TWI709912B - Intelligent code reading positioning system and method - Google Patents

Abstract

The present invention provides a smart code reading positioning system comprising: a reading head with a light source and reading the barcode of a first product conveyed by a conveyor belt; a horizontal movement mechanism that drives the reading head to a first set position to make the reading Head reading the barcode; and a processing unit connected to the reading head and the horizontal movement mechanism, wherein the processing unit plans the reading head to cover the predetermined width of the conveyor belt with several viewing areas, between adjacent viewing areas Including the overlapping field of view area, when the barcode is located in one of the overlapping field of view areas, the processing unit determines the most recent reading position and the second nearest reading position from several field of view areas, and controls the reading head from the most recent reading position and The barcode is read at the nearest reading position to determine the first setting position that has a better reading performance for reading the barcode.

Description

Smart code reading positioning system and method

The present invention relates to a production line code reading setting system. More specifically, the present invention is a smart code reading positioning system that automatically positions the code reader with the best code reading performance.

The process stations that go through the PCB production process are very complicated. In the past, each production object was bound to the production line production information by bar code, and the data was traced. The purpose is to control the quality. In the future, from raw materials, process yield, Production parameters, treatment tools, etc. can all be process-bound, and for quality management, various detailed data can be linked and bound for in-depth analysis or remote control or automated diagnostic development.

In the adjustment mode of a production line, the barcode reading setting is performed. In the prior art, a barcode reading optical module is set up on the production line conveyor belt. After taking the image and decoding, the relevant data is sent to the process data center, and the barcode serial number is bound to the relevant production parameters. However, because the products produced are diverse and the types vary greatly, if a single code reading system is set up on the production line , It will cause the manual to move and set the reading position to correspond to the barcode position of various products, as shown in the first A and first B pictures, different products have different sizes and different barcode positions.

Although the production line can use multiple readers to fully cover the passage of various barcodes on the conveyor belt, it will also greatly increase the cost of the production line design. In addition, regardless of single or multiple sets of fixed barcode readers, the production line may face the product's barcode reading position being affected by the angle of the light source or appearing on the periphery of the barcode reader's field of view and falling in a sensitive area that is prone to insufficient light reflection. This leads to unstable barcode reading performance.

One of the objectives of the present invention is to provide a smart code reading and positioning system, which can set the bar code reading in the adjustment mode of the production line, and can automatically locate the code reader with the best code reading performance, as a conveyor belt in mass production mode. The barcode reading setting position of the barcode reader during production.

One of the objectives of the present invention is to provide a smart code reading and positioning system, which can set the bar code reading of various products under the adjustment mode of the production line, and automatically locate the code reader with the best code reading performance of various products , When conveying various products as a conveyor belt in mass production mode, the barcode reader sets the position according to the barcode reading of various products.

In order to achieve the above creative objective, the present invention provides a smart code reading and positioning system, including: a reading head to read a first barcode of a first product conveyed by a conveyor belt; and a light source to illuminate the first product The first barcode; a position sensor to detect the position of the first product conveyed by the conveyor belt; a horizontal movement mechanism to drive the reading head to a first set position, so that the reading head Reading the first barcode; and a processing unit connected to the position sensor, the reading head and the horizontal movement mechanism, wherein, in an adaptation mode, the processing unit plans the reading head to read a plurality of The view area corresponding to the position covers a predetermined width of the conveyor belt, and the view areas corresponding to adjacent reading positions include at least one overlapping view area. When the first barcode is located in one of the overlapping view areas, the processing The unit determines a most recent reading position and a first near reading position from several field of view areas including the overlapping field of view, and controls the reading head from the last reading position and the second near reading position corresponding to the field of view Reading the first bar code in the overlapping field of view area to determine the better reading performance of the first bar code as the first setting position.

