CN1655171A - Bar code automatic scanning system and method - Google Patents
Bar code automatic scanning system and method Download PDFInfo
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- CN1655171A CN1655171A CN 200410015372 CN200410015372A CN1655171A CN 1655171 A CN1655171 A CN 1655171A CN 200410015372 CN200410015372 CN 200410015372 CN 200410015372 A CN200410015372 A CN 200410015372A CN 1655171 A CN1655171 A CN 1655171A
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 38
- 230000006698 induction Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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- 238000012550 audit Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
A bar automatic scanning system includes multiple automatic scanning devices for monitoring the production situation of multiple production lines, in which, each scanning device includes a sensor for inducing if there are products flowing through the scan device, a bar identifier for automatically scanning said produce bar when a product flowing through the device, an indicating light used to turn on the red lamp when the bar identifier can not scan the product bar to instruct operators to scan the bar by hand and a production line stop control switch for starting and stopping its operation. Said sensor, the bar identifier, the indication lamp and line stop control switch are mechanically connected by a scan frame and inter-transfer production information via data circuit in a control box which can scan bars of different products or bars on different places or directions of a same product.
Description
[technical field]
The present invention relates to a kind of bar code automatic scanning system and method, relate in particular to a kind of bar code automatic scanning system and method that is used for the manufacturing industry production line.
[background technology]
Barcode technology is a kind of automatic identification technology that produces and grow up in computer utility and practice, have advantages such as high input speed, accuracy height, cost are low, good reliability, be widely used in fields such as commerce, postal service, taking care of books, storage, industrial processes control, traffic at present, in current automatic identification technology, occupied critical role.
Use the bar code automatic scanning system and can improve turnout and production efficiency in control of manufacturing industry production run and industrial automation, its fundamental purpose is: (1) follow-up of quality: can follow the tracks of information such as product type, production site, date of manufacture, teams and groups' production line, Production Version, batch and sequence number; (2) produce real time dynamic tracing: the practical condition that can from computing machine, learn product at any time; (3) client tracking: name, address and the Quantity Shipped that can from computing machine, obtain using the client of this product at any time; (4) report capability: provide all kinds of managerial reports for the administration and supervision authorities audit.General data acquisition and the tracking of adopting fixed bar code scanner not have artificial intervention of this type of bar code automatic scanning system.This fixed bar code scanner is provided with scanning bracket and supports bar code automatic identification device and other associated component, and is installed on a certain position of production line.When product (transports as travelling belt) when arriving bar code scanner in some way, bar code automatic identification device autoscan is pasted on the bar code on the product, and by internal network the bar code information of obtaining is sent to that subscriber computer is stored or analyzing and processing.
Along with the continuous development of manufacturing technology, the flexibility of production equipment is more and more higher, and same set of equipment or same production line often can be made the product of different cultivars.Because various products may exist than big-difference on external form, size, even and if with a kind of product, show that the bar code of different information also may be pasted on the diverse location or the different directions of product, this just has higher requirement to the bar code automatic scanning system.Traditional fixed bar code scanner lacks necessary flexibility, after the good operation of debugging, generally can only scan bar code a kind of or that a few position is close, change or the barcode position change just might be read less than needed bar code information greatly the time at product variety.At this moment common solution is to change whole bar code scanner, or changes the relative position of original each assembly of bar code scanner, so not only increases manufacturing cost, and has reduced production efficiency.In addition, because all there is certain bar code drain sweep phenomenon in each bar code automatic sweep apparatus, when this kind situation repeatedly took place, the actual job situation that producing line operating personnel or managerial personnel can not effective monitoring, follow the tracks of Related product finally can cause the raising of defective products rate.Therefore, be necessary to provide a kind of bar code automatic scanning system and method that is applied to the manufacturing industry production line, it not only can conveniently scan the bar code of different product on the production line, or identical product is pasted on the bar code of diverse location or different directions, give the alarm in the time of can discerning the failure of product bar code automatically in system simultaneously, prompting product lineman does timely manually benefit of personnel and sweeps bar code.
