Brake Control Using Front and Rear Preceding Vehicle Recognition
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Solution Overview
Problem
Conventional forward collision-avoidance assist (FCA) systems rely solely on rear feature points to determine if a preceding vehicle enters or deviates from the driving trajectory, leading to delayed brake system control and unnecessary braking interventions.
Innovation Solution
A brake system control device that collects both front and rear data of a preceding vehicle using cameras and optical sensors, allowing for the determination of the preceding vehicle's intervention or deviation from the driving trajectory, and subsequently controls the brake system accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the conventional FCA system uses only rear feature points to determine preceding vehicle position, then the system complexity is reduced, but the response speed of brake system control is delayed
Solution Approach 1:
The patent segments the preceding vehicle recognition into multiple feature points (front feature point and rear feature point) instead of using a single rear feature point. This segmentation allows the system to detect vehicle entry and deviation more accurately and quickly, improving response speed while maintaining manageable system complexity through structured processing of multiple data points.
Solution Approach 2:
The system performs preliminary action by collecting both front and rear feature points of the preceding vehicle in advance, before making the determination of entry or deviation. This preliminary data collection enables faster response when collision risk is detected, as the system already has comprehensive position information ready for immediate analysis.
2Ease of operation
If the conventional FCA system relies solely on rear feature points, then the measurement process is simpler, but unnecessary brake interventions occur
Solution Approach 1:
The patent applies local quality by using different feature points (front and rear) for different determination purposes. The front feature point is particularly useful for detecting vehicle entry into the trajectory, while the rear feature point helps confirm full presence or deviation. This localized use of different feature points improves the accuracy and reliability of collision risk determination.
Solution Approach 2:
The system implements feedback by continuously monitoring both front and rear feature points and using this information to verify whether the preceding vehicle has truly entered or deviated from the driving trajectory. This feedback mechanism reduces false positives and unnecessary brake interventions by confirming vehicle position changes through multiple data points.
3Measurement precision
If the FCA system collects both front and rear data of the preceding vehicle, then the determination accuracy is improved, but the data processing complexity increases
Solution Approach 1:
The patent segments the data collection and processing into distinct components: front feature point detection, rear feature point detection, and integrated analysis. This segmentation improves measurement precision by capturing comprehensive vehicle position information while managing data processing complexity through structured, modular processing steps for each feature point.
Solution Approach 2:
The system achieves universality by using the same camera and sensor infrastructure to collect both front and rear feature point data, rather than requiring separate specialized systems. This multi-functional use of existing sensors improves determination accuracy without proportionally increasing data processing complexity.
Data Source
AI summary
A method and device for controlling brake system based on preceding vehicle recognition are disclosed. The device comprising: a data collecting unit configured to collect front data and rear data of a preceding vehicle, a driving trajectory extracting unit configured to extract a driving trajectory of a lane in which the vehicle is traveling, a preceding vehicle analysis unit configured to determine driving information of the preceding vehicle, a preceding vehicle determining unit configured to determine intervention of the preceding vehicle or deviation of the preceding vehicle with respect to the driving trajectory, and a control unit configured to control the brake system.