CN1801168A - Bar code reader based on Ethernet - Google Patents
Bar code reader based on Ethernet Download PDFInfo
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- CN1801168A CN1801168A CN 200410011413 CN200410011413A CN1801168A CN 1801168 A CN1801168 A CN 1801168A CN 200410011413 CN200410011413 CN 200410011413 CN 200410011413 A CN200410011413 A CN 200410011413A CN 1801168 A CN1801168 A CN 1801168A
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Abstract
The invention relates to the field of automatic control, in particular to a bar code reader based on Ethernet, which comprises a bar code scanning terminal and a data control program, wherein the bar code scanning terminal is communicated with the data control program through the Ethernet; namely: the bar code scanning terminal is powered by a power supply module and comprises a reading module, a control module, a network module, a display module and a storage module, wherein the input end of the reading module is used for scanning and reading bar code information, the output of the reading module is connected to the network module through the control module and is communicated with a data control program, the storage module is respectively connected with the control module and the network module, and the input end of the display module is connected to the control module. The invention includes all functions from data acquisition, data control and display output, and has the characteristics of low cost, high transmission rate, convenient use and the like.
Description
Technical field
The present invention relates to automation field, is a kind of bar code reader based on Ethernet specifically.
Background technology
Existing bar code scan instrument only has the function of bar code scan, does not possess the ability of control, and only the bar code information that scanning is obtained sends to computing machine by serial line interface, is responsible for operations such as the management of data and transmission by computing machine.Require to be each barcode scanner special configuration computing machine, thereby whole system cost is higher, flexibility is poor, and the transfer rate of serial line interface is also very low, and is inconvenient to network.
Summary of the invention
Defectives such as traditional barcode scanner transfer rate is low in order to overcome, integral device cost height, networking and use inconvenience, the object of the invention be to provide a kind of brand-new comprise the Item Information collection and be controlled in bar code reader.It has gathered embedded computing technique, ethernet technology, database technology and POE technology, and the application of embedded computing technique makes bar code scan terminal possess control function such as data processing, transmission; The application of database technology makes information Control and inquiry be achieved; Ethernet and POE The Application of Technology make equipment networking and use conveniently, and transfer rate height, cost are low.
To achieve these goals, technical scheme of the present invention is as follows: comprise bar code scan terminal and Data Control program two parts, bar code scan terminal is by Ethernet and Data Control interprogram communication; That is: bar code scan terminal is powered by supply module, form by recognition module, control module, mixed-media network modules mixed-media, display module, memory module, the signal of input end for bar code information is scanned and distinguishes of recognition module, output is through control module access network module, with the Data Control interprogram communication, memory module is connected with control module, mixed-media network modules mixed-media respectively, and the input end of display module is connected to control module;
Data Control program idiographic flow is: the Data Control program is preserved a large amount of Item Information and the reveal codes of liquid crystal display, at first the Data Control program is waited for the bar code information that sends over from bar code scan terminal of ethernet port, when receive the scan-data that bar code scan terminal sends over from Ethernet after, with the bar code information is that its pairing Item Information searched in keyword in the Item Information storehouse, and this Item Information is outputed to the local host end show, receive the modification information of user simultaneously to these article, then this Item Information is done to upgrade according to user's modification information, determine the demand display message according to the demonstration demand of bar code scan terminal again, from Item Information, win the display message that needs, and in the corresponding code library of display message, search the code and the display position of display message correspondence, by Ethernet video data is sent to bar code scan terminal, realize the demonstration output of bar code scan terminal.
Described supply module comprises demand power-supply controller, dc voltage changer and transformer, wherein: demand power-supply controller operation IEEE802.3af-2003 agreement, input receives the center tap from transformer, output inserts dc voltage changer, and the voltage of dc voltage changer output is other module for power supply; The TX and the RX netting twine of transformer input termination Ethernet are right, the secondary mixed-media network modules mixed-media that connects; Described memory module comprises flash memory and static random-access memory, wherein flash memory storage has embedded OS and bar code scan terminal control program, be connected with static random-access memory by address wire, data line, and communicate by letter with control module and mixed-media network modules mixed-media respectively;
Described bar code scan terminal control program flow process is: at first bar code scan terminal remains at the circular wait state, when scan instruction is interrupted, carry out bar code scan by control module control recognition module, when bar code information is imported, control module is according to the agreement of serial communication, read in bar code information from the recognition module, and it is carried out pre-service; Then, bar code information is sent to host side Data Control program by Ethernet, for data retrieval submits necessary information, wait for again and receive the video data that sends over from host side Data Control program, call explicit function, control display module according to reveal codes and display position and information is outputed to LCDs show; Described control module is core with the microprocessor, links to each other with recognition module, mixed-media network modules mixed-media, display module, memory module respectively; Described display module comprises LCDs, liquid-crystal controller, first～two-section driver, wherein liquid-crystal controller is exported the termination LCDs, obtain display message by serial line interface from control module, be connected with first～two-section driver respectively with data bus by control; Described mixed-media network modules mixed-media is core with the network controller, links to each other with control module, memory module.
