具有智能监控功能的多通道声频功放系统设计  

Design of multi-channel audio power amplifier system with intelligent monitoring function

作　　者：周静雷[1] 张健 王鸿姗 王亚磊 Zhou Jinglei;Zhang Jian;Wang Hongshan;Wang Yalei(Electronic Information Institute, Xi＇ an Polytechnic University, Xi＇an 710048, China)

机构地区：[1]西安工程大学电子信息学院

出　　处：《国外电子测量技术》2018年第4期78-82,共5页Foreign Electronic Measurement Technology

基　　金：陕西省教育厅专项科研项目(11JK0548)资助

摘　　要：提出一种基于LM4780的多通道功放系统设计方案,适用于声频测量的功率放大环节。该方案采用STM32作为监控模块处理器,能够监测系统供电电压、功放输入输出信号电平以及散热器温度,并进行相应的报警显示和控制;PC作为上位机,基于C＋＋builder的上位机监控软件可以根据测试需要通过USB通信方式向下位机发送指令,可以发送控制指令或查询信息,并显示查询结果。实际运行结果表明,系统能够对各类工作参数实现精确的监控,并且具有运行稳定、操作方便等优点。A design scheme of multi-channel power amplifier system based on LM4780 is proposed,which is suitable for power amplification of audio frequency measurement.The scheme uses STM32 as the monitoring module processor,which can monitor the system power supply voltage,the power amplifier input and output signal level and the radiator temperature,and the corresponding alarm display and control;PC is used as upper computer,and the upper computer monitoring software based on C＋＋builder sends instructions to the lower computer through USB communication mode according to the need,which can send control commands or query information,and display the query results.The actual operation results show that the system can monitor all kinds of work parameters accurately,and has the advantages of stable operation and easy operation.

关 键 词：USB通信 监控 A/D采集 功放 STM32 C++BUILDER 

分 类 号：TN912.2[电子电信—通信与信息系统]