JPH06348332A - Plant operation control device - Google Patents

Abstract

(57) [Abstract] [Purpose] To enable easy and safe motor unit testing without changing the actual wiring from the main control room. [Configuration] An operation permission switch 5 for permitting manual operation of the device during normal operation, a test switch 12 for permitting an operation for a device unit test, a switch change permission switch 6 for permitting switch position switching, and an operation permission Switch 5
When the test switch 12 is turned on, normal control calculation is performed by inputting information from the screen touch input device 4 and the switch change permission switch 6, and when the test switch 12 is turned on, input information from the screen touch input device 4 and switch change permission are permitted. An arithmetic unit for forcibly outputting the control signal for the device unit test regardless of other process conditions by the ON operation of the switch 6 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant operation control device for automatically and manually operating and controlling plant equipment as required, and more particularly to a valve from a screen of a display device such as a CRT instead of a hardware switch. The present invention relates to a plant operation control device that accepts manual operation of field equipment such as pumps and pumps.

[0002]

2. Description of the Related Art Manual operation of equipment such as valves and pumps has been performed by a twist switch on an operation table of a control panel, but with the recent development of digital technology, a CRT or the like having a touch input function has been developed. The method of doing from the screen has been adopted.

An example of such a screen touch operation type plant operation control device is shown in FIG. A plant operation control device 1 shown in this figure includes a display device 3 such as a CRT for displaying the configurations and states of the plant 2 and field equipment, switch symbols for equipment operation, switch selection positions, etc. A screen touch input device 4 installed on the screen of the device 3 for inputting commands by a touch operation of an operator
And an operation permission switch 5 for permitting manual operation of the device from the screen, and a switch change permission switch 6 for permitting switching of the switch position input via the screen touch input device 4. The peripheral device controller 7 for controlling the input / output of the signal is provided. Further, the plant operation control device 1 receives the input information from the screen touch input device 4 and the permission signal from the switch change permission switch 6 to change and select the switch position for device operation by the screen touch operation. An arithmetic unit 8 is provided which performs control arithmetic based on the switch position information and the process information input from the plant 2. Reference numeral 9 is a storage circuit that stores the current switch position.
Reference numeral 0 is a process input / output device for inputting / outputting data between the arithmetic unit 8 and plant field equipment.

In the plant operation control device configured as described above, when it is desired to manually operate the plant equipment during normal operation, the operator first turns on the operation permission switch 5 which permits acceptance of the touch operation on the screen. When the switch 5 is turned on, the peripheral device controller 7 is ready to receive a touch operation signal from the screen touch input device 4, and the worker selects a device to be operated from the field devices displayed on the display device 3, Touch the device symbol on the screen. By this touch operation, the arithmetic unit 8 inputs a device selection command from the screen touch input device 4 via the peripheral device controller 7, and as shown in FIG. 6, a conventional switch form of hardware corresponding to the device ( The switch symbol reflecting the position and function) and the current switch position are returned and displayed on the display device 3.

Next, the operator selects a switch symbol on the screen corresponding to the newly desired switch position by touching, and then turns on the switch changeover permission switch 6, and the arithmetic unit 8 commands the selected switch position. Is received, the switch position is determined according to the switch position selection logic as shown in FIG. 7 and stored in the memory circuit 9, and the display of the currently selected switch position on the screen of the display device 3 is changed.

Then, according to a control logic as shown in FIG. 8, the motor start signal is generated based on various conditions such as the switch position determined above and the state of the process input signal obtained through the process input / output device 10. Alternatively, the stop signal is output to the drive device of the plant equipment. The currently selected switch position and the desired position on the display device 3 are identified by color change display or the like.

In addition, at the time of plant construction or regular inspection, in order to confirm the soundness of the motor of the pump or the motor-operated valve, the motor is started for a certain period of time, and when the state of the motor becomes a steady state, the state of the motor A motor unit test for measuring is performed. At this time, in order to start the motor, not only the switch is moved to the start position by touch operation, but also the wiring to the terminal block of the board in which the process input / output device 10 is built-in is appropriately changed in order to satisfy various start conditions. I was responding.

