Vein-fingerprint-face composite recognition system with automatic light brightness control function

[0026] Example 1

[0027] Such as Figure 1 ~ Figure 2 As shown, the venous fingerprint and face composite recognition system of the present invention that can automatically control brightness includes a support frame 1, a vertical adjustment slot 2 is provided on the support frame 1, and a sliding block 3 is provided on the vertical adjustment slot 2. 3 can move along the vertical adjustment groove 2 or be fixed on the vertical adjustment groove 2, the sliding block 3 is provided with a mounting rod 4, the mounting rod 4 is provided with a horizontal adjustment groove 5, and the horizontal adjustment groove 5 is provided with a fixing device 6 , The fixing device 6 can move along the horizontal adjustment groove 5 or be fixed on the horizontal adjustment groove 5, the support frame 1 is also provided with a lighting device 10, the lighting device 10 is connected with a controller, and the function of the controller is to control the angle of the lighting device 10 And the light intensity can be controlled by common controllers on the market and corresponding control methods.

[0028] When in use, the support frame 1 is directly fixed on the wall, the sliding block 3 moves along the vertical adjustment slot 2, and the height position of the mounting rod 4 can be adjusted, and then the distance between the fixing devices 6 can be adjusted by moving the fixing device 6, Make the position of the fixing device 6 easy to install the vein recognition instrument. When installing, only need to determine the position of the support frame 1, and the positions of the mounting rod 4 and the fixing device 6 can be adjusted, which can avoid the inaccurate punch position and multiple punches. The hole makes the installation of the vein recognition instrument more convenient and the installation position more flexible; according to the light conditions of the external environment, adjust the angle and light intensity of the lighting device 10, so that the recognition effect of the vein fingerprint and face composite recognition system is better. Installed on the top of the support frame 1, the controller is a PLC controller, and is provided with a control program for controlling the angle and light intensity of the lighting device 10. The PLC controller is a common PLC controller on the market and adopts common control programs To achieve control, the control program can adjust the brightness of the lighting device 10 when the external brightness is insufficient, and when the angle of the lighting device 10 is not good, the angle of the lighting device 10 can be adjusted. The adjustment of the lighting device 10 can be manual or automatic. adjust.

[0029] Example 2

[0030] The present invention is based on Embodiment 1, and further illustrates the present invention.

[0031] Such as Figure 1 ~ Figure 2 As shown, the venous fingerprint and face composite recognition system of the present invention can automatically control the brightness. The support frame 1 can be fixed on the wall by threaded fasteners 9. The threaded fasteners are expansion screws, and the expansion screws are preferably metal expansion screws. , The fixing of the expansion screw uses the wedge-shaped slope to promote the expansion to produce frictional binding force to achieve the fixing effect. The expansion screw is composed of a screw and an expansion tube. The tail of the screw is cone-shaped. The inner diameter of the cone is larger than the inner diameter of the expansion tube. When tightening, the screw moves outwards, and the conical part moves through the axial movement of the thread. A large positive pressure is formed on the outer circumference of the expansion tube. In addition, the angle of the cone is small, so that the wall, expansion tube and cone Form friction self-locking between them, and then achieve a fixed effect.

[0032] Example 3

[0033] The present invention is based on Embodiment 1, and further illustrates the present invention.

[0034] Such as Figure 1 ~ Figure 2 As shown, the present invention can automatically control the brightness of the vein fingerprint face composite recognition system, the number of support frames 1 is two, and the mounting rod 4 is located between the two support frames 1, and the two ends of the mounting rod 4 are respectively located on the support frame 1, to make the mounting rod 4 move more stable, the mounting rod 4 can move along the vertical adjustment groove 2 on the support frame 1, thereby adjusting the position of the mounting rod 4, the fixing device 6 is a hook or a threaded fastener through a hook Or threaded fasteners fix the vein identification device on the mounting rod 4, and select different fixing devices 6 and their numbers according to the size and model of the vein identification device to achieve the best fixing effect.

[0035] The sliding block 3 is provided with a protrusion 7, and the vertical adjustment groove 2 is provided with a limiting groove 8. The protrusion 7 is fitted with the limiting groove 8, and the protrusion 7 can move along the limiting groove 8 to prevent the sliding block 3 from moving from The vertical adjustment groove 2 falls off.