CN107025415B - Seamless synchronous code reading device and method thereof - Google Patents
Seamless synchronous code reading device and method thereof Download PDFInfo
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- CN107025415B CN107025415B CN201710161232.9A CN201710161232A CN107025415B CN 107025415 B CN107025415 B CN 107025415B CN 201710161232 A CN201710161232 A CN 201710161232A CN 107025415 B CN107025415 B CN 107025415B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
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Abstract
The invention discloses a seamless synchronous code reading device and a method thereof, wherein the seamless synchronous code reading device comprises a conveying device for placing a bar code carrier, a seamless synchronous code scanning array for performing code scanning operation, a code scanning gun carrier control system and a bar code data comprehensive processing system; the seamless synchronous code scanning array comprises a code scanning gun carrier and a plurality of code scanning guns, the code scanning guns are sequentially and uniformly distributed on the code scanning gun carrier, the code scanning gun carrier can drive the code scanning guns to move, synchronous movement of a code scanning working face of the code scanning gun and the code scanning carrier is guaranteed, and the seamless code scanning is kept in an effective working range by utilizing the visual overlapping phenomenon of each code scanning gun. The invention has simple and compact structure and low production cost, and uses a plurality of low-cost code scanning guns to replace an expensive single special code scanning gun for scanning codes, thereby breaking through the limit of the movement speed of the bar code carrier, leading the code scanning working surface of the bar code gun and the bar code carrier to synchronously move, and ensuring that the bar code on the bar code carrier can still be read normally when the bar code carrier moves.
Description
Technical Field
The invention relates to the field of bar codes, in particular to a seamless synchronous code reading device and a method thereof.
Background
The bar code reader, i.e. the reader or the bar code scanner, is a machine for reading bar code information, and utilizes the emitted infrared light source, then utilizes the chip to decode according to the reflected result, and finally returns the correct character represented by the bar code. There are four physical factors that limit code scanning performance when scanning codes: the visual angle, resolution, imaging period and decoding period limit the space range of code scanning by the vision and resolution of the code scanning gun, and the code scanning gun cannot recognize the bar code beyond the space range; the imaging period and the decoding period limit the working time window of the code scanning gun, and the code scanning gun cannot read the bar code with the temporary time smaller than the working time window. For the situation that the object needing to be scanned needs to move at a high speed, the scanning of the object is difficult to achieve, so that the visual angle and the resolution of the scanning gun are improved, the imaging period and the decoding period are reduced, the research direction for improving the performance of the scanning gun is the direction of the most common efforts in the industry, and the limitation of the four physical parameters is still not exceeded, so that the high-speed scanning is difficult to be widely applied in the industry.
Disclosure of Invention
The invention aims to solve the problem that the existing code scanning gun cannot avoid the limitation of physical parameters such as visual angle, imaging period and decoding period in principle, and provides a seamless synchronous code reading device and a method thereof, so as to solve the problem of bar code reading in a high-speed environment commonly encountered in the industry.
The invention realizes the above purpose through the following technical scheme: a seamless synchronous code reading method comprises the following steps:
1) Determining the length l of a synchronous interval of a seamless synchronous code reading array according to the maximum speed of movement of a bar code carrier, wherein l is more than or equal to v x t, v is the maximum movement speed of a bar code on the bar code carrier, and t is the maximum working time window of a single code scanning gun;
2) According to the determined total length s of the code scanning gun carriers in the seamless synchronous code reading array, the total length s of all the code scanning gun carriers is the length of a single code scanning gun which completes one cycle of motion, and all the total length s of the code scanning gun carriers must meet the condition: s > 2*l;
3) Setting the scanning working face of the seamless synchronous code reading array to be parallel to the movement direction of the bar code carrier, and keeping the nearest distance between the single scanning gun of the seamless synchronous code reading array and the bar code carrier as d, wherein d is the optimal working distance of the single scanning gun;
4) Determining the interval i between two adjacent code scanning guns in a seamless synchronous code reading array, and ensuring that i is less than d x a, wherein a is the visual angle of a single code scanning gun;
5) Sequentially fixing a plurality of code scanning guns on a code scanning gun carrier according to the determined interval i between two adjacent code scanning guns;
6) The code scanning working face of the seamless synchronous code reading array and the bar code carrier are controlled to synchronously move by a code scanning gun carrier control system;
7) Receiving scanning results of all code scanning guns by using a bar code data comprehensive processing system, and outputting a final code reading result;
8) The code scanning gun carrier is in circulating motion under the control of the code scanning gun carrier control system, so that the seamless synchronous code reading array can realize the seamless synchronous code reading of all the bar code carriers.