The present invention relates to following several gordian techniquies:
1) embedded computing technique is combined with scanning recognition technology, substitute the solution that traditional bar code scan equipment and computer directly link to each other, for bar code reader provides the low-cost design scheme;
2) bar code scan terminal is linked into Ethernet, and then the high-speed communication of realization and host side Data Control program, and can power to bar code scan terminal by Ethernet;
3) application of database technology makes the Data Control program be achieved the search and the renewal of bulk information.
The present invention is the bar code reader that is used for finishing Item Information collection, storage, control.The core technology of this bar code reader--based on embedded computing technique, ethernet technology and the POE technology of Ethernet, this technology combines with tradition scanning recognizing apparatus and database technology, embodies following advantage:
1. control conveniently.The application of embedded computing technique makes controlling conveniently of scan display system.
2. high-speed transfer.The transfer rate of 100Mbit/s can fully satisfy the data information transfer demand.
3. networking is convenient.Widely used Ethernet make bar code scan terminal easily access network link to each other with host side Data Control program.
4. reduce cost.Many cover bar code scan terminals can link to each other with same main frame by Ethernet simultaneously, and needn't be equipped with a computing machine for every suit bar code scan terminal; The POE The Application of Technology has been saved erected cost from the cable aspect is installed, thereby can have been reduced the whole cost of system significantly.
5. convenient control.The application of database technology makes the control of complex information and inquiry be achieved in the Data Control program.
6. be widely used.Except automation field, also can be applicable to a plurality of fields such as logistics, bibliogony, retail trade and catering trade.
Because the present invention has above advantage, makes the control system slave unit, is installed to normal operation and repair and maintenance thereof, all embodies superiority.As:
1. saving hardware investment.Many cover bar code scan terminals can link to each other with same main frame by Ethernet simultaneously, are responsible for information Control by same Data Control program, and needn't be equipped with computing machine for every suit bar code scan terminal, thereby make whole cost reduce significantly.
2. saving erected cost.General Ethernet connected mode makes bar code scan terminal access network easily, only need the bar code scan terminal access network based on ethernet to be got final product by twisted-pair feeder, the POE The Application of Technology has also further been saved the expense of power cable, thereby has reduced the labour cost and the cable expense of installing.
3. saving maintenance costs.Connect and the simplification of power supply mode has not only reduced the chance that breaks down, for the maintenance of system also provides condition easily, and then the expense of saving system maintenance.
4. handled easily.Because the versatility of Ethernet, field data can clog-freely directly be sent to host side, is convenient to managerial personnel's retrieve data, controls.
Description of drawings
Fig. 1 is the hardware block diagram of bar code scan terminal of the present invention.
Fig. 2 is the circuit theory diagrams of supply module in the bar code scan terminal of the present invention.
Fig. 3 is the circuit theory diagrams of memory module in the bar code scan terminal of the present invention.
Fig. 4 is the circuit theory diagrams of control module in the bar code scan terminal of the present invention.
Fig. 5 is the circuit theory diagrams of display module in the bar code scan terminal of the present invention.
Fig. 6 is the circuit theory diagrams of mixed-media network modules mixed-media in the bar code scan terminal of the present invention.
Fig. 7 is the hierarchy chart of the hardware elementary diagram of bar code scan terminal of the present invention.
Fig. 8 is a control program process flow diagram in the bar code scan terminal of the present invention.
