10 and the communication device 20 is output to the state monitoring device 30. The input device 10 and the communication device 20 can also set parameters for the devices D1 and D2 under the control of the state monitoring device 30.

The state monitoring device 30 includes interface units 31a and 31b, a control unit 32, a storage unit 33, an operation unit 34, and a display unit 35 (notification device), and uses information obtained from the devices D1 and D2 for the plant. In addition to monitoring the state, an alarm is generated for notifying an abnormality occurring in the plant according to the monitoring result. The state monitoring device 30 is realized by a computer such as a workstation or a personal computer.

The interface unit 31 a is an interface for connecting the input device 10 to the state monitoring device 30, outputs information collected by the input device 10 to the control unit 32, and outputs control signals from the control unit 32 to the input device 10. Output to. The interface unit 31 b is an interface for connecting the communication device 20 to the state monitoring device 30, outputs information collected by the communication device 20 to the control unit 32, and sends control signals from the control unit 32 to the communication device 20. Output to.

The control unit 32 controls the operation of the state monitoring device 32 in an integrated manner. For example, the control unit 32 obtains process values and alarms obtained by the devices D1 and D2 collected by the input device 10 and the communication device 20 via the interface units 31a and 31b, and monitors the state of the plant. To do. The input device 10 and the communication device 20 are controlled as necessary to set parameters for the devices D1 and D2.

The control unit 32 uses the process values and alarms acquired from the devices D1 and D2 to generate an alarm for notifying abnormality that has occurred in the plant. Specifically, the control unit 32 generates three types of alarms: a measurement value alarm A1 (first alarm), an estimated cause alarm A2 (second alarm), and a recommended countermeasure alarm A3 (third alarm) (FIG. 2). reference). The measurement value alarm A1 is an alarm indicating an abnormality in the process value measured by the devices D1 and D2 or an abnormality in the devices D1 and D2 itself. The estimated cause alarm A2 is an alarm indicating the estimated abnormal state of the plant (the type of abnormality or the place where the abnormality occurs in the plant). There are various categories of types of abnormalities. For example, the types of anomalies are `` Failure '', `` Measured value indeterminate (Function check) '', `` Off-specification '', `` Maintenance required Anomalies such as ")" are included, but other classifications may be used. The recommended coping alarm A3 is an alarm indicating a coping recommended for solving the plant abnormality. Details of these alarms will be described later.

The storage unit 33 is realized by an external storage device such as a hard disk, and stores an alarm generation condition C that is information indicating a condition for the control unit 32 to generate an alarm. As described above, the control unit 32 generates three types of alarms: the measurement value alarm A1, the estimated cause alarm A2, and the recommended countermeasure alarm A3. Therefore, the alarm generation condition C stored in the storage unit 33 is the alarm generation condition C1 for generating the measurement value alarm A1, the alarm generation condition C2 for generating the estimated cause alarm A2, and the recommended countermeasure alarm A3. The alarm generation condition C3 is included. Details of these alarm generation conditions will be described later.

The operation unit 34 includes an input device such as a keyboard and a pointing device, and is operated by a plant operator, for example, and outputs an instruction corresponding to the operation of the operator to the control unit 32. The display unit 35 includes a display device such as a liquid crystal display device, and displays information indicating the monitoring state of the plant, an alarm generated by the control unit 32, and other various information, for example, to an operator of the plant. Notify plant status and alarms.

The display unit 35 displays the alarms (measured value alarm A1, estimated cause alarm A2, and recommended countermeasure alarm A3) generated by the control unit 32 by distinguishing them for each type. This is because the plant operator can quickly and easily grasp the type of alarm generated by the state monitoring device. For example, the display unit 35 displays the symbol or character color to be used, the shape of the symbol, the content of the character string, and the like for each of the measurement value alarm A1, the estimated cause alarm A2, and the recommended countermeasure alarm A3. You may make it notify the alarm produced | generated by the control part 32 with a sound. When notifying the alarm by sound, for example, it is desirable to change the pitch or rhythm according to the type of alarm.

<Main components of the status monitoring device>
FIG. 2 is a block diagram showing a main configuration of the state monitoring apparatus according to the first embodiment of the present invention. As shown in FIG. 2, the control unit 32 of the state monitoring device 30 includes a measurement value alarm generation unit 32a (first alarm generation unit), an estimated cause alarm generation unit 32b (second alarm generation unit), and a recommended countermeasure alarm generation unit. 32c (third alarm generation unit). In the measurement value alarm generation unit 32a, the estimated cause alarm generation unit 32b, and the recommended countermeasure alarm generation unit 32c, software for realizing each function is read into a computer, and the software and hardware resources cooperate. Is realized.

The measurement value alarm generation unit 32a generates a measurement value alarm A1 according to the collection information X that is information collected by the input device 10 and the communication device 20. The estimated cause alarm generation unit 32b generates the estimated cause alarm A2 from at least one of the collection information X and the measured value alarm A1. The recommended countermeasure alarm generation unit 32c generates a recommended countermeasure alarm A3 from at least one combination of the collection information X, the measurement value alarm A1, and the estimated cause alarm A2.

