JPH08247805A - Trend retrieving device and treand graph device - Google Patents

Abstract

PURPOSE: To shorten the searching time by providing a means for storing data from a plant, and for collecting and editing all process data, a searching condition setting and inputting means, a trend data editing means and an image display controlling means. CONSTITUTION: A process data input part 20 receives process data from operating equipments, detecting equipments and the like at the job site. A process data collecting and processing part 21 linearizes the input data which is then transmitted to a memory part 22 in accordance with a processing period. A designated process data collecting part 24 collects data for trend display from the memory part 22 which concern a process in trend display. In the case of displaying a trend graph, an all process data collecting and editing means 1 collects and edits data from the memory part 22, and is stored in a data file part 2. Terms for search are inputted from a window screen on a CRT screen display means 15 in accordance with desired display terms. The screen input search term control means 3 searches the data, a trend data editing means 4 collects and edits the data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trend graph device which manages a history of each process state of a plant using a computer, and in particular, saves time and effort for searching the trend graph, shortens the investigation time, and analyzes the plant state. The present invention relates to a trend search device and a trend graph device capable of significantly reducing the burden on an engineer for process analysis.

[0002]

2. Description of the Related Art Generally, a trend graph device using a computer used as a man-machine interface in monitoring and control systems in industrial fields such as process automation and factory automation, and in social system fields such as water and sewage and buildings. It stores and displays a continuous change of a signal managed by a computer, and has conventionally processed various data by a method shown in FIG. 3, for example.

FIG. 3 is a block diagram showing a conceptual configuration example of a conventional trend graph device of this type. In FIG. 3, the trend graph process is performed as follows.

That is, in a monitoring / control system in the field of social systems such as PA and FA, when a trend graph is displayed on the screen using a computer used as a man-machine interface, first, the process data input unit 2
With 0, process data is input from the operation device, detection device, etc. on the site side.

Then, the input data is subjected to data conversion such as linearization processing by the process data collection and processing unit 21, and transferred to the memory unit 22 in accordance with the processing cycle.

On the other hand, the process for which the trend is desired to be displayed is set in advance by the trend display process designating section 23, and the designated process data collecting section 2
4, data for trend display is collected from the memory unit 21.

The collected data is edited into trend data by the trend data editing section 25 and stored in the data file 26. Then, of the processes set in advance by the trend display process designating unit 23, the data desired to be displayed on the screen is designated from the CRT screen 27, and the screen display control unit 28 makes a graph.

Further, the graph processed data is
It is displayed on the CRT screen 27. By the way, in the above-mentioned trend graph device, when performing data analysis / analysis, in order to investigate and grasp the state of the plant, the operation monitoring screen is displayed by an operation from the CRT screen 27, and the investigation is performed. You have to randomly find the target area you want to do. Therefore, it takes a lot of time and labor to analyze the plant state and the process.

The data displayed on the CRT screen 27 is limited to a preset process. These things impose a heavy burden on the engineer when he or she analyzes the operating state of the plant or the process analysis.

[0010]

As described above, the conventional trend graph device has a problem that an engineer's burden is large when performing plant state analysis and process analysis. An object of the present invention is to retrieve trend data at the time when a process condition drawn by an engineer is satisfied when necessary, display a necessary trend graph on a screen of a display device, and save time and effort for trend graph search. , It is to provide a trend search device capable of shortening the research time.

Another object of the present invention is to retrieve trend data at the time when the process condition drawn by the engineer is satisfied when necessary, display the necessary trend graph on the screen of the display device, and perform trend graph search. It is an object of the present invention to provide a trend graph device capable of saving labor, shortening an investigation time, and remarkably reducing an engineer's burden for analyzing a plant state and process analysis.

[0012]

In order to achieve the above object, first, in the invention corresponding to claim 1, all processes for collecting and editing all process data input from a plant and storing them in a data file. From the data file based on the data collection / editing means, the search condition setting input means for inputting the search conditions for searching the data to be displayed on the screen, and the search condition input by the search condition setting input means. It comprises trend data editing means for retrieving relevant data, collecting and editing trend data, and screen display control means for graphing the trend data edited by the trend data editing means and displaying it on the screen of the display device. .

