TWI808504B - Display device, display method, control device and computer program - Google Patents

Abstract

[Problem] Provide a display device, a display method, a control device, and a computer program that can easily add new guidance information even for inexperienced operators. [Solution] Provide a display device with a display screen. Warnings are issued by displaying warnings related to the operating conditions of the factory on the display screen of the display device. A region for adding the guidance information displayed at this time is displayed on the display screen.

Description

Display device, display method, control device and computer program

The present invention relates to a display device, a display method, a control device and a computer program. This application claims priority based on Japanese Patent Application No. 2020-173138 filed on October 14, 2020. The entire content of this Japanese application is incorporated by reference in this specification.

Conventionally, sensors are installed in monitored equipment such as factories, and the operation status of the monitored equipment is monitored based on the data obtained by the sensors. When an abnormality occurs in the monitoring target equipment, an alarm is issued and a guidance message is displayed that describes the countermeasures to support the operator. Guidance information is based on the knowledge and experience of skilled workers, carefully researching various information, and spending a lot of time to create.

Also, Patent Document 1 describes a "factory monitoring device" that creates and displays "recording operations performed in each operating state" "factory operation history storage unit" (paragraph [0038]) and "classifying operation history for each predetermined operating state and recommending actions for each operating state, that is, operation guidance data" (paragraph [0040]). [Prior Art Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2014-32633

[Problem to be solved by the invention]

However, guide information created based on the knowledge of a skilled worker, etc., naturally has a high personal attribute. Therefore, inexperienced operators cannot easily create the same guidance information.

In addition, the factory monitoring device described in Patent Document 1 initially only displays recommended operations to be performed in routine operations to exclude machines under inspection from monitoring targets based on past operation histories. On the other hand, there are many cases where the processing measures at the time of alarming are not accompanied by the factory operation. Therefore, it is not easy to create guidance information when an alarm is issued based on the past operation history of the factory.

Furthermore, the factory monitoring device described in Patent Document 1 discloses "selecting the operation guidance pattern to be referred to" from the "operation guidance selection pattern list" (paragraph [0047], FIG. 6), and as a result, the operation guidance pattern is only obtained from the past factory operation history, and does not allow new information to be added.

Therefore, an object of the present invention is to provide a display device, a display method, a control device, and a computer program that can easily add new guidance information even for inexperienced operators. [Technical means to solve the problem]

The present invention provides a display device which has a display screen and is configured to display on the display screen an area for adding guidance information, which is guidance information to be displayed when a warning related to the operation of a factory occurs.

Furthermore, the guide information may be displayed in the first area of the display screen, and the area for adding the guide information may be displayed in the second area parallel to the first area of the display screen.

Furthermore, at least one word included in the information describing the past operation status of the factory may be displayed, and the information including the selected word may be displayed on the display screen.

Furthermore, the word may be extracted by performing the step of calculating the feature value of at least one word based on the information recording the past operating conditions of the plant and the step of calculating the significance of at least one word based on the feature value of the word, and displaying the word together with the significance of the word on the display screen.

The present invention provides a display method, which includes the step of displaying an area for adding guidance information on a display screen of a display device. The guidance information is guidance information to be displayed when a warning related to the operation of a factory occurs.

The present invention provides a control device, which controls a display device having a display screen, and is configured to display on the display screen an area for adding guidance information, which is guidance information to be displayed when a warning related to the operation of a factory occurs.

The present invention provides a computer program, which causes a computer to execute the step of displaying an area for adding guidance information on the aforementioned display screen. The guidance information is guidance information to be displayed when a warning related to the operation of a factory occurs. The aforementioned computer is used to control a display device equipped with a display screen.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are examples for explaining the present invention, and the present invention is not intended to be limited to these embodiments. The equipment to be monitored using the present invention includes factories. With regard to factories, for example, power plants including boilers, incineration plants, chemical plants, waste water treatment plants, etc., are targeted for obtaining process data. In addition to the examples of process data of power plants described in the following embodiments, for example, process data of incineration plants for incineration of waste include the amount of air fed into the incinerator, the temperature of the air fed into the incinerator, the temperature and composition of the gas at the furnace outlet, and measurement data such as temperature, pressure, flow rate, and combustion state of each part measured by sensors, etc. For example, the process data of a chemical plant includes temperature difference between processes or between two or more thermocouples, operating pressure, generated logistics parameters (speed, density, etc.), cooling water flow, output measured value, valve sensor data, etc. For example, the process data of a wastewater treatment plant includes the amount of raw water in and out of the water tank output from each sensor and each electric meter, the water level, the quality of treated water, and the operation volume of various pumps and other machine operations.

