基于ADuC7128微处理器的宽频带相位测量系统的设计

摘要

A aimed at the problem of broadband signal phase measuring is hard to accomplish.According to theory of signal transformation, a method is introduced to accomplish broadband phase measuring by the principle of frequency conversion.In the part Of hardware design,the microprocessor of ADuC7128 is selected as the control core, combined with frequency control circuit and trigger-comparative circuit, accomplish to phase measuring, which input signal band within 0 Hz ～ 10 MHz.At last, it ' s validated by experiment that the system works steadily and reliably, and achieves the desired results.%针对宽频信号相位测量难以实现的问题,依据信号变换理论,提出了一种利用差频变换原理实现宽频带相位测量的方法.在硬件方面.此系统选用ADuC7128微处理器作为控制核心,结合频率控制与触发比较电路,实现了对输入信号在0～10 MHz范围内的相位测量.最后,通过试验得出了结论,该系统工作稳定、性能可靠,设计达到了预期效果.