1. 毕业设计（论文）的内容、要求、设计方案、规划等
5TM传感器是Decagon公司研制的土壤水分传感器，采用了新技术和耐用材料，测量精度高且价格低廉。
该传感器可以对多处样地、不同土壤深度的水分含量进行长期连续监测。
5TM传感器通过测量土壤的介电常数来计算土壤体积含水量。
2. 参考文献（不低于12篇）
1. G. C. Topp, Electromagnetic Determination of Soil Water Content:Measurements in Coaxial Transmission Lines, WATER RESOURCES RESEARCH, VOL. 16, NO. 3, PAGES 574-582, JUNE 19802. Hugo Fellner-Feldegg, The Measurement of Dielectrics in the Time Domain, The Journal of Phgsical Chemistry, Volume 79, Number 3 March 19693. G. C. Topp, Commento n 'ElectromagnetiDc eterminationo f Soil Water Content: Measurements in Coaxial Transmission Lines', WATER RESOURCES RESEARCH, VOL. 17, NO. 3, PAGE 768, JUNE 19814、李学亮，刘云飞等，基于GPRS 的土壤温湿度采集系统，电子科技，2013 年第26 卷第2 期5、韩剑，张浩平等，基于MSP430 单片机的小气候采集系统，山西电子技术，2013 年第1 期6.Bruhn, D., K. S. Larsen, et al. (2013). "Improving the performance of infrared reflective night curtains for warming field plots." Agricultural and Forest Meteorology 173: 53-62.7. Chen, Y., K. Yang, et al. (2013). "Evaluation of AMSR‐E retrievals and GLDAS simulations against observations of a soil moisture network on the central Tibetan Plateau." Journal of Geophysical Research: Atmospheres.8. Yang, K., J. Qin, et al. (2013). "A Multi-Scale Soil Moisture and Freeze-Thaw Monitoring Network on the Third Pole." Bulletin of the American Meteorological Society. 9. Zhao, L., K. Yang, et al. (2013). "Spatiotemporal analysis of soil moisture observations within a Tibetan mesoscale area and its implication to regional soil moisture measurements." Journal of Hydrology.10、MSP430系列16位超低功耗单片机原理与实践，沈建华、杨艳琴编，北京航空航天大学出版社
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