Fig. 9 is a Data Control program flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As shown in Figure 1, the present invention includes bar code scan terminal and Data Control program two parts, bar code scan terminal is by Ethernet and Data Control interprogram communication; That is: bar code scan terminal is powered by supply module, form by recognition module, control module, mixed-media network modules mixed-media, display module, memory module, the signal of input end for bar code information is scanned and distinguishes of recognition module, output is through control module access network module, with the Data Control interprogram communication, memory module is connected with control module, mixed-media network modules mixed-media respectively, and the input end of display module is connected to control module.Bar code scan terminal runs on the embedded real-time multi-task operating system environment, mainly be responsible for bar code information scanning, decoding, pre-service, send data to the upper layer data control program and wait for and receive the reveal codes that the upper layer data control program sends.Bar code scan terminal is by scanning and distinguish bar code information, through signal shaping and decoding and after control module is handled, send to the Data Control program of computer terminal through Ethernet by mixed-media network modules mixed-media, for data retrieval submits necessary information, then wait for the data that computer terminal Data Control program sends over, the reveal codes and the display position that wherein comprise the pairing demand display message of this data message, control module is a foundation with these information, the demonstration output of control display module.
The Data Control program receives the bar code information that is sent by bar code scan terminal, search and the information of the pairing article of this bar code information in the new database more, win the information that demand shows again, by searching to the display message storehouse, find and send the corresponding code of display message and display position to bar code scan terminal, and finish information by bar code scan terminal and show by Ethernet.The Data Control program can also provide good man computer interface for managerial personnel in addition, makes things convenient for its content of understanding current database also manually it to be upgraded, and makes things convenient for the inquiry and the management of data.Idiographic flow is as shown in Figure 9: the Data Control program is preserved a large amount of Item Information and the reveal codes of liquid crystal display, at first wait for the bar code information that sends over from bar code scan terminal of ethernet port, when receive the scan-data that bar code scan terminal sends over from Ethernet after, with the bar code information is that its pairing Item Information searched in keyword in the Item Information storehouse, and this Item Information is outputed to the local host end show, receive the modification information of user simultaneously to these article, then this Item Information is done to upgrade according to user's modification information, determine the demand display message according to the demonstration demand of bar code scan terminal again, from Item Information, win the display message that needs, and in the corresponding code library of display message, search the code and the display position of display message correspondence, by Ethernet video data is sent to bar code scan terminal, realize the demonstration output of bar code scan terminal.The information search employing database technology of Data Control program can be done with conveniently management convenient inquiry and renewal to various information.
Inside connection layout below in conjunction with each module comes it is done to introduce:
-supply module, as shown in Figure 2, this module comprises demand power-supply controller U1, dc voltage changer U2 and transformer T, wherein: demand power-supply controller U1 operation IEEE802.3af-2003 agreement, input receives the center tap from transformer T, output inserts dc voltage changer U2, and the voltage of dc voltage changer U2 output is other module for power supply; The TX and the RX netting twine of transformer T input termination Ethernet are right, the secondary mixed-media network modules mixed-media that connects.
Supply module is deferred to IEEE802.3af-2003 protocol specification (IEEE802.3af-2003 is the POE agreement), and supply module is responsible for work such as detection in the IEEE802.3af-2003 agreement and voltage transitions.Can realize by the POE technology, by twisted-pair feeder supply with+the 48V direct current is converted into other modules of system in this module required+5V and+the 3.3V power supply, Ethernet supplies with+the 48V power supply through TX and RX netting twine to after inserting supply module, take out from transformer T center tap, through demand power-supply controller U1 (TPS237X series controller) and peripheral components, realize the detection and the power supply state monitoring of power demands, and general+48V access dc voltage changer U2 (UCC3809), finally be converted to the required supply voltage of other modules of bar code reading terminal;
-memory module, as shown in Figure 3, comprise flash memory U3 (AM29DL163D) and static random-access memory U4 (CY7C1061AV33), wherein flash memory U3 stores embedded OS and bar code scan terminal control program, be connected with static random-access memory U4 by address wire, data line, and communicate by letter with control module and mixed-media network modules mixed-media respectively.Flash memory U3 also stores data necessary information in the control program of storage embedded OS and bar code scan terminal; Static random-access memory U4 provides running space for the control program of operating system and bar code scan terminal;
As shown in Figure 8, the bar code scan terminal control program runs on Nucleus embedded real-time multi-task operating system environment, the main scanning of being responsible for bar code information, pre-service, send data to the upper layer data control program and wait for the reveal codes that receives the transmission of upper layer data control program, described control program flow process is: at first bar code scan terminal remains at the circular wait state, when scan instruction is interrupted, carry out bar code scan by control module control recognition module, when bar code information is imported, control module is according to the agreement of serial communication, read in bar code information from the recognition module, and it is carried out pre-service; Then, bar code information is sent to host side Data Control program by Ethernet, for data retrieval submits necessary information, wait for again and receive the video data (reveal codes and the display position that wherein comprise the pairing demand display message of this bar code information) that sends over from host side Data Control program, call explicit function, control display module according to reveal codes and display position and information is outputed to LCDs show.