Furthermore, the code scanning working surface of the seamless synchronous code reading array in the step 6 and the bar code carrier can also move at different speeds, but the relative movement speed of the two is required to be lower than the maximum working speed required by the code scanning gun.
Further, the final display result of the bar code on any bar code carrier is obtained by analyzing the common scanning result of all bar code scanning guns through the bar code data comprehensive processing system.
A seamless synchronous code reading device comprises a conveying device for placing a bar code carrier, a seamless synchronous code scanning array for scanning a code, a code scanning gun carrier control system for controlling a code scanning working face of the seamless synchronous code scanning array to synchronously move with the bar code on the bar code carrier, and a bar code data comprehensive processing system for receiving scanning results of all the code scanning guns; the seamless synchronous code scanning array comprises a code scanning gun carrier and a plurality of code scanning guns, the code scanning gun carrier is arranged near the conveying device, the code scanning guns are sequentially and uniformly distributed on the code scanning gun carrier, the code scanning gun carrier can drive the code scanning guns to move, synchronous movement of a code scanning working face of the code scanning guns and the bar code carrier is guaranteed, seamless code scanning is kept in an effective working range by utilizing the visual overlapping phenomenon of each code scanning gun, and a bar code data comprehensive processing system receives the common code scanning result of each code scanning gun and analyzes and obtains the final result of a bar code.
Further, the conveying device is a linear conveyor belt, bar code carriers are equidistantly placed on the linear conveyor belt, the bar code scanning gun carriers are cylindrical carriers capable of rotating, the bar code scanning guns are uniformly distributed on the cylindrical carriers along the circumferential direction, and the cylindrical carriers rotate along the conveying direction of the linear conveyor belt.
Further, the conveying device is a linear conveyor belt, the bar code carriers are placed on the linear conveyor belt at equal intervals, the bar code scanning gun carriers are conveyor belts driven by two rotating wheels, the bar code scanning guns are uniformly distributed on the outer sides of the conveyor belts, and one side, close to the linear conveyor belt, of the conveyor belts moves in the same direction and speed as those of the linear conveyor belt.
Further, the conveying device is a 180-degree turning conveyor belt, the bar code carriers are equidistantly placed on the 180-degree turning conveyor belt, the bar code scanning gun carriers are cylindrical carriers capable of rotating, the cylindrical carriers are arranged at the corners of the 180-degree turning conveyor belt and concentric with the corners, the bar code scanning guns are uniformly distributed on the cylindrical carriers along the circumferential direction, and the moving directions and the moving speeds of the cylindrical carriers and the 180-degree turning conveyor belt at the corners are the same.
The invention has the beneficial effects that: the invention has simple and compact structure and low production cost, and uses a plurality of low-cost code scanning guns to replace an expensive single special code scanning gun for scanning codes, thereby breaking through the limit of the movement speed of the bar code carrier, leading the code scanning working surface of the bar code gun and the bar code carrier to synchronously move, and ensuring that the bar code on the bar code carrier can still be read normally when the bar code carrier moves; a plurality of code scanning guns on the code scanning gun carrier form a seamless synchronous code scanning array, and the working angles among the plurality of code scanning guns are utilized to mutually overlap and reappear the mutual overlapping of the code scanning working surfaces, so that a continuous observable bar code is formed; the bar code gun carrier control system controls the bar code gun to rotate at the same speed as the bar code carrier, so that the relative linear speed of the bar code gun and the bar code carrier is kept the same, namely the bar code scanning working face and the bar code carrier are kept relatively static, synchronous bar code scanning is realized, and even if the bar code carrier moves at a high speed, the bar code scanning gun carrier is adjusted to rotate at the same speed, so that the bar code scanning efficiency and the bar code scanning quality are greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural view of a third embodiment of the present invention.
