Circuit board electroluminescent detection system and detection method

Abstract

The invention discloses a circuit board electroluminescent detection system comprising a transparent insulating glue layer containing inorganic electroluminescent powder, a transparent conductive coating layer, and an adjustable power supply and control module. The bottom of the transparent conductive coating layer is pasted with the transparent insulating glue layer containing inorganic electroluminescent powder. A grounding end of the adjustable power supply and control module is connected with a signal ground of a detected circuit board, an excitation signal output end of the adjustable power supply and control module is connected with an excitation signal input end of the detected circuit board, and a first power signal output end of the adjustable power supply and control module is connected with a power signal input end of the detected circuit board. The transparent insulating glue layer containing inorganic electroluminescent powder is adhered to the surface of the detected circuit board. A second power signal output end of the adjustable power supply and control module is connected with the transparent conductive coating layer through an electrode. A controlled alternating-current electric field can be formed between the transparent conductive coating layer and the detected circuit board. By adopting the circuit board electroluminescent detection system of the invention, the efficiency of circuit board detection and maintenance is improved.

Description

technical field [0001] The invention relates to the technical field of circuit detection, in particular to a circuit board electroluminescence detection system and detection method. Background technique [0002] Modern electronic equipment is becoming more and more advanced in function, and at the same time, its structure and scale are becoming more and more complex, and testing and maintenance are becoming more and more difficult. Therefore, research on the testability, maintainability and fault diagnosis of electronic equipment is important to ensure that electronic equipment remains It is of great significance to exert high performance and greatly reduce the maintenance and support costs of electronic equipment. [0003] After decades of development, the fault diagnosis of electronic circuits has made great progress, but for circuits with more discrete components and less complexity, the specific target testability method is still used, which mainly uses external testing....

AI Technical Summary

Problems solved by technology

[0008] The control and observation of the internal nodes of the measured object adopts the online test technology of multimeter, oscilloscope or test bed of needles, so the test of complex systems is difficult and the cycle is long. In addition, the cost of special needle beds and test instruments is high, and the test may be damaged components in the circuit

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