光电靶抗干扰性能的优化设计

火光或环境光会使光电靶产生误触发信号或是不能捕捉住弹丸的过靶信号,影响测试的准确度和灵敏度.提出光电靶的总体设计方案,激光器功率的选择的推导过程以及光电补偿电路设计.实验采用650nm波长的PIN光电二极管发出激光形成大面积光幕,经过遮光罩、干涉滤光片等光学器件和特殊的光电转换电路组成的光电靶测速系统测试弹丸的创伤性.在实验室对新型的光电靶系统用投掷实物进行模拟仿真,最后通过实弹测试结果表明采用抗干扰措施组成的光电靶测速系统能有效地抑制环境光和火光的干扰.

The Optimization Design of Photoelectric Target Anti-jamming

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. It brings forward the overall design of the photoelectric velocity measurement system, the selection of laser diode power, and the design of the photo compensation circuit. Using the wavelength of 650nm PIN photodiode to form the large effective screen area,laser screen velocity measurement system comprised of lens hood, interference filter and special photoelectric conversion circuit measure execution of projectile. Then analyze the measurement system by simulation in laboratory. At the end, it is proved the usability of the suppression of ambient light and flames interference through the ball firing.