-control module, this module is responsible for the Control work of bar code scan terminal, as shown in Figure 4, be core with Atmel company based on the microprocessor U5 (AT91M40800) of ARM7TDMI kernel, link to each other with recognition module, mixed-media network modules mixed-media, display module, memory module respectively.This microprocessor U5 has characteristics such as high speed low consumption, rich interface, is fit to very much the application of embedded Control aspect;
-recognition module, be used for the optics recognition of bar code information, the recognition module adopts the 1400 series recognition modules (being prior art) of Cipher LAB, and this module can be finished the bar code optical scanning and the detection of front end, signal amplification, filtering and the shaping of middle-end, and the work such as decoding of rear end.The bar code information that obtains after overscanning, shaping and decoding is delivered to control module by serial ports, and finishes work such as control and forwarding in control module;
-display module, as shown in Figure 5, in display module, adopt control chip based on silicon wound (Sitronix) company, comprise LCDs LCD, liquid-crystal controller U6 (ST7920), first～two-section driver U7～U8 (ST7921), liquid-crystal controller U6 output termination LCDs LCD, its embedded Chinese word library, can easily realize figure and in, English display, obtain display message by serial line interface SID and SCLK from control module, comprise content displayed code and display position, be connected with difference first～two-section driver U7～U8 with data bus by control; Described first～two-section driver U7～U8 is used for the dot lcd screen and shows, will convert parallel data to from the serial data that liquid-crystal controller U6 receives, and exports drive waveforms and give liquid crystal panel plate, and the information of finally finishing shows;
-mixed-media network modules mixed-media, as shown in Figure 6, be used for bar code scan terminal and ethernet communication, with network controller U9 (LAN91C111 of SMSC company) is core, link to each other with control module, memory module, this network controller U9 comprises physical layer transceiver and media access controller, can realize the high speed data transfer of 100Mbit/s.
Circuit connecting relation between each module as shown in Figure 7 as mentioned above, described control module links to each other with other modules with control line by data line, address wire, between control module, memory module and the mixed-media network modules mixed-media by data line D[0..15] come transfer data information; By address wire A[0..20] realize the data addressing between the above-mentioned module; RST in the control line is used for controlling the reset operation of each module chip; CS[0..6] for sheet selects control line, realize comprising the selection of network controller U9 among the flash memory U3 and static random-access memory U4 and mixed-media network modules mixed-media in the memory module, and then realize control each chip; WE and OE are used for controlling the write-enable of flash memory U3 and static random-access memory U4 and network controller U9 respectively and read and enable.Control module (being microprocessor U5) links to each other with recognition module, display module by serial line interface, and control module receives the data message of recognition module by RX0; Control module provides the time sequential routine by SCLK, cooperates SID to the control of display module and reading of status information.Mixed-media network modules mixed-media is by Ethernet acquisition+48V direct current supply, and+48V power supply inserts supply module, at this through voltage transitions, be converted to other modules required+3.3V voltage and+5V voltage, supply with other modules.
Claims (7)
1. bar code reader based on Ethernet, it is characterized in that: comprise bar code scan terminal and Data Control program two parts, bar code scan terminal is by Ethernet and Data Control interprogram communication; That is: bar code scan terminal is powered by supply module, form by recognition module, control module, mixed-media network modules mixed-media, display module, memory module, the signal of input end for bar code information is scanned and distinguishes of recognition module, output is through control module access network module, with the Data Control interprogram communication, memory module is connected with control module, mixed-media network modules mixed-media respectively, and the input end of display module is connected to control module;
Data Control program idiographic flow is: the Data Control program is preserved a large amount of Item Information and the reveal codes of liquid crystal display, at first the Data Control program is waited for the bar code information that sends over from bar code scan terminal of ethernet port, when receive the scan-data that bar code scan terminal sends over from Ethernet after, with the bar code information is that its pairing Item Information searched in keyword in the Item Information storehouse, and this Item Information is outputed to the local host end show, receive the modification information of user simultaneously to these article, then this Item Information is done to upgrade according to user's modification information, determine the demand display message according to the demonstration demand of bar code scan terminal again, from Item Information, win the display message that needs, and in the corresponding code library of display message, search the code and the display position of display message correspondence, by Ethernet video data is sent to bar code scan terminal, realize the demonstration output of bar code scan terminal.
