JP2003015733A - Remote monitor control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote monitor control system capable of improving operability by reducing the labor of an operator due to the delay of a response since the switch operation of the operator until the corresponding operation of a display unit. SOLUTION: A master station transmits a switch operation signal to a slave station according to the acceptance of a switch operation SW by an operator, and the salve station controls equipment 4 according to the switch operation signal, and the salve station transmits the action completion signal of the equipment to the master station, and the master station performs the action completion display of the equipment at a lamp L according to the action completion signal. In this case, this system is provided with an operation supporting agent 6 for displaying the operation completion signal at the lamp L according to the acceptance of the switch operation signal, and for stopping the display according to the reception of the action completion signal. The operation supporting agent performs the operation completion corresponding to the opening and closing operation of the equipment by the display switching processing of the display unit, and performs the operation completion corresponding to the inching operation of the equipment by the additional display processing of the target manipulated variables of the display unit, and performs the operation completion display and the action completion display at the same display unit or different display units, and performs warning generation processing to the switch operation when any action completion signal is not received within a fixed time since the operation completion display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring and control system, and more particularly to a human interface for assisting an operator to remotely operate a device.

[0002]

2. Description of the Related Art In a remote monitoring control system, a control station (master station) and a controlled station (slave station) are connected by a communication network such as a leased line or a public line, and the status and measurement information of equipment on the slave station side are connected. Can be transmitted to the master station side as monitoring information, the master station side can transmit control information obtained based on the monitoring information to the slave station side, and the slave station side can control the device and the like according to the control information.

In order to control equipment and the like, software processing of a supervisory control computer and a host computer on the master station side is performed, and an operator operates a switch on a control desk while monitoring a display device or a screen panel. There is.

FIG. 4 shows an example of a processing system for remote operation by an operator. The control console 1 is provided as an input / output means of the remote control information processing unit 2 of the monitor control computer of the master station,
The operation signal of the switch SW (switch mechanism or switch button on the screen of the display device) is encoded by the information processing unit 2 and transmitted to the slave station side.

On the slave station side, the remote control information processing unit 3 of a control device such as a PLC (Programmable Logic Controller) decodes the operation signal and outputs it as an operation output of the device 4. The operation completion signal of the device 4 by this operation output is
The information processing unit 3 performs an encoding process and transmits it to the master station side.

On the master station side, the operation signal is decoded by the information processing unit 2, and the display switching control of the display (operation display lamp L or operation amount display meter M) or the display switching control on those display device screens is performed. Is done.

The remote operation mode of equipment and the like includes opening / closing (switching on / off and switching on / off) applied to equipment such as circuit breakers, and inching (opening degree) applied to electric valves and hydraulic equipment. Adjustment and stroke adjustment) operation.

[0008]

In the remote operation by the operator, it takes a long time (response time) until the lamp L or the meter M is displayed in response to the operation of the switch SW, which causes a problem that the operability of the operator is significantly deteriorated. is there.

This response time is, for example, in the processing system example of FIG. 4, (a) operation input acceptance and encoding processing time in the information processing unit 2, (b) downlink transmission time, and (c) information processing unit 3 Decoding process and operation output time, (d) Device operation input acceptance and encoding process time in the information processing unit 3, (e) Upstream transmission time, (f) Decoding process and operation in the information processing unit 2 It is the total value of the display output time.

This response time depends on the difference in the configuration of the distant monitoring and control system (the leased line service, the high speed and large capacity ATM megalink service, the difference in various communication services such as ISDN, the difference in the communication method, the operating speed of the information processing section. , The amount of information processing, the number of monitoring control devices, etc.), but as shown in FIG.
This is much longer than when using the to operate the equipment directly.

Generally, the above response time is described in the system specifications as "device operation response time is XX seconds", but when it exceeds 3 seconds, the operator is informed of switch operation. The display operation of the vessel is not done for a long time, which causes mental stress.

Further, even if the response time is less than 3 seconds, the switches are repeatedly operated while visually observing the instruments in the inching operation, and the instruments are displayed unless the master station receives the operation completion signal. Since there is no change, the operation burden on the operator who waits for this change becomes very large.

