Method and apparatus for non-contact extraction of on-board vehicle trip recorders
US5224211A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1990 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Apr 12, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C5/0841
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention includes an optical interface accomplished by physically securing mating male and female portions of extractor/extractee members so as to accomplish alignment of respectively interacting infrared light emitting diodes with photo diodes. A total of four transmit and receive pairs are used. Two pairs are used for friend-foe recognition. A second pair transmit and receive data collected by the trip recorder to the host computer (and visa versa). The physical secureness of the mating male and female portions of extractor/extractee modules includes a mechanical fuse (in the form of a breakable tab) which is provided to fail structurally in the event of forces resulting from the vehicle leaving the extraction area with the extractor and extractee still connected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.