The design of the laser simulation training device

This shooting device is composed of three parts---laser gun, receiver and the soniferous display. The laser gun, driven by square wave, can produce a light source of 2KHz modulation frequency. And the receiving end includes silicon photovoltaic cells, pre-amplification and frequency-selective filter circuit. As for the soniferous display, a single-chip machine controls the ISD1420 voice chip and the nixietube, which manages to show the result both in light and voice. The application of Second-step voltage-controlled high-pass filter circuit by which the interference light is filtered out, improves the anti-interference ability significantly. And the increasing of laser power will make the light intensity on the effective area increase. Thus, the shooting distance can correspondingly, rise to 20-100 meters instead of the common devices' 3-5 meters.