Shaft displacement measuring device and method

Abstract

This invention discloses a shaft displacement measuring device, comprising a shaft to be measured mounted on a carrier, an imaging module, and a data analysis module. A color chart is provided on the shaft to be measured. The imaging module acquires image information of the shaft to be measured and the angle of the color lines it aligns with. The data analysis module analyzes the image information to obtain the number of color lines between the initial position of the intersection point of the imaging module on the color chart and its position during measurement. The data analysis module calculates the displacement data of the shaft to be measured based on the color line angle, the number of color lines, and the preset width of the color lines within itself. This invention employs an optical measurement method, is unaffected by complex electromagnetic environments, and has a much longer range than traditional measurement methods. Therefore, this invention has strong anti-interference capabilities and can measure the displacement of supercritical shafts and high-speed rotating shafts.

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