JPH088729B2 - Self-driving recorder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic running recording apparatus which is used for monitoring power transmission lines between steel towers and which can record an image of a monitoring area.

[0002]

2. Description of the Related Art Electric power companies, companies that generate electricity by themselves, and the like, use a plurality of steel towers to transmit electric power at a high voltage through transmission lines. In such a power transmission route, in order to prevent accidents such as contact ground faults caused by trees growing and contacting power transmission lines, accidents caused by birds such as crows, and accidents caused by flying objects such as kites and galvanized iron, regular maintenance work is performed by track maintenance workers. You can climb the tower and visually check the power line with binoculars.
Or you can do aerial surveillance work with a helicopter,
We maintain and manage power lines and towers.

[0003]

By the way, the above-mentioned maintenance work requires a great deal of labor and personnel and goes against labor saving, and at the same time, there is a possibility that a worker may fall, a helicopter may crash, etc. It was very dangerous. In addition, there is also a drawback that it is not possible to deal with the need for re-verification at a later date because the past data is not stored.

[0004]

In order to solve the above-mentioned problems, the present invention firstly mounts a surveillance camera for photographing a surveillance area in the vicinity of the power transmission line on a steel tower supporting the power transmission line. A recording mobile vehicle capable of automatically traveling along a rope stretched between steel towers is provided, and the monitoring camera has a detection means for detecting that the recording mobile vehicle approaches the camera and a detection means for the detection means. Based on the above, a transmission control means for subjecting a video signal taken by the camera to a predetermined modulation and wirelessly transmitting to the recording mobile vehicle is provided, and the recording mobile vehicle is transmitted from the transmission control means. An automatic traveling recording device provided with a receiving means for receiving a radio signal to detect and extract the video signal, and a recording means for recording the video signal in a recording device. By touching the tower And a transmitting unit that wirelessly transmits a transmission command signal based on the operation of the switching unit, and the detecting unit detects the approach of the recording mobile vehicle by detecting the transmission command signal. The automatic traveling recording apparatus according to the first aspect, which is characterized in that

[0005]

According to the first aspect of the present invention, when the recording mobile vehicle automatically traveling on the rope approaches the surveillance camera, the detection means provided in the surveillance camera detects the approach and the transmission control means based on the detection. Applies a predetermined modulation to the video signal captured by the camera and wirelessly transmits it to the recording mobile vehicle. The receiving means of the recording mobile vehicle receives the radio signal and detects and extracts the video signal, and the taken-out video signal is recorded in the recording device by the recording means.

According to the second aspect of the present invention, the switch means operates when the recording mobile vehicle automatically traveling on the rope comes into contact with the tower, and the transmitting means sends a transmission command signal to the surveillance camera based on the operation of the switch means. To send wirelessly. The detection means of the surveillance camera detects the approach of the recording mobile vehicle by detecting the transmission command signal, and the transmission control means directs the video signal photographed by the surveillance camera to the recording mobile vehicle based on the detection. Will be transmitted wirelessly.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing an embodiment of the overall construction of the apparatus of the present invention. First, the outline of the present invention will be explained with reference to FIG. 1A to 1D are surveillance cameras installed in the steel towers A and B, and two cameras are installed in the middle part of the steel towers A and B, respectively, toward the other steel towers. Reference numeral 2 denotes a recording mobile vehicle movably provided along a ground line 3 stretched between the steel towers, which is self-propelled along the ground line 3.
For example, when it comes to the upper end of the steel tower B, the video signal wirelessly transmitted from the monitoring camera 1C immediately below is received, and the video signal can be recorded in the internal recording device. . The recording operation is repeated every time the moving vehicle 2 comes to the upper end of each steel tower, and then the recorded video is collected and the reproduction check is performed to manage the maintenance of the power transmission line. Instead of the ground line 3, the recording mobile vehicle 2 ′ may be moved along a wire rope 3 ′ separately stretched between steel towers. Incidentally, C is a power transmission line stretched between the steel towers.

