Vehicle Speaker Assembly for Reverse Warning Sound Generation
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Solution Overview
Problem
Electric and quiet vehicles lack noise, leading to increased accident risks due to reduced auditory awareness.
Innovation Solution
A vehicle sound system with a speaker assembly, sound module, and smart phone application that generates modulated sounds upon vehicle movement or reverse gear engagement, utilizing kinetic generators and echo chambers for sound enhancement, and includes features like animal detection and intercom systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electric vehicles are designed to be quiet, then energy efficiency is improved, but safety is worsened due to lack of noise
Solution Approach 1:
The patent converts the harmful silence of electric vehicles into a beneficial feature by implementing an artificial sound generation system. The speaker assembly mounted on the vehicle body generates audible warnings and operational sounds, transforming the lack of natural engine noise (harm) into an active safety communication system (benefit).
Solution Approach 2:
The patent introduces an intermediary sound generation system between the vehicle's electrical system and the external environment. The speaker assembly, controlled by the control unit and powered by the battery, acts as a mediator that translates vehicle operational states into audible warnings for pedestrians and other road users.
2Reliability
If a sound system is added to quiet vehicles, then safety is improved, but device complexity is worsened
Solution Approach 1:
The patent implements a multi-functional sound system where the speaker assembly serves multiple purposes: generating reverse warnings, forward motion warnings, animal deterrent sounds, and operational notifications. This universal approach consolidates multiple safety functions into a single integrated system, reducing overall complexity compared to having separate systems for each function.
Solution Approach 2:
The patent merges the sound generation functionality with the existing vehicle electrical system. The sound module is powered by the vehicle's battery and integrated with the vehicle's control systems, combining multiple functions (power supply, control logic, sound output) into a unified system rather than adding completely separate components.
3Reliability
If multiple speakers and echo chambers are added, then sound effectiveness is improved, but manufacturing cost is worsened
Solution Approach 1:
The patent segments the sound generation system into multiple speaker units distributed at different locations on the vehicle body. This segmentation allows each speaker to cover specific directional zones, improving overall sound effectiveness and coverage area while using simpler, less expensive individual speaker components rather than one complex high-power speaker.
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
Enhances auditory awareness, preventing accidents by providing audible warnings and alerts, and allowing customizable sound effects and intercom functionality.
Implementation Method 1
a kinetic generator attached to the speaker assembly, the kinetic generator used to charge a battery of the power source as the vehicle moves
Implementation Method 2
an echo chamber that acoustically interacts with the first speaker and a second speaker of the speaker assembly
Data Source
AI summary
A vehicle sound system includes a first speaker of a speaker assembly, the speaker assembly mounted to an external body or external frame of the vehicle; a sound module wirelessly or directly electrically connected to the first speaker, the sound module comprising: one or more processors, and memory; wherein upon the vehicle being placed in reverse, a reverse light power wire of the vehicle powers up the one or more processors causing modulated sound to be played through the speaker.