Ultrathin vein identification device for door lock

Abstract

The invention discloses an ultrathin vein identification device for a door lock. The ultrathin vein identification device comprises a sealed cavity and a controller which is black inside and does not reflect. The upper part of the sealed cavity is provided with several near infrared light emitting diodes connected with the controller. A vein identification area provided on the sealed cavity is an inclined plane. The sealed cavity is provided with an oblique filter; and the vein identification area is provided with a finger trigger board, the finger trigger board and the controller phase are connected. A vertical reflector is arranged on the inner sidewall of the sealed cavity. The sealed cavity is provided with a camera. The camera is connected with the controller; the camera is located at the lower right side of the vertical reflector; the oblique filter, the vertical reflector, and the camera form an imaging path. The ultrathin vein identification device utilizes the principle of optics, extends the path of light, shortens the distance between the vein and the lens, and changes the direction of the finger placement to achieve the aim of miniaturizing and reducing the depth of the module, and is very suitable for door locks, safes and the like products.

Description

technical field [0001] The invention relates to the technical field of identification, in particular to an ultra-thin vein identification device used for door locks. Background technique [0002] Vein recognition, a type of biometrics. Vein recognition is a method of irradiating fingers with near-infrared rays, using CMOS or CCD lenses to obtain finger vein distribution maps, and extracting eigenvalues ​​from the vein distribution maps based on algorithms and storing them in the computer system to realize eigenvalue storage. During vein recognition, the finger vein distribution map is taken in real time, the features of the digital image are extracted by means of filtering, image binarization, and thinning, and the matching algorithm is used to compare and match with the vein feature values ​​stored in the host, so as to identify the individual. identifying. [0003] Finger vein identification technology, face recognition, fingerprint recognition, iris recognition, etc. al...

AI Technical Summary

Problems solved by technology

But both have their own insurmountable defects: markers are easy to be lost or forged, and marker knowledge is easily forgotten or misremembered; more seriously, these traditional identification methods are often unable to distinguish the real owner of markers Imposters who obtain tokens can have the same rights once others acquire these tokens

[0023] At present, the vein recognition equipment is quite large, which limits the promotion and application in more industries, such as door locks. Door locks hope to have smaller equipment; but according to the principle of vein imaging, the distance between the vein and the lens is required to be greater than the focal length, that is This limits further miniaturization of vein recognition devices

Images