电涡流技术是在线测量钢板厚度的有效方法 ,针对测量原理和方法分析了传感器品质因数受线圈温度影响和被测钢板表面温度变化的影响 ,提出了克服温度影响的方法 ,以提高了测量精度 The eddy current technique is an effective method for on-line measurement of the thickness of the steel sheet. According to the measurement principle and method, the influence of the temperature factor on the quality factor of the steel sheet by the coil temperature and the change of the surface temperature of the steel sheet is analyzed. A method to overcome the influence of the temperature is proposed to improve the measurement accuracy