Vehicle Object Recognition Device Dynamic Position Range Adjustment
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Solution Overview
Problem
Existing object recognition devices for vehicles face delays in control due to the need for repeated detection to confirm that radar and camera-detected objects are the same, especially after detection interruptions.
Innovation Solution
An object recognition device that uses a radar and a camera to detect objects, with an identical object recognition unit that reduces the position range or time when detection is resumed after interruptions, allowing for rapid and accurate recognition by adjusting the matching criteria based on previous object data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection is continued multiple times to confirm object identity after interruption, then the recognition accuracy is improved, but the control delay increases
Solution Approach 1:
The patent applies dynamics by making the position range and determination period variable rather than fixed. When detection is interrupted and restarted, the system dynamically reduces the position range and determination period to enable faster recognition. When detection continues normally, the system uses the standard larger position range and determination period for accurate verification. This dynamic adjustment resolves the contradiction by adapting parameters to the detection state.
Solution Approach 2:
The patent changes the parameters of position range and determination period based on detection continuity. Upon detection restart after interruption, the system reduces these parameters to minimize recognition time. During continuous detection, the system maintains standard parameter values to ensure accurate object identity confirmation. This parameter change strategy allows the system to prioritize speed when needed while maintaining accuracy when conditions permit.
2Productivity
If the predetermined position range is reduced for rapid recognition after detection restart, then the control speed is improved, but the recognition accuracy may deteriorate
Solution Approach 1:
The system dynamically adjusts the position range based on detection continuity. After interruption and restart, the position range is reduced to a smaller value to enable rapid recognition and minimize control delay. During continuous detection operations, the position range is maintained at its standard larger value to ensure accurate object identity verification. This dynamic parameter adjustment resolves the contradiction between speed and accuracy.
Solution Approach 2:
The system performs preliminary recognition using the reduced position range immediately upon detection restart to quickly identify potential objects. This preliminary action provides rapid initial results, and if further verification is needed, the system can then expand the search range or perform additional verification steps. This preliminary action approach enables fast initial response while maintaining the option for accurate verification.
Data Source
AI summary
An object recognition device includes: a radar that detects objects in the vicinity of a vehicle a camera that detects objects by capturing an image of the vicinity of the vehicle an identical object recognition unit configured to recognize that an object detected by the radar and an object detected by the camera are the same object when the objects are present within a predetermined position range. The identical object recognition unit determines whether the objects are the same object by reducing the predetermined position range when detection using the radar device or the camera is interrupted and then detection is started again.