Vehicle Sensor Data Sharing Based on Conflict Criticality
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Solution Overview
Problem
Existing vehicle collision avoidance systems face limitations in environmental perception due to sensor range and coverage limitations, and excessive stress on hardware when sharing sensor information at scale, leading to potential delays and awareness gaps.
Innovation Solution
A vehicle-based system that collects and shares sensor information on an as-needed basis using a controller to identify critical scenarios and transmit relevant data to connected vehicles, minimizing computational and network load by only sending information when a critical scenario is anticipated, utilizing messages like Basic Safety Messages, Sensor-Detected Object Messages, and Maneuver Messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor information is shared continuously at scale between vehicles, then awareness and collision avoidance capability is improved, but hardware stress and network load increases excessively causing delays
Solution Approach 1:
The system changes the parameter of information sharing from continuous to event-triggered based on criticality assessment. The controller evaluates whether sharing sensor information is necessary by assessing potential conflict scenarios, and only transmits information when criticality thresholds are met, thereby reducing network load and hardware stress while maintaining collision avoidance capability.
Solution Approach 2:
The system applies partial action by selectively sharing only the necessary portion of sensor information rather than all sensor data. The controller determines which specific sensor information is relevant to potential conflicts and shares only that subset, reducing overall network traffic and computational load while maintaining sufficient awareness for collision avoidance.
2Loss of information
If sensor information is shared continuously at scale between vehicles, then awareness and collision avoidance capability is improved, but network delays occur due to excessive load
Solution Approach 1:
The system changes the timing parameter of information transmission from continuous to event-based. Information is transmitted only when the controller identifies a potential conflict scenario that meets criticality thresholds, eliminating unnecessary transmission delays while ensuring critical information is communicated timely to reduce awareness gaps.
Solution Approach 2:
The controller performs preliminary assessment of potential conflict scenarios before transmitting sensor information. By evaluating whether a critical situation exists beforehand, the system prepares and transmits information only when necessary, preventing network congestion and delays while maintaining adequate awareness for collision avoidance.
3Loss of information
If all connected vehicles share sensor data continuously, then collective awareness is improved, but computational load and energy consumption increase
Solution Approach 1:
The system changes the operational mode from continuous data sharing to selective sharing based on criticality. The controller assesses whether environmental perception improvements are necessary by evaluating potential conflicts, and only activates sensor information sharing when criticality thresholds are met, thereby reducing energy consumption while maintaining adequate environmental awareness.
Solution Approach 2:
The system applies partial action by sharing sensor information only when critical scenarios are detected rather than continuously. This selective approach reduces computational load and energy consumption significantly while maintaining sufficient environmental perception capability for collision avoidance in critical situations.
Data Source
AI summary
In accordance with one embodiment of the present disclosure, a vehicle includes a controller programmed to perform operations including collecting information about an unconnected vehicle, receiving messages from another connected vehicle, identifying a scenario of the another connected vehicle being in conflict with the vehicle or the unconnected vehicle at a future time based on the messages from the another connected vehicle and the information about the unconnected vehicle, and, in response to identifying the scenario of the another connected vehicle being in conflict with the vehicle or the unconnected vehicle at the future time, transmitting a first message including the information about the unconnected vehicle to the another connected vehicle.