CN205451079U - Bar code scanning device - Google Patents
Bar code scanning device Download PDFInfo
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- CN205451079U CN205451079U CN201521082360.7U CN201521082360U CN205451079U CN 205451079 U CN205451079 U CN 205451079U CN 201521082360 U CN201521082360 U CN 201521082360U CN 205451079 U CN205451079 U CN 205451079U
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Abstract
The utility model discloses a bar code scanning device, throw the injection die piece including feeling optical module, MCU, buzzer, output module, pilot lamp display module and focal point, feel optical module including following light source, light concentrating sheet, camera lens and the sensor that the light path distributes in proper order, the sensor is connected with MCU, MCU's output is connected with the input of buzzer, output module's input, the input of pilot lamp display module and the input that the injection die piece was thrown to the focal point respectively. The utility model discloses has add pilot lamp display module and focal point and has thrown the injection die piece, can successfully have been read back arbitrary kind throw these three kinds of modes of focal point that the injection die piece throwed through pilot lamp or the focal point of reporting an emergency and asking for help or increased vigilance sound, pilot lamp display module of buzzer in the bar code and remind user's bar code whether successfully to be read, extensive applicability, and greatly reduced the possibility of user's erroneous judgement, more reliable. The utility model discloses but wide application in electronic equipment field.
Description
Technical field
This utility model relates to electronic device field, especially a kind of bar code scanner.
Background technology
The high-tech product that bar code scanner is combined closely as technology such as optics, machinery, electronics, software application, it it is the main computer input apparatus of the third generation after keyboard and mouse, directly the scanning of picture, photo, film, all kinds of drawing figure and document can be inputted to computer, thus realize the process to these image informations, manage, use, store or export.Bar code scanner has been widely used in the occasions such as bank, hospital, supermarket, factory and logistics at present, brings great convenience to the life of people.
Traditional bar code scanner typically points out user bar code to be successfully read by the alarm call (such as the sound of " ticking ") of buzzer, but this mode is not particularly suited for the occasion that environment is noisy.In the occasion that environment is noisy, occasion as noisy in working environment, the alarm call of buzzer is easily flooded by noisy noise (such as voice, machine roar etc.), user is caused cannot accurately to learn that bar code is successfully read the most, the suitability is narrower, and easily cause user erroneous judgement, less reliable.
Therefore, it is necessary to provide a kind of brand-new bar code scanner, so that user remains to accurately learn that bar code is successfully read the most in the occasion that noisy environment is noisy.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is: provide a kind of wide and reliable bar code scanner of the suitability.
Technical solution adopted in the utility model is:
A kind of bar code scanner, including photosensitive module, MCU, buzzer, output module, display lamp display module and focus projection module, described photosensitive module includes successively along light source, concentration piece, camera lens and the sensor of light path distribution, described sensor is connected with MCU, and the outfan of described MCU input with input, the input of output module, the input of display lamp display module and the focus projection module of buzzer respectively is connected.
Further, described MCU is made up of STM32 single-chip microcomputer and peripheral circuit.
Further, also include that clock circuit, described clock circuit are connected with MCU.
Further, also include that power circuit, described power circuit respectively MCU, sensor, buzzer, output module, display lamp display module and focus projection module are powered.
Further, described sensor includes sample circuit, described sample circuit is by the first operational amplifier, second operational amplifier, 5V power supply and peripheral circuit composition, the outfan of described MCU and the negative-phase input of the first operational amplifier connect, the normal phase input end of described first operational amplifier and the normal phase input end of the second operational amplifier are all connected with 5V power supply, the outfan of described first operational amplifier is connected with the negative-phase input of the second operational amplifier and the first modulus signal sampling end of MCU respectively, the outfan of described second operational amplifier is connected with the second modulus signal sampling end of MCU.
