Vehicle Emergency Reporting Device Spatial Acoustic Layout
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing emergency reporting devices in motor vehicles often fail to provide adequate acoustic properties and compliance with regulations, particularly in ensuring sufficient sound exposure for all vehicle occupants while maintaining low acoustic pressure levels and minimizing cabling complexity.
Innovation Solution
The emergency reporting device features a hands-free communication system with a microphone and loudspeaker arrangement where the microphone is positioned in a central vertical plane perpendicular to the vehicle's longitudinal direction, and the loudspeaker is placed in a separate plane behind the microphone, integrated into an illumination module on the roof liner or a separating wall, ensuring effective sound exposure for both the driver and passengers with minimal sound pressure and cabling complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the loudspeaker is positioned close to the microphone, then sound exposure for occupants is improved, but acoustic pressure levels increase and cabling complexity increases
Solution Approach 1:
The patent transitions from a conventional linear arrangement to a three-dimensional spatial configuration where the loudspeaker and microphone are positioned in different vertical planes. The loudspeaker is located in a second vertical plane behind the microphone in a first vertical plane, creating spatial separation that reduces acoustic pressure on the microphone while maintaining effective sound exposure for occupants through strategic positioning in the vehicle interior.
2Illumination intensity
If the loudspeaker is positioned close to the microphone, then sound exposure for occupants is improved, but cabling complexity increases
Solution Approach 1:
The patent integrates the loudspeaker with the illumination module, merging two separate functional components into a single unified assembly. This integration eliminates the need for separate cabling for the loudspeaker, reducing overall cabling complexity while maintaining effective sound exposure for vehicle occupants through the combined module's positioning.
3Illumination intensity
If high sound pressure is used, then sound exposure for all occupants is improved, but acoustic properties deteriorate
Solution Approach 1:
The patent implements directional acoustic coverage by positioning the loudspeaker in a specific vertical plane behind the microphone, creating localized sound exposure zones. This spatial arrangement ensures adequate sound exposure for the driver and front-seat passenger while the microphone's positioning in the front vertical plane minimizes exposure to unwanted acoustic interference, maintaining good acoustic properties through localized acoustic zone management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration achieves good acoustic properties, meets regulatory requirements, and ensures sufficient sound exposure for all occupants without excessive sound pressure, while maintaining a cost-effective and simple implementation with reduced cabling complexity.
Implementation Method 1
at least one microphone as well as at least one loudspeaker allowing the vehicle occupant(s) to freely speak and hear in an emergency
Implementation Method 2
at least one microphone as well as at least one loudspeaker allowing the vehicle occupant(s) to freely speak and hear in an emergency
Data Source
AI summary
An emergency reporting device in a motor vehicle for manually and/or automatically reporting an emergency to a report center is provided. A hands-free communication apparatus, consisting of at least one microphone and at least one loudspeaker, can be used to communicate with the report center. The microphone is arranged in a first vertical plane extending perpendicularly to a longitudinal direction of the motor vehicle, and the loudspeaker is arranged separate from the microphone in a second vertical plane extending perpendicularly to the longitudinal direction of the motor vehicle. Furthermore, the microphone and the loudspeaker are additionally arranged in a central region of the motor vehicle containing a vertical longitudinal center plane.