Vehicle Door Regulation Apparatus with Vision Feedback
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Solution Overview
Problem
In the door installation process of a vehicle body transfer line, manually setting a door's step to zero for accurate gap/step measurement is inefficient and prone to errors, especially when dealing with various vehicle types with different door deviations.
Innovation Solution
A door regulation apparatus comprising a frame, a moving member with a clamping unit that uses vacuum absorption, a sensor to monitor vacuum pressure, and a vision photographing unit to automatically position the door at a reference point, ensuring a preset portion's step is zero through feedback control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual work is used to set the door step to zero, then the reference position can be established, but the process is inefficient and prone to errors
Solution Approach 1:
The patent replaces the manual mechanical operation of setting door step to zero with an automated vision-based detection system. The photographing unit captures images of the door, and the control unit automatically calculates and adjusts the door position based on image analysis, eliminating manual intervention and improving both efficiency and accuracy.
Solution Approach 2:
The system enables the door positioning process to be self-regulating through automatic feedback control. The control unit continuously monitors the door position via vision detection and automatically adjusts the door to maintain the correct reference position, making the system self-correcting without manual intervention.
2Reliability
If manual work is used to set the door step to zero, then the reference position can be established, but the process is prone to errors
Solution Approach 1:
The patent replaces error-prone manual operations with an automated vision-based detection and control system. The photographing unit captures precise images, and the control unit automatically processes these images to determine door position and make necessary adjustments, eliminating human error and improving reliability.
Solution Approach 2:
The system implements automatic feedback control where the control unit continuously receives visual information about door position, compares it with the target reference position, and automatically adjusts the door to eliminate any deviation. This closed-loop feedback mechanism ensures high reliability and consistency in establishing the reference position.
3Productivity
If automatic positioning is implemented, then productivity and accuracy are improved, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it processes images from the photographing unit, calculates door position, determines the reference position, and controls the regulation mechanism. By consolidating these functions into a single intelligent control unit, the system achieves high productivity without proportionally increasing overall system complexity.
Solution Approach 2:
The patent introduces a photographing unit as an intermediary that captures visual information about the door position. This intermediary converts physical door position into image data that the control unit can easily process, simplifying the overall control architecture while enabling automatic positioning and improving productivity.
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
This solution enhances the accuracy and speed of gap/step measurement by automatically positioning the door and maintaining a zero step at the preset portion, accommodating various vehicle types with different door deviations.
Implementation Method 1
a vacuum pump that is connected to the vacuum suction cup and that forms a vacuum pressure between the skin surface of the door and the vacuum suction cup
Data Source
AI summary
A door regulation apparatus positions a door mounted in a freely rotatably state in a vehicle body at a reference position in a gap/step measuring process, makes a step of a preset portion of the door to zero, and includes: i) a frame installed outside of a vehicle body transfer line; ii) a moving member reciprocating in the frame through a driving unit; iii) a clamping unit installed in the moving member vacuum adsorbs a skin surface of the door; iv) a sensor installed in the clamping unit senses a vacuum pressure operating at the skin surface; v) a vision photographing unit installed in the moving member photographs a preset portion of the door; and iv) a control unit analyzes and processes a sensing signal from the sensor and vision data that acquires from the vision photographing unit to control the driving unit.