Integrated directional non-contact cable fault detection and positioning sensor device

Abstract

The invention discloses an integrated directional non-contact cable fault detection positioning sensing device which comprises a magnet ring, two conductor loops, an insulting outer sleeve and a cushioning pad. The magnet ring, the conductor loops, the insulting outer sleeve and the cushioning pad are of an annular tubular type structure in main body. The device is formed by two symmetrical semi-circular structures respectively in a tight connection mode. The magnet ring and the two conductor loops are tightly embedded into the insulting outer sleeve in sequence, and the cushioning pad is used for being filled between the magnet ring and the conductor loops and a cable to be measured. According to the integrated directional non-contact cable fault detection positioning sensing device, a tubular type capacitor formed by the conductor loops and the cable to be measured is used so that non-contact coupling transmission of high-frequency signals in a cable fault positioning device through a reflection method is achieved, and electrical connection between the fault positioning device and the cable to be measured is avoided; by the adoption of the magnet ring, the inductance of the section of the cable to be measured is strengthened, the signal transmission direction can be controlled, and thus directional detection of the cable to be measured is achieved; the device can be applied to fault positioning of a complex cable network system and has the advantages of being convenient and fast to mount, high in security and the like.

Description

technical field [0001] The invention belongs to the field of cable fault detection, and relates to an integrated directional non-contact detection and positioning sensor device for detection and positioning of cable faults by a reflection method. Background technique [0002] In the field of cable fault detection and location, the effect of reflection method is remarkable, and its application is the most widely. The reflection method injects a signal into the cable to be tested, and the signal is reflected at the fault point. By collecting the reflected signal and identifying the phase characteristics of the reflected signal, the detection and location of the fault are realized. [0003] SSTDR (SpreadSpectrumTimeDomainReflectometry) is the spread spectrum time domain reflectometry, its principle block diagram is attached figure 1 shown. When the switch Sw is closed, the incident signal is sent into the cable under test, and the incident signal will be reflected at the faul...

AI Technical Summary

Problems solved by technology

[0014] However, due to the electrical connection between the coupling capacitor and the power line, when installing the power carrier machine, it is necessary to modify the power line and destroy the original power line system structure

Moreover, the line trap is an inductive device connected in series on the power line. When connected, the power line also needs to be modified and transformed, which will also destroy the original power line system structure.

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