Non-contact electrification concealed wire recognizing device

Abstract

The invention discloses a non-contact electrification concealed wire recognizing device. The non-contact electrification concealed wire recognizing device comprises alternating current electric field detecting units, signal processing units and concealed wire position recognizing units, the alternating current electric field detecting units are of a plane array type structure, namely, the alternating current electric field detecting units are placed on a plane in an array mode, each electric field detecting unit is connected with one signal conditioning unit, the signal processing units receive output signals of the signal conditioning units to scan a plane array periodically and carry out coherent processing on known open wire signals, then the position of an electrification alternating current wire is judged, the concealed wire position recognizing units receive the position information of the signal processing units, and accordingly the position information of an electrification concealed wire is displayed. The electrification concealed wire is measured through an array sensor, coherent processing is carried out on the signals, and the effect on the measuring result from the outside electromagnetic interference is avoided. Meanwhile, the position and the direction of the electrification concealed wire can be accurately displayed through a plane array type display unit, and a safety guarantee is brought to power construction.

Description

technical field [0001] The invention relates to an identification device applied to hidden live wires, in particular to an identification device capable of identifying live cables buried in other non-metallic shielding objects. Background technique [0002] There are many ways to measure dark wires, mainly the following two: 1 Metal detection method: The measurement method based on the principle of metal detection has been perfected, and it is not possible to directly confirm whether the cable is live during the test. 2. Wave injection method: use the signal loop principle to inject test signals into the cable, and judge whether there is a cable at other positions based on the detected signal strength. This type of method includes indirect coupling and direct coupling. Direct coupling requires power-off detection. Due to the influence of the signal radiation range, it is usually impossible to directly determine the position and direction of the live cable. The direct measur...

AI Technical Summary

Problems solved by technology

[0002] There are many methods for dark line measurement, mainly the following two: 1 Metal detection method: The measurement method based on the metal detection principle has been perfected, and it is not possible to directly confirm whether the cable is charged during the test

2. Wave injection method: use the signal loop principle to inject test signals into the cable, and judge whether there is a cable at other positions based on the detected signal strength. This type of method includes indirect coupling and direct coupling. Direct coupling requires power-off detection. Due to the influence of the signal radiation range, it is usually impossible to directly determine the position and direction of the live cable

In the actual power engineering construction, it is usually encountered that the position and direction of the live cable are detected continuously, and the use of the wave injection method and the metal detection method is limited.

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