[explanation of the factory] FIG. 1 is a schematic diagram showing the overall structure of a factory 1, which is an example of a monitoring object to which the present invention is applied. For example, the plant 1 of this embodiment is a power plant equipped with a circulating fluidized bed boiler (circulating fluidized bed type) that generates steam by burning fuel while circulating a circulating material such as silica sand flowing at a high temperature. As the fuel of the factory 1, other than fossil fuels such as coal, for example, non-fossil fuels (woody biomass, waste tires, waste plastics, sludge, etc.) can be used. The steam produced in the plant 1 is used to drive the turbine 100 .

The factory 1 is configured to combust fuel in the furnace 2, separate circulating material from the exhaust gas by the cyclone 3 functioning as a solid-gas separation device, and return the separated circulating material to the furnace 2 to circulate it. The separated recycled material is returned to the lower part of the furnace 2 through the recycled material recovery pipe 4 connected to the bottom of the cyclone 3 . In addition, the lower portion of the circulating material recovery pipe 4 is connected to the lower portion of the furnace 2 through a ring seal portion 4a in which the flow path is narrowed. Thereby, a predetermined amount of recycled material is stored in the lower portion of the recycled material recovery pipe 4 . The exhaust gas from which the circulating material has been removed by the cyclone 3 is supplied to the rear flue 5 through the exhaust flow path 3 a.

The boiler has a furnace 2 for burning fuel and a heat exchanger for generating water vapor and the like using heat obtained by combustion. A fuel supply port 2a for supplying fuel is provided in the middle of the furnace 2, and a gas outlet 2b for discharging combustion gas is provided in the upper part of the furnace 2. The fuel supplied to the furnace 2 from a fuel supply device not shown is supplied to the inside of the furnace 2 through the fuel supply port 2a. Moreover, the furnace wall of the furnace 2 is provided with the furnace wall pipe 6 for heating boiler feed water. The boiler feed water flowing through the furnace wall tubes 6 is heated by combustion in the furnace 2 .

In the furnace 2, the solid matter including the fuel supplied from the fuel supply port 2a flows by the combustion/flow air introduced from the lower air supply pipe 2c, and the fuel flows while burning at, for example, about 800~900°C. The combustion gas generated in the furnace 2 is introduced into the cyclone 3 along with the circulating material. The cyclone 3 separates the circulating material and gas through centrifugal separation, returns the separated circulating material to the furnace 2 through the circulating material recovery pipe 4, and sends the combustion gas from the exhaust gas flow path 3a to the rear flue 5.

In the furnace 2, a part of the circulating material called the furnace tool material stays at the bottom. The machine tool material sometimes contains coarse-grained machine tool materials and combustion impurities that are not suitable for circulation, and sometimes poor flow occurs due to these machine tool materials that are not suitable for circulation. Therefore, in order to suppress poor flow, in the furnace 2, the machine tool materials in the furnace are continuously or intermittently discharged to the outside from the discharge port 2d at the bottom. The discharged machine tool materials are resupplied to the furnace 2 or directly discarded after removal of unsuitable substances such as metals and coarse particles on a circulation pipe not shown in the figure. The circulating material in the furnace 2 circulates inside the circulation system composed of the furnace 2 , the cyclone 3 and the recycling material recovery pipe 4 .

The rear flue 5 has a flow path for the gas discharged from the cyclone 3 to flow into the rear stage. The rear flue 5 has a superheater 10 for generating superheated steam and an economizer 12 for preheating boiler feed water as an exhaust heat recovery part for recovering heat from exhaust gas. The exhaust gas flowing through the rear flue 5 is cooled by heat exchange with steam or boiler feed water flowing through the heater 10 and economizer 12 . In addition, there is a steam drum 8 for storing boiler feed water passing through the economizer 12, and the steam drum 8 is also connected to the furnace wall pipe 6.

The economizer 12 transfers the heat of the exhaust gas to the boiler feed water to preheat the boiler feed water. The economizer 12 is connected to the pump 7 through a pipe 21 and connected to the steam drum 8 through a pipe 22 . The boiler feed water supplied from the pump 7 to the economizer 12 through the pipe 21 and preheated by the economizer 12 is supplied to the steam drum 8 through the pipe 22 .

The steam drum 8 is connected with a downcomer 8a and a furnace wall pipe 6 . The boiler feed water in the steam drum 8 descends from the downcomer 8 a and is guided to the furnace wall pipe 6 at the lower side of the furnace 2 to flow to the steam drum 8 . The boiler feed water in the furnace wall tube 6 is heated by the combustion heat generated in the furnace 2 and evaporated into steam in the steam drum 8 .

The steam drum 8 is connected with a saturated steam pipe 8b for discharging the steam inside. The saturated steam pipe 8b connects the steam drum 8 and the superheater 10 . The steam in the steam drum 8 is supplied to the superheater 10 through the saturated steam pipe 8b. The superheater 10 superheats steam using the heat of exhaust gas to generate superheated steam. The superheated steam is supplied to the turbine 100 outside the factory 1 through the pipe 10a and used for power generation.

