High sensitive and linear pressure sensor for ultra-low pressure measurement

被引:6
|
作者
Huang, Xian [1 ,2 ]
Zhang, Dacheng [2 ]
机构
[1] Peking Univ, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
[2] Peking Univ, Inst Microelect, Beijing 100871, Peoples R China
关键词
Pressure sensor; high sensitive and linear; ultra-low pressure; peninsula-structured diaphragm; finite element method;
D O I
10.1016/j.proeng.2014.11.383
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A novel peninsula-structured diaphragm with specially designed piezoresistors was proposed in our present pressure sensor for ultra-low pressure measurement. Finite element method (FEM) was adopted for analyzing the sensor performance. In comparison to typical sensors with flat and center-bossed diaphragms, the optimized sensor design could achieve excellent sensitivity and linearity. In accordance with the FEM results, the fabricated pressure sensor showed a sensitivity of 18.4mV/V full-scale output and a nonlinearity error of 0.36% FSS in the pressure range 0-5kPa. The proposed sensor structure is potentially a better choice for measuring low pressures. (C) 2014 The Authors. Published by Elsevier Ltd.
引用
收藏
页码:1202 / 1205
页数:4
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