应用于土壤温度测量的无线传感器节点设计

针对传统土壤温度测量方法的缺陷，设计了一种由MCU、传感器、无线收发模块组成的传感器节点。测量时将整个传感器节点埋入土层长期监测土壤温度，通过无线方式进行传输数据，解决了传统测量方法中劳动强度和测量准确性不能兼顾的矛盾。实验证明，通过对节点的电磁兼容和低功耗设计，使节点的通信距离和电池使用寿命均达到了理想的效果。

Design of Wireless Sensor Node Used for Soil Temperature Measurement

In accordance with the defects in traditional method for soil temperature measurement, a sensor node composed of MCU, sensor and wireless receiving/transmitting module is designed. In the process of measurement, the whole sensor node was buried into soil for long term monitoring the soil temperature, the data was transmitted wirelessly, so the problems of labor intensity and measuring accuracy which could not be considered in traditional measuring method had been resolved. The test proves that the ideal effects for communication distance of node and operative period of battery will be achieved because of the consideration of electromagnetic compatibility and low power consumption.