The pressure and temperature of the steam discharged from the turbine 100 are lower than the pressure and temperature of the steam discharged from the superheater 10 . Although not particularly limited, the pressure of the steam supplied to the turbine 100 is about 10 to 17 MPa, and the temperature is about 530 to 570°C. The pressure of the steam discharged from the turbine 100 is about 3 to 5 MPa, and the temperature is about 350 to 400°C.

A condenser 102 is arranged downstream of the turbine 100 . The steam exhausted from the turbine 100 is supplied to the condenser 102, and is supplied to the pump 7 after being condensed in the condenser 102 to return saturated water. Connected to the turbine 100 is a generator that converts kinetic energy obtained by the rotation of the turbine 100 into electrical energy.

The pump 7a supplies make-up water to keep the water level of the condenser 102 constant. In FIG. 1 , the makeup water flow rate u1 (an example of "process data") replenished by the pump 7a is shown.

The process data processed in this embodiment can be any data related to the factory 1, for example, it can be the data of measuring the state of the factory 1 by a sensor (an example of "process data"), and more specifically, it can include the measured values of the temperature, pressure, flow rate, etc. of the factory 1. In FIG. 1, the boiler feed water flow rate u2 (an example of "process data") supplied from the pump 7 to the economizer 12 is shown. Furthermore, FIG. 1 shows the boiler outlet steam flow rate u3 (an example of "process data") supplied from the superheater 10 to the turbine 100, and the saturated steam flow rate u4 supplied from the steam drum 8 to the superheater 10 (an example of "process data"). In addition, the makeup water flow rate u1 can be controlled to follow the saturated steam flow rate u4. In addition, the boiler feed water flow rate u2 may be adjusted while monitoring both the boiler outlet steam flow rate u3 (or superheated steam flow rate) and the liquid level of the steam drum 8 .

When a hole occurs in the pipe system constituting the plant 1, the flow rate u1 of the makeup water increases or the flow difference between the flow rate u2 of the boiler feed water and the flow rate u3 of the boiler outlet steam increases. DCS (Distributed Control System: Distributed Control System, Figure 2) 20 receives factory 1 process data from factory 1 such as make-up water flow rate u1, boiler feed water flow rate u2, boiler outlet steam flow rate u3, and saturated steam flow rate u4, monitors the operation of factory 1, and monitors whether there is any abnormality in factory 1. As described below, the monitoring device 40 evaluates the process data based on the alarm determination logic set for each type of abnormality, and when it is determined that an abnormality has occurred, the display device 50 issues an alarm.

In addition, as process data, the makeup water flow rate u1, the boiler feed water flow rate u2, the boiler outlet steam flow rate u3, and the saturated steam flow rate u4 are exemplified, but the process data related to the factory 1 may be other data. The process data related to factory 1 may be calculated based on other data such as temperature and pressure or multiple process data, or may be uncalculated data obtained from sensors and the like.

Fig. 2 is a functional block diagram of the factory 1, the DCS 20 and the operation support system 30 of the present embodiment.

DCS20 is a distributed control system used to control factory 1. The DCS 20 acquires process data from sensors installed in the factory 1 , and supplies control signals for controlling the factory 1 to the factory 1 based on the process data.

The operation support system 30 has an edge/cloud computing unit 32 that acquires process data from the DCS 20 , a monitoring device 40 that acquires process data from the edge/cloud computing unit 32 and monitors the factory 1 based on the process data, and a display device 50 that displays the operation status of the factory 1 to the operator. The monitoring device 40 (an example of a "control device") also functions as a control device that controls the display device 50 . Specifically, the monitoring device 40 acquires the process data, judges the presence or absence of abnormality based on this, and makes the display device 50 issue an alarm (an example of "warning") when it is judged that an abnormality has occurred. When an alarm is issued, the monitoring device 40 acquires information displayed when an alarm is issued, such as guide information (described later), from a database described later, and displays it on the display screen of the display device 50 .

The edge/cloud computing unit 32 includes a plurality of edge servers dispersedly arranged at the periphery of the network, and a cloud data server that collects process data from the plurality of edge servers and provides them to the monitoring device 40 . By providing the edge/cloud computing unit 32, it is possible to preferably collect process data from a large-scale monitoring device or a plurality of dispersed monitoring devices. However, the operation support system 30 does not necessarily have to include the edge/cloud computing unit 32 . At this time, the operation support system 30 obtains the process data from the DCS 20 through the network.