The measured value alarm generation unit 32a, the estimated cause alarm generation unit 32b, and the recommended countermeasure alarm generation unit 32c are measured value alarms when the alarm generation conditions C1, C2, and C3 stored in the storage unit 33 are satisfied. A1, an estimated cause alarm A2, and a recommended countermeasure alarm A3 are generated. The measurement value alarm generation unit 32a generates the measurement value alarm A1 based on the collection information X without using the alarm generation condition C1 when the collection information X indicates an abnormality of the devices D1 and D2 itself.

Next, the alarm generation conditions C1 to C3 will be described in detail. 3 to 5 are diagrams showing an example of an alarm generation condition used in the first embodiment of the present invention. FIG. 3 is a diagram illustrating an example of an alarm generation condition C1 for generating a measurement value alarm A1, and FIGS. 4A and 4B are diagrams illustrating an example of an alarm generation condition C2 for generating an estimated cause alarm A2. FIG. 5 is a diagram illustrating an example of the alarm generation condition C3 for generating the recommended countermeasure alarm A3.

The alarm generation condition C1 illustrated in FIG. 3 is associated with a device ID uniquely assigned to each of the devices D1 and D2 and a threshold that is a condition for generating the measurement value alarm A1. For example, the device ID “XXXXXXX” is associated with 80 [° C.] as the threshold (upper threshold). When the measurement result (collection information X) obtained from the device (temperature sensor) to which the device ID “XXXXXXXXX” is attached exceeds 80 [° C.], the measurement value alarm generation unit 32a becomes “XXXXXXXXXX”. A measurement value alarm A1 indicating that the measurement value of the device with the device ID is abnormal is generated.

The alarm generation condition C2 illustrated in FIG. 4A indicates information indicating a combination of ranks of measured values at each measurement point (installation position of each device) and an estimated cause (location in the plant that is estimated to be abnormal). Information). For example, the measurement value of “Measurement Point 1” is No. 1, the measurement value of “Measurement Point 2” is No. 2, and the measurement value of “Measurement Point 3” is No. 3. Is associated with information “POS1” as information indicating an abnormal location. The estimated cause alarm generation unit 32b has collected information X indicating that the measurement value of “measurement point 1” is the highest, then the measurement value of “measurement point 2” is the highest, and the measurement value of “measurement point 3” is the lowest. If it is obtained, an estimated cause alarm A2 indicating that the location indicated by “POS1” in the plant is an abnormal location is generated.

The alarm generation condition C2 illustrated in FIG. 4B includes information indicating a combination of the presence / absence of occurrence of a measurement value alarm A1 at each measurement point (installation position of each device) and an estimated cause (information indicating a location estimated to be abnormal). Are associated with each other. For example, for the information indicating that the measurement value alarm A1 is not generated for “measurement point 1” and the measurement value alarm A1 is generated for “measurement point 2” and “measurement point 3”. The information “POS2” is associated with the information indicating the abnormal part.

The estimated cause alarm generation unit 32b obtains the measurement value alarm A1 for “measurement point 2” and “measurement point 3” and the measurement value alarm A1 for “measurement point 1” from the measurement value alarm generation unit 32a. If not, an estimated cause alarm A2 indicating that the location indicated by “POS2” in the plant is an abnormal location is generated. The alarm generation condition C2 may be a combination of the condition for the collected information X and the presence / absence of occurrence of the measurement value alarm A1 shown in FIG. 4B. For example, the alarm generation condition C2 includes the information indicating the combination of the rank order of the measurement value at each measurement point (installation position of each device) as illustrated in FIG. 4A and the generation of the measurement value alarm A1 illustrated in FIG. 4B. The information indicating the combination of the presence and absence and the presumed cause (information indicating the location estimated to be abnormal) may be associated with each other. In this case, the estimated cause alarm A2 may be generated using the collection information X, the measurement value alarm A1, and the alarm generation condition C2.

The alarm generation condition C3 illustrated in FIG. 5 is information indicating a combination of information indicating whether or not the measurement value alarm A1 is generated at each measurement point (installation position of each device) and information indicating whether or not the estimated cause alarm A2 is generated. Is associated with a recommended measure indicating a recommended measure for eliminating a plant abnormality. For example, “manual operation”, “emergency stop”, “raw material restriction”, etc. are prepared as recommended measures.

