Alert systems and methods for a vehicle
US9153108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Oct 28, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2002/981
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods and vehicles are provided for providing haptic feedback to a vehicle occupant. In one embodiment, the method includes selecting a pattern of active haptic periods during which a controller will command a plurality of haptic actuators disposed in a seat of a vehicle to generate haptic pulses, determining a desired voltage of a signal supplied to the haptic actuators that indicates the active haptic periods to generate a desired intensity of haptic pulses, determining an actual voltage of an energy storage device of the vehicle, calculating a pulse width modulation (PWM) pattern that simulates the desired voltage when applied to the signal using the actual voltage, and generating a signal that indicates the active haptic periods based on the PWM pattern to command the haptic actuators to generate the desired intensity of haptic pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.