Further, described output module is made up of 12 wiring connectors, 5V power supply and peripheral circuit, described 12 wiring connectors include USB serial ports, keyboard mouth, 5V power interface and grounding ports, described peripheral circuit includes USB serial ports output conversion circuit and keyboard mouth output conversion circuit, the outfan of described MCU is connected with USB serial ports by USB serial ports output conversion circuit, and the outfan of described MCU is connected with keyboard mouth by keyboard mouth output conversion circuit.
Further, described buzzer includes the first resistance, second resistance, first PNP transistor, 5V power supply, diode and audio frequency power amplifier, one end of described first resistance and one end of the second resistance are all connected with MCU, the other end of described first resistance and the base stage of the first PNP transistor connect, the other end of described second resistance and 5V power supply all emitter stages with the first PNP transistor are connected, the colelctor electrode of described first PNP transistor is connected with the negative electrode of diode and the first input end of audio frequency power amplifier respectively, the anode of described diode and the second equal ground connection of input of audio frequency power amplifier.
Further, described focus projection module is Fructus Citri tangerinae lamp focus projection module, described Fructus Citri tangerinae lamp focus projection module includes 3V power supply, 3rd resistance and LED lamp unit, described 3V power supply is connected by the 3rd resistance and then LED lamp unit, described LED lamp unit includes biasing resistor, 4th resistance, second PNP transistor, 5V power supply, 5th resistance and the first LED, one end of described biasing resistor and one end of the 4th resistance are all connected with MCU, the other end of described biasing resistor and the base stage of the second PNP transistor connect, the other end of described 4th resistance and 5V power supply all emitter stages with the second PNP transistor are connected, the colelctor electrode of described second PNP transistor is connected by the 5th resistance and then the anode with the first LED, the minus earth of described first LED.
Further, described Fructus Citri tangerinae lamp focus projection module is additionally provided with square shaping hole or heart-shaped shaping hole, and the gold-tinted that described LED lamp unit sends projects in bar code through behind square shaping hole or heart-shaped shaping hole.
Further, described display lamp display module is that HONGGUANG senses indicating module automatically, described HONGGUANG automatically senses indicating module and includes signal transmission circuit and signal receiving circuit, described signal transmission circuit includes 5V power supply, 6th resistance, 7th resistance, 8th resistance, red emission pipe and NPN transistor, described one end of 6th resistance and one end of the 7th resistance are all connected with MCU, the other end of described 6th resistance is connected with the base stage of NPN transistor, the described other end of the 7th resistance and one end of the 8th resistance are all connected with 5V power supply, the other end of described 8th resistance by red emission pipe and then is connected with the colelctor electrode of NPN transistor, the grounded emitter of described NPN transistor；Described signal receiving circuit is made up of 5V power supply, the 3rd operational amplifier, four-operational amplifier, red light receiving tube and peripheral circuit.
The beneficial effects of the utility model are: include photosensitive module, MCU, buzzer, output module, display lamp display module and focus projection module, it is additionally arranged display lamp display module and focus projection module, can be by the alarm call of buzzer after bar code is successfully read, any one in the focus these three mode of the display lamp of display lamp display module or the projection of focus projection module reminds user bar code to be the most successfully read, it is not only suitable for the application scenario of traditional bar code device, it is also applied for the occasion that environment is noisy, the suitability is wide, and greatly reduce the probability of user erroneous judgement, relatively reliable.Further, focus projection module is Fructus Citri tangerinae lamp focus projection module, can reliably distinguish distance by what the Fructus Citri tangerinae lamp focus of projection increased bar code scanner.Further, Fructus Citri tangerinae lamp focus projection module is additionally provided with square shaping hole or heart-shaped shaping hole so that project the Fructus Citri tangerinae lamp focus in bar code be shaped as square or heart-shaped, more diversified.Further, display lamp display module is that HONGGUANG senses indicating module automatically, can be that bar code is stamped and reliably distinguished apart from remote HONGGUANG automatically by signal transmission circuit and signal receiving circuit, relatively reliable.
Accompanying drawing explanation
Fig. 1 is the overall structure block diagram of a kind of bar code scanner of this utility model；
Fig. 2 is the pin figure of this utility model STM32 single-chip microcomputer；
Fig. 3 is the circuit theory diagrams of this utility model clock circuit and power circuit；
Fig. 4 is the circuit theory diagrams of sample circuit in this utility model sensor；
Fig. 5 is the circuit theory diagrams of this utility model output module；
Fig. 6 is the circuit theory diagrams of this utility model buzzer；
Fig. 7 is the circuit theory diagrams of this utility model focus projection module；
Fig. 8 is the circuit theory diagrams of this utility model display lamp display module.
Detailed description of the invention
With reference to Fig. 1, a kind of bar code scanner, including photosensitive module, MCU, buzzer, output module, display lamp display module and focus projection module, described photosensitive module includes successively along light source, concentration piece, camera lens and the sensor of light path distribution, described sensor is connected with MCU, and the outfan of described MCU input with input, the input of output module, the input of display lamp display module and the focus projection module of buzzer respectively is connected.
Wherein, light source, it is used for sending optical signal.
Concentration piece, for converging the optical signal of light source.
Camera lens, for being sent to sensor by the optical signal that light signal and bar code reflect.
Sensor, for gathering optical signal and the optical signal of light source of bar code reflection, and is sent to MCU by the optical signal gathering bar code reflection.
MCU, for carrying out data process according to the optical signal of sensor collection, to trigger corresponding control signal.
Buzzer, the alarm call controlling its output for control signal according to MCU after bar code is successfully read reminds user.
Display lamp display module, controls display lamp for control signal according to MCU after bar code is successfully read and lights and remind user (before bar code is not successfully read, display lamp keeps the state extinguished).
Focus projection module, the focus controlling to project in bar code for control signal according to MCU after bar code is successfully read extinguishes reminds user (before bar code is not successfully read, projecting the state that the focus in bar code is remain on).
Output module, for exporting in the mode such as serial ports, keyboard according to the control signal of MCU.
With reference to Fig. 2, being further used as preferred embodiment, described MCU is made up of STM32 single-chip microcomputer and peripheral circuit.
When actually used, STM32 single-chip microcomputer can use STM32103C8T6 chip to realize.
With reference to Fig. 1 and 3, it is further used as preferred embodiment, also includes that clock circuit, described clock circuit are connected with MCU.
Wherein, clock circuit can 12MHz crystal oscillator Y101 as shown in Figure 3 and peripheral circuit composition, for providing clock signal for MCU.
With reference to Fig. 3, it is further used as preferred embodiment, also includes that power circuit, described power circuit respectively MCU, sensor, buzzer, output module, display lamp display module and focus projection module are powered.
Wherein, power supply of the present utility model includes that the 3V power supply of Fig. 3,5V power supply, 5V power supply, power supply OP_VCC5,3V power supply after resistance R136 blood pressure lowering, the power supply VCCD after resistance R135 blood pressure lowering and power supply VCCD, respectively through the power supply after resistance R116, R117 and R118 blood pressure lowering, can choose according to being actually needed of modules in use flexibly.
nullWith reference to Fig. 4，It is further used as preferred embodiment，Described sensor includes sample circuit，Described sample circuit is by the first operational amplifier U101A、Second operational amplifier U101B、5V power supply and peripheral circuit composition，The outfan of described MCU and the negative-phase input of the first operational amplifier U101A connect，The normal phase input end of described first operational amplifier U101A and the normal phase input end of the second operational amplifier U101B are all connected with 5V power supply，The outfan of described first operational amplifier U101A is connected with the negative-phase input of the second operational amplifier U101B and the first modulus signal sampling end CCD_ADN_Near of MCU respectively，The outfan of described second operational amplifier is connected with the second modulus signal sampling end CCD_ADN_Far of MCU.
Wherein, the signal CCD_ADN_Source of MCU also needs to first pass through R142 blood pressure lowering is the first operational amplifier U101A that CCD_OS signal is just admitted to sample circuit.This utility model have employed two operational amplifiers (U101A and U101B) and two modulus signal sampling ends (CCD_ADN_Near and CCD_ADN_Far), can guarantee that the optical signal that bar code reflects is collected.
With reference to Fig. 5, it is further used as preferred embodiment, described output module is made up of 12 wiring connector CON12,5V power supplys and peripheral circuit, described 12 wiring connector CON12 include USB serial ports USB_DP, keyboard mouth nTrigger, 5V power interface and grounding ports, described peripheral circuit includes USB serial ports output conversion circuit and keyboard mouth output conversion circuit, the outfan of described MCU is connected with USB serial ports USB_DP by USB serial ports output conversion circuit, and the outfan of described MCU is connected with keyboard mouth nTrigger by keyboard mouth output conversion circuit.
Wherein, USB serial ports output conversion circuit uses two PNP transistor Q103 and Q107 and peripheral circuit to realize, and keyboard mouth output conversion circuit uses 1 PNP transistor Q104 and peripheral circuit to realize.
nullWith reference to Fig. 6，It is further used as preferred embodiment，Described buzzer includes the first resistance R105、Second resistance R107、First PNP transistor Q102、5V power supply、Diode D203 and audio frequency power amplifier BZ1，One end of described first resistance R105 and one end of the second resistance R107 are all connected with MCU，The other end of described first resistance R105 and the base stage of the first PNP transistor Q102 connect，The other end of described second resistance R107 and 5V power supply all emitter stages with the first PNP transistor Q102 are connected，The colelctor electrode of described first PNP transistor Q102 is connected with the negative electrode of diode D203 and the first input end of audio frequency power amplifier BZ1 respectively，The anode of described diode D203 and the second equal ground connection of input of audio frequency power amplifier BZ1.
Wherein, Buzzer_ON is the pin of MCU, and BEEP-O is the pin of 12 line electric wire connecting junctions.Buzzer of the present utility model, as existing scanning means, can send alarm call (such as the sound of " ticking "), to point out user bar code to be successfully read according to the audio frequency power amplifier BZ1 of the control signal control buzzer of MCU.
nullWith reference to Fig. 7，It is further used as preferred embodiment，Described focus projection module is Fructus Citri tangerinae lamp focus projection module，Described Fructus Citri tangerinae lamp focus projection module includes 3V power supply、3rd resistance R131 and LED lamp unit，Described 3V power supply is connected by the 3rd resistance R131 and then LED lamp unit，Described LED lamp unit includes biasing resistor R124、4th resistance R111、Second PNP transistor Q105、5V power supply、5th resistance R109 and the first LED D101，One end of described biasing resistor R124 and one end of the 4th resistance R111 are all connected with MCU，The other end of described biasing resistor R124 and the base stage of the second PNP transistor Q105 connect，The other end of described 4th resistance R111 and 5V power supply all emitter stages with the second PNP transistor Q105 are connected，The colelctor electrode of described second PNP transistor Q105 is connected by the 5th resistance R109 and then the anode with the first LED D101，The minus earth of described first LED D101.
Wherein, Fructus Citri tangerinae lamp focus projection module can also be adjusted flexibly LED lamp unit and the structure of LED and composition according to actual needs.Such as, LED can choose 2, and correspondingly, the outfan of colelctor electrode increases by 1 resistance R127；LED lamp unit can choose 2, correspondingly, increases by 1 resistance R132, and the output port of Fructus Citri tangerinae lamp focus projection module also increases to 2 (GDLED and PWRLED), as shown in Figure 7.
Existing scanning device HONGGUANG, when distance is somewhat remote, can cause HONGGUANG light to obscure because of external environment, make user be difficult in use discover and sentence distinguish.For this, this utility model adds a Fructus Citri tangerinae lamp focus projection module in a device, light is strengthened by the Fructus Citri tangerinae lamp focus of Fructus Citri tangerinae lamp focus projection module projection, make that light is the brightest is clearly directed at bar code, make user the most more convenient, the probability decreasing erroneous judgement and the loss brought thereof.When bar code scanner of the present utility model is when reading bar code, it may appear that HONGGUANG and add a Fructus Citri tangerinae lamp focus, when bar code scanner successfully reads bar code, this Fructus Citri tangerinae lamp focus can flash and extinguish.This utility model passes through this technology so that user in use, can more accurately learn the information whether bar code is successfully read.
Being further used as preferred embodiment, described Fructus Citri tangerinae lamp focus projection module is additionally provided with square shaping hole or heart-shaped shaping hole, and the gold-tinted that described LED lamp unit sends projects in bar code through behind square shaping hole or heart-shaped shaping hole.
Wherein, Fructus Citri tangerinae lamp focus projection module is additionally provided with square shaping hole or heart-shaped shaping hole so that project the Fructus Citri tangerinae lamp focus in bar code be shaped as square or heart-shaped, more diversified.
nullWith reference to Fig. 8，It is further used as preferred embodiment，Described display lamp display module is that HONGGUANG senses indicating module automatically，Described HONGGUANG automatically senses indicating module and includes signal transmission circuit and signal receiving circuit，Described signal transmission circuit includes 5V power supply、6th resistance R320、7th resistance R321、8th resistance R322、Red emission pipe D320 and NPN transistor Q320，Described one end of 6th resistance R320 and one end of the 7th resistance R321 are all connected with MCU，The described other end of the 6th resistance R320 is connected with the base stage of NPN transistor Q320，The described other end of the 7th resistance R321 and one end of the 8th resistance R322 are all connected with 5V power supply，The other end of described 8th resistance R322 is connected by red emission pipe D320 and then the colelctor electrode with NPN transistor Q320，The grounded emitter of described NPN transistor Q320；Described signal receiving circuit is made up of 5V power supply, the 3rd operational amplifier U301B, four-operational amplifier U301B, red light receiving tube D302 and peripheral circuit.
Wherein, HONGGUANG automatically senses indicating module and can realize automatically stamping for article by signal transmission circuit and signal receiving circuit the function of HONGGUANG when sensor detects the optical signal of article bar code.
Although MCU of the present utility model relates to the content that data process, but it can use existing technological means to realize, and is not repeated at this to describe.
It is above preferable enforcement of the present utility model is illustrated, but this utility model is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement on the premise of this utility model spirit, and deformation or the replacement of these equivalents are all contained in the application claim limited range.
Claims (10)
1. a bar code scanner, it is characterized in that: include photosensitive module, MCU, buzzer, output module, display lamp display module and focus projection module, described photosensitive module includes successively along light source, concentration piece, camera lens and the sensor of light path distribution, described sensor is connected with MCU, and the outfan of described MCU input with input, the input of output module, the input of display lamp display module and the focus projection module of buzzer respectively is connected.
A kind of bar code scanner the most according to claim 1, it is characterised in that: described MCU is made up of STM32 single-chip microcomputer and peripheral circuit.
A kind of bar code scanner the most according to claim 1, it is characterised in that: also include that clock circuit, described clock circuit are connected with MCU.
A kind of bar code scanner the most according to claim 2, it is characterised in that: also include that power circuit, described power circuit respectively MCU, sensor, buzzer, output module, display lamp display module and focus projection module are powered.
A kind of bar code scanner the most according to claim 2, it is characterized in that: described sensor includes sample circuit, described sample circuit is by the first operational amplifier, second operational amplifier, 5V power supply and peripheral circuit composition, the outfan of described MCU and the negative-phase input of the first operational amplifier connect, the normal phase input end of described first operational amplifier and the normal phase input end of the second operational amplifier are all connected with 5V power supply, the outfan of described first operational amplifier is connected with the negative-phase input of the second operational amplifier and the first modulus signal sampling end of MCU respectively, the outfan of described second operational amplifier is connected with the second modulus signal sampling end of MCU.
A kind of bar code scanner the most according to claim 2, it is characterized in that: described output module is made up of 12 wiring connectors, 5V power supply and peripheral circuit, described 12 wiring connectors include USB serial ports, keyboard mouth, 5V power interface and grounding ports, described peripheral circuit includes USB serial ports output conversion circuit and keyboard mouth output conversion circuit, the outfan of described MCU is connected with USB serial ports by USB serial ports output conversion circuit, and the outfan of described MCU is connected with keyboard mouth by keyboard mouth output conversion circuit.
A kind of bar code scanner the most according to claim 2, it is characterized in that: described buzzer includes the first resistance, second resistance, first PNP transistor, 5V power supply, diode and audio frequency power amplifier, one end of described first resistance and one end of the second resistance are all connected with MCU, the other end of described first resistance and the base stage of the first PNP transistor connect, the other end of described second resistance and 5V power supply all emitter stages with the first PNP transistor are connected, the colelctor electrode of described first PNP transistor is connected with the negative electrode of diode and the first input end of audio frequency power amplifier respectively, the anode of described diode and the second equal ground connection of input of audio frequency power amplifier.
nullA kind of bar code scanner the most according to claim 2，It is characterized in that: described focus projection module is Fructus Citri tangerinae lamp focus projection module，Described Fructus Citri tangerinae lamp focus projection module includes 3V power supply、3rd resistance and LED lamp unit，Described 3V power supply is connected by the 3rd resistance and then LED lamp unit，Described LED lamp unit includes biasing resistor、4th resistance、Second PNP transistor、5V power supply、5th resistance and the first LED，One end of described biasing resistor and one end of the 4th resistance are all connected with MCU，The other end of described biasing resistor and the base stage of the second PNP transistor connect，The other end of described 4th resistance and 5V power supply all emitter stages with the second PNP transistor are connected，The colelctor electrode of described second PNP transistor is connected by the 5th resistance and then the anode with the first LED，The minus earth of described first LED.
A kind of bar code scanner the most according to claim 8, it is characterized in that: described Fructus Citri tangerinae lamp focus projection module is additionally provided with square shaping hole or heart-shaped shaping hole, the gold-tinted that described LED lamp unit sends projects in bar code through behind square shaping hole or heart-shaped shaping hole.
10. according to a kind of bar code scanner described in any one of claim 2-9, it is characterized in that: described display lamp display module is that HONGGUANG senses indicating module automatically, described HONGGUANG automatically senses indicating module and includes signal transmission circuit and signal receiving circuit, described signal transmission circuit includes 5V power supply, 6th resistance, 7th resistance, 8th resistance, red emission pipe and NPN transistor, described one end of 6th resistance and one end of the 7th resistance are all connected with MCU, the other end of described 6th resistance is connected with the base stage of NPN transistor, the described other end of the 7th resistance and one end of the 8th resistance are all connected with 5V power supply, the other end of described 8th resistance by red emission pipe and then is connected with the colelctor electrode of NPN transistor, the grounded emitter of described NPN transistor；Described signal receiving circuit is made up of 5V power supply, the 3rd operational amplifier, four-operational amplifier, red light receiving tube and peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082360.7U CN205451079U (en) | 2015-12-21 | 2015-12-21 | Bar code scanning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082360.7U CN205451079U (en) | 2015-12-21 | 2015-12-21 | Bar code scanning device |
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| CN205451079U true CN205451079U (en) | 2016-08-10 |
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| CN201521082360.7U Active CN205451079U (en) | 2015-12-21 | 2015-12-21 | Bar code scanning device |
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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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2015
- 2015-12-21 CN CN201521082360.7U patent/CN205451079U/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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