一种低功耗的多模式散射通信系统研究

A Low Power Multimode Scattering Communication System

随着社会信息化程度的提高,物联网技术的发展和应用将会越来越广泛,尤其是能够兼容多种无线通信模式的物联网终端。本文基于后向散射原理,提出一种低功耗的多模式散射通信系统,系统以MCU为核心处理器,兼容Wi-Fi、LoRa等多种通信模式。系统功耗极低,进行一次LoRa散射通信所消耗的电量为9.2μA•s,进行一次Wi-Fi散射通信所消耗的电量仅为2.5uA•s。设置系统每分钟发送2包Wi-Fi数据,1包LoRa数据,一个容量40mAh的CR1220纽扣电池可供系统工作4年以上,具有成本低、功耗低、应用范围广等优点。

With the improvement of social informatization,the development and application of internet of things technology will be more and more extensive,especially the internet of things terminals which can be compatible with various wireless communication modes.Based on backscattering principle,a low power multi-mode scattering communication system is proposed in this paper.The system uses MCU as the core processor and is compatible with Wi-Fi,LoRa and other communication modes.The power consumption of the system is very low.The power consumption of a LoRa scattering communication is 9.2μA•s,and that of a Wi-Fi scattering communication is only 2.5uA•s The system can send 2 packets of Wi-Fi data and 1 packet of LoRa data per minute.A 40mAh CR1220 button battery can work for more than four years.It has the advantages of low cost,low power consumption and wide application range.