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.
作者
李文峰
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)
出处
《电子器件》
CAS
北大核心
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)
关键词
无线扩频通信
调制解调
接收灵敏度
密闭空间
433M
wireless spread spectrum communication
modulation and demodulation
receiver sensitivity
confined
