JPH05323919A - Plant monitoring device - Google Patents

Abstract

PURPOSE:To provide a plant monitoring device which easily and efficiently uses a signal for displaying a trend graph among plural graphically displayed process signals. CONSTITUTION:The process signals Pa-Pm from a plant are inputted to the graphic screen display part 11 of an electronic computer 2 at a prescribed period through a process input device 1. The electronic computer stores the process signals in a process value storage part 15 and graphically displays plant processes normally on the display screen of a CRT display device 3 with the process signals. When an operator makes a request to display the name of an inherent signal on the touch panel 4 on the CRT display surface, a display signal retrieval part 13 retrieves the inherent name of a process signal stored in a screen data storage part 12 and displays the retrieved inherent name on the CRT display screen by interruption through an inherent signal name display part 14. Consequently, the operator can selects the process signal for displaying the trend graph with the easy operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring device for displaying the state of a plant or the like on a display device in a graphic screen and, more particularly, to a trend graph display device for displaying a plurality of trend data on the same graph. The present invention relates to an improved plant monitoring device that can be displayed on a display screen.

[0002]

2. Description of the Related Art Recently, in various plants, a so-called plant monitoring device is often used for monitoring the process by displaying a graphic screen for displaying the state of the plant on a CRT display device. Has been done. In such a plant monitoring device, in general,
On the graphic screen displayed on the display device, the equipment symbol of the related process and the immediate data of the process value related to the equipment are displayed on the one screen in such a manner that the flow of the process can be easily known. It is arranged and displayed. By looking at such a graphic screen,
Usually, a plant operator grasps and monitors the process state of the plant.

By the way, the process value displayed on such a graphic screen is called immediate data at that moment, and it is essential to display a so-called trend graph in order to see changes in the past process. Become. Among such trend graph displays, in particular, the trend graph display that can simultaneously display a plurality of related process data on one graph can easily see the correlation with other process values. It is very useful and widely used.

In such a trend display device, normally, process values to be simultaneously displayed on the same graph are registered in advance in several groups and one of the groups is selected, or the operator selects a trend. When displaying a graph, select and display the process values that you want to display simultaneously on the same graph. In that case, the operator selects a unique signal name possessed by each process value and manually inputs it on the spot using an input means such as a keyboard to display an arbitrary trend graph according to the situation. It was being done.

[0005]

By the way, in the above-mentioned prior art, when the operator wants to display the process value of any combination on the trend graph according to the situation, the process value to be displayed has You need to know the unique signal name. However, in recent plants, the scale has increased and the control methods have become more complicated, so the number of process values of the plant to be displayed and monitored is also very large, and the operator can It is not easy to memorize all the proper names owned by, and there is a problem that it takes time to find a required proper signal name. Further, in the above-mentioned conventional technique, in order to display the trend graph, a troublesome operation of registering the unique signal name of the found process value by manual input by the keyboard of the operator is required.

Further, even when the combinations of process signals corresponding to all situations are registered in advance, the number of combinations (groups) becomes very large due to the increase in the number of process signals. It is not always an easy task for the operator to find a desired combination to display from the combinations (groups), and it takes time to display it.

In view of the above-mentioned problems in the prior art, therefore, in the present invention, even if the number of process signals of the plant to be monitored is increased and the number of combinations thereof is increased, the process of displaying a trend graph on the display device is performed. It is an object of the present invention to provide a plant monitoring device that can easily select and display a signal, and does not require manual registration with a keyboard, and therefore is easy to operate and has excellent usability.

[0008]

In order to achieve the above object of the present invention, a plant monitoring apparatus according to the present invention includes a process input device that takes in a process signal at a constant cycle, and a signal that is taken in from the process input device. An electronic computer that performs predetermined calculations and outputs graphic screen information,
A plant monitoring device comprising a display device for capturing graphic screen information calculated by the electronic computer and displaying the graphic screen information as a graphic screen, wherein the electronic computer further includes a screen data storage unit for storing the graphic screen information, The unique signal name of the process signal on the graphic screen displayed on the display device is obtained from the unique signal search unit that searches the screen data storage unit where the graphic screen information is saved, and the unique signal search unit. And a unique signal name display section for displaying the information of the unique signal name thus obtained on the display device as an interrupt.

Further, according to the present invention, in the above plant monitoring device, a touch panel device, which is a display selection device for selecting a proper name of the interrupted process signal, is provided on the front surface of the display screen of the display device. Is provided.

