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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:

2004年02期

Page:

56-58

Research Field:

Publishing date:

Info

Title:

The Development of Cost-Effective Infrared CO₂ Monitor

Author(s):

YU Guangyun

School of Mathematics and Computer Science, Nanjing Normal University, Nanjing 210042, China

Keywords:

infrared;  CO₂;  measurement;  compensation

PACS:

TH74

DOI:

-

Abstract:

The measurement of the concentration of CO₂ in air is very important in industry, agriculture, medicine, hygiene, environmental protection and many other fields. But most instruments used or available in the market for CO₂ measurement are analysis instruments with very complicated mechanism and high prices thus limiting their applications. The development of the low- price instrument to measure the concentration of CO₂ in air is therefore urgent. The paper discusses the working principle and the structure of the simple infrared CO² monitor based on the infrared technique and an advanced m-i croprocessor. The principle to simplify the hardware of the monitor and to improve its sensitivity and accuracy in the measurement is illustrated. The experimental results have shown that the technique can be adopted to produce the gas compos-i tion analyzer at low cost.

References:

[ 1] Lee Rowlands Stuart. An Investigation of Microprocessorbased Portable Instrument Architecture [ D] . Swansea: Un-i versity of Swansea, 1987.
[ 2] Noori Amir H M M. An Instrument to Measure Respiratory Air Flow and Calculate Tidal Volume in the Ventilated Infant [ D] . Swansea: University of Swansea, 1987.
[ 3] Norris D E. Microcomputers in Chemical Practice[M] . London: Prentice Hall, 1985.

Memo

Memo:

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Common functions

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