The monitoring device 40 includes an alarm display control unit 42 and a storage unit 44 . The alarm display control part 42 has: a process data acquisition part 42A that obtains process data from the edge/cloud computing part 32; an alarm determination part 42B that determines whether an alarm needs to be issued according to the process data obtained by the process data acquisition part 42A; when the alarm determination part 42B determines that an alarm needs to be issued, when the alarm is issued, the alarm-related information including the guidance information used to guide the corresponding method when the alarm is issued is displayed on the display device 50; The standard guide setting part 42D of the standard guide information of the device 50 .

Furthermore, the alarm display control unit 42 may be configured to be able to add guidance information. Specifically, it includes: an effective word extraction unit 42E for extracting an effective word (an example of a “word”) from the operation log DB 44C; and a guidance addition setting unit 42F for displaying the validity of the extracted effective word and a part of the operation log including the effective word on the display device 50 as candidates for guidance information to be added, and accepting input of additional guidance information added to the standard guidance information.

The storage unit 44 of the monitoring device includes an alarm information DB44A, a guidance information DB44B, and an operation log DB44C. First, each database of the storage unit 44 will be described.

The alarm information DB 44A stores alarm judgment logic (judgment criteria) for judging whether or not an alarm indicating an abnormality in the factory 1 has occurred based on the process data, and history information of alarms issued in the past (including information such as identification information of the alarm and the date of occurrence of the alarm). Specifically, the alarm judgment logic is associated with alarm identification information, alarm classification information, and evaluation item names of process data related to the alarm and stored for each alarm. The alarm judgment logic can stipulate the judgment standard for judging whether the value of the process data exceeds the threshold value based on the process data obtained from a single sensor, or according to a predetermined algorithm (including a predetermined pre-training model generated by machine learning and a mathematical formula or mathematical model derived by multivariate analysis of the process data of a plurality of sensors, etc.).

The guidance information DB 44B stores guidance information for instructing a corresponding method when an alarm is issued. The guidance information includes standard guidance information preset by the standard guidance setting unit 42D and additional guidance information added by the guidance addition setting unit 42F.

For example, in the guide information DB 44B, an article explaining how to capture a phenomenon from a graph titled "1. Monitoring point (how to read graph)" and an article explaining a method for optimizing the state of process data titled "2. Corresponding method" are recorded for each alarm. In addition, the method for optimizing the state of the process data refers to, for example, a method for optimizing the state of the concerned process data exceeding the threshold value and setting it within the threshold value.

FIG. 3 shows an example of guidance information displayed on the display screen of the display device 50 when the issued alarm is "circulation system temperature difference 1". "1. Monitoring point (how to read the graph)" describes the definition and calculation formula of the temperature difference in the furnace. According to such an explanatory text, the operator can confirm how to capture the phenomenon from the graph, and easily understand what kind of phenomenon is occurring. "2. Corresponding method" lists the items that the operator should confirm according to the size of the temperature difference in the furnace. Based on such descriptions, a method for optimizing the state of the process data can be confirmed. In addition, the guidance information may include not only text information, numerical formulas, etc., but also images, diagrams, and the like. Furthermore, a function of displaying the time when the same alarm was issued in the past may also be provided.

The operation log DB 44C stores information related to the actual operation status of the factory 1 . For example, the information related to the actual operation status of the factory 1 includes an operation log recorded by the operator in order to hand over the result of observing the operation status of the equipment in charge of the factory 1 to the next operator. Operation logs are created for each boiler, turbine, etc., or for the entire plant. Also, the operation log is preferably created periodically (for example, at least once a day). Information related to the actual operation of the factory 1 may include monthly operation reports, maintenance and management information of responsible equipment, inspection records, maintenance information, and failure history.

Next, each functional block of the alarm display control unit 42 will be described. The process data acquisition unit 42A acquires the process data from the edge/cloud computing unit 32 .

The alarm determination unit 42B determines whether or not an abnormality has occurred in the factory 1 based on the process data, and when it is determined that an abnormality has occurred, causes the display device 50 to issue an alarm. Specifically, the alarm determination unit 42B reads the alarm determination logic (judgment criteria) recorded in the alarm information DB 44A, and evaluates the process data according to the alarm determination logic. For example, the alarm determination unit 42B evaluates predetermined process data based on the alarm determination logic, and determines whether there is an abnormality that may occur in the factory 1 called burst (such as a boiler tube leak, a state in which metal materials such as boiler tubes and pipes are damaged and broken, and internal steam leaks to the outside. This includes a state where there is a high possibility of a burst in the future. The same applies hereinafter). When it is determined that a burst has occurred, the display device 50 issues an alarm. At the same time, the alarm judging unit 42B records the occurrence of abnormality in the alarm information DB 44A.

