Proximity early warning system for prevention of external damage to power transmission line

Abstract

The invention discloses a proximity early warning system for prevention of external damage to power transmission lines. An electric field detection device is powered by a power source module; the electric field detection device detects whether charged bodies exist around through a three-dimensional space electric field probe of the electric field detection device; when detecting a charged body, the electric field detection device acquires the electric field signals of the charged body and converts electric field signals to voltage signals; the voltage signals are processed by a protection circuit, an amplification circuit, a filter circuit and a comparison circuit; processed signals are subjected the AD acquisition of a single-chip microcomputer, so that original signals can be obtained; and the original signals are sent to an alarm mechanism through a CPU system and a wireless transmission module. With the proximity early warning system of the invention adopted, whether charged bodies exist around large-scale mechanical equipment and engineering vehicles, such as cranes, can be monitored in real time; and distances between the large-scale mechanical equipment and engineering vehicles, such as cranes, and high-voltage power transmission lines can be monitored in real time. The system has the advantages of simple equipment structure, reliable performance and accurate measurement items.

Description

technical field [0001] The invention relates to an early warning device, and more specifically relates to the technical field of an early warning device for transmission lines. Background technique [0002] In the construction process of transmission line laying and maintenance, large-scale mechanical equipment such as cranes and engineering vehicles play a very important role in electric power construction. Taking cranes as an example, the main function of cranes is to lift low objects to high places or Lifting objects from high places to low places is convenient for workers, saves labor and improves work efficiency of workers. However, when the crane is working on the power site, especially when working near or below the high-voltage transmission line, it is very easy to interfere with the high-voltage equipment. If the distance is lower than the safe distance of the voltage level, even touching high-voltage equipment, there will be a danger of electric shock, and cause th...

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Problems solved by technology

[0002] In the construction process of transmission line laying and maintenance, large-scale mechanical equipment such as cranes and engineering vehicles play a very important role in electric power construction. Taking cranes as an example, the main function of cranes is to lift low objects to high places or Lifting objects from high places to low places is convenient for workers, saves labor and improves work efficiency of workers. However, when the crane is working on the power site, especially when working near or below the high-voltage transmission line, it is very easy to interfere with the high-voltage equipment. If the distance is lower than the safe distance of the voltage level, even touching high-voltage equipment, there will be a danger of electric shock, and cause the power system to be short-circuited to the ground, which will not only cause major safety accidents in the power system, but also bring extreme safety hazards to the operators. big security risk

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