Motion detector having asymmetric zones for determining direction of movement and method therefore
US8009044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2006 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Apr 7, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/193
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A detector, system including a detector and method for sensing motion within a detection region. The detector has a detection element and a focusing element aiming received energy corresponding to a presence within the detection region toward the detection element. The focusing element has a plurality of sections in which each of the plurality of sections establishes a corresponding detection zone within the detection region. The plurality of sections are arranged to allow a motion vector to be determined for an object passing through the detection region. The system includes a detector that generates pulses each time presence in a detector zone is detected as well as a central alarm panel. The central alarm panel receives the pulses and has processor that evaluates the timing between electrical pulses to determine the motion vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.