JP2000148235A - Plant monitor and control equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the plant monitor and control equipment which can properly output information relating to monitor information if serious abnormality occurs to a monitored object. SOLUTION: Monitor and control devices (13) are provided which input monitor information sent out of mutually connected monitored devices 21, displays and prints the states of those devices 21 or combinations of the devices 21, and also controls those monitored devices 21. Further, a specific abnormality monitor means 24 monitors serious abnormal states of the monitored devices 21 and a dynamic function allotting means 26 dynamically puts the monitor and control devices 13 in partial charge of a monitoring function according to the information from the specific abnormality monitor means 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring and control device for maintaining a monitoring and control function when a serious abnormal state of a plant occurs.

[0002]

2. Description of the Related Art In recent years, in a plant monitoring and control device such as a water and sewage facility, monitoring information sent from each device of a plant is captured in order to grasp the state of the plant in real time, and a display device such as a CRT displays the monitoring information of the device. An operation state or an operation state of a combination of a plurality of devices is displayed, and the operation state is printed. FIG. 5 is a configuration diagram of a conventional plant monitoring and control device. The plant monitoring and control device fetches a status signal and a numerical signal transmitted from each facility device of the monitoring target 1 such as a plant by the input / output unit 2, and then transmits the status signal and the numerical signal to the status change monitoring unit 3. The status change monitoring unit 3 compares the current status signal or numeric signal with the previous status signal or numeric signal to determine whether there is a status change. When there is a state change, the state change information is sent to the message creating unit 4. The message creating unit 4 creates one or both of the display message information and the print message information based on the state change information, and displays the message information on the display device 6 or prints out from the printing device. When the state change monitoring unit 3 detects an abnormal state, the state change monitoring unit 3 outputs an alarm by the alarm output device 7,
Alert the equipment manager.

[0003]

The display function, printing function and alarm function of the plant monitoring and control apparatus described above can be operated without any problem in a steady state of the plant. When a serious abnormality such as disconnection occurs, the display function, the printing function, and the alarm function may not be fully operated. That is, in a serious abnormal state of the plant, there is a possibility that a state signal or a numerical signal for notifying the abnormal state is frequently generated depending on the type of the abnormality.

[0004] When a large number of state signals and numerical signals indicating an abnormal state are generated from the plant 1, the state change monitoring unit 3 compares the current state signals and numerical signals with the previous state signals and numerical signals. A large amount of state change information is generated and sent to the message creation unit 4, CRT display device 5, printing device 6, and alarm output port 17. 5a is a display unit, 6a
Is an stamp section, and 7a is an alarm output section. Thereafter, in the message creating unit 4, the CRT display device 5, the printing device 6, the official gazette output device 7, and the like, it is necessary to execute a predetermined process based on a large amount of state change information, but the amount of the process is greatly increased. . As a result, the processing capacity of the plant monitoring and control apparatus is consumed for processing the state change information, and the control signals for other function modules, for example, the operation input unit 8 for generating the operator operation information and the monitoring target 1 are generated. There is a problem that hinders processing related to the plant control unit 9 and the like. In other words, the conventional plant monitoring and control device cannot process the status display or status printing in real time when a serious abnormality occurs, and may not be able to provide monitoring information on the abnormal state to the facility manager. There is a problem that processing cannot be performed.

[0005] The present invention has been made in view of the above situation, and it is an object of the present invention to provide a plant monitoring and control apparatus capable of appropriately outputting information related to monitoring information when a serious abnormality occurs in a monitoring target. .

[0006]

A plant monitoring and control apparatus according to the present invention fetches monitoring information sent from a plurality of monitoring target devices connected to each other and displays a state of a combination of these devices. In a plant monitoring and control device including a plurality of monitoring and control devices for controlling these monitored devices, a specific abnormality monitoring means for monitoring a serious abnormal state of the monitored device, and information based on the information from the specific abnormality monitoring device. And a dynamic function sharing means for dynamically assigning a monitoring function to the plurality of monitoring control devices.

That is, in order to solve the above problem, the present invention monitors a status change from monitoring information sent from each equipment to be monitored such as a plant and previous monitoring information or a preset limit value. Status change monitoring means to
Message creation means for adding an appropriate message to the state change information obtained by the state change monitoring means, and creating message information for the state display and state printing,
A display device and a printing device for displaying and printing these status display message information and status printing message information, an alarm output device for notifying a facility manager of an abnormality, and a specific abnormality for detecting that a serious abnormal condition has occurred. A plurality of monitoring control devices provided with a monitoring means and a target function sharing means for appropriately assigning the monitoring control function to the plurality of monitoring control devices based on the specific abnormality information from the specific abnormality monitoring means. Are plant monitoring and control devices connected to each other.

