JPH0266606A - Monitor control system - Google Patents

Abstract

PURPOSE:To suppress the deterioration of the working ratio and the increase of danger against occurrence of serious troubles and to facilitate the periodical checks by producing periodically the check requests based on the time information on a time counting device, carrying out the check of a monitor control subject when the check request is produced, and displaying the check result. CONSTITUTION:The reference time like the time elapsed from the latest checking time point of a monitor controller 1, the cumulative operation time, etc., are calculated for the periodical check. When this calculated time reaches a check requesting level, the check request messages are sent to an alarm device 5 and a display device 6. Then the permission is received from an operator for the automatic check and a program is executed for check of the controller 1. Then it is decided whether the check result is normal or not, and the information showing the normal end of the check is displayed on the device 6. If the abnormality is detected in the check, a signal showing occurrence of the abnormality is sent to the device 5 for generation of an alarm. At the same time, the abnormality is also displayed on the device 6.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a supervisory control system that monitors and controls a supervisory control target and inspects a supervisory control target that requires periodic inspection. It is related to.

(Conventional technology) Periodic manual inspection of monitoring and control equipment requires a considerable amount of time and effort, and is also unreliable due to the risk of omissions. A reporting system has been developed.

FIG. 4 is a block diagram showing a schematic configuration of this type of conventional supervisory control system. In the same figure, supervisory control equipment 1
For example, if it is an electric motor for driving an elevator that repeatedly starts and stops, the timer 4 detects the inspection interval and cumulative inspection time, and when the value reaches the set value,
The alarm device 5 generates an alarm, or the monitoring device 3
By sending a failure signal to the machine, the failure signal is displayed on the display 6.

(Problems to be Solved by the Invention) In the conventional supervisory control system described above, when an inspection request is output, the supervisory control device 1 is separated from the operation of the system and inspection work is performed. For this reason, there was a problem that it was very time-consuming and at the same time, the operating rate of the system decreased.

On the other hand, if you set a longer inspection cycle to reduce the effort,
This time, there was a problem in that the discovery of a malfunction in the monitoring and control equipment 1 was delayed, increasing the risk of causing a serious malfunction.

This invention was made to solve the above-mentioned problems, and provides a monitoring and control system that can easily perform periodic inspections while suppressing a decrease in system availability and an increase in the risk of serious failures. The purpose is to

[Structure of the invention]

(Means for Solving the Problems) As shown in FIG. 1, the supervisory control system according to the present invention includes a clock device 11 having a date management function, and periodic monitoring based on time information of the clock device 11. Controlled object 13
an inspection request means 12 for generating an inspection request, an inspection means 14 for inspecting the monitoring and control object 13 when the inspection request means 12 generates an inspection request;
The present invention is characterized by comprising a display means 15 for displaying the inspection results of No. 4.

(Function) In this invention, when the periodic inspection is due, the inspection is carried out without human intervention, and the inspection results are displayed, so there is no risk of a decrease in the system operating rate or the occurrence of a serious failure. It becomes possible to perform inspections without any increase.

(Embodiment) FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 4 indicate the same elements. Here, it is assumed that the supervisory control device 1 is an electric motor that requires periodic inspection service. The status and instrumentation information of the monitoring and control equipment 1 are transmitted to the CPU 10 via the monitoring device 3. In addition, the monitoring and control equipment 1
A signal for driving and controlling the CPU 10 is outputted from the CPU 10, and is given to the monitoring and control equipment 1 via the control device 2. Therefore,
It can be said that the control device 2 and the monitoring device 3 are under the supervision of the CPU10. The CPU 10 is equipped with a real timer 7 as a timekeeping device having a date management function, and current time information is sent to the CPU 10 every moment. Further, the CPU 10 is attached with a storage device 8 in which inspection intervals for the monitoring and control equipment 1, test programs for inspection, etc. are stored. This storage device 8 was originally provided in conventional devices, and as long as the capacity was large enough,
The functions of this embodiment can be provided in addition to the functions provided to the conventional device.

Furthermore, in addition to the alarm device 5, this CPU10 has a display 6 that notifies the operator of requests for inspection, details of failures, etc.
and an input device 9 through which an operator inputs a signal for permitting automatic inspection.

The operation of this embodiment configured as described above is performed by the CPU10.
The processing procedure will be explained below according to the flowchart of FIG. 3.

It is assumed that the periodic inspection task is activated at appropriate intervals. This period is determined by the accuracy of periodic inspection, but once a day is considered to be sufficient for general elevator drive motors.

