The Information Of Farmland Transmission System Based On Beidou And Zigbee Technology

The traditional agricultural production has the characteristics of high energy consumption,low efficiency and high pollution,Precision Agricultural is low input,high efficiency and environmental protection,which made it one of the advanced research fields of agricultural engineering subjects.PA works mainly on the time and spatial differences of the crops and their growing environments to implement accurate variable management.So,accessing to environmental parameters of the farmland is the prerequisite and one of the key technologies for the PA.Based on this,This paper designs the information of farmland transmission system based on Beidou and Zigbee Technology,It contains two important links which must be carried out in the process of farmland information collection and transmission,Farmland data acquisition and remote transmission of farmland data,and upper computer software is an important part of the system. This topic mainly has the following research work:First. The realization of upper computer software,Including communication instraction design, data display, storage and waveform playback;second, The establishment of Zigbee sub network, Including the ZStack’s realization of function and transplant, sensor data collection, etc;Third, Design and implementation of data encoding and decoding, The system of the Beidou remote data transmission using the application layer forward error correction algorithm to reduce the transmission bit error rate, Then using the Burrows-Wheeler Transform (BWT) algorithm and the Fixed length coding algorithm combined to compress data and improve the communication efficiency.