Lane-Change Speed Control Using Target-Lane Traffic Flow
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Solution Overview
Problem
Current methods for supporting lane changing processes in vehicles are unsatisfactory, as they do not adequately account for traffic conditions in the target lane, leading to inefficient overtaking maneuvers and potential collisions.
Innovation Solution
A method and device that utilize environment data, including traffic density and flow speed from the target lane, to adjust the vehicle's target speed, ensuring safe and efficient lane changes by synchronizing with the speed of vehicles in the target lane, using sensors and cloud services for data collection and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle maintains its current target speed during lane changing, then the cruise control system operates simply, but the vehicle may collide with other vehicles or fail to overtake efficiently
Solution Approach 1:
The system performs preliminary detection of environmental data including traffic density and flow speed in the target lane before the lane change maneuver. This advance information allows the cruise control system to pre-adjust the target speed to match the flow speed of the target lane, ensuring safe integration into the new lane while maintaining efficient overtaking performance
Solution Approach 2:
The system continuously receives environmental data from sensors during the lane change process and uses this feedback to dynamically adjust the target speed. The evaluation device processes real-time traffic density and flow speed information, and the cruise control system modifies the vehicle speed accordingly, creating a closed-loop control system that enhances both safety and efficiency
2Productivity
If the vehicle adjusts its speed to match target lane conditions, then lane changing becomes safer and more efficient, but the cruise control system becomes more complex
Solution Approach 1:
The evaluation device serves multiple functions: it detects environmental data, calculates traffic density, determines flow speed, and provides recommendations for target speed adjustment. By consolidating these functions into a single multi-functional device, the system achieves improved overtaking efficiency without proportionally increasing overall system complexity
Solution Approach 2:
The system combines the cruise control functionality with lane change assistance and environmental assessment capabilities into an integrated system. The cruise control device receives adjusted target speeds from the evaluation device, merging speed regulation with lane change management to achieve efficient and safe overtaking maneuvers
3Measurement precision
If environmental data is thoroughly analyzed for lane changing, then the accuracy of target speed adjustment improves, but the data processing time increases
Solution Approach 1:
The system extracts only the most critical environmental parameters (traffic density and flow speed in the target lane) needed for lane change decisions, rather than processing all available sensor data. This selective extraction maintains high measurement precision for the relevant parameters while minimizing data processing time and computational load
Data Source
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AI summary
The invention relates to a method for supporting a lane-changing process for a vehicle (50) with a speed regulating device (52), wherein the speed regulating device (52) regulates the speed of the vehicle (50) to a target speed (20). The method has the following steps: receiving surroundings data (10) of the surroundings of the vehicle (50) by means of an input device (2), said surroundings data (10) comprising at least information on other vehicles on a target travel lane, determining a current traffic density (11) and a current flow speed (12) on the target travel lane on the basis of the surroundings data (10) using an analysis device (3), adapting the target speed (20) on the basis of the determined current traffic density (11) and the current flow speed (12) using the analysis device (3), and transmitting the adapted target speed (21) to the speed regulating device (52). The invention additionally relates to a corresponding device (1).