Line Scan Camera Speed Synchronization for Chassis Imaging
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Solution Overview
Problem
Line scan cameras capture images of moving objects with deformation due to non-uniform speeds, resulting in stretched or compressed images, which affects their utility.
Innovation Solution
A method and device that measure the speed of an object and adjust the line frequency of the line scan camera to match the object's speed, ensuring accurate image capture by calculating the number of pixels traveled per unit time and determining the appropriate line frequency for image capturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a line scan camera captures images of a moving object with a fixed line frequency, then the camera can continuously scan the object, but the images become stretched or compressed when the object moves at non-uniform speed
Solution Approach 1:
The patent applies the Dynamics principle by making the line frequency of the line scan camera variable rather than fixed. The control unit dynamically adjusts the line frequency based on the measured speed of the moving object, allowing the camera to adapt its scanning rate to match the object's motion. This resolves the contradiction by enabling continuous scanning (maintaining productivity) while preventing image deformation (maintaining geometric accuracy) through real-time parameter adjustment.
Solution Approach 2:
The patent implements the Parameter changes principle by modifying the line frequency parameter of the line scan camera according to the object's speed. The control unit receives speed information from the speed measurement unit and相应地 changes the line frequency parameter to match the object's motion characteristics. This allows the system to maintain both continuous scanning capability and image geometric accuracy by adjusting the key operational parameter (line frequency) based on actual conditions.
2Ease of operation
If the line scan camera uses a fixed line frequency, then the camera operation is simple, but it cannot accurately capture images of objects moving at varying speeds
Solution Approach 1:
The patent applies theSelf-service principle by enabling the line scan camera system to automatically adjust its own line frequency based on feedback from the speed measurement unit. The control unit within the system autonomously determines the appropriate line frequency by comparing the measured object speed with the current camera settings, and self-corrects any mismatch without external intervention. This maintains ease of operation while achieving accurate image capture of objects at varying speeds.
Solution Approach 2:
The patent implements the Feedback principle by creating a closed-loop control system where the speed measurement unit continuously monitors the object's speed and provides feedback to the control unit. The control unit uses this feedback information to adjust the line frequency of the line scan camera, ensuring that the camera's scanning rate matches the object's motion. This feedback mechanism resolves the contradiction by maintaining operational simplicity while achieving precise image capture through automatic adaptation.
3Manufacturing precision
If the line frequency is adjusted to match object speed, then image deformation is eliminated, but the system complexity increases due to speed measurement and control units
Solution Approach 1:
The patent applies theUniversality principle by designing the control unit to perform multiple functions: it receives speed information from the speed measurement unit, calculates the appropriate line frequency based on the object's speed, and controls the line scan camera's scanning operation. By consolidating these functions into a single control unit, the system achieves accurate image capture without proportionally increasing complexity. The control unit serves as a multi-functional component that coordinates the entire system while eliminating image deformation.
4Manufacturing precision
If a speed measurement unit is added to detect object speed, then the line frequency can be adjusted to eliminate image stretching, but the device complexity and cost increase
Solution Approach 1:
The patent applies theIntermediary principle by introducing the control unit as a mediator between the speed measurement unit and the line scan camera. The control unit receives speed information from the measurement unit, processes this information to determine the appropriate line frequency, and transmits control signals to the camera. This intermediary component enables the system to achieve accurate image capture while managing complexity by centralizing the control logic and coordination functions in a single mediating unit.
Data Source
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AI summary
Embodiments of a method and device for controlling image capturing and a system for acquiring an image of a chassis of a vehicle are provided, which relate to image capturing technology and can eliminate deformation of images occurred due to stretch or compression in image capturing. The system includes a speed measuring module, a control module, and a line scan camera. The speed measuring module measures the speed of the vehicle and transmits the measured speed of the vehicle to the control module. The control module determines line frequency for image capturing according to the speed of the vehicle, and controls the line scan camera to perform image capturing on the chassis of the vehicle with the line frequency.