CN206818899U - A kind of lens for paper money discrimination and the guiding against false of paper currency device based on the lens - Google Patents

Abstract

The utility model discloses a kind of lens for paper money discrimination and the guiding against false of paper currency device based on the lens, the lens have bottom surface and top surface, wherein top surface is Cylinder Surface, bottom surface is divided into three parts, including the sphere positioned at bottom surface both ends and the Cylinder Surface among bottom surface, light is injected from the side of lens body bottom surface, and after lens reflect, square focus spot is formed in the opposite side of lens body.The invention also discloses the guiding against false of paper currency device based on the lens.The utility model lens can form square focus spot, and false proof device judges the true and false of bank note by the way that square focus spot color value is reflected into sensor, overcomes the attenuation problem of color signal, improves discriminating precision.

Description

A kind of lens for paper money discrimination and the guiding against false of paper currency device based on the lens

Technical field

The utility model belongs to paper money discrimination field, more particularly to a kind of lens for paper money discrimination and saturating based on this The guiding against false of paper currency device of mirror.

Background technology

Automatic vending machine reduces the cost manually sold.Japan, the population in the U.S. are far smaller than China, but they are each Country has four or five million vending machines runing, and the country is less than 300,000 in the vending machine quantity of operation at present.With Expanding economy, cost of labor meeting more and more higher, the advantage being sold is made of automatic vending machine can be more and more obvious.

Vending Machine can identify the denomination and the true and false of bank note by Paper currency identifier.At present, Paper currency identifier is usual Color sensor is coordinated to carry out color differentiation and false distinguishing using the transmission mode of light, its operation principle is：Sent out with luminescent device The specific region of the laser irradiation bank note of specific wavelength is penetrated, the laser transmission signal in this region is detected with receiving device, according to saturating Penetrate the true and false that signal judges bank note.Because light needs to be transmitted to the color sensor on opposite by bank note, color sensor connects The color signal value decay received is bigger, is unfavorable for the differentiation and false distinguishing of color.

Utility model content

The technical problem that the utility model solves is to provide a kind of lens for paper money discrimination and based on the lens Guiding against false of paper currency device, formed square focus spot simultaneously corresponding color value is reflected to sensor.

The technical solution for realizing purpose of utility model is：A kind of lens for paper money discrimination, it is characterised in that bag Lens body is included, the lens body has bottom surface and top surface, and wherein top surface is Cylinder Surface, and bottom surface is divided into three parts, including Cylinder Surface positioned at the sphere at bottom surface both ends and among bottom surface, is smoothly connected between sphere and Cylinder Surface, light from The injection of lens body bottom surface, after lens reflect, square focus spot is formed at the top of lens body.

Guiding against false of paper currency device based on the lens, including white light, color sensor, light shield, ultraviolet light, governor circuit Main control board is set below plate and lens, wherein lens, white light, color sensor and purple light are set on the circuit board Lamp, white light and ultraviolet light are symmetricly set on color sensor both sides, and the color sensor is located on the optical axis of lens, color Sensor surrounding is provided for preventing the light shield that white light and ultraviolet light disturb.

The utility model compared with prior art, its remarkable advantage：The utility model lens forming square focus spot, anti-camouflage Put by the way that square focus spot color value is reflected into sensor to judge the true and false of bank note, overcome the attenuation problem of color signal, Improve discriminating precision.

Brief description of the drawings

Fig. 1 is the structural representation of lens of the present utility model.

Fig. 2 is the fundamental diagram of the white light of the utility model device.

Fig. 3 is the fundamental diagram of the ultraviolet light of the utility model device.

Embodiment

A kind of lens for paper money discrimination, including lens body 6, the lens body 6 has bottom surface and top surface, wherein pushing up Face is Cylinder Surface, and bottom surface is divided into three parts, including the sphere positioned at bottom surface both ends and the Cylinder Surface among bottom surface, It is smoothly connected between sphere and Cylinder Surface, light is from the injection of the bottom surface of lens body 6, after lens reflect, in lens sheet Square focus spot is formed on the top of body 6.

The lens body is axially symmetric structure.

The both ends of lens body 6 are provided for fixing the fixed support 7 of lens.

Guiding against false of paper currency device based on the lens, including white light 1, color sensor 2, light shield 3, ultraviolet light 4, master control Main control board 5 is set below circuit board 5 and lens, wherein lens, white light 1, color sensor are set on the circuit board 5 2 and ultraviolet light 4, white light 1 and ultraviolet light 4 be symmetricly set on the both sides of color sensor 2, the color sensor 2 is located at lens Optical axis on, the surrounding of color sensor 2 is provided for preventing the light shield 3 that white light 1 and ultraviolet light 4 disturb.

