Driver alert system for the steering wheel of a motor vehicle
First Claim
1. A driver alert system for a steering wheel of a motor vehicle, comprising an electric motor, an eccentric mass connected to the electric motor and coupled with the steering wheel, a control circuit for providing electric supply to the electric motor in response to an alert activation signal, wherein the motor is controlled by the control circuit to an operation level of voltage during a portion of a vibration period with a non-vibration period following the vibration period, and the motor is over or under-controlled with respect to the operation level at the beginning or end of the vibration period.
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Accused Products
Abstract
A driver alert system for the steering wheel of a motor vehicle. The system comprises an electric motor, an eccentric mass connected to the electric motor, and a control circuit for providing electric supply to the electric motor in response to an alert activation signal The motor is controlled by the control circuit to an operation level of voltage during a portion of a vibration period with a non-vibration period following the vibration period, and the motor is over or under-controlled with respect to the operation range at the beginning or end of said vibration period.
20 Citations
31 Claims
- 1. A driver alert system for a steering wheel of a motor vehicle, comprising an electric motor, an eccentric mass connected to the electric motor and coupled with the steering wheel, a control circuit for providing electric supply to the electric motor in response to an alert activation signal, wherein the motor is controlled by the control circuit to an operation level of voltage during a portion of a vibration period with a non-vibration period following the vibration period, and the motor is over or under-controlled with respect to the operation level at the beginning or end of the vibration period.
- 16. A driver alert system for a steering wheel of a motor vehicle, comprising an electric motor, an eccentric mass connected to an axis of the electric motor and coupled with the steering wheel, and a control circuit for providing electric supply to the electric meter in response to an alert activation signal, wherein the motor is controlled to provide one or more vibration periods in which the motor rotates the mass to produce vibrations, and one or more non-vibration periods in which the mass is not rotated with the one or more vibration periods alternating with the one or more non-vibration periods, and the motor is controlled during a vibration period after an initial segment of the vibration period at an operation voltage level, and the motor is over-controlled with respect to the operation level during the initial segment.
- 25. A driver alert system for a steering wheel of a motor vehicle, comprising an electric motor, an eccentric mass connected to an axis of the electric motor and coupled with the steering wheel, and a control circuit for providing electric supply to the electric motor in response to an alert activation signal, wherein the motor is controlled to provide one or more vibration periods in which the motor rotates the mass to produce vibrations and one or more non-vibration periods following a vibration period in which the mass is not rotated, and the motor is controlled during the vibration period before an end segment of the vibration period at an operation level, arid the motor is under-controlled with respect to the operation level during the end segment.
Specification