[0008]

In order to carry out the motor unit test in this way, it is necessary to change the actual wiring and restore it after the test is completed, and it takes a lot of time to confirm them. However, it is a heavy burden on the worker. In addition, if there is an error in the change or restoration operation, there is a risk of equipment failure or accident.

Further, in recent years, due to the adoption of the multiplex transmission device, the process input / output devices are often distributed and installed in the field, and the work of changing the wiring is becoming more and more burdensome for workers.

The present invention has been made in view of the above circumstances, and provides a plant operation control device capable of easily and safely performing a motor unit test without changing actual wiring from the central control room. The purpose is to

[0011]

The present invention provides a display device for displaying predetermined information including a switch symbol for operating equipment of a plant, and an input device for inputting predetermined information including an operation command of the equipment. Provided, in the plant operation control device for operating and controlling the equipment automatically and manually, an operation permission switch for permitting operation of equipment for plant operation,
A test switch that allows operation of the device for unit testing, a switch change permission switch that allows switching of the switch position based on the switch position command for operation of the device input from the input device, and the currently selected device Based on the switch position command input from the input device when the operation permission switch is ON and the permission signal from the change permission switch, it has a memory circuit that separately stores the switch position for plant operation and equipment unit test. A single device stored in the memory circuit based on the switch position command stored in the memory circuit and the switch position command input from the input device when the test switch is on and the permission signal from the change permission switch. Switch the test test switch position and select the switch currently selected in this memory circuit. Tsu is characterized in that an arithmetic unit for outputting a control signal of a device based on the process information from the switch position information and the plant.

According to the present invention, in the plant operation control device having the above-mentioned configuration, the arithmetic unit, when the switch position command for starting the equipment is input when the test switch is turned on,
When the switch enable switch is turned on, other start conditions are bypassed and a device start signal is forcibly output.When a switch position command for stopping the device is input when the test switch is turned on, another switch is stopped by turning the switch enable switch on. By bypassing the conditions, the device stop signal is forcibly output, and the switch permission switch is turned off to put the switch position for device unit testing in the non-selected state, and then shift to control based on the switch position for plant operation. And

[0013]

In the above structure, when the operation permission switch is turned on, the switch symbol for plant operation of the device is displayed on the display device by selecting the device, and when the test switch is turned on, the switch symbol for the device unit test is displayed. Is displayed on the display device.

When a desired switch position is selected from the switch symbols for plant operation, the arithmetic unit determines the switch position for plant operation according to the switch position selection logic for plant operation by turning on the switch change permission switch. The current switch position stored in the memory circuit is switched. Then, a normal control calculation is performed based on the switch position and the process information from the plant, and a device control signal is output.

Further, when a desired switch position is selected from the switch symbol for the device unit test, the arithmetic unit becomes a switch for the device unit test according to the switch position selection logic for the device unit test when the switch change permission switch is turned on. The position is determined and the switch position for the device unit test in the memory circuit is switched, and the device control signal is forcibly output from this switch position for the device unit test by bypassing other conditions.

Thus, the motor unit test of the selected device can be easily and safely carried out by the selection operation from the screen of the display device without changing or restoring the wiring of the board accommodating the process input / output device. You can

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example are designated by the same reference numerals, and the duplicated description will be omitted.

FIG. 1 shows a plant operation control apparatus 11 according to an embodiment of the present invention, which includes a display device 3 such as a CRT,
A screen touch input device 4 such as a touch screen installed on the screen of the display device 3, an operation permission switch 5 for permitting a manual operation of the device during normal operation from the screen, and a device operation for a device unit test. The test switch 12, the switch change permission switch 6 for permitting the change of the switch position based on the device operation switch position selected from the screen, the peripheral device controller 7, the process input / output device 10, and the peripheral device controller 7. It is configured with a computing device 8'which outputs a control signal to the plant 2 based on a touch operation signal input via the process input / output device 10 and a process signal input via the process input / output device 10.