The guiding against false of paper currency device is located in bank note coin passage 8, and lens are located at the bottom of bank note coin passage 8.

The utility model lens and false proof device improve the discriminating precision of bank note.

Technical solutions of the utility model are elaborated below in conjunction with the accompanying drawings.

Embodiment 1：

As shown in figure 1, the lens for paper money discrimination include lens body 6 and are arranged on the fixation at the both ends of lens body 6 Support 7, the lens body 6 have bottom surface and top surface, are axially symmetric structure, and the top surface is Cylinder Surface, and the bottom surface is divided For three parts, including the sphere positioned at bottom surface both ends and the Cylinder Surface among bottom surface, between sphere and Cylinder Surface It is smoothly connected, light is injected from the bottom surface of lens body 6, and after lens reflect, square light is formed at the top of lens body 6 Spot.

As shown in Fig. 2 and Fig. 3 institutes, the guiding against false of paper currency device based on the lens, including white light 1, color sensor 2, screening The side of light shield 3, ultraviolet light 4, main control board 5 and lens, wherein lens base sets main control board 5, the circuit board 5 Upper setting white light 1, color sensor 2 and ultraviolet light 4, the color sensor 2 are located on the optical axis of lens, and its surrounding is set For the light shield 3 for preventing white light 1 and ultraviolet light 4 from disturbing, the white light 1 and ultraviolet light 4 are symmetrical on the optical axis of lens. The distance between white light 1 and ultraviolet light 4 and color sensor 2 as far as possible small.

Operation principle：Guiding against false of paper currency device is located in bank note coin passage 8, and lens are located at the bottom of bank note coin passage 8, When main control board 5, which has detected bank note, passes through lens area, the source of white light 1 is first connected, now white light 1 launches white Light, white light reach the bottom surface of lens along light path 9,10 and 11 directions (as shown in 9 in Fig. 2,10,11 numbering dotted lines), The rectangular light spots region 13 of a white light, the white light warp in rectangular light spots region 13 are formed on bank note after lens reflect Cross bank note and reflex to top surface up to lens, then after the refraction of lens, along the reflection light direction 12 of white light (in such as Fig. 2 12 numbering dotted lines shown in) reflex on color sensor 2, the light signal of white light is received by color sensor 2.

Then, main control board 5 connects the power supply of ultraviolet light 4 again, and ultraviolet light 4 launches violet ray, and violet ray is along light The direction (as shown in 14 in Fig. 3,15,16 numbering dotted lines) on road 14,15 and 16 reaches the bottom surface of lens, after lens reflect The rectangular light spots region 13 of a purple light is formed on bank note, the purple light in rectangular light spots region 13 reflexes to by bank note to be reached The top surface of lens, then after the refraction of lens, along the reflection light direction 17 of ultraviolet light (such as 17 numbering dotted line institutes in Fig. 3 Show) reflex on color sensor 2, ultraviolet lights signal is received by color sensor 2.

Finally, main control board 5 according to currently received white light signal and purple light signal correctly judges current bank note It is true and false.

Claims (5)

1. a kind of lens for paper money discrimination, it is characterised in that including lens body (6), the lens body (6) has bottom surface And top surface, wherein top surface is Cylinder Surface, and bottom surface is divided into three parts, including sphere positioned at bottom surface both ends and in bottom surface Between Cylinder Surface, be smoothly connected between sphere and Cylinder Surface, light is from the injection of lens body (6) bottom surface, by lens After refraction, square focus spot is formed at the top of lens body (6).

2. the lens according to claim 1 for paper money discrimination, it is characterised in that the lens body is axial symmetry knot Structure.

3. the lens according to claim 1 for paper money discrimination, it is characterised in that lens body (6) both ends are set Put the fixed support (7) for fixing lens.

4. a kind of guiding against false of paper currency device based on lens described in claim 1-3 any one, it is characterised in that including white light (1) master is set below, color sensor (2), light shield (3), ultraviolet light (4), main control board (5) and lens, wherein lens Control circuit board (5), white light (1), color sensor (2) and ultraviolet light (4) be set on the circuit board (5), white light (1) and Ultraviolet light (4) is symmetricly set on color sensor (2) both sides, and the color sensor (2) is located on the optical axis of lens, and color passes Sensor (2) surrounding is provided for preventing the light shield (3) that white light (1) and ultraviolet light (4) disturb.

5. guiding against false of paper currency device according to claim 4, it is characterised in that the guiding against false of paper currency device is located at bank note and walks coin In passage (8), lens are located at the bottom of bank note coin passage (8).