JPH07298438A - Power facility monitor - Google Patents

Abstract

PURPOSE:To immediately detect presence or absence of a fault of a power facility by inputting image data at the time of relighting a light source light after the light is turned OFF by an image input unit, comparing its image data with image data previously stored in a normal image memory, and judging whether a difference between both images exceeds an allowable range or not. CONSTITUTION:An illuminator 1 is turned OFF by a light source driver 21 after an image monitoring is finished. The illuminator 1 is again turned ON at the time of monitoring the image, and the image data at that time is input to an image data input unit 5. The input image data is compared with an image data at the time of normal power facility stored in an image data memory 3 by a specific part judging unit 7, and whether a difference between both images exceeds an allowable range or not. When the specific part exceeding the range is not detected, the image data of the normal power facility is monitored by an image monitor 14. When the specific part is detected, the image data at the time of the normal power facility is locally corrected by the monitor 14, and monitored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power equipment monitoring device used for remote monitoring of power equipment.

Conventionally, an overhead line, which is one of the electric power facilities, has been inspected by a person visually walking or walking on a helicopter and directly visually confirming it with binoculars.
As disclosed in Japanese Patent Publication No. 9-85909, a television camera shoots from inside a helicopter and records it on a video tape recorder (hereinafter referred to as a VTR), or in actual use 61-192.
As disclosed in Japanese Patent No. 614, a method has been adopted in which a TV camera is mounted on a self-propelled inspection machine that travels on an overhead line, and the TV camera stores the TV camera while it is running. In these cases, the video of the VTR is reproduced after the return ring recovery, and it is confirmed by watching the monitor television whether there is any abnormality.

The abnormality to be detected is, for example,
As shown in (a) to (c) of FIG. 3, there are strand breaks p, traces of dust, foreign matter adherence q, twisted wire irregularities r, etc., especially strand breaks as shown in FIG. 6 (a). If left unattended, the number will gradually increase and it may develop into a major accident such as a ground fault or a short circuit. Therefore, it is necessary to detect and deal with it as soon as possible.

[0004]

However, in this way, in detecting the presence or absence of an abnormality by the VTR, the VT after the return ring recovery is performed.
Since the presence / absence of an accidental abnormality is detected only after the image of R is reproduced, the abnormality of the overhead line cannot be immediately realized.

By the way, a technique for monitoring an image of a person or the like displayed by light from a light source by a monitoring unit located apart from the person has been widely put into practical use in various fields.
An image of a person or the like in the supermarket is taken by a camera installed in an automatic payment machine (ATM) of a supermarket or a bank, the image data is transmitted to a monitoring unit, and the image data is monitored by the monitoring unit. It is carried out to prevent accidents such as theft. In addition, recently, when transmitting the image captured by the camera to the monitoring unit,
Techniques for compressing data using a telephone line and transmitting the image data to a remote device far from the camera have also been developed.

Therefore, such a technique is also applied to the monitoring of electric power equipment such as an overhead line, and an apparatus capable of constantly monitoring an image taken by the television camera in the helicopter by a remote device remote from the overhead line is provided. If developed, it will be possible to immediately detect whether there is an abnormality in the overhead line.However, power equipment such as overhead lines does not move at all. Although it is not necessary to transmit to the remote device from the site side (the place where the power facility is installed), the light source light is always applied to the power facility, and the image data of the power facility is always transmitted to the remote device. The energy of light source irradiation and data transmission is wasted,
The problem was that it was uneconomical.

Further, as described above, when transmitting image data captured by a camera to an example of a remote device, it is generally known that the transmission time increases as the data amount increases. For example, when the illumination is always on and the image data immediately before monitoring is compared with the image data at the time of monitoring, compared to the case where the data for the change in both images is transmitted, When transmitting all the image data after the lighting is turned on from the state where there is no image, it takes a long time to transmit, so instead of always turning on the light source light and transmitting the image data of the power equipment to the remote device. If the light is turned on and the image data is transmitted to the remote device only when the user wants to monitor the image of the power equipment, the image data of the power equipment after the lighting is turned on from the state where there is no image when the light is not turned on. Will be transmitted, there is a problem that very it takes time to transmit the image data. Therefore, it takes a very long time to monitor the electric power equipment at a plurality of locations, and it is impossible to immediately detect the presence or absence of the abnormality as in the case of detecting the presence or absence of the abnormality by the VTR.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to be able to immediately detect the presence or absence of an abnormality in power equipment and to economically monitor the power equipment. To provide a device.

[0009]

In order to solve the above problems, the present invention is configured as follows. That is, a power equipment monitoring device having a light source that irradiates the power equipment with light, and a monitoring unit that captures and monitors an image displayed by the light source light, wherein the light source is turned on when the image is monitored, A light source drive unit that turns off the light source light after the monitoring is connected, and a normal image storage unit that stores image data when the power equipment is normal is connected to the monitoring unit; An image capture unit that captures data;
The image data of the image capturing unit and the image data of the normal image storage unit are compared to determine whether the difference between the two images exceeds the allowable range, and no correction is made when a peculiar portion exceeding the allowable range is not detected. A singular part determination unit that outputs a signal and outputs a signal with correction when a singular part is detected; and when the singular part determination unit determines that there is no correction, monitors the image data when the power equipment is normal and corrects If it is determined that the image data is normal, the image monitor unit for correcting and monitoring the image data when the power equipment is normal is provided.

[0010]

In the present invention having the above-mentioned structure, the light source drive unit turns off the light source light after the image monitoring is finished, and the light source light is turned on again during the image monitoring, and the image data at that time is taken into the image taking unit and taken in. The image data obtained is compared with the image data of the normal power equipment stored in the normal image determination unit by the unique portion determination unit to determine whether the difference between the two images exceeds the allowable range, and the allowable range is determined. When a singular part exceeding the range is not detected, the image monitor section monitors the image data when the electric power equipment is normal, and when a singular part is detected, the image monitor section corrects the image data when the electric power equipment is normal. To be monitored.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a power equipment monitoring device according to the present invention. In the figure, a lighting device 1 functioning as a light source for irradiating power equipment such as overhead lines with light,
A monitoring unit 22 that captures and monitors an image projected by the light source light of the lighting device 1 is provided, and the monitoring unit 22 transmits the information of the site where the camera 2 and the power facility are installed. 19, a center device 20 that receives a signal from the field transmission device 19, and a monitor device 13 that monitors an image. The on-site transmission device 19 is configured to include an image data storage device 3, a data comparison device 4, an image data acquisition device 5, an illumination lighting command device 6, a singular part determination unit 7, and an image acquisition command reception device 11. , Peculiar part determination unit 7
Is a no-change signal transmission device 8, a change amount magnitude determination device 9,
It is configured to include a change amount transmission device 10.

The center device 20 includes an image capture command transmission device 12, an image data recording device 15, an image data correction device 16,
It is configured to have a no-change signal receiving device 17 and a change amount receiving device 18. It should be noted that the monitor device 13, the image data recording device 15, the image data correction device 16, and the unchanged signal receiving device 1
7. An image monitor unit 14 is formed by the change receiving device 18, and the image capture command transmitting device 12 of the center device 20 is formed.
Then, the light source drive unit 21 that turns on the light source light of the illumination device 1 at the time of image monitoring by the illumination lighting command device 6 and the image capture command receiving device 11 of the field transmission device 19 and turns off the light source light after the image monitoring is completed. Has been formed.

The image capture command transmission device 12 transmits an image capture signal at the time of image monitoring and an image capture end signal after the image monitoring is completed by operating an operation unit (not shown). A command signal is applied to the image capture command receiving device 11. The image capture command receiving device 11 receives the signal added from the image capture command transmitting device 12, and when receiving the image capture signal, adds the illumination lighting ON signal to the illumination lighting command device 6 and at the same time receives the image data capturing device. Image data acquisition signal is added to 5, and further image acquisition command transmission device 12
When the image capture end signal is received from the image data capture end signal, the image data capture end signal is added to the image data capture device 5.
An illumination lighting off signal is added to the illumination lighting command device 6.

The illumination lighting command device 6 is configured to turn on the lighting device 1 when an illumination lighting on signal is added from the image capture command receiving device 11, and an illumination lighting off signal is added from the image capture command receiving device 11. Sometimes, the lighting device 1 is turned off. The image data capturing device 5 captures the image data captured by the camera 2 when the image capturing command receiving device 11 receives the image capturing signal, and the image capturing command receiving device 11 receives the image capturing end signal. In this case, the image data captured by the camera 2 is captured. Thus, the image data capture device 5 is the illumination device 1 in this way.
It functions as an image capturing unit that captures image data of the power equipment when the lighting device 1 is turned on again after the light source light is turned off, and this image data is added to the data comparison device 4.

