In order to explore a laser mirror system, the mirror driven by a uniform rotating motor can make the reflected laser scan linearly in the scanning plane, and overcome the disadvantage of traditional galvanometer scanning application. A two-dimensional model based on elliptical cylindrical mirror is established. The process of elliptical rotation causing the deflection of the reflected beam is analyzed. The general formulas of elliptical rotation angle and laser scanning point displacement in the polar coordinate system which rotate synchronously with the ellipse are summarized. According to the formula, MATLAB is used to analyze the nonlinear error between the elliptical rotation angle and the displacement of the laser scanning point in the elliptical cylindrical mirror system. A program using iterative algorithm is designed by MATLAB. Under the constraints of the relevant mirror size parameters, laser incident height range and scanning range given by the user, the program can find the mirror system that minimizes the nonlinear error of laser scanning and output its relevant parameters. At the same time, the relevant parameters of the linear equation between the rotation angle of the mirror and the displacement of the laser scanning point are also output. The obtained laser mirror system has ideal effect.
When the circuit board fails, its operating temperature will be abnormal, which will have a greater impact on the overall performance of the circuit. Therefore, it is very important to identify the fault by observing the operating temperature of the circuit board. This paper introduces a fault identification device for the electronic board card based on binocular imaging and analyzes its overall system design, system composition principles and upper computer software design results. The system uses an infrared camera and a visible light camera to simultaneously image the circuit board, and can display its thermal image with contour on the TFT LCD screen or on the upper computer software, and can intelligently identify the fault type on the upper computer. It has the advantages of low cost, small size, clear imaging, and portability, which make up for the disadvantages of current thermal imaging equipment such as high cost, poor portability, and difficulty in fault identification.
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