APD光信号放大电路，相当有价值的电路图-APD optical signal amplification circuit, the circuit very valuable

本文设计的数据采集系统, 采用功能丰富的 MSP430F449 作为控制器, 采用AD7714 作APD 转换 模块, 使硬件电路结构简单, 受外界干扰小, 消耗 功耗低, 实时性较好, 更适合外界仪表的应用。-A high precision data sampling mini system based on MSP430F449 is researched. The system is established by hard ware construct2 ing and

激光测距，采用APD作为光电传感器接收反射激光，TDC-GP22进行时间测量，通过速度时间精确计算出距离(Laser ranging uses APD as photoelectric sensor to receive reflected laser, TDC-GP22 carries out time measurement, and calculates the distance by velocity and time accurately.)