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Circuit board netlist fast extraction method

An extraction method and technology for circuit boards, which are used in electronic circuit testing, measurement of electricity, and measurement of electrical variables, etc., can solve problems such as equipment that has not been used yet, circuit board netlist information extraction, etc., to shorten the extraction time and improve the degree of automation. Effect

Active Publication Date: 2016-12-07
国营芜湖机械厂
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AI Technical Summary

Problems solved by technology

At present, the flying probe online tester is mainly used in the detection of circuit boards. On the premise of importing the netlist information of the tested board, the tested board is tested in the form of verification netlist, but this equipment has not been applied to the circuit board. Extraction of netlist information

Method used

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  • Circuit board netlist fast extraction method

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Embodiment Construction

[0021] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0022] Such as figure 1 As shown, a method for quickly extracting a circuit board netlist includes the following steps:

[0023] (1) Coating removal: Use a sand blower to remove the conformal paint on the surface of the circuit board; if there is a BGA package device installed on the circuit board, the BGA package device needs to be removed and placed on the pad of the BGA package device Tin plating;

[0024] (2) Determine the test point: fix the tested board on the test area guide rail of the flying probe online tester, use the camera fixed on the moving probe on the front and back of the flying probe online tester to take pictures of the actual circuit board under test, Obtain the front and back image information of the tested circuit board;

[0025] (3) Set the test point label: n...

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Abstract

The invention relates to a circuit board netlist information fast extraction method. The method comprises the steps that 1 test points on a tested circuit board are determined, and test point labels and coordinate information are acquired; 2 a network node analysis method is used to roughly divided all test points on the tested circuit board into multiple networks; 3 connectivity test is carried out on each network inner test point; and 4 the netlist information of the tested circuit board is extracted according to the test point labels. According to the invention, the connection relation information of the circuit board is extracted by contacting surface solder joints of the circuit board; and the tested circuit board is prevented from being damaged; after a netlist information extraction program is written, a fly-on-line tester can automatically complete the network division of the test points and the connectivity test of networks; the automation degree is high; and deficiencies in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of robot power systems, in particular to a method for quickly extracting circuit board netlists. Background technique [0002] The airborne circuit board is the main component of various onboard electronic products, and its performance affects the quality of electronic products. Circuit board netlist information is an important basis for circuit board maintenance. Due to restrictions such as property rights protection, some circuit board netlist information is missing, which hinders the protection of electronic products on board. At present, "copy board software" is the main implementation method in the field of circuit board netlist extraction. [0003] The netlist extraction method of "copy board software" is: with the assistance of "copy board" software, process the circuit board wiring image through image processing technology, and then use the circuit board as a reference to extract the circuit board n...

Claims

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Application Information

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IPC IPC(8): G01R31/28
CPCG01R31/2812G01R31/2815
Inventor 李珊珊唐起源胡猛
Owner 国营芜湖机械厂
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