Research And Design Of Real-time Data Compression Wireless Sensor Network Based On LZW Algorithm

With the development of wireless sensor network technology,in industry,agriculture and even people's daily life,this technology has a very wide range of applications.At the same time,in wireless sensor network technology,the use of ZigBee wireless communication has low power consumption,low cost and other important advantages.As the amount of data that the terminal node needs to transmit becomes larger,and the ZigBee wireless network must be used for long-distance wireless communication in a certain environment,the data collected by the terminal node should be compressed before transmission.The design and implementation of a real-time data compression wireless sensor network based on LZW algorithm is completed according to the above technical features.The system can compress,store and transmit the vibration,pressure and other signals data provided by external sensors in real time.Combining the advantages of wireless sensor networks and data compression algorithm,this system can not only greatly reduce the workload of testers,but also reduce the network bandwidth utilization rate.In this design,the real-time data compression wireless sensor network is composed of a terminal node,a plurality of routers,a coordinator and a computer.The terminal node compresses the collected data using the LZW algorithm,and then stores and sends the compressed data.The router is responsible for the data relay in the wireless network.The coordinator is responsible for sending the received data to the computer.The computer is responsible for restoring the received data and issuing the command.The core of the terminal node is mainly composed of FPGA and CC2530 wireless transceiver chip.The FPGA collects four channels voltage data from the A/D converter for real-time compression,and communicates with CC2530 via UART serial port.In the realization of network function,the development and configuration of CC2530 chip in terminal node,router node and coordinator node are accomplished by using Z-stack protocol stack.Through the final simulation analysis and test verification,the real-time data compression wireless sensor network designed in this paper can meet the design requirements,realize the wireless acquisition and storage of remote data,and reduce the network occupancy rate by compressing the data,which has certain practical value and application prospect.