CN209000057U - Scanner control circuit - Google Patents
Scanner control circuit Download PDFInfo
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- CN209000057U CN209000057U CN201821588780.6U CN201821588780U CN209000057U CN 209000057 U CN209000057 U CN 209000057U CN 201821588780 U CN201821588780 U CN 201821588780U CN 209000057 U CN209000057 U CN 209000057U
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- light source
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Abstract
The utility model proposes a kind of scanner control circuits, including light source, scanning lens, scanning module, A/D converter circuit and MCU controller, which is characterized in that the scanning module includes ccd image sensor and light source controller；Bar code Macro Lens is fixedly installed immediately ahead of the scanning lens, the bar code Macro Lens is placed outside on scanner, and the light source connects light source controller；The light source controller is connect with MCU controller；The ccd image sensor connects A/D converter circuit, and the A/D converter circuit and light source controller are connect with MCU controller respectively；Two kinds of telecommunication circuits of GPRS telecommunication circuit and OTG conversion circuit are provided in MCU controller, it can choose any one communication mode, circuit is simple, facilitate conversion, in the case where realizing no host, the data transmission for completing equipment room carries out data exchange applied to the connection between various different mobile devices.
Description
Technical field
The utility model relates to scanner technical field, in particular to a kind of scanner control circuit.
Background technique
Bar code has been used by logistic information systems as a kind of data input means in time, accurate, reliable, economic.
In the national popularization and application of industry prosperity, it has also become the exclusive world of commodity general " identity card ".With the stream of bar code
Logical and POS machine use, scanner play important role in bar code identification, bar code identification apply logistics, supermarket,
When restaurant etc. consumes place, due to that would generally identify commodity bar code and branch in mobile payment and merchandise news can identify now
The two dimensional code paid；It needs to be directed at bar code when barcode scanning, the buzzer of confirmation is issued after barcode scanning gun identification, scanner can just move
It opens, otherwise may cause too early movement, or is too far apart from bar code, cause the bar code of identification unclear, influence the bar code of identification
Information is unclear.When barcode scanning gun is adapted in other field, especially warehouse item is cleared up, and is needed using barcode scanning gun to identification
Item Information is identified, and generates list of articles in time, but existing barcode scanning gun connects PC machine, PC using USB data line
Machine just can be carried out printing in connection printer, can not accomplish the timely data transmission of equipment room.
When needing under specific circumstances using scanner, need to verify the identity of user of service, under normal circumstances for
The verifying of user of service's identity generally uses radio-frequency card, but radio-frequency card has circulation, no matter who is found, and can use,
Therefore it can not fundamentally prevent irrelevant personnel using radio-frequency card and falsely use the behavior that scanner carries out faulty operation, it is therefore desirable to
Specially setting can identify the circuit structure of the identification of user of service's biological characteristic on scanner.
Utility model content
The purpose of this utility model aims to solve at least one of the technological deficiency.
To achieve the goals above, the embodiment of the utility model one side provides a kind of scanner control circuit, including
Light source, scanning lens, scanning module, A/D converter circuit and MCU controller, the scanning module include ccd image sensor and
Light source controller；Bar code Macro Lens is fixedly installed immediately ahead of the scanning lens, the bar code Macro Lens is placed outside on scanner,
The light source connects light source controller；The light source controller is connect with MCU controller；The ccd image sensor connects AD
Conversion circuit, the A/D converter circuit and light source controller are connect with MCU controller respectively；
MCU controller includes DSP main control chip, fpga logic control chip and telecommunication circuit；The fpga logic control
The output end of the input pin connection A/D converter circuit of chip；The output pin of the fpga logic control chip connects DSP master
Control the input pin of chip；The output pin of the DSP main control chip connects light source controller, the number of the DSP main control chip
According to communication pin connection communication circuit.
