Patent · US Expired

Batteryless sensor used in security applications

US5572190A · kind A · utility

23Cited by
16References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 22, 1995
Grant dateNov 5, 1996
Priority date
Expiry dateMar 22, 2015

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG08B13/08
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

A batteryless sensor includes either a micro miniature generator/gear train or a piezoelectric crystal to convert a movement of a door or window to an ersatz V.sub.cc transient power supply to radiate a coded RF signal to a receiver, a distance away. The receiver may monitor a multiplicity of sensors to identify a source of an intrusion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.