Top-Down Data Reader Calibration for Height Adjustment
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Solution Overview
Problem
Data reading systems with fixed top-down data readers lack flexibility and are limited in processing items of varying heights, as they require recalibration and have issues with aiming and depth of field after adjustments, restricting their adaptability to different workspace configurations.
Innovation Solution
A data reading system with a movable and adjustable top-down data reader that includes a post with telescopic sections for height adjustment and a calibration subsystem using reference labels and aiming aids to ensure proper orientation and focus, allowing for flexible positioning and accurate data capture across various item sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the top-down data reader is made height-adjustable and remotely mountable to increase flexibility, then adaptability to different workspace configurations is improved, but aiming and calibration issues arise after adjustment
Solution Approach 1:
The patent applies preliminary action by providing calibration instructions and reference materials before the data reader is actually used for scanning. The system includes calibration targets, alignment markers, and step-by-step calibration procedures that are prepared in advance and made available to the user through the user interface, allowing the user to properly calibrate the movable data reader before deployment.
Solution Approach 2:
The patent uses an intermediary approach by introducing a calibration subsystem that includes reference targets, alignment markers, and calibration instructions as mediators between the movable data reader and the scanning environment. These intermediaries facilitate the calibration process by providing reference points and guidance that help the user achieve proper alignment and focus without requiring specialized expertise.
2Adaptability or versatility
If the top-down data reader is made height-adjustable to process items of varying heights, then versatility is improved, but depth of field and focus calibration become problematic
Solution Approach 1:
The patent applies dynamics by making the data reader height-adjustable and remotely mountable, allowing it to adapt to different working distances and item heights. The movable mounting mechanism enables the data reader to be positioned at optimal distances for scanning items of varying sizes, transforming a static system into a dynamic one that can adapt to different scanning scenarios.
Solution Approach 2:
The patent uses parameter changes by allowing the working distance and mounting position to be varied. The system provides calibration instructions that guide users on how to adjust these parameters for different item types and scanning scenarios, enabling the data reader to maintain optimal depth of field and focus across a range of conditions.
3Measurement precision
If fixed position calibration is used for top-down data readers, then calibration accuracy is maintained, but flexibility and adaptability are reduced
Solution Approach 1:
The patent applies universality by creating a calibration system that works across multiple configurations and mounting positions. The calibration targets, alignment markers, and instructions are designed to be universally applicable whether the data reader is mounted remotely or adjusted to different heights, eliminating the need for configuration-specific calibration procedures.
Solution Approach 2:
The patent implements self-service by providing the user with all necessary calibration tools and instructions directly at the scanning location. The calibration targets and alignment markers are positioned in the scanning environment, and the step-by-step instructions guide the user through the calibration process without requiring external assistance or specialized equipment.
Data Source
AI summary
A data reading system including one or more imagers and a lower main housing structure with a horizontal surface and a horizontal window, across which items to be read are passed. At least one or more of the imagers in the data reading system is a part of a top-down data reader having a generally downwardly-facing field of view projecting through a scan window and onto the horizontal surface and the horizontal window. The top-down data reader may be freely repositioned at a range of height positions and angular configurations for processing items of various dimensions. The data reading system may further include a calibration system for assisting in adjusting the field of view of the top-down data reader to ensure proper aim and focus of the top-down data reader after adjustment.