CN216979766U

CN216979766U - A plurality of two-dimensional code scanning module

Info

Publication number: CN216979766U
Application number: CN202123333586.8U
Authority: CN
Inventors: 秦始龙; 刘帅磊
Original assignee: Chengdu Zhanwei Electromechanical Automation Co ltd
Current assignee: Chengdu Zhanwei Electromechanical Automation Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-15
Anticipated expiration: 2031-12-28

Abstract

The utility model belongs to an automatic code scanning device, and particularly relates to a plurality of two-dimensional code scanning modules. The utility model provides a plurality of two-dimensional code scanning module, includes prism module, two-dimensional code and camera, the camera includes the camera lens, the prism module includes multiunit front prism and back prism, the plane of reflection of back prism faces the camera lens, the plane of reflection of front prism faces the two-dimensional code, back prism and front prism cooperation. The utility model has simple structure, saves the space of the machine platform and is convenient to assemble, maintain and operate; the automatic code scanning function can be realized; the cost is reduced, and the use number of cameras is reduced.

Description

A plurality of two-dimensional code scanning module

Technical Field

The utility model belongs to an automatic code scanning device, and particularly relates to a plurality of two-dimensional code scanning modules.

Background

The technical form of the entrance recognition of the mobile internet is a technical link in the wave industry of the internet of things. The application of the Internet of things can not be automatically recognized, and the application of two-dimensional code recognition seems to permeate into the aspects of our life, subway advertisements, newspapers, train tickets, air tickets, fast food restaurants, movie theaters, group buying websites and various commodity outsourcing packages all night. The two-dimensional code has the characteristics and advantages of large data storage capacity, good confidentiality, low cost, uniqueness and the like, and is combined with mobile terminals such as smart phones to form better interactivity and user experience. In the mobile internet business mode, the range of business activities of people is wider, and therefore timely information interaction and sharing are needed.

At present, the present yard technique of sweeping is that a two-dimensional code corresponds a camera and sweeps the sign indicating number. However, this code scanning method has the following disadvantages:

1. the cost is high, when more than one code needs to be scanned, the number of cameras needs to be correspondingly increased, and meanwhile, the cost of a workpiece needs to be considered when the cameras are installed;

2. the code scanning efficiency is low, the position of each two-dimensional code is different in the machine table, the camera needs to be adjusted to adapt to the optimal position for scanning the two-dimensional code, a plurality of cameras need to be adjusted for many times, and the time consumption is long;

3. the code scanning module occupies a large space, a plurality of cameras need to consider installation of a plurality of sets of code scanning modules, normally, the internal space of a machine is limited, and a plurality of sets of code scanning modules occupy a large part of the machine space.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a plurality of two-dimensional code scanning modules.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a plurality of two-dimensional code scanning module, includes prism module and camera, the camera includes the camera lens, the prism module includes front prism and back prism, and two adjacent back prisms set up before the camera lens, the both sides of two adjacent back prisms are provided with front prism, two respectively the axis symmetrical arrangement of camera lens is followed to front prism, and the plane of reflection of the front prism of the relative both sides of axis is corresponding with the plane of reflection of reverse prism.

Further, the device also comprises a coaxial light source, and the coaxial light source is arranged on the lens.

Furthermore, the prism module is connected with the coaxial light source through the prism module fixing plate.

Further, coaxial light source includes coaxial light base, coaxial light base is provided with lamp pearl, light filter, the lamp pearl is located the offside of light filter.

Furthermore, the front prism and the back prism are isosceles right triangular prisms, and the reflecting surface of the front prism and the reflecting surface of the back prism are inclined surfaces of the isosceles right triangular prisms.

Further, still include camera fixed plate, prism base and prism apron, camera and camera fixed plate fixed connection, front prism and back prism set up on the prism base, the prism apron lid is on the prism base.

Furthermore, the inclined plane of the front prism and the plane where the two-dimensional code is located form an angle of 45 degrees, the lens and the inclined plane of the back prism form an angle of 45 degrees, and the inclined plane of the front prism is parallel to the inclined plane of the back prism.

Further, the front prism and the back prism are BK7 glass.

