Rapid measurement system of soil nutrient and moisture based on GPS and SMS technology

Based on the technology of computer and the wireless data transmission, the rapid measurement system that integrates GPS, GIS and the quick analysis equipment of soil nutrient and moisture was developed in order to meet the needs of highly-densed and overall farmland soil information collection，the wireless data communication and fertilization decision in the precision fertilization. On the one hand, DGPS and the equipment of soil moisture were integrated through the AT89lv55 MCU, to realize the integration of soil sampling, measurement of moisture and orientation. On the other hand, the remote communication and the resource sharing between the rapid measurement system and administration decision system of the soil nutrient by using BENQ M22 were realized and the rapid measurement equipment was developed with the model that can quickly transform measured value into conventional value concerning calcareous cinnamon soil. Meanwhile, the system has realized the visualized analysis and management of soil nutrient and moisture with the spatial characteristics by integrating Visual Basic and Map-Objects into GIS.