[summary of the invention]
Fundamental purpose of the present invention is to provide a kind of bar code automatic scanning system and method, and it can be used for the product bar code of autoscan manufacturing industry production line, to control and to follow the tracks of in the goods situation.
Another object of the present invention is to provide a kind of bar code automatic scanning system and method, it can conveniently scan the bar code of different product on the production line, and perhaps identical product is pasted on the product bar code of diverse location or different directions.
A further object of the present invention is to provide a kind of bar code automatic scanning system and method, and it can give the alarm when scanning less than the product bar code automatically, and prompting is produced the line operating personnel and in time handled.
For achieving the above object, the invention provides a kind of bar code automatic scanning system, it comprises: at least one client computer, and the bar code information that be used to receive, reading scan is arrived, and receive user's input information; One server that links to each other with above-mentioned client computer is moving a plurality of application softwares, is used for management and control bar code automatic scanning system operation situation; Reach a plurality of automatic sweep apparatuses that an internal network is connected with client computer that pass through, be used to read the product bar code information.
Wherein, each automatic sweep apparatus comprises: a sensor, and whether be used for induction has product this automatic sweep apparatus of flowing through; Two screen bar code recognizers are used for being pasted on bar code on this product when sensor sensing autoscan when having product just flowing through automatic sweep apparatus; One pilot lamp is used for flashing the redlight during less than the product bar code of the automatic sweep apparatus of flowing through when screen bar code recognizer scanning, and prompting is produced the line operating personnel and in time handled; And one stop line control switch, is used for moving when screen bar code recognizer scanning stops to produce line during less than the product bar code of the automatic sweep apparatus of flowing through.
The sensor, screen bar code recognizer, pilot lamp and stop line control switch and connect by the one scan rack mechanical transmit the operation signal mutually by the data circuit in the control enclosure that is installed on this scanning bracket simultaneously.This scanning bracket is made up of orthogonal two montants and two cross bars, and a screen bar code recognizer all is installed on each cross bar, and the direction of scanning of two screen bar code recognizers is relative up and down.Be equipped with knob on each cross bar and indicate scale, thereby be convenient to regulate the product bar code that the position scanning of screen bar code recognizer on this cross bar is pasted on diverse location.Screen bar code recognizer can horizontally rotate, and is convenient to scan the product bar code that is pasted on different directions.
In addition, the present invention also provides a kind of product bar code of utilizing bar code automatic scanning system autoscan production line, to control and to follow the tracks of method in the goods situation, described bar code automatic scanning system provides an automatic sweep apparatus, it comprises that at least one sensor, at least one bar code recognizer, a pilot lamp and stop line control switch, this bar code automatic scanning method comprises the steps: to regulate the position of screen bar code recognizer on scanning bracket, makes this screen bar code recognizer can scan the product bar code of the automatic sweep apparatus of flowing through; Sensor sensing is to the product automatic sweep apparatus of flowing through is arranged; This product bar code of screen bar code recognizer autoscan; If screen bar code recognizer can not scan the product bar code of the automatic sweep apparatus of flowing through, then send simultaneously signal to pilot lamp with stop line control switch; Pilot lamp is shinny, stops line control switch and stops to produce the line operation; One manual scanister is provided, is used to produce the line operating personnel and manually mends and sweep automatic sweep apparatus and fail to scan the product bar code of obtaining; And produce line and resume operation, flow through next product of automatic sweep apparatus of sensor sensing.
[description of drawings]
Fig. 1 is the hardware device Organization Chart of bar code automatic scanning system of the present invention.
Fig. 2 is each assembly connection diagram of automatic sweep apparatus of bar code automatic scanning system of the present invention.
Fig. 3 is the concrete implementing procedure figure of bar code automatic scanning method of the present invention.
[embodiment]
As the explanation of this better embodiment, choose a bar code automatic scanning system that is applied to the P.e.c. board assembly line and be described.After starting, this production line can move with a setting speed, the moment of printed circuit board (PCB) in the production and assembly process is transmitted band and delivers to the bar code automatic sweep apparatus that is in a certain position of production line, read bar code information on the printed circuit board (PCB) by this bar code automatic sweep apparatus, with control with follow the tracks of printed circuit board (PCB) actual production operation situation.Below in conjunction with legend essence spirit of the present invention is elaborated.
