JPS6045899A - State monitor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a condition monitoring device for monitoring the condition of mechanical equipment such as a plant.

[Technical background of the invention and its problems]

When operating mechanical equipment in a plant, such as a nuclear power plant, it is essential to monitor for failures, heat transfer, leaks, damage, etc. to maintain the safety and stability of the equipment.-HR In this way, A-monitoring was carried out either constantly or at regular intervals by patrolling by operators or measurements using various measuring instruments.

However, it is not easy for operators to approach and monitor equipment during plant operation, and there are limits to the scope and content of monitoring. On the other hand, when monitoring with various measuring instruments, there is a risk that monitoring may become impossible due to a failure of the HI' side device, and measuring instruments have different measuring targets or measurement ranges depending on the purpose of the measuring instrument. It is impossible to measure the measurement target or measurement range, and even if an abnormality is detected, an operator has to approach and confirm the situation. The purpose is to prevent all abnormalities, such as cases where it is impossible for operators to constantly monitor, cases where operators cannot easily approach, cases where monitoring cannot be completed with measuring instruments, etc. To provide a condition monitoring device capable of continuously monitoring equipment, issuing an appropriate alarm when an abnormality occurs in the equipment, and displaying an image of the status of the equipment at that time.

[Summary of the invention]

In other words, the condition monitoring device according to the present invention includes an imaging device that captures the status of equipment as an image, and a signal from this imaging device is input and the current image signal is compared with the image signal of AiJ for a certain period of time to monitor the equipment. This configuration includes an arithmetic processing unit that monitors changes in the state, and an official gazette display device that issues an alarm based on an abnormality signal from the arithmetic processing unit and displays the state as an image.

The current image signal is input as a signal and the presence or absence of an abnormality is detected by comparing the current image signal and the image signal before a certain period of time. It is possible to reliably monitor the condition of the equipment even in cases where the system is not fully operational. In addition, if an abnormality occurs, it is possible to issue an alarm and display an image via the official gazette display device, making it easy to recognize where and what type of abnormality has occurred, and to take immediate action. The safety and stability of the plant can be significantly improved.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. The figure is a diagram showing a schematic configuration of a condition monitoring device according to this embodiment.

The reference numeral in the figure indicates an imaging device, and the imaging device has an industrial configuration for capturing an image of a monitoring object 2 such as machinery and equipment, and its surroundings 3. The above calculator 6 uses the industrial television camera 4 and the signal converter 5? 1iiJ control function. In addition, the calculator 6 has a number of 6 digits, which is sufficient to record the number 1 whitened image data from the signal converter 5 once each time.
I have notes IJ 7A and 7B with minutes. The memories 7A and 7B each have the same capacity,
The address on the memory is bcm to ]7·r]. And memories 7A and 7B are 1 = = j (total K 4)
It is connected to the arithmetic unit 8 provided at the end 6. The above-mentioned calculator 6 is equipped with an alarm display device 9.
This police @ clothing display device 9 is the setting 4IIf from the calculator 5λv6
f An alarm is issued by the abnormal signal, and the images on the memories 7A, 7B at that time are displayed on the monitor 10.
It has a function to display on the monitor B.

The operation will be explained based on the above configuration. First, the industrial television camera 4 captures an image of the monitored object 2 and its surroundings 3, and outputs it to the signal converter 5 as an image signal. The signal converter 5 converts the input image 7. It is determined whether it is brighter or darker than a preset threshold value based on the brightness of each mesh divided by VC division, and if it is 9 brighter than the threshold value, "1" is output to the calculator 6 for each mesh, and If it is darker than the threshold, "0" is similarly output to the computer 6. The computer 6 sequentially records the input signals in the memory 7A for each message. The image data recorded on this memo IJ7A is automatically recorded on the memory 7B.

Thereafter, such operations will be performed continuously. Therefore, on the memo 1J7A and the memo IJ713, image data of the monitoring target 2 and its surroundings 3 that are temporally consecutive are recorded. Since the memories 7A, 7B and the industrial TV camera 4 have a one-to-one correspondence,
The computation unit 8 compares the corresponding image data recorded in the memo IJ 7A and the memory 7B. If there is no change in the status of the monitored object 2 and its surroundings 3, the temporally sequential image data recorded in the memory 7A- and the memo 1J7B match, and as a result, the monitored object 2 and its surroundings 3 match. It can be seen that no abnormality has occurred in the condition. If the image data recorded in the memory 7A and the memory 7B do not match, it can be determined that an abnormality has occurred in the state of the monitored object 2 and its surroundings 3. At this time, the computer 6 The occurrence of an abnormality is confirmed and an abnormality occurrence signal is output to the congratulation display device 9. The alarm display device 9 inputs this abnormality signal and issues a general alarm, and at the same time transfers the image data in the memories 7A and 7B onto the monitors 10A and 10B to display a jiji image.

In other words, the industrial television camera 4 captures the monitored object 2 and its surroundings 3 as an image, and records this as a memo.
, 7 B continuously records data one after the other in time, and compares the data with the calculation unit 8 to monitor the presence or absence of an abnormality, so if the operator cannot approach, It is possible to reliably detect the presence or absence of an abnormality even when an operator cannot continuously monitor it or when a measuring instrument cannot fully detect it. If an abnormality occurs, an alarm is issued on the alternate report display device fi9, and images can be displayed on the monitor IOA and JOB, so the monitor IOA.

By comparing the images on the 10B, it is possible to accurately determine what kind of abnormality has occurred in measurement, and the safety and stability of the equipment can be significantly improved.

〔Effect of the invention〕

As detailed above, the condition monitoring device according to the present invention inputs the signals from the image pickup device that captures the condition of the equipment as an image, and compares the current image signal with the image signal a certain time ago. The system is equipped with a processing unit ji′, f that monitors changes in the status of the equipment, and a roofing information display device that issues an @′p alert based on an abnormality signal from the processing unit and displays the status as an image. be. Therefore, since the current image signal and the image signal from a certain time ago are compared to detect the presence of abnormal explosions, if the operator is unable to constantly monitor the situation, or if the weapon cannot be fully measured at each t, l If tll. Even in cases where there is no
It is possible to monitor the status of if:. In addition, if an abnormality occurs, a warning can be issued via the alarm display device and an image can be displayed, making it easy to recognize what type of abnormality has occurred and take immediate action. The integrity and stability of the plant can be significantly improved.

[Brief explanation of the drawing]

Claims (2)

[Claims] (1) Use an imaging device to capture the status of equipment, l+, and F as an image. Input the signal from this imaging device and compare the current image signal with the image signal from a certain time ago to detect changes in the equipment status. 1. A condition monitoring device comprising: an arithmetic processing device for monitoring; and a bulletin display device that issues an alarm in response to an abnormality signal from the arithmetic processing device and displays the status as an image. (2) The arithmetic processing unit compares a pair of memories that continuously record temporally consecutive image data and the image data recorded in this pair of memories, and determines that the image data is different. The condition monitoring device according to item 1 of item 81, characterized in that it is equipped with a calculation unit that determines when an abnormality occurs.