Wherein, the processing unit controls the horizontal movement mechanism to drive the reading head to the latest reading position and the next closest reading position, and controls the reading head to read the first barcode multiple times to calculate the latest reading Which position is better for reading the first barcode between the position and the nearest reading position, and the one with the better performance is set as the first setting position.

Wherein, in a mass production mode, the processing unit detects the position of the first product according to the position sensor, and controls the horizontal movement mechanism to drive the reading head to read the first barcode at the first set position .

Wherein, the smart code reading and positioning system further includes a database that stores the barcode parameters of the first product.

Wherein, in the adaptation mode, the processing unit determines the latest reading position and the closest reading from the reading positions corresponding to the multiple field of view areas including the overlapping field of view according to the barcode parameters of the first product. Fetch the position, and store the determined first setting position in the database.

Wherein, the database further stores barcode parameters related to a second product, and the second product has a second barcode.

Wherein, in the adaptation mode, when the second barcode is located in one of the overlapping field of view areas, the processing unit determines a most recent reading position from the reading positions corresponding to the plurality of field of view areas including the overlapping field of view area. And the first near reading position, and controlling the reading head to read the second barcode in the overlapping field of view from the field of view corresponding to the last reading position and the second near reading position to determine to read the first The better reading performance of the two barcodes is a second setting position.

Wherein, in the adjustment mode, the processing unit determines the most recent reading position and the next reading position from the reading positions corresponding to the multiple field of view areas including the overlapping field of view according to the barcode parameters of the second product. Obtain the position, and store the determined second setting position in the database.

Wherein, the database further stores a production line data, and the production line data includes the sequence of conveying the first product and the second product by the conveyor belt in a mass production mode.

Wherein, in the mass production mode, the processing unit controls the horizontal movement mechanism to drive the reading head to read the first barcode at the first set position according to the production line data, and at the second set position Read the second bar code.

In order to achieve the above creative objective, the present invention provides a smart code reading positioning method, including: in an adaptation mode, planning a reading head to cover a predetermined width of a conveyor belt with a field of view corresponding to a plurality of reading positions , And make the viewing areas corresponding to adjacent reading positions include at least one overlapping viewing area; when a first barcode of a first product is located in one of the overlapping viewing areas, from the multiple viewing areas containing the overlapping viewing area The area determines a most recent reading position and a first near reading position; and, the reading head reads the first in the overlapping field of view from the field of view corresponding to the most recent reading position and the second near reading position. For the barcode, the first setting position is determined to have a better reading performance for reading the first barcode.

The method of the present invention further includes: in a mass production mode, the reading head reads the first barcode at the first set position for decoding.

The method of the present invention further comprises: in the adaptation mode, according to the barcode parameters of the first product, from the reading positions corresponding to the plurality of field of view areas including the overlapping field of view, to calculate the most recent reading position and the time of reading. The position is recently read, and the determined first setting position is stored in a database.

The method of the present invention further includes: in the adaptation mode, when a second barcode of a second product is located in one of the overlapping view areas, determining a most recent reading position and A near reading position; and, the reading head reads the second barcode in the overlapping field of view from the field of view area corresponding to the last reading position and the second near reading position to determine to read the second The better bar code reading performance is a second setting position.

The method of the present invention further includes: in a mass production mode, knowing the order in which the conveyor belt conveys the first product and the second product according to a production line data, and controlling the reading head to read at the first set position respectively Take the first barcode, and read the second barcode at the second set position.

According to the smart code reading positioning system and method implemented in the present invention, the following effects can be obtained: (1) In the adaptation mode, the code reading area is controlled in the light source concentrated area, reducing the perimeter of the reading head that is sensitive to insufficient light reflection. The area is used, which can improve the success rate and stability of barcode reading, and reduce the number of full coverage readers; (2) In the adaptation mode, it can automatically locate and read various products with the best barcode reading performance. The barcode reading setting position of the encoder is stored in the production line data of the database; (3) In the adjustment mode, regardless of whether the light source illuminates the barcode from the front or the side, the system can select a more accurate field of view from the front or side shot. The barcode reading setting position for good barcode reading performance is decoded in mass production mode; and (4) in mass production mode, according to the production line data, the barcode positions of various products conveyed on the production line can be correctly read.

