Vehicle Door Control Device Obstacle Detection
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Solution Overview
Problem
Existing vehicle opening and closing body control devices may lose detection of obstacles due to changing positional relationships between obstacle sensors and obstacles during the opening operation, leading to potential contact between the opening body and obstacles.
Innovation Solution
A vehicle opening and closing body control device with a control unit that sets a target stop position based on the distance to an obstacle before operation, using a detection unit to continuously monitor obstacles and adjust the opening speed of the opening and closing body, ensuring it stops near the obstacle even if detection is lost during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the obstacle sensor uses ultrasonic wave reflection detection, then the obstacle can be detected before operation starts, but the detection may be lost during operation due to changing positional relationships
Solution Approach 1:
The control unit sets a target stop position in advance based on the initial obstacle detection result before the opening operation starts. This preliminary action ensures that even if the obstacle is not detected during operation due to positional changes, the opening and closing body will still stop at the appropriate position near the obstacle.
2Productivity
If the opening and closing body operates at high speed, then the operation efficiency is improved, but the safety margin for obstacle avoidance is reduced
Solution Approach 1:
The target stop position is determined in advance before high-speed operation begins, allowing the system to maintain safety margins while operating at high speeds. The body travels quickly to the predetermined position and then stops, combining speed with safety.
Solution Approach 2:
The control unit continuously monitors obstacle detection during operation and can adjust the stopping position or speed based on real-time feedback, ensuring safety even during high-speed operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures accurate and safe operation of the opening and closing body by maintaining control over the opening speed and position, preventing contact with obstacles and improving positional accuracy during opening and closing operations.
Implementation Method 1
the obstacle sensor detects a reflected wave of an ultrasonic wave emitted to rear of the back door
Data Source
AI summary
A vehicle opening and closing body control device includes: a control unit configured to control an opening and closing body drive device that drives an opening and closing body of a vehicle, and to cause the opening and closing body to open and close based on an operation request; a detection unit configured to detect an obstacle present around the opening and closing body based on a detection result of an obstacle sensor; and a setting unit configured to set a target stop position that is a position where the opening and closing body is near the obstacle based on a distance from the opening and closing body to the obstacle before operation of the opening and closing body is started. The control unit causes the opening and closing body to stop at the target stop position when the target stop position is set.