When the information indicating the combination of information indicating whether or not the measurement value alarm A1 and the estimated cause alarm A2 are generated is satisfied, the recommended countermeasure alarm generation unit 32c indicates the recommended countermeasure associated with the satisfied information. A recommended handling alarm A3 is generated. The alarm generation condition C3 may be at least one combination of the conditions for the collected information X, the presence / absence of the measurement value alarm A1 shown in FIG. 4B, and the presence / absence of the estimation cause alarm A2. For example, the alarm generation condition C3 is information indicating combinations of ranks of measurement values at each measurement point (installation position of each device) as illustrated in FIG. 4A, and occurrence of the measurement value alarm A1 illustrated in FIG. 4B. Any one of presence / absence and presence / absence of the presumed cause alarm A2 may be associated with a recommended countermeasure alarm A3 indicating a recommended countermeasure, and the recommended countermeasure alarm A3 is generated using the alarm occurrence condition C3. Good. As another example, the alarm generation condition C3 is information indicating a combination of ranks of measurement values at each measurement point (installation position of each device) as illustrated in FIG. 4A, and a measurement value alarm A1 illustrated in FIG. 4B. Any two of the occurrence of the occurrence of the cause and the occurrence of the estimated cause alarm A2 may be associated with the recommended action alarm A3 indicating the recommended action, and the recommended action alarm A3 is determined using this alarm occurrence condition C3. May be generated. As yet another example, the alarm generation condition C3 includes information indicating a combination of ranks of measurement values at each measurement point (installation position of each device) as illustrated in FIG. 4A, and a measurement value alarm illustrated in FIG. 4B. Three combinations of the presence / absence of occurrence of A1 and the occurrence / non-occurrence of the estimated cause alarm A2 may be associated with the recommended countermeasure alarm A3 indicating the recommended countermeasure, and the recommended countermeasure alarm A3 using the alarm occurrence condition C3. May be generated.

<Operation of the status monitoring system>
Next, an alarm generation operation in the state monitoring system 1 described above will be described. FIG. 6 is a flowchart showing an outline of an alarm generation operation of the state monitoring system according to the first embodiment of the present invention. The process of the flowchart shown in FIG. 6 is repeatedly performed at a constant cycle, for example, or irregularly.

When the processing of the flowchart shown in FIG. 6 is started, first, processing for collecting process values and alarms from the devices D1 and D2 is performed (step S11). Specifically, the input device 10 and the communication device 20 are controlled by the monitoring control device 30, the process of collecting process values and alarms from the device D 1 is performed by the input device 10, and the process value from the device D 2 by the communication device 20. And processing to collect alarms. Process values and alarms (collection information X) collected by such processing are input to the state monitoring device 30.

Next, the collection information X is input to the control unit 32, and the alarm generation condition C stored in the storage unit 33 is read to the control unit 32, and the measurement value alarm generation condition (alarm generation condition C1) is satisfied. It is judged by the measured value alarm generation part 32a whether it carried out (step S12). When it is determined that the alarm generation condition C1 is satisfied (when the determination result of step S12 is “YES”), the measurement value alarm generation unit 32a performs a process of generating the measurement value alarm A1 (step S13: No. 1). 1 step).

For example, if the measurement result (collection information X) obtained from the device (see FIG. 3) with the device ID “XXXXXXXXX” exceeds 80 [° C.], the device ID “XXXXXXXXX” is attached. The measurement value alarm generation unit 32a performs processing for generating a measurement value alarm A1 indicating that the measured value of the device is abnormal. The measurement value alarm A1 generated by the measurement value alarm generation unit 32a is output from the control unit 32 to the display unit 35 and displayed on the display unit 35.

When the process of step S13 is completed, the estimated cause alarm generation unit 32b determines whether or not the estimated cause alarm generation condition (alarm generation condition C2) is satisfied (step S14). The process of step S14 is also performed when the measurement value alarm generation unit 32a determines that the measurement value alarm generation condition (alarm generation condition C1) is not satisfied (when the determination result of step S12 is “NO”). Done.

When it is determined that the alarm generation condition C2 is satisfied (when the determination result of step S14 is “YES”), a process of generating the estimated cause alarm A2 is performed by the estimated cause alarm generation unit 32b (step S15: No. 1). 2 steps). For example, as shown in FIG. 4B, when the measurement value alarm A1 does not occur for “measurement point 1” and the measurement value alarm A1 occurs for “measurement point 2” and “measurement point 3”, A process for generating an estimated cause alarm A2 indicating that “POS2” is an abnormal location is performed by the estimated cause alarm generation unit 32b. The estimated cause alarm A2 generated by the estimated cause alarm generation unit 32b is output from the control unit 32 to the display unit 35 and displayed on the display unit 35.

When the processing of step S15 is completed, the recommended countermeasure alarm generation unit 32c determines whether or not the condition for generating the recommended countermeasure alarm (alarm generation condition C3) is satisfied (step S16). The process of step S16 is also performed when the estimated cause alarm generation unit 32b determines that the estimated cause alarm generation condition (alarm generation condition C2) is not satisfied (when the determination result of step S14 is “NO”). Done.

When it is determined that the alarm generation condition C3 is satisfied (when the determination result of step S16 is “YES”), the recommended countermeasure alarm generation unit 32c generates a recommended countermeasure alarm A3 (step S17: No. 1). 3 steps). For example, as shown in FIG. 5, the recommended countermeasure alarm generation unit 32c performs a process of generating a recommended countermeasure alarm A3 that instructs the plant operator to “manual operation”, “emergency stop”, “raw material restriction”, and the like. Is called. The recommended countermeasure alarm A3 generated by the recommended countermeasure alarm generation unit 32c is output from the control unit 32 to the display unit 35 and displayed on the display unit 35. When the process of step S17 ends, or when the determination result of step S16 is “NO”, the series of processes shown in FIG. 6 ends.