First, referring to the first A and the first B, the top views of the first product 1 and the second product 2 are respectively shown. In the embodiment of the present invention, the first product 1 and the second product 2 can be conveyed on a conveyor belt of a production line. The difference between the first product 1 and the second product 2 can be different volumes or different barcode 3 and 4 positions. The system of the present invention records the volume and relative barcode positions of the first product 1 and the second product 2 in the product information of a database. In an embodiment of the present invention, the barcodes 3 and 4 are two-dimensional barcodes, and the positions of the barcodes 3 and 4 relative to the coordinate positions of the center points of the first product 1 and the second product 2 are regarded as the first product 1 respectively. Barcode parameters with the second product 2.

Please refer to the second figure, which shows the block diagram of the smart code reading and positioning system of the present invention. In the embodiment of the present invention, the smart code reading positioning system includes: at least one position sensor 12, a two-dimensional code reading head 13, a horizontal movement mechanism 14 and a processing unit 11. The horizontal moving mechanism 14 is erected above a conveyor belt of a production line, and the two-dimensional code reading head 13 is installed on the horizontal moving mechanism 14 and is driven to move in the horizontal direction to read the two-dimensional code The field of view of the head 13 can cover the conveyor belt. The position sensor 12 is installed at an appropriate position near the conveyor belt to detect the position where a product is conveyed by the conveyor belt, and trigger the system of the present invention to control the QR code reading head 13 to shoot at a code reading setting position A two-dimensional bar code that appears in the field of view. The processing unit 11 is connected to the position sensor 12, the two-dimensional code reading head 13 and the horizontal movement mechanism 14, and controls the operation of the aforementioned system of the present invention.

The system of the present invention further includes a database 15 and a robotic arm (not shown), the robotic arm is used to carry the first product 1 or the second product 2 in a predetermined direction and placed in the center of the conveyor belt; the database 15 Record a product data and a production line data, where the product data contains the barcode parameters of a first product 1 or at least a second product 2, such as two-dimensional code information features, such as coordinates, Pitch, Patten, Process, Gerber, etc. The production line information includes: the order of the conveyor belt to convey the first product 1 and the second product 2 in a mass production mode.

In an embodiment of the present invention, the two-dimensional code reading head 13 includes a middle hole backlight source, and the middle hole backlight source illuminates the field of view of the two-dimensional code reading head 13 on the conveyor belt. The position of the robot arm to place the product is not limited, in principle, it is placed at the center of the conveyor belt 5. However, there will inevitably be a small error in the conveying process, so there is a certain error range of the placement position. In addition, the product placement direction is not limited, in principle the same product is fixed.

Please refer to FIG. 3A and FIG. 3B, respectively, which show the architecture diagrams of the smart code reading positioning system of the present invention from the top and test perspectives. In the embodiment of the present invention, the smart code reading positioning system includes: a conveyor belt 5 with a preset width P, the conveyor belt 5 is used to transport the first product 1 and the second product 2 from the previous process station to the next Process station. The horizontal movement mechanism 14 includes a frame, a motor, and a sliding table group. The frame mounts the motor and the sliding table group above the conveyor belt 5 and makes the sliding table group straddle the conveyor belt 5. The two-dimensional code reading head 13 is installed on the slide group, and the processing unit 11 controls the motor of the horizontal movement mechanism 14 to drive the two-dimensional code reading head 13 to move horizontally to cover the predetermined width of the conveyor belt 5. P. The two-dimensional code reading head 13 has a field of view, the field of view has a field of view width W, the field of view width W is smaller than the predetermined width P of the conveyor belt 5, the predetermined width P refers to the rigidity of the width of the conveyor Limits include the width of the track or the width formed by the guide plate on the track or the width formed by the aisle retractor or robotic arm.

