Vehicle Obstacle Detection Range Switching by Travel Direction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing obstacle detection systems for vehicles often result in erroneous determination of obstacles, leading to unnecessary brake operation and prolonged parking times due to inappropriate setting of obstacle and support areas.
Innovation Solution
An obstacle detection device that includes an input interface, manipulation information acquisition, detection information acquisition, traveling direction determination, and obstacle determination units, which adjust the detection range based on the vehicle's traveling direction to prevent false obstacle detection and brake operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed detection range is set around the vehicle, then all areas are monitored for obstacles, but erroneous determination occurs in areas where there is little risk of contact and collision
Solution Approach 1:
The detection range is changed dynamically based on the vehicle's traveling direction. When the vehicle is traveling forward, the detection range is set to a first range; when traveling backward, it is set to a second range. This dynamic adjustment prevents erroneous obstacle determination in areas with low collision risk while maintaining comprehensive monitoring where needed, thereby improving detection accuracy without unnecessarily extending parking time.
Solution Approach 2:
Different detection ranges are applied to different traveling directions. The system sets a larger detection range in directions where collision risk is high and a smaller detection range in directions where collision risk is low. This local differentiation of detection quality prevents false obstacle detection in low-risk areas while maintaining high detection capability in high-risk areas.
2Reliability
If a large detection range is set to cover all possible obstacle areas, then obstacle detection coverage is improved, but false obstacle detection increases in low-risk areas
Solution Approach 1:
The detection range is adjusted dynamically according to the vehicle's traveling direction. When traveling backward, the detection range is reduced in areas where there is little risk of contact and collision, preventing false obstacle determination while maintaining adequate coverage for actual obstacles.
Solution Approach 2:
The system changes the detection range parameter based on the traveling direction. By switching between a first detection range (forward travel) and a second detection range (backward travel), the system optimizes the balance between detection coverage and determination accuracy for different operational contexts.
3Measurement precision
If the detection range is reduced to prevent false detection, then false obstacle determination decreases, but obstacle detection coverage in high-risk areas may be insufficient
Solution Approach 1:
The detection range is set to a first range when the vehicle travels forward and a second range when the vehicle travels backward. This dynamic adjustment ensures that the detection range is always appropriate for the current traveling direction, maintaining both determination accuracy and detection coverage.
Solution Approach 2:
The system applies different detection range qualities to different traveling directions. The detection range is optimized locally for each direction, ensuring sufficient coverage in high-risk areas while reducing false detection in low-risk areas.
Data Source
AI summary
An obstacle detection device includes a traveling direction determination unit configured to determine a traveling direction of an own vehicle based on acquired steering angle information and shift position information, and an obstacle determination unit configured to set a detection range as a predetermined range around the own vehicle, determines, when an object detected based on sensor data is positioned inside the detection range, the object as an obstacle that obstructs traveling of the own vehicle, and outputs a control signal for stopping the traveling of the own vehicle or decelerating the own vehicle. The obstacle determination unit changes the detection range based on a determination result of the traveling direction determination unit.