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Cable fault detection method and device

A fault detection and cable technology, applied in the electronic field, can solve the problems of large fault distance error, false report, low sensitivity, etc., and achieve the effect of improving accuracy

Active Publication Date: 2020-01-07
SHANDONG SENTER ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the error of the fault distance measured by the above method is large, the sensitivity is low, and the phenomenon of "false report" is easy to appear when the pulse amplitude is too large

Method used

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Embodiment Construction

[0045] In order to explain the overall concept of the present application more clearly, the following detailed description will be given by way of examples in combination with the accompanying drawings.

[0046] The embodiment of the present application discloses a cable fault detection method, such as figure 1 shown, including the following steps:

[0047] Step 101, the fault detection device sends a pulse signal to the cable to be detected.

[0048] In the embodiment of this application, since the length of the cable to be detected is very long, when detecting whether the cable is disconnected, it can be divided into two modes according to the detection distance, one is short-distance detection, and the other is long-distance detection . The pulse amplitude, type and data processing method used by the two modes are different. Usually, the long-distance detection of the cable is carried out first, and the detection distance is from small to large, up to the maximum detecti...

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Abstract

The invention discloses a cable fault detection method and device. The method comprises the steps of enabling fault detection equipment to send a pulse signal to a to-be-detected cable; enabling the fault detection equipment to acquire waveform data of the reflected pulse signal; enabling the fault detection equipment to intercept waveforms, the absolute amplitude values of which are greater thana preset pulse amplitude threshold value, from the waveform data according to the threshold value; enabling the fault detection equipment to determine a fault waveform corresponding to a fault point according to the intercepted waveform; and enabling the fault detection equipment to determine the fault point and the distance of the fault point according to the fault waveform and waveform data of the fault waveform, wherein the distance of the fault point is a cable length between the fault point and the fault detection equipment. The cable fault detection method and device provided by the invention are capable of improving the correctness of the detection result.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a cable fault detection method and device. Background technique [0002] There are many uses of cables, mainly used for multiple functions such as control installation, connection equipment, power transmission, etc. It is a common and indispensable thing in daily life. [0003] The judgment of the cable fault point is based on the amplitude of the reflected wave. If the reflected wave amplitude reaches the preset value, it is judged as the fault point. [0004] However, the fault distance measured by the above method has a large error and low sensitivity, and the phenomenon of "false report" is easy to appear when the pulse amplitude is too large. Contents of the invention [0005] In order to solve the above problems, the present application proposes a cable fault detection method and device, which can improve the accuracy of detection results. [0006] In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/11
CPCG01R31/083G01R31/11
Inventor 刘在平张艳鹏张阳唐坤
Owner SHANDONG SENTER ELECTRONICS