JPH04344599A - Method for confirming action including monitor input section of monitor controller object - Google Patents

Abstract

PURPOSE:To provide a method for confirming an action including the monitor input section of a monitor controller object where it is strictly discriminated whether a failure occurred in a unit which is under the domination of the monitor controller object or due to the monitor controller in itself. CONSTITUTION:In a monitor system which monitors the failure of a unit 2 which is under the domination of a monitor controller from a monitor controller 3, are installed in the monitor controller side 1 a switch circuit 4 for switching between the monitor input side of unit 2 and the test input side, a test signal generating section 5 for generating a test signal, and a signal inserting circuit 6 for inserting the test signal in the test input side of the switch circuit 4.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to a method for checking the operation of a monitored control device including a monitoring input section, and in particular to a method for checking the operation of a monitored control device including a monitoring input section. The present invention relates to an operation confirmation method that includes a monitoring input section of a monitored controlled device that is to be monitored.

0002

[Prior Art] A monitored control device is installed at a station where there is no maintenance personnel, and when a failure occurs in the equipment under the monitored control device, the monitored control device is installed at a remote monitoring and control station via wireless or the like. will be notified.

[0003] Conventional monitored controlled devices are installed to monitor failures in other devices, and are not designed to specifically detect failures in their own devices.

0004

[Problem to be Solved by the Invention] Therefore, when a remote monitored and controlled device reports the occurrence of a fault to the supervisory control station, it is difficult to determine whether the fault occurrence notification is based on the monitored and controlled device itself or whether it is a fault occurrence notification based on the monitored and controlled device itself. The drawback was that humans at the monitoring and control station had to make a comprehensive judgment as to whether the failure notification was based on an abnormality that occurred.

[0005] The present invention aims to solve the above-mentioned drawbacks, and is capable of monitoring the occurrence of a failure in the monitored control device itself, so that when a failure occurrence notification is delivered to the supervisory control station, the monitored control device It is an object of the present invention to provide an operation confirmation method that includes a monitoring input section of a monitored control device that can clearly distinguish whether the input is on subordinate equipment or the monitored control device itself.

[0006]

[Means for Solving the Problems] FIG. 1 is a diagram illustrating the principle of the present invention. In the figure, 1 is a monitored control device, which is monitored for the occurrence of a failure in the monitored control device 1 itself, and 2 is a device, which is under the supervision of the monitored control device 1 and whose failure occurrence is monitored. 3 is a supervisory control device that monitors the occurrence of a failure in the device 2 via the monitored control device 1; 4 is a switch switching circuit that connects the monitoring input side of the device 2 and the monitored control device 1 itself; 5 is a test signal generator, which is used when testing the monitored control device 1 itself for faults; 6 is a signal insertion circuit for switching the switch; When the circuit 4 is switched to the test input side, a pseudo signal generated from the test signal generator 5 is inserted into the switch switching circuit 4 to check whether the monitored control device 1 operates normally. 7 is a detection device. 8 is a processing unit that sequentially sweeps each piece of information appearing in the switch switching circuit 4 to check the location of a fault; 8 is a radio device;
Control signals and data are transmitted and received between the monitor and the monitored control device 1.

[0007]

[Operation] For example, the processing unit 7 detects a state in which a fault has occurred at a position corresponding to Pi of the switch switching circuit 4, and informs the monitoring and control device 3 via the radio 8 that a fault has occurred at a position corresponding to Pi of the equipment 2. The supervisory control device 3 determines the failure. In order to check whether a failure has really occurred at the Pi location of the device 2, the supervisory control device 3 sends a control signal to the monitored control device 1 via the radio 8 to perform an operation confirmation test of the monitored control device 1. Send via. The monitored control device 1 that has received this control signal causes the switch switching circuit 4 to switch to the test input side, and
The test signal generator 5 generates a pseudo signal of the test signal. The pseudo signal generated from the test signal generator 5 is input to the switch changeover circuit 4 via the signal insertion circuit 6. The detection processing unit 7 sweeps the switch switching circuit 4, checks the status of each switch, and transmits status information of each switch of the switch switching circuit 4 from the monitored control device 1 side to the monitoring control device 3 via the radio 8. do. If the status information of each switch sent to the supervisory control device 3 does not notify the Pi location of device 2 that a fault has occurred again, a fault has occurred at the Pi location of device 2, and the fault has occurred at the Pi location of device 2. If the occurrence has been notified, it is determined that the fault has occurred in the monitored control device 1 itself.

[0008]

[Embodiment] FIG. 2 shows the configuration of an embodiment of the present invention.
Reference numerals 1 and 2 correspond to those in FIG. 10 is a monitoring input section, 11 is a communication processing section, 12 is a processing section, 13 is a display section, 14 is a control output section, 15 and 16 are bus drivers,
17 is an address decoder, 18-1 to 18-n are registers, 19-1 to 19-n are detection units, 20-1 to 20-n are resistors, 21 and 22 are timers, 23-1 to 23-n, 24 represents a relay coil, 23A-1 to 23A-n, and 24A represent relay contacts.

