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Hand-held automatic cable fault location device

A fault location and cable technology, which is applied in the fault location, measuring device, fault detection according to the conductor type, etc., can solve the problems that the positioning distance is easily affected by people, the test efficiency is low, and the test result is difficult to judge, so as to solve the blind spot of the test , Improve test efficiency, improve positioning accuracy and the effect

Active Publication Date: 2017-05-24
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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Problems solved by technology

[0002] The current cable testing device is mainly based on time domain reflection technology, which analyzes the fault type by manually judging the waveform, and realizes the distance judgment by manually controlling the cursor. The test efficiency is low and the positioning distance is easily affected by people.
The current time domain reflection test device is mainly for two-wire parallel cables. Once a bifurcation occurs, the test results are difficult to judge.

Method used

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  • Hand-held automatic cable fault location device
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  • Hand-held automatic cable fault location device

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] Such as figure 1 and 4 As shown, a kind of handheld cable automatic fault location device of the present invention includes its internal control circuit and handheld device; wherein, the internal control circuit includes on-chip programmable system SOPC, FPGA control logic, 4-channel high-speed analog-to-digital acquisition module and Test signal amplitude control module; the handset includes a shell and a TFT color screen set on the shell, a wave speed setting button, a distance measuring rotary switch, a lock screen button, a rechargeable power supply module, a BNC test interface and a test line. The test line is a BNC test line with a length of 3 meters.

[0038] Described FPGA control logic comprises pulse generation module, pulse selection module, AD sampling control module and FIFO storage module;

[0039] Described pulse generation module...

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Abstract

The invention discloses a hand-held automatic cable fault location device. The type of a cable fault can be judged automatically, the fault distance can be located automatically, and the test range can be selected according to the splitting condition of a cable. By manually selecting the test distance of a to-be-tested cable through a rotary switch, the problem on how to test a split cable can be solved. High-speed sampling is realized through a four-channel AD9288 chip, and the positioning accuracy and the system stability are improved. By setting a three-meter test extension line, the accuracy of short-distance fault location is improved, and the problem concerning test in a test blind area is solved. Test signals are calculated in real time through built-in SOPC, the fault type and the fault distance are calculated automatically, and the test efficiency is improved. Based on the design of SOPC, high flexibility is achieved, and upgrading can be carried out at any time according to user needs. By setting a screen locking key, test data can be locked in real time, and convenience is brought to users in test result recording.

Description

technical field [0001] The invention belongs to the technical field of cable detection, and in particular relates to a handheld cable automatic fault location device. Background technique [0002] The current cable testing device is mainly based on time domain reflection technology, which analyzes the fault type by manually judging the waveform, and realizes the distance judgment by manually controlling the cursor. The test efficiency is low and the positioning distance is easily affected by people. The current time domain reflection test device is mainly aimed at the two-wire parallel cable. Once a bifurcation occurs, the test result is difficult to judge. Contents of the invention [0003] In view of this, the object of the present invention is to provide a device that can automatically determine the cable fault type and automatically locate the fault distance, and can also select the test range according to the cable bifurcation situation. [0004] A cable automatic f...

Claims

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Application Information

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IPC IPC(8): G01R31/08G01R31/02
CPCG01R31/083G01R31/50Y04S10/52
Inventor 汪兴海吕晓峰马羚周立军曹彪张磊曲晓燕陈佳琪
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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