As described above, in the first embodiment, information is collected from each of the plurality of devices D1 and D2 installed in the plant, and abnormality in the measured value measured by the devices D1 and D2 or abnormality in the devices D1 and D2 itself Is generated, a presumed cause alarm A2 that indicates an estimated abnormal state of the plant, and a recommended countermeasure alarm A3 that indicates a countermeasure that is recommended in order to eliminate the abnormality of the plant. As described above, in the first embodiment, not only the measured value alarm A1 indicating an abnormality such as a measured value but also the estimated cause alarm A2 and the recommended countermeasure alarm A3 are generated. It is possible to drive.

If priority is set for alarms issued by the state monitoring system 1, alarms with high importance can be given priority. For example, the highest priority may be set for the recommended countermeasure alarm A3, the next highest priority may be set for the estimated cause alarm A2, and the lowest priority may be set for the measured value alarm A1. By setting such priority, it is possible to prevent alarm flooding (a situation in which unnecessary alarms frequently occur).

[Second Embodiment]
FIG. 7 is a block diagram showing the overall configuration of the state monitoring system according to the second embodiment of the present invention. As shown in FIG. 7, the state monitoring system 2 of the second embodiment has a configuration in which a state monitoring device 40 is provided instead of the state monitoring device 30 shown in FIG. This state monitoring device 40 stores the alarm generation conditions C11 to C13 in the storage unit 33 instead of the alarm generation conditions C1 to C3, and is provided with an operation state acquisition unit 41 in the control unit 32 as shown in FIG. It is different from the device 30. The state monitoring system 2 of the second embodiment can switch the alarm generation condition for each operation state of the plant.

FIG. 8 is a diagram showing an example of an alarm generation condition used in the second embodiment of the present invention. FIG. 8 is a diagram illustrating an example of the alarm generation condition C11 for generating the measurement value alarm A1. In the alarm generation condition C11 illustrated in FIG. 8, a device ID uniquely assigned to each of the devices D1 and D2 is associated with a threshold value for each plant operating state.

For example, the device ID “XXXXXXX” is associated with 80 [° C.] as a threshold value when the plant state is “in operation”, and 20 [ [° C.]. 50 [° C] is associated with the threshold when the plant state is “switching (switching production brand)”, and 20 [° C] is associated with the threshold when the plant state is “maintenance” It is attached.

Although illustration is omitted, as the alarm generation condition C12 for generating the estimated cause alarm A2, for example, the alarm generation condition C2 shown in FIGS. 4A and 4B is prepared for each operation state of the plant. Similarly, as the alarm generation condition C13 for generating the recommended countermeasure alarm A3, for example, the alarm generation condition C3 shown in FIG. 5 is prepared for each operation state of the plant.

Operation state acquisition unit 41 provided in control unit 32 of state monitoring device 40 acquires the operation state of the plant. For example, the operation state of the plant is acquired based on information output from a control device (not shown) that acquires the operation state of the plant based on an operator instruction input from the operation unit 34 or controls the operation state of the plant. To get. The measured value alarm generation unit 32a, the estimated cause alarm generation unit 32b, and the recommended countermeasure alarm generation unit 32c (see FIG. 2) provided in the control unit 32 of the state monitoring device 40 are the plant acquired by the operation state acquisition unit 41. The alarm generation conditions C11, C12, and C13 used when generating the measurement value alarm A1, the presumed cause alarm A2, and the recommended countermeasure alarm A3 are switched based on the operation state.

The alarm generation processing in the state monitoring system 2 of the second embodiment is performed except that the alarm generation conditions C11, C12, and C13 are switched based on the operation state of the plant acquired by the operation state acquisition unit 41. This is performed in the same manner as in the first embodiment. That is, also in the second embodiment, the alarm generation process is basically performed according to the process of the flowchart shown in FIG. Specifically, in step S12 shown in FIG. 6, the measurement value alarm generation unit 32a determines whether or not the measurement value alarm generation condition (alarm generation condition C11) is satisfied. In step S14, the estimated cause alarm is detected. Whether the occurrence condition (alarm generation condition C12) is satisfied is determined by the presumed cause alarm generation unit 32b. In step S16, it is determined whether the generation condition for the recommended response alarm (alarm generation condition C13) is satisfied. This is determined by the alarm generator 32c. For this reason, in the second embodiment, detailed description of the operation is omitted.

In the second embodiment, as well as the first embodiment, not only the measured value alarm A1 indicating an abnormality such as a measured value but also the estimated cause alarm A2 and the recommended countermeasure alarm A3 are generated. It is possible to operate the plant appropriately even if not. In the second embodiment, the alarm generation condition is switched according to the operation state of the plant, and an alarm according to the state of the plant can be generated. Therefore, improvement in safety can be achieved.

[Third Embodiment]
FIG. 9 is a block diagram showing the overall configuration of the state monitoring system according to the third embodiment of the present invention. As shown in FIG. 9, the state monitoring system 3 of the third embodiment has a configuration in which a state monitoring device 50 is provided instead of the state monitoring device 30 shown in FIG. This state monitoring device 50 stores the alarm generation conditions C21 to C23 in the storage unit 33 instead of the alarm generation conditions C1 to C3, and the change amount calculation unit 51 is provided in the control unit 32 as shown in FIG. It is different from the device 30. The state monitoring system 3 according to the third embodiment generates an alarm according to a time change of information (collected information) collected by the input device 10 and the communication device 20.

