Collision Mitigation Mode Switching for Autonomous Vehicles
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Solution Overview
Problem
Autonomous vehicles lack the flexibility and safety in responding to potential collisions across different operating modes, leading to inefficiencies and inaccuracies in collision mitigation systems.
Innovation Solution
A computer-implemented method and system that allows autonomous vehicles to switch between multiple operating modes, adjusting response characteristics based on the current mode to improve collision detection and mitigation, including configurable data structures for storing operating modes and response characteristics, enabling immediate reporting to autonomy systems or delayed warnings to drivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single fixed response threshold is used in the collision mitigation system, then the system structure is simple, but the system cannot adapt to different operating modes leading to false positives or negatives
Solution Approach 1:
The patent implements dynamic response characteristics by allowing the collision mitigation system to switch between multiple operating modes (autonomous, semi-autonomous, manual) with different response thresholds. The system dynamically adjusts its behavior based on the current operating mode, enabling adaptability without requiring completely separate systems for each mode.
Solution Approach 2:
The patent changes the response threshold parameter based on the operating mode. By storing multiple response characteristics associated with different operating modes and selecting the appropriate one based on current mode, the system achieves adaptability through parameter variation rather than structural complexity.
2Measurement precision
If the collision mitigation system uses a single response threshold, then the hardware architecture is simple, but measurement precision of collision risk assessment deteriorates
Solution Approach 1:
The patent improves measurement precision by selecting different response threshold parameters based on the operating mode. The system stores multiple response characteristics with different thresholds and activates the appropriate one according to the current mode, achieving accurate collision risk assessment without complex hardware.
3Speed
If the system immediately reports all potential collisions to the autonomy computing system, then response speed is fast, but energy consumption and false positives increase
Solution Approach 1:
The patent optimizes the balance between response speed and energy consumption by changing the response threshold parameter based on operating mode. In autonomous mode with high safety requirements, the system uses a lower threshold for immediate reporting. In manual mode with lower safety requirements, the system uses a higher threshold to reduce false positives and energy consumption.
Solution Approach 2:
The patent applies partial action by selectively reporting only those potential collisions that meet the mode-specific threshold criteria. Rather than reporting all detected potential collisions regardless of severity, the system filters based on the response characteristic threshold, reducing unnecessary computational energy consumption while maintaining appropriate response speed.
Data Source
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AI summary
Systems (100, 200, 600) and methods (500) for controlling an autonomous vehicle (103) are provided. In one example embodiment, a computer-implemented method (500) includes receiving data (608) indicative of an operating mode (321, 324, 327, 106A, 106B, 106C) of the vehicle (103), wherein the vehicle (103) is configured to operate in a plurality of operating modes (321, 324, 327, 106A, 106B, 106C). The method (500) includes determining one or more response characteristics (303, 331,..., 338) of the vehicle (103) based at least in part on the operating mode (321, 324) of the vehicle (103), each response characteristic (303, 331,..., 338) indicating how the vehicle (103) responds to a potential collision. The method (500) includes controlling the vehicle (103) based at least in part on the one or more response characteristics (303, 331,..., 338).