Method and system for detecting circuit board pollution

A detection method and circuit board technology, applied in the direction of instruments, material resistance, alarms, etc., can solve the problems of randomness and subjectivity, poor accuracy of circuit board pollution, etc., to save maintenance costs and improve operation reliability sexual effect

Inactive Publication Date: 2008-07-23
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

[0008] Embodiments of the present invention provide a circuit board pollution detection method and system to solve the poor accuracy of judging the degree of contamination of the circuit board caused by the arbitrariness and subjectivity in judging the degree of contamination of the circuit board in the prior art The problem

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  • Method and system for detecting circuit board pollution
  • Method and system for detecting circuit board pollution
  • Method and system for detecting circuit board pollution

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Embodiment Construction

[0024] Before specifically introducing the circuit board pollution detection and alarm method and system of the present invention, some factors that will affect the judgment are introduced:

[0025] In fact, when judging whether it is necessary to clean, we should not only rely on the dust of the equipment to pollute the appearance, but also judge the chemical composition and humidity of the substances in the dust, as follows:

[0026] 1. When the chemical composition of the dust is mainly neutral and insoluble in water, and the humidity in the area is relatively low, even if there is a high accumulation on the circuit board, it will generally not cause equipment corrosion and cause failure, that is In this case, the frequency of cleaning should be low, and cleaning is only required when the thickness of the dust is so large that it may affect the heat dissipation of the heat-generating device.

[0027] 2. When the chemical composition of the dust contains a large amount of ha...

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Abstract

The invention relates to a communication device, in particular to a communication device safety check technique, which discloses a circuit board pollution check method and a relative system, for resolving the problem of prior art which is lack of quantitative check method to judge the pollution degree of circuit board to cause low accuracy. The inventive method comprises checking the surface insulated resistance value of an object circuit board, comparing the surface insulated resistance value with one resistance threshold value, while the environment relative humidity is set as humidity threshold value, judging the resistance threshold value is the minimum surface insulated resistance value higher than the value at the safe operation of the circuit board, and when the surface insulated resistance value is not higher than the resistance threshold value, judging the circuit board has surface pollution. The inventive system comprises an insulated resistance check circuit and a first comparison circuit.

Description

technical field [0001] The invention relates to communication equipment, in particular to the detection technology of communication equipment, and discloses a circuit board pollution detection method and system. Background technique [0002] Due to the serious air pollution in recent years, there is a lot of dust in the air, coupled with the limitation of the environmental conditions of the communication equipment room, the operation of the equipment air supply system, the renovation and decoration of the machine room, etc., the precision electronic equipment under long-term continuous operation will be in the air. A certain amount of dust is covered within a certain period of time. When the dust accumulates to a certain extent, it will have a negative impact on the reliable operation of the equipment. [0003] In addition, in order to reduce manufacturing costs and operating costs in recent years, many equipment suppliers have launched unsealed outdoor communication equipme...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04G01N27/20G08B21/00
Inventor 陈普养徐焰
Owner HUAWEI TECH CO LTD
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