High-shock silicon accelerometer with suspended piezoresistive sensing bridges.
- Resource Type
- Article
- Authors
- Bae, Kong; Lee, Jae; Kwon, Ki; Han, Ki-Ho; Kwon, Nam; Han, Jeong; Ko, Jong
- Source
- Journal of Mechanical Science & Technology. Apr2014, Vol. 28 Issue 4, p1449-1454. 6p.
- Subject
- *SILICON
*ACCELEROMETERS
*PIEZORESISTIVE devices
*ELECTRIC resistors
*WHEATSTONE bridge
*METAL fabrication
*MECHANICAL shock
- Language
- ISSN
- 1738-494X
A high-shock 2000 g accelerometer with suspended piezoresistive sensing bridges has been designed, fabricated, and tested. Structural size of the accelerometer has been obtained through an optimal design process. Four resistors are electrically connected to form a Wheatstone bridge circuit. A sensitivity of 25.5 μV/g has been measured from the fabricated accelerometer with a nonlinearity of 0.2% in an acceleration range within 2000 g. The real-time response of the fabricated accelerometers accurately follows the reference accelerometer. The newly fabricated accelerometer has survived an over-shock condition of 4667 g. [ABSTRACT FROM AUTHOR]