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Journal Article Reduction of False Alarm Signals for PIR Sensor in Realistic Outdoor Surveillance
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Authors
Sang Gi Hong, Nae Soo Kim, Whan Woo Kim
Issue Date
2013-02
Citation
ETRI Journal, v.35, no.1, pp.80-88
ISSN
1225-6463
Publisher
한국전자통신연구원 (ETRI)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.4218/etrij.13.0112.0219
Project Code
11DC1300, 감시정찰 센서네트워크 기본설계 및 검증 기술, Cheol Sig Pyo
Abstract
A passive infrared or pyroelectric infrared (PIR) sensor is mainly used to sense the existence of moving objects in an indoor environment. However, in an outdoor environment, there are often outbreaks of false alarms from environmental changes and other sources. Therefore, it is difficult to provide reliable detection outdoors. In this paper, two algorithms are proposed to reduce false alarms and provide trustworthy quality to surveillance systems. We gather PIR signals outdoors, analyze the collected data, and extract the target features defined as window energy and alarm duration. Using these features, we model target and false alarms, from which we propose two target decision algorithms: window energy detection and alarm duration detection. Simulation results using real PIR signals show the performance of the proposed algorithms. © 2013 ETRI.
KSP Keywords
Decision algorithm, Energy Detection, Environmental change, False Alarm, Indoor Environment, Moving Object, Outdoor environments, Passive infrared, Surveillance system, Target Features, pyroelectric infrared (PIR) sensor