High-speed Wireless Sensor Network Node Design Based On ARM

In sensor networks, the reliable access of the date is critical, and also is the basis andprerequisite of the variety signal analysis.In the wireless sensor networks for testing, due tothe characteristics of the measured signal burst mutation, non-reproducible and frequencycomponents, coupled with high signal acquisition and transmission rate, disgusting testenvironment and other factors, making reliable access to the signal to be a major problem. Inresponse to this problem, we designed the high-speed wireless sensor network node based onARM, the node has high signal sampling rate, high speed of data storage, data high transferrate,can get the signal more rapid and accurate,then feedback to the users.It has a veryimportant application value.In this paper, through research at home and abroad wireless sensor networks and itsdevelopment status of the nodes, research in embedded technology, sensor networktechnology and wireless communication technology, according to the functional requirementsof the system, design the high-speed wireless sensor network node based on ARM processor,the node hardware, including ARM processor, data acquisition module, data storage moduleand data transmission module, the software part based on LINUX embedded systems, use themulti-threading technology, design the A/D driver, hardware SPI driver program andtop-level taskcontrol procedures. Designed PC software to tset the performance indicators ofthe node based on VC++6.0platform. System platform has strong interaction, wirelesscommunication system is high-speed and low-cost, the system can easy to operate. Afterhardware circuit design and software programming, test the various functions of the prototype,experiments show that the prototype achieve the accurate acquisition, transmission,processing of the data, the indicators have reached the system design requirements.