JPH04149601A - Monitoring control equipment for plant facilities - Google Patents

Abstract

PURPOSE:To prevent such accidents including the breakdown of equipments, the discontinuation of the plant operation, etc., due to the continuous operation of equipments by judging totally the overall state of the plant facilities at initial application of those equipments. CONSTITUTION:A process data processing circuit 11 is provided to compute and output the information on the plant facilities 16 after inputting and storing them together with an abnormality detecting function 12 which inputs the output signal and the alarm signals received from the circuit 11 and the facilities 16 respectively, a CRT display device 13 which displays the output of the function 12, an automatic control function 14 which decides previously an operation instruction based on the operating state of the facilities 16, and a control output function 15 which outputs an operation control command to the facilities 16 based on the outputs received from both functions 12 and 14. In such constitution, the abnormal state is monitored for an initially applied equipment based on the overall state of the facilities 16 after the initial application of the equipment. If an abnormal state is decided, a cut-off command is issued so that the actual abnormality of the equipment can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a monitoring and control device for plant equipment such as water and sewage plants, buildings, roads, and tunnels.

(Prior art) As a process monitoring and control system that monitors and controls the equipment status of various plants such as water and sewage plants, buildings, roads, tunnels, etc., conventionally, the system captures the status of various equipment and displays the contents on a CRT. The automatic control function sends equipment turn-on and shut-off commands to the control output function to control the plant equipment, and the abnormality detection function determines the abnormal state of the equipment from the status data of various equipment and displays the details of the abnormality on the CRT. Based on the contents, operators control the plant.

(Plot II) However, in conventional process monitoring and control systems, when the equipment is initially turned on, the equipment operates normally, but it is not determined whether or not there is an abnormality in the equipment as a whole. Despite this, if the system continued to operate as it was, there was a possibility that it would not only damage the equipment but also cause an accident such as a shutdown of the plant equipment.

In view of the above-mentioned circumstances, the present invention monitors the abnormal state of the installed equipment from the state of the entire equipment related to the equipment after the initial activation of the equipment, issues a shut-off command in case of abnormality, and prevents a real equipment abnormality from occurring. The purpose is to provide a monitoring and control device for plant equipment.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a process data processing circuit that inputs, stores, calculates, and outputs information on plant equipment, and an output signal from the process data processing circuit and an output signal from the plant equipment. An abnormality detection function that detects abnormal conditions by inputting alarm signals, a CRT display device that displays the output of this abnormality detection function, an automatic control function that predetermines operation instructions depending on the operating status of plant equipment, and this automatic This is a system for monitoring and controlling plant equipment, which is equipped with a control output function that outputs operation control commands to plant equipment based on the output from the control function and the output from the abnormality detection function.

(Function) When an abnormality occurs in the equipment to be controlled, it is detected and displayed, the details of the abnormality are output to the printer, and the equipment to be controlled is cut off and output based on the abnormality detected by the abnormality detection section.

(Example) Next, an example of the present invention will be described. Fig. 1 shows a process data processing circuit 11 that inputs, stores, calculates, and outputs information on plant installation MLB, and detects abnormal conditions by inputting output signals from the process data processing circuit 11 and alarm signals from the plant installation 16. an abnormality detection function 12 that displays the output of the abnormality detection function 12, a CR7 display device 13 that displays the output of the abnormality detection function 12, an automatic control function 14 that determines operation instructions in advance according to the operating status of the plant equipment 1B, and an output from the automatic control function 14 and The plant equipment 1 is detected by the output from the abnormality detection function 12.
6 shows a plant equipment monitoring and control device comprising a control output function 15 for outputting operation control commands. That is, in an equipment monitoring system that manages a plant, there is an abnormality detection function 12 that detects when an abnormality occurs in the equipment to be controlled and outputs the abnormality content to a display unit or printer, and an abnormality content detected by the abnormality detection function 12. This equipment abnormality detection device is characterized by having a control output function 15 that shuts off the equipment to be controlled based on the following.

Figure 2 shows a configuration showing a specific example of the abnormality detection function.
(Central processing unit) 21, memory 22, and clock device 2
3, an auxiliary storage device 24, a process input/output device 25, a transmission device F2B, a printer device 27, a CRT display device g, and a key input keyboard 29, and is equipped with equipment supplied from the plant. Abnormalities are detected based on status data, and control output is automatically performed if an abnormality occurs.

The process input/output device 25 is equipped with various interfaces, etc., and takes in the equipment status output from the plant and sends it to the CPU 21, or conversely outputs the control output from the CPU 21 to the plant.
21 and each part of the plant.

Further, the transmission device 2B includes various communication interfaces and performs communication between the CPU 21 and each part of the plant.

Further, the memory 22 stores an abnormality detection program, other programs, equipment status data, etc., and reads them from the CPU 21 and outputs the contents in response to a write command.

In addition, the clock device 23 measures the time and sends this timing result to C.
It is supplied to PU21.