As shown in Figure 1, be the hardware device Organization Chart of bar code automatic scanning system of the present invention.This bar code automatic scanning system comprises server 12 and a plurality of automatic sweep apparatus 14 that a client computer 10, links to each other with this client computer 10.Client computer 10 is connected with automatic sweep apparatus 14 by an internal network 16, thus the printed circuit board (PCB) production operation situation that can control and follow the tracks of many production lines.
Whether sensor 20 is used to respond to has printed circuit board (PCB) to flow through on the line conveyor, if sensor 20 is sensed the printed circuit board (PCB) automatic sweep apparatus 14 of just flowing through, then send an induced signal, by the bar code on one of them screen bar code recognizer 22 autoscan printed circuit board (PCB).Each screen bar code recognizer 22 comprises an autoscan head and a controller (not shown).When receiving the induced signal of sensor 20 transmissions, the autoscan head reads the bar code of this printed circuit board (PCB) automatically, and bar code information is sent to client computer 10 by internal network 16.If the autoscan head can not read the bar code of this printed circuit board (PCB), then controller send a signal to simultaneously pilot lamp 24, hummer 26 and link to each other with this production line board stop line control switch 28.Immediately, pilot lamp 24 flashes the redlight, and hummer 26 pipes, and line conveyor is out of service, and prompting is produced the line operating personnel and in time handled.
Each automatic sweep apparatus 14 (not shown) that links to each other with a manual scanister in addition.When screen bar code recognizer 22 can not scan the printed circuit board (PCB) bar code of the automatic sweep apparatus 14 of flowing through, produce the line operating personnel and rely on this manual scanning device benefit to sweep bar code, and the bar code information of obtaining is sent to client computer 10 by internal network 16.Afterwards, stop line control switch 28 and start production line, travelling belt resumes operation.
As shown in Figure 2, be each assembly connection diagram of automatic sweep apparatus of bar code automatic scanning system of the present invention.These automatic sweep apparatus 14 each assemblies connect by the one scan rack mechanical.Described scanning bracket is made up of two montants and two perpendicular horizontal cross bars.Bar is provided with erecting frame, is convenient to connect and install between bar the different assemblies of automatic sweep apparatus 14.The control enclosure erecting frame 32 that sensor 20, pilot lamp 24 and being used to installed control enclosure 30 places the montant diverse location.Pilot lamp 24 is positioned at a wherein montant top, produces the line operating personnel when being convenient to it and flashing the redlight and can discover easily.Sensor 20 is in a certain position of one of them montant between two cross bars, and whether travelling belt sensor 20 when passing between two cross bars can be sensed has printed circuit board (PCB) to flow through.Because the bar code of dissimilar printed circuit board (PCB)s may be pasted on different plate faces, therefore a screen bar code recognizer 22 is installed, and the autoscan head direction of two screen bar code recognizers 22 is relative up and down on each cross bar.In addition, cross bar is provided with knob and indicates scale, is convenient to adjust the position of screen bar code recognizer 22 on cross bar, with avoid owing to printed circuit board (PCB) varies in size or bar code is pasted on printed circuit board (PCB) plate face diverse location occur scanning less than situation.The autoscan head of screen bar code recognizer 22 can horizontally rotate maximum to 90 degree on cross bar, can read the printed circuit board (PCB) bar code that is pasted on different directions by rotational automatic scanner head.
