短距离无线话筒扩音系统  

Short-range wireless microphone amplification system

作　　者：李香宇 张晨亮 毕敬腾 LI Xiangyu;ZHANG Chenliang;BI Jingteng(Aviation Foundation College,Naval Aviation University,Yantai 264001,China)

机构地区：[1]海军航空大学航空基础学院,山东烟台264001

出　　处：《电子设计工程》2021年第14期136-139,144,共5页Electronic Design Engineering

摘　　要：以短距离、小功率、无线通信为目的,采用凌阳公司的SPEC061A单片机作为控制核心,由干扰检测模块、音频发射和接收模块、LCD1602显示模块、键盘等部分组成。系统上电后,首先通过RDA5807模块进行干扰检测,将干扰频率存储到单片机中,之后通过键盘设置合适的载波频率,经QN8027模块发射音频信号,由QN8025模块接收音频信号,实现了单个话筒的扩音和两个话筒的混声。SPEC061A单片机通过I2C总线实现发射和干扰检测模块之间的通信。通过无线话筒的信号发射和接收试验表明,可以实现在88~108 MHz之间任意频率的通信,音质清晰、信号稳定,可有效地发现并规避干扰信号,而且两只无线话筒可同时工作,并实现混声。For the purpose of short distance,low power and wireless communication,the single-chip microcomputer SPEC061 A of Lingyang company as the control core,The system is supplemented by interference detection module,audio transmitting and receiving module,LCD1602 display module,keyboard and other parts.When the system is powered on,firstly,the interference is detected by RDA5807 module,and the interference frequency is stored in the single chip microcomputer.Then,the appropriate carrier frequency is set through the keyboard,and the audio signal is transmitted through the QN8027 module,and the audio signal is received by the QN8025 module.SPEC061 A MCU realizes the communication between transmitter and interference detection module through I2C bus.Through the signal transmitting and receiving test of wireless microphone,we can realize any frequency communication between 88~108 MHz,the sound quality is clear,the signal is stable,and the interference signal can be found and avoided effectively.Moreover,two wireless microphones can work at the same time and realize mixed sound.

关 键 词：SPEC061A单片机 QN8027发射模块 RDA5807干扰检测 QN8025接收模块 无线话筒 

分 类 号：TN92[电子电信—通信与信息系统]