At present,frequency measurement is mostly realized by FPGA circuit,which is easy to realize and widely used.However,in the face of high-precision frequency measurement requirements,the resource occupancy rate will be significantly increased,which will affect the accuracy and stability of frequency measurement.Therefore,this pa-per proposes a high precision frequency measurement scheme based on ZYNQ,which combines equal precision fre-quency measurement method with Time-to-Digital Convertor(TDC)technology.The hardware design is based on ZYNQ_7000 chip,and the whole system and data processing are controlled by PS-end ARM.Pl-end FPGA cir-cuit realizes frequency calculation and compensation.The experiment shows that the accuracy of the system is obvi-ously improved and the absolute error is reduced.
关键词
频率测量/TDC/ZYNQ_7000/数据传输
Key words
frequency measurement/TDC/ZYNQ_7000/data transmission
维普
万方数据