FIG. 10 is a diagram showing an example of an alarm generation condition used in the third embodiment of the present invention. FIG. 10 is a diagram illustrating an example of the alarm generation condition C21 for generating the measurement value alarm A1. In the alarm generation condition C21 illustrated in FIG. 10, a device ID uniquely assigned to each of the devices D1 and D2 is associated with a threshold value for the amount of change in the collection information X. For example, the device ID “XXXXXXX” is associated with 10 [° C./s] as a threshold (upper limit threshold) for the amount of change in temperature. Although not shown, the conditions for the collection information X in the alarm generation condition C22 for generating the estimated cause alarm A2 and the alarm generation condition C23 for generating the recommended countermeasure alarm A3 are replaced with the collection information X. A condition based on the change amount of the collected information X is set.

The change amount calculation unit 51 provided in the control unit 32 of the state monitoring device 50 sequentially stores the collected information X to be collected in the storage unit 33 and uses the collected information X stored in the storage unit 33 to collect the collected information X. The amount of change is calculated. In the alarm generation process in the state monitoring system 3 of the third embodiment, the change amount of the collection information X is calculated, and the alarm generation conditions C21, C22, C23 are set according to the time change of the collection information X. Except for generating an alarm using the generation conditions C21, C22, and C23, the process is performed in the same manner as in the first embodiment. That is, also in the third embodiment, the alarm generation process is basically performed according to the process of the flowchart shown in FIG. Specifically, in step S12 shown in FIG. 6, the measurement value alarm generation unit 32a determines whether or not the measurement value alarm generation condition (alarm generation condition C21) is satisfied. In step S14, the estimated cause alarm is detected. Whether or not the occurrence condition (alarm generation condition C22) is satisfied is determined by the presumed cause alarm generation unit 32b. In step S16, it is determined whether or not the generation condition of the recommended countermeasure alarm (alarm generation condition C23) is satisfied. This is determined by the alarm generator 32c. For this reason, in the third embodiment, detailed description of the operation is omitted.

In the third embodiment, as well as the first embodiment, not only the measured value alarm A1 indicating an abnormality such as a measured value, but also the estimated cause alarm A2 and the recommended countermeasure alarm A3 are generated. It is possible to operate the plant appropriately even if not. In the third embodiment, since an alarm is generated according to the time change of the collection information X, for example, at the time of start-up of the plant where the measurement value is likely to change, whether or not the change in the measurement value is within the assumption. Can be easily detected. In the third embodiment, the example in which the time change of the measurement value is considered has been described. However, the time change of the time change of the measurement value may be considered.

[Fourth Embodiment]
FIG. 11 is a block diagram showing the overall configuration of a state monitoring system according to the fourth embodiment of the present invention. As shown in FIG. 11, the state monitoring system 4 according to the fourth embodiment has a configuration in which a state monitoring device 60 is provided instead of the state monitoring device 30 shown in FIG. This state monitoring device 60 stores the alarm generation condition C32 in the storage unit 33 instead of the alarm generation condition C2, and the condition update unit 61 (first update unit) is provided in the control unit 32 as shown in FIG. It is different from the monitoring device 30. The state monitoring system 4 of the fourth embodiment generates the estimated cause alarm A2 depending on whether or not the abnormal state of the plant indicated by the estimated cause alarm A2 matches the actual abnormal state of the plant. The alarm generation condition C32 is dynamically changed.

FIG. 12 is a diagram showing an example of an alarm generation condition used in the fourth embodiment of the present invention. FIG. 12 is a diagram illustrating an example of an alarm generation condition C32 for generating the estimated cause alarm A2. The alarm generation condition C32 illustrated in FIG. 12 includes information indicating a combination of ranks of measurement values at each measurement point (installation position of each device), and a plurality of estimation causes (information indicating locations estimated to be abnormal). ) Is associated with information indicating the probability of. For example, the measurement value of “Measurement Point 1” is No. 1, the measurement value of “Measurement Point 2” is No. 2, and the measurement value of “Measurement Point 3” is No. 3. For the information indicating that the abnormal location is “POS1”, the probability that the abnormal location is “POS2” is “20%”, the probability that the abnormal location is “POS2” is “30%”, and the abnormal location is “POS3”. "Is associated with information indicating that the probability of" 50 "is" 50% ".

The condition update unit 61 provided in the control unit 32 of the state monitoring device 60 is operated by an operator instruction (an abnormal state of the plant indicated by the estimated cause alarm A2 and an abnormal state of the actual plant) input from the operation unit 34. The alarm generation condition C32 stored in the storage unit 33 is updated based on the instruction indicating whether or not they match. For example, when an instruction indicating that the abnormal point of the plant indicated by the presumed cause alarm A2 issued last time is “POS3” and the actual abnormal point of the plant is “POS2” is input from the operation unit 34. 12, the probability that the abnormal location in the alarm generation condition C32 shown in FIG. 12 is “POS3” is reduced (for example, reduced to “20%”), and the probability that the abnormal location is “POS2” is increased (for example, “ To 60% "). When such a change is made, the content of the estimated cause alarm A2 that is issued after the next time is changed.

