| Summary: | 博士 === 國立交通大學 === 機械工程學系 === 99 === Intelligent weapons provide a real-time estimation of a medium as the weapon is penetrating through hard object. Input signals are provided by an accelerometer used as a primary sensor. The purpose is to provide for detonation at the proper point as the high-speed penetrator passes through various layers of the object. 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 (＞300G) applications, they completely fail to function.
In this study, we proposed a MEMS-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 3,000–21,000G. 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 pre-set 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.
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