Autonomous Truck Suspension and Warning Deployment During Stops
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Solution Overview
Problem
Autonomous trucks face challenges in optimizing suspension settings for aerodynamic performance and minimizing mechanical impact from road defects, while also needing to efficiently place warning devices and enhance illumination during stops, especially without human intervention.
Innovation Solution
The system uses real-time sensing data to dynamically adjust suspension height and stiffness based on road conditions, automates the placement of warning devices during deceleration, and employs enhanced lighting systems for improved visibility, including flashing patterns and high-luminance lights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If suspension height is lowered to improve aerodynamic performance, then fuel efficiency is improved, but mechanical impact from road defects increases
Solution Approach 1:
The suspension system dynamically adjusts its height based on real-time road condition sensing. When smooth road conditions are detected, the suspension lowers to improve aerodynamics and fuel efficiency. When road defects are detected, the suspension raises to minimize mechanical impact. This dynamic adaptation resolves the contradiction by allowing both low-height benefits and high-height protection at different times.
Solution Approach 2:
The system changes the physical parameter of suspension height in response to detected road conditions. By varying this parameter between low (for aerodynamics) and high (for protection), the system optimizes fuel efficiency while minimizing mechanical impact from road defects.
2Manufacturing precision
If warning devices are placed manually, then placement accuracy is improved, but operational time is increased
Solution Approach 1:
The system replaces manual mechanical placement with an automated deployment mechanism. The warning devices are automatically released and deployed to predetermined locations based on vehicle deceleration data, eliminating the need for manual intervention while maintaining accurate placement within the required 50-100 foot range.
Solution Approach 2:
The system performs preliminary calculation of the optimal warning device placement location based on predicted vehicle stopping position. By pre-determining the deployment timing and location before the vehicle actually stops, the system ensures accurate placement while minimizing the time required for the entire process.
3Use of energy by moving object
If standard lighting is used during stops, then energy consumption is reduced, but visibility for other vehicles is decreased
Solution Approach 1:
The lighting system uses periodic flashing patterns instead of continuous illumination. The lights flash at predetermined intervals to alert other vehicles of the autonomous truck's presence and status. This periodic action provides sufficient visibility for safety while consuming significantly less energy than continuous lighting would require.
Data Source
AI summary
Aspects and implementations of the present disclosure relate to performance and safety improvements for autonomous trucking systems, such as reactive suspensions for maximizing aerodynamic performance and minimizing mechanical impact from road imperfections, automated placement of emergency signaling devices, and techniques of enhanced illumination of stopped and stranded vehicles.