一种抗干扰时间闸门电路的设计

An Antijamming Time Gating Circuit

针对内插法计数器中存在的寄生脉冲，设计了一种特殊的滞回比较器，这种电路不仅有效地抑制了寄生脉冲干扰，而且可对双阈值带来的时间扩展误差进行补偿，该电路用于脉冲式激光测距，可使距离分辨精度达到±5mm．

It is aimed at the spurious pulses in the interpolator that a special hysteresis com parater is designed in this paper.this circuit can not ouly restrain the interference of the spurious pulses effectively, but also compensate the time expansion or with double threshold.The circuit is applied to zanging with imulse laser,and it can make the resolution of distance reach ±5mm.