基于双单片机的线阵CCD驱动及信号处理系统

针对线阵CCD器件的驱动和信号处理,使用了2片STC11F02单片机,一片产生CCD驱动时序信号,另一片负责测量控制及与上位机进行通信。采用硬件的方法对CCD输出信号进行处理,直接得到光斑中心位置,不需要进行A/D转换。试验结果说明测量精度可达0.007 mm。该电路成本低,体积小,速度快,可广泛应用于基于线阵CCD的非接触式几何量测量。

Linear array CCD drive and signal processing system based on double-SCM

Two STC11F02 chips are used for the driving and signal processing of linear array CCD device. One generates CCD drive time-sequence signal,and another is responsible for measurement control and communication with the host computer. The CCD output signal is processed with the hardware method to directly obtain the center position of the light spot without A/D conversion. Experimental results show that the measurement precision can reach 0.007 mm. The circuit has the characteristics of low cost,small size,high speed,and can be widely used for non-contact geometry measurement based on linear array CCD.