CN205091789U - Mobile payment device - Google Patents
Mobile payment device Download PDFInfo
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- CN205091789U CN205091789U CN201520867172.9U CN201520867172U CN205091789U CN 205091789 U CN205091789 U CN 205091789U CN 201520867172 U CN201520867172 U CN 201520867172U CN 205091789 U CN205091789 U CN 205091789U
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- nmos tube
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Abstract
The embodiment of the utility model discloses mobile payment device, include: main control chip for use the account information data to be the input, the output of IO mouth uses the square wave to be loaded with the FSK signal of two track numbers according to information as the basic carrier after FSK modulates, first time delay snubber circuit for receive a FSK signal of main control chip output port output, and export the first input end of a drive signal to the two -way drive circuit of MOS pipe, second time delay snubber circuit for receive the 2nd FSK signal of the 2nd output port of main control chip output, export the second input of the 2nd drive signal to the two -way drive circuit of MOS pipe, MOS manages two -way drive circuit for drive transmitting coil, the parallelly connected transmitting coil of two outputs with and connect electric capacity, transmitting coil for load the magnetism pulse signal of two track numbers according to information to POS terminal transmission. The utility model discloses it catches and discerns transmitting coil's pulsed magnetic field more to do benefit to POS terminal magnetic head.
Description
Technical field
The utility model belongs to mobile payment field, is specifically related to a kind of mobile payment device.
Background technology
In daily life, user often uses the mobile applications that mobile terminal is installed to complete certain behavior or to reach certain effect, such as, use mobile payment program to perform payment, i.e. so-called mobile payment.
Application publication number is CN104867008A, publication date is that the Chinese patent application 201510289398.X on August 26th, 2015 discloses method of mobile payment and system under a kind of line, pays and realize paying identical result with swiping the card under can be used for realizing carrying out contactless line in POS terminal.Wherein under line, mobile-payment system comprises a coding unit, for the source data comprising bank card magnetic strip information for input, generate the pulse new model matched with described source data; Waveform modulated unit, for described pulse signal for input, generate the modulation signal matched with described pulse signal; Smart mobile phone, for performing the data processing function of coding unit and waveform modulated unit and exporting described modulation signal; Magnetic-pulse transmitter, for receiving described modulation signal from described smart mobile phone, and converts described modulation signal to magnetic-pulse signal; POS terminal, for passing through its magnetic head from magnetic-pulse signal described in described magnetic-pulse transmitter receipt, converting the magnetic strip information of bank card to, and paying by described magnetic-pulse signal.Wherein in an application example, magnetic-pulse transmitter comprises audio connector, magnetic-pulse transmitting terminal and package casing.Magnetic-pulse transmitting terminal is encapsulated in encapsulating shell inside, and magnetic-pulse transmitting terminal comprises magnet and is wrapped in the transmitting coil on magnet.The signal at transmitting coil two ends is the modulation signal being loaded with the information such as two track data after ovennodulation of the audio port output of smart mobile phone, this modulation signal can be directly used in driving transmitting coil, and the intensity forming magnetic field around final transmitting coil depends on the speed of size of current and this Current versus time change flowing through transmitting coil.
Above-mentioned application publication number is in the embodiment disclosed in the patent of CN104867008A, what adopt is by the mode of the audio port Direct driver transmitting coil of smart mobile phone, in this mode, although smart mobile phone has enough driving forces to transmitting coil, but need smart mobile phone be used to complete payment behavior when implementing mobile payment, if user does not carry with smart mobile phone or smart mobile phone electricity deficiency, can not implement, thus limit use scenes and the scope of mobile payment.
