利用反射式光纤位移传感器的工作原理，通过对反射光强信号的检测，提出了一种用于轧辊磨损度在线非接触检测的光电检测法，并重点设计了用于反射式光纤位移法检测轧辊磨损度系统的实用电路。根据轧辊磨损度测量过程的特点及精度要求，阐述和分析了传感器电路系统的原理、组成及性能。理论和实验研究表明，该电路系统工作稳定，精确度和灵敏度均可满足实际要求。此电路系统稍加改进还可适用于类似条件下用反射式光纤位移法进行测量的其他系统。

Based on the principle of reflective fiberoptic sensor, a method of online noncontact testing for roller abradability is proposed. The measurement of the reflective light intensity is utilized in the method. Also a practical circuit for reflective fiber displacement sensor in testing roller abradability is introduced emphatically. According to the characteristic and the accuracy requirement of the testing course for the roller abradability, the principle, the construction and the function of the sensor circuit are elaborated and analyzed. The theories and experiments show that the proposed circuit system is stable, both the accuracy and the sensitivity can meet the demand of the actual application. And the circuit also suits for other testing systems, in which the reflective fiber displacement transducers are used under the similar condition after a slight modification.