In the figure, a 1-conveying device, a 2-bar code carrier, a 3-code scanner carrier and a 4-code scanner.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings:
a seamless synchronous code reading method as shown in figures 1-3 comprises the following steps:
1) Determining the length l of a synchronous interval of a seamless synchronous code reading array according to the maximum speed of the movement of the bar code carrier 2, wherein l is more than or equal to v x t, v is the maximum movement speed of the bar code on the bar code carrier 2, and t is the maximum working time window of a single code scanning gun 4;
2) According to the determined total length s of the code scanning gun carriers 3 in the seamless synchronous code reading array, the total length s of all the code scanning gun carriers 3 is the length of a single code scanning gun 4 for completing one cycle motion, and the total length s of all the code scanning gun carriers 3 must meet the condition: s > 2*l;
3) Setting the scanning working face of the seamless synchronous code reading array to be parallel to the movement direction of the bar code carrier 2, and keeping the nearest distance between the single scanning gun 4 of the seamless synchronous code reading array and the bar code carrier 2 as d, wherein d is the optimal working distance of the single scanning gun 4;
4) Determining the interval i between two adjacent code scanning guns 4 in a seamless synchronous code reading array, and ensuring that i is less than d x a, wherein a is the visual angle of a single code scanning gun 4;
5) Sequentially fixing a plurality of code scanning guns 4 on the code scanning gun carrier 3 according to the determined interval i between two adjacent code scanning guns 4;
6) The code scanning working face of the seamless synchronous code reading array is controlled to synchronously move with the bar code carrier 2 through a code scanning gun carrier control system;
7) Receiving the scanning results of all the code scanning guns 4 by using a bar code data comprehensive processing system, and outputting a final code reading result;
8) The code scanning gun carrier 3 performs circular motion under the control of the code scanning gun carrier control system, so that the seamless synchronous code reading array performs seamless synchronous code reading on all the bar code carriers 2.
The code scanning working surface of the seamless synchronous code reading array in the step 6 and the bar code carrier 2 can also move at different speeds, but the relative movement speed of the two is required to be ensured to be lower than the maximum working speed required by the code scanning gun 4.
The final display result of the bar code on any bar code carrier 2 is obtained by analyzing the common scanning result of all bar code scanning guns 4 by the bar code data comprehensive processing system.
The seamless synchronous code reading device comprises a conveying device 1 for placing a bar code carrier 2, a seamless synchronous code scanning array for scanning the code, a code scanning gun carrier control system for controlling a code scanning working surface of the seamless synchronous code scanning array to synchronously move with the bar code on the bar code carrier 2, and a bar code data comprehensive processing system for receiving scanning results of all code scanning guns 4; the seamless synchronous code scanning array comprises a code scanning gun carrier 3 and a plurality of code scanning guns 4, the code scanning gun carrier 3 is arranged near the conveying device 1, the code scanning guns 4 are sequentially and uniformly distributed on the code scanning gun carrier 3, the code scanning gun carrier 3 can drive the code scanning guns 4 to move so as to ensure synchronous movement of a code scanning working face of the code scanning gun 4 and the bar code carrier 2, the seamless code scanning is kept in an effective working range by utilizing the visual overlapping phenomenon of each code scanning gun 4, and the bar code data comprehensive processing system receives the common code scanning result of each code scanning gun 4 and analyzes the final result of the bar code.
