基于FPGA的激光探测自适应电路设计

摘要

Laser’s application is becoming increasingly wide due to its advantages like fine directivity, high brightness and good color. However it is seriously impacted by environment conditions, especially during the dust, snow, fog haze, laser detection’s performance is largely interfered. In the view of this issue, this paper design an adaptive laser detection circuit based on FPGA. It is indicated that with the change of the sensor signal input, the corresponding threshold changes accordingly, which makes differ-ent threshold value’s inhibiting ability on noise achieves the best, so as to come to self-regulation and dynamic equilibrium effect.%激光以其方向性好、亮度高、单色性好等优点使得其应用越来越广泛，但是，因其受环境条件的影响较大，特别是在沙尘、雨雪、雾霾等不同天气情况下，激光探测性能受到很大干扰，该文针对这种状况，基于 FPGA 设计了激光探测自适应电路，表明随着传感信号输入的变化，则相应的阈值门限也随之变化，使得不同阈值对噪声的抑制能力达到最佳，从而达到一个自动调节、动态平衡的效果。