Preferably, the telecommunication circuit uses GPRS communication chip；The communication input pin of the GPRS communication chip connects
Connect the data communicaion pins of DSP main control chip；The communication output pin of the GPRS communication chip is connected by connection GPRS antenna
Connect PC machine.
In any of the above-described scheme preferably, the telecommunication circuit uses OTG conversion circuit；The OTG conversion circuit
Including 2 line I2C serial line interfaces, linear voltage regulator, USB-OTG transceiver and USB controller；The USB-OTG transceiver and USB
Controller connection；The USB controller is connect with the data communicaion pins of DSP main control chip；The 2 line I2C serial line interface connects
The input terminal of linear voltage regulator is connect, the output end of the linear voltage regulator connects USB-OTG transceiver.
In any of the above-described scheme preferably, the surrounding of the bar code Macro Lens is by double-sided adhesive 4 patches of fitting, and 4
A patch is fixed on the outside of the scanning lens of scanner using AB glue.
In any of the above-described scheme preferably, the DSP main control chip uses the dsp chip of model TMS320C32.
In any of the above-described scheme preferably, the fpga chip of the fpga logic control chip EP3C40F484C8.
In any of the above-described scheme preferably, the model MAX3301EAD of the USB-OTG transceiver.
In any of the above-described scheme preferably, the MCU controller is also connected with fingerprint recognition circuit, the fingerprint recognition
Circuit uses the fingerprint recognition chip of model AS602.
According to a kind of scanner control circuit provided by the embodiment of the utility model, compared to existing scanner, at least
Have the advantages that:
1, it by the way that bar code Macro Lens is arranged outside scanning lens, realizes that the bar code scanned to needs amplifies, utilizes
Bar code Macro Lens and scanning lens cooperate, and amplify to the bar code with scanning, amplified image barcode is passed by ccd image again
Sensor acquisition is conducive to barcode scanning gun and obtains clearly bar code image；It the time for shortening barcode scanning gun identification bar code image, improves
Working efficiency.
2, two kinds of telecommunication circuits of GPRS telecommunication circuit and OTG conversion circuit are provided in MCU controller, scanner will connect
When the bar code information received is sent to printer or other equipment machine, any one communication mode can choose, circuit is simple,
Facilitate conversion, printer or cell phone apparatus can be directly connected to using USB-OTG circuit, in the case where realizing no host,
The data transmission for completing equipment room carries out data exchange applied to the connection between various different mobile devices.
3, fingerprint recognition circuit is set in scanner, asks the carry out permission rule of user to scanning using fingerprint recognition
Model avoids irrelevant personnel from disorderly operating.
The additional aspect of the utility model and advantage will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is scanner and bar code microspur involved in a kind of scanner control circuit provided by the embodiment of the utility model
The structural schematic diagram of mirror；
Fig. 2 is a kind of connection block diagram of scanner control circuit provided by the embodiment of the utility model；
Fig. 3 is a kind of circuit diagram of the MCU controller of scanner control circuit provided by the embodiment of the utility model；
Fig. 4 is a kind of circuit theory of the OTG conversion circuit of scanner control circuit provided by the embodiment of the utility model
Figure；
In figure:
1, bar code Macro Lens；2, light source；3, scanning lens；4, ccd image sensor；5, light source controller；6, AD conversion
Circuit；7, MCU controller；
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
As shown in Figs. 1-2, a kind of scanner control circuit of the utility model embodiment, including light source 2, scanning lens 3,
Scanning module, A/D converter circuit 6 and MCU controller 7, the scanning module include that ccd image sensor 4 and light source 2 control
Device；Bar code Macro Lens 1 is fixedly installed immediately ahead of the scanning lens 3, the bar code Macro Lens 1 is placed outside on scanner, described
Light source 2 connects light source controller 5；The light source controller 5 is connect with MCU controller 7；The ccd image sensor 4 connects AD
Conversion circuit 6, the A/D converter circuit 6 and 2 controller of light source are connect with MCU controller 7 respectively；Further, the bar code is micro-
Surrounding away from mirror 1 is bonded 4 patches by double-sided adhesive, and 4 patches are fixed on the scanning lens 3 of scanner using AB glue
Outside.
