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DE-102024132616-A1 - Motor vehicle and method for controlling a loudspeaker device of a motor vehicle

DE102024132616A1DE 102024132616 A1DE102024132616 A1DE 102024132616A1DE-102024132616-A1

Abstract

Motor vehicle, comprising several vehicle wheels (141, 142, 161, 162), a vehicle interior (20), a loudspeaker device (30) comprising several loudspeakers (321, 322, 323, 324) and a control unit (34) for controlling the loudspeakers (321, 322, 323, 324), wherein the loudspeakers (321, 322, 323, 324) are arranged in different areas of the vehicle interior (20), wherein the control unit (34) is connected by signal to a wheel state detection unit (40), wherein the wheel state detection unit (40) is configured to determine the driving dynamics state of each vehicle wheel (141, 142, 143, 144), and wherein the control unit (34) is configured so that each vehicle wheel (141, 142, 161, 162) receives at least one Speakers (321, 322, 323, 324) are assigned, whereby the speakers (321, 322, 323, 324) are controlled depending on the determined driving dynamics states of the vehicle wheels (141, 142, 161, 162).

Inventors

  • Leif Kahler

Assignees

  • DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20241108

Claims (10)

  1. Motor vehicle, with several vehicle wheels (141, 142, 161, 162), a vehicle interior (20), a loudspeaker device (30) comprising several loudspeakers (321, 322, 323, 324) and a control unit (34) for controlling the loudspeakers (321, 322, 323, 324), wherein the loudspeakers (321, 322, 323, 324) are arranged in different areas of the vehicle interior (20), characterized in that the control unit (34) is connected by signal to a wheel state detection unit (40), wherein the wheel state detection unit (40) is configured to determine the driving dynamics state of each vehicle wheel (141, 142, 143, 144), and wherein the control unit (34) is configured to provide each vehicle wheel (141, 142, 161, 162) at least one loudspeaker (321, 322, 323, 324) is assigned, whereby the loudspeakers (321, 322, 323, 324) are controlled depending on the determined driving dynamics states of the vehicle wheels (141, 142, 161, 162).
  2. motor vehicle Claim 1 , characterized in that a loudspeaker (321, 322, 323, 324) is assigned to the vehicle wheel (141, 142, 161, 162) which is closest to the loudspeaker (321, 322, 323, 324).
  3. motor vehicle Claim 1 or 2 , characterized in that the control unit (34) is designed such that the volume of the loudspeakers (321, 322, 323, 324) is adjusted depending on the driving dynamics states of the vehicle wheels (141, 142, 161, 162).
  4. Motor vehicle according to one of the preceding claims, characterized in that the control unit (34) is designed such that a predefined noise is output via the loudspeakers (321, 322, 323, 324) depending on the driving dynamics states of the vehicle wheel (141, 142, 161, 162).
  5. Motor vehicle according to one of the preceding claims, characterized in that an optical display device (52) is provided which is connected to the wheel condition determination unit (40) by means of a signal and is designed to display the driving dynamics state of each vehicle wheel (141, 142, 161, 162).
  6. Motor vehicle according to one of the preceding claims, characterized in that the wheel condition determination unit (40) has an adhesion determination module (42) which is designed to determine the adhesion of the vehicle wheels (141, 142, 161, 162) to a roadway during driving operation, wherein the driving dynamics state is determined based on the determined adhesion.
  7. motor vehicle Claim 6 , characterized in that the wheel condition detection unit (40) is designed to detect a loss of adhesion based on the adhesion determined by the adhesion detection module (42), wherein the control unit (34) controls the loudspeaker (321, 322, 323, 324) assigned to the vehicle wheel (141, 142, 161, 162) on which a loss of adhesion is detected, such that a predefined warning signal is output.
  8. Motor vehicle according to one of the preceding claims, characterized in that the wheel condition determination unit (40) has a torque distribution module (44) which is configured to determine the torque distribution at the vehicle wheels (141, 142, 161, 162), wherein the vehicle dynamics state is determined based on the determined torque distribution.
  9. motor vehicle Claim 8 , characterized in that the torque distribution module (44) is connected by signal to a control unit (191, 192) of a torque vectoring unit (181, 182).
  10. A method for controlling a loudspeaker device of a motor vehicle, wherein the loudspeaker device (30) comprises several loudspeakers (321, 322, 323, 324) arranged in the vehicle interior (20), each loudspeaker (321, 322, 323, 324) being assigned to a vehicle wheel (141, 142, 161, 162) of the motor vehicle (10), comprising the following steps: - Determining the vehicle dynamics state of each vehicle wheel (141, 142, 161, 162), - Determining loudspeaker control signals for each loudspeaker (321, 322, 323, 324) depending on the determined vehicle dynamics states, - Controlling the loudspeakers (321, 322, 323, 324) with the loudspeaker control signal.

