Vehicle Collision Prevention with Rear-Side Detection
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Solution Overview
Problem
Existing vehicle collision prevention systems fail to account for rear-side vehicles when a driver attempts to avoid a collision with a front vehicle, leading to potential collisions while changing lanes.
Innovation Solution
A method and apparatus that collect vehicle information to calculate critical times for collision, determine if a collision risk area is entered, and provide vehicle driving support based on the presence of rear-side vehicles and driver steering attempts, including full braking and steering assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system issues a warning when the traveling vehicle enters the collision risk area of the front vehicle and leads to collision avoidance using lateral control, then the front collision avoidance capability is improved, but the risk of collision with rear-side vehicles increases
Solution Approach 1:
The system applies preliminary anti-action by detecting the presence of rear-side vehicles before allowing steering operations. When a rear-side vehicle is detected, the system proactively suppresses steering commands and issues warnings to the driver in advance, preventing the harmful effect of rear-side collision before it can occur. This resolves the contradiction by anticipating and counteracting the potential harm caused by lateral collision avoidance maneuvers.
Solution Approach 2:
The system introduces an intermediary control mechanism that mediates between the driver's steering input and the vehicle's actual steering response. When a rear-side vehicle is present, this intermediary layer suppresses or modifies steering commands, allowing the system to maintain front collision avoidance capability while preventing rear-side collision risks. The intermediary acts as a buffer that reconciles the conflicting requirements of lateral maneuvering and rear collision prevention.
2Object-affected harmful factors
If the system suppresses steering and performs full braking when rear-side vehicles are present, then the safety against rear-side collision is improved, but the front collision avoidance effectiveness may be reduced
Solution Approach 1:
The system applies dynamics by making the collision avoidance strategy adaptive rather than fixed. Instead of always suppressing steering when rear vehicles are present, the system dynamically adjusts its response based on real-time conditions such as the distance to the front vehicle, the speed of the rear vehicle, and the severity of the collision risk. This allows the system to optimize between rear-side safety and front collision avoidance effectiveness in different scenarios.
Solution Approach 2:
The system changes parameters such as the threshold distances and time-to-collision values that trigger different avoidance strategies. By adjusting these parameters based on the presence and characteristics of rear-side vehicles, the system can fine-tune its response to maintain front collision avoidance effectiveness while ensuring rear-side safety. For example, it may lower the threshold for issuing warnings or suppress steering only when the rear vehicle is within a critical distance.
3Reliability
If the system performs steering support to perform steering avoidance when the traveling vehicle is beyond the braking avoidance section, then the collision avoidance capability is improved, but the risk of collision with rear-side vehicle increases
Solution Approach 1:
The system performs preliminary action by checking for the presence of rear-side vehicles before executing steering support maneuvers. When a rear-side vehicle is detected, the system issues a warning to the driver and suppresses automated steering support, preventing the harmful effect of rear-side collision before the steering maneuver is initiated. This preliminary check and suppression mechanism resolves the contradiction by ensuring that steering avoidance actions are only taken when safe.
Data Source
AI summary
An apparatus and a method for preventing a vehicle collision are provided. The method includes collecting, by a controller, vehicle information of a traveling vehicle and calculating a last point to brake time to collision, a last point to steer time to collision, a front collision warning time to collision, and time to collision based on the collected vehicle information. The controller confirms whether the traveling vehicle enters a collision risk area in which there is a collision possibility between the traveling vehicle and a front vehicle. A vehicle driving support is controlled based on a direction in which a rear-side vehicle is present and whether steering is attempted when the traveling vehicle enters the collision risk area, thereby minimizing the collision between the traveling vehicle and the front vehicle and rear-side vehicle.