According to the present invention, by taking the above-described means, the occurrence of a serious abnormal condition is constantly monitored by the specific abnormality monitoring means. It anticipates that a state in which the printing function and the alarm function cannot be operated sufficiently will occur, and notifies an abnormal state message. Here, the dynamic function sharing unit that has received the abnormal state message notifies the dynamic function sharing unit of each monitoring control device of the function sharing message in accordance with the preset function sharing for each monitoring control device. .
The dynamic function sharing means of each monitoring and control device that receives the function sharing message degenerates functions other than the functions to be shared in accordance with the message so that the monitoring and gazette functions can be shared and executed for each monitoring and control device, and the printing function can be performed. And executing the operation control function in a shared manner, so that prompt and appropriate treatment can be performed for the abnormality of the monitoring target.

[0009] In the plant monitoring and control apparatus of the present invention, the plurality of monitored devices are connected to each other by a control LAN.

[0010] In the plant monitoring and control apparatus according to the present invention, the dynamic function sharing means may provide any one of a display function, a printing function, an alarm function and an operation control function to the plurality of monitoring and control apparatuses. It is characterized by outputting a stop command to stop.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of a plant monitoring and control device according to the present invention. In the figure, reference numeral 11 denotes a monitoring target including equipment such as various plants, and status signals such as operation / stop and failure, pressure, and flow rate from each equipment such as a pressure gauge, a flow meter, and an electric motor. , And outputs monitoring information consisting of numerical signals such as the number of revolutions and sends it to the input / output device 12. The input / output device 12 sends monitoring information to the monitoring control device 13 by a transmission means such as a control LAN. In addition, the monitoring control device 13 includes a display device 14 such as a CRT, a printing device 15, an alarm output device 16, and the like. As shown in FIG. 1, a plant monitoring and control device often has a plurality of monitoring and control devices 13 in order to improve the operability and visibility of a facility manager.

FIG. 2 is a functional block diagram showing a more detailed configuration of the plant monitoring and control device shown in FIG. In the figure, reference numeral 21 denotes a monitoring target including equipment such as various plants, and monitoring information such as a status signal and a numerical signal of each equipment of the monitoring target 21 is transmitted to an input / output unit 22 via an input / output device.
To send to. The input / output unit 22 fetches monitoring information from the monitoring target 21 and sends it to the state change monitoring unit 23, and sends a control signal to the monitoring target 21. At this time, an identification name for identifying the equipment is added to the monitoring information such as the status signal and the numerical information and transmitted. State change monitoring unit 2
3 receives the monitoring information from the input / output unit 22 and compares it with the previous monitoring information, or compares it with preset upper / lower limit values, etc. The monitoring information is transmitted. Specific abnormality monitoring unit 2
4 receives the monitoring information, compares the serious abnormality information stored in the specific abnormality determination table 25 set in advance with the received monitoring information, and if the monitoring information is determined to be a serious abnormality, the monitoring information is determined. It is sent to the dynamic function allocation control unit 26 as a specific abnormality occurrence message. The dynamic function assignment control unit 26 refers to a preset function assignment table 27 and, based on the function assignment information for each of the plurality of monitoring control devices when a specific abnormality occurs, a message creating unit 28, a printing unit 29, and a display unit. Unit 30, alarm output unit 31, operator unit 32
To stop the function. The printing unit 29, the display unit 30, the alarm output unit 31, the operation input unit 32, and the like that have received this instruction continue or stop their functions according to the instruction. For example, assuming that the function allocation setting table is as shown in FIG. The first dynamic function assignment control unit 26 does nothing to the display unit 30 and the alarm output unit 31 as a function continuation, but the message creation unit 2
8, a function stop command is output to the printing unit 29 and the operation input unit 32, whereby the printing unit 28 and the operator unit 31 stop their respective functions. Stops message creation for. The specific abnormality monitoring unit 24 also sends a specific abnormality message to the specific abnormality monitoring unit 37 of another monitoring and control device in the plant monitoring and control device, and transmits the specific abnormality message from the specific abnormality monitoring unit 37 of the other monitoring and control device. Also, when the specific abnormal message is received, the specific abnormal message is sent to the dynamic function allocation control unit 26. The function allocation setting table 27 may take various forms. One example is, for example, as shown in FIG. 3, when a specific abnormality occurs, a plurality of monitoring control devices in the plant monitoring control device are allocated. Specifies the function to be executed.

If the specific abnormality monitoring unit 24 does not determine that the specific abnormality has occurred, that is, if it is normal monitoring information,
The status change monitoring unit 23 sends the monitoring information to the message creating unit 23
And the message creating section 23 prints a message,
Create message for display, message for alarm output, message for control, etc., and send them to each function division,
The printing function, the display function, the alarm output function, the control function, and the like are all performed by one monitoring and control device. 34
Is a printing device, 35 is a display device, and 36 is an alarm output device.