When it is determined by the alarm determination unit 42B that an alarm needs to be issued, the alarm information display unit 42C displays on the display device 50 information for the operator to check whether or not the alarm is appropriate. Information on past and current alarms acquired from the alarm determination unit 42B is displayed on the display screen of the display device 50 in the form of a list. Also, when the operator double-clicks (selects) a predetermined alarm, the alarm information display unit 42C acquires guidance information corresponding to the selected alarm and displays it on the display screen.

The standard guidance setting unit 42D sets preset guidance information, that is, standard guidance information, in guidance information corresponding to alarm processing measures (including information such as process data to be confirmed by the operator in order to determine whether the alarm is appropriate when the alarm is issued). Usually, the standard guidance information is set (or information that can be set before the plant operation) by skilled operators according to their own knowledge and experience and has high versatility.

The valid character extracting unit 42E extracts valid characters (an example of "word") from the operation log DB 44C in order to assist the operator in setting additional guidance information. The effective word extraction unit 42E shown in this embodiment extracts a plurality of words from operation logs etc. and calculates their validity by using a known natural language processing method, thereby extracting effective words. FIG. 4 is a functional block diagram of the effective word extracting unit 42E. As shown in FIG. 4 , the effective word extraction unit 42E includes: an information extraction unit 42E1 for extracting words that can be effective words from the operation log; a feature quantity calculation unit 42E2 for calculating the statistical information of each word extracted by the information extraction unit 42E1; and an effectiveness calculation unit 42E3 for calculating the validity of each word based on the statistical information of each word.

The information extraction unit 42E1 performs morpheme analysis for dividing natural language such as operation logs and other information into morphemes and determining parts of speech as words, unnecessary part-of-speech filtering for removing auxiliary words, other parts of speech, and unnecessary words that cannot become valid words from morphemes, and unnecessary word filtering.

The feature amount calculation unit 42E2 calculates statistical information such as the number of occurrences of words extracted by the information extraction unit 42E1. Specifically, the appearance frequency (an example of "feature value"), n-gram co-occurrence frequency (an example of "feature value"), and frequency distribution (an example of "feature value") of each word are calculated. In addition, the n-gram co-occurrence frequency refers to the co-occurrence frequency of N adjacent words.

The validity calculation unit 42E3 calculates information showing the validity of each word based on the statistical information of each word calculated by the feature quantity calculation unit 42E2. For example, the validity calculation unit 42E3 calculates information showing validity based on at least one of TF (Term Frequency), IDF (Inverse Document Frequency), TF-IDF, or link frequency.

Here, TF (an example of "effectiveness") is a value calculated by dividing the number of occurrences of a predetermined word contained in one document _j (or article _j ) by the total number of words contained in the document _j (or article _j ). IDF (an example of "validity") is a value calculated as a logarithmic value of a value obtained by dividing the total number of documents (or the total number of articles) by the number of documents (or the number of articles) in which a predetermined word appears. TF represents the frequency of occurrence of a predetermined word for each document (or each article). IDF shows low values for words used interchangeably across multiple documents (or articles). TF-IDF is a value obtained by multiplying TF by IDF. Thus, TF-IDF (an example of "effectiveness") is an indicator that shows high values for words that appear prominently in only a part of documents (or articles) but not for words that are commonly used interactively. For example, the validity calculation unit 42E3 extracts a word having a high value of TF-IDF as a valid word, and displays it on the display device 50 together with the value of TF-IDF (an example of "validity"). Equation 1 shows an example of expressions for calculating TF(tf _i,j ), IDF(idf _i ), and TF-IDF(tfidf). [Formula 1]

The validity calculating part 42E3 may calculate the information which shows the validity of each word from connection frequency (an example of "validity"). For example, the connection frequency can be calculated based on the FLR method of counting the frequency of using a word in combination with another word, and a word with a high value can be extracted as an effective word. Since words with high validity (for example, "circulation particle") are often used in combination with other words with high validity (for example, "temperature at the lower part of the lower furnace"), it is also possible to extract words with high validity by using the connection frequency. FIG. 4 shows an example of an effective word list L1 as an example of the effective word extracted by the effective word extracting unit 42E and its validity (score).

The guidance addition setting unit 42F sets additional guidance information to be added to the standard guidance information. Usually, the additional guidance information is guidance information based on information obtained by an operator observing the factory after the operation of the factory starts. Since it is information obtained by actually operating the factory, the additional guide information is equivalent to information reflecting the situation unique to the factory.

Therefore, the standard guidance information corresponds to guidance information that is highly likely to be applicable to factories other than the factory 1, and the additional guidance information is guidance information that may not be applicable to factories other than the factory 1.

The guidance addition setting unit 42F causes the display screen of the display device 50 to display a free entry frame FL (an example of an "area for adding guidance information") for receiving additional guidance information. The guide addition setting part 42F accepts the information input by the operator in the free input box as additional guide information, and records it in the guide information DB 44B.

In order to further assist the operator in inputting additional guidance information, the guidance addition setting unit 42F of this embodiment displays standard guidance information and a list L1 of valid words and their validity in different areas of the display screen of the display device 50 ( FIG. 4 ).

Also, when an effective word is selected by the operator, the guidance addition setting unit 42F accesses the operation log DB 44C, reads a part of the operation log including the selected effective word, and displays it on a different area of the display screen of the display device 50 .

Therefore, the configuration is as follows: when the operator inputs additional guidance information, the guidance addition setting unit 42F can simultaneously display the standard guidance information ( FIG. 3 ) equivalent to the guidance information before addition, the list L1 ( FIG. 4 ) displaying valid words and their validity, the excerpt portion of the operation log including the selected valid words, and the free entry frame.

It is preferable to configure it so that the standard guide information ( FIG. 3 ) and the free entry box can be displayed side by side (that is, parallel to the same position in the vertical direction or the horizontal direction of the display screen). For example, the standard guide information may be displayed in the left area of the display screen (an example of the "first area"), and the free entry frame may be displayed in the right area of the display screen (an example of the "second area"). By displaying it in this way, it is possible to input, as additional guidance information, content that does not conflict with the standard guidance information while confirming the standard guidance information.

Also, when a different effective word in the list L1 is selected by the operator, the guidance addition setting unit 42F accesses the operation log DB 44C, reads a part of the operation log including the newly selected effective word, and displays it on a different area of the display screen of the display device 50. By displaying in this way, it is possible to input additional guidance information while referring to an operation log related to a plurality of effective characters.

FIG. 5 shows an example of the display screen of the display device 50 where the operator selects the effective word "circulation particle" and a list L2 of excerpts such as operation logs including "circulation particle" and a free entry box FL (guidance entry column) are arranged side by side. As shown in FIG. 5 , the guidance addition setting unit 42F may highlight the selected valid word.

As shown in FIG. 5 , the guide addition setting unit 42F can create the list L2 by extracting articles including valid words from an operation log or the like for a plurality of dates. With regard to plural dates, articles containing valid words are extracted, whereby related articles can be found efficiently.

Also, the guide addition setting unit 42F may create the list L2 by displaying articles contributing to effectiveness (for example, articles with a large TF) at the top.

Furthermore, the guide addition setting unit 42F may create the list L2 by accessing the alarm information DB 44A and displaying articles created on (or before and after) the alarm occurrence date corresponding to the additional guide information in the upper position. The display device of this aspect displays an area for adding guidance information to be displayed when a warning related to the operation of the factory occurs on the display screen, and simultaneously displays information related to the operation of the factory in the past when a warning of the same type (or the same type) as the warning occurred.

FIG. 6 is a diagram showing the physical configuration of the operation support system 30 for realizing the present embodiment. However, the edge/cloud computing unit 32 can adopt a known physical structure, so the description is omitted, and the physical structure of the operation support system 30 other than the edge/cloud computing unit 32 will be described below.

The operation support system 30 has a CPU (Central Processing Unit: Central Processing Unit) 30A equivalent to a calculation unit, a RAM (Random Access Memory: Random Access Memory) 30B and a ROM (Read only Memory) 30C equivalent to a storage unit, a communication unit 30D, an input unit 30E, and a display unit 30F. These various structures are connected in a manner capable of sending/receiving data to each other through a bus. In addition, in this example, the case where the operation support system 30 was comprised by one computer was demonstrated, but the operation support system 30 may be comprised by several computers. For example, the display unit 30F may be composed of a plurality of displays. In addition, the structure shown in FIG. 6 is only an example, and it is not necessary to have some of these structures. Furthermore, part of the structure may be located in a remote location. For example, a part of ROM 30C may be installed in a remote area, and it may communicate via a communication network.

CPU30A is a calculation part which performs the control process and calculation process included in this invention by executing the computer program etc. which are recorded in ROM30C etc. CPU30A has a processor. CPU30A receives various information (including process data) from RAM30B, ROM30C, communication part 30D, input part 30E, etc., and displays calculation processing results etc. on display part 30F or stores them in RAM30B or ROM30C.

The RAM 30B functions as a cache memory in the memory unit, and can be constituted by, for example, volatile semiconductor memory elements such as SRAM and DRAM.

The ROM 30C functions as a main memory in the memory unit, and can be composed of, for example, a non-volatile semiconductor memory element such as a flash memory capable of electrically erasing information or an HDD capable of magnetically erasing information. For example, the ROM 30C can store computer programs and data for executing processing including each control and each calculation processing shown in the present invention.

The communication unit 30D is an interface for connecting the operation support system 30 with other devices such as the DCS 20 . The communication unit 30D can be connected to a communication network such as the Internet.

