JPH04281594A - Plant abnormality detector - Google Patents

Abstract

PURPOSE:To easily recognize the occurrence of abnormality, an abnormality occurring place, and the content and degree of abnormality by a watch man when the abnormality occurs by always monitoring the constituent of a plant. CONSTITUTION:The presence/absence of the abnormality is decided by analyzing an image and acoustic data detected by each of an acoustic sensor group 11 and an image sensor 12 arranged at every part of the plant by an abnormality decision device 13, and a result decided by the abnormality decision device 13 is inputted to a display controller 15, and also, information conforming it to a data processing content is read out from a display information memory device 14, and a decision result is displayed when no abnormality exists, and when the abnormality exists, rough image analysis content and acoustic analysis content are displayed, and furthermore, the detail analysis content of data is displayed on a display device 16 based on a request from an input device 17.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant abnormality detection device used for monitoring abnormalities in plant components.

0002

[Prior Art] As a means of maintaining each part of a plant,
Patrols by plant personnel are widespread. This system constantly monitors plant components using the five senses of sight and hearing of plant personnel, and aims to detect abnormalities early and prevent the spread of abnormalities through early detection.

[0003] However, since humans are involved in all such plant inspection work, mistakes such as oversights are inevitable. Furthermore, in large-scale plants, patrols must be carried out over a vast area, placing a burden on plant personnel. Therefore, recently, devices are being introduced that process signals from images and acoustic sensors such as cameras and microphones using computers, and mechanically detect abnormalities.

FIG. 4 shows an example of the configuration of such a plant abnormality detection device. In FIG. 4, images and acoustic data of each part of the plant are collected by an acoustic sensor group 1 and an image sensor group 2 arranged at various parts of the plant, and are taken into an abnormality determination device 3. The abnormality determination device 3 analyzes these data, uses the analysis results to determine the presence or absence of an abnormality, and displays the determination results on the display device 4. The display device 4 displays all sensor names of the acoustic sensor group 1 and the image sensor group 2 and the determination results of the abnormality determination device 3, and displays an alarm message on the same screen when an abnormality is recognized. These devices centralize plant abnormality monitoring, allowing plant personnel to monitor only a single screen, thereby reducing errors and reducing the burden on plant personnel.

[0005]

[Problems to be Solved by the Invention] As described above, conventional plant abnormality monitoring devices process signals from a plurality of sensors, and among the results, the most important and urgent information is the abnormality determination result and By displaying the sensor names necessary to identify the location of an abnormality on a single screen, we are centralizing plant abnormality monitoring. However, even if an abnormality is detected, recovery often requires work that reduces the operational efficiency of the process, including shutting down the plant. Normally, recovery work for an abnormality involves reducing the operational efficiency of the process and reducing the extent of the abnormality. By comparing and considering, we decide whether to implement it or not. Therefore, depending on the situation of the abnormality, the recovery work may not be carried out, and in this case, it is necessary to continuously monitor the progress of the abnormality. Furthermore, even if it is decided to carry out recovery work due to the abnormal situation, it will still take a considerable amount of time to carry out the work, so it is still necessary to understand the abnormal situation.

[0006] However, in order to grasp the abnormality situation, it is necessary to display detailed information such as the data analysis process and the abnormality determination process, and in order to meet such demands, it is conceivable to display more information. As a result, the display becomes complicated and has low visibility, making it difficult to quickly confirm whether an abnormality has occurred, which is highly urgent information.

[0007] Furthermore, as plant processes become larger, such as in thermal power plants, for example, the monitoring range becomes wider and more sensor groups are arranged, making it difficult to display all monitoring information on a single screen. It becomes impossible. For this reason, one possible method is to have a plurality of screens on which the number of sensor displays is limited, and to have an operator switch between these screens through an input device, thereby preventing a decrease in visibility due to an increase in the amount of displayed information. However, as the monitoring range expands, the number of display screens also increases, making operations more complex, making it difficult to immediately know whether an abnormality has occurred. Further, there is no means for recognizing the location of an abnormality in the entire plant, and the operator must always be aware of the correspondence between numerous displays and plant processes and locations.

