The parallel wire fine line control system is mainly used for the adjustment of the distance between the two electrode wires and the parallel control during the fabrication of the miniature thermocouple. It mainly adopts precision electronic control and computer vision precision micro-measurement technology to ensure the adjustment and stability of the two-electrode wire spacing parameters during thermoforming. Hanging 17μm-60μm wire on the device, tightening the suspension wire by controlling the two-phase stepping motor, adjusting the five-phase stepping motor to adjust the parallel wire spacing, collecting the wire image in real time, automatically interpreting the wire spacing parameter by using a fast algorithm, and interpreting the wire The result output is displayed.
In this paper, the radial refractive index change of the grin lens is measured based on the principle of Mach-Zehnder interference. Using an image sensor to obtain experimentally detected images, the computer-derived interference pattern is subjected to grayscale stretching and filtering, and then the center position of the interference ring and the distance between the interference rings are determined to obtain the refraction of the grin lens. The rate changes. Through experiments, the actual samples of different thicknesses were tested, and the measurement accuracy can reach 10<sup>-4</sup>.