As shown in Figure 3, be the concrete implementing procedure figure of bar code automatic scanning method of the present invention.At first, start and produce the line operation, the bar code automatic scanning system begins operation simultaneously.Before continuous sweep product bar code, need regulate the position of screen bar code recognizer 22 on the scanning bracket cross bar.At this moment can adjust the far and near or height of the autoscan head of top or following screen bar code recognizer 22 by the knob on the adjusting cross bar.When the bar code direction of pasting on the printed circuit board (PCB) flows to production line there is when intersection, can adjusts its direction of scanning (step S300) by rotational automatic scanner head.When printed circuit board (PCB) is flowed through automatic sweep apparatus 14, at first can be sensed by sensor 20, sensor 20 sends an induced signal to screen bar code recognizer 22 (step S302) by the data circuit in the control enclosure 30.The autoscan head of screen bar code recognizer 22 begins just the flowing through printed circuit board (PCB) bar code (step S304) of automatic sweep apparatus 14 of autoscan.Screen bar code recognizer 22 judges whether the autoscan head obtains printed circuit board (PCB) bar code information (step S306).If the autoscan head reads the bar code failure, then controller sends a signal to pilot lamp 24, hummer 26 simultaneously and stops line control switch 28 by the data circuit in the control enclosure 30.Immediately, pilot lamp 24 flashes the redlight, and hummer 26 begins to pipe, and closes with the line control switch 28 that stops that product line board links to each other, and travelling belt stops operation (step S308).Produce the line operating personnel and notice that pilot lamp 24 lights, or hear that hummer 26 pipes, then obtain the bar code information of this printed circuit board (PCB) by the manual scanning device, and described bar code information being sent to client computer 10 by internal network 16, the manual scanning device sends a signal to and stops line control switch 28 (step S310) simultaneously.Stop line control switch 28 and restart the product line, travelling belt resumes operation (step S312), and flow process is returned step S302 then, by the next printed circuit board (PCB) of sensor 20 induced flows through automatic sweep apparatus 14.
Behind step S306, if the autoscan head of screen bar code recognizer 22 successfully reads the printed circuit board (PCB) bar code of the automatic sweep apparatus 14 of just flowing through, then server 12 judges whether to receive the instruction (step S314) of user by the end bar code scan of client computer 10 inputs.If server 12 does not receive the instruction that the user finishes bar code scan, then flow process is returned step S302, otherwise, if server 12 receives the instruction that the user finishes bar code scan, then send a signal to and stop line control switch 28, it is out of service automatically to produce line, and flow process finishes.
Claims (10)
1. a bar code automatic scanning system comprises an automatic sweep apparatus, is used for the product bar code of autoscan production line, it is characterized in that this automatic sweep apparatus comprises:
At least one sensor, whether be used for induction has product this automatic sweep apparatus of flowing through;
At least one bar code recognizer, be used for when described sensor sensing when having product just flowing through this automatic sweep apparatus, autoscan is pasted on the bar code on this product;
One pilot lamp is used for when the scanning of described screen bar code recognizer shinnyly during less than the product bar code of this automatic sweep apparatus of flowing through, and prompting is produced the line operating personnel and in time handled;
One stops line control switch, is used for stopping to produce the line operation during less than the product bar code of this automatic sweep apparatus of flowing through when the scanning of described screen bar code recognizer; And
Described sensor, screen bar code recognizer, pilot lamp and stop line control switch and connect by the one scan rack mechanical transmit the operation signal mutually by the data circuit in the control enclosure that is installed on this scanning bracket simultaneously.
2. bar code automatic scanning system as claimed in claim 1 is characterized in that, also comprises an at least one internal network and client computer that described automatic sweep apparatus links to each other passed through, the bar code information that be used to receive, reading scan is arrived, and receive user's input information.
3. bar code automatic scanning system as claimed in claim 2 is characterized in that, also comprises a server that links to each other with described client computer, is moving a plurality of application softwares, is used for management and control bar code automatic scanning system operation situation.
4. bar code automatic scanning system as claimed in claim 1, it is characterized in that, wherein said automatic sweep apparatus also comprises a hummer, be used for giving the alarm during less than the product bar code of this automatic sweep apparatus of flowing through when the scanning of described screen bar code recognizer, prompting is produced the line operating personnel and is in time handled.
5. bar code automatic scanning system as claimed in claim 1 is characterized in that, wherein said scanning bracket is made up of orthogonal two montants and two cross bars.
6. bar code automatic scanning system as claimed in claim 5 is characterized in that, wherein on each cross bar a screen bar code recognizer is installed all.
