CCD-image-sensor-based fingerprint module appearance detection device

Abstract

The invention discloses a CCD-image-sensor-based fingerprint module appearance detection device, comprising a base, a support frame mounted on the base, an X-direction transmission device and a Y-direction transmission device. The support frame consists of a left standing column, a right standing column, and a horizontal column. The left standing column and the right standing column are fixedly arranged at the two sides of the upper surface of the base respectively; the X-direction motor is arranged at one end of the base opposite to the material inlet with a carrying plate with sliding blocks at the lower surface fixedly connected with the X-direction crew nut; the sliding blocks are embedded into two X-direction guide rails respectively; the front-end connection part and the back-end connection part comprise an annular base and a connection half-ring fixedly arranged on the annular base end face; and one back side face is provided with a flexible plate with sliding blocks and the flexible plate is fixedly connected with the Y-direction screw nut; and the sliding blocks are embedded in two Y-direction guide rails respectively. The camera support is provided with a plurality of guide column through holes for guide columns to penetrate. The plurality of guide columns penetrate the guide column through holes respectively and are fixedly connected with the upper surface of a light source. According to the invention, it is possible to effectively prevent the damage and deformation caused by the off centering and the errors of the motor output shaft and the screw rod, therefore, increasing the operation precision of the detection mechanism and ensuring the reliability for product detection.

Description

technical field [0001] The invention relates to a fingerprint module appearance detection device based on a CCD image sensor, and relates to the technical field of detection. Background technique [0002] In the prior art, the detection of the chamfer of the fingerprint ring is mostly through manual measurement, and the detection method is to use strong light to irradiate the parts to be detected, and then detect and distinguish through human eyes. The inspection rate is high, and the strong light is easy to affect the eyesight of the inspectors. In addition, it is also possible to calculate the chamfer of the fingerprint ring after taking pictures with the camera, but in the process of taking pictures, the edge of the fingerprint ring is difficult to determine, so there are certain errors in the calculated chamfer of the fingerprint ring. In view of the above problems, in order to meet the needs of industrial production, it is necessary to develop a fully automatic testing...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a fingerprint module appearance detection device based on a CCD image sensor. The fingerprint module appearance detection device can quickly detect by taking photos at a high speed, and solve the problems of slow detection and missed detection in the current human eye detection. High detection rate and easy to cause harm to the health of testing personnel, high detection efficiency, stable detection results and no detection errors, saving manpower and greatly reducing costs

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