In another mobile payment scene, if use main control chip (micro-control unit) to substitute smart mobile phone, the I/O port of direct use main control chip drives transmitting coil, then there is following drawback: one, flow through the restriction of maximum current by the maximum drive ability of the I/O port of main control chip of transmitting coil, the magnetic field intensity that transmitting coil is excited is limited to the maximum drive current of I/O port, thus the Limit of J-validity reduction causing the magnetic head of POS terminal to be responded to and receive, be unfavorable for playing system performance efficiently.They are two years old, when the limit of driving force close to the I/O port of main control chip, present stronger inductive load characteristic, the level at transmitting coil two ends is when switching fast, strong spike electric signal can be formed in load, the magnetic field that carrier voltage signal after modulation is formed after driving transmitting coil in space presents sharp-pointed rising and dropping characteristic, see Fig. 1, be depicted as the voltage at transmitting coil two ends and launch the waveform schematic diagram of magnetic-pulse, wherein Vcoil_1 is the voltage oscillogram of transmitting coil one end, Vcoil_2 is the voltage oscillogram of the transmitting coil other end, Icoil is the magnetic-pulse signal waveform schematic diagram of transmitting coil, the spiking characteristics of voltage and magnetic-pulse waveform is unfavorable for the seizure of POS terminal magnetic head to magnetic-pulse signal, have impact on receiving sensitivity.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of mobile payment device, the time of signal rising has been widened by arranging time delay buffer circuit, restrained effectively at transmitting coil two ends due to the surge voltage that the transition in drive level direction causes, driving force is effectively enhanced by metal-oxide-semiconductor drive circuit in bi-directional, in the transmitting coil carrying out good impedance match, maximum power transfer can be realized, the magnetic field intensity that transmitting coil is excited can effectively be promoted, and effectively improves the service efficiency of power supply.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of mobile payment device, comprising:
Main control chip, for taking account information data as input, I/O port exports with square wave the fsk signal of the two track data information that are loaded with after FSK modulation being main carrier;
First time delay buffer circuit, for receiving the first fsk signal that main control chip first output port exports, and exports the first input end of the first drive singal to metal-oxide-semiconductor drive circuit in bi-directional;
Second time delay buffer circuit, for receiving the second fsk signal that main control chip second output port exports, and exports second input end of the second drive singal to metal-oxide-semiconductor drive circuit in bi-directional;
Metal-oxide-semiconductor drive circuit in bi-directional, for driving transmitting coil, input end connects positive source, the first drive singal, the second drive singal and ground respectively, two output terminals transmitting coil in parallel and shunt-wound capacitance;
Transmitting coil, for launching the magnetic-pulse signal of the two track data information that are loaded with to POS terminal.
In one preferred embodiment, described first fsk signal and described second fsk signal are complementary signal.
In one preferred embodiment, described first time delay buffer circuit is identical with the second time delay buffer circuit structure.
In one preferred embodiment, described first time delay buffer circuit is as follows with the second time delay buffer circuit structure: fsk signal input end is connected one end of the first resistance, the other end of the first resistance also connects one end of the second resistance and the first electric capacity, the other end ground connection of the second resistance and the first electric capacity.
In one preferred embodiment, described metal-oxide-semiconductor drive circuit in bi-directional comprises the first NMOS tube, second NMOS tube, 3rd NMOS tube and the 4th NMOS tube, the drain electrode of the first NMOS tube and the second NMOS tube connects positive source, the source ground of the 3rd NMOS tube and the 4th NMOS tube, the source electrode of the first NMOS tube connects the drain electrode of the 4th NMOS tube, the source electrode of the second NMOS tube connects the drain electrode of the 3rd NMOS tube, the grid of the first NMOS tube and the 3rd NMOS tube connects the first drive singal, the grid of the second NMOS tube and the 4th NMOS tube connects the second drive singal, connect transmitting coil and shunt-wound capacitance between the source electrode of the first NMOS tube and the drain electrode of the 3rd NMOS tube.
In one preferred embodiment, when mobile payment device initialization runs, described main control chip is reception account information data wirelessly.
The utility model is adopted to have following beneficial effect:
1, widened the time that signal rises, effectively improved the sharp variation characteristic in power good, output terminal magnetic field, be more conducive to the pulsed magnetic field of POS terminal magnetic head to transmitting coil and catch and identify;
2, shunt-wound capacitance restrained effectively at transmitting coil two ends due to the surge voltage that the transition in drive level direction causes, and then restrained effectively the surge magnetic-pulse in magnetic field;
3, metal-oxide-semiconductor drive circuit in bi-directional makes transmitting coil power directly to obtain from power supply, make to drive the ability of transmitting coil to be only limited to power supply peak power output, effectively enhance driving force, in the coil carrying out good impedance match, maximum power transfer can be realized, the magnetic field intensity of coil excitation can be promoted effectively, effectively improve the service efficiency of power supply.
