Brake Timing Control for Lateral Collision Avoidance
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Solution Overview
Problem
Existing collision avoidance systems often operate brakes at an unduly early timing when detecting lateral moving objects, leading to inefficient collision avoidance.
Innovation Solution
A collision avoidance apparatus that calculates the operation timing of brakes based on the passing-through period of the lateral moving object and the reaching period of the own vehicle, ensuring brakes are applied at an appropriate timing to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brakes are operated early upon detecting lateral moving objects, then collision avoidance reliability is improved, but brake operation timing becomes premature reducing system efficiency
Solution Approach 1:
The system performs preliminary calculations of the passing-through period and reaching period to determine the optimal brake operation timing in advance, rather than reacting immediately upon detection. This allows the system to prepare for collision avoidance while maintaining efficient timing.
Solution Approach 2:
The system continuously monitors the lateral moving object's position and calculates real-time passing-through period and reaching period, using this feedback to dynamically adjust brake operation timing. This ensures both reliability and optimal timing by responding to actual conditions.
2Productivity
If brakes are operated at optimal timing based on passing-through period and reaching period calculations, then system efficiency is improved, but collision avoidance reliability may be compromised if calculations are inaccurate
Solution Approach 1:
The system calculates both the passing-through period and reaching period, using these partial time measurements to determine the optimal brake operation timing. By combining multiple time parameter calculations, the system achieves efficient timing while maintaining reliability through comprehensive analysis.
Data Source
AI summary
A collision avoidance apparatus includes a travelling state calculation section, a target detection section, a target state calculation section, a lateral moving object determination section, a collision determination section, and a collision avoidance control section. The collision avoidance control section calculates, based on (i) a passing-through period of the lateral moving object in which the lateral moving object passes through an own vehicle course that is a moving course of the own vehicle and (ii) a reaching time of the own vehicle that is a period remaining before the own vehicle reaching a lateral moving object course that is a moving course of the lateral moving object, an operation timing of the brakes for the lateral moving object passing through the own vehicle course before the own vehicle reaches the lateral moving object course, and operates the brakes at the calculated operation timing of the brakes.