Adjacent-Lane Collision Avoidance with Intent-Based Brake Intervention
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Solution Overview
Problem
Existing vehicle collision avoidance systems fail to reliably prevent collisions with entities in adjacent lanes, particularly when drivers are distracted or misjudge the situation, especially when entering or exiting parking spots.
Innovation Solution
A vehicle collision avoidance system that scans adjacent lanes for target entities, evaluates their position and motion, and impends vehicle motion by applying brakes or reducing torque if a collision likelihood exceeds a threshold, based on vehicle state and driver intent, ensuring proactive collision prevention even if the driver is distracted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a scanning system detects target entities and the system applies brakes automatically, then collision avoidance reliability is improved, but the driver's operational freedom and ease of operation deteriorate
Solution Approach 1:
The system continuously monitors driver intent through steering angle, brake pedal, and accelerator pedal sensors, and adjusts its intervention level accordingly. When driver intent is clear, the system provides feedback by activating warnings or automatically applying brakes only when necessary, thereby maintaining reliability while preserving driver operational freedom through adaptive feedback control
Solution Approach 2:
The system dynamically adjusts its behavior based on real-time assessment of driver intent and collision risk. The brake activation threshold and intervention level are not fixed but adapt according to the detected driver state, allowing the system to be more permissive when the driver is attentive and more protective when distraction is detected, thus resolving the contradiction between reliability and ease of operation
2Reliability
If the system activates brakes to avoid collision with entities in adjacent lanes, then collision avoidance capability is improved, but the complexity of the braking control system increases
Solution Approach 1:
The braking system is designed to serve multiple functions: it can apply gradual brakes for gentle collision avoidance, activate strong brakes for immediate danger, and provide warning signals before intervention. This multi-functionality allows a single braking control system to handle various collision scenarios without requiring separate dedicated systems for each function, thereby improving collision avoidance capability while limiting the increase in system complexity
Solution Approach 2:
The system merges the scanning function, driver intent detection function, and brake control function into an integrated collision avoidance system. By combining these previously separate functions into a unified system with centralized control logic, the patent reduces overall system complexity while maintaining comprehensive collision avoidance capability across multiple scenarios
3Measurement precision
If the system scans adjacent lanes continuously and evaluates collision likelihood, then measurement precision of collision risk is improved, but the energy consumption and device complexity increase
Solution Approach 1:
The scanning system operates periodically rather than continuously, evaluating collision risk at regular intervals based on detected driver intent and target entity positions. This periodic operation maintains adequate measurement precision for collision risk assessment while significantly reducing energy consumption compared to continuous scanning, as the system only performs full evaluations when relevant conditions are detected
Solution Approach 2:
The system performs preliminary scanning and evaluation of adjacent lanes before actual collision risk arises. By continuously monitoring target entities in advance and assessing their trajectories, the system maintains high measurement precision for collision risk while optimizing energy consumption by only initiating full collision avoidance protocols when preliminary evaluation detects potential threats
Data Source
AI summary
An on-board system of a vehicle scans for target entities in at least one lane to a side of the vehicle and determines position and state of motion of detected target entities. From a state of the vehicle, an intention is inferred of a driver to move the vehicle into one of the at least one lane. If the on-board system detects a risk of collision between a target entity and the vehicle, then the motion of the vehicle is impeded by the system applying brakes of the vehicle and/or reducing a driving torque of the vehicle. A speed of the vehicle is monitored and a motion of the vehicle is not impeded if the speed of the vehicle is above a threshold speed.