Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1999-09-14
2000-09-19
Jackson, Stephen W.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
307 91, H01F 2742
Patent
active
061216925
ABSTRACT:
The disclosed invention comprises an electronic control circuit for transferring power and data signals between an electronic circuit associated with a vehicle steering column and an electronic circuit associated with a vehicle steering wheel. Communication between the column circuit and the wheel circuit is accomplished by a rotary transformer having a primary and a secondary magnetic coil, wherein the primary magnetic coil is associated with the steering column and the secondary magnetic coil is associated with the steering wheel. The column circuit and the wheel circuit both include data signals that are transferred to the other across the rotary transformer. The column circuit also includes a power supply which provides power to the wheel circuit across the rotary transformer. Power supplied to the wheel circuit is stored in at least one storage device in the wheel circuit, which then provides the power to the components of the wheel circuit, including an air bag squib driver circuit for firing air bag squibs.
REFERENCES:
patent: 5636863 (1997-06-01), Reid et al.
patent: 5906392 (1999-05-01), Reid et al.
patent: 5934704 (1999-08-01), Hansen et al.
patent: 5945744 (1999-08-01), Dobler et al.
patent: 5994788 (1999-11-01), Dobler et al.
patent: 6012736 (2000-01-01), Hansen et al.
Eaton Corporation document "Non-Contact Steering Column Interface" by Scott Reid, Corporate R&D pp. 1-6 No Date.
SAE document "Contactless Air-Bag Firing and Signal Transmission on the Steering Wheel with an Inductive Contact Unit" by Erich Zabler, Anton Dukart & Thomas Herrmann, Robert Bosch GmbH pp. 1-12, Feb. 23, 1998.
Martin Scheck document "Dynamic simulation of a transformer for a contactless clockspring design used for functional information exchange of airbag, cruise control and other systems." pp. 1-59, Apr. 1998.
Michaels Paul A.
Rea Irvin B.
Eaton Corporation
Jackson Stephen W.
Polk Sharon
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