Automatic reference mark focusing trigger reader and focusing method

Abstract

The application relates to an automatic reference benchmark focusing trigger code reader and a focusing method, which comprises a code reader body, a code reader lens, a distance detector and an LED light source are installed on the code reader body, and the distance detector and the LED light source are respectively installed on the code reader body on the left and right sides of the code reader lens. Through the structural settings of a distance detection module, an image acquisition unit, a first operation unit, a second operation unit, a data storage module and a power supply control unit, the code reading traceability of similar materials with large height differences can be realized; the application has the functions of automatic adjustment, simple operation, improved processing efficiency of a production line, and good debugging precision and stability.

Description

Technical Field

[0001] This invention relates to the field of barcode reader technology, and in particular to an automatic reference-based focusing trigger barcode reader and focusing method. Background Technology

[0002] A barcode reader is a reading device used to read the information contained in a barcode. It uses optical principles to decode the content of a one-dimensional or two-dimensional barcode and then transmits it to a computer or other processing device via a data cable or wireless communication. It is now widely used in various commercial POS, express logistics, warehousing and transportation and smart manufacturing fields, and has become an important part of the Internet of Things ecosystem.

[0003] Barcode readers are frequently used on industrial production lines to read the codes of materials on the line. However, in daily use, barcode readers cannot automatically adjust to materials of different heights, requiring constant manual adjustments, which makes the operation cumbersome and seriously affects the processing efficiency of the production line. In addition, the accuracy and stability of manual adjustments are poor.

[0004] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create an automatic reference focus trigger reader and focusing method, so as to make it more valuable for industrial use. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention aims to provide an automatic reference-based focusing trigger reader and a focusing method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] One of the objectives of this invention is:

[0008] An automatic reference focus trigger barcode reader includes a barcode reader body, on which a barcode reader lens, a distance detector and an LED light source are mounted. The distance detector and the LED light source are respectively mounted on the barcode reader body on the left and right sides of the barcode reader lens.

[0009] The distance detector includes a distance detection module;

[0010] The barcode reader body includes an image acquisition unit, a first processing unit, a second processing unit, and a data storage module;

[0011] The image acquisition unit includes a sensor, an LED light source module, and a liquid lens module;

[0012] The first computing unit includes a detection data processing module and a data processing module;

[0013] The second processing unit includes an image processing decoding module;

[0014] The data storage module includes a first distance reference parameter module, a first code reading reference parameter module, and a second distance reference parameter module;

[0015] The distance detection module is connected to the detection data processing module, which in turn is connected to the data processing module. The detection data processing module is interactively connected to the first distance reference parameter module and the second distance reference parameter module, respectively. The data processing module is connected to the sensor. The image acquisition unit is connected to the image processing decoding module, which is connected to the first code reading reference parameter module. The first code reading reference parameter module is interactively connected to the second distance reference parameter module, and the data processing module is interactively connected to the data storage module.

[0016] As a further improvement of the present invention, the barcode reader body also includes a power supply control unit, which includes an LED current control module and a lens current control module.

[0017] The data processing module is connected to the power supply control unit, the LED current control module is connected to the LED light source module, and the lens current control module is connected to the liquid lens module.

[0018] As a further improvement of the present invention, the reader lens, distance detector and LED light source are mounted parallel to each other on the reader body along the same horizontal line.

[0019] As a further improvement of the present invention, the distance detector is a laser rangefinder and the LED light source is an LED lamp.

[0020] The second objective of this invention is:

[0021] A focusing method for an automatic reference-based focusing trigger reader includes the following steps:

[0022] Step S1: Install the barcode reader body directly above the production line processing reference table, and make the barcode reader lens, distance detector and LED light source all parallel to the processing reference table directly below;

[0023] Step S2: When no material is placed on the processing reference table, the first distance reference parameter is tested and recorded by the distance detector into the first distance reference parameter module.

[0024] Step S3: When placing the debugging material on the processing reference table, the second distance reference parameter is tested and recorded into the second distance reference parameter module by the distance detector;

[0025] Step S4: Start production line production. After determining that the material is in place, test and record the first reading reference parameter to the first reading reference parameter module through the distance detector.

[0026] Step S5: If there is a large deviation between the first reading reference parameter and the second distance reference parameter, then adjust the current output of the LED light source module and the liquid lens module according to the current state of the reader lens and the LED light source under the state of the second distance reference parameter.

[0027] Step S6: Trigger the image processing decoding module to read the code.

[0028] As a further improvement of the present invention, in step S5:

[0029] The LED current control module controls the LED light source module to increase the input current proportionally, thereby increasing the brightness of the LED light source.

