Author:
Rafique Faisal,Siddiqui Najeeb
Abstract
Most of the warm blooded animals emanate thermal radiations in the MWIR to LWIR (Medium Wave to Long Wave Infrared) range from 3μm to 18μm. If the object is warmer than the surroundings, its thermal radiation is shifted toward higher frequency within the band and the thermal flux rate becomes stronger. To detect radiation in this band, single and multi-elements pyroelectric sensors utilized in the scanning systems to detect, with background contrast, the presence of still or moving thermal objects emitting thermal flux in the bandwidth specified. PIR sensors are commonly used to detect these radiation, their response is further processed by electronic systems and generally analyzed by software embedded systems. Here we present a comparative study of commercially available PIR sensors. In this study we evaluated dual element PIR sensors for their electrical and thermal parameters. Two types of test procedures were used, which can be used for any type of PIR sensors.
Publisher
Sir Syed University of Engineering and Technology
Reference11 articles.
1. Passive IR field gradient detection of thermal objects in active Fresnel zones
2. J. Fraden, Handbook of Modern Sensors, 2nd ed., Woodburg, NY, AIP Press, 1997.
3. Sensor Technology Handbook by Jon. S. Wilson. Elsevier, ISBN: 0-7506-7729-5
4. B. Ugur Toreyin, et al.”Flame detection system based on wavelet analysis of PIR sensor signals with an hmm decision mechanism”. 16th European signal processing Conference (EUSIPCO 2008), Lausanne, Switzerland, 25th August 2008.
5. A pyroelectric infrared biometric system for real-time walker recognition by use of a maximum likelihood principal components estimation (MLPCE) method