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介绍了一种用硬件、软件相结合的新型光子数字相关仪(DPC)。它既具有硬件相关仪速度快,又具有软件相关仪易于实现的优点,因而有良好的性能价格比。方案采用了快速进位计数电路和缓冲器暂存计数器内容的方法,使电路实现了对光脉冲信号的连续正确的采集。由于在电路中选用了国际上较为先进的MCS—51单片机,采用双CPU并行操作的工作方式,大大地提高了数据处理速度。
A new type of photon digital correlator (DPC) is introduced by hardware and software. It not only has hardware-related instrument speed, but also has the advantages of software-related instrument easy to achieve, which has a good cost performance. The program adopts the method that the fast carry counting circuit and the buffer temporarily store the contents of the counter, so that the circuit realizes the continuous correct acquisition of the optical pulse signal. As the selection of the circuit in the more advanced international MCS-51 microcontroller, the use of dual-CPU parallel operation of the work, greatly improving the data processing speed.