Embedded sensor system for tracking moving objects
US6980920B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2003 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Jan 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/183
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus describing a device for tracking moving objects or persons are taught. The invention is an embedded system using a series of sensors such as light sensors along a passageway to determine some movement characteristics such as number, size, direction, speed and position of objects or people along the passageway. One embodiment of this invention is in fare gates for public transport systems. Another aspect of this invention is the algorithm that determines the movement characteristics using the overlaps or intersections of rising edge, on state, falling edge and off state of signals from the sensors to determine the movement characteristics of objects or humans. The simplicity and robustness of the algorithm allow implement of the invention with inexpensive programmable logical controllers without the need of control by expensive computers. This invention also avoids the attendant disadvantages of other systems using cameras, computer vision or mechanical sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.