Collision Determination Device Shielding State Adjustment
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Solution Overview
Problem
Existing collision determination devices struggle to accurately determine the probability of a collision with a moving object that appears from behind a shielding object in time, leading to increased false alarms and delayed detection.
Innovation Solution
A collision determination device equipped with collision determining, shielding determining, and setting changing means, which adjusts the time required for collision determination based on whether the moving object is in a shielded state, allowing for earlier detection when the object is shielded and reducing false alarms by prolonging the determination time when not shielded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the collision determination time is extended to accurately calculate the movement trajectory of the target object, then the measurement precision of collision probability is improved, but the response time for detecting target objects that appear from behind shielding objects increases
Solution Approach 1:
The patent applies dynamics by making the collision determination time flexible rather than fixed. The control unit dynamically adjusts the determination time based on the shielding state: using a shorter first determination time when the target object is in a shielded state (appearing from behind another object) and a longer second determination time when not shielded. This dynamic adjustment resolves the contradiction by adapting the measurement precision requirements to the actual risk level indicated by the shielding state.
Solution Approach 2:
The patent changes the time parameter of collision determination based on the shielding state of the target object. By setting different determination time parameters (first determination time for shielded objects, second determination time for non-shielded objects), the system achieves both early detection of emerging objects and accurate trajectory calculation for visible objects, thereby resolving the contradiction between speed and accuracy.
2Speed
If the collision determination is performed quickly to detect target objects appearing from behind shielding objects, then the response time is improved, but the false alarm rate increases due to insufficient trajectory calculation
Solution Approach 1:
The system dynamically adjusts the determination process based on the shielding state. When a target object is detected in a shielded state, the control unit performs a quicker first collision determination with shorter time consumption. When the object is not shielded, a more thorough second collision determination is performed. This dynamic approach maintains high speed for critical emerging objects while ensuring reliability for visible objects through proper trajectory calculation.
Solution Approach 2:
The patent changes the determination time parameter according to the shielding state to balance speed and reliability. By setting a shorter first determination time for shielded objects, the system achieves fast response without excessive false alarms, as the shielding state itself provides contextual information that reduces false positive risk. For non-shielded objects, a longer second determination time ensures accurate trajectory calculation and reliable false alarm suppression.
Data Source
AI summary
A collision determination device is mounted to an own vehicle and determines a probability of a collision with a moving object. The collision determination device determines whether or not an own vehicle will collide with a moving object that is detected within a captured image. The collision determination device determines whether or not the moving object is in a shielded state where at least a portion of the moving object is hidden behind another object or the moving object appears from behind another object. The collision determination device sets an amount of time required for the collision determining means to complete a determination related to the collision to a shorter amount of time when the moving object is in the shielded state, compared to when the moving object is not in the shielded state.