Dual-Mode Barcode Aimer with Flicker Control for Long-Range Scanning
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Solution Overview
Problem
Conventional barcode scanners face challenges in accurately aiming and decoding barcodes at extended ranges due to reduced visibility and precision, leading to errors and slower scanning speeds.
Innovation Solution
A scanner with dual modes: stable-aimer mode for near-field scanning and flicking-aimer mode for far-field scanning, using a laser source, sensors, and processors to determine distance and adjust laser emission based on field proximity, with stable beams for near-field and flickering beams for far-field to enhance visibility and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a conventional barcode scanner uses a stable laser beam for long range scanning, then the scanning range is extended, but the visibility and precision of the laser dot on the barcode is reduced
Solution Approach 1:
The patent applies periodic action by making the laser beam flicker or pulse at specific frequencies when scanning far-field barcodes. This periodic modulation of the laser beam creates a more visible and distinguishable dot pattern on distant barcodes, solving the visibility problem while maintaining the extended scanning range capability.
Solution Approach 2:
The patent implements dynamics by switching between different laser beam modes (stable vs. flickering) based on the detected distance to the barcode. The system dynamically adjusts the laser beam characteristics according to whether the target is in near-field or far-field, optimizing visibility and precision for each range condition.
2Device complexity
If a conventional barcode scanner uses a single scanning mode, then the device complexity is reduced, but the scanning accuracy at various distances deteriorates
Solution Approach 1:
The patent uses dynamics by implementing a dual-mode scanning system that automatically switches between near-field and far-field scanning modes based on distance detection. This dynamic adaptation allows the scanner to maintain high accuracy across different distances without requiring manually configured multiple devices.
Solution Approach 2:
The patent applies parameter changes by modifying the laser beam characteristics (stable vs. flickering) and scanning parameters according to the detected distance. The system changes operational parameters dynamically to optimize scanning accuracy for the specific range condition, resolving the contradiction between simplicity and precision.
3Area of stationary object
If a barcode scanner uses extended range scanning, then the scanning coverage is increased, but the scanning speed and efficiency are reduced
Solution Approach 1:
The patent uses periodic action in the form of flickering or pulsed laser beams for far-field scanning, which enhances the visibility of the target barcode at extended ranges. This allows the scanner to maintain higher scanning speeds by quickly identifying and acquiring barcodes that would otherwise be difficult to detect, thus improving overall productivity while maintaining extended coverage.
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
Enhances scanning efficiency by improving accuracy and speed at various distances, allowing for easier decoding of barcodes regardless of range.
Implementation Method 1
at least one laser source configured to emit laser beam onto a first target within a field of view (FOV)
Implementation Method 2
The barcode scanner consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals
Data Source
AI summary
A scanner comprising at least one laser source configured to emit laser beam onto a first target within a field of view (FOV). Further, one or more sensors are configured to determine a distance between the scanner and the first target within the FOV. Further, one or more processors are operationally coupled with the at least one laser source and the one or more sensors. Further, the one or more processors are configured to receive the distance from the one or more sensors. Further, the one or more processors are configured to compare the distance with a predefined threshold value to determine whether the first target is in far-field. Thereafter, the one or more processors are configured to operate the at least one laser source in a flicking-aimer mode on determining the first target is in far-field.