MEMS sensor unit for security applications

Communications: electrical – Condition responsive indicating system – Specific condition

Reexamination Certificate

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Details

C340S539100, C340S539130, C340S686600, C340S689000, C340S010100, C701S207000

Reexamination Certificate

active

07129842

ABSTRACT:
A MEMS (micro-electronic mechanical system) sensor unit is described for wireless security applications that provides an extended battery life for the MEMS sensor unit, to provide both immediate MEMS motion detection, and also an “out of range” detection capability when the MEMS sensor unit is moved beyond the range of a security system receiver, providing both capabilities without an unacceptable reduction in battery life for the MEMS sensor unit.

REFERENCES:
patent: 6512478 (2003-01-01), Chien
patent: 6731198 (2004-05-01), Stobbe et al.
patent: 7026941 (2006-04-01), Anderson
patent: 7038584 (2006-05-01), Carter
patent: 7053764 (2006-05-01), Stilp
“How they work, MES (Micro Electro-Mechanical Systems) Technology”, http://www.sensorland.com/HowPage023.html, dated Nov. 11, 2004.
Speller, et al., “A low-noise MEMS accelerometer for unattended ground sensor applications”, www.appliedmems.com, dated Nov. 11, 2004.

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