[0008] Due to the demand for detailed information display and the increase in the scale of plants, it becomes necessary to display a large amount of data. However, the purpose of rapidly detecting an abnormality tends to be contradictory, and it is difficult to create a device that satisfies all of the purposes required for monitoring work.

[0009] An object of the present invention is to provide plant abnormality monitoring that constantly monitors the components of a plant and, when an abnormality occurs, allows a supervisor to easily grasp the occurrence of the abnormality, the location of the abnormality, and its contents and extent. We are here to provide you with the equipment.

0010

[Means for Solving the Problems] The present invention detects the status of each part of a plant using a group of image sensors and a group of acoustic sensors,
A plant abnormality detection device that detects abnormalities in plant components by processing the data output from these sensor groups captures the image and acoustic data detected by the sensor groups, analyzes these data, and An abnormality determining means for determining the presence or absence of an abnormality, a display means for displaying information determined by the abnormality determining means, and a display information storage means for storing information that associates the results determined by the abnormality determining means with data processing contents. When the result determined by the abnormality determination means is input, information corresponding to the determination result is read from the display information storage means, and the determination result is displayed when normal, and the general image analysis content and sound are displayed when abnormal. The apparatus further includes a display control means for displaying analysis contents and further displaying detailed data analysis contents on the display means in response to a request from the input means.

[0011]

[Operation] In a plant abnormality monitoring device with such a configuration, the judgment result is displayed when normal, and when an abnormality occurs, the abnormality judgment result and the outline of image analysis contents and acoustic analysis contents are displayed. After that, detailed data analysis contents can be displayed upon request from the input means. In other words, by placing higher-priority information necessary for monitoring work in a hierarchy, and by associating and managing a large amount of information from general information to detailed information, automatic monitoring can be performed according to abnormality determination results. The requested information can be displayed.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a plant abnormality monitoring device. In FIG. 1, 11 is a group of acoustic sensors such as microphones installed in each part of the plant, 12 is a group of image sensors such as cameras, and the information collected by these acoustic sensor group 11 and image sensor group 12 is sent to an abnormality determination device 13. be taken into account. This abnormality determination device 13 analyzes input information and determines the presence or absence of an abnormality. Also, 14
is a display information storage device, and this display information storage device 14 contains sensor placement information indicating the placement of image and acoustic sensors throughout the plant, and information that associates the results determined by the abnormality determination device 13 with data processing contents, such as normal. The time item list and the abnormal time display item list are stored as relational information hierarchically arranged according to importance. Reference numeral 15 denotes a display control device into which the results determined by the abnormality determination device 13 are input, and this display control device 15 selects determination information according to the display information stored in the display information storage device 14 and displays it on the display device 16. It is something to do. Furthermore, 17 is an input device for transmitting a request from an operator to the display control device 15, and this input device 17 selects a display screen according to the display information.

Next, the operation of the plant abnormality detection system constructed as described above will be explained with reference to FIGS. 2 and 3. FIG. 2 shows the hierarchical relationship of display screens in this embodiment, and FIG. 3 shows an example of screen-related information held by the display information storage device.

As is well known, in plant monitoring work,
The most important and priority objective is to detect anomalies quickly. In order to achieve this purpose, the normal display screen 18 displayed during normal operation is based on the names of a plurality of detection sensors and the abnormality detected by the abnormality determination device 13 according to the normal display item list 21 held in the display information storage device 14. Displays the presence or absence of. This screen provides only the highest priority information to allow for the widest possible range of monitoring tasks and to reduce the number of screens to be monitored.

The next important task is to understand the situation of an abnormality when an abnormality is detected by analyzing information from a certain detection sensor. Therefore, when the abnormality determination device 13 determines that an abnormality has been detected, for example, in sensor A in the normal item list 21, the display control device 15 selects the abnormality display item list 22 held by the display information storage device 14. is used to select the data analysis process, data analysis results, etc. necessary for understanding the abnormal situation, and automatically output them to the display device 16 as the abnormality display screen 19. If you want to display more detailed information, for example, the detailed information of A1 in the abnormality display item list, by giving an instruction from the input device 17, the display control device 15 selects the display information using the detailed information list 24, and then It is output to the display device 16 as a detailed information screen 20.

