Abstract: Based on analysis of the advantages and the disadvantages of the  previous electronic police system,an improved front-end system scheme is proposed.This scheme uses 2 to 4 virtual coils to detect the vehicle  running the red light.In order to improve the detection rate,a portion sample pixels’ changing of each coil  is used as the basis to detect the vehicles which fail to stop at the red light,and this approach is practical.In actual use,the numbers and detecting areas of the virtual coils can be adjusted according to the scene,which can achieve better results.

Key words: electronic police system, video virtual coil, pixel, running the red light, detecting areas