Description

The invention relates to a motor vehicle, comprising several vehicle wheels, a vehicle interior, a loudspeaker device which has several loudspeakers and a control unit for controlling the loudspeakers, wherein the loudspeakers are arranged in different areas of the vehicle interior. Such motor vehicles, each with a loudspeaker device comprising several loudspeakers arranged in the vehicle interior, i.e., in the passenger compartment, are generally known from the prior art. For example, the DE 10 2016 202 166 A1 such a loudspeaker device, wherein the individual loudspeakers are controlled by a control unit. As in the DE 10 2016 202 166 A1 Typically, optimal acoustic reproduction for the application is provided by controlling the individual loudspeakers. During vehicle operation, it is advantageous for driving safety if driving events can be perceived visually, haptically, and audibly by the driver. Conversely, it is advantageous for the vehicle's comfort if the noises present in the external environment are not audible or only partially audible to the vehicle's occupants. However, this also dampens driving noises, making them barely perceptible or not at all to the driver. The object of the invention is to provide a motor vehicle in which, on the one hand, driving comfort is high and, on the other hand, driving events can be perceived by the driver in the best possible way for driving safety. The problem is solved by the features of claim 1. According to the invention, the control unit is connected to a wheel state determination unit via a signal, wherein the wheel state determination unit is designed to determine the driving dynamics state of each vehicle wheel, and wherein the control unit is designed such that at least one loudspeaker is assigned to each vehicle wheel, wherein the individual loudspeakers are controlled depending on the driving dynamics states of the vehicle wheels. By controlling the loudspeakers based on the driving dynamics of each individual wheel, the driver can be provided with the driving sounds necessary for safe operation. This wheel-specific sound output allows the driver to precisely assign specific driving dynamics to individual wheels and, based on this information, intervene in or control the vehicle's operation. For example, the driver can react appropriately and take countermeasures if the rear of the vehicle begins to slide, which is perceived by an acoustic output from the loudspeakers located in the rear of the vehicle interior and assigned to the rear wheels. In this way, a motor vehicle can be provided in which, on the one hand, driving comfort is high and, on the other hand, the driving events relevant to driving safety can be specifically reproduced and perceived by the driver. Preferably, the loudspeaker located closest to a vehicle wheel is assigned to that wheel. This allows the loudspeakers to be spatially assigned to the vehicle wheels, enabling the driver to immediately and intuitively associate the audible sounds or signals generated by the loudspeakers with predetermined vehicle wheels and, if necessary, to take appropriate action based on this information. In a preferred embodiment, the control unit is configured such that the volume of the loudspeakers is adjusted depending on the driving dynamics state of each vehicle wheel. Additionally or alternatively, the control unit is configured such that a signal sound is emitted via the loudspeakers depending on the driving dynamics state of each vehicle wheel. This allows the driver to be informed of the driving dynamics state of one or more vehicle wheels in various or combined ways. Preferably, an optical display device is provided which is connected to the wheel condition detection unit via a signal and is designed to display the driving dynamics state of each vehicle wheel. This allows the driver to perceive the driving dynamics states of the vehicle wheels both audibly and visually. Preferably, the wheel condition detection unit includes a grip determination module designed to determine the grip of the vehicle wheels on the road surface during driving, whereby the driving dynamics state is determined based on the determined grip. The grip between the The friction coefficient between the tires and the road surface is a crucial factor for the vehicle's operation. Determining, or at least estimating, this value as accurately as possible is advantageous, although the maximum achievable friction coefficient is relatively difficult to measure from a vehicle's perspective and can vary significantly depending on the road surface. Its value depends largely on the surface's characteristics and is typically estimated. Specifically, the wheel condition detection unit is designed to detect a loss of traction based on the adhesion determined by the adhesion detection module. The control unit then activates the speaker assigned to the wheel where a loss of traction is detected, emitting a warning signal. By detecting the l