Accompanying drawing explanation
The voltage at transmitting coil two ends and the magnetic-pulse signal waveform schematic diagram of transmitting when Fig. 1 is control chip I/O port Direct driver transmitting coil;
Fig. 2 is the theory diagram of the mobile payment device of the utility model embodiment;
Fig. 3 is the circuit theory diagrams of the mobile payment device of the utility model embodiment;
Fig. 4 is the voltage at transmitting coil two ends and the magnetic-pulse signal waveform schematic diagram of transmitting after the mobile payment device by the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See Fig. 1, be depicted as the theory diagram of the mobile payment device of the utility model embodiment, it comprises: main control chip 10, for taking account information data as input, exports with square wave the fsk signal of the two track data information that are loaded with after FSK modulation being main carrier; First time delay buffer circuit 20, for receiving the first fsk signal that main control chip first output port exports, and exports the first input end of the first drive singal to metal-oxide-semiconductor drive circuit in bi-directional; Second time delay buffer circuit 30, for receiving the second fsk signal that main control chip second output port exports, and exports second input end of the second drive singal to metal-oxide-semiconductor drive circuit in bi-directional; Metal-oxide-semiconductor drive circuit in bi-directional 40, for driving transmitting coil 10, input end connects positive source, the first drive singal, the second drive singal and ground respectively, two output terminals transmitting coil 50 in parallel and shunt-wound capacitance 60; Transmitting coil 50, for launching the magnetic-pulse signal of the two track data information that are loaded with to POS terminal.By the mobile payment device arranged above, the time that signal rises widened by time delay buffer circuit, restrained effectively at transmitting coil two ends due to the surge voltage that the transition in drive level direction causes, effectively driving force is enhanced by metal-oxide-semiconductor drive circuit in bi-directional, in the coil carrying out good impedance match, can realize maximum power transfer, the magnetic field intensity that transmitting coil is excited can be promoted effectively, effectively improves the service efficiency of power supply.
In preferably application example, when mobile payment device initialization runs, main control chip 10 wirelessly receives account information data.When initialization runs, the accounts information of mobile payment device binding in order to pay, when mobile device follow-up operation, can launch to POS terminal and comprise the accounts information bound, for paying.
In an embody rule example, the first fsk signal and described second fsk signal are complementary signal.In an embody rule example, the first time delay buffer circuit 30 is identical with the second time delay buffer circuit 50 structure.Shown in Figure 2, first time delay buffer circuit 30 is as follows with the second time delay buffer circuit 50 structure: fsk signal input end is connected one end of the first resistance R1, the other end of the first resistance R1 also connects one end of the second resistance R2 and the first electric capacity C1, the other end ground connection of the second resistance R2 and the first electric capacity C1.Metal-oxide-semiconductor drive circuit in bi-directional comprises the first NMOS tube Q1, the second NMOS tube Q2, the 3rd NMOS tube Q3 and the 4th NMOS tube Q4, the drain electrode of Q1 and Q2 connects positive source, the source ground of Q3 and Q4, the source electrode of Q1 connects the drain electrode of Q4, the source electrode of Q2 connects the drain electrode of Q3, the grid of Q1 and Q3 connects the first drive singal, the grid of Q2 and Q4 connects the second drive singal, connects transmitting coil 50 and shunt-wound capacitance 60 between the source electrode of Q1 and the drain electrode of Q3.Its course of work and beneficial effect as follows:
1) (be described with IO_1 port) when the I/O port output level of main control chip switches from low to high, electric capacity by the state be discharged completely with time constant
carry out rapid charge, R1, R2, C1 are connected on the output port of main control chip, originally the step signal characteristic that the signal exported on IO_1 port presents, after time delay buffer circuit via R1, R2, C1 composition, the signal that first driving circuit exports presents the trend that growth rate is successively decreased gradually, widen the time that signal rises, effectively improved the sharp variation characteristic in output terminal magnetic field, be more conducive to magnetic head and carrier wave magnetic field caught and identifies.Meanwhile another effective means that this circuit improves magnetic field sharp change characteristic at transmitting coil two ends shunt-wound capacitance, after shunt-wound capacitance, effectively inhibit at transmitting coil two ends due to the surge voltage that the transition in drive level direction causes, and then effectively inhibit the surge magnetic-pulse in magnetic field.
2) for bi-directional drive metal-oxide-semiconductor circuit 50, when IO_1 end exports high level, IO_2 holds output low level, namely FSK_1 is high level, FSK_2 is low level, the level signal that port IO_1 slowly rises triggers metal-oxide-semiconductor and carries out switch motion, make Q1 and Q3 conducting simultaneously, electric current directly carries out rapid charge by the positive pole of power supply via the shunt-wound capacitance 60 at coil two ends, make to be connected to NMOS tube Q1 source terminal and COIL_1 end-coil voltage is inhibited, transition can not be there is, until shunt-wound capacitance is full of electricity, originally the IO_1 port output low level of high level is exported when carrying out state and switching, originally the OI_2 port of output low level exports high level, shunt-wound capacitance 60 is made just to have started to discharge fast relative to the twice of charging hourly velocity, after being discharged and then carry out reverse charging, the fast charging and discharging of electric capacity effectively inhibits the surge produced when driving source carries out instantaneous switching, see Fig. 4, be depicted as the voltage at transmitting coil two ends and the magnetic-pulse signal waveform schematic diagram of transmitting after the mobile payment device by the utility model embodiment, wherein Vcoil_1 is the voltage oscillogram of transmitting coil one end, Vcoil_2 is the voltage oscillogram of transmitting coil one end, Icoil is the magnetic-pulse waveform schematic diagram of transmitting coil, relative to Fig. 1, Vcoil_1, the spike of Vcoil_2 and Icoil is obviously inhibited, transmitting coil is powered and is directly obtained from power supply, make to drive the ability of transmitting coil to be only limited to power supply peak power output, effectively enhance driving force, in the coil carrying out good impedance match, maximum power transfer can be realized, the magnetic field intensity that transmitting coil is excited can be promoted effectively, effectively improve the service efficiency of power supply, and add the identification sensitivity of POS terminal to magnetic-pulse signal.