On the other hand, in the invention corresponding to claim 2, each process data from the plant is input, and only the data designated in advance is collected and edited as the data for displaying the trend, and the trend is displayed on the screen of the display device. In the trend graph device configured to do so, all the process data input from the plant are collected and edited, and all the process data collection / editing means for storing in the data file and the data to be displayed on the screen are searched. Based on the search condition setting input means for inputting the search condition, the trend data editing means for searching the relevant data from the data file and collecting and editing the trend data based on the search condition input by the search condition setting input means, and the trend The trend data edited by the data editing means is graphed and displayed on the screen of the display device. Comprising the trend retrieval device comprising a screen display control means for displaying. Here, it is particularly desirable that at least one search condition can be input as the search condition setting input means.

[0014]

Therefore, first, in the trend retrieval device of the invention according to claim 1, after collecting and editing all process data input to the computer, it is stored in a data file so that it can be retrieved at any time. By optionally setting the process conditions drawn by the engineer when necessary, the trend data at the time when those conditions are satisfied can be searched and the necessary trend graph can be displayed on the screen of the display device. Becomes

As a result, it is possible to save the trouble of searching the trend graph and shorten the investigation time. On the other hand, in the trend graph device of the invention according to claim 2, by directly inputting the conditions drawn on the screen that are desired to be displayed on the screen, the trend data at the time when the conditions are met are retrieved from the data file. This saves time and effort for searching the trend graph and shortens the research time.

As a result, the burden on the engineer for analyzing the plant condition and the process can be reduced. In addition, collect all process data of the plant,
By editing and storing it in a data file, it is no longer necessary to manage data for a limited number of preset processes in groups as in the past, and all data can be referenced at any time as long as it is process data stored in a computer. As a result, it is possible to remarkably increase the examination material when performing the plant state analysis and the process analysis.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing a conceptual configuration example of a trend graph device to which a trend search device according to the present invention is applied. The same elements as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted. Will be described only.

That is, as shown in FIG. 1, the trend graph device of this embodiment collects and edits all process data, a data file 2, and a screen input search control means 3.
And the trend data editing means 4, and in addition to the CRT screen 27 and the screen display control section 28, a CRT screen display means 5 and a screen display control means 6 are newly added respectively.

Here, the all process data collecting / editing means 1 collects and edits all process data input from the plant and stores them in the data file 2.
Further, the CRT screen display means 5 is the CRT screen 2 described above.
In addition to the function of No. 7, it has a search condition setting input function for inputting a search condition for searching data to be displayed on the screen.

On the other hand, the screen input search control means 3 is a CRT.
Based on the search conditions input by the screen display means 5,
The data file 2 is searched for relevant data. The trend data editing means 4 collects and edits trend data from the data searched by the screen input search control means 3.

In addition to the function of the screen display control section 28 described above, the screen display control means 6 graphs the trend data edited by the trend data editing means 4 and displays it on the screen of the CRT screen display means 5. It has a function to do.

The trend search device is provided with the additional functions of all process data collection / editing means 1, data file 2, screen input search control means 3, trend data editing means 4, CRT screen display means 5 and screen display control means 6. Are configured.

Next, the operation of the trend graph device of this embodiment constructed as described above will be described. PA and FA
In the monitoring and control system in the field of social systems such as
When a trend graph is displayed on a screen using a computer used as a man-machine interface, first, the process data input unit 20 inputs process data from an operation device, a detection device, or the like on the site side.

Then, the input data is subjected to data conversion such as linearization processing by the process data collection and processing unit 21, and transferred to the memory unit 22 according to the processing cycle.

On the other hand, the process for which the trend is desired to be displayed is set in advance by the trend display process designating unit 23, and the designated process data collecting unit 2
4, data for trend display is collected from the memory unit 21.

