Design and Simulation of a Novel Wireless Passive SAW Soil Pressure Sensor
A novel wireless passive SAW(Surface Acoustic Wave)soil pressure sensor based on delay line theory is designed in this paper.The principle of the sensor is described,and also the mechanical properties analysis and Finite Element Simulation analysis about the piezoelectric substrate is done to verify the effectiveness of the sensor.With hollow cylindrical bottom sealing piezoelectric substrate,and not involving electron mobility inside the crystal,the sensor is immune to electromagnetic interference factors; moreover the piezoelectric substrate adopts ST-X cut quartz crystal materials that is little affected by temperature,so it is also not affected by temperature factor.Sensors based on the principle of SAW,can form a complete sense of passive wireless sensor system.Therefore,compared to traditional pressure sensor,the sensor designed in this paper has a high accuracy and application flexibility.
pressure sensor SAW the delay line Finite Element Simulation
WANG Xiaobo XIE Liqiang LI Juelong XING Jianchun KANG shuai
College of Defense Engineering,PLA University of Science& Technology,Nanjing,210007,China College of Defense Engineering,PLA University of Science& Technology,Nanjing,210007,China;Research C
国际会议
长沙
英文
4696-4701
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）