Vehicular Audio Alert Recognition with Directional Driver Feedback
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Solution Overview
Problem
Drivers may fail to react to important external audio events such as sirens or vehicle horns due to loud music, hearing impairments, or soundproofing, leading to potential safety risks.
Innovation Solution
A vehicular alert system using microphones and an electronic control unit (ECU) to detect external audio events and generate visual and haptic alerts, optionally integrating with cameras for direction indication and suppressing alerts based on volume thresholds and vehicle dynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soundproofing is increased to reduce noise, then comfort is improved, but driver awareness of external audio events deteriorates
Solution Approach 1:
The patent introduces microphones and an ECU as intermediary components between the external environment and the driver. The microphones capture external audio events (sirens, horns) that would otherwise be blocked by soundproofing, and the ECU processes these signals to generate visual alerts on the display, thereby mediating the information transfer without compromising soundproofing effectiveness
Solution Approach 2:
The patent replaces the mechanical/acoustic approach of relying on natural sound transmission through the vehicle cabin with an electronic system. Instead of depending on acoustic waves to reach the driver's ears, the system uses microphones to convert sound waves into electrical signals, processes them electronically, and presents them visually, substituting the acoustic transmission path with an electronic information processing path
2Ease of operation
If loud music is played in the vehicle, then entertainment is improved, but reaction to external audio events deteriorates
Solution Approach 1:
The system introduces microphones and an ECU as intermediary components that capture and process external audio events independently of the in-vehicle audio environment. The microphones are positioned to detect external sounds, and the ECU filters and processes these signals to distinguish genuine external events (sirens, horns) from internal noise sources like music playback, thereby mediating reliable detection despite entertainment audio
Solution Approach 2:
The system implements feedback by continuously monitoring audio signals and adjusting alert generation based on the detected environment. The ECU analyzes audio patterns over time and uses feedback from multiple microphone inputs to distinguish between internal audio sources (music) and external events (sirens, horns), dynamically adjusting which sounds trigger alerts based on the feedback from signal analysis
3Reliability
If multiple alert channels are added (visual and haptic), then driver awareness is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by using the existing vehicle display system and seat control mechanisms for alert purposes. The display, already present for other vehicle functions, is utilized to show visual alerts with directional arrows. The seat, already part of the vehicle's standard equipment, is repurposed to provide haptic feedback through vibration. This allows the system to add multiple alert channels without introducing entirely new components, thereby reducing the increase in device complexity
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 driver awareness of external audio events through visual and haptic alerts, improving reaction times and safety by ensuring drivers are alerted to critical sounds even in noisy environments.
Implementation Method 1
A vehicular alert system a microphone disposed at a vehicle equipped with the vehicular alert system and sensing exterior of the vehicle. The microphone captures audio data.
Implementation Method 2
The electronic circuitry of the ECU includes a processor for processing audio data captured by the microphone. The vehicular alert system, responsive to processing by the processor of audio data captured by the microphone, determines an audio event occurring external of the vehicle.
Implementation Method 3
The alert includes vibration of a seat of the vehicle and a visual alert at a display screen disposed within the vehicle
Data Source
AI summary
A vehicular alert system a microphone disposed at a vehicle. The vehicular alert system, responsive to processing of audio data captured by the microphone, determines an audio event occurring external of the vehicle. The vehicular alert system, responsive to determination that the audio event occurred external of the vehicle, generates an alert for an occupant of the vehicle. The alert includes vibration of a seat of the vehicle and the alert includes a visual alert at a display screen disposed within the vehicle and viewable by a driver of the vehicle. The visual alert indicates direction toward the determined audio event.