JPH0254121A - Plant event recognition apparatus - Google Patents

Abstract

PURPOSE:To easily alter a part of an event recognition program within a short time by a field technical expert by processing the detection values of various sensors incorporated in a plant by a calculator such a microcomputer. CONSTITUTION:A plant data processing part MO takes the data such as temp. or the like detected by various sensors in a computer to send measured value data D2 to an event recognition processing part M1. A recognition processing procedure program memory part FO stores a recognition processing program described by a judge operation element necessary for quantitatively judging the detection value of each of the sensors and a logical formula necessary for estimating the generation of the event concerned from a judge reference value and each judge result to sent recognition processing procedure data D4 before rewriting to a program rewriting processing part M2 which in turns performs the rewriting of the program stored in the memory part FO. A control output processing part M3 displays the event D5 recognized by the processing part M1 in the outside or directly outputs a signal necessary for a plant. By this method, an event recognition program is partially rewritten on the spot.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) This invention processes the detection values of various sensors incorporated in the plant with a measuring device such as a minicomputer, thereby providing information during plant operation. This invention relates to an improvement of a plant event recognition device that recognizes various events that occur in a plant.

(Prior Art) This type of plant event recognition device is widely adopted in power generation plants, various manufacturing plants, etc. In addition, by processing the detected values of digital sensors (which indicate whether pumps and heaters are activated or stopped, and whether valves are open or closed) using a computer, various events that occur during plant operation (process start, process route r, It is designed to recognize process abnormalities, etc., notify the operator of the results, and directly issue various commands to the plant.

Conventionally, for this type of plant event m''a@H, an event recognition program executed by a computer has typically been created using a so-called compilation method.

In other words, once a recognition method for each event is determined according to the operating specifications of a famous plant, a source program using BASIC language, C language, etc. is created based on each event recognition method by a specialized software engineer, and this source program is The program is run through a compiler tailored to the operating system of each computer and converted into an A project program, and this object program is
It is incorporated into the llll computer.

(Problem to be Solved by the Invention) However, in such conventional plant event recognition devices, the object program obtained by compilation can be directly executed on the operating system of the computer, so the processing speed is fast. On the other hand, if any event recognition method is changed due to a change in plant operating specifications, it is generally difficult to extract only that part from the object program and change it, and as a result, it is difficult to extract only that part from the object program and change it again. I had to call in a software engineer and recreate the program from the source.
This has led to problems such as the need to stop plant operation for a long time.

This invention was made in order to solve the above-mentioned problem, and its purpose is that when it becomes necessary to change any of the event recognition programs due to changes in plant operating specifications, etc. An object of the present invention is to provide a plant event recognition method in which an event recognition program can be easily partially rewritten by an on-site engineer, etc., without having to stop the plant operation for a long time. .

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention uses a computer to process the detected values of various sensors installed in the plant, thereby reducing the amount of data generated during plant operation. In the plant event recognition 'IA@'II, which recognizes various events that occur,
The event recognition program executed by the computer includes a judgment operator necessary to quantitatively judge each sensor detection value, two judgment base values, and a logical formula necessary to infer the occurrence of a corresponding event from each judgment result. and a recognition processing program that decodes the recognition processing procedure command program and performs the corresponding judgment processing and inference processing, and the recognition processing procedure command program is separated on the user side. It is characterized by being rewritable.

(Operation) According to such a configuration, if it is necessary to partially change the event recognition program, it can be accommodated! Judgment operator required to quantitatively judge each sensor detection value in the detection processing procedure command program.

All you have to do is perform the necessary rewriting operations using the judgment reference values and the logical formulas necessary to infer the occurrence of the corresponding event from each judgment result, making it easy for on-site technology with limited knowledge of general-purpose programming languages such as BASIC If and C. Even if you are a person, you can make changes easily and quickly, and
It is possible to respond to changes in the event recognition method without stopping plant operation for a long period of time.

