Adaptive Lane-Keeping Control for Vehicle Speed Ranges
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Solution Overview
Problem
Existing driver assistance systems do not provide reliable support to drivers for maintaining lane position across the entire vehicle speed range, typically switching off at high speeds and failing to offer adequate assistance during low-speed operations.
Innovation Solution
A driver assistance system that incorporates a lane recognition system, an object recognition system, and a control device capable of adapting support modes based on current vehicle speed, switching between lane-related, object-based, and merged support types to ensure continuous lane-keeping assistance. The system defines the lateral guidance mode as a function of speed, with automatic switching between support types and modes to maintain lane position, and includes a longitudinal control function for distance management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver assistance system uses lane-related support type at high driving speeds, then the reliability of lane-keeping support is improved, but the system becomes less effective when lane markings are not detectable
Solution Approach 1:
The patent merges lane-related support type and object-based support type into a unified lateral guidance system. The control device can selectively activate either support type or both simultaneously depending on detection availability and driving speed, ensuring continuous reliable operation across all conditions.
Solution Approach 2:
The system dynamically adapts the support type based on driving speed and detection conditions. At high speeds with detectable lane markings, lane-related support is prioritized; when lane markings are undetectable or at low speeds, object-based support takes over, creating a flexible adaptive system.
2Productivity
If the driver assistance system uses object-based support type at low driving speeds, then the system provides continuous support in stop-and-go traffic, but the automation level becomes too high for high-speed driving
Solution Approach 1:
The patent changes the automation parameter based on driving speed. At low speeds, the system operates with high automation using object-based support type for continuous support in stop-and-go traffic. At high speeds, it reduces automation level and switches to lane-related support type, allowing driver oversight while maintaining assistance.
Solution Approach 2:
The system dynamically adjusts the extent of automation according to driving conditions. The control device monitors driving speed and automatically transitions between high-automation object-based support at low speeds and lower-automation lane-related support at high speeds, optimizing safety and driver control.
3Adaptability or versatility
If the system switches between different support types based on driving speed, then the versatility across speed ranges is improved, but the device complexity increases
Solution Approach 1:
The patent implements a universal control device that can perform multiple functions: lane detection, object detection, and selective activation of different support types. This multi-functional approach consolidates complexity into a single control unit rather than requiring separate systems for each support type.
Solution Approach 2:
The system applies different support types locally according to specific driving conditions. The control device evaluates current conditions (speed, detection availability) and activates only the necessary support type, avoiding unnecessary system complexity while maintaining versatility across different operating scenarios.
4Ease of operation
If the driver assistance system provides high degree of automation at low speeds, then the ease of operation is improved, but the response time for driver intervention may be delayed
Solution Approach 1:
The system dynamically adjusts automation level based on driving speed. At low speeds where stop-and-go traffic prevails, high automation is provided for ease of operation. At high speeds, the system reduces automation and increases driver involvement, ensuring timely driver response and control when faster reaction times are critical.
Data Source
Figure 1~3
Figure 2
AI summary
The invention relates to a driver assistance system and to a method for assisting the driver of a vehicle (10) while driving, according to which a lane currently driven on by a vehicle is identified by means of a lane identification system, a guiding vehicle (20) preceding the vehicle (10) is identified by means of an object identification system, and the displacement lane thereof as an object lane, and assistance for keeping to the lane (3) is offered to the driver by means of a control device. The control device can be operated in a purely lane-related assistance mode in which the assistance is carried out on the basis of the identified current lane (30), in a purely object-related assistance mode in which the assistance is carried out on the basis of the identified object lane (37), and in a combined assistance mode corresponding to a combination of lane-related and object-related assistance modes, the assistance being offered over the entire speed range of the vehicle (10). The assistance mode used is determined according to the driving speed of the vehicle (10).