An object of the present invention is to provide a distant monitoring control system in which the burden on the operator due to the response delay from the switch operation by the operator to the response of the display is reduced and the operability is improved.

[0014]

As shown in FIG. 6A, in the conventional remote control system, the operation information of the operator is transmitted from the master station to the slave station, and the slave station controls the equipment. Since the operation completion signal of the device is transmitted from the slave station to the master station and the completion of the operation is displayed on the display unit, the long waiting time from the start of the operation to the completion of the operation deteriorates the operability.

In order to solve the above problems, the present invention, as shown in FIG. 6 (b), displays the completion of the operation without waiting for the actual operation (completion of operation) of the equipment in response to the operation input of the operator. The processing is performed, the operation completion display is stopped by the operation completion signal of the device, and the alarm generation processing is performed when the operation is not completed within a certain time. The following features are provided.

(1) The master station transmits a switch operation signal to the slave station upon receipt of a switch operation by an operator, the slave station controls the equipment in accordance with the switch operation signal, and the slave station sends the operation completion signal of the equipment to the master station. In the remote monitoring and control system having a human interface for transmitting to the station, and the master station displaying the operation completion of the device on the display with the operation completion signal, the master station
It is characterized by further comprising an operation support agent for displaying and outputting an operation completion signal when the switch operation signal is received, and for stopping the display when the operation completion signal is received.

(2) The operation support agent performs the operation completion by the display switching process of the display unit for the opening / closing operation of the device, and the operation completion is the additional display process of the target motion amount on the display unit for the inching operation of the device. It is characterized by performing.

(3) The operation support agent displays the operation completion display and the operation completion display on the same display or on another display.

(4) The operation support agent performs an alarm generation process for a switch operation when the operation completion signal is not received within a fixed time from the operation completion display.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a processing diagram of a remote operation showing an embodiment of the present invention. The difference between this figure and FIG. 4 is that an operation support agent is provided on the master station side.

The operation support agent 6 includes an information processing unit 2
Is added with a software configuration, and has the processing procedure shown in FIG.

(1) The operation input of the switch SW of the control console 1 is accepted (S1). At this reception, the operation input is stored and held, and the operation completion output for displaying the operation completion of the lamp L is generated (S2). For example, when the lamp L displays the "OFF" state of the device in green and the "ON" state in red, the lamp L is changed from the green display to the red flicker display when the "ON" operation input of the device is received.

As a result, the operator can confirm that the operation input has been accepted almost at the same time as the operation of the switch SW, can perform the operation without being aware of the delay of the response time, and give the operation anxiety. Nor.

(2) At the same time, an operation agent signal is transmitted to the slave station side (S3). The information processing unit 3 of the slave station that receives this signal generates an operation output of the device 4 and controls the device 4 as in the conventional case.

(3) When the operation completion signal of the device 4 is transmitted from the slave station (S4), the stored operation completion output is reset (S5). By this processing, the operation completion signal to the lamp L is cut off and the flicker display of the lamp L is stopped.

(4) At the same time, an operation completion signal is output (S
6) Switch the display state of the lamp L. (1) above
In the example, the lamp L is switched to red display.

As a result, the operator can confirm that the operation has been performed reliably by switching the display state of the lamp L.

(5) When the time from the reception of the operation input to the reception of the operation completion signal of the device exceeds the time set in advance by the timer (for example, 3 seconds that does not cause the operator to feel uneasy) (S7), the operation fails (S8), the buzzer BZ or the like provided in the control console 1 is operated to notify the operator of the operation failure.

As a result, the operator can confirm the operation failure and can perform a reliable operation by re-operating the switch SW or checking the information transmission system.

FIG. 3 is a processing system diagram of a remote operation showing another embodiment of the present invention, and is a case of an operation support agent for performing an inching operation of a device.

In this case, the processing procedure by the operation support agent 6 displays the completion of the operation on the display at the same time when the switch operation is received, as in FIG. Since the stroke amount) display meter M is used, the operation amount display processing has the following procedure.

