JPH031669B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a simulation control device used for operation training of general plants, etc.

[Technical background of the invention and its problems] As plants and the like have become more complex in recent years, their control operations have also tended to become more and more complex. For this reason, it is desirable to be able to perform control operation training for plants, etc. in accordance with the actual situation, and various functional improvements have been made to simulate control devices to fully meet these demands. . In general, a simulation control device is comprised of an electronic computer that has the function of simulating the dynamic characteristics and logic sequence of an actual machine, and a simulation control panel that controls, operates, and monitors the computer. Furthermore, regarding logic sequences, there are cases where everything is converted into software and the functions are controlled by an electronic computer, and cases where fast response such as selection switching circuits and alarm circuits are required due to computer capacity constraints and economic efficiency. In some cases, a relay sequence is configured in a simulated control panel, and the rest is processed by an electronic computer.

By the way, in order to improve training efficiency, a simulation control device is required to have a function of arbitrarily reproducing the operating conditions of several types of typical plants. In this case, if all the logic sequences are converted into software, typical plant conditions can be displayed on the simulated control panel without any restrictions according to the predetermined setting input, but the amount of software would be enormous. It puts a heavy burden on the computer and takes a long time to process.
Furthermore, the equipment is also very expensive. Therefore, in view of this problem, as mentioned above,
It is conceivable to configure part of the logic sequence as a relay sequence, but on the other hand,
When displaying plant status on a simulated control panel,
It is not possible to control the selected device display, alarm display, etc.
There was a problem in that it had to be set manually, which was time-consuming.

[Object of the Invention] The present invention has been made in view of the above, and an object of the present invention is to provide a simulation control device that can easily display status settings in a short time.

[Summary of the Invention] In order to achieve the above object, there is provided a plant state setting device into which a command for setting a desired simulated plant state is input, and an operation for setting the simulated state based on the command input of the plant state setting device. a computer having a logic sequence section that performs the above-mentioned logic sequence section; A display device capable of displaying each calculation result; and a simulation control panel having a display device, wherein the computer includes a data table that stores output data of a relay sequence section, and the relay sequence section includes: The gist of the present invention is to perform sequence calculations based on output data read out from the data table in response to command input from a plant status setting device, and to output the calculation results to the display section.

[Embodiments of the Invention] Examples of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of a simulation control device according to an embodiment of the present invention. This simulation control device includes a calculation unit 1 that simulates the dynamic characteristics and logic sequence of the actual machine, and a simulation control panel 3 that controls, operates, and monitors the plant status set under the control of the calculation unit 1. This is a configuration that has

The simulated control panel 3 includes an operation section 5 through which the trainee performs various control operations according to the set plant state.
It is configured to correspond to circuits that require quick response such as selection switching circuits and alarm circuits, and sequences the plant status in response to an operation signal from the operation unit 5 or a plant status setting signal from the calculation unit 1. It has a configuration including a relay sequence section 7 that controls, and a display section 9 that displays a simulated plant state according to the sequence control in the relay sequence section 7 or in response to a plant state setting signal from the calculation section 1.

The calculation section 1 includes a plant state setting device 11 for inputting a command for a desired simulated plant state, and a plant state setting device 11 for inputting a command for a desired simulated plant state. It has a logic sequence section 15 that performs calculations to control and output a simulated state of the plant to the simulation control panel 3 based on operation signals, and a plant state data table 17 that stores the calculation results of the logic sequence section 15. The calculation section 1 further includes a relay sequence output data table 19 that stores data to be output to the relay sequence section 7 for creating a simulated plant state according to command input from the plant state setting device 11; Status data table 17
and relay sequence output data table 1
This configuration includes a digital output device 21 that controls the output of data from the relay sequence section 7 or the display section 9 as appropriate. In addition, in the calculation unit 1, the plant state setting device 11 and the relay sequence output data table 19,
The other components are each composed of individual processing units (CPUs) due to their processing characteristics.

Next, the operation of this embodiment will be explained using the processing flow shown in FIG.

First, when a command for initial conditions is input via the plant state setting device 11 to set the simulated plant state to a desired state (step 100), the logic sequence section 15 inputs a command from the built-in initial condition data table _D1. Initial condition data regarding the simulated plant state to be set according to the command input is read out, based on which data to be output to the simulated control panel 3 is calculated and written into the plant state data table 17 (steps 110, 120). On the other hand, when a command is input, the plant state setting device 11 reads initial data for a relay sequence related to a simulated plant state to be set according to the command input from the built-in initial data table D ₂ for a relay sequence, and reads this data. is written into the relay sequence output data table 19 (step 210).

