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A Mobile-Based High...
A Mobile-Based High Sensitivity On-Field Organophosphorus Compounds Detecting System for IoT-Based Food Safety Tracking
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Jin, Han (author)
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Qin, Yajie (author)
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Liang, Hao (author)
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Wan, Lei (author)
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Lan, Hao (author)
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Chen, Guoping (author)
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Liu, Ran (author)
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- Zheng, Li-rong (author)
- KTH,Industriell och Medicinsk Elektronik
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Chiang, Patrick (author)
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Hong, Zhi-liang (author)
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(creator_code:org_t)
- Hindawi Publishing Corporation, 2017
- 2017
- English.
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In: Journal of Sensors. - : Hindawi Publishing Corporation. - 1687-725X .- 1687-7268.
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Abstract
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- A mobile-based high sensitivity absorptiometer is presented to detect organophosphorus (OP) compounds for Internet-of-Things based food safety tracking. This instrument consists of a customized sensor front-end chip, LED-based light source, low power wireless link, and coin battery, along with a sample holder packaged in a recycled format. The sensor front-end integrates optical sensor, capacitive transimpedance amplifier, and a folded-reference pulse width modulator in a single chip fabricated in a 0.18 mu m 1-poly 5-metal CMOS process and has input optical power dynamic range of 71 dB, sensitivity of 3.6 nW/cm(2) (0.77 pA), and power consumption of 14.5 mu W. Enabled by this high sensitivity sensor front-end chip, the proposed absorptiometer has a small size of 96 cm(3), with features including on-field detection and wireless communication with a mobile. OP compound detection experiments of the handheld system demonstrate a limit of detection (LOD) of 0.4 mu mol/L, comparable to that of a commercial spectrophotometer. Meanwhile, an android-based application (APP) is presented which makes the absorptiometer access to the Internet-of-Things (IoT).
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Jin, Han
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Qin, Yajie
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Liang, Hao
-
Wan, Lei
-
Lan, Hao
-
Chen, Guoping
-
show more...
-
Liu, Ran
-
Zheng, Li-rong
-
Chiang, Patrick
-
Hong, Zhi-liang
-
show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
- Articles in the publication
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Journal of Senso ...
- By the university
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Royal Institute of Technology