The input unit 30E accepts input of data from an operator (including selection of effective characters in the present invention and input of additional guidance information), and may include, for example, a mouse, a keyboard, and a touch panel.

The display part 30F visually displays the calculation result based on CPU30A, for example, consists of LCD (Liquid Crystal Display: liquid crystal display).

In the above-mentioned physical structure, each function of the alarm display control unit 42 constituting the monitoring device 40 can be realized by mainly executing the computer program by the CPU 30A, each database (DB) constituting the memory unit 44 can be realized mainly by the ROM 30C, and the display device 50 can be realized mainly by the display unit 30F.

[Display method] Hereinafter, a series of operation support methods including a display method for creating guidance information displayed when an operator is alerted by the operation support system 30 will be described. Fig. 7 is a flowchart including such a display method.

First, create a standard lead message. According to the standard guidance setting part 42D of the operation support system 30, a skilled operator inputs the standard guidance information summarizing its handling measures (including information such as process data to be confirmed by the operator in order to determine whether the alarm is suitable for the alarm) for each alarm. Usually, the standard guidance information is highly versatile guidance information created in advance before the operation of the factory 1, and may include information that can also be used in other factories of the same kind. The input standard guidance information is registered in the guidance information DB44B.

After that, Plant 1 starts running. The operator records the operation log every day according to the actual operation situation of the factory 1. Operation logs are stored and accumulated in operation log DB 44C. In addition, the alarm determination unit 42B evaluates predetermined recipe data based on the alarm determination logic, and determines whether or not an abnormality has occurred. When it is determined that an abnormality has occurred, the monitoring device 40 causes the display device 50 to issue an alarm and display guidance information. The guide information displayed at this time is equivalent to the preset standard guide information. The operator handles the alarm according to the standard guidance information.

After a sufficient time has elapsed, the operator starts setting additional guidance information for the predetermined alarm. First, the effective word extracting unit 42E accesses the operation log DB 44C, and obtains information related to actual operation conditions such as the operation log (step S71).

Next, the effective word extracting unit 42E extracts effective words based on the acquired information (step S72). On the display screen of the display device 50 , a list of effective words and validity, guidance information at the current time point, and a free input box FL are displayed. For example, the guide information and the free entry frame FL are displayed side by side in the horizontal direction of the display screen.

In addition, the effective word extracting unit 42E may be configured to extract different effective words according to the content of the alarm. For example, the validity calculation unit 42E3 may be configured to calculate the validity of a predetermined warning such that the validity of a predetermined word becomes higher. In addition, the information extracting unit 42E1 may be configured to filter out words having low correlation with the alarm based on the content of the alarm and exclude them from valid words.

The operator confirms the list of valid words and validity (step S73), and selects a valid word with reference to validity (score) (step S74). When an effective word is selected by the operator, the guidance addition setting unit 42F accesses the operation log DB 44C, reads a part of the operation log including the selected effective word, and displays it on a different area of the display screen of the display device 50 . In this case, by displaying a plurality of articles including valid words as candidates, it is possible to efficiently find information suitable for adding guide information.

The operator confirms the excerpts of the guidance information and the operation log (step S75), and determines whether there is information to be added to the guidance information (step S76).

When it is determined that there is information to be added to the guidance information (Yes), the operator inputs the additional guidance information to be added in the free entry box FL based on the excerpt of the operation log or the like (step S77 ). The guide addition setting part 42F accepts the information input by the operator in the free input box FL as additional guide information, and records it in the guide information DB 44B. Afterwards, when an alarm is issued, guidance information including additional guidance information is displayed on the display screen of the display device 50 .

Here, the additional guidance information may be information determined according to differences in machine specifications of factories. The equipment specifications of the factory vary according to the power generation scale of the factory, etc., and the standard guidance information sometimes only records the treatment measures for general boilers without considering such differences in equipment specifications. For example, a boiler which is one of the equipment of a factory has different control values for sulfur oxides (SOx) and nitrogen oxides (NOx) depending on the specifications. Therefore, some boilers have denitrification devices and desulfurization devices, while some boilers do not have denitrification devices and desulfurization devices. Also, the required temperature and pressure may vary depending on the boiler. The inventors of the present application focused on this point, and did not fix the guidance information, but considered creating guidance information that reflects factory-specific conditions such as differences in factory equipment specifications by making it possible to add guidance information.

Furthermore, focusing on information created and accumulated for different purposes such as operation logs, when configuring as additional guidance information, information related to the actual operation status of the factories is accessed and displayed at the same time. Therefore, the burden of creating guidance information is reduced, and even an inexperienced operator can easily add new guidance information taking into account the unique situation of the factory.

In addition, since the structure not only simply displays information related to the actual operation status of the factory, but also narrows the range of highly effective information for guidance creators such as operators to read, the burden of creating guidance information can be further reduced.

