简易数字频率计的设计与仿真  

Design and Simulation of a Simple Digital Frequency Meter

作　　者：蔡晓艳[1] 李小亮[1] 肜瑶[1] 姬硕 Cai Xiaoyan;Li Xiaoliang;Rong Yao;Ji Shuo(Department of Engineering,Huanghe Science and Technology College,Zhengzhou City,Henan Province 450063)

机构地区：[1]黄河科技学院工学部,河南郑州450063

出　　处：《黄河科技学院学报》2024年第11期74-84,共11页Journal of Huanghe S&T College

基　　金：2019年黄河科技学院教改项目(kg2019xm07);教育部产学合作协同育人项目(230802595213005);中国高等教育学会2022年度高等教育科学研究规划项目(22LK0417)。

摘　　要：简易数字频率计主要由前端采集处理模块、计数控制模块和显示模块组成。输入信号通过可调放大电路放大,有源低通滤波器滤波选频,电压比较器整形后,给计数控制模块计数,进行测频,并通过显示模块显示其测量频率的大小。仿真结果表明:该数字频率计实现了自动测频、自动清零、数据显示和保持功能,具有成本低,性价比高的优势。The simple digital frequency meter is mainly composed of front-end acquisition and processing module,count control module and display module.The input signal is amplified by the adjustable amplifier circuit,the active low pass filter filter selection,the voltage comparator is shaped,the counting control module is counted for frequency measurement,and the size of the measurement frequency is displayed through the display module.The simulation results show that the digital frequency meter realizes the automatic measurement frequency,automatic clearing zero,data display and data-keeping,and has the advantages of low cost and high cost performance.

关 键 词：数字频率计 自动测频 数据显示 低成本 

分 类 号：TN7[电子电信—电路与系统]