The digital output device 21 transmits the data written in the plant status data table 17 and the relay sequence output data table 19 to each display section 9 of the simulated control panel 3 at an appropriate timing.
and output to the relay sequence section 7 (steps 130, 140, 220, 230).

The relay sequence section 7 is connected to the digital output device 2
A sequence calculation is performed based on the data supplied from the relay sequence output data table 19 via the relay sequence output data table 19, and the calculation result is outputted to the display section 9 (step 240). The display unit 9 outputs a display according to the calculation result from the relay sequence unit 7 and the data supplied from the plant status data table 17 via the digital output device 21, thereby setting the plant status setting device in the simulated control panel 3. The simulated plant state according to the setting command from 11 is output (step 250).

FIG. 3 shows a specific example of the relay sequence section 7 of the simulated control panel 3. In the figure, the relay sequence unit 7 is connected in series to a reset switch 25 consisting of a normally closed contact that resets the relay sequence to a positive terminal output line 23 of a power source (not shown), and its operation is controlled by the calculation unit 1. An A state setting section 29 and a B state setting section 31 are connected in parallel, respectively, for setting the relay sequence to, for example, a predetermined simulated A state and B state via an output contact 27 consisting of a normally closed contact. The A state setting section 29 and the B state setting section 31 have an A state setting switch 33, an A state holding relay 35, a B state setting switch 37, and a B state setting switch 33 and an A state holding relay 35, respectively, between the output contact 27 and the negative terminal output line 45 of the power source. Status holding relay 3
9 are connected in series. Further, the A state setting section 29 and the B state setting section 31 are connected to the A state setting switch 33 and the B state setting switch 3, respectively.
A state holding contact 4 consisting of a normally open contact connected in parallel to 7 and held in state by the A state holding relay 35 and B state holding relay 39, respectively.
1 and B state holding contacts 43.

The operation when the relay sequence section 7 receives an initial condition command input to the plant state setting device 11 in order to set the simulated control panel 3 to the A state, for example, with the above-described configuration will be described below.

The operation of the calculation section 1 when a command is input to the plant state setting device 11 is as described above, and in particular, the data table 19 for relay sequence output contains command data to set the relay sequence section 7 to state A after being reset. is written. The calculation unit 1 outputs a relay sequence output data table 19 via a digital output device 21.
This is accomplished by temporarily turning off the output contact 27 in order to reset the relay sequence, thereby stopping the power supply to the A state setting section 29 and the B state setting section 31, according to the data written in the relay sequence. According to the next data in the relay sequence output data table 19, the calculation section 1 temporarily turns on the A state setting switch 33 in order to set the relay sequence to the A state. As a result, the A state holding relay 35 of the relay sequence section 7 becomes energized and sets the A state holding contact 41 to the on state, thereby setting the A state setting switch 3.
3 returns to the OFF state, it remains energized and maintains the relay sequence in the simulated A state.

Note that this series of actions for setting the A state is the same when setting the B state.

Note that the present invention is not limited to the above-described embodiments, and can be modified in various ways. For example, the relay sequence output data table 17 may be modified in advance by adding a function of storing table contents for several hours. It is also possible to display on the simulated control panel 3 not only the current state of the plant but also the state of the plant at any time within the time that can be stored.

[Effects of the Invention] As explained above, according to the present invention, typical plant conditions can be transferred from the computer side to the computer while the simulated control panel is provided with relay sequence functions such as a selection switching circuit and an alarm switching circuit. All can be displayed on a simulated control panel without much burden. This makes it possible to simultaneously and automatically set a logic sequence and a relay sequence based on one plant state setting request, improving operability as a simulation control device and usefulness in driving training effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a flowchart showing the processing procedure of the embodiment, and FIG.
The figure is a configuration diagram showing an example of a relay sequence section of the same embodiment. 1... Arithmetic unit, 3... Simulated control panel, 5... Operation unit, 7... Relay sequence unit, 9... Display unit,
11...Plant status setting device, 13...Digital input device, 15...Logic sequence section, 17
...Plant status data table, 19...Relay sequence output data table, 21...Digital output device.

Claims (1)

[Scope of Claims] 1. A plant state setting device into which a command for setting a desired simulated plant state is input, and a logic sequence unit that performs calculations for setting the simulated state based on the command input to the plant state setting device. and a relay sequence section in which parts that require quick response such as selection switching circuits and alarm circuits are constructed of relays, and each calculation result of the logic sequence section and relay sequence section can be displayed. In the simulation control device, the computer includes a data table that stores output data of a relay sequence section, and the relay sequence section stores output data from a plant state setting device. A simulation control device characterized in that a sequence calculation is performed based on output data read from the data table in response to a command input, and the calculation result is output to the display section.