Research Of Reading Target System In Laser Shoot

With the wide applications of laser technology in military training. It's more and more important to develop laser simulated shooting system to raise soldier's shooting level, and reduce the defense expenditures, at the same time. It also has practical significance to achieve modernization of national defense and intellectualization of military training. Based upon analysis of the existed laser simulated shooting system, according to the issues existed in target system. This paper puts forward a new design method through refining and improving function and structure of existing research results. We have completed the hardware design and software design reference to military needs.Because the existing reading target system of laser simulation shoot with low accuracy. This design uses a PIN four-quadrant photo detector as a receive target laser detector. Instead of the traditional target photo detector which composed of a large number photodiode, not only simple photo detector signal processing, and greatly reduce the cost. Has completed to design the optical structure of launching system and receiving system, to make the laser signal which from launching system can be correct imaged in PIN four-quadrant photo detector. Signal processing circuit of receiving system covert current signal from PIN four-quadrant photo detector to voltage signal. Eventually obtain the voltage signal to reflect the spot center offset in x and y directions.Usb2004 card is the core of data acquisition in this system, using LabVIEW as the software development platform, software of reading target system in laser target has been designed and developed. The data acquisition card drive, signal sample, data process and software programm has been realized. Has completed the ring number calculat, the ring number display in real-time mode and shooting results storage.Based on analysis and process the experimental data, obtained the relationship between spot offset and voltage equivalent. Proposed the instrument improvement comments and methods through analyzing the experiment source of error. And has analyzed the reading target precision, proposed a reasonable system expansion scheme for future work. This system is secure, simple and high precise and includes the following functions: target real-time display and calculation of results and others. Software design based on LabVIEW is featured with simple program, high accuracy and friendly interface.