Method and system for aligning a vehicle with a wireless charging assembly

摘要

A method includes: estimating a position of a driver's eyes in a vehicle during a parking event in a parking spot that includes a wireless charging assembly in which a primary coil is installed, projecting an image onto an interior surface of the vehicle at a location based on the estimated position of the driver's eyes to assist the driver in aligning the vehicle with the wireless charging assembly, transmitting signals from the vehicle toward a reference object located at a rear area of the parking spot and detecting echoed signals at the vehicle caused by the transmitted signals reflecting from a surface of the reference object, and listening for an alignment confirmation signal at the vehicle from the wireless charging assembly indicating that the vehicle is satisfactorily aligned with the wireless charging assembly.

主权项

1. A method comprising:
estimating a position of a driver's eyes in a vehicle during a parking event in a parking spot that includes a wireless charging assembly in which a primary coil is installed; projecting an image onto an interior surface of the vehicle at a location based on the estimated position of the driver's eyes to assist the driver in aligning the vehicle with the wireless charging assembly; transmitting signals from the vehicle toward a reference object located at a rear area of the parking spot and detecting echoed signals at the vehicle caused by the transmitted signals reflecting from a surface of the reference object; performing one or more calculations based on the detected echoed signals to determine an alignment state of the vehicle with respect to the wireless charging assembly; and listening for an alignment confirmation signal at the vehicle from the wireless charging assembly indicating that the vehicle is satisfactorily aligned with the wireless charging assembly, wherein the performing of the one or more calculations based on the detected echoed signals comprises:
calculating one or more of an amplitude of the detected echoed signals and a voltage caused by the detected echoed signals;comparing the calculated amplitude to an amplitude of an echo with an angular offset of 0° with respect to the transmitted signals, or comparing the calculated voltage to a voltage caused by the echo with the angular offset of 0°; anddetermining whether the difference between the calculated amplitude and the amplitude of the echo with the angular offset of 0° or the difference between the calculated voltage and the voltage caused by the echo with the angular offset of 0° is within a predetermined range.