When the timers 21 and 22 receive a control signal from the control output section 14, they output the signal shown in FIG. 23A-n is switched from the device 2 side to the self side, that is, the test input side, and the relay contact 24A is switched to the ground side. Therefore, the detection unit 1
9-1 to 19-n, from the L level of -V (hereinafter referred to as L level) to the H level of ground (hereinafter referred to as H level), and then to L level.
Each level change is detected, and this L,
Changes in H and L levels are stored.

Under normal monitoring conditions, relay contact 23A-
1 to 23A-n are connected to the device 2 side as shown in FIG. When a failure occurs on the device 2 side, the relay contact 2-i at the failure point Pi is closed, so the detection unit 19-i detects a level change from L level to H level, The L level and H level are stored in the register 18-i.

The processing unit 12 has registers 18-1 to 18-1.
Addresses are sent to the address decoder 17 via the bus driver 16 in order to collect the data stored in each of the registers 18-1 to 18-n in order, and the data is stored in each register. Collect data. Since the L level and H level are stored in the register 18-i, the processing unit 12 detects that a failure has occurred at the Pi location of the device 2, and sends the signal from the communication processing unit 11 to the supervisory control device 3. Notify the Pi location of device 2 of the occurrence of a failure.

The supervisory control device 3 receives a notification from the monitored control device 1 that a fault has occurred at the Pi location of the equipment 2, and sends a self-diagnosis message to the monitored control device 1 in order to confirm the authenticity of the notified fault. Send control signals. The self-diagnosis control signal received via the communication processing unit 11 and output from the control output unit 14 starts the timers 21 and 22, and the timer output shown in FIG. 3 activates the relay coils 23-1 to 23-n. energize. As a result, relay contact 23A-1 or 2
3A-n is grounded via the relay contact 24A, so the detection units 19-1 to 19-n are at L level and H level.
The level change between the L level and the L level is detected, and the L, H, and L level changes are respectively stored in the correspondingly provided registers 18-1.

The processing unit 12 has registers 18-1 to 18-1.
-n in order, the data stored in each register is read out, and compared with the normal operation L, H, L pattern. If the data in the L, H, L pattern is stored in the register 18-i, the monitoring input unit 10 is operating normally, and the processing unit 12 determines that a fault has occurred at the Pi location of the device 2. The judgment is made and displayed on the display section 13, and the monitoring and control device 3 is notified of this via the communication processing section 11. A control signal for disconnecting the Pi portion of the return device 2 is sent from the monitoring control device 3 to the monitored and controlled device 1 side.

Normal operation L, H, L in register 18-i.
When data different from the pattern is stored, the processing unit 12 determines that a failure has occurred on the monitoring input unit 10 side, and notifies the monitoring and control device 3 of this fact. In this way, timer 21,
22 and relay contacts 23A-1 to 23A-n
and 24A, registers 18-1 to 18-
By comparing it with the pattern during normal operation stored in n, it is possible to distinguish whether the failure notified to the supervisory control device 3 is based on the occurrence of a failure on the device 2 side or the failure occurrence on the monitored control device 1 side. Can be done.

In the above description, the processing unit 12 on the side of the monitored control device 1 determines the location of the failure Pi and determines whether the failure has occurred based on a failure on the equipment 2 side or the monitored control device 1 side. As explained above, register 18-1
All the data stored in 18-n to 18-n may be sent to the monitoring and control device 3 side, and the above judgment may be made on the monitoring and control device 3 side.

[0016] Also, relay coils 23-1 to 23-n
and 24, a method of sequentially energizing as shown in FIG.
In other words, when the register 18-1 is specified in correspondence with the address output from the processing unit 12, the relay coil 23-1
and 24 to store the data of the operation pattern in the register 18-1, and determine from the stored data of the operation pattern whether the failure is based on a failure on the device 2 side or a failure on the monitoring input unit 10 side. However, when the register 18-2 is designated next, the relay coils 23-2 and 24 may be energized to check the location where the fault has occurred and the side where the fault has occurred.

[0017]

[Effects of the Invention] As explained above, according to the present invention, when a failure occurs, it is possible to clearly distinguish whether the failure is due to a failure on the equipment side under the monitored control device or a failure due to the occurrence of a failure in the monitored control device itself. becomes. Therefore, appropriate measures can be taken quickly without having to go to the location where the monitored control device is installed, improving the reliability of the monitoring system.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the present invention.

FIG. 2 shows the configuration of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of an example output of a timer.

FIG. 4 is an explanatory diagram of output of another embodiment of the timer.

[Explanation of symbols]

1 Monitored control device 2 Equipment 3 Monitoring control device 4 Switch switching circuit 5 Test signal generation section 6 Signal insertion circuit 7 Detection processing section 8 Radio equipment

Claims (1)

[Claims] Claim 1: In a monitoring system in which a monitoring control device (3) monitors a failure in a device (2) under a remotely located monitored control device (1), the device (2) under the monitored control device (1) is monitored. A test that generates a test signal based on a switch switching circuit (4) that switches between the monitoring input side of the monitor and the test input side of the monitored control device (1), and a control signal sent from the monitoring and control device (3) side. A signal generation section (5) and a signal insertion circuit (6) that inserts the test signal generated by the test signal generation section (5) into the test input side of the switch changeover circuit (4).
is provided on the monitored control device (1) side, and the monitored control device (
1) An operation confirmation method including a monitoring input section of a monitored control device, characterized in that it also monitors its own failures.