Distributed Hearing System for Traffic Signal Control
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Solution Overview
Problem
Current urban governance systems rely heavily on video information, neglecting the importance of audio information, which is challenging to collect and analyze effectively, especially for mobile noise sources like illegally modified vehicles, requiring significant manpower and resources.
Innovation Solution
A distributed hearing system comprising near audio probe modules at specified locations and a central data collecting/analysis/control module that records and analyzes audio information from vehicles, enabling efficient identification and control of traffic signals based on vehicle-specific audio features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video information is used for urban governance, then comprehensive monitoring is achieved, but computing power requirements and storage costs increase significantly
Solution Approach 1:
The patent extracts only the essential audio features (frequency, volume, waveform characteristics) from the complex video data stream, separating the critical identification elements from the redundant visual information. This extraction approach maintains monitoring effectiveness while dramatically reducing the computing and storage resources required, as audio features require far less processing power than full video analysis.
Solution Approach 2:
The system creates simplified audio feature representations (spectrograms, frequency histograms, volume profiles) that serve as lightweight copies of the original audio signals. These copied feature sets capture the essential vehicle identification information without requiring storage or processing of the complete high-resolution audio or video data, thereby reducing computational burden while preserving monitoring capability.
2Reliability
If manual collection of audio evidence from mobile noise sources is performed, then evidence can be obtained, but significant manpower and time are required
Solution Approach 1:
The system enables self-service evidence collection by automatically detecting, tracking, and analyzing audio signatures from mobile noise sources without human intervention. The audio monitoring network continuously scans for characteristic sounds, automatically identifies violating vehicles based on their unique acoustic fingerprints, and generates evidence reports autonomously, eliminating the need for manual evidence gathering while maintaining high reliability.
Solution Approach 2:
The system implements continuous feedback loops where detected audio features are immediately analyzed, compared against known violation patterns, and used to trigger automated responses. This real-time feedback mechanism ensures that evidence is captured at the moment of violation with high reliability, while the automated nature of the feedback process eliminates manual time consumption entirely.
3Area of stationary object
If distributed audio probe modules are deployed at multiple locations, then audio information coverage is improved, but system complexity increases
Solution Approach 1:
The distributed audio probe modules are designed as universal, multi-functional units that can be deployed at any location in the network. Each module performs identical functions (audio capture, feature extraction, local preprocessing) regardless of its position, allowing the system to expand coverage area simply by adding more of the same standardized modules rather than designing complex location-specific configurations, thereby managing system complexity through uniformity.
Data Source
AI summary
A distributed hearing system includes a plurality of near audio probe modules distributed at a plurality of specified locations in a specified area for recording audio information at the specified locations in the specified area, respectively; and a central data collecting/analysis/control module in communication with the plurality of near audio probe modules for collecting and analyzing the audio information from the plurality of near audio probe modules. The audio information is generated by a vehicle and includes a characteristic feature specific to the vehicle. A traffic control method is used with the distributed hearing system.