CN2762229Y - Bar code scanning terminal - Google Patents
Bar code scanning terminal Download PDFInfo
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- CN2762229Y CN2762229Y CNU2004200129334U CN200420012933U CN2762229Y CN 2762229 Y CN2762229 Y CN 2762229Y CN U2004200129334 U CNU2004200129334 U CN U2004200129334U CN 200420012933 U CN200420012933 U CN 200420012933U CN 2762229 Y CN2762229 Y CN 2762229Y
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Abstract
The utility model relates to an automatic control field, a bar code scanning terminal specifically says so, it is based on the ethernet technique, by power module power supply, by the recognition module, control module, the network module, display module, storage module constitute, the signal of recognition module's input for scanning and recognizing bar code information, output is through control module access network module, with data control procedure communication, storage module is connected with control module, network module respectively, display module's input connects to control module. The utility model discloses a from data acquisition to data control, to showing whole functions of output again to have low cost, characteristics such as transmission rate height, convenient to use.
Description
Technical field
The utility model relates to automation field, is a kind of bar code scan terminal 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.
The utility model content
Traditional barcode scanner transfer rate is low, cost is high in order to overcome, networking and use defective such as inconvenience, and the purpose of this utility model provides a kind of bar code scan terminal based on Ethernet.It has gathered embedded computing technique, ethernet technology and POE technology, makes bar code scan terminal possess control function such as data processing, transmission, and transfer rate height, cost are low, and networking and use convenient.
To achieve these goals, the technical solution of the utility model is as follows: based on ethernet technology, power 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;
Described supply module comprises demand power-supply controller, dc voltage changer and transformer, wherein: the input of demand power-supply controller 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 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 utility model 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;
The utility model is the bar code scan terminal that is used for finishing Item Information collection, storage, control.Core technology---embedded computing technique, ethernet technology and POE technology based on Ethernet have more 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 makes easily access network of bar code scan terminal.
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 control program makes the control of complex information be achieved.
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 utility model 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.
Description of drawings
Fig. 1 is the hardware block diagram of the utility model bar code scan terminal.
Fig. 2 is the circuit theory diagrams of supply module in the utility model bar code scan terminal.
Fig. 3 is the circuit theory diagrams of memory module in the utility model bar code scan terminal.
Fig. 4 is the circuit theory diagrams of control module in the utility model bar code scan terminal.
Fig. 5 is the circuit theory diagrams of display module in the utility model bar code scan terminal.
Fig. 6 is the circuit theory diagrams of mixed-media network modules mixed-media in the utility model bar code scan terminal.
Fig. 7 is the hierarchy chart of the hardware elementary diagram of the utility model bar code scan terminal.
Fig. 8 is the utility model control program process flow diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the utility model bar code scan terminal is based on ethernet technology; Power 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 is by scanning and distinguish bar code information, through signal shaping and decoding and after control module is handled, can send to computer terminal through Ethernet by mixed-media network modules mixed-media, then wait for the data that computer terminal sends over, by the demonstration output of control module.
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, main scanning, the pre-service of being responsible for bar code information, send data to Ethernet, 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 by Ethernet, wait for to receive the video data that sends over from host side again, call explicit function, control display module according to reveal codes and display position and information is outputed to LCDs LCD 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 first～two-section driver U7～U8 respectively 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 (6)
1. bar code scan terminal, it is characterized in that: based on ethernet technology, power 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.
2. according to the described bar code scan terminal of claim 1, 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) 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 scan terminal 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.
5. according to the described bar code scan terminal of claim 1, 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.
6. according to the described bar code scan terminal 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200129334U CN2762229Y (en) | 2004-12-30 | 2004-12-30 | Bar code scanning terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200129334U CN2762229Y (en) | 2004-12-30 | 2004-12-30 | Bar code scanning terminal |
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| CN2762229Y true CN2762229Y (en) | 2006-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2004200129334U Expired - Fee Related CN2762229Y (en) | 2004-12-30 | 2004-12-30 | Bar code scanning terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463747A (en) * | 2010-10-29 | 2012-05-23 | 北大方正集团有限公司 | Variable-data bar code printing method and variable-data bar code printing system |
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2004
- 2004-12-30 CN CNU2004200129334U patent/CN2762229Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463747A (en) * | 2010-10-29 | 2012-05-23 | 北大方正集团有限公司 | Variable-data bar code printing method and variable-data bar code printing system |
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| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |