Scanning Module Position Calibration in Multifunction Peripherals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional multifunction peripherals face issues with noise, motor gear abrasion, and prolonged calibration times due to inaccurate position calibration of the scanning module, especially after power interruptions, leading to potential collisions and reduced device lifespan.
Innovation Solution
A position-calibrating method and apparatus that utilize a scanning platform divided into zones with a datum line, a recording unit, and a controlling unit to monitor and record the scanning module's position, determining the correct moving direction to avoid collisions and efficiently calibrate the module, thereby preventing noise and abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the scanning module is moved to perform position calibration after power interruption, then the calibration operation is executed, but the module may collide with edges causing noise and gear abrasion
Solution Approach 1:
The system performs preliminary detection of the scanning module's current position before initiating calibration movement. By detecting whether the module is within a safe distance from the first edge, the system determines the appropriate calibration direction, preventing collisions and harmful effects before they occur.
Solution Approach 2:
The system uses feedback from position detection to dynamically adjust calibration behavior. The detection unit provides real-time position information, and the control unit uses this feedback to select the appropriate moving direction (first or second direction), ensuring safe calibration operation that avoids collisions.
2Measurement precision
If the scanning module performs full-range calibration movement, then position calibration is completed, but the calibration time is prolonged
Solution Approach 1:
Instead of always performing a full-range calibration movement, the system performs only the necessary partial movement required to achieve calibration. By detecting the module's current position and calculating the minimal required displacement, the system completes calibration with reduced travel distance, thereby reducing calibration time while maintaining accuracy.
Solution Approach 2:
The system dynamically changes the calibration parameters (movement distance and direction) based on the detected current position. When the module is already close to the first edge, the system adjusts the calibration parameters to perform a shorter calibration stroke, optimizing the balance between calibration accuracy and time consumption.
Data Source
AI summary
A multifunction peripheral includes a scanning platform, a scanning module, a recording unit and a controlling unit. The scanning platform includes a standby position, a position-calibrating structure and a datum line. The scanning platform is divided into a first zone and a second zone by the datum line. The position-calibrating structure is included in the second zone. The scanning module is movable with respect to the scanning platform for performing a scanning operation. The recording unit is used for recording a parameter associated with a position of the scanning module with respect to the scanning platform. The controlling unit is used for controlling movement of the scanning module according to the parameter recorded in the recording unit, so that the scanning module is moved through the position-calibrating structure to perform a position-calibrating operation. After the position-calibrating operation is completed, the scanning module is moved to the standby position.