Drive Assist Apparatus Collision Timing Prediction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional collision avoidance systems face difficulties in performing drive assist at proper timings due to fixed activation thresholds, which do not account for varying collision probabilities based on the moving direction of objects relative to the vehicle.
Innovation Solution
A drive assist apparatus that includes an object detection unit, moving direction detection unit, position prediction unit, and determination unit, which predicts collision positions and adjusts execution timing based on the moving direction and collision probability, allowing for timely intervention based on the likelihood of collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed activation thresholds are used for drive assist, then the system is simple to operate, but the drive assist cannot be executed at proper timings for different collision possibilities
Solution Approach 1:
The patent applies dynamics by making the activation threshold variable rather than fixed. The determination unit dynamically adjusts the activation threshold based on the predicted collision position and moving direction of the object. This allows the system to adapt the threshold in real-time according to the specific collision scenario, improving execution timing accuracy without requiring overly complex predefined rules for every possible situation.
Solution Approach 2:
The patent changes the parameter of activation threshold from a fixed value to a variable that depends on predicted collision position and object moving direction. By modifying this key parameter based on detected conditions, the system achieves more accurate drive assist execution timing while maintaining reasonable system complexity through the use of sensor-based input parameters.
2Reliability
If the same activation threshold is set for all predicted collision positions, then the system is easy to manufacture and implement, but it cannot account for different collision probabilities at different positions
Solution Approach 1:
The patent applies local quality by setting different activation thresholds for different predicted collision positions and object moving directions. Instead of using a uniform threshold globally, the system determines local thresholds based on the specific location where collision is predicted and the direction from which the object is approaching. This allows the system to account for varying collision probabilities at different positions while implementing a relatively simple position-based differentiation strategy.
3Productivity
If activation thresholds are adjusted based on moving direction and collision position, then drive assist execution timing is optimized, but the determination process becomes more complex
Solution Approach 1:
The patent applies preliminary action by having the position prediction unit predict the future collision position and the determination unit pre-determine the appropriate activation threshold before a collision actually occurs. By performing these calculations in advance based on current object position and moving direction, the system optimizes response efficiency without requiring complex real-time decision-making during critical moments.
Data Source
AI summary
The drive assist apparatus detects an object around an own vehicle, and detects a moving direction of the detected object when the detected object is relatively approaching the own vehicle. The drive assist apparatus predicts a movement prediction position to which the object will move, and executes drive assist upon the movement prediction position being a collision prediction position. The collision prediction position is a position where, if the object relatively moves to the movement prediction position, there is a possibility that the object will collide with the own vehicle. The drive assist includes at least one of a task of avoiding a collision between the object and the own vehicle, and a task of mitigating a damage due to the collision. The drive assist apparatus determines an execution timing of the drive assist as a function of the moving direction detected by the moving direction detection means, and the collision prediction position.