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适用于恶劣环境的MEMS压阻式压力传感器
Authors
伞海生
余煜玺
+3 more
宋子军
王翔
赵燕立
Publication date
15 March 2012
Publisher
Abstract
为了消除潮湿、酸碱、静电颗粒等恶劣环境对压力传感器压敏电阻的影响,提出了一种新型结构的压阻式压力传感器。该传感器将压敏电阻置于应力薄膜的下表面并通过阳极键合技术密封在真空压力腔中,从而减少了外界环境对压敏电阻的影响。介绍了此种压力传感器的工作原理,使用ANSYS软件并结合有限元方法模拟了压敏薄膜在压力作用下的应力分布情况。最后,利用微机电系统(MEMS)技术成功制作出了尺寸为1.5mm×1.5mm×500μm的压阻式压力传感器。用压力检测平台对该压力传感器进行了测试,结果表明,在25~125℃,其线性度小于2.73%,灵敏度约为20mV/V-MPa,满足现代工业使用要求
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Last time updated on 16/06/2016