基于433M无线扩频技术在密闭空间的应用  

Application of Wireless Spread Spectrum Technology Based on 433M in Confined Space

作　　者：李文峰[1] 邱贤玉 苏梦圆 徐友飞 LI Wengfeng , QIU Xianyu ,SU Mengyuan ,XU youfei(College of Communication and Information Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, China)

机构地区：[1]西安科技大学通信与信息工程学院,西安710054

出　　处：《电子器件》2017年第6期1571-1574,共4页Chinese Journal of Electron Devices

基　　金：国家重点研发计划项目(2017YFC0703204);陕西省科技统筹创新工程计划项目(2015KTCQ03-10)

摘　　要：针对密闭空间实时数据采集困难和信道利用率低的问题,提出一种基于433M无线扩频通信技术,将其运用于远程数据的通信。该设计采用STM8S103为主控芯片,用于对外设信号的调制解调,其数据传输率可达500 kbit/s。无线收发模块对采集的实时数据进行433M扩频处理并发送至外部信号接收器,实现数据的传输。实验结果表明:当信号的最大发射功率为-132 dBm时,功率损耗最低为100 mW,密闭空间与外界通信距离达到2 000 m,可以满足通信的指标。该技术具有良好的应用前景。A new method of applying 433M wireless spread-spectrum communication technology has been put forward to telecommunication data transmission to solve the problems of real-time data acquisition and low channel utilization in confined space. It adopts STM8S103 as main control chip to modem peripheral signal and realizes 500 kbit/s transfer rate. Wireless transceiver module processes real-time data into 433M spread-spectrum and sends them to the external signal receiver to achieve data transmission. The experimental result shows that when the maximum transmitting power reaches -132 dBm,power consumption will decrease to 100 mW as minimum and the communication distance between confined space and outside can be up to 2 000 meters. It can meet data-indexes of communication. So this technology has a good prospect.

关 键 词：无线扩频通信 调制解调 接收灵敏度 密闭空间 433M 

分 类 号：TN770[电子电信—电路与系统]