The Design And Implementation Of Wireless Sensor Network Node

In recent years,wireless sensor nodes have been applied to a growing number of fields,which have low power consumption,low cost and become to a popular research field.This smaller volume,low-power consumption wireless sensor node design method is studied in this paper,which on the basis of the Zigbee communication protocol.The main research work and the results are as follows:This paper discusses the basic concepts and characteristics of wireless sensor networks and their sensor nodes,the basic principles,architecture and networking of Zigbee protocol,and puts forward the design idea,the overall scheme and core chip selection of wireless sensor nodes based on STM32.The realization of the hardware design of wireless sensor nodes,using CC2520 as RF chip,STM32F103RBT6 MCU as the main control chip,analyzes the structure,performance and characteristics of the main control chip and RF chip,and gives each part of the hardware circuit principle diagram.On the basis of the hardware design,use Zigbee communication protocol to realize wireless sensor nodes of the network and radio communication,and nodes are given the software flow chart and program code of the main program of node,CC2520 radio frequency communication,liquid crystal display.Finally,the wireless sensor node design for debugging and testing,reliability testing and functional testing results show that the nodes to meet the functional requirements,better communication effect,nodes of low power consumption,strong anti-interference ability,prove the feasibility and effectiveness of the design.