Blind Spot Detection Using Sound Source Position Inference
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Solution Overview
Problem
Existing blind spot vehicle detection systems rely solely on sound direction to determine if a vehicle is in a blind spot, which is not accurate for identifying objects, especially in complex environments.
Innovation Solution
A blind spot information acquisition device that combines sound acquisition, sound occurrence position inference, object acquisition, and sound source position identification to accurately determine the presence of objects in blind spots, using microphones and area information detection devices like cameras and radar systems, and provides warnings to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only sound direction is used to determine blind spot presence, then the device complexity is reduced, but the measurement precision of blind spot detection deteriorates
Solution Approach 1:
The patent combines sound acquisition devices (microphones) with area information detection devices (cameras, radar) to create a fused detection system. The sound source position identification component integrates sound occurrence positions with object acquisition information to accurately determine blind spot presence, resolving the contradiction by merging multiple detection modalities rather than using sound direction alone.
2Loss of time
If sound source identification is performed using only sound acquisition data, then the processing time is reduced, but the reliability of blind spot identification deteriorates
Solution Approach 1:
The sound source position identification component acts as an intermediary that fuses sound occurrence positions with object acquisition information. This mediator component correlates acoustic data with visual/radar data to reliably identify blind spot objects, resolving the contradiction by using multiple data sources rather than sound data alone.
3Measurement precision
If multiple detection methods are combined to improve detection accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The blind spot information acquisition device is designed with multi-functionality, where the sound acquisition component and area information detection device work together in a unified system. The sound source position identification component processes both sound and visual/radar data through a single integrated workflow, achieving accurate detection without proportionally increasing system complexity.
Data Source
AI summary
A blind spot information acquisition device includes: a processor configured to: acquire sounds in an area around a vehicle, infer positions of occurrence of the sounds that have been acquired, acquire information relating to objects in the area around the vehicle, and determine that there is a sound occurring in a blind spot in a case in which a sound source in the positions of occurrence of the sounds cannot be identified from the information relating to objects in the area around the vehicle that has been acquired.