CN205247447U - Be applied to sound wave payment circuit of POS end - Google Patents
Be applied to sound wave payment circuit of POS end Download PDFInfo
- Publication number
- CN205247447U CN205247447U CN201521023705.1U CN201521023705U CN205247447U CN 205247447 U CN205247447 U CN 205247447U CN 201521023705 U CN201521023705 U CN 201521023705U CN 205247447 U CN205247447 U CN 205247447U
- Authority
- CN
- China
- Prior art keywords
- circuit
- sound wave
- resistance
- signal
- electric capacity
- 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.)
- Active
Links
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
The utility model relates to a be applied to sound wave payment circuit of POS end realizes the quick payment of POS end. This circuit is including the audio input circuit, an operational circuit, the 2nd operational circuit, N passageway frequency -selecting circuit and the microcontroller that connect gradually, the audio input circuit for sampling audio signal is sound signal conversion the signal of telecommunication and exports an operational circuit to, an operational circuit for the signal of telecommunication after will changing amplifies and exports the 2nd operational circuit to, the 2nd operational circuit for the realization is to the filtering of the signal of telecommunication after enlargeing and export N passageway frequency -selecting circuit to, N passageway frequency -selecting circuit for the realization is to post -filter electricity signal frequency's selection, microcontroller for the sampling is handled N passageway frequency -selecting circuit output signal accomplishes the FSK demodulation to this output signal to the payment of realization sound wave. The utility model discloses with low costs, the circuit simple structure has realized the quick payment of POS end.
Description
Technical field
The utility model relates to a kind of sound wave payment circuit of the POS of being applied to end, is particularly applied to the sound wave payment circuit between mobile phone and POS.
Background technology
Along with the development of mobile technology and universal, mobile-phone payment becomes emerging E-Payment form gradually. Mobile payment characteristic is to adopt mobile phone to complete relevant payment, at present mobile phone with the means of payment can be bluetooth, WIFI, NFC etc., these are all realized by electromagnetic wave mode. The participation connection procedure that bluetooth and WIFI Technology Need are artificial, is not suitable for being applied to the scene of rapid payment, also needs equipment to increase interlock circuit simultaneously; Secondly, NFC need increase extra RFID chip in mobile phone terminal support, and popularization on mobile phone is lower; But sound wave pays only needs mobile phone terminal to have MIC, and that MIC is mobile phone is necessary, and mobile phone is brought in does not need to increase any extra hardware cost, and is applicable to rapid payment, has in actual applications significant advantage.
Summary of the invention
The purpose of this utility model is to provide one to address the above problem, and realizes the sound wave payment circuit that is applied to POS end of rapid payment.
For achieving the above object, the technical solution of the utility model is: a kind of sound wave payment circuit that is applied to POS end, comprises the audio input circuit, the first discharge circuit, the second discharge circuit, N passage frequency selection circuit and the microcontroller that connect successively; Described audio input circuit, for sampled audio signal, is converted to acoustical signal the signal of telecommunication and exports the first discharge circuit to; Described the first discharge circuit, for amplifying the signal of telecommunication after conversion export the second discharge circuit to; Described the second discharge circuit, for realizing the filtering to the signal of telecommunication after amplifying and exporting N passage frequency selection circuit to; Described N passage frequency selection circuit, for realizing the selection to signal of telecommunication frequency after filtering; Described microcontroller, for sampling and processing described N passage frequency selection circuit output signal, completes the FSK demodulation to this output signal, pays to realize sound wave; Wherein, N is more than or equal to 2 natural number.
In the utility model one embodiment, described the first discharge circuit adoption rate amplifying circuit.
In the utility model one embodiment, described the second discharge circuit adopts bandpass filter.
In the utility model one embodiment, described audio input circuit comprises the first to second resistance, the first to the 3rd electric capacity and the first connector; Described the first connector is connected to MIC, for gathering audio signal; Described first, second resistance and the first electric capacity form the biasing circuit of MIC; Described the 3rd electric capacity is connected between MIC output and ground, for filtering; Described the second electric capacity is connected to MIC output and described the first discharge circuit input, for AC coupled.
