Using a CO2 laser for PIR-detector spoofing

Ric H. M. A. Schleijpen; Frank J. M. van Putten

doi:10.1117/12.2240952

21 October 2016 Using a CO2 laser for PIR-detector spoofing

Ric H. M. A. Schleijpen, Frank J. M. van Putten

Proceedings Volume 9989, Technologies for Optical Countermeasures XIII; 99890K (2016) https://doi.org/10.1117/12.2240952
Event: SPIE Security + Defence, 2016, Edinburgh, United Kingdom

Abstract

This paper presents experimental work on the use of a CO2 laser for triggering of PIR sensors. Pyro-electric InfraRed sensors are often used as motion detectors for detection of moving persons or objects that are warmer than their environment. Apart from uses in the civilian domain, also applications in improvised weapons have been encountered. In such applications the PIR sensor triggers a weapon, when moving persons or vehicles are detected. A CO2 laser can be used to project a moving heat spot in front of the PIR, generating the same triggering effect as a real moving object. The goal of the research was to provide a basis for assessing the feasibility of the use of a CO2 laser as a countermeasure against PIR sensors.

After a general introduction of the PIR sensing principle a theoretical and experimental analysis of the required power levels will be presented. Based on this quantitative analysis, a set up for indoor experiments to trigger the PIR devices remotely with a CO2 laser was prepared. Finally some selected results of the experiments will be presented. Implications for the use as a countermeasure will be discussed.

Citation Download Citation

Ric H. M. A. Schleijpen and Frank J. M. van Putten "Using a CO2 laser for PIR-detector spoofing", Proc. SPIE 9989, Technologies for Optical Countermeasures XIII, 99890K (21 October 2016); https://doi.org/10.1117/12.2240952

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