Vibration actuated traffic light control system
US5929787A · kind A · utility
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/07
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device for controlling a traffic light, where the controlling of the traffic light is dependent upon receipt and recognition of vibrations. The device includes a vibration receiver for detecting vibrations transmitted through the ground, a processor for converting one or more of the vibrations into a control signal and a controller to trigger a traffic light in response to the control signal. The device may also include a vibration generator, e.g., at least one channel or groove in a traffic-bearing surface. The vibration generator preferably facilitates the production of a pattern of vibrations when the tire of a vehicle passes over the vibration generator. Further, the device may include a vibration receiver, capable of detecting a pattern of vibrations and producing a pattern of signals corresponding to said pattern of vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.