摘要
为可靠检测移频信号,文章设计出利用STC系列单片机控制MAX260滤波的移频信号检测系统,对移频信号进行窄带滤波,实现对铁路移频信号的自动识别和自动检测。通过实际铁路移频信号的测试,证明该系统是有效的,移频信号的载频检测与调制频率检测误差都比较低,具有系统简单、可靠性高的优点。
In order to reliably detect the frequency-shift signal ,this article designed the frequency-shift signal detection system which uses STC series single-chip microcomputer to control the MAX260 filter, with narrow-band filtering for frequency-shift signal, and realized the automatic recognition and automatic detection of railway frequency shift signal.This system was proved effective through the test of actual frequency shift signal of the railway, and the carrier frequency detection and the modulation frequency detection error of frequency shift signal were all relatively low,which has the advantages of simple system and high reliability.
出处
《西部交通科技》
2017年第2期72-74,79,共4页
Western China Communications Science & Technology
基金
广西自然科学基金项目(编号2013YB357)
关键词
铁路
STC
单片机
MAX260
移频信号
检测系统
Railway
STC
Single-chip microcomputer
MAX260
Frequency shift signal
Detection system