Light source 2 is connect with light source controller 5, and the output end of MCU controller 7 connects light source controller 5, light source controller 5
Control light source 2 is turned on or off, and light source 2 is used to be 3 light filling of scanning lens.
In the present embodiment, the bar code Macro Lens 1 is placed outside on scanner, and face scanning lens 3, to scanning
Bar code be acquired, by the way that bar code Macro Lens 1 is arranged outside scanning lens 3, realizes and the bar code that scans of needs put
Greatly, cooperated using bar code Macro Lens 1 and scanning lens 3, secondary amplification, amplified image barcode are carried out to the bar code with scanning
It is acquired again by ccd image sensor 4, ccd image sensor 4 uses the image collection chip of model TCD1706DG；Bar code figure
As shining directly into ccd image sensor 4, ccd image sensor 4 directly converts the optical signal received through scanning lens 3
For the electric signal of bar code, and by the electric signal after conversion, it is sent to A/D converter circuit 6 and carries out analog-to-digital conversion, the number after conversion
Signal is sent to MCU controller 7 and carries out image procossing.
As shown in Figure 3, wherein MCU controller includes DSP main control chip, fpga logic control chip and telecommunication circuit；Institute
State the dsp chip that DSP main control chip uses model TMS320C32.The fpga logic control chip EP3C40F484C8's
Fpga chip.The output end of the input pin connection A/D converter circuit of the fpga logic control chip；A/D converter circuit carries out
Analog-to-digital conversion, the digital signal after conversion are sent to fpga logic control chip, the efferent duct of the FPGA logic control chip
The input pin of foot connection DSP main control chip；Digital signal is sent to dsp chip, is filtered, rectifies；The DSP master control
The data communicaion pins connection communication circuit of chip.Bar code information is sent to other equipment by telecommunication circuit.The DSP master
The output pin for controlling chip connects light source controller, and for controlling light source, wherein light source controller can be mended using optocoupler connection
LED of light etc. is realized.
In one embodiment of the utility model, the telecommunication circuit uses GPRS communication chip；The GPRS communication
The data communicaion pins of the communication input pin connection DSP main control chip of chip；The communication efferent duct of the GPRS communication chip
Foot connects PC machine by connection GPRS antenna.Wherein GPRS communication chip can use the GPRS chip of model SIM800C.It is real
The wireless communication of existing scanner and host computer.
As shown in figure 4, the telecommunication circuit uses OTG conversion circuit；The OTG conversion circuit includes 2 line I2C serial interfaces
Mouth J6, linear voltage regulator OU1, USB-OTG transceiver and USB controller；The USB-OTG transceiver is connect with USB controller；
The USB controller is connect with the data communicaion pins of DSP main control chip；The 2 line I2C serial line interface connects linear voltage regulator
Input terminal, the output end of the linear voltage regulator connects USB-OTG transceiver.Wherein, the type of the USB-OTG transceiver
Number be MAX3301EAD.The model MES3350AP of USB controller.USB controller control USB controller sends and receivees number
According to, realize scanner and other equipment direct communication, without setting PC machine carry out data relay, such as scanner directly with
Android mobile phone connection, directly can check scan data using mobile phone.2 line I2C serial line interface J6 of scanner benefit directly with have
The printer of USB interface connects, can direct print scanned data.
2 line I2C serial line interface J6 connection linear voltage regulator OU1 need all the way for the external equipment that I2C bus provides power supply
3.3V pressure stabilizing exports supply voltage, to provide power supply with the 1500 Ω resistance for being connected to D+, D- pin for logic circuit.Pass through
Pull-up resistor on D+, D- pin can issue the signal that scanner equipment has connected, and the work of indicating equipment to the equipment of connection
Make speed.Resistance, which is pulled to D+, indicates full speed running, and resistance, which is pulled to D-, indicates low speed operation.Other endpoints (including D+ and D-
15k Ω pull down resistor) for detecting the state of pull-up resistor.Since USB design needs to provide warm connection function.Therefore,
Esd protection circuit is mainly used for providing protection for D+, D- and VBUS pin.