Next, the configuration of each device will be described in detail. FIG. 2 shows an installation state of the surveillance camera 1C. In the figure, reference numeral 4 denotes an all-weather type camera housing installed on a fixed base 5 provided on a steel tower B by a pin 6 so that its angle can be adjusted, and a CCD camera 7 and a zoom lens 8 are housed therein. The angle of view is set and fixed by the zoom lens 8 (a fixed lens may be used instead of the zoom lens).

Reference numeral 9 is a control unit for controlling the operation of the CCD camera 7, which is fixed directly to the steel tower B and is connected to the CC.
It is electrically connected to the D camera 7.

A solar battery 10 is fixed to the steel tower B as a power source and supplies power to the battery in the control section 9.

FIG. 3 is a block diagram of the control unit 9, where 11 is an antenna and 12a is the recording mobile vehicle 2.
A receiving circuit (detection means) for receiving and detecting a transmission command signal wirelessly transmitted from the detection circuit and transmitting a detection signal, 12b is C
A transmission circuit for transmitting the video signal captured by the CD camera 7 to the moving vehicle as a weak radio wave, 13 is always charged with electricity from the solar cell 10, and normally the operating power is always supplied to each circuit of the control unit 9 In addition to supply, the receiving circuit 1
Based on the detection signal from 2a, the CCD camera 7 and the zoom lens 8 have a predetermined time (for example, 1 minute, the setting can be changed)
A battery circuit for supplying power, 14 is a CCD camera 7
Is processed as an NTSC video signal and the video signal processing circuit transmits the video signal to the modulation circuit 15 based on the detection signal from the receiving circuit 12a, and 15 is a video signal from the processing circuit 14. The signal is modulated by the AM wave collector modulation method (carrier frequency band 20
(0 MHz to 300 MHz is used) This is a modulation circuit for sending to the transmission circuit 12b. The transmission circuit 12b, the video signal processing circuit 14, and the modulation circuit 15 constitute transmission control means.

FIG. 4 is a side view of the recording mobile vehicle 2.
In the figure, reference numeral 16 denotes a support housing which holds the ground wire 3 by rollers 17a, 17b and 17a ', 17b' pivotally provided inside, and a driving force of a driving unit 18 causes the ground wire 3 to travel along the ground wire 3 ( It is possible to run in the direction of arrow F).

Reference numeral 19 denotes a main body supported on the lower portion of the support housing 16, and a VTR for recording a video signal therein.
Etc. are stored. Reference numerals 20a and 20b denote switches installed on both side surfaces of the main body 19, and when the moving vehicle 2 moves along the ground line 3 and comes to the left upper end or the right upper end of the tower, the switch 20a or 20b is provided. Comes into contact with a projection member provided on the steel tower to turn on, and it is possible to detect that the moving vehicle 2 has reached the upper end of the steel tower.

FIG. 5 shows a block diagram of the inside of the main body 19, in which 21 is an antenna, 22a is a transmission for modulating the transmission command signal and transmitting it as a weak radio wave to the control section 9 by radio. A circuit (transmitting means), 22b is a super-heterodyne receiving circuit for receiving a video signal (modulated wave) wirelessly sent from the control section 9 of the CCD camera 7 and converting it to a predetermined frequency, and 23 is the above-mentioned. A video detection circuit that amplifies and detects the video signal received by the reception circuit 22b, and 24 is a video signal processing circuit that converts the detected video signal into a VHS system recording signal. The reception circuit 22b and the video detection circuit 23 are provided. , Video signal processing circuit 24
The receiving means is constituted by.

Reference numeral 25 is a VHS system VTR (8 mm video may be used) for recording the video signal, and 26 is a control circuit including a microcomputer which stores a series of operation procedures shown in FIG. 6, and is driven in accordance with the stored operation procedure. While controlling the drive of the unit, a transmission command signal (a command signal for causing the control unit 9 to transmit the video signal from the CCD camera 7 for a short time) is sent to the transmission circuit 22a based on the detection signal from the switch 20a or 20b. It controls the reception circuit 22b, the video detection circuit 23, the video signal processing circuit 24, the VTR 25, etc. based on the transmission and the reception of the video signal. Reference numeral 27 denotes a battery, which supplies power to each of the circuits, the VTR, and the drive unit 18.

