Publications (2)0 Total impact
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ABSTRACT: Most conventional G sensors use cantilever beams or axial springs as triggering devices. The reaction time of these conventional G sensors are often far too long. In many high G ( G) applications, they completely fail to function. This study proposed a microelectromechanical systems-based high G smart sensor, which not only functions at a very high G impact but also identifies the material when a projectile makes an impact on a hard object. This high G smart sensor is intended for use at 3000-21 000 G. The sensor was made of silicon and the triggering mechanism involves a cantilever and a spring structure. The mechanical sensitivity of the sensors can be adjusted to preset the triggering G value. Four sensors, each designated to trigger its own G value were integrated in a unit. Experiments demonstrated that this unit can identify the characteristics of an object. Index Terms—High G, microelectromechanical systems (MEMS), proof mass, smart sensor, spring.IEEE Sensors Journal - IEEE SENS J. 01/2011; 11(4):1046-1050.
Conference Proceeding: Design and simulation of a MEMS high G inertial impact sensor[show abstract] [hide abstract]
ABSTRACT: Conventional inertial impact sensors typically use mechanisms such as cantilever beams or axial springs as triggering devices. Reaction time for these conventional impact sensors are either far too slow or, in many cases, fail to function completely for high G applications. In this study, a MEMS high G inertial impact sensor with a measurement range of 8,000-21,000 G is presented. The triggering mechanism is a combination of cantilever and spring structure. The design of the mechanism underwent a series of analyses. Simulation results indicated that a MEMS high G inertial impact sensor has a faster reaction time than conventional G inertial impact sensors that use a cantilever beam or spring mechanism. Furthermore, the MEMS high G inertial impact sensor is sufficiently robust to survive the impact encountered in high G application where most conventional G inertial impact sensors fail.Sensors Applications Symposium, 2008. SAS 2008. IEEE; 03/2008
National Chiao Tung UniversityHsin-chu-hsien, Taiwan, Taiwan