Detecting persons concealed in a vehicle

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system

Reexamination Certificate

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C702S076000, C702S077000, C702S190000, C340S429000, C340S566000

Reexamination Certificate

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06873921

ABSTRACT:
An improved method for detecting the presence of humans or animals concealed within in a vehicle uses a combination of the continuous wavelet transform and a ratio-based energy calculation to determine whether the motion detected using seismic sensors placed on the vehicle is due to the presence of a heartbeat within the vehicle or is the result of motion caused by external factors such as the wind. The method performs well in the presence of light to moderate ambient wind levels, producing far fewer false alarm indications. The new method significantly improves the range of ambient environmental conditions under which human presence detection systems can reliably operate.

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Dress, William B., “Enclosed Space Detection System (ESDS)”, Nov. 19-20, 1996, Surveillance and Assessment Technologies for Law Enforcement in Proceedings of the SPIE The International Society for Optical Engineering, vol. 2935, 1997 pp. 140-142.*
Karcel, S. W., “Application of the Smart Portal in Transportation”, Nov. 18-20, 1996 In Proceedings of the SPIE The International Society for Optical Engineering, vol. 2902, pp. 231-241.*
Advanced Vehicle Interrogation and Notification (AVIAN) System, as described in “Just a Heartbeat Away,” Tech Beat, Oct. 1997, National Institute of Justice, National Law Enforcement and Corrections Technology Center, pp. 1-2.
Dress, W. B., “Applications of a Fast, Continuous Wavelet Transform,” Proceedings of the SPIE, Wavelet Applications IV, vol. 3078, pp. 570-580, Apr. 1997.

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