中文摘要：

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．

英文摘要：

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.