Grating Numeric Displacement Sensor Teaching Design

Grating numeric displacement sensor makes a great effect in understanding the basic principle of sensor,testing technique course and application of photoelectric sensor for students.This paper makes teaching design project of grating numeric displacement sensor base on elicitation mode,and analyzes implement methods of each tache in teaching.At last the effect of this teching design mode and the use for reference meaning to else knowledge teaching of subject are summarized.