The data comparison device 4 includes the image data input to the image data storage device 3 and the image data acquisition device 5.
The image data storage device 3 functions as a normal image storage unit that stores image data when the power facility is normal, and the image data storage device 3 functions as a normal image storage unit. The image data at the normal time is input, and the data comparison device 4 adds the difference between the images of the image data storage device 3 and the image data acquisition device 5 to the change amount determination device 9 as a change signal.

The change magnitude determination device 9 has a memory unit (not shown), and this memory unit allows the difference between the image data of the image data storage device 3 and the image data of the image data acquisition device 5. The range is input, and the change amount determination device 9 compares the allowable range input to the memory unit with the change signal added from the data comparison device 4, and the change signal exceeds the allowable range. Sometimes, a portion exceeding the allowable range is determined as a unique portion, a unique portion non-detection signal is added to the unchanged signal transmitting device 8 when the unique portion is not detected, and a unique portion detection signal and a variation signal are detected when the unique portion is detected. Is added to the change transmission device 10.

The no-change signal transmission device 8 receives the peculiar portion non-detection signal from the change amount determination device 9 and outputs a no-change signal (no-correction signal). Add to. The change transmission device 10 receives the singular portion detection signal and the change signal of the change magnitude determination device 9 and outputs a modified signal and a change signal, and both signals are added to the change receiving device 18.

That is, the data comparison device 4, the variation magnitude determination device 9, the unchanged signal transmission device 8, and the variation transmission device.
As described above, the unique portion determination unit 7 formed of 10 compares the image data of the image data storage device 3 with the image data of the image data capturing device 5 and the difference between the two images exceeds the allowable range. If a singular part exceeding the allowable range is not detected, an uncorrected signal is output, if a singular part is detected, a corrected signal is output, and a change signal that is the corrected part is output. It is supposed to do.

The no-change signal receiving device 17 receives the no-change signal (no-correction signal) from the no-change signal transmitting device 8 and adds the no-change signal to the image data recording device 15. Upon receiving the modified signal and the modified signal from the variation transmitting device 10, both signals are added to the image data modifying device 16, and the image data modifying device 16 changes the modified signal and the modified signal from the variation receiving device 18. Upon receiving the minute signal, the image data recording device 15 is supplied with an image data correction signal for correcting the image data input to the image data recording device 15 in advance when the power facility is normal.

The image data recording device 15 receives the image data when the electric power equipment is normal, that is, the image data similar to the image data input to the image data storage device 3, and the unchanged signal receiving device 17 No change from the signal,
That is, when the uncorrected signal is added, the image data when the electric power equipment is normal is added to the monitor device 13, and when the image data correction signal is added from the image data correction device 16, the image data when the electric power equipment is normal is specified. That is, when the image data correction signal is added, the image data when the power equipment is normal is corrected by the amount by which the change signal is added, and the corrected image data is displayed on the monitor device 13 side. Add.

The monitor device 13 receives the signal added from the image data recording device 15 and monitors the image. When the image data at the time of normal power equipment is added, the image data is monitored to obtain the image data. When the image data after the peculiar partial local correction is added from the recording device 15, the corrected image data is monitored.

This embodiment is constructed as described above,
Next, the operation will be described. First, the lighting device 1 is turned on when the overhead line is normal, the overhead line is imaged by the camera 2, and the image data at this time is input to the image data storage device 3 as the normal data. Since the power equipment is not normally monitored, the image capture command transmission device 12 adds an image capture end signal to the image capture command reception device 11, and the illumination lighting command device 6 outputs the illumination lighting off signal. The lighting device 1 is turned off. At this time also, the image data storage device 3
The image data when the overhead line is normal is stored in.