As described above, in the fourth embodiment, the estimated cause alarm A2 is generated depending on whether the abnormal state of the plant indicated by the estimated cause alarm A2 matches the actual abnormal state of the plant. Since the alarm generation condition C32 is dynamically changed, the estimated cause alarm A2 that is issued can be improved to a more appropriate one. In the fourth embodiment as well as the first embodiment, not only the measured value alarm A1 indicating an abnormality such as a measured value, but also the estimated cause alarm A2 and the recommended countermeasure alarm A3 are generated. It is possible to operate the plant appropriately even if not. Also in the fourth embodiment, an alarm generation process is basically performed according to the process of the flowchart shown in FIG. Specifically, in step S12 shown in FIG. 6, the measurement value alarm generation unit 32a determines whether or not the measurement value alarm generation condition (alarm generation condition C1) is satisfied. In step S14, the estimated cause alarm is detected. Whether the occurrence condition (alarm generation condition C32) is satisfied is determined by the presumed cause alarm generation unit 32b. In step S16, it is determined whether the recommended action alarm generation condition (alarm generation condition C3) is satisfied. This is determined by the alarm generator 32c. For this reason, in the fourth embodiment, detailed description of the operation is omitted.

[Fifth Embodiment]
FIG. 13 is a block diagram showing the overall configuration of a state monitoring system according to the fifth embodiment of the present invention. As shown in FIG. 13, the state monitoring system 5 of the fifth embodiment has a configuration in which a state monitoring device 70 is provided instead of the state monitoring device 30 shown in FIG. 1. The state monitoring device 70 stores the alarm generation condition C43 in the storage unit 33 instead of the alarm generation condition C3, and the condition update unit 71 (second update unit) is provided in the control unit 32 as shown in FIG. It is different from the monitoring device 30. The state monitoring system 5 of the fifth embodiment dynamically sets an alarm generation condition C43 for generating the recommended countermeasure alarm A3 according to whether or not the countermeasure performed based on the recommended countermeasure alarm A3 is appropriate. Change.

FIG. 14 is a diagram showing an example of an alarm generation condition used in the fifth embodiment of the present invention. FIG. 14 is a diagram illustrating an example of an alarm generation condition C43 for generating the recommended countermeasure alarm A3. The alarm generation condition C43 illustrated in FIG. 14 is information indicating a combination of information indicating whether or not the measurement value alarm A1 is generated at each measurement point (installation position of each device) and information indicating whether or not the estimated cause alarm A2 is generated. Are associated with information indicating a plurality of recommended countermeasure probabilities.

The condition update unit 71 provided in the control unit 32 of the state monitoring device 70 is configured to store an operation history H stored in the storage unit 33 (past operations performed on the operation unit 34 based on an operation instruction to the operation unit 34. The recommended countermeasure used for the alarm occurrence condition C43 is extracted from the history). The condition update unit 71 is stored in the storage unit 33 on the basis of an instruction from the operator (an instruction indicating whether or not a countermeasure performed based on the recommended countermeasure alarm A3 is appropriate) input from the operation unit 34. The alarm generation condition C43 is updated. Specifically, similar to the above-described fourth embodiment, a plurality of recommended countermeasure probabilities are changed based on an instruction from the operator input from the operation unit 34. When such a change is made, the content of the recommended countermeasure alarm A3 issued after the next time will be changed.

As described above, in the fifth embodiment, the alarm generation condition C43 for generating the recommended countermeasure alarm A3 is dynamically changed depending on whether or not the countermeasure performed based on the recommended countermeasure alarm A3 is appropriate. Therefore, the recommended countermeasure alarm A3 that is issued can be improved to a more appropriate one. In the fifth embodiment, not only the measurement value alarm A1 indicating an abnormality such as a measurement value, but also the estimated cause alarm A2 and the recommended countermeasure alarm A3 are issued, as in the first embodiment. It is possible to operate the plant appropriately even if not. Also in the fifth embodiment, an alarm generation process is basically performed according to the process of the flowchart shown in FIG. Specifically, in step S12 shown in FIG. 6, the measurement value alarm generation unit 32a determines whether or not the measurement value alarm generation condition (alarm generation condition C1) is satisfied. In step S14, the estimated cause alarm is detected. Whether or not the occurrence condition (alarm generation condition C2) is satisfied is determined by the presumed cause alarm generation unit 32b. In step S16, it is determined whether or not the generation condition for the recommended response alarm (alarm generation condition C43) is satisfied. This is determined by the alarm generator 32c. For this reason, in the fifth embodiment, detailed description of the operation is omitted.

The state monitoring apparatus, system, and method according to some embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and can be freely modified within the scope of the present invention. is there. For example, the first to fifth embodiments described above can be appropriately combined. For example, by combining the fourth and fifth embodiments, an alarm generation condition C32 for generating an estimated cause alarm A2 and an alarm generation condition C43 for generating a recommended countermeasure alarm A3 are both dynamically generated. It may be changed.

