CAJ | 학술논문

随着频率测量系统在许多领域的广泛应用，为了达到高速高精度宽量程的频率测量，介绍了基于Nios II处理器软核的SOPC为控制核心，采用直接数字频率合成（ DDS）技术，在SOPC上构建通道切换逻辑控制、信号处理器模块以及人机交互模块，实现高速多通道数据运算与处理，缩小了频率仪体积，并降低了开发成本。通过通道切换逻辑控制，实现宽量程频率采样。通过细分插补软件算法实现0．061 ns级的时间测量，从而实现高精度的频率测量。
수착빈솔측량계통재허다영역적엄범응용，위료체도고속고정도관량정적빈솔측량，개소료기우Nios II처리기연핵적SOPC위공제핵심，채용직접수자빈솔합성（ DDS）기술，재SOPC상구건통도절환라집공제、신호처리기모괴이급인궤교호모괴，실현고속다통도수거운산여처리，축소료빈솔의체적，병강저료개발성본。통과통도절환라집공제，실현관량정빈솔채양。통과세분삽보연건산법실현0．061 ns급적시간측량，종이실현고정도적빈솔측량。
With the widely application of the frequency measurement system in many areas,in order to achieve high speed and high precision wide-range frequency measurement,the SOPC control core based on Nios II soft core processor was introduced.The direct data frequency synthesis technology was used.The channel switching logic control,signal processor module and human-com-puter interaction module were built on SOPC.The high speed multi-channel data operation and processing were realized.It reduced the volume and the cost of frequency meter.Wide-range frequency sampling was realized by multi-channel switch logic control. Time measurement can be realized at 0.061 nanoseconds through software interpolation subdivision algorithm,thus high precision of frequency measurement was realized.