Design And Implementation Of Wireless Data Acquisition System Based On Linux And CC1101

With the development of wireless communication technology, the data acquisition system is being applied more widely. Traditional wired data acquisition system has the characteristics of cumbersome wiring and poor mobility. And wireless data acquisition system based on ZigBee network has characteristics of short distance transmission and high power consumption. Both are difficult to meet the requirements of long-range, large-area data collection application. Therefore, the dissertation proposes long-distance transmission method using CC1101chip in view of the existing problems in traditional data acquisition system.First of all, the dissertation put forward a transmission protocol in connection with CC1101chip and achieved a long-range wireless data transmission. By building topology network structure, protocol achieved node’s hierarchical management, which ensured accurate data transmission orderly between the multi-nodes. The dissertation designed "a total muti-part" routing informat-ion table, which can determine the shortest jump path during data transmission. Besides, to ensure the accuracy and completeness of built routing table, the dissertation proposed the "one master muti-host" route generation and "second carrying information broadcast" protocol.Secondly, the dissertation designed the driver architecture of new protocol in Linux. And by analyzing the hierarchy structure of the protocol, we wrote the CC1101wireless chip driver, which can control CC1101chip directly.Finally, the d issertation designed data acquisition system implementation based on the linux system and CC1101chip. By building the overall architecture of the data acquisition system, the dissertation designed the data acquisition module of various structure, and then implemented data acquisition system in various network topology structure, verified the global routing table integrity at each topological structure, feasibility of node remote control and maintenance as well as accuracy of protocol operation.Wireless data acquisition system based on chip CC1101which was designed in this dissertation, can achieve long-distance, large-range data acquisition. It is low cost and easy to maintain system. The test results show that, the system is running stably, can be applied to various type of network structure and flexible networking. Through further technical refinement, the system can be applied to more areas of industrial and agricultural monitoring.