CN202306717U - Payment circuit of mobile payment terminal - Google Patents
Payment circuit of mobile payment terminal Download PDFInfo
- Publication number
- CN202306717U CN202306717U CN201120407474XU CN201120407474U CN202306717U CN 202306717 U CN202306717 U CN 202306717U CN 201120407474X U CN201120407474X U CN 201120407474XU CN 201120407474 U CN201120407474 U CN 201120407474U CN 202306717 U CN202306717 U CN 202306717U
- Authority
- CN
- China
- Prior art keywords
- diode
- circuit
- capacitor
- chip microcomputer
- anode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model is applicable to the field of payment, and provides a payment circuit of a mobile payment terminal. The circuit comprises a voltage stabilizing circuit, a single chip microcomputer and a blocking and rectifying circuit, wherein the blocking and rectifying circuit comprises a capacitor C1, a diode D1 and a diode D2; one terminal of the capacitor C1 is connected with one terminal for inputting earphone audio signals; the other terminal of the capacitor C1 is respectively connected with an anode of the diode D2 and a cathode of the diode D1; an anode of the diode D1 is connected with the other terminal for inputting the earphone audio signals and then grounded; and a cathode of the diode D2 is connected with an input terminal of the single chip microcomputer through the voltage stabilizing circuit. The technical scheme provided by the utility model has the advantage of low cost.
Description
Technical field
The utility model belongs to the E-Payment field, relates in particular to the payment circuit at a kind of mobile payment terminal.
Background technology
Along with the innovation and the development of science and technology, portable terminal is used more and more widely, and the bank card payment terminal is also developed to payment terminal+cell phone system by traditional P OS machine+computer system.Because the USB interface of various brands mobile phone, the shape difference opposite sex is big, and the shape of handset earphone mouth, electric definition are all consistent, so connect payment terminal with earpiece holes at present and mobile phone is a preferred option.In case come to the payment terminal power supply through earpiece holes, whole payment terminal will be simpler.
The sound channel signal of handset earphone hole output is by very strong forming at a distance from straight sound signal and very weak direct current signal.Have only this sound channel signal is carried out just obtaining DC voltage later at a distance from straight and rectification, carry out the WV that voltage transformation obtains system again.The circuit structure diagram of traditional isolation technology is as shown in Figure 1; Mainly be to adopt transformer (T) to isolate; It both can carry out the isolation of voltage, can also carry out the buck of voltage, and traditional full-wave rectification technology is to adopt 4 FETs (Q1, Q2, Q3, Q4) to carry out rectification.
In the process that realizes the utility model, find that there is following problem in the technical scheme of prior art:
Circuit of the prior art adopts transformer isolation and 4 FETs, and volume of transformer is big, and cost is high, and 4 FETs take up room greatly, so existing circuit structure cost is high.
The utility model content
The purpose of the utility model embodiment is to provide the payment circuit at a kind of mobile payment terminal, is intended to solve the high problem of existing technical scheme cost.
The utility model embodiment is achieved in that the utility model provides the payment circuit at a kind of mobile payment terminal on the one hand, and said circuit comprises: mu balanced circuit and single-chip microcomputer, and said circuit also comprises: at a distance from straight rectification circuit; Wherein:
Should comprise at a distance from straight rectification circuit: capacitor C 1, diode D1 and diode D2, an end of capacitor C 1 is connected with an end of earpiece audio signal input, and the other end of capacitor C 1 is connected with the anode of diode D2 and the negative electrode of diode D1 respectively; The anode of diode D1 is connected back ground connection with the other end of earpiece audio signal input, and the negative electrode of diode D2 is connected with an input end of single-chip microcomputer through mu balanced circuit.
In the utility model embodiment, the technical scheme that the utility model provides has promptly reached the effect at a distance from straight rectification through an electric capacity and two diodes, so it has the low advantage of cost.
Description of drawings
Fig. 1 is the structural drawing of the payment circuit at the mobile payment terminal that provides of prior art;
Fig. 2 is the structural drawing of the payment circuit at a kind of mobile payment terminal of providing of the utility model;
Fig. 3 is the sound signal that provides of the utility model through the output waveform figure after straight;
Fig. 4 is the oscillogram of sound signal behind overcommutation that the utility model provides.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The payment circuit at a kind of mobile payment terminal that the utility model provides, the structure of this circuit is as shown in Figure 2, comprising: at a distance from straight rectification circuit 21, mu balanced circuit 22 and single-chip microcomputer 23; Wherein, this comprises at a distance from straight rectification circuit 21: capacitor C 1, diode D1 and diode D2, and an end of capacitor C 1 is connected with an end of earpiece audio signal input, and the other end of capacitor C 1 is connected with the anode of diode D2 and the negative electrode of diode D1 respectively; The anode of diode D1 is connected back ground connection with the other end of earpiece audio signal input, and the negative electrode of diode D2 is connected with an input end of single-chip microcomputer 23 through mu balanced circuit 22.
Optional, above-mentioned mu balanced circuit 22 comprises: capacitor C 2 and stabilivolt D3; Wherein, an end of capacitor C 2 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 capacitor C 2 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.
Optional, above-mentioned diode D1 and diode D2 all can be the low pressure differential commutation diode.
Optional, above-mentioned single-chip microcomputer specifically can be the C8051F9 series monolithic.
