PCBA short circuit point detection method

A detection method and short-circuit point technology, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of low accuracy of detection results, low detection speed, and price difference in efficiency, so as to improve the accuracy of detection and ensure correctness , Improve the effect of detection accuracy

Inactive Publication Date: 2019-12-10
昆山纬亚智能科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a detection method for PCBA short circuit point, which can effectively s

Method used

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  • PCBA short circuit point detection method

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Example Embodiment

[0032] Example 1

[0033] Such as figure 1 The shown detection method of PCBA short circuit point includes the following steps:

[0034] S1. Select a circuit net, divide the circuit net on the PCBA into a first circuit net and a second circuit net, and components are connected in parallel between the first circuit net and the second circuit net;

[0035] S2, set a base point, after step S1 is completed, set a base point at any position on the first circuit network;

[0036] S3. Set the measurement point, set one end of the second circuit network as the first measurement point, and set the other end of the second circuit network as the second measurement point, and set the measurement point between the first measurement point and the second measurement point. Set the third measuring point in the middle position;

[0037] S4. Select measuring instruments. After step S3 is completed, select the relevant instruments required for resistance detection;

[0038] S5. Selection of accessories. ...

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Abstract

The invention discloses a PCBA short-circuit point detection method. The method comprises the following steps: selecting a circuit network, setting a base point, setting a measurement point, selectinga measurement instrument, selecting accessories, measuring resistance, judging resistance, updating the measurement point according to the resistance, comparing the distance between the measurement points, judging a short-circuit region, repeatedly detecting and obtaining a final conclusion. The beneficial effects of the invention are that: a plurality of measurement points are arranged; the fault range can be quickly reduced, thus improving detection efficiency, and the frequency required by detection is reduced; accessory with consistent specification, the consistency of influence factors of accessories can be ensured; the detection method is advantaged in that the same external influence on different areas during detection is guaranteed, detection precision is improved, through settingmultiple times of detection, multiple times of detection results are integrated, detection correctness is guaranteed, detection accuracy is improved, short circuit points do not need to be checked one by one, and printed circuit board short circuit point detection efficiency is improved.

Description

technical field [0001] The invention relates to the field of printed circuit board testing, in particular to a method for detecting a PCBA short circuit point. Background technique [0002] PCBA is the abbreviation of English Printed Circuit Board+Assembly, that is to say, the empty PCB board passes through the SMT upper part, or the whole process of DIP plug-in, referred to as PCBA, and there will be a short circuit caused by some bad materials or poor workmanship during the production process. Phenomenon, if there are a lot of electronic materials on the printed circuit board, the conventional troubleshooting method is often to check all the electronic materials on the short-circuit network one by one. This method is not only inefficient, wastes time, and sometimes even damages the electronic materials. It is time-consuming, so the method of detecting the size of the resistance and then comparing it is usually used to detect the short-circuit point; the traditional detecti...

Claims

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Application Information

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IPC IPC(8): G01R31/02
Inventor 李容刚
Owner 昆山纬亚智能科技有限公司
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