A cable identification device

Abstract

The invention discloses a cable identification device. The cable identification device comprises a signal generator and a signal receiver, wherein the signal generator comprises a power module, a high-voltage transformation unit and a discharge control unit, the high-voltage transformation unit comprises an electronic pulse generation module as well as a voltage detection circuit and a pulse capacitor which are connected onto the electronic pulse generation module in parallel, and the discharge control unit comprises time relays for controlling periodic discharge for cables, direct current electromagnets and a mechanical periodic discharge switch connected to an output end of the pulse capacitor; the signal receiver comprises a flexible Rogowski coil, a control unit, a signal processing unit connected with the flexible Rogowski coil, a data acquisition unit, a triggering unit and a human-machine interaction unit which are connected with the control unit as well as a power management module for supplying electricity to all the units in the signal receiver. The cable identification device has characteristics of stable and reliable identification performance, high anti-interference performance, high applicability, small size and the like.

Description

technical field [0001] The invention relates to a cable identification device, which belongs to the technical field of cable identification. Background technique [0002] With the rapid development of urban economy and the improvement of the quality of life of urban residents, people have higher and higher requirements for living environment and urban appearance. Because of its safety, reliability, and advantages of beautifying the city and the layout of factories and mines, the power cable power supply has made the cable a trend in the new century and new era. It has a new practical effect on beautifying the urban environment and improving urban functions, and has been increasingly recognized. The wider the application. With the rapid development of the urban economy, the demand for electricity has also increased significantly, resulting in more and more cable repair operations and cable relocation projects. In relocation and emergency repair operations, multiple cables w...

AI Technical Summary

Problems solved by technology

[0006] In order to achieve safety, reliability and small size and light weight, the currently used cable identification instrument uses small and medium power for the signal generator, and the amplitude of the added current signal is affected by the grounding resistance of different cables, which often causes severe interference to the application of the signal generator by induced electricity. The pulse signal of the pulse signal, after the induction current reaches a certain value, the overvoltage protection action of the instrument will make it difficult to apply the signal. One of the reasons why the commonly used digital low-power cable identification instrument cannot work normally, which greatly affects the on-site efficiency of cable repairs and road relocation projects.

[0007] Moreover, whether it is a domestic or foreign imported instrument, the receiving instrument and the probe are relatively large, which is not suitable for the application of the test site, such as the cable well trench, where the space is small, it is difficult to move the receiving instrument, and sometimes it is even difficult to carry the instrument into the well trench; at present The laid cables are relatively tightly arranged, and the distance and space between the cables are too small to place the probe or caliper between them, which directly affects the smooth progress of the test

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