Roadside BSM Generator for Unequipped Vehicle Detection
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Solution Overview
Problem
The effectiveness of vehicle safety systems that use the SAE J2735 message specification 'basic safety message' (BSM) for vehicle-to-vehicle safety applications is limited by the low penetration rate of equipped vehicles, as unequipped vehicles still pose a collision threat, and these systems do not realize significant benefits until a certain deployment level is reached.
Innovation Solution
A roadside infrastructure system that generates and broadcasts BSM data using stand-off sensors, such as cameras and video analytics, to detect objects and determine their positions, thereby augmenting vehicle safety applications by providing BSM data for unequipped vehicles, which increases the data available to equipped vehicles and reduces collision threats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vehicle-to-vehicle safety systems rely on equipped vehicles transmitting BSM data, then equipped vehicles can avoid collisions with one another, but unequipped vehicles still pose a collision threat and the system effectiveness is limited by deployment penetration rate
Solution Approach 1:
The patent introduces roadside infrastructure (mediator) equipped with sensors and BSM generators to detect unequipped vehicles and generate their BSM data. This intermediary system bridges the gap between equipped and unequipped vehicles, allowing infrastructure-generated BSMs to represent unequipped vehicles in the vehicle safety network, thereby extending system coverage without requiring universal vehicle equipment installation.
2Adaptability or versatility
If roadside infrastructure generates BSM data for all detected vehicles, then coverage of unequipped vehicles is improved, but system complexity and processing requirements increase
Solution Approach 1:
The system implements selective BSM generation by roadside infrastructure, generating BSMs only for unequipped vehicles detected by sensors rather than all vehicles. The BSM generator receives sensor data, determines whether detected vehicles are equipped or unequipped, and generates BSMs selectively for unequipped vehicles, thereby reducing unnecessary processing and system complexity while maintaining effective coverage.
3Measurement precision
If multiple sensors and processing components are added to roadside infrastructure, then detection accuracy and BSM data quality improve, but cost and system complexity increase
Solution Approach 1:
The patent combines multiple sensor types (cameras, radar, LIDAR, infrared sensors) and processing components (video analytics, depth-dimensioning processors) into an integrated roadside module. The sensor outputs are merged and processed together to detect vehicles and determine their positions, merging detection functions into a unified system that improves measurement precision while managing complexity through integration rather than separate distributed components.
Data Source
AI summary
A roadside infrastructure system configured to generate and broadcast basic safety message data to augment vehicle safety applications. In one example, a roadside module of the system includes a camera, video analytics to process images from the camera to detect vehicles, a BSM generator that generates a BSM for each detected vehicle, and an antenna for broadcasting the BSM. In another example, the roadside module is configured to detect BSM data generated by equipped vehicles, to determine whether any detected vehicles are equipped vehicles generating their own BSM data, and to generate a BSM only for unequipped detected vehicles.