7. bar code automatic scanning system as claimed in claim 6 is characterized in that, wherein the direction of scanning of the screen bar code recognizer on two cross bars is relative up and down.
8. bar code automatic scanning system as claimed in claim 6 is characterized in that, wherein is equipped with knob on each cross bar and indicates scale, is convenient to regulate the position of described screen bar code recognizer on this cross bar.
9. bar code automatic scanning system as claimed in claim 6 is characterized in that wherein screen bar code recognizer can horizontally rotate, and is convenient to scan the product bar code that is pasted on different directions.
10. one kind is utilized the product bar code on the bar code automatic scanning system autoscan production line, to control and to follow the tracks of method in the goods situation, described bar code automatic scanning system provides an automatic sweep apparatus, it comprises that at least one sensor, at least one bar code recognizer, a pilot lamp and stop line control switch, said modules connects by the one scan rack mechanical, transmit signal mutually by the data circuit in the control enclosure that is installed on this scanning bracket simultaneously, it is characterized in that this bar code automatic scanning method comprises the steps:
Regulate the position of described screen bar code recognizer on described scanning bracket, make this screen bar code recognizer can scan the product bar code of the described automatic sweep apparatus of flowing through;
Described sensor sensing is to the product described automatic sweep apparatus of just flowing through is arranged;
This product bar code of screen bar code recognizer autoscan;
If screen bar code recognizer can not scan the product bar code of this automatic sweep apparatus of flowing through, then send simultaneously signal to described pilot lamp with stop line control switch;
Described pilot lamp is shinny, stops line control switch and stops to produce the line operation;
One manual scanister is provided, is used to produce the line operating personnel and manually mends and sweep automatic sweep apparatus and fail to scan the product bar code of obtaining; And
The product line resumes operation, flow through next product of automatic sweep apparatus of sensor sensing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153728A CN100377160C (en) | 2004-02-13 | 2004-02-13 | Bar code automatic scanning system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153728A CN100377160C (en) | 2004-02-13 | 2004-02-13 | Bar code automatic scanning system and method |
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| Publication Number | Publication Date |
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| CN1655171A true CN1655171A (en) | 2005-08-17 |
| CN100377160C CN100377160C (en) | 2008-03-26 |
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| CNB2004100153728A Expired - Lifetime CN100377160C (en) | 2004-02-13 | 2004-02-13 | Bar code automatic scanning system and method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100538720C (en) * | 2006-09-27 | 2009-09-09 | 深圳迈瑞生物医疗电子股份有限公司 | Bar code scanner and method |
| CN102034075A (en) * | 2010-10-12 | 2011-04-27 | 金宝电子（中国）有限公司 | Bar code scanning device and method thereof |
| CN102750511A (en) * | 2012-07-12 | 2012-10-24 | 徐更宣 | Barcode detection device for carton forming production line |
| CN102930240A (en) * | 2012-09-28 | 2013-02-13 | 赛轮股份有限公司 | Tire bar-code online self-adjusting scanning system |
| CN103207982A (en) * | 2012-01-13 | 2013-07-17 | 鸿富锦精密工业（深圳）有限公司 | Two-dimensional bar code scanning method and system |
| CN104615971A (en) * | 2015-02-14 | 2015-05-13 | 中国科学院合肥物质科学研究院 | Two-dimensional code tracking and identifying device used for chemical fertilizer quality tracing system |
| CN106815616A (en) * | 2016-06-28 | 2017-06-09 | 昆山欧博精密机械电子有限公司 | Automatic sweep apparatus and automatic scanning system |