In this embodiment, the arithmetic unit 8'applies to the normal operation switch position selection logic when the operation permission switch 5 and the switch change permission switch 6 are turned on based on the input information from the screen touch input device 4. Therefore, when the switch position of the corresponding device is changed and the test switch 12 and the switch change permission switch 6 are on,
The switch position of the motor of the corresponding device is switched according to the device unit test switch position selection logic, stored in the internal memory circuit 9, and the state of those switch positions and the process information from the plant 2 are input to perform control calculation. I do. In particular, when the device unit test switch position is the start position, the logic for forcibly outputting the start signal of the motor is provided regardless of other conditions. When the stop position of the device unit test switch is selected, the switch change permission switch 6 is turned on to forcibly output the motor stop signal, and the switch change permission switch 6 is turned off for control during normal operation. Equipped with transition logic.

Next, the operation of the plant operation control device configured as described above will be described.

When the equipment is manually operated during normal plant operation, the equipment symbol displayed on the screen is touched when the operation permission switch 5 is turned on, as shown in FIG. Switch symbols for plant operation are displayed on the same screen. Then, by selecting and touching a desired switch position, a switch position command is input from the screen touch input device 4 to the arithmetic unit 8'via the peripheral device controller 7, and the plant operation switch position selection shown in FIG. The logic 21 operates. Then, when the switch change permission switch 6 is turned on, the switch position is changed based on the logic 21 and is stored in the memory circuit 9. Then, according to the switch position and the process input signal stored in the memory circuit 9, the control logic 2 in the normal state shown in FIG.
3 operates, and device control is performed according to the control logic 23.

On the other hand, when carrying out a device unit test,
First, the operator turns on the test switch 12, selects a device to be operated from the devices displayed on the display device 3, and touches the device symbol on the screen. Arithmetic device 8 '
In response to the ON signal of the test switch 12 and the device selection command transmitted from the screen touch input device 4, the switch symbol (M single start, M
Single stop) is returned to the display device 3 for display.

Next, when the operator touches the switch symbol of the M single starting position on the screen, the arithmetic unit 8'receives the M single starting position command. Then, when the switch change permission switch 6 is turned on, the device unit test switch position selection logic 22 shown in FIG. 2 operates, and the M single start position is selected based on the M single start position command and stored in the storage circuit 9. It Based on the M single starting position stored in the storage circuit 9, the arithmetic unit 8'bypasses the plant operating switch position and other conditions according to the control logic 24 for unit testing of the equipment shown in FIG. Is output.

When the M single starting position is turned off, the test switch 12 is turned on as in the case of turning on the display device 3
Select the device for which the M single activation position is to be turned off from the devices displayed in, and touch the switch symbol on the screen.
The arithmetic unit 8 ′ receives the device selection command transmitted from the display unit 3 and the ON signal of the test switch 12, and
The switch symbol (M single start, M single stop) for the device unit test as shown in FIG.

Next, when the operator touches the switch symbol of the M single stop position, the arithmetic unit 8'receives the M single stop position command. When the switch change permission switch 6 is turned on, the device unit test switch position selection logic 22 shown in FIG. 2 operates to turn off the M single start position based on the M single stop position command and simultaneously turn on the M single stop position. And is stored in the memory circuit 9. In the arithmetic unit 8 ', the control logic 24 for the device unit test shown in FIG. 3 operates based on the turning on of the M single stop position, and the motor stop signal is bypassed by bypassing the switch position during normal operation and other conditions. Is output.

Further, when the switch change permission switch 6 is turned off in the state where the M single stop position is selected, as shown in FIG.
The device single unit test switch position selection logic 22 turns off the M single stop position. As a result, both the M single start position and the M single stop position are turned off, and the normal control logic 23 shown in FIG. 3 executes normal control based on the plant operation switch position.

