Portable electronic device distress detection system

Details Portable electronic device distress detection system Portable electronic device distress detection system

2008-11-13

2011-10-25

Previl, Daniel (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S691600, C340S870030

Reexamination Certificate

active

08044817

ABSTRACT:
A portable electronics distress detection system includes at least one strain gage and an alarm circuit. The strain gage is mountable to an element of the portable electronic device. The alarm circuit includes a Wheatstone bridge associated with each strain gage, with each strain gage providing a resistance input to an arm of the associated Wheatstone bridge. When a mechanical stress is imposed on the portable electronic device, the strain gage changes the resistance input to the arm of the associated Wheatstone bridge, producing a nonzero voltage output from the Wheatstone bridge. The alarm circuit activates the portable electronic device user interface if the Wheatstone bridge voltage output exceeds a predetermined set point.

REFERENCES:
patent: 4177868 (1979-12-01), Sanders et al.
patent: 4800973 (1989-01-01), Angel
patent: 4995404 (1991-02-01), Nemir
patent: 5696329 (1997-12-01), Silverio de Magalhaes Machado et al.
patent: 5886302 (1999-03-01), Germanton et al.
patent: 2009/0014659 (2009-01-01), Hennessy et al.
Article Re: “Introduction to Strain Gages”, Introduction-Voltage Divider Circuit—Bridge Circuit, pp. 1-9, www.facstaff.bucknell.edu/mastascu/eLessonsHtml/Sensors/Strain—Gage.htm.

Affiliated with

Also associated with

Rating

Portable electronic device distress detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Portable electronic device distress detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable electronic device distress detection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4290231