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http://dx.doi.org/10.5573/ieie.2016.53.2.109

Development of Standing and Moving Human Body Sensing Module Using a Chopper of Shutter Method  

Cha, Hyeong-Woo (Department of Electronics Eng., Cheongju University)
Lee, Won-Ho (Department of Electronics Eng., Cheongju University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.53, no.2, 2016 , pp. 109-116 More about this Journal
Abstract
Sensing module of standing and moving human body using shutter method was developed. The module consists of Fresnel lens, pyroelectric infrared (PIR) sensor, interface circuit of the PIR, micro control unit(MCU), and alarm light emitting diode(LED). The principle for standing human body is chopping the thermal of human body using camera shutter. The human sensing signal in MCU by algorithm of interrupt function is detected. By unifying an apparatus and print circuit board(PCB), the developed module can be replaced as commercial moving human body detector. Experiment results show that sensing distance is about 7.0m and sensing angles is about $110^{\circ}$ at room temperature. In these condition, sending ratio was 100% and the power dissipation of the module was 100mW.
Keywords
pyroelectric infrared sensor; sensor interface; chopping using shutter; standing body detector;
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