Further, the auxiliary storage device 24 stores various data for detecting abnormalities, and reads and writes data according to input/output commands from the CPU 21.

In this case, the abnormality detection data stored in the auxiliary storage device 24 is stored in the 21st
The type of data (data that expresses the status of equipment with 1 and 0) or numerical data (data such as current, voltage, etc.), and the judgment data for determining whether the equipment is abnormal or not, corresponding to the type. (In the case of numerical values, two types of upper and lower limit data can be stored) are secured for a maximum of n pieces for N devices.

Further, when the printer device 27 is supplied with the equipment status, abnormality details, etc. from the CPU 21, it prints out the information in a preset format.

Further, the CRT display device 28 receives the equipment status from the CPU 21.
When abnormal contents etc. are supplied, the contents are displayed on the screen.

Further, the key input keyboard 29 supplies various operation commands to the CPU 21 when inputted.

Further, the CPU 21 executes various processes based on the abnormality determination program and other programs stored in the memory 22.

Next, each operation of this embodiment will be explained with reference to the flowcharts shown in FIGS. 3 and 4.

First, step 101 starts with automatic control and individual operation of equipment.
A device input command is issued. The response result of the control output is sent to the printer device 27 or CR in step 102.
It is output to the T display device 23. The response result is judged in step 103, and if the response is normal, m seconds is set in the monitoring timer in step 104. If there is an abnormal response, the monitoring timer is restarted in step 105.

Next, in step 10B, it is determined whether the previously set monitoring timer is operating, and if it is not operating, the process ends.

If it is in operation, the status flag is cleared in step 107, and abnormality detection processing is performed in step 108.

If the result of the abnormality detection process is that there is an abnormality, step 110
The contents of the abnormality are displayed on the printer device 27 and CRT display W2.
Output to 8. Next, in step 110, a cutoff output is performed for the equipment that was previously turned on. In this case, since monitoring is not necessary, the monitoring timer is cleared and the process returns to step 112 and then step 106.

If there is no abnormality as a result of the abnormality detection process, the monitoring timer is counted down. This monitoring timer is a timer for monitoring the state of the equipment for only m seconds after the equipment is turned on. Step 113 After that, the process returns to step 106 and is repeated until an abnormality occurs or the monitoring timer reaches m seconds.

Next, from step 108, abnormality detection processing is performed.

First, abnormality detection data corresponding to the input device is retrieved from the auxiliary storage device 4 in step 120, and the retrieved data is used to determine whether the equipment is present or not.If the equipment is not present, the process proceeds to step 125. If there is equipment, whether the equipment is the binary value shown in step 122 or
It is determined whether the value is the value shown in step 12B. In the case of binary equipment, whether the equipment status is abnormal or not is checked against the abnormality detection data in step 123. If they match, the status flag is set to abnormal in step 124, and if they do not match, it is normal and the process proceeds to step 125. In addition, in the case of numerical equipment, the equipment data and the abnormality detection data (1) and the abnormality detection data (2) are compared in step 127, and the abnormality detection data (1) ≦ equipment data ≦ abnormality detection data (
Anything other than 2) is considered abnormal, and the status flag is set as abnormal in step 128.

Next, the process proceeds to step 125, and it is determined whether all n pieces of equipment have been checked, and if there is any unprocessed equipment, the process returns to step 120, and the abnormality detection process is continued. Once all the equipment has been checked, the process ends and returns to step 2 109.

As a result, in this embodiment, it is possible to perform abnormality monitoring after the equipment is initially turned on, and to automatically shut off the turned-on equipment when an abnormality is detected.

[Effects of the Invention] According to the present invention, by comprehensively determining the status of the entire equipment related to the equipment after the equipment is initially turned on, abnormal conditions are detected and the equipment that has been turned on is shut off, so that operation can continue. This makes it possible to prevent accidents such as damage to equipment and shutdown of the plant.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of a monitoring m'ai device showing an embodiment of the present invention, Fig. 2 is an equipment configuration diagram showing an abnormality detection function, and Fig. 3 is a flowchart explanation showing the operation of abnormality determination and control output processing. 4 is a flowchart explanatory diagram showing the operation of the abnormality detection process, and FIG. 5 is an explanatory diagram showing abnormality detection data stored in the auxiliary storage device. 11... Process data processing circuit 12... Abnormality detection function 13... CRT display device 14 Automatic control function 15... Control output function

Claims (1)

[Claims] a process data processing circuit that inputs, stores, calculates, and outputs information about plant equipment; an abnormality detection function that receives an output signal from the process data processing circuit and an alarm signal from the plant equipment to detect an abnormal state; A CRT display device that displays the output of this abnormality detection function, an automatic control function that predetermines operation instructions according to the operating state of the plant equipment, and an output from this automatic control function and an output from the abnormality detection function that A monitoring and control device for plant equipment, which is equipped with a control output function that outputs operation control commands to plant equipment.