| CN107194302A (en) * | 2017-06-30 | 2017-09-22 | 新石器龙码（北京）科技有限公司 | A kind of planar array type bar code scanner |
| CN107247912A (en) * | 2017-07-12 | 2017-10-13 | 史丹利化肥宁陵有限公司 | A kind of fertilizer packaging bag two-dimensional code scanning device |
| CN108764413A (en) * | 2018-06-01 | 2018-11-06 | 上汽通用五菱汽车股份有限公司 | Part offline barcode scanning control method, server and storage medium |
| CN110363038A (en) * | 2018-04-09 | 2019-10-22 | 泰克元有限公司 | The electronic component processing bar code identifying device of sorting machine |
| CN110949037A (en) * | 2019-12-16 | 2020-04-03 | 中国工程物理研究院激光聚变研究中心 | Automatic identification and ejection device for file box |
| 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 |
| CN114200902A (en) * | 2021-12-02 | 2022-03-18 | 歌尔科技有限公司 | Assembly line station-crossing processing equipment and system |
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| KR0124368B1 (en) * | 1990-08-09 | 1997-12-11 | 이우에 사또시 | Automatic vending machine |
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| CN1243089A (en) * | 1998-07-27 | 2000-02-02 | 三星电子株式会社 | System for producing different products in small amount on one production line |
| US6626361B2 (en) * | 2000-12-11 | 2003-09-30 | The Standard Register Company | Mobile automated data collection device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100538720C (en) * | 2006-09-27 | 2009-09-09 | 深圳迈瑞生物医疗电子股份有限公司 | Bar code scanner and method |
| CN102034075A (en) * | 2010-10-12 | 2011-04-27 | 金宝电子（中国）有限公司 | Bar code scanning device and method thereof |
| CN103207982A (en) * | 2012-01-13 | 2013-07-17 | 鸿富锦精密工业（深圳）有限公司 | Two-dimensional bar code scanning method and system |
| CN102750511A (en) * | 2012-07-12 | 2012-10-24 | 徐更宣 | Barcode detection device for carton forming production line |
| CN102750511B (en) * | 2012-07-12 | 2016-01-13 | 徐更宣 | A kind of carton becomes box production line bar code detecting device |
| CN102930240A (en) * | 2012-09-28 | 2013-02-13 | 赛轮股份有限公司 | Tire bar-code online self-adjusting scanning system |
| CN102930240B (en) * | 2012-09-28 | 2015-09-16 | 赛轮金宇集团股份有限公司 | The online self-regulation scanning system of tire bar code |
| CN104615971B (en) * | 2015-02-14 | 2017-08-11 | 中国科学院合肥物质科学研究院 | A kind of Quick Response Code Tracking Recognition method for chemical fertilizer quality tracing system |
| CN104615971A (en) * | 2015-02-14 | 2015-05-13 | 中国科学院合肥物质科学研究院 | Two-dimensional code tracking and identifying device used for chemical fertilizer quality tracing system |
| CN106815616A (en) * | 2016-06-28 | 2017-06-09 | 昆山欧博精密机械电子有限公司 | Automatic sweep apparatus and automatic scanning system |
| CN107194302A (en) * | 2017-06-30 | 2017-09-22 | 新石器龙码（北京）科技有限公司 | A kind of planar array type bar code scanner |
| CN107247912A (en) * | 2017-07-12 | 2017-10-13 | 史丹利化肥宁陵有限公司 | A kind of fertilizer packaging bag two-dimensional code scanning device |
| CN110363038A (en) * | 2018-04-09 | 2019-10-22 | 泰克元有限公司 | The electronic component processing bar code identifying device of sorting machine |
| CN108764413A (en) * | 2018-06-01 | 2018-11-06 | 上汽通用五菱汽车股份有限公司 | Part offline barcode scanning control method, server and storage medium |
| CN108764413B (en) * | 2018-06-01 | 2021-09-28 | 上汽通用五菱汽车股份有限公司 | Part offline code scanning control method, server and storage medium |
| 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 |
| CN110949037A (en) * | 2019-12-16 | 2020-04-03 | 中国工程物理研究院激光聚变研究中心 | Automatic identification and ejection device for file box |
| CN114200902A (en) * | 2021-12-02 | 2022-03-18 | 歌尔科技有限公司 | Assembly line station-crossing processing equipment and system |
| CN114200902B (en) * | 2021-12-02 | 2024-03-19 | 歌尔科技有限公司 | Pipeline station-passing processing equipment and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100377160C (en) | 2008-03-26 |
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