In-Vehicle Traffic Sound Processing for Driver Assistance
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Solution Overview
Problem
Current driver assistance systems are inadequate in providing accurate and uncluttered guidance to drivers, leading to potential road accidents, and there is a need for an improved method to process traffic sound data for effective in-vehicle assistance, especially in complex driving scenarios.
Innovation Solution
The system processes sound data from multiple audio-input devices to determine the distance, position, and type of nearby vehicles, generating virtual sound alerts and displaying relevant information through audio-output devices and an infotainment system, using Head-Related Transfer Function (HRTF) for accurate sound reproduction and image recognition for obstacle detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If driver assistance systems provide more guidance information to drivers, then driver awareness improves, but the guidance becomes cluttered and harder to follow
Solution Approach 1:
The system extracts and separates critical safety information from general traffic information. Audio-output devices deliver only essential alerts (e.g., immediate dangers) to the driver, while less critical information is directed to passenger displays or omitted, preventing information overload while maintaining awareness
Solution Approach 2:
Different types of information are delivered through different channels with different qualities. Critical safety alerts use audio output for immediate driver attention, while non-critical information uses visual displays for passengers, ensuring each receiver gets appropriately tailored information without clutter
2Measurement precision
If the system processes sound data from multiple audio-input devices to determine distance and position of nearby vehicles, then measurement precision improves, but device complexity increases
Solution Approach 1:
The system segments the audio processing function across multiple independent audio-input devices distributed throughout the vehicle. Each device independently captures sound data from its local position, and the processor combines these segmented inputs to achieve precise 3D localization of external vehicles without requiring a single complex sensor system
Solution Approach 2:
Existing audio-input devices (designed for general audio purposes) are repurposed to perform multiple functions: capturing ambient sound, determining vehicle positions, and providing spatial awareness. This multi-functionality achieves precise measurement without adding dedicated specialized sensors, reducing overall system 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
This solution enhances driver awareness by providing clear and relevant alerts and information, improving safety by accurately representing nearby vehicles and obstacles, and enabling better decision-making in dynamic traffic conditions.
Implementation Method 1
receipt of sound data captured by two or more audio-input devices. The sound data may correspond to sound emanated from one or more other vehicles
Implementation Method 2
using Head-Related Transfer Function (HRTF) for accurate sound reproduction
Data Source
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AI summary
Various aspects of a system and method to process traffic sound data to provide in-vehicle driver assistance are disclosed herein. The system includes one or more circuits in an electronic control unit (ECU) of a first vehicle. The one or more circuits in the ECU are configured to receive sound data captured by two or more audio-input devices associated with the first vehicle. The sound data corresponds to sound emanated from one or more other vehicles. Thereafter, a relative position (distance and/or angle) of the first vehicle from a second vehicle of the one or more other vehicles is determined based on the received sound data. Further, an in-vehicle alert is generated for the first vehicle based on the determined relative position. The in-vehicle alert comprises a virtual sound representative of sound emanated from the second vehicle.