Communication system and method utilizing an interface protocol for a multiple device vehicle occupant restraint system
US6104308A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jul 3, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/01115
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A communication system (10) for use in a vehicle occupant restraint system (12). A central controller (14) is connected to a plurality of restraint devices (16) by a power and communication conductor (20). A signal function (28), via a voltage modulator (30), of the central controller (14) sequentially outputs voltage modulation messages to the restraint devices (16) on the conductor (20). The application sequence of the voltage modulation messages corresponds to a predetermined sequence of the restraint devices (16). A signal function (40), via a current draw modulator (42), in each of the restraint devices (16) outputs current modulation messages to the central controller (14) on the conductor (20). The application of the current modulation message from each respective restraint device (16) coincides with the outputting of a voltage modulation message from the central controller (14) to another specified one of the restraint devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.