US 12,479,360 B2
Adaptive acoustic vehicle warning system
Werner Foag, Munich (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 18/293,911
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Aug. 8, 2022, PCT No. PCT/EP2022/072235
§ 371(c)(1), (2) Date Jan. 31, 2024,
PCT Pub. No. WO2023/016986, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 10 2021 121 075.5 (DE), filed on Aug. 13, 2021.
Prior Publication US 2024/0336191 A1, Oct. 10, 2024
Int. Cl. B60Q 5/00 (2006.01)
CPC B60Q 5/006 (2013.01) 18 Claims
OG exemplary drawing
 
1. A pedestrian warning device for an electrically propelled motor vehicle, comprising:
a warning sound generator;
a warning sound controller configured to control the warning sound generator in order to produce a warning sound perceptible to persons in a vicinity of the motor vehicle when reversing and/or moving slowly forward; and
an internal microphone located interior to the vehicle and configured to detect external noise,
wherein the warning sound controller is further configured to determine an ambient noise background of the motor vehicle based on the external noise detected by the internal microphone and to adapt the warning sound depending on the ambient noise background.