The utility model has the beneficial effects that:

the utility model utilizes a plurality of prisms to fix the prisms at the designated positions, and images the two-dimensional code in the visual field range of a camera by the prism reflection principle, thereby reducing the cost and accelerating the code scanning efficiency. Simple structure saves board space, assembly maintenance convenient operation.

Drawings

Fig. 1 is a schematic view of an overall layout of a code scanning module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 2 is a schematic front view of a prism module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 3 is a schematic back view of a prism module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 4 is a schematic view of a prism structure of a code scanning module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 5 is a schematic view of prism imaging of a code scanning module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 6 is a schematic view of a coaxial light source structure of a code scanning module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 7 is a schematic structural view of a prism module of a code scanning module of a plurality of two-dimensional code scanning modules according to the present invention;

fig. 8 is a flowchart illustrating a code scanning module of the two-dimensional code scanning modules according to the present invention;

in the figure: the device comprises a 1-prism module, a 2-prism module fixing plate, a 3-coaxial light source, a 4-lens, a 5-camera, a 6-camera fixing plate, a 7-front prism, an 8-prism cover plate, a 9-prism base, a 10-back prism, an 11-wire, a 12-lamp bead, a 13-optical filter and a 14-coaxial optical base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1, a plurality of two-dimensional code scanning modules include a prism module 1, a two-dimensional code and a camera 5, the camera 5 includes a lens 4, the prism module 1 includes a plurality of sets of front prisms 7 and back prisms 10, the reflection surface of the back prisms 10 faces the lens 4, the reflection surface of the front prisms 7 faces the two-dimensional code, and the back prisms 10 are matched with the front prisms 7.

The two-dimensional code is placed in front of the front prism 7, according to the reflection principle of light, the light can be reflected under the action of the prism, so that the imaging of the two-dimensional code can be deflected under the reflection action of the front prism 7, the back prism 10 is arranged in the direction after deflection, the deflected two-dimensional code can be deflected secondarily under the action of the back prism, the imaging after secondary deflection enters the camera 5, under the action of the front prism 7 and the back prism 10, a plurality of two-dimensional codes can be imaged in the camera 5 at the same time, more cameras 5 do not need to be arranged, the arrangement not only accelerates the code scanning efficiency, but also reduces the using number of the cameras 5.

As shown in fig. 6, the device further comprises a coaxial light source 3, the coaxial light source 3 is arranged on the camera 5, and the coaxial light source 3 (a diffusion coaxial lamp and a metal plane diffuse reflection illumination light source) provides more uniform illumination than the traditional light source, so that the accuracy and reproducibility of machine vision are improved. Coaxial light source 3 mainly used detects the very plane object of reflection of light degree, for example glass, and coaxial light source can highlight object surface unevenness, overcomes the interference that the surface reflection of light caused, mainly used detects bruise, fish tail, crackle and foreign matter on the level and smooth surface of object. In order to ensure the imaging definition of the camera 5, the coaxial light source 3 is used for irradiation, which is beneficial to improving the accuracy of code scanning.

The coaxial light source 3 comprises a coaxial light base 14, the coaxial light base 14 is provided with a lamp bead 12 and an optical filter 13, and the lamp bead 12 is located beside the optical filter 13. The coaxial light base 14 is a cylinder, the top of the cylinder is provided with a groove, a light filter 13 is obliquely arranged in the groove and used for emitting light rays and emitting coaxial light, a position lamp bead 12 close to the light filter 13 is arranged, the lamp bead 12 is embedded into the inner wall of the groove, one end of the lamp bead 12 penetrates through the coaxial light base 14 and is connected with an electric wire 11, a light source of the lamp bead 12 is diffused to the light filter 13, and the light is reflected to the two-dimensional code by the light filter 13 and is emitted into the lens 4 through the prism module 1. The design structure is simple, and the function is practical. The front prism 7 and the back prism 10 adopt BK7 glass which has high hardness and a transmission spectrum range of 380-2100 nm. The high uniformity of BK7, low bubble and impurity levels, and simple manufacturing and processing make it a good choice for making transmissive optical elements. Has excellent mechanical performance, very low bubbles and impurities and good scratch resistance. Because of its stable chemical properties, no special treatment is required for grinding and polishing. The manufacturing is convenient, and the price has higher cost performance compared with other glass.