The invention is further illustrated by the following examples:
examples
As shown in fig. 1, the conveying device 1 is a linear conveyor belt, the bar code carriers 2 are equidistantly placed on the linear conveyor belt, the bar code scanning gun carriers 3 are cylindrical carriers capable of rotating, the bar code scanning guns 4 are uniformly distributed on the cylindrical carriers along the circumferential direction, the cylindrical carriers rotate along the conveying direction of the linear conveyor belt, the bar code scanning working face of one bar code scanning gun 4 nearest to the bar code carriers 2 is ensured to be kept relatively static with the bar code carriers 2 during rotation of the cylindrical carriers, the bar code scanning gun and a plurality of bar code scanning guns nearby the bar code scanning gun are utilized to scan a bar code carrier passing through, and the bar code data comprehensive processing system receives all bar code scanning results to obtain the final bar code scanning result of the bar code carrier. Under the embodiment, the linear conveyor belt can rotate at a higher speed, and the code scanning result can still be kept accurate, but the movement speed of the bar code needs to be ensured not to exceed the maximum working time window required by a single bar code gun in code scanning.
Examples
As shown in fig. 2, the conveying device 1 is a linear conveyor belt, the bar code carriers 2 are equidistantly placed on the linear conveyor belt, the code scanning gun carriers 3 are conveyor belts driven by two rotating wheels, the code scanning guns 4 are uniformly distributed on the outer sides of the conveyor belts, and one side, close to the linear conveyor belt, of the conveyor belts moves in the same direction and speed as the linear conveyor belt. In this embodiment, the linear conveyor has a certain linear transmission distance, and the barcode scanning gun 4 can move along with the barcode carrier at the same speed, so that the barcode carrier can accurately read the barcode on the barcode carrier even if the barcode carrier moves at a higher speed.
Examples
As shown in fig. 3, the conveying device 1 is a 180-degree turning conveyor belt, the bar code carriers 2 are equidistantly placed on the 180-degree turning conveyor belt, the code scanning gun carrier 3 is a rotatable cylindrical carrier, the cylindrical carrier is arranged at the corner of the 180-degree turning conveyor belt and concentric with the corner, the code scanning guns 4 are uniformly distributed on the cylindrical carrier along the circumferential direction, and the movement direction and the movement speed of the cylindrical carrier and the 180-degree turning conveyor belt at the corner are the same. In the embodiment, the bar code on the bar code carrier can be accurately read as long as the time required by any bar code carrier 2 in the 180-degree turning conveyor belt at the corner does not exceed the maximum working time required by a single bar code gun during bar code scanning.
The above embodiments are only preferred embodiments of the present invention, and are not limiting to the technical solutions of the present invention, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present invention.
Claims (7)
1. A seamless synchronous code reading method is characterized by comprising the following steps:
1) Determining the length l of a synchronous interval of a seamless synchronous code reading array according to the maximum speed of the movement of the bar code carrier (2), wherein l is more than or equal to v x t, v is the maximum movement speed of the bar code on the bar code carrier (2), and t is the maximum working time window of a single bar code scanning gun (4);
2) According to the determined total length s of the code scanning gun carriers (3) in the seamless synchronous code reading array, the total length s of all the code scanning gun carriers (3) is the length of a single code scanning gun (4) which completes one cycle of motion, and the total length s of all the code scanning gun carriers (3) must meet the condition: s > 2*l;
3) Setting the scanning working face of the seamless synchronous code reading array to be parallel to the movement direction of the bar code carrier (2), and keeping the nearest distance between the single scanning gun (4) of the seamless synchronous code reading array and the bar code carrier (2) as d, wherein d is the optimal working distance of the single scanning gun (4);
4) Determining the interval i between two adjacent code scanning guns (4) in a seamless synchronous code reading array, and ensuring that i is less than d is a, wherein a is the visual angle of a single code scanning gun (4);
5) Sequentially fixing a plurality of code scanning guns (4) on a code scanning gun carrier (3) according to the determined interval i between two adjacent code scanning guns (4);
6) The code scanning working face of the seamless synchronous code reading array and the bar code carrier (2) are controlled to synchronously move by a code scanning gun carrier control system;
7) Receiving scanning results of all code scanning guns (4) by utilizing a bar code data comprehensive processing system, and outputting a final code reading result;
8) The code scanning gun carrier (3) performs circular motion under the control of the code scanning gun carrier control system, so that the seamless synchronous code reading of all the bar code carriers (2) by the seamless synchronous code reading array is realized.
