The Wireless Anti-freezing Control System For Tea Garden Base On ARM

Tea Tree planting process often occurs tea tree frost damage, resulting in greatereconomic losses to the tea farmers Emphasis on the problem of frost damage of tea masterthe tea tree frost damage occurred and law, to take the appropriate preventive or remedialmeasures in a timely manner is an important technology in the tea garden management, butalso the development of high yielding high-quality tea varieties, improve the efficiency ofcultivation of the tea-growing industry an effective way to. Reduce the damage, will be thefuture development of the famous tea production, reduce losses caused by frost damage ofgreat significance. In this paper, ARM9family S3C2440A microprocessor as the core of thedevelopment of a set of tea garden frost control system based on ZigBee wireless sensornetwork, the paper work and the results are as follows:(1) Developed based on ARM (Advanced RISC Machines) the tea plantations wirelessantifreeze control system. Hardware circuit design system, drivers, and frost control software.Hardware circuit design including: power module, serial data transmission module, ZigBeewireless network data transmission module, power amplifier and driver control module.Features: sensors, frost fan, ZigBee module with ARM control communication between thecores; development of the man-machine interface. The objectives are: to solve the traditionalfrost fan control system wiring and can only use the PC to control the problem; facilitatestaff to query and manipulate.(2) Reasonable arrangement of the fan in the tea garden. Respectively, according to themost Provincial fan, most provinces wiring two principles proposed13fan layout methodsto calculate the fan cover13kinds of programs, utilization, and the number of fans. And13arranged respectively wiring. Studies show that: in the tea plantations studied in this paper,by the coverage of the action of the fan, the fan utilization and length of the wiring. Proposedappropriate the antifrost fan arrangement scheme, i.e. when the the antifrost fan disposedquantity is39, the installation angle of depression of20°, in both fan utilization andcoverage at the same time, and can reduce the cost of the entire system wiring.(3) SZ02ZigBee and the SZ06ZigBee communication performance tests and the teagarden frost protection control system performance test. The results show that in the openenvironment the ZigBee module transmission distance is greater than693m, due to the testplots maximum distance of374meters, and therefore choose the wireless module to meet thetest requirements. When the test distance of500meters, vehicles and pedestrians throughroads and trees blocked the transmission of the wireless module affect the smaller packetloss rate of4.61%and1.26%, respectively, direct wave transmission wireless devices; whenthere is obstruction of the buildings, serious data loss, that non direct wave transmission wireless equipment failure. Involved in tea plantations wireless frost control systemverification test, the test results show that the system worked well on ARM Wi-the antifreezecontrol and temperature and humidity information collection requirements, to meet the teagardens, and can save the test data provides the operator with query.The innovations of this paper are as follows:(1) S3C2440A ARM9microprocessor to control the core, the wireless sensor networkused in the tea garden antifreeze control system, developed a set tea garden frost controlsystem based on wireless sensor networks, the system reduces the sensor and control thewiring data transmission problems, to solve the problem of signal processing and controlapplications in the field and multi-sensor case, reducing the cost.(2) Optimize the arrangement of research the tea plantations fan disposed proposed13possible arrangement, and the arrangement method15wiring scheme, combined with anumber of fans, fan cover, the fan utilization, and the wiring length, the arrangement of39frost-fan arrangement scheme.