System for transmitting broadband data and/or instructions between a moving element and a control station
US4932617A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1987 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Dec 11, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system for transmitting data and/or instructions and/or localization between a moving element and a control station. The system includes a hollow tube running parallel to the path of the moving element and constituting a waveguide, the tube having an emitting face which is pierced by a network of openings, and the moving element including a pair of microwave transmit and/or receive antennas. The network of openings on the emissive face of the hollow tube makes it possible to transmit two distinct electric field signals between the openings and the transmit and/or receive antenna. One of the signals serves to transmit data and/or instructions, and the other serves to measure the speed and the position of the moving element by detecting the presence of the second signal. Other systems relate to the application of such hollow tubes to automobile toll stations for monitoring an enclosure which is dangerous for personnel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.