When the conveyor belt 5 conveys the first product 1 in the direction of the QR code reading head 13, the position sensor 12 detects the conveyed position of the first product 1, and will notify the processing unit 11 to control the QR code reading The head 13 photographs the first barcode 3 falling in at least one of the view areas A, B, and C for decoding.

In an embodiment of the present invention, the two-dimensional code reading head 13 uses a center hole backlight or a coaxial light source or a light source erected to photograph the two-dimensional code of the product. Due to the different projection light sources used in the system or the different surface materials and characteristics of the product, the front camera decoding may encounter problems such as reflection (too strong) or non-reflective, which may affect the decoding performance. At this time, side shooting can effectively improve Decoding time and percentage of successful decoding. Therefore, the processing unit 11 of the smart code reading positioning system of the present invention can be operated in an adaptation mode and a mass production mode. In the adaptation mode, the processing unit 11 operates at a reading position with better code reading performance as the setting in the volume In the production mode, one of the two-dimensional code reading heads 13 is set at the reading setting position; in this mass production mode, the processing unit 11 operates to control the horizontal movement mechanism 14 to drive the two-dimensional code reading head 13 to the reading set position to shoot the second Dimension code is decoded. In an embodiment of the present invention, the code reading performance can be determined by the decoding time and the obtained ppm value, the number of images taken and the ratio of successful decoding.

In the adjustment mode, the processing unit 11 plans the two-dimensional code reading head 13 to cover a predetermined width P of the conveyor belt 5 with the field of view areas A, B, and C corresponding to a plurality of reading positions, wherein each field of view The areas A, B, and C have a field of view width W, and the corresponding reading position is preferably the center point of the field of view. The processing unit 11 plans to include at least one overlapping view area between the view areas corresponding to the adjacent reading positions. The overlapping view area can be set as a percentage of the view area X%, and X% can be between 5-50%, and preferably It is 30% above. The processing unit 11 plans the number N of visual fields corresponding to the reading position according to the following formula:

Field of view width W×the number of planned field of view N>(1+X%) times the preset width P; N takes the smallest integer value.

In an embodiment of the present invention, the visual field width W is 150mm, the product conveying width space (P) is 300mm, and the visual field overlap area (X%) is preferably 30%, according to the formula 150×N> 300×(1+ 30%), it can be obtained that N>2.6, and the smallest integer value of N is 3. Therefore, the processing unit 11 determines that the number of view areas to be divided is 3.

When the first barcode 3 is located in one of the overlapping fields of view, as shown in the fourth figure, the processing unit 11 according to the coordinate position of the first barcode 3 relative to the center point of the first product 1 contained in the product data of the database 15, From the center reading positions corresponding to the viewing areas B and C that include the overlapped viewing area, a nearest reading position and one near reading position are calculated. Taking the fourth figure as an example, the center reading position corresponding to the field of view area C is the most recent reading position, and the center reading position corresponding to the field of view area B is the second nearest reading position. In different embodiments of the present invention, the number of view areas including the overlapped view area may be greater than 2, and the processing unit 11 includes the first barcode 3 relative to the coordinate position of the center point of the first product 1 The several viewing areas overlapping the viewing area determine a nearest reading position and a near reading position.

In the adjustment mode, the processing unit 11 controls the two-dimensional code reading head 13 to read the overlapping field of view from the field of view B and C corresponding to the nearest reading position and the next reading position, respectively. The first barcode 3 to determine the better reading performance of the first barcode 3 is the barcode reading setting position of the two-dimensional code reading head 13 in the mass production mode, which is the so-called first product 1 The first setting position, and the quality of the code reading performance can be determined by the decoding time and the obtained ppm value, the number of images taken and the ratio of successful decoding. The processing unit 11 stores the first set position in the product data of the database 15. In this adaptation mode, if the first barcode 3 only appears in a single field of view, as shown in Figure 3A as an example, it is on the left side of field of view area A or on the right side of field of view C, the processing unit 11 will determine the single field of view The center reading position corresponding to the area is the code reading setting position of the two-dimensional code reading head 13 in the mass production mode. After the processing unit 11 finishes setting the reading setting position of one of the two-dimensional code reading heads 13 in the mass production mode, the processing unit 11 controls the horizontal movement mechanism 14 to drive the two-dimensional code reading head 13 to the reading in the mass production mode. Set the position of the code to capture the first barcode 3 for decoding.

