An ultra-high pressure sensor based on SOI piezoresistive material

Journal of Mechanical Science and Technology (Impact Factor: 0.7). 08/2010; 24(8):1655-1660. DOI: 10.1007/s12206-010-0515-0

ABSTRACT This paper describes an ultra-high pressure sensor which is in urgent need and widely used in defense industry and petroleum
industry. It is designed on the combination of micro Silicon on Insulator (SOI) solid piezoresistive chip based on Micro Electro
Mechanical Systems (MEMS) technique and cylindrical elastic body that could successfully convert dynamic ultra-high pressure
measurement in explosion to strain measurement. Performances of the sensor including size, sensitivity, and linearity are
investigated with experiment data. It’s proved that the dynamic ultra-high sensor in the range of 2GPa in this paper is successful
in pressure measurement in explosion. The research of ultra-high pressure sensor in this paper could not only provide a reference
for the improvement of explosive property, but also lay a foundation for research of pressure sensor in the range of 10GPa
of the next step.

KeywordsMEMS-Ultra-high pressure-Sensor-Piezoresistive-SOI

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    ABSTRACT: High-g accelerometers are widely used in explosion and shock measurement. This paper describes a MEMS piezoresistive high-g accelerometer whose range is more than 50000g. It is designed on the basis of silicon on insulator (SOI) solid piezoresistive chip. The chip has a structure where both ends of the beam are fixed. Through the stress analysis and mode analysis of the accelerometer, the detailed parameters of the structure are established. The experimental results obtained from the drop hammer shock machine test and live-fire test show good properties of the accelerometer such as good output characteristic, repeatability and fast response speed. Therefore, the accelerometer in this paper meets the requirement of explosion and shock measurement basically.
    Journal of Mechanical Science and Technology 03/2013; 27(3). · 0.70 Impact Factor

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