Then, by operating the operation unit (not shown) of the center device 20 during the image monitoring of the electric power equipment, the image capturing command transmitting device 12 receives the image capturing command receiving device.
When the image capture signal is added to 11, the image capture command receiving device 11 applies the image capture command signal to the illumination lighting command device 6 and at the same time adds the image data capture command signal to the image data capture device 5. Then, the lighting lighting command device 6 relights the lighting device 1 by the lighting lighting ON signal, the image data capturing device 5 captures the image data captured by the camera 2, and adds the captured image data to the data comparison device 4. . The data comparison device 4 compares the image data added from the image data acquisition device 5 with the image data previously input to the image data storage device 3, and uses the difference between the two images as a variation signal to determine the variation magnitude determination device 9 Add to.

Upon receiving the change amount signal, the change amount magnitude determination device 9 receives the image data A of the image data storage device 3 and the image of the image data acquisition device 5, for example, as shown in FIG. When there is not much difference in the data B and the variation is within the preliminarily input allowable range, it is determined that the unique portion is not detected, and a unique portion non-detection signal is added to the no-change signal transmitting device 8, and, for example, As shown in FIG. 2B, the difference between the image data A in the image data storage device 3 and the image data C in the image data capturing device 5 is large, and when the change exceeds the allowable range, a peculiar portion is detected. Then, the unique portion detection signal and the variation signal (the variation image data E signal) are added to the variation transmission device 10.

Then, the no-change signal transmission device 8 transmits the no-change signal to the no-change signal receiving device 17, and the no-change signal receiving device 17 receives the no-change signal and adds it to the image data recording device 15, As shown in FIG. 2A, the recording device 15 uses the monitor device 13 to record the image data D during normal operation of the overhead line, which is input to the image data recording device 15 in advance.
In addition to the above, the monitor device 13 displays the image data D when the power equipment is normal.
Is monitored as is. Also, when the change amount signal is added by the change amount transmitting device 10, the change amount receiving device 18 receives the change amount signal, and as shown in FIG. The singular partial local correction is performed on the image data D when the overhead line is normal, which is previously input to the recording device 15, based on the signal of the changed image data E,
The monitor device 13 monitors the corrected image.

According to the present embodiment, by the above operation, the image data captured by the image data capturing device 5 on the field transmission device 9 side and the image data storage device 3 are input in advance during the image monitoring of the overhead line. When the difference between the two images is within the allowable range, an uncorrected signal is transmitted to the center device 20 side, and the image when the overhead line is normal is monitored and both images are monitored. When the difference exceeds the allowable range, the image data corresponding to the change is transmitted from the field transmission device 9 side to the center device 20 side, and the peculiar partial local correction of the image data when the overhead line is normal is performed and monitored. Moreover, it is not necessary to transmit all the image data at the time of image monitoring from the field transmission device 19 to the center device 20 side, and the data transmission time can be shortened accordingly. for that reason,
It is possible to immediately monitor the image data at the time of monitoring the overhead line with the monitor device 13, and for example, when there is an abnormality in the overhead line, it is possible to immediately detect the presence or absence of the abnormality.

Further, the power equipment monitoring apparatus of this embodiment is provided with a peculiar portion judging section 7, and the peculiar portion judging section 7 has image data of the image data storage device 3 and an image of the image data capturing device 5. A permissible range of change is given to determine whether the difference from the data is due to an abnormality in the overhead line or due to an error such as when capturing the image.
Since it is determined whether or not the image data is corrected depending on whether or not the change is within the allowable range, it is possible to detect the presence or absence of an abnormality in the overhead line more quickly and clearly.
Further, in this embodiment, the illumination device 1 is used during the image monitoring of the overhead line.
Is turned on, and the lighting device 1 is turned off after the image monitoring is completed. Therefore, the lighting device 1 is not normally turned on, and energy saving can be achieved correspondingly, which is economical. Is.

The present invention is not limited to the above-mentioned embodiments, and various embodiments can be adopted. For example, in the above embodiment, the light source drive unit 21 is configured by the image capture command transmission device 12, the image capture command reception device 11, and the illumination lighting command device 6, but the light source drive unit 21 is not necessarily the image capture command transmission device 12. The image capturing command receiving device 11 and the illumination lighting commanding device 6 are not necessarily used, and the light source may be driven so that the light source light is turned on at the time of image monitoring and the light source light is turned off after the image monitoring is completed.

