Foldable Fingerprint Capture Housing for Mobile Multi-Finger Scanning
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Solution Overview
Problem
Existing mobile fingerprint readers are not designed to accommodate multiple fingers simultaneously and require the control officer to maintain a fixed position relative to the device for comfortable operation, lacking protection for the finger support surface during transport.
Innovation Solution
A hand-held device with a modular design featuring an image acquisition module and a holding unit that can be folded to secure the display and operating module, allowing for adjustable angles between the support surface and display for comfortable operation and protection during transport, and compatibility with various smartphones through adapter sleeves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the device is designed to accommodate multiple fingers simultaneously, then the identification efficiency is improved, but the device size and complexity increase
Solution Approach 1:
The device is divided into separate functional modules: an image capture device for fingerprint acquisition, a display device for showing captured images, and a processing unit. This segmentation allows each component to be optimized independently while working together to achieve multi-finger capture capability without proportionally increasing overall complexity.
Solution Approach 2:
The support surface is designed to accommodate multiple fingers simultaneously, making the device capable of capturing multiple fingerprints in one placement. The image capture device and display device work together to provide both capture and verification functions, reducing the need for separate devices and simplifying the overall system.
2Reliability
If a cover is added to protect the finger support surface during transport, then the protection is improved, but the device complexity increases
Solution Approach 1:
The protective cover is integrated with the support surface structure, forming a unified component rather than a separate attachment. This merging of functions provides protection during transport while maintaining a simple, clean design without adding unnecessary complexity to the device architecture.
3Adaptability or versatility
If the device is designed for mobile operations, then the versatility is improved, but the stability of operation deteriorates
Solution Approach 1:
The device incorporates adjustable positioning mechanisms that allow the control officer to change the relative position and orientation of the device during operation. The support surface can be adjusted in height and angle, enabling the officer to maintain comfortable viewing positions while accommodating different operational scenarios and reducing strain.
Data Source
AI summary
A hand-held device for recording of living skin areas of human autopods and documents is disclosed. The device has an image acquisition module with a support surface and a holding unit for a display and an operating module. The holding unit contains a base frame and a folding frame, which are pivotably connected by a mechanical pivot joint. The image acquisition module is arranged in the base frame, with the support surface facing the folding frame, and the display and operating module can be arranged in the folding frame, with the display facing away from the base frame. In an opened state of the holding unit, the base frame and the folding frame enclose an angle of less than 90° and greater than 20° with each other. In a closed state of the holding unit, the image acquisition module can be covered by the display and operating module.