To solve the problem that the robot can not quickly identify continuously changing dynamic objects and accurately find the center position of the image, a device is designed to train special robot image recognition, monitor shooting accuracy and report target in real time. First, output and replace the image with the Mini PC. Next, pressure sensor output signal polluted by additive noise are processed by mixed filter with polynomial prediction filter of finite impulse response and the improved median filter. Then, the STM32 determines the location of the hit by identifying the de-noised and amplified signals. Finally, the hit data is displayed by digital tube. The experimental results show that the device has high sensitivity and accuracy.