지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.11
- 수록면
- 325 - 328 (4page)
이용수
초록· 키워드
오류제보하기
This paper presents a hand-held explosive detector system based on piezo-resistive cantilever sensors. A novel signal conditioning scheme comprising current excitation method with modified half bridge configuration, is implemented to measure as low as 20 ppb variations in the sensor resistance. The proposed circuit is insensitive to thermoelectric and stray noise effects as well as to temperature
changes with minimum SNR value of 20 dB which is better than previously reported values. The hand held system comprises micro-cantilever sensor, analog signal conditioning module, sigma-delta ADC, digital modules along with digital output displayed on the LCD. The micro-cantilevers feature a special coating like 6-Marcaptonicotonic acid (6-MNA) or 4-mercaptobenzoic acid (4-MBA) on one side of the cantilever. The selective reaction takes place with TNT and RDX molecules (the target analyte molecules) on the functionalized cantilever surface with special coating. This reaction changes the resistance of the piezo-resistive sensor. On-chip implementation of one of the techniques is presented while some other methods are realized using discrete components. The objective is to explore different techniques for converting cantilever deflection into a measurable quantity and challenges ahead of converting explosive detector system into a complete SoC. These challenges are also discussed in the paper.
changes with minimum SNR value of 20 dB which is better than previously reported values. The hand held system comprises micro-cantilever sensor, analog signal conditioning module, sigma-delta ADC, digital modules along with digital output displayed on the LCD. The micro-cantilevers feature a special coating like 6-Marcaptonicotonic acid (6-MNA) or 4-mercaptobenzoic acid (4-MBA) on one side of the cantilever. The selective reaction takes place with TNT and RDX molecules (the target analyte molecules) on the functionalized cantilever surface with special coating. This reaction changes the resistance of the piezo-resistive sensor. On-chip implementation of one of the techniques is presented while some other methods are realized using discrete components. The objective is to explore different techniques for converting cantilever deflection into a measurable quantity and challenges ahead of converting explosive detector system into a complete SoC. These challenges are also discussed in the paper.
목차
Abstract
I. INTRODUCTION
II. EXPLOSIVE DETECTOR HAND HELD SYSTEM
III. SYSTEM ON CHIP IMPLEMENTATION AND IT’S CHALLENGES
IV. CONCLUSION
ACKNOWLEDGMENT
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2013-569-001475042