An inexpensive optical sensor for monitoring total suspended particulates in air

The objectives of this paper are to design an inexpensive optical sensor and present the technique for measuring total suspended particulates (TSP) concentrations in air samples. The designed sensor was based on the transmitted properties of particles in air samples. It used LED's as sources an...

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Main Authors: Daraigan, S.G., Matjafri, M.Z., Lim Hwee San
Format: Conference Proceeding
Language:English
Subjects:
Detectors
Monitoring
Optical design
Optical sensors
Particle measurements
Phototransistors
Root mean square
Signal detection
Voltage
Voltmeters
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creator Daraigan, S.G.
Matjafri, M.Z.
Lim Hwee San
description The objectives of this paper are to design an inexpensive optical sensor and present the technique for measuring total suspended particulates (TSP) concentrations in air samples. The designed sensor was based on the transmitted properties of particles in air samples. It used LED's as sources and a phototransistor as detector. The detected signals were displayed in terms of the output voltage readings recorded by a voltmeter. The algorithm has been developed and used for the measurement of TSP concentrations. The linear correlation coefficient between the estimated TSP and measured TSP was high and the root mean square error was low.
doi_str_mv 10.1109/ISMA.2009.5164804
format conference_proceeding
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Detectors
Monitoring
Optical design
Optical sensors
Particle measurements
Phototransistors
Root mean square
Signal detection
Voltage
Voltmeters
title An inexpensive optical sensor for monitoring total suspended particulates in air
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