CN102364515B - Payment circuit of mobile payment terminal - Google Patents
Payment circuit of mobile payment terminal Download PDFInfo
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- CN102364515B CN102364515B CN201110325124.3A CN201110325124A CN102364515B CN 102364515 B CN102364515 B CN 102364515B CN 201110325124 A CN201110325124 A CN 201110325124A CN 102364515 B CN102364515 B CN 102364515B
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Abstract
The invention is suitable for the field of payment, and provides a payment circuit of a mobile payment terminal, which comprises a voltage-stabilizing circuit and a singlechip, and also comprises a blocking rectifier capacitor, wherein the blocking rectifier capacitor comprises a capacitor C1, a diode D1 and a diode D2, wherein one end of the capacitor C1 is connected with the audio signal input end of an earphone, the other end of the capacitor C1 is respectively connected with the anode of the diode D2 and the cathode of the diode D1; and the anode of the diode D1 is connected with the other audio signal input end of the earphone and then grounded, and the cathode of the diode D2 is connected with one input end of the singlechip through the voltage-stabilizing circuit. The technical scheme provided by the invention has the advantage of low cost.
Description
Technical field
The invention belongs to E-Payment field, particularly relate to a kind of payment circuit of Mobile payment terminal.
Background technology
Along with the Innovation and development of science and technology, it is more and more extensive that mobile terminal is applied, and bank card payment terminal is also developed to payment terminal+cell phone system by traditional POS+computer system.Due to the USB interface of various brands mobile phone, the shape difference opposite sex is large, and the shape of mobile phone earphone interface, electrically definition are all consistent, so connect payment terminal by earpiece holes at present and mobile phone is preferred option.Once be powered to payment terminal by earpiece holes, whole payment terminal will be simpler.
The sound channel signal that handset earphone hole exports is made up of every straight sound signal and very weak direct current signal very strong.Only have and this sound channel signal is carried out just obtaining DC voltage every straight and rectification later, then carry out the operating voltage that voltage transformation obtains system.The circuit structure diagram of traditional isolation technology as shown in Figure 1, transformer (T) is mainly adopted to isolate, it both can carry out the isolation of voltage, can also carry out the buck of voltage, traditional full-wave rectification technology is that employing 4 field effect transistor (Q1, Q2, Q3, Q4) carry out rectification.
Realizing in process of the present invention, there are the following problems for the technical scheme of discovery prior art:
Circuit of the prior art adopts transformer isolation and 4 field effect transistor, and volume of transformer is large, and cost is high, and 4 field effect transistor take up room greatly, so existing circuit structure cost is high.
Summary of the invention
The object of the embodiment of the present invention is the payment circuit providing a kind of Mobile payment terminal, is intended to solve the high problem of existing technical scheme cost.
The embodiment of the present invention is achieved in that the invention provides a kind of payment circuit of Mobile payment terminal, described circuit comprises: mu balanced circuit and single-chip microcomputer, and described circuit also comprises: every straight rectification circuit on the one hand; Wherein:
Should comprise every straight rectification circuit: electric capacity C1, diode D1 and diode D2, one end that one end and the earpiece audio signal of electric capacity C1 input is connected, and the other end of electric capacity C1 is connected with the anode of diode D2 and the negative electrode of diode D1 respectively; The other end that anode and the earpiece audio signal of diode D1 input is connected rear ground connection, and the negative electrode of diode D2 is connected with an input end of single-chip microcomputer by mu balanced circuit.
In embodiments of the present invention, namely technical scheme provided by the invention reaches the effect every straight rectification, so it has the low advantage of cost by an electric capacity and two diodes.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the payment circuit of the Mobile payment terminal that prior art provides;
Fig. 2 is the structural drawing of the payment circuit of a kind of Mobile payment terminal provided by the invention;
Fig. 3 is sound signal provided by the invention through the output waveform figure after straight;
Fig. 4 is the oscillogram of sound signal provided by the invention after overcommutation.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The payment circuit of a kind of Mobile payment terminal provided by the invention, the structure of this circuit as shown in Figure 2, comprising: every straight rectification circuit 21, mu balanced circuit 22 and single-chip microcomputer 23; Wherein, should comprise every straight rectification circuit 21: electric capacity C1, diode D1 and diode D2, one end that one end and the earpiece audio signal of electric capacity C1 input is connected, and the other end of electric capacity C1 is connected with the anode of diode D2 and the negative electrode of diode D1 respectively; The other end that anode and the earpiece audio signal of diode D1 input is connected rear ground connection, and the negative electrode of diode D2 is connected with an input end of single-chip microcomputer 23 by mu balanced circuit 22.
Optionally, above-mentioned mu balanced circuit 22 comprises: electric capacity C2 and stabilivolt D3; Wherein, one end of electric capacity C2 is connected with the negative electrode of diode D2 and is connected with an input end of single-chip microcomputer 23; The negative electrode of stabilivolt D3 is connected with the negative electrode of diode D2 and is connected with an input end of single-chip microcomputer 23; The other end of electric capacity C2 is connected with the anode of diode D1 and is connected with another input end of single-chip microcomputer 23, and the anode of stabilivolt D3 is connected with the anode of diode D1 and is connected with an input end of single-chip microcomputer 23.
Optionally, above-mentioned diode D1 and diode D2 can be all: low voltage difference commutation diode.
