Research On Soil Temperature And Humidity Detecting System Based On Zigbee Technology

The current temperature and humidity measurement system is still a manual operation, researchers have to manually import historical data stored in each sensor node to computer from time to time for next software analysis and processing,so the latter part of the data analysis can not reflect real-time current soil parameters. For these shortcomings and problems, this study aims to design a wireless sensor network to collect real time temperature and humidity data and display in the host computer and deal with data without delay. A soil temperature&humidity wireless sensing system was developed by using the CC2530as the core control devices to detect the temperature of the soil, using a temperature sensor DS18B20buried in the ground to detect the soil temperature data, and a PHTS-5V-V moisture sensor made by Wuhan Xin_Huipu Company to detect soil moisture data. The soil temperature&humidity detection system based on ZigBee technology can collect data and deal with data in real time, overcomed the shortcomings of traditional soil temperature&humidity detection method. The main results and conclusions obtained are as follows:1) In order to improve system stability, solar cells and batteries were chosen as power supply for the wireless module, soil temperature and humidity sensors.2) The soil temperature and humidity sensor probe was buried into the soil. Collected data by the soil temperature&humidity sensors was sent to the ZigBee end devices. The processed data by the ZigBee end devices were sent to the coordinator nodes via a ZigBee protocol.3) A PC program written in the host computer (PC) collected data from the ZigBee coordinate through the USB interface and display data, also it can be used to process data. The reliability of the detection system was verified by experiments.