The switch position of each device of the plant 2 is always stored in the storage circuit 9, and is displayed as the current switch position by being returned to the display device 3 from the arithmetic unit 8 '.

As described above, according to this embodiment, the device is selected with the test switch 12 in the on state, the M single starting position is selected from the displayed switch symbols by the touch operation, and the switch change is permitted. By turning on the switch 6, it is possible to bypass the other conditions and start the motor of the device. By selecting M single stop position and turning on the switch change permission switch, it is possible to stop the motor of the started device by bypassing other conditions, turning off the motor start signal and turning on the motor stop signal. it can. Further, since the motor stop signal can be turned off by turning off the switch change permission switch 6 in this state, the motor of any device selected can be easily and safely selected without changing or restoring the actual wiring. A unit test and its cancellation are possible.

In the above embodiment, C is used as the display device.
Although the RT is assumed, it can be applied to a display device such as a liquid crystal display, a plasma display, and an EL (Electro-Luminescence) display. Also, as the input device, a screen touch input device such as a touch screen that detects a touched position on the screen by an infrared type, a capacitance type, or the like was used, but in addition to this, a mouse, a light pen, a tablet, or the like. Obviously, it can be applied by using the indirect input means of.

Also, although the explanation has been made on the assumption that the operation target is a field device such as a valve or a pump, a CR which requires a motor test.
It can be easily applied to all devices that can be operated from the T screen.

[0031]

As described above, according to the present invention, by selecting the start position and the stop position for the device unit test by the touch operation, the test start, stop and release of the test state of any motor can be performed. Therefore, the burden on the operator can be reduced, and a safe and reliable motor unit test can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a plant operation control apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a switch position selection logic according to the present invention.

FIG. 3 is a diagram showing a control logic according to the present invention.

FIG. 4 is a diagram exemplifying a display screen of a switch symbol for a motor unit test.

FIG. 5 is a block diagram showing a conventional example of a plant operation control device.

FIG. 6 is a diagram illustrating a conventional display screen of switch symbols.

FIG. 7 is a diagram showing a conventional switch position selection logic.

FIG. 8 is a diagram showing a conventional control logic.

[Explanation of symbols]

 1, 11 ... Plant operation control device 2 ... ... Plant 3 ... ... Display device 4 ... ... Screen touch input device 5 ... ... Operation permission switch 6 ... ... Switch change permission switch 7 ... ... Peripheral device controller 8 , 8 '... Arithmetic device 9 ... Memory circuit 10 ... Process input / output device 12 ... Test switch

Claims (2)

[Claims] 1. A device comprising a display device for displaying predetermined information including a switch symbol for operating a device of a plant and an input device for inputting predetermined information including an operation command of the device, and operating the device automatically and manually. In the plant operation control device that controls the operation of the plant, an operation permission switch that permits the equipment operation for the plant operation, a test switch that permits the equipment operation for the equipment unit test, and a switch for the equipment operation that is input from the input device. It has a switch change permission switch that permits switching of the switch position based on a position command, and a memory circuit that separately stores the currently selected switch position of each device for plant operation and device unit test. When the permission switch is ON, the switch position command input from the input device and the change permission switch Switching the plant operation switch position stored in the storage circuit based on the permission signal of the switch circuit, and based on the switch position command input from the input device when the test switch is ON and the permission signal from the change permission switch. Operation for switching the switch position for the device unit test stored in the memory circuit, and outputting the device control signal based on the switch position information currently selected in the memory circuit and the process information from the plant. And a plant operation control device. 2. The plant operation control device according to claim 1, wherein the arithmetic unit turns on the change permission switch when a switch position command for device activation is input when the test switch is turned on. By bypassing other starting conditions and forcibly outputting a device starting signal, and when a switch position command for stopping the device is input when the test switch is turned on, other stop conditions are bypassed by turning on the change permission switch. The plant is characterized by forcibly outputting a device stop signal and turning off the change permission switch to make the switch position for device unit testing in a non-selected state, and shifting to control based on the switch position for plant operation. Operation control device.