The present invention is constructed as described above. Next, the operation of the present invention will be described with reference to the flowchart of FIG. First, the control circuit 26 in the recording mobile vehicle 2 sends a drive command signal to the drive unit 18 (P1). Based on the command signal, the drive unit 18 drives the rollers 17a, 17b.
And 17a 'and 17b' are driven to drive the mobile vehicle 2. Therefore, the recording moving vehicle 2 is indicated by the arrow F along the ground line 3.
Drive in the direction.

When the recording mobile vehicle 2 comes to the left upper end of the tower B, the switch 20a comes into contact with the projecting member of the tower and turns on, and the control circuit 26 detects that the switch 20a is on (P2). . The control circuit 26 uses the switch 20
Based on the detection of ON of a, a drive stop signal is sent to the drive unit 18 to stop the traveling of the moving vehicle 2 (P3).

Next, the control circuit 26 sends a transmission command signal to the transmission circuit 22a. The transmission circuit 22a modulates the transmission command signal based on the input of the command signal and transmits it as a weak radio wave from the antenna 21 to the control unit 9 of the surveillance camera 1C.

The transmission command signal is received by the antenna 11 of the controller 9 and detected by the receiving circuit 12a. The receiving circuit 12a detects the video signal processing circuit 1 based on the detection.
4 and the detection signal to the battery circuit 13.

The video signal processing circuit 14 is activated based on the input of the detection signal, and the battery circuit 13 supplies power to the CCD camera 7 and the zoom lens 8 based on the input of the detection signal to monitor the camera. For a predetermined time (for example, 1 minute). The CCD camera 7 shoots a video signal in the direction of the steel tower A for a predetermined time based on the power supply, and the video signal is the video processing circuit 1.
4 is input. The video signal processing circuit 14 processes the input video signal as an NTSC video signal and sends it to the modulation circuit 15.

The modulation circuit 15 modulates the video signal by the AM collector modulation method and sends it to the transmission circuit 12b. Then, the transmission circuit 12b transmits the modulated video signal (modulated wave) as a weak radio wave from the antenna 11 to the recording mobile vehicle 2.

The modulated wave is the antenna 2 of the mobile vehicle 2.
The signal is received at 1 and converted to a predetermined frequency by the receiving circuit 22b, then amplified and detected by the video detection circuit 23 and sent to the video signal processing circuit 24. The control circuit 26 detects that the receiving circuit 22b has received the modulated wave, sends a video processing command signal to the video signal processing circuit 24, operates the VTR 25, and sets it to a recording state to drive it (P6). , P7).

The video signal processing circuit 24 converts the video signal detected by the detection circuit 23 into a VHS recording signal and sends it to the VTR 25. Therefore, the video signal is recorded in the VTR 25 for a predetermined time.

After that, the control circuit 26 detects whether or not the recording is completed. When the recording is completed, the control circuit 26 stops driving the VTR 25 (P9) and then returns to P1 again to start driving the moving vehicle.

Therefore, the moving picture recording vehicle 2 starts traveling again, and when it comes to the right upper end beyond the left upper end of the steel tower B, the switch 20b is turned on and the operations after P3 are repeated.
That is, next, the video imaged by the surveillance camera 1D is recorded for a predetermined time.

In the above description, the moving vehicle 2 stops at the upper left side of the steel tower B, but the moving vehicle 2 has already finished recording the video signals of the monitoring cameras 1A, 1B of the steel tower A by the above procedure. Therefore, the recording mobile vehicle 2 can record the image of the monitoring range T in FIG.

When the moving vehicle 2 is automatically traveling and the recording of the recording ranges of all the power transmission paths is completed, the magnetic tape recorded by the recording moving vehicle 2 is collected and the recorded image is reproduced and checked at the monitoring center. As a result, it is possible to monitor the condition of the power transmission line in each monitoring area.

