Coordinated Distance Control and Lane Warning Systems
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Solution Overview
Problem
Current motor vehicle systems with distance-related speed control and lane departure warning systems operate independently, leading to potentially irritating and unpredictable vehicle reactions due to lack of coordination between them.
Innovation Solution
The motor vehicle integrates a distance-related speed control system and a lane departure warning system, where the duration of the turn signal effect time for both systems is coordinated to ensure harmonious operation, with the distance-shortening turn signal effect time and warning-suppressing turn signal effect time being equal in duration, preventing unnecessary warnings and ensuring smooth lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the distance-related speed control system shortens the target distance during turn signal effect time to enable quick lane changing, then the productivity of lane changing maneuver is improved, but the lane departure warning system may generate false warnings during this period
Solution Approach 1:
The system performs preliminary action by suppressing the lane departure warning before it can be triggered during the turn signal effect time. The coordination unit receives the turn signal activation signal and proactively disables the warning function for the duration of the turn signal effect time, preventing false warnings before they occur.
Solution Approach 2:
The coordination unit acts as an intermediary between the turn signal system and the lane departure warning system. It receives signals from the turn signal system and translates them into control actions for the warning system, mediating the interaction to ensure harmonious operation during lane changing maneuvers.
2Reliability
If the turn signal effect time for distance control is extended to ensure complete lane changing, then the reliability of distance control is improved, but the warning suppression period is also extended causing delayed warnings
Solution Approach 1:
The system changes the parameter of target distance dynamically based on the turn signal state. During turn signal effect time, the target distance is shortened to facilitate quick lane changing. After the turn signal effect time expires, the target distance is restored to the original value, ensuring complete distance control without permanent parameter changes.
3Ease of operation
If the target distance is shortened during turn signal effect time to simulate natural driving behavior, then the ease of operation is improved, but the target distance reset timing must be precisely coordinated with warning suppression
Solution Approach 1:
The coordination unit implements feedback by monitoring the turn signal effect time duration and using this information to control both the distance control system and the lane departure warning system. The turn signal effect time serves as a feedback parameter that synchronizes the operation of multiple systems, ensuring they return to normal state simultaneously.
Data Source
AI summary
A motor vehicle includes a distance related speed control system, wherein if the motor vehicle is following a vehicle driving in front, a target distance from the vehicle driving in front chosen by the driver is generally set, and wherein for a distance-shortening turn signal effect time when a turn signal is set, a shortened target distance is set. The motor vehicle further has a lane departure warning system, wherein a warning that is generally activated if there is a risk of an unintentional lane departure is suppressed for a specified warning-suppressing turn signal effect time after the setting of the turn signal. The warning-suppressing turn signal effect time begins simultaneously with the distance-shortening turn signal effect time, wherein these two turn signal effect times are specified to have the same length.