As shown in fig. 4, 5, and 8, the front prism 7 and the rear prism 10 are isosceles right triangular prisms. Still include camera fixed plate 6, prism base 9 and prism apron 8, camera 5 and camera fixed plate 6 fixed connection, front prism 7 and back prism 10 set up on prism base 9, prism apron 8 lid is on prism base 9. The inclined plane of the front prism 7 and the plane where the two-dimensional code is located form an angle of 45 degrees, the lens 4 and the inclined plane of the back prism 10 form an angle of 45 degrees, and the inclined plane of the front prism 7 is parallel to the inclined plane of the back prism 10. After the prism cover plate 8 covers the prism base 9, the matching between the prisms of the prism module in the middle is not interfered with each other, and the respective light paths are not overlapped. As shown in fig. 5, this embodiment provides an implementation manner in which two-dimensional codes are scanned simultaneously: set up a "T" type groove with prism base 9, two positive prisms 7 are located the both ends of the horizontal portion in "T" type groove, and two right-angle faces of every positive prism 7 all offset with prism base 9, and light shines on the inclined plane. Two back prisms 10 with right-angle surfaces abutting against each other are arranged in the middle of the transverse part of the T-shaped groove, in order to avoid light source interference, the back prisms 10 are not provided with light-transmitting baffle plates of the abutting right-angle surfaces, and the inclined surfaces of the front prisms 7 are parallel to the inclined surfaces of the back prisms 10. When two-dimensional code place in the place ahead of prism module 1, the face that the two-dimensional code was located becomes 45 degrees angles with the inclined plane of positive prism, and light is through positive prism 7 reflection back, jets out with 45 degrees outgoing angle, and the light of jetting out jets into the inclined plane of back prism 10 again with 45 degrees angles, is being jetted into the perpendicular portion in "T" type groove by the inclined plane reflection, the bottommost of perpendicular portion is the camera lens, and the effect formation of image of two-dimensional code through positive prism 7 and reverse side prism 10 is in camera lens 4, readjustment camera lens 4's focus to the discernment of the two-dimensional code of different positions has been realized, makes things convenient for people's life.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a plurality of two-dimensional code scanning module, its characterized in that, includes prism module (1) and camera (5), camera (5) include camera lens (4), prism module (1) is including front prism (7) and back prism (10), and two adjacent back prisms (10) set up before camera lens (4), the both sides of two adjacent back prisms (10) are provided with front prism (7) respectively, two axis symmetrical arrangement along camera lens (4) is followed in front prism (7), and the inclined plane of the inclined plane of front prism (7) of the relative both sides of axis is corresponding with the inclined plane of back prism (10).

2. The two-dimensional code scanning modules according to claim 1, further comprising a coaxial light source (3), wherein the coaxial light source (3) is disposed on the lens (4).

3. The two-dimensional code scanning modules according to claim 2, further comprising a prism module fixing plate (2), wherein the prism module (1) is connected to the coaxial light source (3) through the prism module fixing plate (2).

4. The two-dimensional code scanning module set according to claim 3, wherein the coaxial light source (3) comprises a coaxial light base (14), the coaxial light base (14) is provided with a lamp bead (12) and a filter (13), and the lamp bead (12) is located at the opposite side of the filter (13).

5. The multi-two-dimensional code scanning module according to claim 1, wherein the front prism (7) and the back prism (10) are isosceles right triangular prisms, and the reflection surface of the front prism (7) and the reflection surface of the back prism (10) are both inclined surfaces of the isosceles right triangular prisms.

6. The two-dimensional code scanning module set according to claim 1, further comprising a camera fixing plate (6), a prism base (9) and a prism cover plate (8), wherein the camera (5) is fixedly connected with the camera fixing plate (6), the front prism (7) and the back prism (10) are arranged on the prism base (9), and the prism cover plate (8) covers the prism base (9).

7. The two-dimensional code scanning modules according to claim 5, wherein the reflecting surface of the front prism (7) is at an angle of 45 degrees with the surface where the two-dimensional code is located, the lens (4) is at an angle of 45 degrees with the reflecting surface of the back prism (10), and the reflecting surface of the front prism (7) is parallel to the reflecting surface of the back prism (10).

8. The two-dimensional code scanning modules according to claim 7, wherein the front prism (7) and the back prism (10) are both BK7 glass.