In the above embodiment, an example has been described in which the state of the plant is monitored using the measurement results obtained from the device D1 connected to the analog transmission line L and the device D2 connected to the network N. However, the present invention monitors the state of a plant using measurement results obtained from a wireless device connected to a wireless network capable of wireless communication in compliance with wireless communication standards such as ISA100.11a and WirelessHART (registered trademark). It can also be applied to a state monitoring system.

In the above embodiment, the state monitoring devices 30 to 70 are provided with the display unit 35 as a notification device, and an alarm generated by the state monitoring devices 30 to 70 is displayed on the display unit 35 of the state monitoring devices 30 to 70. An example of notifying an operator of an alarm has been described. However, a terminal device operated by the operator is provided separately from the state monitoring devices 30 to 70, and an alarm generated by the state monitoring devices 30 to 70 is displayed on the terminal device to notify the alarm to the operator. Also good.

1-5 Status monitoring system 10 Input device 20 Communication device 30 Status monitoring device 32a Measurement value alarm generation unit 32b Presumed cause alarm generation unit 32c Recommended action alarm generation unit 33 Storage unit 34 Operation unit 35 Display unit 40 Status monitoring device 50 Status monitoring Device 60 Status monitoring device 61 Condition update unit 70 Condition monitoring device 71 Condition update unit A1 Measurement value alarm A2 Estimated cause alarm A3 Recommended action alarm C1 to C3 Alarm generation condition C11 to C13 Alarm generation condition C21 to C23 Alarm generation condition C32, C43 Alarm generation condition D1, D2 device X collection information

Claims (20)

