QR Code Scanning Fixture With Auto Positioning and Light Shielding
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Solution Overview
Problem
Manual scanning guns and fixed code scanners face challenges in accuracy due to scanning distance, angle, and light interference, affecting production test efficiency when scanning QR codes on electronic products.
Innovation Solution
A scanning device with a rotating mechanism and adjustment mechanism, including a sensor and processor, that automatically positions and adjusts the scanner to ensure accurate scanning by rotating the workpiece and locking the scanner's angle and height, while using a contrasting color for improved recognition and a light shield to prevent external light interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual scanning guns or fixed code scanners are used, then the scanning process is simple to operate, but the scanning accuracy is low
Solution Approach 1:
The scanning device automatically adjusts the scanning head angle and height, and rotates the workpiece to the correct position without manual intervention. The system self-regulates the scanning parameters and workpiece orientation, eliminating the need for manual positioning while maintaining high scanning accuracy.
Solution Approach 2:
The device dynamically adjusts scanning parameters including the angle of the scanning head, height position, and workpiece rotation angle based on detection signals. These parameter changes enable the system to adapt to different scanning conditions and maintain optimal accuracy automatically.
2Measurement precision
If the scanning distance and angle are not properly controlled, then the device structure is simple, but the scanning accuracy deteriorates
Solution Approach 1:
The scanning device employs dynamic adjustment mechanisms that can change the scanning head angle and height position during operation. The workpiece rotation mechanism also dynamically adjusts the workpiece orientation. These dynamic adjustments ensure optimal scanning conditions are maintained without requiring a complex fixed structure.
Solution Approach 2:
The device uses a sensor to detect the QR code position and provides feedback to the control system. Based on this feedback, the system automatically adjusts the scanning parameters and workpiece position, creating a closed-loop control system that maintains accuracy without excessive structural complexity.
3Measurement precision
If external light interference is present, then the scanning environment is open and accessible, but the scanning accuracy decreases
Solution Approach 1:
The device converts the potential harmful effect of external light into a useful function by using a light shield that guides ambient light to illuminate the QR code from an optimal angle. This transforms light interference into a beneficial illumination source that enhances scanning accuracy.
Solution Approach 2:
The light shield acts as an intermediary element between the external environment and the QR code. It filters and directs light to provide optimal illumination for scanning while blocking harmful light interference, thus mediating the interaction between environmental light and the scanning target.
4Measurement precision
If the QR code placement angle varies, then the device can handle diverse placements, but the scanning accuracy is reduced
Solution Approach 1:
The workpiece rotation mechanism dynamically adjusts the workpiece angle to the optimal scanning position regardless of its initial placement. The scanning head angle and height are also dynamically adjustable to adapt to different QR code positions and orientations, maintaining high accuracy across varied placements.
Solution Approach 2:
The system changes multiple parameters simultaneously including workpiece rotation angle, scanning head angle, and height position to compensate for varied QR code placements. These parameter adjustments enable the device to maintain scanning accuracy whether the QR code is placed at 0 degrees or other angles.
Data Source
AI summary
A scanning device includes a scanner, a fixing seat, a sensor, and a processor. The fixing seat is provided with a positioning groove for fixing a position of a workpiece. The sensor senses whether the workpiece is on the fixing base. The processor is communicatively coupled to the scanner and the sensor and used for receiving signals from the sensor and sending instructions to the scanner. If the sensor senses the workpiece on the fixing base, the processor controls the scanner to scan an identification code on the workpiece. If the sensor does not sense the workpiece on the fixing base, the processor controls the scanner to stop scanning.