As described above, according to the present invention, it is possible to automatically record the image of the monitored area in each power transmission path, and since no personnel are required, there is no danger of personal injury or the like, and the power transmission line is extremely safe. And maintenance of the steel tower can be performed.

Further, since the recording data once recorded can be stored, re-verification at a later date, comparison and examination with past data, and the like can be performed, which is extremely effective.

Further, since each of the monitoring cameras 1A to 1D and their control circuits are driven by the solar cell 10, maintenance management is easy.

Further, since each surveillance camera is fixed, it is possible to obtain a very clear image by eliminating the focus shift, image blurring, etc., and it is possible to perform accurate original image analysis using the recorded image. it can.

In the above embodiment, when the switch 20a of the recording mobile vehicle 2 comes into contact with the projecting member at the upper end of the steel tower and turns on, a transmission command signal is wirelessly transmitted from the recording mobile vehicle 2 to the surveillance camera. Although the structure in which 2 has reached the upper end of the steel tower is shown to the surveillance camera side, as another embodiment, a detection switch is provided on the upper end side of the steel tower, and the detection switch and the surveillance camera are connected by an electric wire (wired). , Recording mobile 2
May contact the detection switch when the switch is turned on, and the turn-on of the detection switch may be transmitted to the monitoring camera side through the electric wire. Also,
By providing a lighting device, nighttime monitoring can also be performed.

[0033]

As described above, according to the present invention, it is possible to automatically record the image of the monitoring area in each power transmission path, no personnel is required, there is no danger of personal injury, and the transmission is extremely safe. Maintenance and management of electric wires and towers can be performed.

Further, since the recording data once recorded can be stored, re-verification at a later date, comparison and examination with past data, etc. can be performed, which is extremely effective.

Further, since each surveillance camera is fixed, it is possible to obtain an extremely clear image by eliminating focus deviation, image blurring, etc., and it is also possible to perform accurate original image analysis using the recorded image. .

[Brief description of drawings]

FIG. 1 is a schematic view of the vicinity of a power transmission line showing an embodiment of a usage state of an automatic traveling type recording apparatus of the present invention.

FIG. 2 is a side view showing an installation state of a surveillance camera.

FIG. 3 is a block diagram of a control unit of the surveillance camera.

FIG. 4 is a front view of a recording mobile vehicle.

FIG. 5 is a block diagram of the inside of the main body of the recording mobile vehicle.

FIG. 6 is a flowchart showing an operation procedure of a control circuit of the recording mobile vehicle.

[Explanation of symbols]

 1A to 1D Surveillance camera 2 Recording mobile vehicle 3 Ground line 12a Reception circuit 12b Transmission circuit 14 Video signal processing circuit 15 Modulation circuit 20a, 20b Switch 22a Transmission circuit 22b Reception circuit 23 Video detection circuit 24 Video signal processing circuit 25 VTR

Claims (2)

[Claims] 1. A recording mobile vehicle capable of automatically traveling along a rope stretched between the steel towers, while a monitoring camera for photographing a monitoring area near the power transmission lines is fixedly installed on a steel tower supporting the power transmission line. The monitoring camera is provided with detection means for detecting that the recording mobile vehicle approaches the camera, and based on the detection of the detection means, the video signal photographed by the camera is subjected to a predetermined modulation and A transmission control means for wirelessly transmitting to the recording mobile vehicle is provided, and the recording mobile vehicle has a receiving means for receiving the wireless signal transmitted from the transmission control means and detecting and extracting the video signal. An automatic traveling type recording device provided with recording means for recording a video signal in the recording device. 2. The recording mobile vehicle is provided with a switch means that operates by abutting on the steel tower, and a transmitting means that wirelessly transmits a transmission command signal based on the operation of the switch means, and the detecting means has the 2. The automatic traveling recording apparatus according to claim 1, wherein the approach of the recording mobile vehicle is detected by detecting a transmission command signal.