1. With reference to the collection information collected from the equipment installed in the plant and the first alarm generation condition, it is determined whether the collection information satisfies the first alarm generation condition, and the measurement value measured by the equipment is determined. Generating a first alarm indicating an abnormality, or referring to the collected information and generating a first alarm indicating an abnormality of the device itself; and
   Referring to at least one combination of the collected information for the plurality of devices and the first alarm for the plurality of devices and a second alarm generation condition, a combination of at least one of the collected information and the first alarm is A second alarm generation unit that determines whether the second alarm generation condition is satisfied, and generates a second alarm indicating an estimated abnormal state of the plant;
   The collection information for the plurality of devices, the first alarm for the plurality of devices, and a combination of at least one of the plurality of second alarms and a third alarm occurrence condition, and the collection information, the first Determining whether at least one combination of one alarm and the second alarm satisfies the third alarm generation condition, and generating a third alarm indicating a recommended action for solving the abnormality of the plant; A state monitoring device comprising an alarm generation unit.
2. A storage unit for storing the first alarm generation condition, the second alarm generation condition, and the third alarm generation condition;
   The first, second, and third alarm generation units are configured to output the first, second, and third alarms when the first, second, and third alarm generation conditions stored in the storage unit are satisfied. Respectively generate
   The state monitoring apparatus according to claim 1.
3. The first, second, and third alarm generation conditions are prepared for each predetermined operating state of the plant,
   The first, second, and third alarm generation units are the first, second, and second alarm generation conditions that correspond to the operation state of the plant among the first, second, and third alarm generation conditions stored in the storage unit. , Generating the first, second and third alarms when the third alarm generation condition is satisfied,
   The state monitoring apparatus according to claim 2.
4. In the first, second, and third alarm generation conditions, a threshold for the time change of the collected information is defined,
   In the first, second, and third alarm generation units, does the time change of the collected information exceed a threshold for the time change of the collected information defined in the first, second, and third alarm generation conditions? Determine whether or not
   The state monitoring apparatus according to claim 2.
5. An operation unit that receives an operation instruction indicating whether or not the abnormal state of the plant indicated by the second alarm matches the actual abnormal state of the plant;
   The state monitoring apparatus according to claim 2, further comprising: a first update unit that dynamically changes the second alarm generation condition stored in the storage unit in response to the operation instruction.
6. An operation unit to which an operation instruction indicating whether or not the countermeasure taken based on the third alarm is appropriate;
   The state monitoring apparatus according to claim 2, further comprising: a second update unit that dynamically changes the third alarm generation condition stored in the storage unit in response to the operation instruction.
7. The state monitoring apparatus according to claim 1, further comprising a notification unit that notifies the first, second, and third alarms generated by the first, second, and third alarm generation units.
8. The said 1st alarm production | generation part produces | generates the said 1st alarm with reference to the said collection information, without referring to the said 1st alarm generation condition, when the said collection information shows abnormality of the said apparatus itself. The state monitoring apparatus according to 1.
9. A collection device that collects information from the equipment installed in the plant as collection information;
   A state monitoring device,
   Referring to the collected information and the first alarm generation condition, it is determined whether the collected information satisfies the first alarm generation condition, and a first alarm indicating an abnormality in a measured value measured by the device is generated. Or a first alarm generator that refers to the collected information and generates a first alarm indicating an abnormality of the device itself;
   Referring to at least one combination of the collected information for the plurality of devices and the first alarm for the plurality of devices and a second alarm generation condition, a combination of at least one of the collected information and the first alarm is A second alarm generation unit that determines whether the second alarm generation condition is satisfied, and generates a second alarm indicating an estimated abnormal state of the plant;
   The collection information for the plurality of devices, the first alarm for the plurality of devices, and a combination of at least one of the plurality of second alarms and a third alarm occurrence condition, and the collection information, the first Determining whether at least one combination of one alarm and the second alarm satisfies the third alarm generation condition, and generating a third alarm indicating a recommended action for solving the abnormality of the plant; The state monitoring device comprising: an alarm generation unit;
   A notification device for notifying the first, second and third alarms emitted from the state monitoring device;
   Condition monitoring system.
10. The state monitoring system according to claim 9, wherein the notification device is provided in the state monitoring device.
11. The state monitoring device further includes a storage unit that stores the first alarm generation condition, the second alarm generation condition, and the third alarm generation condition,
    The first, second, and third alarm generation units are configured to output the first, second, and third alarms when the first, second, and third alarm generation conditions stored in the storage unit are satisfied. Respectively generate
    The state monitoring system according to claim 9.
12. The first, second, and third alarm generation conditions are prepared for each predetermined operating state of the plant,
    The first, second, and third alarm generation units are the first, second, and second alarm generation conditions that correspond to the operation state of the plant among the first, second, and third alarm generation conditions stored in the storage unit. , Generating the first, second and third alarms when the third alarm generation condition is satisfied,
    The state monitoring system according to claim 11.
13. In the first, second, and third alarm generation conditions, a threshold for the time change of the collected information is defined,
    In the first, second, and third alarm generation units, does the time change of the collected information exceed a threshold for the time change of the collected information defined in the first, second, and third alarm generation conditions? Determine whether or not
    The state monitoring system according to claim 11.
14. The state monitoring device
    An operation unit that receives an operation instruction indicating whether or not the abnormal state of the plant indicated by the second alarm matches the actual abnormal state of the plant;
    The state monitoring system according to claim 11, further comprising: a first update unit that dynamically changes the second alarm generation condition stored in the storage unit in response to the operation instruction.
15. The state monitoring device
    An operation unit to which an operation instruction indicating whether or not the countermeasure taken based on the third alarm is appropriate;
    The state monitoring system according to claim 11, further comprising: a second update unit that dynamically changes the third alarm generation condition stored in the storage unit in response to the operation instruction.
16. The collection information collected from the equipment installed in the plant and the first alarm generation condition are referred to, and it is determined whether the collection information satisfies the first alarm generation condition, and the collection information is the first alarm generation When the condition is satisfied, a first alarm indicating an abnormality of a measured value measured by the device is generated, or when referring to the collected information and the collected information indicates an abnormality of the device itself A first step of generating a first alarm indicating an abnormality of the device itself;
    Referring to at least one combination of the collected information for the plurality of devices and the first alarm for the plurality of devices and a second alarm generation condition, a combination of at least one of the collected information and the first alarm is It is determined whether or not the second alarm generation condition is satisfied, and an abnormal state of the plant that is estimated when a combination of at least one of the collected information and the first alarm satisfies the second alarm generation condition is determined. A second step for generating a second alarm to be indicated;
    The collection information for the plurality of devices, the first alarm for the plurality of devices, and a combination of at least one of the plurality of second alarms and a third alarm occurrence condition, and the collection information, the first It is determined whether at least one combination of one alarm and the second alarm satisfies the third alarm generation condition, and at least one combination of the collected information, the first alarm, and the second alarm is the third alarm And a third step of generating a third alarm indicating a recommended action for solving the abnormality of the plant when the generation condition is satisfied.
17. The first, second, and third alarm generation conditions are prepared for each predetermined operating state of the plant,
    The first step generates the first alarm when the collected information satisfies the first alarm generation condition according to the operation state of the plant,
    The second step generates the second alarm when a combination of at least one of the collected information and the first alarm satisfies the second alarm generation condition according to the operation state of the plant,
    The third step generates the third alarm when at least one combination of the collection information, the first alarm, and the second alarm satisfies the third alarm generation condition according to the operation state of the plant. To
    The state monitoring method according to claim 16.
18. In the first, second, and third alarm generation conditions, a threshold for the time change of the collected information is defined,
    The first step determines whether the time change of the collected information exceeds a threshold value for the time change of the collected information defined in the first alarm generation condition,
    The second step determines whether the time change of the collected information exceeds a threshold value for the time change of the collected information defined in the second alarm generation condition,
    The state monitoring method according to claim 16, wherein the third step determines whether a time change of the collected information exceeds a threshold for the time change of the collected information defined in the third alarm generation condition. .
19. Inputting an operation instruction indicating whether or not the abnormal state of the plant indicated by the second alarm matches the actual abnormal state of the plant;
    The state monitoring method according to claim 16, further comprising: dynamically changing the second alarm generation condition in response to the operation instruction.
20. A step of inputting an operation instruction to the operation unit indicating whether or not a countermeasure taken based on the third alarm is appropriate;
    The state monitoring method according to claim 16, further comprising: dynamically changing the third alarm generation condition in response to the operation instruction.

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