Vehicle Control for Speed-Adaptive Lane Change Intent Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems struggle to accurately determine the intended action of surrounding vehicles, particularly when determining if another vehicle intends to change lanes, leading to inappropriate vehicle actions.
Innovation Solution
A control device and method that employs multiple determination schemes based on the speed of the surrounding vehicle, using different criteria such as direction and distance relative to lane demarcation lines, to accurately assess if another vehicle is changing lanes, and adjusts vehicle control accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single determination scheme is used to judge lane change intent, then the control logic is simple, but the accuracy of determining other vehicle's intended action is insufficient
Solution Approach 1:
The patent applies dynamics by making the determination scheme adaptable to different operating conditions. Multiple determination schemes are prepared for different speed ranges, and the system dynamically selects the appropriate scheme based on the other vehicle's speed. This allows the system to use direction-based criteria for low-speed vehicles and distance-based criteria for high-speed vehicles, optimizing accuracy for each scenario without using a overly complex unified scheme.
Solution Approach 2:
The patent changes the parameters used for determination based on the other vehicle's speed. For vehicles with speed below a threshold, the system uses direction parameters (whether the vehicle is facing the target lane). For vehicles with speed above the threshold, the system uses distance parameters (distance from lane demarcation line). This parameter adaptation resolves the contradiction by selecting the most appropriate parameters for each speed condition.
2Ease of operation
If direction-based criteria are used for all speed ranges, then the determination is straightforward, but it fails to accurately capture lane change intent at higher speeds
Solution Approach 1:
The patent changes the determination parameters based on speed. For low-speed vehicles, direction parameters are used which are easy to determine from imaging data. For high-speed vehicles, the system switches to distance parameters from lane demarcation lines, which better capture lane change intent at higher speeds where vehicles may not significantly change orientation before changing lanes.
Solution Approach 2:
The system dynamically adapts the determination criteria based on the other vehicle's speed. The control device selects different determination schemes according to speed thresholds, making the determination process both easy (for low-speed cases) and accurate (for high-speed cases) by using appropriate parameters for each scenario.
3Measurement precision
If distance-based criteria are used for all speed ranges, then lane change detection at high speed is accurate, but it becomes difficult to detect early lane change intentions at low speed
Solution Approach 1:
The patent changes the detection parameters based on speed conditions. For low-speed vehicles, the system uses direction parameters that can detect lane change intent earlier, as vehicles tend to orient toward the target lane before moving. For high-speed vehicles, distance parameters are used which provide accurate detection of actual lane change execution. This resolves the contradiction by optimizing parameter selection for each speed regime.
Solution Approach 2:
For low-speed vehicles, the system detects preliminary actions (direction changes indicating intent to change lanes) before the actual lane change occurs. This allows early detection and appropriate response. For high-speed vehicles, the system focuses on detecting the actual lane change execution through distance measurements, ensuring accurate real-time detection.
4Measurement precision
If multiple determination schemes are implemented for different speed ranges, then the accuracy of intent determination is improved, but the control system becomes more complex
Solution Approach 1:
The patent implements a dynamic selection mechanism that chooses between multiple determination schemes based on the other vehicle's speed. The control device includes a selector that automatically switches between determination schemes for different speed ranges, managing the complexity through automated condition-based selection rather than requiring manual intervention or overly complex unified logic.
Solution Approach 2:
The determination system is segmented into multiple schemes based on speed ranges. Each segment (determination scheme) is optimized for specific speed conditions, with clear thresholds for switching between them. This segmentation allows each scheme to be relatively simple while the overall system achieves high accuracy through appropriate scheme selection for each operating condition.
Data Source
AI summary
A control device acquires a speed of another vehicle and a position of the other vehicle, selects a determination scheme according to the speed of the other vehicle from among a plurality of determination schemes, applies the position of the other vehicle to the selected determination scheme to determine whether the other vehicle enters a second lane adjacent to a first lane in which the other vehicle travels from the first lane, and controls the vehicle based on a result of the determination.