基于PIC16F的高精度涂层测厚仪的设计与实现

t present, the coating thickness gauge on the market generally has low precision and accuracy, and the adaptability to the environment is poor. Aiming at this problem, this paper presents a new method of measuring thickness gauge with high accuracy. The principle of eddy current and magnetic induction is adopted, and the change of distance is more accurate. An adaptive method is added to the function, which improves the coating thickness of environmental adaptability, especially can effectively avoid the measurement error caused by the change of temperature, and reduce cost.At the same time using the calibration manual calibration of linear interpolation can improve the measurement accuracy. When the thickness measuring instrument is in error, the measuring state can be returned to the most standard through the manual calibration, and the reliability is increased.