(1) When the operation input of the switch SW of the control console 1 is accepted, the operation target operation amount SPV is displayed with a display color difference or flicker so that it can be distinguished from the current operation amount PV. To do. With this double display of the movement amount, the operator visually confirms the target movement amount SPV, confirms the operation, and ends the operation.

(2) At the same time, the SPV agent signal is transmitted to the slave station side. The information processing unit 3 of the slave station that receives this signal outputs the operation output MV that matches the operation amount PV of the device 4 with the target operation amount SPV as in the conventional case, and controls the device 4.

(3) Current operation amount PV of the device 4 from the slave station
Is transmitted, this operation amount PV and target operation amount S
It is checked whether the deviation absolute value of PV is smaller than the error setting value α, and when it is smaller than the error setting value α, the operation completion process is performed. In this process, the target operation amount SPV is displayed on the display.
Is stopped and only the movement amount PV is displayed.

(4) When the operation is not completed by the above check from the time when the operation input is received until the time set in advance by the timer, an operation failure alarm signal is generated and the buzzer BZ or the like provided in the control console 1 is operated. And notify the operator of the operation failure.

Also in the present embodiment, the operator can confirm that the operation input is accepted almost at the same time as the operation of the switch SW, and the operation can be performed without being aware of the delay of the response time, and the anxiety may be given. Nor. Further, the operator can confirm that the operation has been performed reliably by displaying the target movement amount SPV on the meter M as well. Also, the operator can confirm the operation failure and switch S
Reliable operation can be performed by handling W again and checking the information transmission system.

In the embodiment, the case of displaying the operation completion and the operation completion on the same display is shown.
The same operation and effect can be obtained by displaying these on another display. Further, although the alarm generation shows the case where the alarm sound is output by the buzzer, it can be replaced with another alarm generation means such as an optical display by lighting a lamp.

[0038]

As described above, according to the present invention, the operation completion display processing is performed without waiting for the actual operation (operation completion) of the equipment in response to the operation input of the operator, and the operation completion signal of the equipment is used for the operation. Since the completion display is stopped, and if the operation is not completed within a certain period of time, alarm generation processing is performed.
It is possible to reduce the burden on the operator due to the response delay from the switch operation of the operator to the response of the display, and to improve the operability.

[Brief description of drawings]

FIG. 1 is a processing system diagram of remote control showing an embodiment of the present invention.

FIG. 2 is a processing procedure diagram of an operation support agent according to the embodiment.

FIG. 3 is a processing system diagram of remote operation according to another embodiment of the present invention.

FIG. 4 shows an example of a conventional remote control processing system.

FIG. 5 shows an example of a processing system of direct operation.

FIG. 6 is a functional configuration diagram of a conventional system and a system of the present invention.

[Explanation of symbols]

1 ... Control console 2 ... Information processing unit of the master station 3 ... Information processing unit of child station 4 ... Equipment 6 ... Operation support agent SW ... Operation switch L: Indicator lamp BZ ... Alarm buzzer M ... meter

Claims (4)

[Claims] 1. A master station transmits a switch operation signal to a slave station in response to a switch operation by an operator, the slave station controls equipment according to the switch operation signal, and the slave station sends an operation completion signal of the equipment to the master station. In the remote monitoring and control system having a human interface for displaying the operation completion signal of the device on the display by the operation completion signal, the master station displays and outputs the operation completion signal upon receipt of the switch operation signal. A remote monitoring control system comprising an operation support agent that stops this display upon receipt of the operation completion signal. 2. The operation support agent, when opening and closing a device, performs operation completion by a display switching process of a display device,
2. The remote monitoring control system according to claim 1, wherein the inching operation of the device is performed by additionally displaying the target operation amount on the display to complete the operation. 3. The remote monitoring control system according to claim 1, wherein the operation support agent displays the operation completion display and the operation completion display on the same display device or another display device. 4. The operation support agent performs an alarm generation process for a switch operation when the operation completion signal is not received within a fixed time from the operation completion display, The remote monitoring and control system according to item 1.