Lane Change Detection via Acceleration and Distance Monitoring
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Solution Overview
Problem
Conventional methods for detecting a fellow vehicle's lane change in a vehicle's environment are often unreliable and fail to provide early warnings, especially at high speeds, due to reliance on directional indicators and lateral velocity monitoring, which can lead to critical situations.
Innovation Solution
A method involving repeated monitoring of a fellow vehicle's speed and distance using sensor devices like radar, lidar, or ultrasound, combined with analysis by a control unit to detect acceleration and changes in distance, allowing for early and reliable detection of lane changes by comparing these parameters with defined limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If directional indicator monitoring is used to detect lane changes, then detection can be performed, but reliability is reduced because lane changes are often carried out without directional indicators
Solution Approach 1:
The patent introduces an intermediary detection method by monitoring the fellow vehicle's acceleration and lateral position changes as intermediate indicators of intended lane change behavior. Instead of directly detecting the lane change execution, the system detects preparatory actions (acceleration patterns and position shifts) that precede the actual lane change, providing earlier and more reliable detection without relying on directional indicators.
2Loss of time
If lateral velocity monitoring is used to detect lane changes, then detection can be performed, but detection occurs only shortly before the fellow vehicle enters the vehicle's lane, leading to critical situations
Solution Approach 1:
The patent applies preliminary action by detecting lane change intentions before the actual lane change execution. The system monitors acceleration patterns and lateral position changes that occur during the driver's decision-making phase, allowing the safety system to prepare and respond before the fellow vehicle actually enters the ego vehicle's lane, thereby eliminating the critical time delay.
3Measurement precision
If monitoring frequency is increased to improve detection accuracy, then detection precision improves, but system complexity and computational load increase
Solution Approach 1:
The patent changes the monitored parameters from direct lateral velocity (which requires high-frequency sampling) to acceleration patterns and lateral position changes. This parameter transformation allows for lower monitoring frequencies while maintaining detection accuracy, as acceleration and position trends can be reliably measured at lower rates compared to instantaneous velocity calculations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables early and reliable detection of lane changes, enhancing safety by providing timely warnings and improving the performance of systems like adaptive cruise control and brake assist.
Implementation Method 1
Sensing of environmental data of an environment of the vehicle by at least one sensor device, wherein a fellow vehicle is detected... using sensor devices like radar, lidar, or ultrasound
Implementation Method 2
using sensor devices like radar, lidar, or ultrasound
Implementation Method 3
using sensor devices like radar, lidar, or ultrasound
Data Source
AI summary
A method for detecting a possible lane change of a fellow vehicle in the environment of a vehicle, wherein the vehicle is located in a first lane, is provided. A system is also provided having a control unit and at least one sensor device for detecting a possible lane change of a fellow vehicle in the environment of a vehicle, wherein the vehicle is located in a first lane. Furthermore, a vehicle is provided having a system for detecting a possible lane change of a fellow vehicle in the environment of the vehicle, as well as a computer program product for detecting a possible lane change of a fellow vehicle in the environment of a vehicle.