Portable FPGA (Field Programmable Gate Array)-based rapid detection device of circuit board defects

Abstract

The invention discloses a portable FPGA (Field Programmable Gate Array)-based rapid detection device of circuit board defects. The portable FPGA-based rapid detection device comprises an FPGA controller, a resolution rate processor, a CMOS (Complementary Metal Oxide Semiconductor Transistor) imaging unit, a data storage unit, a display screen and a dial switch; the FPGA controller is respectivelyconnected with the CMOS imaging unit, the resolution rate processor, the data storage unit, the display screen and the dial switch; and the FPGA controller realizes parallel detection of a standard circuit board and a tested circuit board by means of Verilog HDL (Hardware Description Language) and obtains a detection result by adoption a mode identification manner. The portable FPGA-based rapid detection device disclosed by the invention can be used for detecting defects, such as welding spot defect, insufficient soldering of elements and components, wrong components, welding reversal of polarities of elements and components, IC (Integrated Circuit) chip reversal on the circuit board.

Description

technical field [0001] The present invention relates to a kind of fast detection device of circuit board defect, more specifically, refers to a kind of fast detection device used for circuit board defect with FPGA processor and high-speed multi-resolution image acquisition unit as the core. Data parallelization and pipeline technology parallelize the defect detection algorithm, realizing non-contact fast and non-destructive detection of circuit board defects. Background technique [0002] With the improvement of the production level of electronic products, people's demand for miniaturization of electronic products is also increasing. Along with people's demand for the miniaturization of electronic products, the design requirements of circuit boards are gradually becoming more high-precision, ultra-fine and multi-layered. During the soldering process of the circuit board, there may be problems such as missing solder joints, reversed polarity soldering, and wrong parts, which...

AI Technical Summary

Problems solved by technology

[0005] (1) The defect detection algorithm is implemented on a PC and the test results are displayed. The operation of the PC inevitably has disadvantages such as high cost, large size and poor portability

[0006] (2) Since the circuit board defect detection algorithm has the characteristics of complex algorithm and high computational complexity, it is the bottleneck restricting the speed of circuit board defect detection, and the PC can only use serial processing to realize the defect detection algorithm, so the real-time performance of the algorithm poor

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