Cable path detection multi-frequency transmitting system and method, cable path detection instrument

Abstract

The invention belongs to the technical field of cable path detection, and discloses a cable path detection multi-frequency transmission system and method and a cable path detection instrument, which can simultaneously realize the transmission of multiple frequency signals. A source coil is added into resonant transmission coils, and the step-by-step amplification of a current is realized by usingthe coupling relationship between the resonant transmission coils and the source coil. Each resonant transmission module is a resonant cavity formed by an inductive coil and a capacitor, different inductances and capacitances correspond to different resonant frequencies, and when the source coil transmits a multi-frequency signal, different resonant transmission coils will work at the corresponding resonant frequencies to realize the transmission of resonant point frequency signals. The multiple frequency signals transmitted by the multiple resonant coils are added in the space vector to realize the propagation of multiple frequency signal magnetic fields in the space. The invention is suitable for a variety of on-site complex situations. The signal frequency can be selected without adjusting a signal generator and the efficiency is greatly improved. A cable can be detected without contacting the cable or when the cable is running.

Description

technical field [0001] The invention belongs to the technical field of cable path detection, and in particular relates to a cable path detection multi-frequency emission system and method, and a cable path detection instrument. Background technique [0002] my country's urban and rural power grids currently use a large number of power cable transmission and distribution lines, but with social development, power grid transformation, cable relocation and faulty cable repairs, the original landforms and underground cables have changed a lot, and the original drawings are no longer correct. Reflecting the laying path and buried depth of the cable, the detection of the cable path and the identification of the cable have become an extremely important part of the cable maintenance work. If the cable path cannot be clearly defined, the incidence of accidents that damage the power supply cable during construction will increase; without knowing the specific direction of the cable, it i...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the current cable path detection method has a complicated transmission system circuit, and can only realize the transmission of one frequency at a time, and needs to manually switch the transmission frequency multiple times, which is cumbersome and inefficient; The frequency transmission system cannot transmit multiple frequency signals at the same time, and the operation is more complicated and difficult to implement

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