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Finger vein device for inhibiting sunlight interference

A technology of finger veins and sunlight, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of generation and formation affecting the accuracy of vein recognition

Pending Publication Date: 2021-06-22
深圳市鑫保泰技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention proposes a finger vein device that suppresses sunlight interference, and its purpose is to solve the problem that an external light source such as sunlight will affect the generation of vein images and thus the accuracy of finger vein recognition in the traditional technology when performing finger vein identification

Method used

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  • Finger vein device for inhibiting sunlight interference
  • Finger vein device for inhibiting sunlight interference
  • Finger vein device for inhibiting sunlight interference

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0018] refer to Figure 1-3 , a finger vein device for suppressing sunlight interference, comprising a device body 1, an accommodating chamber 2 penetrating outwards is opened in the device body 1, accommodating a living finger to be detected, located in the device body 1 at the top and bottom of the accommodating chamber 2 A near-infrared lamp 3 and a camera 4 are respectively installed, and the near-infrared lamp 3 outputs infrared light and the output direction is perpendicular to the accommodation cavity 2 and vertically points to the input end of the camera 4, wherein the camera 4 receives the near-infrared light, and the near-infrared lamp 3 points to the living...

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Abstract

The invention discloses a finger vein device for inhibiting sunlight interference, and relates to the technical field of finger vein devices. The device comprises a device body, and a containing cavity penetrating outwards is formed in the device body; a near-infrared lamp and a camera are respectively mounted in the device body at the top and the bottom of the accommodating cavity; the near-infrared lamp outputs infrared light, the output direction of the near-infrared lamp is perpendicular to the containing cavity, the near-infrared lamp perpendicularly points to the input end of the camera, and the camera receives the near-infrared light; and a touch head is mounted in the accommodating cavity. When finger vein recognition is carried out, the conductive spring is electrified and then contracts to pull the piston to slide so as to inflate the wrapping bag; after the distance between the wrapping bag and the finger living body is smaller than a certain threshold value, external sunlight is shielded; and then, the photosensitive sheet works to electrify the electrode wire so as to solidify the electrorheological fluid in the elastic pull tube, and the annular bottom keeps the shape under the traction and support of the elastic pull tube. Therefore, the device can greatly weaken the influence of external sunlight on finger vein image acquisition.

Description

technical field [0001] The invention relates to the technical field of finger vein devices, in particular to a finger vein device that suppresses sunlight interference. Background technique [0002] Finger vein recognition is a method to obtain the image features of the vein inside the finger for identification. Due to the absorption of infrared light by the flowing blood in the finger vein, the image vein is formed under the irradiation of infrared light, and through this image vein Identification is a feature that only exists when a person is alive, and it is difficult to falsify. Moreover, when using the finger vein for identity authentication, the image features of the acquired finger surface are not acquired, thereby avoiding recognition obstacles caused by the condition of the finger surface and the condition of the surface on which the device is placed. However, when performing finger vein identification, external light sources such as sunlight will affect the genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1171
CPCA61B5/1171
Inventor 刘桓茂刘桓裕
Owner 深圳市鑫保泰技术有限公司
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