| With the rapid development of wireless communication technology, sensor technology,embedded technology, the wireless sensor network technology has matured. It is applied tovarious fields of industry, agriculture, transport, transportation, home and other, has becomeone of the hot spots of global concern.This paper was designed and implemented a WIFI-based wireless sensor networks，itcan enjoy the mature WIFI network technology and a variety of WIFI devices. And it can veryeasily with existing networks for seamless connection. Set up sensor networks is veryconvenient and reduces the cost in the area of deployment of the WIFI network. In powerconsumption，System through the sleep - wake-up way of working greatly reduce the powerconsumption of the system. Therefore, this paper selected WIFI as a communicationtechnology for wireless sensor networks.This paper first introduces the development situation and prospects of wireless sensornetworks and several short-range wireless communication technologies are compared.According to the current wireless sensor network faults, put forward a wireless sensornetwork based on the WIFI. By studying the WIFI network technology, design the overallstructure of wireless sensor networks. Given the detailed introduction of the hardwarestructure of WIFI wireless sensor network node and wireless AP. Transplant embedded Linuxoperating system in an ARM-based wireless sensor network node, and design Linux USBdriver in FT245. By transplanting WIFI wireless network card driver, implement wirelesscommunications. In this paper, detailed introduces the socket communication technology, anddesign Wireless sensor network client and server software program. Aiming at the twoperformance parameters of the wireless transmission distance and wireless transmission ratedo a lot of experiments, experimental results concluded that the entire WIFI wireless sensornetwork is working, stable and the transmission rate meet the application requirements in therange of 110 meters. |
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