In addition, the present invention can be modified in various ways unless it deviates from the gist. For example, the method of machine learning can be used for the extraction of effective characters and the calculation of validity. At this time, it is also possible to create a teacher profile that is actually added to the additional guidance information as a bonus. Also, the identification information of the operator who created the operation log can be used as a factor. Machine learning models include models using neural networks such as convolutional neural networks (CNN), models using regression models such as Gaussian process regression, and models using tree algorithms such as decision trees. The edge/cloud computing unit 32 can also be used when collecting information for machine learning. In addition, it is possible to add a part of constituent elements of one embodiment to another embodiment within the scope of general creativity of those skilled in the art. Moreover, some constituent elements of one embodiment can be interchanged with corresponding constituent elements of another embodiment.

1: Factory 2a: Fuel supply port 2b: Gas outlet 2c: air supply pipe 2d: outlet 3: Cyclone 3a: Exhaust gas flow path 4: Recycling material recovery tube 4a: ring sealing part 5: Rear flue 6: Furnace wall tube 7: pump 30:Operation support system 30D: Department of Communications 30E: input part 30F: display part 32: Cloud Computing Department 40: Surveillance device 42:Alarm display control unit 42A: Process data acquisition department 42B: Alarm Judgment Unit 42C: Alarm information display unit 42D: Standard Guidance Setting Department 42E: effective word extraction part 42F: Guidance additional setting department 44: memory department 50: display device 100: Turbine 102: condenser

[Fig. 1] is a schematic diagram showing the overall structure of the factory. [Fig. 2] It is a functional block diagram of the factory, DCS and operation support system. [Fig. 3] is an example of guidance information displayed on the display screen of the device. [ Fig. 4 ] is a functional block diagram of an effective word extracting unit. [FIG. 5] It is an example of displaying the excerpt list of an operation log etc. side-by-side with a free entry box. [ FIG. 6 ] is a diagram showing the physical configuration of the operation support system 30 . [FIG. 7] It is a flowchart of the operation support method including the display method of this embodiment.

1: Factory

2: Furnace

2a: Fuel supply port

2b: Gas outlet

2c: air supply pipe

2d: outlet

3: Cyclone

3a: Exhaust gas flow path

4: Recycling material recovery tube

4a: ring sealing part

5: Rear flue

6: Furnace wall tube

7,7a: pump

8: Steam drum

8a: downpipe

8b:Steam pipe

10: superheater

10a,21,22: pipe

12: Energy saver

20:DCS

100: Turbine

102: condenser

u1: make-up water flow

u2: boiler feed water flow

u3: boiler outlet steam flow

u4: saturated steam flow

Claims (7)

A display device having a display screen. The display device is configured to display pre-registered guidance information on the display screen when a warning related to the operation of a factory occurs, and simultaneously display an area for adding guidance information to be displayed on the display screen, and is configured to display the guidance information in a first area of the display screen and display the area for adding the guidance information in a second area parallel to the first area of the display screen. The information in the second area is used as additional guidance information and the additional guidance information is displayed on the aforementioned display screen. The display device according to claim 1, which is configured to display at least one word included in the information describing the past operation status of the factory, and display the information including the selected word on the display screen. The display device according to claim 2, wherein the word is extracted by performing the following steps: a step of calculating the feature value of at least one word based on the information recording the past operation of the plant; and a step of calculating the validity of at least one word based on the feature value of the word, and displaying the word together with the validity of the word on the display display screen. A display method comprising: displaying pre-registered guidance information on a display screen when a warning related to factory operation occurs, and displaying an area for adding guidance information to be displayed on the display screen of a display device; displaying the guidance information in a first area of the display screen; and displaying the area for adding the guidance information in a second area parallel to the first area of the display screen. The information of the area is used as additional guidance information and the additional guidance information is displayed on the aforementioned display screen. A control device, which controls a display device having a display screen, wherein the control device is configured to display pre-registered guidance information on the display screen when a warning related to the operation of a factory occurs, and simultaneously display an area for adding guidance information to be displayed on the display screen, and is configured to display the guidance information in a first area of the display screen, and display the area for adding the guidance information in a second area parallel to the first area of the display screen. Accept the information input to the aforementioned second area as additional guidance information and display the additional guidance information on the aforementioned display display screen. A computer program that causes a computer that controls a display device having a display screen to execute the steps of: displaying pre-registered guidance information on the display screen when a warning related to the operation of a factory occurs, and simultaneously displaying an area for adding guidance information to be displayed on the display screen; displaying the guidance information in a first area of the display screen; and displaying the area for adding the guidance information in a second area parallel to the first area of the display screen; The setting unit accepts the information input into the second area as additional guidance information and displays the additional guidance information on the display screen. A factory is equipped with the control device described in Claim 5.

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