Research On Photoelectric Measurement Method For Filament Diameter Based On Fpga

Microfabrication technology places very high demands on the accurate measurement of filament diameters. The application of non-contact photoelectric measurement methods based on FPGA to the measurement of filament diameter is very significant for obtaining the diameter of the filament to be measured quickly and accurately to improve the quality and production efficiency of the filament. In this paper, the advantages and disadvantages of the laser scanning method and the diffraction method are firstly compared and analyzed. Based on this, a high-precision measurement method of filament diameter based on laser scanning and FPGA signal processing technology is proposed. Then, the system's working principle, configuration of the hardware, and the algorithm of the signal processing based on FPGA were discussed. The factors affecting the accuracy of the measuring system are also analyzed and the corresponding solutions are given. At the same time, a program based on MATLAB GUI was also designed for the measurement results can be further processed and displayed in the host computer.