2. The seamless synchronous code reading method according to claim 1, wherein: the code scanning working face of the seamless synchronous code reading array in the step 6 and the bar code carrier (2) move at different speeds, but the relative movement speed of the two is required to be lower than the maximum working speed required by the code scanning gun (4).
3. The seamless synchronous code reading method according to claim 1, wherein: the final display result of the bar code on any bar code carrier (2) is obtained by analyzing the common scanning result of all bar code scanning guns (4) by a bar code data comprehensive processing system.
4. A seamless synchronous code reading apparatus according to any one of claims 1 to 3, characterized in that: the system comprises a conveying device (1) for placing a bar code carrier (2), a seamless synchronous bar code scanning array for scanning, a bar code scanning gun carrier control system for controlling a bar code scanning working face of the seamless synchronous bar code scanning array to synchronously move with bar codes on the bar code carrier (2), and a bar code data comprehensive processing system for receiving scanning results of all bar code scanning guns (4); the seamless synchronous code scanning array comprises a code scanning gun carrier (3) and a plurality of code scanning guns (4), the code scanning gun carrier (3) is arranged near the conveying device (1), the code scanning guns (4) are sequentially and uniformly distributed on the code scanning gun carrier (3), the code scanning gun carrier (3) can drive the code scanning guns (4) to move, the code scanning working face of the code scanning guns (4) and the bar code carrier (2) synchronously move, the visual overlapping phenomenon of each code scanning gun (4) is utilized, seamless code scanning is kept in an effective working range, and the bar code data comprehensive processing system receives the common code scanning results of each code scanning gun (4) and analyzes the final bar code results.
5. The seamless synchronous code reading apparatus according to claim 4, wherein: the conveying device (1) is a linear conveyor belt, bar code carriers (2) are equidistantly placed on the linear conveyor belt, a code scanning gun carrier (3) is a cylindrical carrier capable of rotating, the code scanning guns (4) are uniformly distributed on the cylindrical carrier along the circumferential direction, and the cylindrical carrier rotates along the conveying direction of the linear conveyor belt.
6. The seamless synchronous code reading apparatus according to claim 4, wherein: the conveying device (1) is a linear conveyor belt, the bar code carriers (2) are equidistantly placed on the linear conveyor belt, the code scanning gun carriers (3) are conveyor belts driven by two rotating wheels, the code scanning guns (4) are uniformly distributed on the outer side of the conveyor belt, and one side, close to the linear conveyor belt, of the conveyor belt moves in the same direction and speed as those of the linear conveyor belt.
7. The seamless synchronous code reading apparatus according to claim 4, wherein: the conveying device (1) is a 180-degree turning conveyor belt, the bar code carriers (2) are equidistantly placed on the 180-degree turning conveyor belt, the bar code gun carriers (3) are cylindrical carriers capable of rotating, the cylindrical carriers are arranged at the corners of the 180-degree turning conveyor belt and concentric with the corners, the bar code guns (4) are uniformly distributed on the cylindrical carriers along the circumferential direction, and the movement directions and the movement speeds of the cylindrical carriers and the 180-degree turning conveyor belt at the corners are the same.
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| CN107918745B (en) * | 2017-09-18 | 2024-04-12 | 苏州斯普锐智能系统股份有限公司 | Multifunctional code scanning gun base and code scanning equipment using same |
| CN112766007A (en) * | 2019-11-06 | 2021-05-07 | 联策科技股份有限公司 | Intelligent code reading positioning system and method |
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