Lane-Change Assistant False Warning Reduction
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Solution Overview
Problem
Lane-change assistants face challenges in accurately determining whether a vehicle is on the adjacent lane due to error tolerances in sensor systems and lack of information about road lane widths, leading to false warnings and unclear situations, especially in curved roads.
Innovation Solution
Incorporating a determination module to identify the own vehicle's lane and using data from video systems, radar sensors, and navigation systems to determine lane positions and widths, enabling the decision module to make more reliable assessments about adjacent lane vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor systems with error tolerances are used to detect vehicles on adjacent lanes, then the system can operate without additional complex equipment, but false warnings increase and reliability decreases
Solution Approach 1:
The patent combines multiple data sources (sensor system, navigation system, road database) into a unified lane assignment system. The navigation system provides absolute position data that is merged with relative sensor data to accurately determine which lane the own vehicle occupies, thereby reducing false warnings without requiring complex additional hardware.
Solution Approach 2:
The patent introduces a lane assignment module as an intermediary that processes position data from the sensor system and navigation system. This module uses road lane information from the navigation system and database to mediate between raw sensor data and final lane-change decisions, improving reliability by filtering out false detections.
2Measurement precision
If video systems with electronic image evaluation are used to directly detect road markings, then lane position accuracy improves, but device complexity and cost increase
Solution Approach 1:
The patent makes the navigation system multi-functional by using it not only for route guidance but also for determining lane position. The same navigation system that provides directional information is also used to obtain absolute position data for lane assignment, eliminating the need for separate video detection systems.
Solution Approach 2:
Instead of using video systems to directly detect road markings, the patent uses the navigation system to obtain a digital copy of road lane information from databases. This virtual representation of lane data is then used for lane assignment without requiring physical visual detection.
3Reliability
If the system warns the driver in all uncertain cases, then safety increases, but false warnings increase and driver acceptance decreases
Solution Approach 1:
The patent performs preliminary lane assignment using navigation system data and road database information before making lane-change decisions. By pre-determining which lane the own vehicle occupies based on absolute position data, the system can confidently distinguish between real hazards and false detections, reducing false warnings while maintaining safety.
4Ease of manufacture
If the system assumes fixed lane widths, then processing simplifies, but accuracy decreases in curved roads and variable conditions
Solution Approach 1:
The patent makes the lane assignment system dynamic by continuously updating lane position based on the own vehicle's current absolute position from the navigation system. As the vehicle moves, especially on curved roads, the system dynamically recalculates lane assignment using real-time position data rather than relying on fixed geometric assumptions.
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
This approach significantly reduces false warnings and ensures that actual warnings are issued only when necessary, improving the reliability of lane-change assistant systems by accurately assigning vehicles to their respective lanes.
Implementation Method 1
a radar sensor which points to the rear or obliquely to the rear and is able to measure the distances, relative velocities and azimuth angles of the located vehicles
Data Source
AI summary
A lane-change assistant for motor vehicles, having a sensor system to locate vehicles on adjacent lanes in the rear space of the own vehicle, a decision module to decide whether a vehicle located in the rear space is on an immediately adjacent lane, and a driver interface to output the decision result, characterized in that a determination module is provided to determine the lane on which the own vehicle is traveling, and the decision module is designed to make the decision as a function of the result of the determination module.