JPH0236707A - Inspection method of overhead line - Google Patents

Abstract

PURPOSE:To enable transmission regardless of the position of a travel body by relaying the transmission between the traveling body provided with a camera and a control base through an artificial satellite. CONSTITUTION:A traveling body 2, i.e., an airship provided with a camera device 1, is controlled wirelessly along an overhead line in order to photograph supporting towers 4 and wires 5 arranged along the overhead line with the camera device 1. Photograph signals and operational signals for the travel body 2 are relayed through an artificial satellite 6 to a ground control base 7.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method of inspecting overhead power lines such as power transmission lines and ground wires while photographing them with a camera device.

``Prior Art'' Conventionally, as a method of inspecting overhead power lines such as overhead power lines and overhead ground wires, as well as their support towers and insulators, a manned helicopter is flown along the overhead power lines and binoculars are used from the air. A method of visual observation by a supervisor, and
As shown in Japanese Patent No. 2806, a method is known in which a model airplane equipped with a television camera is flown, and a video signal taken by the television camera is received by a receiver on the ground for monitoring.

``Problems to be Solved by the Invention'' However, with the method of observation using binoculars from a manned helicopter, it is difficult to accurately identify minute deformations on the surface of overhead wires, melt marks on wires caused by lightning, etc., or wire breaks. Damaged areas may be overlooked. In addition, with the method of using a model airplane, due to regulations under the Radio Law, it is only possible to control the model airplane within a relatively short range, so inspections of overhead power lines over long distances are required. It was difficult to do.

The present invention effectively solves the above-mentioned problems, and aims to provide an inspection method that can perform accurate inspection work and can be easily managed from a distance.

"Means for Solving the Problems" The present invention provides a method for moving a traveling body equipped with a camera device along an overhead power line by radio control, photographing the overhead power line with the camera device, and It is characterized by the fact that signals are exchanged between the body and a management base on the ground via artificial satellites.

``Operation'' The exchange of signals between the camera device, the traveling object, and the ground management base is not based on the frequency band within the regulatory framework of the Radio Law, but rather uses radio waves in the satellite communication frequency band to transmit artificial satellites. Since it is relayed, the control range of the camera device and traveling object (
distance) can be made extremely large.

“Example” An example of the inspection method of the present invention will be described below with reference to the drawings.

In the inspection method of this embodiment, a traveling body 2 consisting of an airship equipped with a camera device l is run (flying) along an overhead electric line 3 consisting of a power transmission line by radio control, and a supporting tower of the overhead electric line 3 is operated. 4. The electric wire 5 etc. are photographed by the camera device l, and the photographing signal and the control signal for the traveling object 2 are relayed by the artificial satellite 6 and transmitted to and from the ground control base 7. be.

The camera device 1 is composed of a video camera, a recording device, an image transmitter to the ground, a control device for adjusting the direction of the video camera, a receiver for radio control, etc. , or have the ability to operate a video camera.

The management base 7 on the ground is installed with an image receiver R (equipped with a video device, a recording device, etc.) for receiving image signals sent from various radio control transmitters and the image transmitter of the camera device 1.

The various radio control transmitters and receivers provided in the traveling body 2 and the management base 7 are those for satellite communication, such as a satellite communication antenna A that transmits and receives radio waves in the gigahertz band, such as a bara-hora antenna, A, the (lii
Additionally, signals can be exchanged via the relay antenna A3 of the artificial satellite 6.

Next, the inspection method will be explained.

At the management base 7 on the ground, workers are stationed to operate the vehicle 2 and collect information from the vehicle 2. While flying along the electric line 3 as shown in [A] Exit E in Fig. 1, the camera device 1 is activated by radio control of radio waves relayed by the artificial satellite 6, similarly to the traveling object 2.
Photograph the support tower 4, electric wires 5, etc. The photographed image is recorded in the recording device of the camera device 1, and is also sent from the image transmitter to the image receiver of the management base 7 via the artificial satellite 6, and is displayed on the video device. Then, the worker at the management base 7 inspects the overhead power line 3 without visually checking the sent image. Note that the images recorded in the recording device can be reproduced after being collected from the traveling object 1 and used for analysis of abnormal locations and the like.

By adopting such a method, it is possible to easily inspect and observe the overhead power line 3 over an extremely long distance from the ground control base 7 in a remote location, etc.
It can also be effectively applied to overhead power lines in places where it is difficult to access.

In the above embodiment, an airship is used as the traveling body 2, but the traveling body 2 may of course be other than this, for example, it may be a self-propelled aircraft that travels on overhead power lines.

"Effects of the Invention" As is clear from the above explanation, according to the inspection method of the present invention, overhead power lines can be inspected in detail using a camera device mounted on a traveling body, and Since signals are exchanged between the station and the control base on the ground using radio waves relayed by artificial satellites, it can be used even in the case of extremely long-distance overhead power lines, as well as in remote areas where the inspection target location of the overhead power line cannot be directly seen. This has the effect that inspection work can be carried out without any hindrance even on the ground.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing an example of a situation in which the inspection method of the present invention is implemented. 1... Camera device, 2... Running body, 3
...Overhead power line, 4...Support tower, 5.
...Electric wire, 6...Artificial satellite, 7...
・Management base, A1-A3... Antenna.

Claims (1)

[Claims] While moving a traveling body (2) equipped with a camera device (1) along the overhead power line (3) by radio control, the camera device (1) photographs the overhead power transmission line (3), and the camera device The artificial satellite (6
) is carried out by relaying the above.