The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2010
Filed:
Nov. 19, 2008
Shantanu Chakrabartty, Williamston, MI (US);
Shantanu Chakrabartty, Williamston, MI (US);
Board of Trustees Operating Michigan State University, East Lansing, MI (US);
Abstract
A self-powered sensor is provided for strain-rate monitoring and other low power requirement applications. The self-powered sensor is comprised of: a piezoelectric transducer; a non-volatile memory comprised of at least one floating gate transistor; a current reference circuit adapted to receive a voltage signal from the piezoelectric transducer and operable to output a reference current into the non-volatile memory; an impact-monitoring circuit having a triggering circuit and a switch; the triggering circuit adapted to receive the voltage signal from the piezoelectric transducer and operable to control the switch based on the rate of change of the voltage signal.