The trend data of the collected data is edited by the trend data editing unit 25 and stored in the data file 26. Then, of the processes set in advance by the trend display process designating unit 23, the data desired to be displayed on the screen is designated from the CRT screen 27, and the screen display control means 6 graphs the data.

Further, this graph-processed data is converted into
It is displayed on the screen of the CRT screen display means 5. On the other hand, CR
When a trend graph drawn by an engineer is displayed on the screen of the T screen display means 5 when necessary, first, all process data as a base is collected from the memory unit 22 by all process data collection / editing means 1. Collect, edit, and store in data file 2.

Next, the search condition is arbitrarily input from the window screen on the CRT screen display means 5 according to the trend condition drawn on the screen to be displayed on the screen. Then, the screen input search control means 3 searches the data file 2 for data based on the search conditions input from this screen, and the trend data editing means 4 collects the trend data.
Edited and graphed by the screen display control means 6,
The graph-processed data is displayed on the CRT screen display means 5
Displayed on the screen of.

Next, the operation of displaying the trend graph drawn by the engineer on the screen of the CRT screen display means 5 when necessary will be described more specifically with reference to the flow chart shown in FIG. To do.

First, when there is one search condition, for example, if a certain monitoring point is TAG ***, this TA
The process value (PV value) of G *** is the upper limit setting value (PH
When investigating the process state at the time of reaching the value), in the search condition input step S1, the search condition window 7 is called on the screen of the CRT screen display means 5 and the search condition is set to "TAG *****. PH>". 1 "is registered by the keyboard, and in the data retrieval step S2, data when the process value (PV value) of TAG *** reaches the upper limit set value (PH value) is retrieved from the data file 2.

Then, the relevant data is collected and edited in the data editing step S3, and in the CRT display step S4, these data are graphed by controlling the screen display, and the trend graph 8 is displayed on the screen of the CRT screen display means 5. Display as.

Next, when there are a plurality of search conditions, for example, if the third monitoring point is TAG *** 3,
When the digital input value from this TAG *** 3 is in ON state, this state is monitored input value (FI value) of TAG *** 3.
Is 1.

Then, in this state, the process value (PV value) of TAG *** 1 which is the first monitoring point exceeds 80, or TAG * which is the second monitoring point.
When investigating when and how the case where the process value (PV value) of ** 2 exceeds 100, the CRT screen display means 5 is executed in the search condition input step S1.
Call the search condition window 7 of, and set the search condition to "TAG.
*** 1. PV> 80OR TAG *** 2. PV> 1
00 AND TAG *** 3. FI1 = 1 "is registered with the keyboard, and the data at the time when the search condition is satisfied is searched from the data file 2 in the data search step S2.

Then, the relevant data is collected and edited in the data editing step S3, and the CRT display step S4.
In the above, these data are graphed by controlling the screen display and displayed as a trend graph 8 on the screen of the CRT screen display means 5.

As described above, in this embodiment, each process data from the plant is input, only the data designated in advance is collected and edited as the data for trend display, and the trend is displayed on the CRT screen. In the trend graph device described above, all process data collection / editing means 1 that collects and edits all process data input from the plant and stores it in the data file 2, and a search for searching the data to be displayed on the screen. A CRT screen display means 5 having a search condition setting input function for inputting conditions, and a screen input search control means 3 for searching the data file 2 for corresponding data based on the search condition input by the CRT screen display means 5, A train that collects and edits trend data from the data retrieved by the screen input retrieval control means 3. A trend retrieving device including a data editing means 4 and a screen display control means 6 for displaying the trend data edited by the trend data editing means 4 on a screen of the CRT screen display means 5 is provided. is there.

Therefore, when performing the analysis of the operating state of the plant and the data analysis, in order to investigate the trend for knowing when the engineer has fallen into the process state drawn in his / her mind, the CRT screen display means can be used when necessary. Since search conditions can be set and input on the screen and the relevant trend data can be searched based on the search condition and displayed on the screen of the CRT screen display means 5, it is possible to save the trouble of searching the trend graph. In addition, it is possible to shorten the survey time.

