Trailer Load Detection and Adaptive Driving Mode Control
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Solution Overview
Problem
Transporting sensitive, fragile, or heavy cargo with trailers poses challenges, particularly during high-speed driving, as existing systems fail to adequately address the instability and stress caused to both the cargo and the driver due to jerky movements and sudden accelerations or braking.
Innovation Solution
A driver assistance system that detects the cargo's sensitivity and weight, activating a specific driving mode for semi-autonomous or autonomous longitudinal and lateral guidance, smoothing steering movements, limiting acceleration, and providing enhanced engine power or braking characteristics to ensure gentle handling of the load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a trailer device is used to transport heavy or sensitive cargo, then the transport capacity is improved, but the stability and safety of the cargo deteriorates due to jerky movements and sudden accelerations
Solution Approach 1:
The system dynamically adjusts driving parameters based on real-time detection of cargo properties. The control unit modifies acceleration rates, steering angles, and braking forces according to the detected cargo weight and sensitivity level, enabling the vehicle-trailer combination to adapt its behavior to maintain cargo stability while transporting heavy loads.
Solution Approach 2:
The system changes operational parameters such as maximum acceleration, steering response sensitivity, and braking intensity based on detected cargo characteristics. When sensitive or heavy cargo is detected, the system reduces acceleration rates and steering angles to prevent cargo movement and stress.
2Speed
If the driver manually controls the vehicle during high-speed driving, then the response time is improved, but the cargo safety deteriorates due to jerky steering movements and sudden maneuvers
Solution Approach 1:
The system continuously monitors cargo position, vehicle dynamics, and road conditions through sensors, then feeds this information back to the control unit. The control unit adjusts steering and acceleration commands in real-time to smooth out jerky movements while maintaining responsive driving, thereby reducing cargo stress without sacrificing response time.
Solution Approach 2:
The control unit acts as an intermediary between the driver's steering input and the actual vehicle response. It filters and smooths steering commands, particularly when sensitive cargo is detected, reducing the transmission of jerky movements to the cargo while still allowing the driver to maintain control and respond to road conditions.
3Productivity
If the driver accelerates or brakes strongly to maintain productivity, then the travel time is improved, but the cargo safety deteriorates due to sudden movements causing stress and nervousness in sensitive loads
Solution Approach 1:
The system modifies acceleration and braking parameters based on detected cargo sensitivity. When sensitive or heavy cargo is detected, the system limits maximum acceleration and deceleration rates, preventing strong maneuvers that would cause cargo stress while still allowing efficient travel at appropriate speeds.
Solution Approach 2:
The system dynamically adjusts the aggressiveness of acceleration and braking maneuvers based on real-time cargo detection. The control unit smooths out sudden changes in vehicle motion, maintaining productive travel patterns while adapting the intensity of maneuvers to protect sensitive cargo from stress and nervousness.
Data Source
Figure 1
AI summary
The invention relates to a method for operating a motor vehicle (10) with a trailer hitch (12), which is carried out by a driver assistance system (18) of the motor vehicle (10). The invention provides that the driver assistance system (18) detects a coupling of the motor vehicle (10) with the trailer hitch (12) (S2), provides a load categorization signal that describes a property of a load (14) of the trailer hitch (12) (S5), and uses the provided load categorization signal to check whether the load (14) meets a predetermined special transport criterion. The predetermined special transport criterion describes a predetermined minimum weight and/or a predetermined minimum degree of sensitivity of the load (14).If the cargo (14) meets the specified special transport criterion, an at least semi-autonomous driving mode is determined based on the property described by the provided cargo categorization signal (S8), and the determined driving mode is activated (S9).