Furthermore, according to the present invention, the unique name display section of the electronic computer includes a unique signal name display section for displaying a list of information of unique signal names obtained by the unique signal search section on the display device. It has a trend screen display unit that outputs a trend graph screen based on a process signal from the process input device, and a process value storage unit that stores the value of the process signal from the process input device. And a screen display requesting unit for requesting a trend graph screen display to the trend screen display unit in response to a selection output from the display selecting unit, and also in response to a unique signal name search request from the display selecting unit. And a unique signal name display section for outputting a search request signal to the unique signal name display section.

In addition, according to the present invention, in order to achieve the above object, a process input device that takes in a process signal at a constant cycle and a process signal from the process input device are input to perform a predetermined calculation. A plant monitor including an electronic computer that outputs display information, a display device that displays a process state of a plant as a screen based on the display information from the computer, and a display selection device that is attached to the front surface of the display screen of the display device. In the device, the electronic computer has a function of graphically displaying a process of a plant from the input process signal, a function of displaying a trend graph of the input process signal, and the graphic based on a request signal from the display selection device. A display selection function for selecting the display function and the trend graph display function, and Then, when the process signal is graphically displayed on the display device, the plant monitoring device having a function of interrupting and displaying the unique signal name of the displayed process signal based on the request signal from the display selection device. Is proposed.

[0012]

According to the above plant monitoring apparatus of the present invention, the screen information is saved such that the screen information of the graphic screen is saved when the operator gives an instruction to display a list of unique signal names of process signals. The unique signal name search unit searches the unique signal name of the process signal currently displayed on the display device, and the found unique signal name is searched by the unique signal name display unit on the display device. Is displayed as a list of unique signal names. Then, by selecting process signals to be simultaneously displayed as a trend graph from the list of unique signal names displayed as an interrupt, a trend graph in an arbitrary combination according to the situation at that time is displayed on the display device.

As described above, in the plant monitoring apparatus according to the invention, the unique signal names of all the process signals displayed on one graphic screen are displayed as a list on the graphic screen by interruption. Usually the graphic screen is
One process of the plant is displayed on one screen as a trend graph because the process flow is displayed together with the equipment symbols arranged in the process and the process values related to the equipment, at a glance. When you find the process signal you want to display, the graphic screen on which the process signal is displayed is displayed, and at the same time, the list of unique signals is displayed. You can make a choice. Also,
By selecting a process signal to be displayed as a trend graph from the list of unique signal names displayed as an interrupt on the graphic screen, it is possible to easily register process signals to be displayed at the same time.

[0014]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a plant monitoring apparatus according to an embodiment of the present invention. In this figure, process signals Pa to Pm from a plant (not shown) are collected by the process input device 1. The process signals collected by the process input device 1 are input to a computer 2 for performing calculation for displaying a graphic screen, a trend graph, and a unique signal name of the process signal, and further, the output of the computer 2 The signal is output to and displayed on the CRT display device 3 as a display means. Further, a touch panel 4 as a requesting means for issuing a screen display request is mounted on the CRT display device.

The internal details of the computer 2 are as follows.
As shown in the figure, a graphic screen display unit 11 for inputting an output signal from the process input device 1, a screen data storage unit 12, a unique signal name search unit 13, a unique signal name display unit 14, and a process It is composed of a value storage unit 15, a trend screen display unit 16, and a screen display request unit 17. Further, the screen request from the touch panel 4 mounted on the CRT display device is input to the screen display request unit 17.

Next, the details of each component in the above-mentioned configuration will be described. The process signals Pa to Pm from the plant are taken in at a constant cycle by the process input / output device 1, and the electronic computer 2 recognizes them. Can be converted as a signal. After that, the converted signal is sent to the electronic computer 2.

On the other hand, in the computer 2, the graphic screen display unit 11 receives the screen information of the requested graphic screen from the screen data storage unit 12 when the screen display request unit 17 requests the display of the graphic screen. Take out and send the information to the screen display requesting unit 17,
Process signals Pa to Pm from the process input device 1
Immediate data of is sent at a constant cycle.

When there is a request from the screen display requesting section 17 to display the unique names of the process signals Pa to Pm, the unique signal name display section 14 issues a search request to the unique signal name search section 13 and the search is performed. After receiving the data and converting the received data into information that can be displayed as a list of unique signal names of process values on the graphic screen, the information is output to the screen display requesting unit 17.