As a result, the burden on the engineer for analyzing the plant condition and the process can be remarkably reduced. Further, since all the process data of the plant are collected, edited and stored in the data file 2, the data management for the limited process of the preset group unit is no longer necessary as in the conventional method, and the computer does not have to manage the data. Since it is possible to refer to all the process data that have been captured at any time, it is possible to significantly increase the examination materials when performing plant state analysis and process analysis.

[0038]

As described above, according to the invention corresponding to claim 1, all process data collecting / editing means for collecting and editing all process data input from the plant and storing the process data in a data file, Based on the search condition setting input means for inputting the search conditions for searching the data to be displayed on the screen and the search condition input by the search condition setting input means, the corresponding data is searched for from the data file and the trend The trend data editing means for collecting and editing the data and the screen display control means for graphing the trend data edited by the trend data editing means and displaying it on the screen of the display device are provided. The trend data at the time when the process conditions drawn in the above are satisfied are searched and the necessary trend graph is displayed. Display on the screen, along with eliminating the need of trend graph search, it can be provided capable trends retrieval device thereby shortening the study time.

On the other hand, according to the invention corresponding to claim 2,
In the trend graph device that inputs each process data from the plant, collects and edits only the data specified in advance as the data for trend display, and displays the trend on the screen of the display device, all the data input from the plant All process data collection / editing means that collects, edits, and stores the process data of
Based on the search condition setting input means for inputting the search conditions for searching the data to be displayed on the screen and the search condition input by the search condition setting input means, the corresponding data is searched for from the data file and the trend Since the trend data editing means for collecting and editing data and the trend display data edited by the trend data editing means are graphed and displayed on the screen of the display device, the trend search device is provided. When necessary, the engineer searches the trend data at the time when the process conditions drawn in his head are satisfied and displays the necessary trend graph on the screen of the display device, saving the trouble of searching the trend graph and shortening the investigation time. Can significantly reduce the burden on engineers for plant condition analysis and process analysis Trend graph device can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a trend graph device to which a trend search device according to the present invention is applied.

FIG. 2 is a flowchart for more specifically explaining the operation of the trend graph device of the embodiment.

FIG. 3 is a block diagram showing a conceptual configuration example of a conventional trend graph device.

[Explanation of symbols]

 1 ... All process data collection and editing means, 2 ... Data file, 3 ... Screen input search control means, 4 ... Trend data editing means, 5 ... CRT screen display means, 6 ... Screen display control means, 20 ... Process data input section , 21 ... Process data collection and processing unit, 22 ... Memory unit, 23 ... Trend display process designation unit, 24 ... Designated process data collection unit, 25 ... Trend data editing unit, 26 ... Data file.

Claims (4)

[Claims] 1. A process data collection / editing means for collecting and editing all process data input from a plant and storing it in a data file, and a search condition for searching data to be displayed on a screen. Search condition setting inputting means, trend data editing means for searching the data file, collecting and editing trend data based on the search condition input by the search condition setting inputting means, and the trend data A trend search device comprising: screen display control means for graphing trend data edited by the editing means and displaying it on the screen of the display device. 2. A trend graph device configured to input process data from a plant, collect and edit only data designated in advance as data for trend display, and display the trend on a screen of a display device. All process data collection / editing means that collects and edits all process data input from the plant and stores it in a data file, and search condition setting that inputs search conditions for searching the data to be displayed on the screen Input means, trend data editing means for searching the data file, collecting and editing trend data based on the search condition input by the search condition setting input means, and editing by the trend data editing means Graph the trend data that has been created and display it on the screen of the display device. Trend graph apparatus characterized by comprising: a plane display control means, the trend retrieval device made of. 3. The trend search device according to claim 1, wherein at least one search condition can be input as the search condition setting input means. 4. The trend graph device according to claim 2, wherein at least one search condition can be input as the search condition setting input means.