[0030] The lens current control module controls the liquid lens module to increase the input current proportionally, thereby increasing the exposure time of the reader lens.

[0031] By means of the above-described solution, the present invention has at least the following advantages:

[0032] This invention, through its structure consisting of a distance detection module, an image acquisition unit, a first calculation unit, a second calculation unit, a data storage module, and a power supply control unit, can adapt to the reading and tracing of similar materials with significant height differences. This invention also features automatic adjustment, is relatively simple to operate, can improve the processing efficiency of the production line, and offers good accuracy and stability during debugging.

[0033] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an automatic reference focus trigger code reader according to the present invention;

[0036] Figure 2 This is a control principle diagram of an automatic reference focus trigger code reader according to the present invention.

[0037] The meanings of the labels in the figures are as follows.

[0038] 1. Barcode reader body 2. Barcode reader lens

[0039] 3 Distance detectors 4 LED light sources

[0040] 5 Distance Detection Module 6 Image Acquisition Unit

[0041] 7 First Operational Unit 8 Second Operational Unit

[0042] 9 Data storage unit 10 Power supply control unit

[0043] 11 Sensor 12 LED light source module

[0044] 13 Liquid Lens Module 14 Detection Data Processing Module

[0045] 15 Data Processing Module 16 Graphics Processing Decoding Module

[0046] 17 First Distance Reference Parameter Module 18 First Code Reading Reference Parameter Module

[0047] 19 Second Distance Reference Parameter Module 20 LED Current Control Module

[0048] 21 Lens Current Control Module Detailed Implementation

[0049] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0050] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] Example

[0052] like Figures 1-2 As shown,

[0053] One of the objectives of this invention is:

[0054] An automatic reference-based focusing and triggering barcode reader is disclosed. The reader body 1 includes a reader body 1, a reader lens 2, a distance detector 3, and an LED light source 4 mounted on the reader body 1. The distance detector 3 and LED light source 4 are respectively mounted on the left and right sides of the reader body 1. The reader lens 2, distance detector 3, and LED light source 4 are mounted parallel to each other along the same horizontal line on the reader body 1. The distance detector 3 is a laser rangefinder, and the LED light source 4 is an LED light.

[0055] Distance detector 3 includes distance detection module 5;

[0056] The reader body 1 includes an image acquisition unit 6, a first arithmetic unit 7, a second arithmetic unit 8, and a data storage module 9;

[0057] The image acquisition unit 6 includes a sensor 11, an LED light source module 12, and a liquid lens module 13;

[0058] The first arithmetic unit 7 includes a detection data processing module 14 and a data processing module 15;

[0059] The second arithmetic unit 8 includes an image processing decoding module 16;

[0060] Data storage module 9 includes a first distance reference parameter module 17, a first code reading reference parameter module 18, and a second distance reference parameter module 19;

[0061] Power supply control unit 10, which includes LED current control module 20 and lens current control module 21;

[0062] Distance detection module 5 is connected to detection data processing module 14, which in turn is connected to data processing module 15. Detection data processing module 14 is interactively connected to the first distance reference parameter module 17 and the second distance reference parameter module 19, respectively. Data processing module 15 is connected to sensor 11. Image acquisition unit 6 is connected to image processing decoding module 16, which is connected to the first code reading reference parameter module 18. The first code reading reference parameter module 18 is interactively connected to the second distance reference parameter module 19. Data processing module 15 is interactively connected to data storage module 9. Data processing module 15 is connected to power supply control unit 10. LED current control module 20 is connected to LED light source module 12, and lens current control module 21 is connected to liquid lens module 13.

[0063] The second objective of this invention is:

[0064] A focusing method for an automatic reference-based focusing trigger reader includes the following steps:

[0065] Step S1: Install the barcode reader body 1 directly above the production line processing reference table, and make the barcode reader lens 2, distance detector 3 and LED light source 4 all parallel to the processing reference table directly below.

[0066] Step S2: When no material is placed on the processing reference table, the first distance reference parameter is tested and recorded by the distance detector 3 into the first distance reference parameter module 17.

[0067] Step S3: When placing the debugging material on the processing reference table, the second distance reference parameter is tested and recorded by the distance detector 3 into the second distance reference parameter module 19.

[0068] Step S4: Start production line production. After determining that the material is in place, test and record the first reading reference parameter to the first reading reference parameter module 18 through the distance detector 3.

[0069] Step S5: If there is a large deviation between the first reading reference parameter and the second distance reference parameter, then adjust the current output of the LED light source module 12 and the liquid lens module 13 according to the current state of the reader lens 2 and the LED light source 4 under the state of the second distance reference parameter.

[0070] Specifically, in step S5 above:

[0071] The LED current control module 20 controls the LED light source module 12 to increase the input current proportionally, thereby increasing the illumination brightness of the LED light source 4.

[0072] The lens current control module 21 controls the liquid lens module 13 to increase the input current proportionally, thereby increasing the exposure time of the reader lens 2.

[0073] Step S6 triggers the image processing decoding module 16 to read the code.

[0074] In summary, the present invention, through its structure consisting of a distance detection module, an image acquisition unit, a first calculation unit, a second calculation unit, a data storage module, and a power supply control unit, can adapt to the code reading and traceability of similar materials with significant height differences. The present invention has an automatic adjustment function, is relatively simple to operate, can improve the processing efficiency of the production line, and also exhibits good debugging accuracy and stability.

[0075] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly referring to the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0076] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood through the specific circumstances.

[0077] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A focusing method for an automatic reference-based focusing trigger reader, wherein the trigger reader includes a reader body (1), a reader lens (2), a distance detector (3), and an LED light source (4) are mounted on the reader body (1), and the distance detector (3) and the LED light source (4) are respectively mounted on the left and right sides of the reader body (1) of the reader lens (2); characterized in that: The distance detector (3) includes a distance detection module (5); The reader body (1) includes an image acquisition unit (6), a first arithmetic unit (7), a second arithmetic unit (8), and a data storage module (9); The image acquisition unit (6) includes a sensor (11), an LED light source module (12), and a liquid lens module (13). The first arithmetic unit (7) includes a detection data processing module (14) and a data processing module (15). The second arithmetic unit (8) includes an image processing decoding module (16); The data storage module (9) includes a first distance reference parameter module (17), a first code reading reference parameter module (18), and a second distance reference parameter module (19). The distance detection module (5) is connected to the detection data processing module (14), the detection data processing module (14) is connected to the data processing module (15), the detection data processing module (14) is interactively connected to the first distance reference parameter module (17) and the second distance reference parameter module (19) respectively, the data processing module (15) is connected to the sensor (11), the image acquisition unit (6) is connected to the image processing decoding module (16), the image processing decoding module (16) is connected to the first code reading reference parameter module (18), the first code reading reference parameter module (18) is interactively connected to the second distance reference parameter module (19), and the data processing module (15) is interactively connected to the data storage module (9). The focusing method includes the following steps in sequence: Step S1: Install the barcode reader body (1) directly above the production line processing reference table, and make the barcode reader lens (2), distance detector (3) and LED light source (4) all parallel to the processing reference table directly below; Step S2: When no material is placed on the processing reference table, the first distance reference parameter is tested and recorded by the distance detector (3) into the first distance reference parameter module (17); Step S3: When placing the debugging material on the processing reference table, the second distance reference parameter is tested and recorded by the distance detector (3) into the second distance reference parameter module (19); Step S4: Start production line production. After determining that the material is in place, test and record the first reading reference parameter to the first reading reference parameter module (18) through the distance detector (3). Step S5: If there is a large deviation between the first reading reference parameter and the second distance reference parameter, then adjust the current output of the LED light source module (12) and the liquid lens module (13) according to the current state of the reader lens (2) and the LED light source (4) under the state of the second distance reference parameter. Step S6: Trigger the image processing decoding module (16) to read the code.

2. The method of claim 1, wherein the method further comprises the step of: 2.

1. automatically focusing the trigger reader on the reference mark. The barcode reader body (1) also includes a power supply control unit (10), which includes an LED current control module (20) and a lens current control module (21). ​ The data processing module (15) is connected to the power supply control unit (10), the LED current control module (20) is connected to the LED light source module (12), and the lens current control module (21) is connected to the liquid lens module (13).

3. The focusing method for an automatic reference-based focusing trigger reader as described in claim 1, characterized in that, The reader lens (2), distance detector (3) and LED light source (4) are mounted parallel to each other on the reader body (1) along the same horizontal line.

4. The focusing method for an automatic reference-based focusing trigger reader as described in claim 1, characterized in that, The distance detector (3) is a laser rangefinder, and the LED light source (4) is an LED lamp.

5. The focusing method of an automatic reference focus trigger reader as described in claim 1, characterized in that, In step S5: The LED current control module (20) controls the LED light source module (12) to increase the input current proportionally, thereby increasing the illumination brightness of the LED light source (4); The lens current control module (21) controls the liquid lens module (13) to increase the input current proportionally, thereby increasing the exposure time of the reader lens (2).

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