2. according to the described bar code reader of claim 1 based on Ethernet, it is characterized in that: described supply module comprises demand power-supply controller (U1), dc voltage changer (U2) and transformer (T), wherein: demand power-supply controller (U1) operation IEEE802.3af-2003 agreement, input receives the center tap from transformer (T), output inserts dc voltage changer (U2), and the voltage of dc voltage changer (U2) output is other module for power supply; The TX and the RX netting twine of transformer (T) input termination Ethernet are right, the secondary mixed-media network modules mixed-media that connects.
3. according to the described bar code reader of claim 1 based on Ethernet, it is characterized in that: described memory module comprises flash memory (U3) and static random-access memory (U4), wherein flash memory (U3) stores embedded OS and bar code scan terminal control program, be connected with static random-access memory (U4), and communicate by letter with control module and mixed-media network modules mixed-media respectively by address wire, data line.
4. according to the described bar code reader of claim 3 based on Ethernet, it is characterized in that: described bar code scan terminal control program flow process is: at first bar code scan terminal remains at the circular wait state, when scan instruction is interrupted, carry out bar code scan by control module control recognition module, when bar code information is imported, control module is read in bar code information from the recognition module, and it is carried out pre-service according to the agreement of serial communication; Then, bar code information is sent to host side Data Control program by Ethernet, for data retrieval submits necessary information, wait for again and receive the video data that sends over from host side Data Control program, call explicit function, control display module according to reveal codes and display position and information is outputed to LCDs show.
5. according to the described bar code reader based on Ethernet of claim 1, it is characterized in that: described control module is a core with microprocessor (U5), links to each other with recognition module, mixed-media network modules mixed-media, display module, memory module respectively.
6. according to the described bar code reader of claim 1 based on Ethernet, it is characterized in that: described display module comprises LCDs (LCD), liquid-crystal controller (U6), first～two-section driver (U7～U8), wherein liquid-crystal controller (U6) is exported termination LCDs (LCD), obtain display message by serial line interface from control module, by control with data bus respectively with first～two-section driver (U7～U8) be connected.
7. according to the described bar code reader based on Ethernet of claim 1, it is characterized in that: described mixed-media network modules mixed-media is a core with network controller (U9), links to each other with control module, memory module.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100114136A CN100433036C (en) | 2004-12-30 | 2004-12-30 | Recognition system of Ethernet bar code reader |
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| CNB2004100114136A CN100433036C (en) | 2004-12-30 | 2004-12-30 | Recognition system of Ethernet bar code reader |
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| CN1801168A true CN1801168A (en) | 2006-07-12 |
| CN100433036C CN100433036C (en) | 2008-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153801A (en) * | 2017-05-10 | 2017-09-12 | 翁茂静 | Scanning device, system and method |
| CN109239791A (en) * | 2018-08-03 | 2019-01-18 | 上海奕瑞光电子科技股份有限公司 | A kind of linear array detection device and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444458A (en) * | 1993-02-22 | 1995-08-22 | Casio Computer Co., Ltd. | Display data write control device |
| CN2236671Y (en) * | 1995-08-07 | 1996-10-02 | 陈红 | Pen-like bar code scanner |
| CN1349193A (en) * | 2000-10-13 | 2002-05-15 | 北京金百冠投资顾问有限公司 | Automatic internet addressing bar code import system |
| CN1388479A (en) * | 2001-05-24 | 2003-01-01 | 刘中华 | Bar code system and method of connecting Internet equipment |
| CN1426014A (en) * | 2001-12-10 | 2003-06-25 | 刘国胜 | Bar code Internet dccessing machine |
| CN2507073Y (en) * | 2001-12-10 | 2002-08-21 | 李旭东 | Hand held automatic scanning identifying viewer |
| US8589505B2 (en) * | 2002-11-27 | 2013-11-19 | Texas Instruments Incorporated | Method and apparatus for identifying and retrieving media content |
| US7949953B2 (en) * | 2003-06-13 | 2011-05-24 | Sap Aktiengesellschaft | Designing and generating charts to graphically represent data in a data source |
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2004
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153801A (en) * | 2017-05-10 | 2017-09-12 | 翁茂静 | Scanning device, system and method |
| CN107153801B (en) * | 2017-05-10 | 2023-05-26 | 深圳市恩兴实业有限公司 | Scanning device, system and method |
| CN109239791A (en) * | 2018-08-03 | 2019-01-18 | 上海奕瑞光电子科技股份有限公司 | A kind of linear array detection device and detection method |
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