If the position deviation occurs in the mass production mode, the first barcode 3 only partially appears in the overlapping field of view, which makes it impossible to read the code smoothly. The system will change the set field of view to solve this problem. For example, the first product 1 originally determined the view area C from the view areas B and C as the code reading view area in the mass production mode. Due to the sudden placement change, the view area C could not be read, so it will be changed to The adjacent view area B is used as a new code reading view area to solve this problem. If the above problems have not been improved, redo the adjustment mode to determine the reading position again.

In a further embodiment of the present invention, in the adaptation mode, the processing unit 11 plans the two-dimensional code reading head 13 to cover the conveyor belt 5 with the field of view areas A, B, and C corresponding to a plurality of reading positions A preset width P can set the second setting position of the two-dimensional code reading head 13 in the mass production mode for at least one second product 2. Similarly, when the second barcode 4 is located in one of the overlapping field of view areas, the processing unit 11 according to the coordinate position of the second barcode 4 relative to the center point of the second product 2 contained in the product data of the database 15, from The central reading positions corresponding to the multiple visual fields of the overlapping visual field area respectively calculate a most recent reading position and a near reading position. The processing unit 11 controls the two-dimensional code reading head 13 to read the second barcode 4 in the overlapping field of view a plurality of times from the field of view area corresponding to the nearest reading position and the next reading position to determine The better barcode reading performance of reading the second barcode 4 is the barcode reading setting position of the two-dimensional code reading head 13 in the mass production mode, which corresponds to the second setting position of the second product 2, and the barcode reading performance The pros and cons of can be determined by the decoding time, the ppm value obtained, and the number of images taken and the ratio of successful decoding. The processing unit 11 stores the second set location in the product data of the database 15.

Therefore, in the mass production mode, the processing unit 11 learns the sequence of the first product 1 and the second product 2 on the conveyor belt 5 according to the production line data in the database 15, and controls the horizontal movement mechanism 14 to drive the The two-dimensional code reading head 13 respectively reads the first barcode 3 at the first set position, and reads the second barcode 4 at the second set position.

When a product is placed in a non-central position of the conveyor belt, as long as the processing unit 11 obtains the coordinate information of the QR code from the database (for example, by calculating the relative distance from the center line of the conveyor width and the center point of the product, etc.), No matter what the placement position is, the photo reading of this patent can be performed.

Please refer to Figure 5, which shows a flowchart of the smart code reading and positioning method of the present invention. In the embodiment of the present invention, a smart code reading and positioning method is implemented in a smart code reading and positioning system. The system includes: a two-dimensional code reading head 13, a position sensor 12, a horizontal movement mechanism 14, and One processing unit 11. The two-dimensional code reading head 13 reads a first barcode 3 of a first product 1 and a second barcode 4 of a second product 2 conveyed by a conveyor belt 5. The horizontal movement mechanism 14 drives the two-dimensional code reading head 13 to a first set position to read the first barcode 3, and drives the two-dimensional code reading head 13 to a second set position to read the second barcode 3 4. The processing unit 11 is connected to the position sensor 12, the two-dimensional code reading head 13, and the horizontal movement mechanism 14, and controls the position sensor 12 and the two-dimensional code reading in an adjustment mode and a mass production mode The head 13 and the horizontal movement mechanism 14 perform the above operations. The processing unit 11 sets the first setting position and the second setting position of the two-dimensional code reading head 13 in the mass production mode in the adjustment mode.

The processing unit 11 of the smart code reading and positioning system executes a smart code reading and positioning method, including the following steps:

Step 101: In an adaptation mode, the processing unit 11 plans a two-dimensional code reading head 13 to cover a predetermined width of a conveyor belt 5 with a field of view area corresponding to a plurality of reading positions, where adjacent reading positions The corresponding view areas include at least one overlapping view area.

Step 102: In the adaptation mode, when a first barcode 3 of a first product 1 is located in one of the overlapping view areas, the processing unit 11 determines the distance to the first barcode from a number of view areas including the overlapping view area 3 One of the most recent reading position and the one most recent reading position. The step 102 further includes: in the adjustment mode, when a second barcode 4 of a second product 2 is located in one of the overlapping view areas, the processing unit 11 determines the distance from the plurality of view areas including the overlapping view area The first code 4 is one of the most recent reading position and one of the most recent reading positions.

Step 103: In the adjustment mode, the processing unit 11 controls the two-dimensional code reading head 13 to read multiple times from the field of view area corresponding to the nearest reading position from the first barcode 3 and the next near reading position The first barcode 3 in the overlapping field of view is determined to be a first set position that has a better reading performance for reading the first barcode 3. The step 103 further includes: in the adjustment mode, the processing unit 11 controls the two-dimensional code reading head 13 to obtain a plurality of fields of view corresponding to the nearest reading position from the second barcode 4 and the next near reading position Reading the second barcode 4 in the overlapping field of view at a time to determine the better reading performance of the second barcode 4 is a second setting position.

Step 104, in a mass production mode, the processing unit 11 controls the two-dimensional code reading head 13 to read the first barcode 3 at the first set position and read the second barcode at the second set position 4 Decode separately.

1: The first product 2: The first barcode 3: The second product 4: The second barcode 5: Conveyor belt 11: Processing unit 12: Position sensor 13: QR code reading head 14: Horizontal movement mechanism 15: Database 101-104: steps A, B, C: field of view P: preset width

The first A and the first B are top views of the first product and the second product.

The second figure is a block diagram of the smart code reading and positioning system of the present invention.

The third A and the third B are the architecture diagrams of the smart code reading and positioning system of the present invention.

The fourth figure is a schematic diagram of the visual field area corresponding to the most recent reading position and the next nearest reading position including the overlapping field of view.

The fifth figure is a flowchart of the smart code reading and positioning method of the present invention.

1: The first product

3: The first barcode

5: Conveyor belt

12: Position sensor

13: QR code reading head

14: Horizontal movement mechanism

A, B, C: field of view

P: preset width

Claims (15)

A smart code reading and positioning system, including: A reading head to read a first barcode of a first product conveyed by a conveyor belt; A light source to illuminate the first barcode of the first product; A position sensor to detect the position of the first product conveyed by the conveyor belt; A horizontal movement mechanism to drive the reading head to a first set position so that the reading head can read the first barcode; and A processing unit connected to the position sensor, the reading head and the horizontal movement mechanism, Wherein, in an adaptation mode, the processing unit plans the reading head to cover a predetermined width of the conveyor belt with the field of view areas corresponding to a plurality of reading positions, and the field of view areas corresponding to adjacent reading positions include At least one overlapping field of view area, when the first barcode is located in one of the overlapping field of view areas, the processing unit determines a most recent reading position and a first near reading position from several field of view areas including the overlapping field of view area, and controls the The reading head reads the first barcode in the overlapping field of view from the field of view area corresponding to the most recent reading position and the next near reading position, to determine the one with better reading performance for reading the first barcode The first setting position. The smart code reading positioning system described in item 1 of the scope of patent application, wherein the processing unit controls the horizontal movement mechanism to drive the reading head to the nearest reading position and the next nearest reading position, and controls the reading head Read the first bar code several times to calculate which of the reading performance of the first bar code is better at the nearest reading position and the next reading position, and set the one with the best reading performance as the first One set position. For example, in the smart code reading positioning system described in the first item of the patent application, in a mass production mode, the processing unit detects the position of the first product according to the position sensor, and controls the horizontal movement mechanism to drive the reading The fetch head reads the first barcode at the first set position. For example, the smart code reading and positioning system described in item 1 of the scope of patent application further includes a database for storing the barcode parameters of the first product. For example, the intelligent barcode reading positioning system described in item 4 of the scope of patent application, wherein in the adaptation mode, the processing unit reads correspondingly from the plurality of field of view areas including the overlapping field of view area according to the barcode parameters of the first product Position to determine the most recently read position and the next most recent read position, and store the determined first set position in the database. For example, in the smart code reading and positioning system described in item 4 of the scope of patent application, the database further stores barcode parameters related to a second product, and the second product has a second barcode. For example, in the smart code reading and positioning system described in item 6 of the scope of patent application, in the adaptation mode, when the second barcode is located in one of the overlapping field of view areas, the processing unit starts from a plurality of field of view areas including the overlapping field of view. Respectively corresponding reading positions to determine a recent reading position and a near reading position, and controlling the reading head to read the overlap from the field of view corresponding to the last reading position and the next near reading position The second bar code in the field of view is determined to be a second setting position that has a better reading performance for reading the second bar code. For example, the smart code reading and positioning system described in item 7 of the scope of patent application, wherein in the adaptation mode, the processing unit reads correspondingly from a plurality of view areas including the overlapping view area according to the barcode parameters of the second product Position to determine the most recently read position and the next most recent read position, and store the determined second setting position in the database. For example, the intelligent barcode reading positioning system described in item 8 of the scope of patent application, wherein the database further stores a production line data, and the production line data includes the conveyor belt conveying the first product and the second product in a mass production mode order of. Such as the smart code reading positioning system described in item 9 of the scope of patent application, wherein in the mass production mode, the processing unit controls the horizontal movement mechanism to drive the reading head to the first set position according to the production line data Read the first barcode at the location, and read the second barcode at the second set position. A smart code reading and positioning method, including: In an adaptation mode, plan a reading head to cover a predetermined width of a conveyor belt with the field of view areas corresponding to a plurality of reading positions, and to include at least one overlap between the field of view areas corresponding to adjacent reading positions Field of view In this adaptation mode, when a first barcode of a first product is located in one of the overlapping field of view areas, a most recent reading position and a first near reading position are determined from several field of view areas including the overlapping field of view area; and In the adjustment mode, the reading head reads the first barcode in the overlapping field of view from the field of view area corresponding to the most recent reading position and the next nearest reading position to determine the reading of the first barcode The better reading performance is a first setting position. The smart code reading and positioning method described in item 11 of the scope of patent application further includes: in a mass production mode, the reading head reads the first bar code at the first set position for decoding. As described in item 11 of the scope of patent application, the smart code reading positioning method further comprises: in the adjustment mode, according to the barcode parameters of the first product, read positions corresponding to the multiple field of view areas including the overlapping field of view area , To calculate the most recently read position and the next most recent read position, and store the determined first setting position in a database. As described in item 11 of the scope of patent application, the smart code reading and positioning method further includes: in the adaptation mode, when a second barcode of a second product is located in one of the overlapping field of view areas, from the one that includes the overlapping field of view area Several viewing areas determine a most recent reading position and a near reading position; and, the reading head reads the overlapped field of view from the viewing area corresponding to the most recent reading position and the next near reading position For the second bar code, a second setting position is determined to have a better code reading performance for reading the second bar code. For example, the smart code reading and positioning method described in item 14 of the scope of patent application further includes: in a mass production mode, knowing the order in which the conveyor belt conveys the first product and the second product according to a production line data, and controlling the The reading head respectively reads the first barcode at the first set position and reads the second barcode at the second set position.

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