(Embodiment) FIG. 1 is a block diagram conceptually showing a plant event recognition device according to the present invention.

In the figure, the plant data processing unit MO processes analog data such as temperature, pressure, and level detected by various sensors, or the operation of pumps and heaters.

It has the function of importing digital data indicating stoppage, valve opening/closing, etc. into the computer via an input interface, and actually consists of hardware such as input buffers and A/D converters, and the software that operates them. It is made up of.

The recognition processing procedure command program storage unit FO is composed of a rewritable memory of a computer, and this memory stores the judgment reference value of judgment operator 1 necessary for quantitatively judging each sensor detection value and each judgment result. A recognition processing procedure instruction program written in logical expressions necessary to infer the occurrence of a corresponding event is stored.

FIG. 4 shows an example of this recognition processing procedure command program.

This recognition processing procedure command program is made up of a series of descriptions of recognition processing procedure information INF1 to INFn for each event, and the contents of the Fa recognition processing procedure information for each event valve include the plant i elephant name FN, Judgment target measurement value name PN, judgment reference value C2 judgment logical formula PL.

It is composed of a plant event recognition logical formula FL.

On the other hand, as shown in FIG. 1, the event recognition processing unit M1 includes a recognition processing program that decodes the above-mentioned recognition processing procedure instruction program and performs the corresponding judgment processing and inference processing, and computer performance software that executes this program. The details will be explained later with reference to FIG. 2.

The control output processing section M3 displays the event recognized by the event recognition processing section M1 externally via a CRT, or directly outputs a necessary signal to the plant. It is composed of a man-machine interface such as a CRT, an output buffer 7 for the interface, and the like.

The program B conversion processing unit M2 is for rewriting the program stored in the recognition processing procedure instruction program storage unit FO, and specifically consists of a man-machine interface such as a CRT and a keyboard, and necessary software. , the details of which will be explained later with reference to FIG.

In FIG. 1, Dl is recognition processing procedure information for one event, D2 is measured value data, D3 is recognition processing procedure information after rewriting, D4 is recognition processing procedure information before rewriting, and D5 is event recognition result. .

Next, FIG. 2 is a flowchart schematically showing the contents of the II processing program executed by the event recognition processing section M1. I will explain about it.

When the program is started, the recognition processing procedure command program memory unit FO stores - event valve recognition processing procedure information D1.
is read out (step 201), and then measured value data D2 is read out from the plant data processing unit MO (step 202).

That is, to explain using the example of FIG. 4, first INFl is read out, and then each sensor detection value corresponding to the determination target measurement value name PN is read out.

Next, while advancing the data numbers sequentially from (1) to (n), the content of each sensor detection value is regularly determined using the determination operator 1 determination MQ and the value (steps 203 to 206
).

That is, to explain using the example of FIG. 4, Al1<10.0
．． DI3=O, . . . each sensor detects lAl2.
The contents of DI3... are determined in advance.

Once the sensor detection values for data numbers (1) to (n) have been determined in this way, plant events are then determined based on the comparison results obtained above (step 207).

That is, to explain using the example of FIG. 4, by substituting the judgment results of each sensor detection value described above into the plant event recognition logical formula FL, the occurrence or non-occurrence of the event name FN is determined in a jlIIj manner. It is.

When this judgment process is completed, the event recognition result D5, which is the judgment result, is sent to the control output processing unit M3, as well as to the event recognition result storage unit F1 and the event vX recognition result display CRTCI, whereby the event recognition result is Corresponding signals are sent to the plant, event recognition results are stored and displayed for the operator.

Thereafter, the same processing as described above is performed for the recognition processing procedure information lNF2 to INFn (steps 201 to 208),
Does the program end with the completion of the most *gx processing procedure information INFn processing? do.

Next, FIG. 3 is a flowchart schematically showing the structure of the rewriting processing program executed by the program rewriting processing section M2, and the operation of the program rewriting processing section M2 will be described below with reference to this flowchart.

