Rice Seedling Environment Intelligent Monitoring System For ZigBee Network

Traditional wired monitoring system has complicated wiring, cables and other perisha ble some constraints can not be long-term use, and wireless sensor networks to overcome these drawbacks. At present, mainly used in short-range wireless communications ZigBe e technology has many advantages, such as: short distance, low complexity, low speed, l ow power and low cost. Although ZigBee technology has so many advantages, used in a gricultural greenhouses among the scene not too much, for this situation, the paper desig n of rice seedling greenhouse intelligent monitoring system based on ZigBee technology.Papers from the hardware design stage to start, depending on the application needs of agricultural greenhouses monitoring system, gives system design, and in accordance wi th design requirements, a schematic diagram showing CC2430 chip based data acquisition and data aggregation nodes and node hardware circuit diagram. For wired transmission wiring complexity, the situation is not conducive to long-term use, using the ZigBee tech nology to enhance system reliability. After collecting the actual operating system environ ment parameters test, seedling shed by the external air temperature, humidity and internal air temperature and humidity, soil temperature comparative analysis of the results at Apr il ~ May rice seedling period, the greenhouse temperature and humidity changes in the e nvironment by external weather Effect of changes in conditions, when the weather is nic e outside, indoor and outdoor temperature changes in the larger, sometimes shed daytime maximum air temperatures can reach more than 40℃, the highest soil temperature reach es above 25℃. Since the seedlings in the growing season optimum air temperature is 20℃ ~25℃, the optimum soil temperature is 10℃ ~20℃, when the sensor detects data th an the upper limit, the sensor will be collected ambient temperature data via ZigBee nod e is transferred to the next crew microcontrollers, lower computer through the wireless m odule sends the signal to the PC computer, the system can be based on pre-set program transmits a control signal to the next bit machine actuators via the wireless module, the control shutter motors or micro spray means for greenhouse ventilation or water, loweri ng the temperature sensor detects when the temperature drops below the maximum value,the system will shut down the motor or shutter Ejecta means through the system of en vironmental parameters of intelligent control to ensure that the seedling normal growth.Through the system indicate that the system parameters of the environment within th e real-time monitoring of greenhouse seedlings to good effect, when the deadline to submit papers, all the normal operation of the device, can accurately capture the greenhouse environment parameters, the user can flexibly control of the implementing agencies, the signal transmission system stable, and able to meet the modern large-scale agriculture see dlings intelligence requirements.