吉林大学学报（信息科学版）2011，Vol.29Issue(4)：376-382,7.
多功能数字频率计的设计与研究
Design and Research of Multifunctional Digital Frequency-Counter
凌振宝 1叶剑峰 2孙正光3
作者信息
- 1. 吉林大学仪器科学与电气工程学院
- 2. 地球信息探测仪器教育部重点实验室,长春130026
- 3. 吉林大学仪器科学与电气工程学院,长春130026
- 折叠
摘要
Abstract
To achieve the purpose of precision measuring signal frequency, we design a simple multi-function digital frequency meter with the fuction of measuring signal frequency, cycle, pulse width and duty ratio, using STC89C52 single-chip computer as the core controller, triode 3DG120, 74HC14 chip and 74HC4040 chip as the signal processing circuit, and present the unit module circuit and matching software. We put forward some anti-interference measures for the small-signal measurement. Experiments show that the system has achieved the design object, including its frequency measurement range for 1 ~ 50 MHz. The measuring error is less than 0. 1 % and the measuring small signal amplitude can be lower than 0. 5 mV. It meets the testing requirements.关键词
频率计/多参数测量/多功能/单片机/小信号Key words
frequency counter/ multiparameter measurement/ multifunction/ single-chip computer/ small-signal分类
信息技术与安全科学引用本文复制引用
凌振宝,叶剑峰,孙正光..多功能数字频率计的设计与研究[J].吉林大学学报（信息科学版）,2011,29(4):376-382,7.