Further, in the above embodiment, the unique portion judging section 7
Consists of a data comparison device 4, a no-change signal transmission device 8, a change magnitude determination device 9, and a change transmission device 10.
The unique portion determination unit 7 is not necessarily configured by the data comparison device 4, the no-change signal transmission device 8, the change magnitude determination device 9, and the change transmission device 10, and a normal image storage unit such as the image data storage device 3 And the image data of the image capturing unit such as the image data capturing device 5 are compared to determine whether the difference between the images exceeds the allowable range, and when no unique portion exceeding the allowable range is detected, no correction signal And output
It suffices that the modified signal is output when the unique portion is detected.

Further, in the above embodiment, the image monitor unit 14
Is an image data recording device 15, an image data correction device 16, a no-change signal receiving device 17, a change amount receiving device 18, a monitor device.
Although it is configured by 13, the image monitor unit 14 is not necessarily configured as described above, and when the image determination unit determines that there is no correction, the image data when the power facility is normal is monitored and it is determined that there is a correction. When the determination is made, it may be configured so that the image data when the power facility is normal is corrected by the peculiar partial local portion and monitored.

Further, in the above embodiment, one center device 20 is arranged corresponding to one on-site device (lighting device 1, camera 2, on-site transmission device 19).
A plurality of site side devices and one center device 20 may be connected, or a plurality of site side devices and a plurality of center devices 20 may be connected.

Further, although the above description has been made by taking an example of monitoring for detecting whether or not there is an abnormality in an overhead line as an electric power facility, the power facility monitoring apparatus of the present invention can detect whether or not there is an abnormality in the overhead line. It is not limited to being used only, but is applied to remote monitoring of various electric power facilities.

[0033]

According to the present invention, when the power equipment is monitored, the image data is captured by the image capturing unit at the time of relighting after the light source light is turned off, and the image data is stored in advance in the normal image storage unit. The image data is compared to determine whether the difference between the two images exceeds the allowable range.When no singular part exceeding the allowable range is detected, an uncorrected signal is output and the image data when the power equipment is normal remains unchanged. When a peculiar portion is detected, a signal with correction is output and the image data when the power equipment is normal is locally peculiarly corrected and monitored by the image monitor portion. Of the image data, only the signal of the peculiar part needs to be transmitted to the remote device side, and the data transmission is short compared to transmitting and monitoring all the image data to the remote device. It becomes possible to perform between, it is possible in a short time monitoring of power equipment.

Therefore, when there is an abnormality in the electric power equipment, it is possible to immediately monitor the abnormality, and the state of the abnormality can be immediately confirmed, so that the electric power can be very efficiently and surely supplied. It is possible to detect the presence or absence of equipment abnormality.

Further, according to the present invention, the light source drive unit turns on the light source light only when the image of the power facility is monitored,
Since the light from the light source is turned off after the image monitoring is completed, it is possible to save energy by that amount, and as described above, the amount of image data transmitted from the power equipment side, for example, by a remote device can be small. Moreover, the data transmission cost can be reduced, and the device can be made very economical.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a power equipment monitoring device according to the present invention.

FIG. 2 is an explanatory diagram showing the operation of the above embodiment.

FIG. 3 is an explanatory diagram showing an example of an abnormal point on an overhead line.

[Explanation of symbols]

 1 Lighting Device 3 Image Data Storage Device 5 Image Data Acquisition Device 7 Singular Part Judgment Unit 10 Change Transmission Device 14 Image Monitor Unit 16 Image Data Correction Device 21 Light Source Driving Unit

Claims (1)

[Claims] 1. A power equipment monitoring device having a light source for irradiating power equipment with light and a monitoring unit for capturing and monitoring an image projected by the light source light, wherein the light source is turned on with the light source light during image monitoring. A light source drive unit that turns off the light source light after the image monitoring is completed is connected to the monitoring unit, and a normal image storage unit that stores image data when the power equipment is normal; An image capturing unit that captures the image data of the equipment; compares the image data of the image capturing unit with the image data of the normal image storage unit, and judges whether the difference between the two images exceeds an allowable range A singular part determination unit that outputs an uncorrected signal when a singular part exceeding the range is not detected, and outputs a corrected signal when a singular part is detected; and when the singular part determination unit determines that there is no correction Is provided for monitoring the image data when the power equipment is normal, and for correcting the image data when the power equipment is normal and correcting the peculiar partial local area for monitoring when the power equipment is normal. Power equipment monitoring device.