基于单片机技术检测中波发射机调制电流的设计与实现  

Design and Implementation of Detecting AM Transmitter’s Modulated Current Based on SCM Technology

作　　者：虞飞江 金世新 Yu Feijiang;Jin Shixin(Zhejiang AM Transmission Management Center,Zhejiang 310005,China)

机构地区：[1]浙江中波发射管理中心,浙江310005

出　　处：《广播与电视技术》2022年第3期96-99,共4页Radio & TV Broadcast Engineering

摘　　要：本文基于STM32F103VCT6单片机为核心,研制了小功率PDM中波发射机调制电流采样监测电路。利用电流变送器原理,将发射机高电压、大电流调制信号转换成小电流信号,经整流滤波转变为电压信号,利用单片机自带A/D模块,进行采集转换后综合处理,实时上传服务器,供智慧中波安播管理系统进行发射机运行状态的即时监管。This paper develops a low-power PDM MW transmitter modulation current sampling monitoring circuit based on SCM(STM32F103VCT6).According to the principle of current transmitter,the circuit transfers PDM transmitter’s high-voltage and big-current modulated signal to small current signal,which is converted into voltage signal through rectification and filtering.A/D module of SCM is used to perform comprehensive processing after acquisition and conversion,and upload the signal to the server in real time.It is used for real-time monitoring of transmitter operating status by intelligent MW broadcast management system.

关 键 词：STM32 电流变送器 调制电流 

分 类 号：G220.7[文化科学]