基于蓝牙4.0的低功耗无线传感器网络节点设计

Design of Wireless Sensor Network Nodes with Low Power Consumption Based on Bluetooth 4. 0

针对国内外一些可穿戴式智能设备的无线传感节点的设计方案,有一些是基于集成了无线传输协议的控制器,他们有数字处理能力有限,硬件系统固定,缺乏单元灵活性,特别不利于多路参数并行处理的问题,设计了一种基于蓝牙4.0的低功耗无线传感器网络节点。使用了基于蓝牙4.0技术的CC2540芯片和Xilinx公司的低功耗FPGA芯片,并结合手机应用程序完成了系统设计。并且在硬件设计和软件设计上注意降低整个系统的功耗。测试结果表明,系统在低功耗设计的基础上,可以准确的将数据通过蓝牙发送出去。该系统具有低功耗、低成本、开发难度小等特点,可适用于可穿戴式智能设备等领域。

For some domestic and foreign wearable intelligent device design with wireless sensor nodes,some of them integrate the controller with the wireless protocol,but they are limited in digital processing ability,inflexible in hardware system and lack of flexibility in units,especially they are difficult to parallelly process the multi -pa-rameters.This paper presents a design of wireless sensor network node with low power consumption based on Blue-tooth 4.0.The CC2540 chip on Bluetooth 4.0 and low -power FPGA chip manufactured by Xilinx Company are used to complete the system design by connecting with the mobile application.The power consumption of the whole system is reduced with the hardware design and software design.Test results show that the system can accurately send data via Bluetooth on the basis of the low power consumption design.The system has possesses the features of lowpower consumption,low cost,less development difficulty and etc.,which is suitable for wearable smart devices field.