Now, when the task is started in step 101, it is determined in step 102 whether the periodic inspection process has been completed or not.
If it is determined that the process has ended, the process ends in step 113, but
If it is determined that the process has not been completed, in step 103, the time that serves as a reference for regular inspections, such as the elapsed time from the most recent inspection time for the monitoring and control equipment l, or the cumulative operating time, is calculated. Then, in step 104, it is determined whether or not the calculated value is large enough to require inspection, and if the calculated value is not large enough to require inspection, then in step 112, the inspection target is changed to another monitoring and control device 1. If the size has reached a level that requires inspection, a message requesting inspection is outputted to the alarm device 5 and display 6 in step 105.

Next, in step 106, the operator's permission to carry out the automatic inspection is accepted, and in step 107, it is determined whether permission has been obtained, and if permission is not obtained, the process of step 106 is performed. return. Therefore, step 1
In steps 06 and 107, the process continues to wait until permission is obtained, and when permission is obtained, the process proceeds to step 108.

Next, in step 108, a program for inspecting the monitoring and control equipment 1 is executed. Since the contents of this program differ depending on the type of monitoring and control equipment 1, it is set as a subroutine. Here, the methods generally adopted to diagnose electric motors include analysis of noise and vibration during operation, calculation of loss by measuring input power, temperature rise, etc., and analysis of transient characteristics such as starting and stopping. However, depending on the usage status and environment of the supervisory control device 1, a test method considered to be effective is selected, or a combination thereof is used to inspect the supervisory control device 1.

Next, in step 109, it is determined whether the inspection result in step 108 is normal or not. If there is no abnormality in the judgment result, proceed to step 110, and if abnormality is recognized, proceed to step 11.
Conditional branching is performed such that each step advances to step 1. In step 110, information indicating that the inspection has been completed normally is displayed on the display 6. Further, in step 111, a signal indicating that an abnormality has been found as a result of the inspection is given to the alarm device 5 to generate an alarm, and is also given to the display 6 to indicate the fact.

Next, in step 112, the processing from step 103 onwards is executed for another monitoring and control device 1. Note that the processing of steps 103 to 105 shown in this flowchart is performed in steps 106 to 10 by the inspection requesting means 12 shown in FIG.
8 is applied to the inspection means 14 in FIG.
The processes 111 correspond to the display means 15 in FIG. 1, respectively.

Thus, according to this embodiment, the operator is automatically notified of the periodic inspection time for the electric motor as the monitoring and control equipment 1, and the inspection is automatically performed with the operator's permission, thereby reducing wear on the electric motor. Failures such as overheating and overheating can be detected early, and there is no need to sacrifice system availability or incur large costs in order to discover them.

Although the above embodiment describes the case where the supervisory control device 1 is an electric motor, the present invention is not limited to this, and the present invention is not limited to this. It is also applicable to

In addition, in the above embodiment, a detailed investigation is carried out only when an abnormality is discovered by the inspection program, but in particular, when reliability is required, it is necessary to carry out a detailed investigation once every several times during regular inspections. It is also possible to carry out periodic manual inspections for some parts and perform automatic inspections for the rest. Even in this case, the period of manual inspection can be extended, so that the same labor-saving effect as described above can be obtained.

On the other hand, if an expert system fault diagnosis program, which has been put into practical use in recent years, is adopted as an inspection program, the accuracy of automatic inspection can be further improved.

On the other hand, if the monitoring and control equipment is stopped for a short period of time and the system is not affected much and the inspection program is simple, a method of automatically inspecting the system without obtaining permission from the operator may be considered.

In this case, the administrator does not need to be conscious of periodic inspections.

〔Effect of the invention〕

As is clear from the above explanation, according to this invention,
When it is time for periodic inspections, inspections are carried out without human intervention, and the inspection results are displayed, making it possible to carry out inspections without reducing system availability or increasing the risk of serious failures. It has the effect of becoming.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of this invention, FIG. 2 is a block diagram showing the configuration of an embodiment of this invention, FIG. 3 is a flowchart for explaining the operation of the embodiment, and FIG. FIG. 1 is a block diagram showing the configuration of a conventional monitoring and control system. DESCRIPTION OF SYMBOLS 1... Monitoring control equipment, 2... Control device, 3... Monitoring device, 5... Alarm device, 6... Display device, 7...
Real timer, 8... Storage device, 9... Input device, 1
0...CPU. 11... Clock device, 12... Inspection requesting means, 14.
... Inspection means, 15... Display means. Prefecture 1 Map Map 2 Map 3

Claims (1)

[Claims] a timekeeping device having a date management function; an inspection requesting means for periodically issuing an inspection request for a monitoring and control object based on the time information of the timing device; What is claimed is: 1. A supervisory control system comprising: an inspection means for carrying out an inspection; and a display means for displaying the inspection results of the inspection means.