초록 ▼

A control circuit is provided for transferring power and communication signals through a wireless coupling device in a vehicle steering column. The device can comprise a rotary transformer having a primary and secondary magnetic structure respectfully associated with the wheel side and column side o

A control circuit is provided for transferring power and communication signals through a wireless coupling device in a vehicle steering column. The device can comprise a rotary transformer having a primary and secondary magnetic structure respectfully associated with the wheel side and column side of the steering column. A squib power circuit transforms a high energy power signal suitable for firing an air bag from the column side to the wheel side. A low energy power circuit generates a signal from the column side to the wheel side suitable for operating isolated wheel side electronics, such as cruise control and the like. A tone encoder and decoder circuit communicates low level control signals suitable for signalling wheel side commands from the wheel side to the column side. The low energy power circuit and the tone encoder circuit operate simultaneously and continuously without signal debilitating interaction.

대표청구항 ▼

A control circuit for transferring power and communication signals through a vehicle steering column comprising: a rotary transformer having a primary and a secondary magnetic structure, wherein the primary magnetic structure is associated with a column side of the steering column and the secondary

A control circuit for transferring power and communication signals through a vehicle steering column comprising: a rotary transformer having a primary and a secondary magnetic structure, wherein the primary magnetic structure is associated with a column side of the steering column and the secondary magnetic structure is associated with a wheel side of the steering column, a first circuit for generating a high energy power signal suitable for firing an air bag and for transferring through said rotary transformer said signal from the column side to the wheel side, a second circuit for transferring through said rotary transformer a low energy power signal from the column side to the wheel side suitable for operating isolated wheel side electronics, and a third circuit for transferring through said rotary transformer low level control signals suitable for signaling of wheel side commands from the wheel side to the column side, wherein the second and third circuits can continuously and simultaneously operate without signal debilitating interaction.