When the unique signal name search unit 13 receives a search request from the unique signal name display unit 14, the unique signal name search unit 13 displays the screen data.
All the unique signal names of the process signals displayed on the currently displayed graphic screen are searched for from the data storage unit 12, and the information is output to the unique signal name display unit 17 via the unique signal name display unit 14. ..

The process value storage unit 15 stores all process signals P obtained from the process input device 1 in a constant cycle.
Store a to Pm as trend data.

On the other hand, the trend screen display unit 16 fetches the trend data of the process signal requested by the screen display request unit 17 from the process value storage unit 15, and uses the fetched trend data as a trend graph in the screen display request unit. Enter in 17.

The screen display requesting unit 17 determines a request signal from the touch panel 4 mounted on the surface of the display screen of the CRT display device 3 and displays a display unit that matches the request, that is, a graphic screen display unit. 11, a display signal is output to the unique signal name display unit 14 or the trend screen display unit 16. Then, the screen information returned in response to the request signal is output to the CRT display device 3, and a screen matching the operator's display request is displayed on the display screen.

Next, referring to FIGS. 2 and 3 attached,
Specific display operation of the plant monitoring apparatus according to the embodiment of the present invention will be described in detail below. First, FIG. 2 is an explanatory view showing a state in which the proper names of process signals are actually displayed as a list on the display screen of the CRT display device 3.
FIG. 3 is an explanatory diagram showing a state in which a trend graph is actually displayed on the display screen of the CRT display device 3.

First, referring to FIG. 2, normally, C
A graphic screen as shown in FIG. 2A is displayed on the display screen of the RT display device 3. That is, this graphic screen displays the configuration of the two systems of the monitored plant by means of symbols, and also displays the immediate values of those process values (for example, pump current, flow rate, valve opening, etc.). is doing.

By the way, if the operator wants to display a trend graph for some reason, first,
The graphic screen of the above process including the process value is displayed on the display screen of the CRT display device 3. Then, in this state, in order to make a request to display the list of the unique signal names of the process values currently displayed on the display screen, the soft key (for example, the trend registration key 41) displayed on the lower side of the display screen is displayed. ) Touch.
When the soft key for requesting the unique signal name list is touched, the output signal from the touch panel 4 in FIG. 1 is input to the screen display requesting section 17, and the unique signal displaying instruction is given to the unique signal name displaying section 14 there. It is determined that there is. The unique signal name display unit 14 is provided by the unique signal search unit 1
3 is instructed to search the screen data storage unit 12 for all proper names of the process values on the currently displayed graphic screen. As a result, information on all unique names of the process values found from the screen data storage unit 12 is sent back to the unique signal name display unit 14 and displayed on the CRT display device 3 via the screen display requesting unit 17. Displayed on the screen. FIG. 2B shows a state in which a list of all proper names of the found process values is displayed as an interrupt on the graphic screen.

Next, the name of the process value to be displayed on the same trend graph is selected again from the touch panel 4 from the list of the unique signal names of the process values displayed by interruption (see (b) of FIG. 2). ). That is, in this embodiment, the process value selected by touching the touch panel is displayed in the small window 43 on the right side of the proper name list window 42 displayed on the display screen as an interrupt. As a result, the trend screen display unit 16 of FIG.
Displays the data of the selected process value from the process value storage unit 15 and displays it as a trend graph.

For example, in FIG. 2B, when "Pump No. 1 current", "Pump No. 2 current", "1 system flow rate", "2 system flow rate" is selected as the process value to be displayed in the trend graph, the CRT display is performed. An example of the trend graph displayed on the display screen of the device 3 is shown in the attached FIG. That is, the symbol C1 in the window 44 opened on the left side of the drawing is the trend graph of "Pump No. 1 current",
C2 is the trend graph of "Pump No. 2 current", D1 is the trend graph of "1 system flow rate", and D1 is "2.
The trend graph of "system flow rate" is shown. Further, on the right side of the window 44 of this trend graph, the proper name of the process value displayed as the trend graph is shown together with its immediate value. For example, "Pump No. 1 current" is 10.4A and "Pump No. 2 current" is 13.4A. In addition, the immediate value of "1 system flow rate" is 81.2 m ³
/ M, and 99.5 as the immediate value of "2 system flow rate".
m ³ / M is shown.

