摘要
由于粮堆压力的特殊性,需设计粮库专用压力传感器来检测粮堆重力.利用变极距电容式压力传感器原理设计粮库专用压力传感器,但设计中遇到非线性问题.本文中运用有限元分析方法,设计了应力片模型,有效地改善了电容式压力传感器中的非线性问题.通过在国家直属粮库的实仓测试,该压力传感器性能良好.
As the particularity of grain pressure, it needs to develop the special grain depot pressure sensor to measure grain-gravity. Using the theory of capacitive pressure sensor to develop the special grain depot pressure sensor, but the non-linear problems encountered in the design. The non-linear problems were solved through the finite element analysis to design the film stress model. Practice test in national grain depot proved that the pressure sensor performance is good.
出处
《河南工业大学学报（自然科学版）》
CAS
北大核心
2008年第6期65-68,共4页
Journal of Henan University of Technology：Natural Science Edition
基金
"十一五"国家科技支撑计划(2006BAD08B01)
国家自然科学基金(60673108)
关键词
压力传感器
应力片
有限元
pressure sensor
stress model
finite element