Optionally, above-mentioned single-chip microcomputer is specifically as follows: C8051F9 series monolithic.
The principle of circuit realiration provided by the invention is specifically as follows:
Wherein C1 is capacitance, removes the weak direct current biasing on sound channel line, by the sound signal on sound channel line.Output waveform after straight as shown in Figure 3.D1, D2 are low voltage difference commutation diode, and being rectified into the sound signal of suspension that capacitance C1 exports with ground wire is the forward voltage signal of benchmark, and have differential loss of 0.24V in the middle of this, the bottom being embodied in waveform can by sub-fraction of pruning.Waveform after rectification as shown in Figure 4.
In addition, what single-chip microcomputer was selected is the C8051F9xx series monolithic newly released this year, it achieves the power supply mode with single-unit button cell (0.9 ~ 1.8V voltage) and can export by internal conversion the 3V voltage being less than 20mA to export.This voltage can be used for other supplying digital circuits of system.
Circuit provided by the invention have employed the feature that electric capacity leads to AC signal stopping direct current signal, carry out the isolation of signal, and it is large to avoid voltage device volume, the shortcoming that cost is high, so it has the advantage reduced costs, rectification of the present invention only have employed two diodes and carries out full-wave rectification in addition, instead of traditional four field effect transistor, decrease the quantity of diode, reduce the usable floor area of cost and pcb board; And present invention employs a kind of novel single-chip microcomputer C8051F9xx, utilize its additional function, achieve the conversion of 1.8V voltage to 3V voltage, eliminate DC-DC boost chip.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a payment circuit for Mobile payment terminal, described circuit comprises: mu balanced circuit and single-chip microcomputer, is characterized in that, described circuit also comprises: every straight rectification circuit; Wherein:
Should comprise every straight rectification circuit: electric capacity C1, diode D1 and diode D2, one end that one end and the earpiece audio signal of electric capacity C1 input is connected, and the other end of electric capacity C1 is connected with the anode of diode D2 and the negative electrode of diode D1 respectively; The other end that anode and the earpiece audio signal of diode D1 input is connected rear ground connection, and the negative electrode of diode D2 is connected with an input end of single-chip microcomputer (23) by mu balanced circuit;
Described mu balanced circuit comprises: electric capacity C2 and stabilivolt D3; Wherein, one end of electric capacity C2 is connected with the negative electrode of diode D2 and is connected with an input end of single-chip microcomputer (23); The negative electrode of stabilivolt D3 is connected with the negative electrode of diode D2 and is connected with an input end of single-chip microcomputer (23); The other end of electric capacity C2 is connected with the anode of diode D1 and is connected with another input end of single-chip microcomputer (23), and the anode of stabilivolt D3 is connected with the anode of diode D1 and is connected with another input end of single-chip microcomputer (23).
2. circuit according to claim 1, is characterized in that, described diode D1 or described diode D2 is: low voltage difference commutation diode.
3. circuit according to claim 1, is characterized in that, described single-chip microcomputer is specially: C8051F9 series monolithic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325124.3A CN102364515B (en) | 2011-10-24 | 2011-10-24 | Payment circuit of mobile payment terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325124.3A CN102364515B (en) | 2011-10-24 | 2011-10-24 | Payment circuit of mobile payment terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102364515A CN102364515A (en) | 2012-02-29 |
| CN102364515B true CN102364515B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110325124.3A Active CN102364515B (en) | 2011-10-24 | 2011-10-24 | Payment circuit of mobile payment terminal |
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Families Citing this family (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 |
| CN112820045B (en) * | 2021-01-14 | 2022-03-11 | 深圳市易捷通科技股份有限公司 | Man-machine interaction commercial payment terminal equipped with automatic lifting seat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136553A (en) * | 2006-09-01 | 2008-03-05 | 鸿富锦精密工业（深圳）有限公司 | Emergent charging apparatus |
| CN101227670A (en) * | 2007-11-20 | 2008-07-23 | 东莞欧珀移动通信有限公司 | Mobile phone line control machine and control method thereof |
| CN101989669A (en) * | 2009-07-31 | 2011-03-23 | 厄奇林克公司 | Universal system for charging at least one portable device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2885246B1 (en) * | 2005-04-29 | 2007-06-15 | Thales Sa | SAFE TERMINAL OF SECURE ELECTRONIC TRANSACTIONS AND SECURE ELECTRONIC TRANSACTION SYSTEM |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136553A (en) * | 2006-09-01 | 2008-03-05 | 鸿富锦精密工业（深圳）有限公司 | Emergent charging apparatus |
| CN101227670A (en) * | 2007-11-20 | 2008-07-23 | 东莞欧珀移动通信有限公司 | Mobile phone line control machine and control method thereof |
| CN101989669A (en) * | 2009-07-31 | 2011-03-23 | 厄奇林克公司 | Universal system for charging at least one portable device |
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| CN102364515A (en) | 2012-02-29 |
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Address after: Guangdong Nanshan District street of Shenzhen city in Guangdong province 518000 software industry base in Shenzhen, fifth building room 505 Patentee after: Shenzhen box Mdt InfoTech Ltd Address before: 518000 Guangdong Shenzhen city Futian District Huaqiang North Road deep spinning building B1005 Patentee before: Shenzhen Iboxpay Information Technology Co.,Ltd. |