Method and system for estimating circuit board corrosion risk

A circuit board and risk technology, applied in the direction of printed circuit, printed circuit, circuit device, etc., can solve the problem of high complexity of circuit board pollution test, and achieve easy field application, maintain reliable operation, good testability and accuracy sexual effect
CN101038263AInactive Publication Date: 2007-09-19HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2007-09-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to the testing technology field of electronic equipments, especially to a method and system used for assessing circuit boards corrosion risks. According to the method, the surface insulation resistance values of circuit boards are measured and are compared with the corrosion risks discrimination mapping of the circuit boards to get the corrosion risk levels of circuit boards. The present invention also provides a system used for quickly on-site assessing the circuit boards corrosion risks, which comprises a circuit board, a testing module and a discrimination module, wherein the testing module is used for measuring the surface insulation resistance value of the circuit board and sending the measured value to the discrimination module, the discrimination module is used for comparing the surface insulation resistance value measured with the corrosion risks discrimination mapping to get the corrosion risk level of the circuit board. By using surface insulation resistance values easily got on-site to indicate the circuit boards corrosion risks, the present invention is capable of quickly on-site assessing the corrosion risk of a circuit of a board, and then exhibits excellent effect about adopting some protection measures of the circuit board in time.
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Description

technical field

[0001] The invention relates to the technical field of testing electronic equipment, in particular to a method and system for evaluating the corrosion risk of a circuit board. Background technique

[0002] The surface of the circuit board and its components will be polluted during the manufacturing process, and the surface will also be polluted due to the deposition of dust in the use environment. Under the action of these comprehensive factors such as ion pollution and moisture, the wiring on the surface of the circuit board, the device body, and the solder joints may all be corroded, eventually causing the single board of the circuit board to be corroded and fail. How to predict the corrosion risk of circuit boards in combination with actual environmental factors has always been a difficult problem in the industry.

[0003] The degree of ionic contamination can be used to quantify the degree of contamination of the test panel surface by inorganic ions. Wh...

Claims

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