Vehicle Path Planning for Windshield and Sensor Obstruction Avoidance
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Solution Overview
Problem
Existing vehicle path planning systems struggle to effectively adapt to situations where windshields and surrounding detecting sensors are obstructed by liquid or solid loose materials, such as precipitation, leading to potential safety risks.
Innovation Solution
A path-adapting system that determines conditions of liquid and/or solid loose materials near the vehicle and movement attributes of surrounding objects using onboard sensors. It calculates an estimated upcoming vehicle position where the material may pose a risk and adjusts the driving path to mitigate this risk by altering the vehicle's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle maintains its original driving path, then the vehicle can follow the intended route efficiently, but the windshield or surrounding detecting sensors may become obstructed by loose material directed by other objects
Solution Approach 1:
The system performs preliminary actions by predicting potential material deposition scenarios before they occur. It calculates estimated upcoming vehicle positions and identifies risks of windshield or sensor obstruction in advance, then proactively adjusts the driving path to prevent obstruction before it happens, maintaining both sensor functionality and driving efficiency.
Solution Approach 2:
The system applies preliminary anti-action by taking countermeasures against potential harmful effects. It predicts when loose material from other objects may be directed onto the vehicle's windshield or sensors, and preemptively modifies the driving path to avoid these predicted hazardous positions, thereby preventing sensor obstruction before it occurs.
2Reliability
If the vehicle adjusts its path to avoid material obstruction, then sensor functionality is maintained, but the vehicle deviates from the intended driving route
Solution Approach 1:
The system applies partial action by making targeted, localized path adjustments only when and where necessary to avoid material obstruction. Rather than continuously deviating from the route, it selectively modifies the driving path at specific upcoming positions predicted to be hazardous, minimizing route deviation time while maintaining sensor functionality.
3Reliability
If the vehicle slows down to prevent material obstruction, then sensor functionality is preserved, but the vehicle's speed and productivity decrease
Solution Approach 1:
The system performs preliminary path adjustment before the vehicle reaches hazardous positions where material obstruction would occur. By proactively modifying the driving path in advance based on predicted upcoming positions and risk assessments, the vehicle can maintain its speed while avoiding obstruction, rather than needing to slow down reactively.
Data Source
AI summary
A path-adapting system for precautionary path planning of a host vehicle. The path-adapting system determines conditions of a liquid and/or solid loose material in the air and/or on the road surface in vicinity of the host vehicle, determines movement attributes in relation to the host vehicle of at least a first object in host vehicle surroundings, determines based on the conditions and movement attributes, at least a first estimated upcoming host vehicle position occurring at an estimated upcoming at least first time instance at which the at least first detected object is estimated to direct the material onto the host vehicle and/or the host vehicle is estimated to direct the material onto the at least first detected object, and determines a driving path, altering for the at least first time instance the at least first estimated upcoming host vehicle position to a modified host vehicle position.