The principle that circuit that the utility model provides is realized specifically can for:
Wherein C1 is a capacitance, removes the weak direct current biasing on the sound channel line, through the sound signal on the sound channel line.Output waveform after straight is as shown in Figure 3.D1, D2 are the low pressure differential commutation diode, and it is the forward voltage signal of benchmark that the sound signal of the suspension of capacitance C1 output is rectified into the ground wire, has differential loss of 0.24V in the middle of this, and the bottom that is embodied in waveform can be by the sub-fraction of pruning.Waveform after the rectification is as shown in Figure 4.
In addition, what single-chip microcomputer was selected for use is the new C8051F9xx series monolithic of releasing in this year, and it has realized can exporting the 3V voltage output less than 20mA with the power supply mode of single-unit button cell (0.9～1.8V voltage) and through internal conversion.This voltage can be used for to other digital circuit power supply of system.
The circuit that the utility model provides has adopted the characteristics of the logical AC signal stopping direct current signal of electric capacity, carries out the isolation of signal, and has avoided the voltage body long-pending big; The shortcoming that cost is high; So it has the advantage that reduces cost, the utility model rectification has only adopted two diodes to carry out full-wave rectification in addition, rather than four traditional FETs; Reduce the quantity of diode, reduced the usable floor area of cost and pcb board; And the utility model has adopted a kind of novel single-chip microcomputer C8051F9xx, utilizes its additional function, has realized the conversion of 1.8V voltage to 3V voltage, has saved the DC-DC chip that boosts.
The those skilled in the art can be well understood to, for the convenience described with succinct, the concrete course of work of the system of foregoing description, device and unit can repeat no more at this with reference to the corresponding process among the preceding method embodiment.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. the payment circuit at a mobile payment terminal, said circuit comprises: mu balanced circuit and single-chip microcomputer is characterized in that said circuit also comprises: at a distance from straight rectification circuit; Wherein:
Should comprise at a distance from straight rectification circuit: capacitor C 1, diode D1 and diode D2, an end of capacitor C 1 is connected with an end of earpiece audio signal input, and the other end of capacitor C 1 is connected with the anode of diode D2 and the negative electrode of diode D1 respectively; The anode of diode D1 is connected back ground connection with the other end of earpiece audio signal input, and the negative electrode of diode D2 is connected with an input end of single-chip microcomputer through mu balanced circuit.
2. circuit according to claim 1 is characterized in that, said mu balanced circuit comprises:
Capacitor C 2 and stabilivolt D3; Wherein, an end of capacitor C 2 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 capacitor C 2 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.
3. circuit according to claim 1 and 2 is characterized in that, said diode D1 or said diode D2 are: the low pressure differential commutation diode.
4. circuit according to claim 1 and 2 is characterized in that, said single-chip microcomputer is specially: the C8051F9 series monolithic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120407474XU CN202306717U (en) | 2011-10-24 | 2011-10-24 | Payment circuit of mobile payment terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120407474XU CN202306717U (en) | 2011-10-24 | 2011-10-24 | Payment circuit of mobile payment terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202306717U true CN202306717U (en) | 2012-07-04 |
Family
ID=46375567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120407474XU Withdrawn - After Issue CN202306717U (en) | 2011-10-24 | 2011-10-24 | Payment circuit of mobile payment terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202306717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700513A (en) * | 2013-12-06 | 2015-06-10 | 牛毅 | Audio-interface self-adaptation circuit, cellphone card reader and audio-interface self-adaptation method |
-
2011
- 2011-10-24 CN CN201120407474XU patent/CN202306717U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700513A (en) * | 2013-12-06 | 2015-06-10 | 牛毅 | Audio-interface self-adaptation circuit, cellphone card reader and audio-interface self-adaptation method |
| CN104700513B (en) * | 2013-12-06 | 2017-04-26 | 牛毅 | Audio-interface self-adaptation circuit, cellphone card reader and audio-interface self-adaptation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103490487A (en) | Wireless charging device for watch-type electronic products | |
| CN202306717U (en) | Payment circuit of mobile payment terminal | |
| CN102364515B (en) | Payment circuit of mobile payment terminal | |
| CN103108061B (en) | Mobile phone, device and method capable of conducting electric energy transfer based on mobile phone audio interface | |
| CN203492198U (en) | Condenser microphone connecting line for providing phantom power via USB interface | |
| CN204046673U (en) | A kind of mobile phone with double cell function | |
| CN203707819U (en) | Wireless charging system | |
| CN203551782U (en) | Portable Beidou RD communication device | |
| CN108448748A (en) | A kind of Energy Management System | |
| CN205081535U (en) | WIFI reinforcing cell -phone charger | |
| CN204761116U (en) | Energy -concerving and environment -protective portable power source | |
| CN201327620Y (en) | Computer power | |
| CN203691584U (en) | Low-power wireless microphone | |
| CN209184279U (en) | A kind of USB-PD and USBA mouthfuls of universal circuits | |
| CN204030645U (en) | The charging circuit of portable power source | |
| CN203423791U (en) | Apparatus capable of realizing electric energy acquisition and communication by use of electronic device audio interface | |
| CN201966449U (en) | Hub for portable electronic equipment | |
| CN203589772U (en) | Double-USB charging circuit and charger | |
| CN203166571U (en) | Charger with charging recognition function | |
| CN202267913U (en) | Power supply management circuit for tablet computer | |
| CN207353901U (en) | A kind of portable multi-function ups power | |
| CN204794305U (en) | Intelligence vary voltage charger | |
| CN202111631U (en) | Power supply for network electric power instrument | |
| CN203722289U (en) | Charging circuit capable of realizing mutual charging between electronic devices | |
| CN204350071U (en) | A kind of mobile phone earphone interface power-supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20141217 |
|
| RGAV | Abandon patent right to avoid regrant |