JPS6234203A - Crt operation device - Google Patents

Abstract

PURPOSE:To reduce the size of a centralized control panel without deteriorating its operability by selecting a device of controlled system via a CRT device and operating the selected device via a shared operating station. CONSTITUTION:A device to be controlled is selected within a system with operation of a CRT device 12 of a control panel 11. Thus a selection signal 15 is supplied to a digital controller 14 via a CRT controller 16 and a transmitting device 17. Then the selected device is operated by means of an operating switch and an operating station 10 containing a display meter. Thus the CRT device 12 having a time delay is used only for the selecting operation. This attains the reduction of a centralized control panel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a CRT operating device that improves operability by combining a CRT device equipped with a signal input means with a normal operating station.

[Technical background of the invention and its problems]

Recently, with the development of microprocessor technology, for example, in the control system of a power plant, control signals, such as commands for switching the display contents, etc., can be directly transmitted from a CRT display device (hereinafter referred to as a CRT device). C.P.
Microprocessor control has come to be used, in which a TR (control device that centrally controls the display and operation of a CRT screen) is manually operated and data is transmitted to a digital controller through a data transmission device.

This reduces the size of the control panel compared to when an operation station for PID control is installed on a centralized control panel for each device that makes up the system (in the case of a thermal power plant, the number of operation stations reaches 40 to 60). However, there is a problem that there is a delay in signal processing time and the operability deteriorates.

In other words, CPTRs and digital controllers perform scan control to capture input at certain time intervals, and CRT device screens also update the display at certain time intervals, so the final result is displayed on the CRT after an operation is performed.
There is a time delay before it appears on the device screen.

This time delay varies depending on the number of input/output points, complexity of control, etc., but may reach several seconds in total control of a large plan j~.

On the other hand, in normal analog PID control, an operator operates a PB (push button switch) on an operation station and visually checks the meter display to determine the timing of operation.

In this case as well, if the screen display on the CRT'A is used instead of the meter display, the delay in screen display may make it difficult to perform proper operations.

[Purpose of the invention]

The present invention uses a CRT device to select only target devices within the system, and operates and displays each device using a shared operation station, thereby reducing the need for a centralized control panel without sacrificing operability. The purpose of this invention is to provide a rational CRT operating device that enables

[Summary of the invention]

The present invention provides a CR'I' operation device that centrally controls a system including a large number of devices through a CRT device having a signal input means and a digital controller, which is equipped with a shared operation station including operation switches and display meters. The devices to be controlled within the system are sequentially selected via the CRT device, and the operation and status display of the selected devices are performed using the operation switches and display meters on the shared operation station, thereby controlling the CRT device. This makes it possible to reduce the number of operation stations and downsize the control panel without deteriorating the operability of equipment control due to delays in signal processing.

[Embodiments of the invention]

An embodiment of the present invention is shown in FIG.

In FIG. 1, the control ff1ll includes a shared operation station 10, a CRT device 12, and a CPTR 16, and the selection of the target device is performed using a selection signal 1 from the CRT device 12 given by a light pen, touch screen, etc.
5 to the digital controller 14 via the CPTR 16 and the data transmission device 17, and the name (or signal) of the selected device is transmitted to the CRT device [
It is displayed on 12 screens.

Once the target device is selected, the shared operation station lO
Control the target device by operating the PB above.

In this case, the signal of the operating station 10 is
3 to the digital controller 14 to control the selected device, but the delay due to signal transmission is zero, and the delay time for control is the scan time of the digital controller 14 (usually 0.1 seconds). (below), the problem of delay time is eliminated.

An example of related functions between the operating station 10 and the digital controller 14 is shown in FIG.

The operation station 10 includes a meter 1 for displaying process values.
, controller output display meter 2. There is a meter 3 for setting value display, PB4, 5 for automatic/manual switching, PB6, 7 for setting value increase/decrease operation, and PB8.9 for manual output increase/decrease operation, and each signal is input to the digital controller 14, and the memory area 18 stored once at the corresponding address within.

- The force selection signal 15 is inputted to the selection control unit 19 in the digital controller 14 via the C, PTR 16 and data transmission device [17], and in accordance with the selection signal, the once-stored operation signal is applied to the selected device. Move to address.

As a result, the equipment selected by the operation of the shared operating station 10 is controlled without time delay, and its output data (process value, controller output or set value) is transmitted to each meter 1 on the operating station 10,
2.3, the operator can perform operations properly and easily.

Note that since the device selection is performed via the CPTR 16, a time delay occurs, but since the operation by the operation station 10 is performed after the device selection is completed, the time delay in device selection does not become a problem. If the logic is configured to hold the selection condition after selection, there will be no time delay under the same selection condition.

In the above embodiment, one common operation station is used, but it is also possible to use a plurality of operation stations if necessary.

〔Effect of the invention〕

As explained above, according to the present invention, an operation device for centrally controlling a system including a large number of devices is connected to a CRT.
The CRT consists of a device and a shared operation station, and the selection of the target device to be controlled is performed using the CRT device, and the actual operation is performed using the shared operation station.
It is possible to reduce the size of the control panel without reducing operability due to a delay in the operation time of the T device.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an example of related functions between an operating station and a digital controller in the present invention. 1 Meter for process value display 2 Meter for controller output display 3 Meter for set value display 4 PB for automatic switching 5 PB for manual switching 6.7 PB for setting value increase/decrease operation 8.9 PB for manual output increase/decrease operation 10 Operation station 11 Control panel 12 CRT device 13 Cable 14 Digital controller 15 Selection signal 16 CPTR 17 Data transmission device 18 Memory area 19 Selection control section (8733) Agent Patent attorney Yoshiaki Inomata (1 person) 2nd screen

Claims (1)

[Claims] A system containing a large number of devices can be connected to a CR equipped with a signal input means.
In a CRT operation device that is centrally controlled via a T device and a digital controller, a common operation station including operation switches and display meters is provided,
A CRT operation characterized in that the devices to be controlled in the system are sequentially selected via the CRT device, and the operation and status display of the selected devices is performed using the operating switches and display meters on the shared operating station. Device.