锁相倍频电路在电压信号DSP数据采集中的应用  

Application of Phase Locked Frequency Multiplier Circuit in the Voltage Signal DSP Data Acquisition

作　　者：张旭[1] 黄细霞[1] 孔祥品[1] 代小磊[1] 

机构地区：[1]上海海事大学科学研究院,上海201306

出　　处：《电源学报》2012年第5期32-36,共5页Journal of Power Supply

基　　金：上海市科委创新行动计划项目(09170501900);上海海事大学科研基金项目(20120085)

摘　　要：介绍了锁相环集成电路CD4046的工作原理,提出了一种硬件同步的锁相倍频采样测量方法,用锁相环产生的频率来同步DSP2812的A/D采样的频率和时刻,锁相环每发出一个脉冲都启动采样电路进行一次数据采集。实验结果表明系统可行性和有效性。The working principle of phase locked loop integrated circuit CD4046 was introduced, putting forward a kind of hardware synchronization phase-locked frequency multiplication sampling measurement method, which could use the frequency generating by the phase locked loop to synchronize the DSP2812A/D sampling frequency and time. The phase locked loops would start sampling circuit in a data collection while each emitting a pulse. The experimental results show that the system is feasible and effective.

关 键 词：CD4046 锁相环 采样电路 

分 类 号：TM930.2[电气工程—电力电子与电力传动]