The above embodiment is a description of a plant abnormality detection device having a screen hierarchy relationship, and the display information storage device 14 stores sensor placement information, that is, the abnormality display items 22 and 23 in FIG. 3 contain sensor placement information. By writing the following, it is possible to display the following.

During normal operation when no abnormality is detected, the display device 16 displays an overall monitoring diagram showing the approximate positions of the plurality of detection sensors in the plant and the results of the abnormality determination device 13 in accordance with the commands from the display control device 15. Displayed on screen 18. When the abnormality determination device 13 determines that an abnormality has been detected, the display control device 15 uses the sensor placement information possessed by the display information storage device 14 to create a sensor placement diagram that shows at least the location of each image and acoustic sensor in the plant; Monitoring information that allows at least an overview of the abnormal situation to be grasped is automatically displayed as an abnormality display screen. Furthermore, by making a request from the input device 17, the display control device 15 uses the detailed information list 24 of the display information storage device 14 to display more detailed abnormality detection information as the detailed information screen 20 on the display device 16. . Furthermore, in the above embodiment,
By providing the display control device 15 with an interruptible screen control function, the following display can be performed.

In this embodiment, as described above, the abnormality determination device 1
3, when an abnormality is detected, the display is automatically switched. That is, during normal times when no abnormality is detected, the display device 16 displays the normal state display screen 18 as in the above embodiment, and when the abnormality determination device 13 determines that an abnormality is detected, the display control device 15 changes the display to the abnormal state display screen. The screen is automatically switched to screen 19.

[0020] Even if no abnormality is detected, for example, to understand changes over time in a plant component to be monitored, or to monitor the progress of an abnormality in a plant component for which recovery work has not been performed, etc. When the operator determines that it is necessary to display the data analysis content or the signal of the detection sensor, by making a request from the input device 17, the display control device 15 displays the normal display screen 1 regardless of the presence or absence of an abnormality.
8 to a detailed information screen 20.

As described above, according to the above-mentioned embodiment, it is possible to systematically monitor the huge amount of plant monitoring information due to the increase in the scale of processes, starting from items with high priority, and to quickly detect abnormalities. It becomes possible to easily identify the situation and location of the occurrence.

The display screens and display items hierarchically linked in the above description and in FIGS. 2 and 3 can be configured in a larger number and can be selected based on the content of the abnormality or input by the operator. Further, in the above embodiment, the screen is divided into three layers, but it is of course possible to have a structure with more layers.

[0023]

[Effects of the Invention] As described above, according to the present invention, monitoring work of a large-scale plant containing a huge amount of monitoring information can be quickly performed by providing information according to priority, and anomalies can be detected. By automatically providing the necessary information, this can be done easily and accurately.
It is possible to provide a plant abnormality monitoring device that can satisfy all of the objectives of monitoring work: rapid detection of an abnormality, identification of its occurrence location, and grasp of its situation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a plant abnormality detection device according to the present invention.

FIG. 2 is an explanatory diagram of the hierarchical relationship of display screens in the same embodiment.

FIG. 3 is an explanatory diagram of the hierarchical relationship of screen display information in the same embodiment.

FIG. 4 is a block configuration diagram showing a conventional plant abnormality detection device.

[Explanation of symbols]

11...Acoustic sensor group, 12...Image sensor group, 13...
...Abnormality determination device, 14...Display information storage device, 15...
Display control device, 16...display device, 17...input device.

Claims (1)

[Claims] 1. A plant abnormality detection device that detects the state of each part of a plant using an image sensor group and an acoustic sensor group, and detects abnormalities in plant components by processing data output from these sensor groups, an abnormality determination means that captures image and sound data detected by the sensor group and analyzes these data to determine the presence or absence of an abnormality; a display means that displays information determined by the abnormality determination means; and the abnormality determination means. display information storage means storing information that associates the results determined by the means with data processing contents; and when the results determined by the abnormality determination means are input, the display information storage means stores information corresponding to the determination results. display control that causes the display means to display the determination result when normal, to display the summary image analysis contents and the acoustic analysis contents when abnormal, and further to display detailed data analysis contents on the display means in response to a request from the input means. A plant abnormality detection device characterized by comprising means.