| Rice is one of the most important food crops in our country. Promoting the healthydevelopment of rice industry and establishing rice sprouting system of high yield, high efficiencyand automation has become the general trend of the rice sprouting technology development in theworld. Therefore realizing networking and intelligentialize of the rice sprouting, improving therice production efficiency will be of significant importance to sustainable development ofagriculture in our country.Combining the latest development of things networking at home and abroad, as well as themainstream ZigBee wireless network technology in today’s world, in order to set wireless sensornetwork, we researched the information collection, transmission, wireless monitoring in theprocess of rice sprouting. The water temperature conditions affect rice seed growth greatly. Inorder to measure the temperature accurately and effectively in the rice sprouting process, we needto monitor three different phases: rice seed soaking, rice hull breaking and rice sprouting, andanalysis comprehensively according to the demand of the rice in different phases. Therefore wecan improve seed germination rate effectively. According to this situation, this article designed arice sprouting intelligent monitoring system, through monitoring the water temperature change andwater lever change in the process of the rice sprouting, controlling the whole system by sendingcommand automatically and manually. As a result, we can adjust the water temperature and watercircle process intelligently.To begin with, this article designed a wireless sensor network based on ZigBee technology. Inthis network, nodes sended the data messages collected by sensors to the coordinator. Coordinatorsended the data messages collected by itself and sended by nodes to computer. At the same time,coordinator also received and carried out the control commands sended by the computer, ortransmitted the commands received to each node. Then, we designed the software and hardware.Hardware part included: the choices of ZigBee wireless communication module, processor, sensor,relay and liquid crystal display module; design of node and coordinator hardware circuit design,and accomplishment of circuit board manufacture and debugging; design of the text cases withappropriate size plastic cases, design of button panel on the text cases for automatic and manualcontrol. Software design consisted of wireless communication module program part and processormodule program part. Wireless communication module program design included: program design of ZigBee wireless sensor network; researching on data communication mode of node, realizingthe two-way communication function; choosing TinyOS as operating system which was designedfor embedded wireless sensor network, choosing nesC as this operating system programminglanguage, completing application development of wireless communication module. Processormodule program design included: designing the craft control process of the system; defining thedata transfer protocol, making system work according to seed soaking and sprouting process;designing the LCD display. Realize real-time display of data information and working statethrough LCD screen on the controller of each node and coordinator, manual regulation andautomatic control system through button panel. Furthermore, we designed software of PC. Duringthe process, we developed the PC monitoring system through MCGS software, realizing real-timemonitoring of data information, working state and working mode in the whole system, cartoondisplay of craft process, query of work log and history curve, storage of data etc. Finally, testedand debugged the system operation and stability, building ZigBee wireless sensor network,realizing the two-way communication of coordinator and nodes, computer.The experiment showed that ZigBee wireless sensor network designed in this article workedsteadily. The system can realize manual and automatic dual control. It has strong operability, andwill be able to achieve the purpose of the rice sprouting system intelligent monitoring, which hashigh practical application value. |