FIG. 4 shows an operation flow of the specific abnormality monitoring unit 24 and the dynamic function allocation control unit 26 of the present invention. The specific abnormality monitoring unit 24 first refers to the specific abnormality determination table 25 (4
1), other monitoring control device 37 in the plant monitoring control device
, A specific error message is input (42). If the specific abnormality message has not been input (43), monitoring information is input from the state change monitoring unit 23 (44). When the monitoring information is input, it is compared with the information in the specific abnormality determination table to determine whether there is monitoring information of the specific abnormality. If it is determined that the specific abnormality has occurred (45), it is further determined whether the specific abnormality has occurred or terminated. If it has occurred (46), a specific abnormality occurrence message is output to the specific abnormality monitoring unit 37 of another monitoring and control device. (47). The dynamic function assignment control unit 26 receives this and refers to the function assignment setting table 27 (48),
A function stop command is output to each functional unit that needs to stop the function (49). When the specific abnormality monitoring unit inputs the monitoring information and determines that the specific abnormality has ended, the specific abnormality monitoring unit 24 notifies the dynamic function allocation control unit 26 of this (50). If the dynamic function allocation control unit 26 is currently performing the function allocation (51), the dynamic function allocation control unit 26 outputs a specific abnormal end message to the specific abnormality monitoring unit 37 of the other monitoring control device 1 (52), And outputs a command to restart the function (53). When the specific abnormality monitoring unit 24 inputs a specific abnormality message from the specific abnormality monitoring unit 37 of another monitoring control device (54), it is determined whether the specific abnormality has occurred or ended, and the occurrence is determined (55). If the function sharing is not being performed (56), the dynamic column 1 function sharing control unit 26 is notified, and the process proceeds to a function sharing table reference routine (48). If it is a specific abnormal end message (57) and the function is currently being shared, the routine proceeds to the routine of (51). Specific abnormality monitoring unit 24
Repeats the input and determination processing of the specific abnormal message and the monitoring information in this manner (58).

According to the above-described embodiment, when a serious abnormality occurs in the plant, it becomes difficult to print, display, and input the monitoring information. The occurrence of an abnormality is monitored, and the dynamic function allocation control unit 27 and the specific abnormality monitoring unit 3 of another monitoring control device are monitored.
By coordinating with and executing the functions for each of the plurality of monitoring control devices, the load on each monitoring control device is reduced, and when viewed as a whole plant monitoring control device, the display function, the printing function, the alarm output All functions such as functions and operation input functions can be sufficiently performed.

[0016]

As described above, according to the present invention,
When the load condition due to the abnormality of the monitoring target is high, the functions are dynamically shared by multiple monitoring and control devices, and the monitoring function is limited by each monitoring and control device, so that information related to monitoring information is continuously output. At the same time, the input of the control operation can be reliably performed, and the function of the plant monitoring and control device can be sufficiently performed.

[Brief description of the drawings]

FIG. 1 is a structural diagram illustrating an embodiment of a plant monitoring and control device according to the present invention.

FIG. 2 is a functional block diagram illustrating an embodiment of a plant monitoring and control device according to the present invention.

FIG. 3 is a data array diagram of a table used when sharing a monitoring control function.

FIG. 4 is an operation flowchart of the plant monitoring control apparatus shown in FIG. 2;

FIG. 5 is a functional block diagram illustrating a conventional plant monitoring and control device.

[Explanation of symbols]

 21: Monitoring target (plant) 22: Input / output unit 23: State change monitoring unit 24: Specific abnormality monitoring unit 25: Specific abnormality determination table 26: Dynamic function allocation control unit 27: Loro allocation setting table 28: Message creation Unit 29: stamping unit 30: display unit 31: alarm output unit 32: operation input unit 33: plant control unit 34: printing device 35: display device 36: alarm output device 37: specific abnormality monitoring unit of another monitoring control device

Continued on the front page F term (reference) 5C087 AA02 AA10 AA22 AA24 AA32 AA44 BB03 BB74 BB77 DD08 DD21 DD33 EE08 EE16 FF01 FF02 FF20 GG08 GG11 GG21 GG23 GG31 GG51 GG52 GG65 5H209 EA01 BB01 CC01 GG01

Claims (3)

[Claims] 1. A plurality of monitoring control devices for taking in monitoring information transmitted from a plurality of interconnected monitoring target devices, displaying a state of a combination of these devices, and controlling the monitoring target devices. A specific abnormality monitoring means for monitoring a serious abnormality state of the monitored device, and a monitoring function dynamically assigned to the plurality of monitoring control apparatuses based on information from the specific abnormality monitoring means. And a dynamic function assigning means for assigning the function to the plant. 2. The control device according to claim 1, wherein the plurality of monitored devices are a control LAN.
2. The device according to claim 1, wherein the components are connected to each other.
A plant monitoring and control apparatus according to claim 1. 3. The dynamic function sharing means outputs a stop command to the plurality of monitoring and control devices to stop any of a display function, a printing function, an alarm function, and an operation control function. The plant monitoring and control device according to claim 1, wherein