Hold irrelevant personnel in order to prevent arbitrarily to cause any property loss using scanner, the MCU controller is also connected with finger
Line identification circuit, the fingerprint recognition circuit use the fingerprint recognition chip of model AS602.It should be noted that the present embodiment
In various chips citing, be not limited to the example above, can also be other modes, details are not described herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (8)
1. a kind of scanner control circuit, including light source, scanning lens, scanning module, A/D converter circuit and MCU controller,
It is characterized in that, the scanning module includes ccd image sensor and light source controller；Fixed setting immediately ahead of the scanning lens
Bar code Macro Lens, the bar code Macro Lens are placed outside on scanner, and the light source connects light source controller；The light source controller
It is connect with MCU controller；The ccd image sensor connects A/D converter circuit, the A/D converter circuit and light source controller point
It is not connect with MCU controller；
MCU controller includes DSP main control chip, fpga logic control chip and telecommunication circuit；The fpga logic controls chip
Input pin connection A/D converter circuit output end；The output pin of the fpga logic control chip connects DSP master control core
The input pin of piece；The output pin of the DSP main control chip connects light source controller, and the data of the DSP main control chip are logical
Fuse tube foot connection communication circuit.
2. scanner control circuit according to claim 1, which is characterized in that the telecommunication circuit communicates core using GPRS
Piece；The data communicaion pins of the communication input pin connection DSP main control chip of the GPRS communication chip；The GPRS communicates core
The communication output pin of piece connects PC machine by connection GPRS antenna.
3. scanner control circuit according to claim 1, which is characterized in that the telecommunication circuit is using OTG conversion electricity
Road；The OTG conversion circuit includes 2 line I2C serial line interfaces, linear voltage regulator, USB-OTG transceiver and USB controller；It is described
USB-OTG transceiver is connect with USB controller；The USB controller is connect with the data communicaion pins of DSP main control chip；Institute
State the input terminal of 2 line I2C serial line interfaces connection linear voltage regulator, the output end connection USB-OTG transmitting-receiving of the linear voltage regulator
Device.
4. scanner control circuit according to claim 1, which is characterized in that the surrounding of the bar code Macro Lens passes through double
4 patches of face glue laminating, 4 patches are fixed on the outside of the scanning lens of scanner using AB glue.
5. scanner control circuit according to claim 1, which is characterized in that the DSP main control chip uses model
The dsp chip of TMS320C32.
6. scanner control circuit according to claim 1, which is characterized in that the fpga logic controls chip
The fpga chip of EP3C40F484C8.
7. scanner control circuit according to claim 3, which is characterized in that the model of the USB-OTG transceiver
MAX3301EAD。
8. scanner control circuit according to claim 1, which is characterized in that the MCU controller is also connected with fingerprint knowledge
Other circuit, the fingerprint recognition circuit use the fingerprint recognition chip of model AS602.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821588780.6U CN209000057U (en) | 2018-09-28 | 2018-09-28 | Scanner control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821588780.6U CN209000057U (en) | 2018-09-28 | 2018-09-28 | Scanner control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN209000057U true CN209000057U (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821588780.6U Active CN209000057U (en) | 2018-09-28 | 2018-09-28 | Scanner control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244637A (en) * | 2019-06-27 | 2019-09-17 | 深圳市华文创新科技有限公司 | The new type control circuit of bar code scanner |
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2018
- 2018-09-28 CN CN201821588780.6U patent/CN209000057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244637A (en) * | 2019-06-27 | 2019-09-17 | 深圳市华文创新科技有限公司 | The new type control circuit of bar code scanner |
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