Development of a simple in situ instrumentation for detection of breath alcohol and gas leak

Author

Wagiran, R. ; Chong, Alan G E ; Ahmad, I. ; Salleh, A.B.

Author_Institution

Inst. of Biosci., Univ. Putra Malaysia, Selangor, Malaysia

fYear

2002

fDate

19-21 Dec. 2002

Firstpage

470

Lastpage

474

Abstract

The objective of this project is to develop a multiple-detector-system which consists of two systems that are toxic gas detector system and breath alcohol detector. A microcontroller of PIC 16F84, a gas sensor (TGS822), an analog to digital (A/D) TLC 549, and LCD alphanumeric display were used. Both systems are mounted on the same PCB board, a DPDT switch is used for the purpose for switching systems either switch from toxic gas detector system to breath alcohol detector system and vice versa. The systems were tested using butane gas from cigarette´s lighter as well as from human´s breath and it worked satisfactory.

Keywords

analogue-digital conversion; gas sensors; liquid crystal displays; microcontrollers; LCD alphanumeric display; PIC 16F84; analog-to-digital converter; breath alcohol detector; gas sensor; microcontroller; multiple-detector-system; switching systems; toxic gas detector; Circuits; Conductivity; Gas detectors; Instruments; Leak detection; Liquid crystal displays; Microcontrollers; Sensor phenomena and characterization; Solvents; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Electronics, 2002. Proceedings. ICSE 2002. IEEE International Conference on

Print_ISBN

0-7803-7578-5

Type

conf

DOI

10.1109/SMELEC.2002.1217868

Filename

1217868