[0028]

As is apparent from the above detailed description,
According to the present invention, since the unique signal name of the process value is displayed in correspondence with the related process equipment and the graphic screen on which the process value is displayed on one screen, the name of the process signal to be displayed as a trend graph can be easily displayed. You can find out and find out. Therefore, the operator does not have to memorize the proper name of the process signal or search for the proper name as in the prior art.

Further, according to the plant monitoring apparatus of the present invention, the process signal to be displayed in the trend graph can be arbitrarily selected by using the touch panel from the list of unique signal names displayed on the graphic screen by interruption. The trend graph of combinations can be selected by simple touch operation without the need to manually enter the unique name using a keyboard, etc., greatly reducing the operator's burden and thus the plant monitoring efficiency. It is possible to improve.

[Brief description of drawings]

FIG. 1 is a block diagram showing a general configuration of a plant monitoring apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a graphic display screen including a proper name display operation of a process signal on a CRT display device of the plant monitoring device.

FIG. 3 is a diagram showing an example of a trend graph display of a process signal on a CRT display device of the plant monitoring device.

[Explanation of symbols]

 1 Process Input Device 2 Electronic Computer 3 CRT Display Device 4 Touch Panel 11 Graphic Screen Display Unit 12 Screen Data Storage Unit 13 Unique Signal Name Search Unit 14 Unique Signal Name Display Unit 15 Process Value Storage Device 16 Trend Screen Display Unit 17 Screen Display Request Unit

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location // G06F 15/72 360 9192-5L

Claims (11)

[Claims] 1. A process input device for fetching a process signal at a constant cycle, an electronic computer for fetching a process signal from the process input device, performing a predetermined calculation and outputting graphic screen information, and a computer operated by the computer. In a plant monitoring device equipped with a display device that captures the graphic screen information and displays it as a graphic screen, the electronic computer further includes a screen data storage unit that stores the graphic screen information, and is displayed on the display device. The unique signal name of the process signal on the graphic screen, the unique signal search unit that searches the screen data storage unit where the graphic screen information is saved, and the unique signal name information obtained from the unique signal search unit And a unique signal name display section for displaying an interrupt on the display device. A plant monitoring device characterized by being provided. 2. The plant monitoring device according to claim 1, wherein a touch panel device for selecting a proper name of the interrupt-processed process signal is provided on a front surface of a display screen of the display device. And plant monitoring equipment. 3. The plant monitoring apparatus according to claim 1, wherein the unique name display unit of the electronic computer displays a list of unique signal name information obtained from the unique signal search unit on the display device. A plant monitoring device comprising a name display unit. 4. The plant monitoring device according to claim 1, wherein the electronic computer includes a trend screen display unit that outputs a trend graph screen based on a process signal from the process input device. Plant monitoring equipment. 5. The plant monitoring device according to claim 4, wherein the electronic computer further includes a process value storage unit that stores a value of a process signal from the process input device. .. 6. The plant monitoring device according to claim 4, further comprising a display selection device, wherein the trend screen display unit outputs a trend graph screen by selection output from the display selection device. Plant monitoring equipment. 7. The plant monitoring device according to claim 6, wherein the display selection device includes a touch panel attached to a front surface of a display surface of the display screen. 8. The plant monitoring apparatus according to claim 6, wherein the electronic computer further requests a trend graph screen display from the trend screen display unit in response to a selection output from the display selection unit. A plant monitoring device comprising: 9. The plant monitoring apparatus according to claim 8, wherein the electronic computer further outputs a search request signal to the unique signal name display unit in response to a unique signal name search request from the display selecting unit. A plant monitoring device comprising a signal name display unit. 10. The plant monitoring device according to claim 1, wherein the display device is a CRT display device. 11. A process input device for receiving a process signal at a constant cycle, an electronic computer for inputting a process signal from the process input device to perform a predetermined calculation and output display information, and a display from the electronic computer. In a plant monitoring device comprising a display device for displaying a process state of a plant as a screen by information, and a display selection device mounted on the front surface of the display screen of the display device, the electronic computer is a plant from the input process signal. , A function of displaying the inputted process signal in a trend graph, and a display selection function of selecting the graphic display function and the trend graph display function based on a request signal from the display selection device. And, the process signal is displayed on the display device as a graphic display. A plant monitoring device having a function of interrupting and displaying a unique signal name of a displayed process signal based on a request signal from the display selection device when shown.