When the program starts, the first thing that happens is an event! ! Menu processing for the identification processing procedure command program is performed (step 301). .

In this menu processing, the event name data 86 is read from the recognition processing procedure command program storage unit FO, converted to event name display data D7, and displayed on the conversation CRTC 1, and key input from the conversation CRT is performed. receives the menu selection information D8, confirms the instructions from the operator,
Thereafter, data corresponding to the instruction is displayed on the conversation CRTCI.

Thereafter, the event recognition processing procedure command program is rewritten (step 302). In this rewriting process, conversational C
Event recognition processing procedure information D obtained from RTC1 using key human power, etc.
9, converts it into storage data D10, and writes it into the recognition processing procedure instruction program storage section FO, thereby partially changing the recognition processing procedure instruction program.

Once the above processing has been performed for all event names (step 303), the program ends.

In this way, in the device of this embodiment, the event recognition program executed by the computer is configured to include the determination operator (PL) and determination reference value (PL) necessary for quantitatively determining each sensor detection value.
C) and logical formulas (FL) necessary to infer the occurrence of a corresponding event from each judgment result, and the recognition processing procedure command programs INF1 to INFn are decoded. It is separated into a recognition processing program (corresponding to steps 201 to 208 in Figure 112) that performs the corresponding judgment processing and inference processing, and performs elephant recognition processing using an interpreter method rather than a so-called compiler method.

Further, among the W1 recognition processing procedure command program and the recognition processing program, the II processing procedure command program can be arbitrarily rewritten by the program rewriting processing section M2.

Here, as is clear from the example in FIG. 4, the recognition processing procedure command program differs from general-purpose programming languages such as BASIC language and C language, and uses mathematical symbols (<) that can be easily understood by field engineers.

-6〉), logical symbols (AND, OR>, etc.), and therefore, if there is a change in any event aS method due to changes in plant operation specifications, etc., a specialized software engineer This allows on-site engineers and others to easily make changes without having to call the system, and to respond to changes in the event recognition method without having to stop the plant for an extended period of time.

[Effects of the Invention] As is clear from the above explanation, according to the present invention, in this type of plant event recognition device, when a change occurs in any event recognition method due to a change in the operating specifications of the plant, etc. This allows on-site engineers to easily and quickly make partial changes to the event recognition program without requiring a specialized software engineer. It is possible to respond to changes in event recognition methods.

[Brief explanation of the drawing]

FIG. 1 is a block diagram schematically showing the configuration of a plant event recognition device according to the present invention, FIG. 2 is a flowchart schematically showing the configuration of the recognition processing procedure command program, and FIG. 3 is a block diagram schematically showing the configuration of the recognition processing procedure command program. A flowchart schematically showing the configuration of a rewriting program for rewriting, and FIG. 4 is an explanatory diagram showing an example of the language form of the recognition processing procedure instruction program. FO... Recognition processing procedure command program storage unit MO...
・Plant data processing unit Ml...Event recognition processing unit M2...Program rewriting processing unit M3...Control output processing unit rNF1~INFn...-Event recognition processing procedure information FN ...Plant event name PM...Judgment target measurement value name C...Judgment reference value PL...Judgment logical formula FL...Plant event recognition logical formula

Claims (1)

[Scope of Claim] A plant event recognition device that recognizes various events that occur during plant operation by processing detected values of various sensors incorporated in the plant with a computer, comprising: The event recognition program is written using the judgment operators necessary to quantitatively judge each sensor detection value, the judgment reference values, and the logical expressions necessary to infer the occurrence of the corresponding event from each judgment result. The recognition processing procedure command program is separated into a recognition processing procedure command program and a recognition processing program that decodes the recognition processing procedure command program and performs the corresponding judgment processing and inference processing, and the recognition processing procedure command program is made rewritable by the user. A plant event recognition device characterized by.