Should be appreciated that exemplary embodiment as herein described is illustrative and nonrestrictive.And, can by each embodiment about each feature or in description be applicable to other similar characteristics in other embodiments or in.
Although describe one or more embodiment of the present utility model by reference to the accompanying drawings, those of ordinary skill in the art are to be understood that, when not departing from the spirit and scope of the present utility model limited by claims, the change of various forms and details can be made.
Claims (6)
1. a mobile payment device, is characterized in that, comprising:
Main control chip (10), for taking account information data as input, I/O port exports with square wave the fsk signal of the two track data information that are loaded with after FSK modulation being main carrier;
First time delay buffer circuit (20), for receiving the first fsk signal that main control chip first output port exports, and exports the first input end of the first drive singal to metal-oxide-semiconductor drive circuit in bi-directional;
Second time delay buffer circuit (30), for receiving the second fsk signal that main control chip second output port exports, and exports second input end of the second drive singal to metal-oxide-semiconductor drive circuit in bi-directional;
Metal-oxide-semiconductor drive circuit in bi-directional (40), for driving transmitting coil (10), input end connects positive source, the first drive singal, the second drive singal and ground respectively, two output terminals transmitting coil (50) in parallel and shunt-wound capacitance (60);
Transmitting coil (50), for launching the magnetic-pulse signal of the two track data information that are loaded with to POS terminal.
2. according to mobile payment device according to claim 1, it is characterized in that, described first fsk signal and described second fsk signal are complementary signal.
3. according to mobile payment device according to claim 1, it is characterized in that, described first time delay buffer circuit (20) is identical with the second time delay buffer circuit (30) structure.
4. according to the arbitrary described mobile payment device of claims 1 to 3, it is characterized in that, described first time delay buffer circuit (20) is as follows with the second time delay buffer circuit (30) structure: fsk signal input end is connected one end of the first resistance, the other end of the first resistance also connects one end of the second resistance and the first electric capacity, the other end ground connection of the second resistance and the first electric capacity.
5. according to the arbitrary described mobile payment device of claims 1 to 3, it is characterized in that, described metal-oxide-semiconductor drive circuit in bi-directional comprises the first NMOS tube, second NMOS tube, 3rd NMOS tube and the 4th NMOS tube, the drain electrode of the first NMOS tube and the second NMOS tube connects positive source, the source ground of the 3rd NMOS tube and the 4th NMOS tube, the source electrode of the first NMOS tube connects the drain electrode of the 4th NMOS tube, the source electrode of the second NMOS tube connects the drain electrode of the 3rd NMOS tube, the grid of the first NMOS tube and the 3rd NMOS tube connects the first drive singal, the grid of the second NMOS tube and the 4th NMOS tube connects the second drive singal, transmitting coil (50) and shunt-wound capacitance (60) is connect between the source electrode of the first NMOS tube and the drain electrode of the 3rd NMOS tube.
6., according to the arbitrary described mobile payment device of claims 1 to 3, it is characterized in that, when mobile payment device initialization runs, described main control chip is reception account information data wirelessly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520867172.9U CN205091789U (en) | 2015-11-03 | 2015-11-03 | Mobile payment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520867172.9U CN205091789U (en) | 2015-11-03 | 2015-11-03 | Mobile payment device |
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| CN205091789U true CN205091789U (en) | 2016-03-16 |
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| CN201520867172.9U Expired - Fee Related CN205091789U (en) | 2015-11-03 | 2015-11-03 | Mobile payment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335849A (en) * | 2015-11-03 | 2016-02-17 | 上海易码信息科技有限公司 | Mobile payment apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105335849A (en) * | 2015-11-03 | 2016-02-17 | 上海易码信息科技有限公司 | Mobile payment apparatus |
| WO2017076302A1 (en) * | 2015-11-03 | 2017-05-11 | 上海易码信息科技有限公司 | Mobile payment device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Xiongwei Inventor after: Yang Tiedang Inventor after: Zhang Yinong Inventor before: Xu Xiongwei Inventor before: Lu Shuigen Inventor before: Yang Tiedang Inventor before: Zhang Yinong |
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| COR | Change of bibliographic data | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20181103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |