High Dynamic Range CMOS Imager for Colorimetric Gas Sensors

被引：0

作者：

Punjiya, Meera ^{[1
]}

Owyeung, Rachel ^{[2
]}

Wee, Brian ^{[3
]}

Sonkusale, Sameer ^{[1
]}

机构：

[1] Tufts Univ, Dept Elect & Comp Engn, Medford, MA 02155 USA

[2] Tufts Univ, Dept Chem Engn, Medford, MA 02155 USA

[3] Tufts Univ, Dept Mech Engn, Medford, MA 02155 USA

来源：

2018 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS) | 2018年

关键词：

D O I：

10.1109/ISCAS.2018.8351551

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a high dynamic range CMOS imager for colorimetric gas sensors. In such sensors there is a need to detect change in intensity from color change in the presence of strong background illumination. The designed imager utilizes a dual linear-logarithmic readout architecture to achieve 165dB of dynamic range and contains pixel level event detection. For proof-of-concept, the high dynamic range CMOS imager is interfaced with a flexible gas-sensing textile. We use the inherent spectral response of the textile to detect a chromatic change in the dye in the presence of hydrogen chloride and ammonia, two volatile organic compound (VOC) vapors.

引用

页数：5

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