Design Of Farmland Environment Remote Monitoring System Based On ZigBee Network

Cumbersome wiring for traditional farmland monitoring system, the high cost of equipment, limited communication range of shortcomings and difficulties, the paper design set irrigation and environmental information collection system based on ZigBee technology. ZigBee technology and embedded technology,3G network as remote transmission platform, field information real-time acquisition, transmission, monitoring and other functions, effective solution to the case of unattended, the user can still be informed of the farmland crops, reduce the incidence of farmland disaster.The system consists of the next crew of ARM+Linux modules, ZigBee wireless sensor network, a host computer information management system three modules. The system consists of a master node and a plurality of nodes, each node need to connect different types of sensors, the collected field information is sent to the master node ZigBee wireless communication module. The master node ARM+LINUX system the collected data were packaged and sent to the server through a3G wireless router.In order to verify the accuracy of the system data, experimental fields of wheat in Suzhou City of Anhui Lingbi selected four main nodes,24samples from the node for data validation samples and the determination of the actual field values verify that the atmospheric temperatureaccuracy of87.83%, atmospheric humidity accuracy of85.22%, soil temperature accuracy of87.17%, soil moisture accuracy of87.38%, the total solar radiation accuracy of88.23%, the daily rainfall accuracy of90.17%, with an overall accuracy of87.66%, the overall errorto12.33%. The results show that the correct and reliable data transmission of the system. On the integrity of data transmission experiment ZigBee network through different transmission distance:20M distance data loss in the number of2,40M distance under the amount of data loss for a distance of1,60M under the amount of data lost0,80M the lost distance data to0,100m distance data loss in the amount of0,150M from data loss in amount of1,200m distance data loss for the2,250m distance data loss for the3,300m distance the amount of data loss under data loss for the5,350m distance data loss for94m distance data loss for the12,500m distance from the next data loss as13,600M for15,700m distance the following data loss for the16,800m distance under the amount of data loss is16. Obtained the following conclusions:between nodes in the transmission distance between60M and150M-250M, ZigBee network data is lost slightly between60M-150M transmission distance between nodes, there is no loss of data integrity ZigBee network, the node between250M-600M transmission distance between ZigBee network serious data loss, more than600M transmission distance of ZigBee network complete loss of data. Thus ZigBee network transmission distance60M-150M is the best, according to the actual situation in the actual installation of the system should try to choose to install the best transmission distance from the node to achieve the best data transfer effect.After the completion of the system design, combined with the issues that need to expand the system used in agricultural areas, such as agricultural condition monitoring, meteorological disaster monitoring and early warning, and a large number of practical applications. Present in more than20provinces and cities such as Beijing, Tianjin, Shandong, Henan, Shanxi, Jiangsu, Hubei installation and testing of applications, the results showed that:The system design is reasonable, reliable and able to meet a variety of environmental factors in data acquisition and a variety of remote control of auxiliary equipment, broad application prospects.