Design and improvement of photoelectric target

In order to measure the velocity of bullets,a photoelectric target design methods is put forwarded.When the photoelectric target work,firelight or ambient light will bring an error trigger signal or can not capture the shot off target signal.These may affect accuracy and sensitivity of the system.The basic principle of the photoelectric target was described,using the large effective screen area technology and design of the photo compensation circuit.It can get rid of the signal that caused by ambient light interference.Experiments were performed to validate the correctness of the design.At the end,it is proved the validity and the usability of the system through the ball firing.As a result,the system of photoelectric target could resolve the effect of ambient light interference.