自动分频法宽量程频率测量技术及实现  

Wide range frequency measurement technique and its realization based on automatic frequency divider

作　　者：朱雪枝[1] 王学伟[1] 

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2004年第1期91-94,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：教育部高等骨干教师资助计划 (10 87)

摘　　要：文中介绍了一种自动宽量程频率测量技术 ,根据被测信号频率的大小自动调整分频电路的分频因子 ,以适当地放大被测信号的周期 ,实现 4 0Hz～ 10kHz范围的频率测量要求。文中首先论述了测量电路的原理和分频因子的最佳选取 ,接着论述了软硬件实现方案 ,该方案实现简单 ,测量准确度高 ,成本低且具有实用性。A technique for an automatic wide range frequency measurement was introduced. The technique is that the frequency factor of the divider is adjusted automatically according to the signal frequency, to magnify properly the signal period, and realize the frequency measurement on the range of 40、Hz～10、kHz. The principle of measurement circuit and frequency factor's optimum choice were discussed and the realization of software and hardware was proposed. The technique is very precise and practical with low cost.

关 键 词：频率测量 自动分频法 单片机 

分 类 号：TM930.1[电气工程—电力电子与电力传动]