摘要
目的:设计一种低功耗物联网Wi-Fi接入方案,便于传感器网络接入互联网。方法:采用低功耗ARM作为主控芯片,驱动Marvell 88W8686网卡芯片,并移植LWIP(轻量型TCP/IP)协议,共同实现Wi-Fi网络的加网、建立TCP连接、发送数据等一系列工作。结果:经测试,本系统可快速连接Wi-Fi网络,最大发送电流在170 mA以内,灵敏度为-85 dBm。结论:该系统具有功耗低、速度快、支持多协议等优点,非常适合应用于物联网网关以及传感器节点的设计方案中,具有广阔的发展空间。
Objective To design a low-power Wi-Fi access solution with internet of things to connect sensors network to Internet. Methods Low-power ARM main controller, Marvel188W8686 network chip and light TCP/IP were involved in the solution for Wi-Fi access, establishing TCP connection, data sending and etc. ~ Wi-Fi network could be accessed to Internet rapidly, with the maximum current not more than 170 mA and sensitivity of -85 dBm. C.onchmion The solution results in low-power, high-speed and multi-protocol-compatible Wi-Fi access, and thus is worth applying to internet of things gateway and sensor node.
出处
《医疗卫生装备》
CAS
2014年第3期52-55,共4页
Chinese Medical Equipment Journal
基金
解放军总医院临床科研扶持基金(2012FC-ZHCG-005)