In the utility model one embodiment, described the first discharge circuit comprises the 3rd to the 6th resistance, the 4th to the 5th electric capacity and the first amplifier; Described the 3rd resistance and the 4th resistance form input biasing; Described the 5th, the 6th resistance, the 4th, the 5th electric capacity composition are amplified and feedback; The output of described the first amplifier is connected to the input of described the second discharge circuit.
In the utility model one embodiment, described the second discharge circuit comprises the first four-way integrated transporting discharging, the 7th to the 17 resistance and the 6th to the 13 electric capacity, and described the first four-way integrated transporting discharging comprises the second to the 5th amplifier; Described the 7th, the 8th resistance, the 6th, the 7th electric capacity and described the second amplifier form reference voltage generating circuit; Described the 9th to the 17 resistance, the 8th to the 13 electric capacity and described the 3rd to the 5th amplifier form three rank filter circuits.
In the utility model one embodiment, described N is 2, and described N passage frequency selection circuit comprises frequency selection circuit one and frequency selection circuit two; Described frequency selection circuit one is made up of the first fsk demodulator, the 18 to 20 resistance and the 14 to the 19 electric capacity; Described frequency selection circuit two is made up of the second fsk demodulator, the 21 to 23 resistance and the 20 to the 25 electric capacity.
In the utility model one embodiment, described microcontroller is made up of the first microcontroller, the 24 to 27 resistance, for gathering and process output signal frequency for described N passage frequency selection circuit output signal, determine the information of carrying in sound wave, and then complete sound wave payment.
Compared to prior art, the utlity model has following beneficial effect: the sound wave payment circuit that the utility model proposes, provide complete sound wave to pay solution and related circuit design, the frequency selection circuit that varying number can be set completes the FSK demodulation to described audio signal, the simultaneously greatly reduction of degree the requirement to microcontroller, be applicable to the application scenarios of POS end rapid payment.
Brief description of the drawings
Fig. 1 is the sound wave payment circuit block diagram that the utility model embodiment provides.
Fig. 2 is the utility model embodiment audio input circuit schematic diagram.
Fig. 3 is the utility model embodiment the first discharge circuit schematic diagram.
Fig. 4 is the utility model embodiment the second discharge circuit schematic diagram.
Fig. 5 is the utility model embodiment N passage frequency selection circuit (N is 2) schematic diagram.
Fig. 6 is the utility model embodiment microcontroller schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is specifically described.
As shown in Figure 1, a kind of sound wave payment circuit that is applied to POS end of the present utility model, comprises the audio input circuit, the first discharge circuit, the second discharge circuit, N passage frequency selection circuit and the microcontroller that connect successively; Described audio input circuit, for sampled audio signal, is converted to acoustical signal the signal of telecommunication and exports the first discharge circuit to; Described the first discharge circuit, for amplifying the signal of telecommunication after conversion export the second discharge circuit to; Described the second discharge circuit, for realizing the filtering to the signal of telecommunication after amplifying and exporting N passage frequency selection circuit to; Described N passage frequency selection circuit, for realizing the selection to signal of telecommunication frequency after filtering; Described microcontroller, for sampling and processing described N passage frequency selection circuit output signal, completes the FSK demodulation to this output signal, pays to realize sound wave; Wherein, N is more than or equal to 2 natural number.
Tell about the technical solution of the utility model below in conjunction with specific embodiment.
As shown in Figure 1, a kind of sound wave payment circuit, comprises audio input circuit, the first discharge circuit, the second discharge circuit, multichannel frequency selection circuit and microcontroller; Described audio input circuit, for the described audio signal of sampling, completes sound to electric conversion and outputs to the first discharge circuit; Described the first discharge circuit, is connected in the output of described audio input circuit, and adoption rate amplifying circuit, completes the amplification to described audio signal and output to the second discharge circuit; Described the second discharge circuit, is connected in described the first discharge circuit, adopts bandpass filter to complete the filtering to described audio signal and output to multichannel frequency selection circuit; Described multichannel frequency selection circuit, can be by frequency selection circuit one, frequency selection circuit two until frequency selection circuit N forms, and the quantity of described frequency selection circuit is relevant to the FSK demodulation agreement of described microcontroller, and described FSK demodulation agreement can customize; Described microcontroller, is connected in multichannel frequency selection circuit, for sampling and analyzing described multichannel frequency selection circuit output signal, completes the FSK demodulation to described audio signal.
The circuit design principle of the utility model embodiment is by described multichannel frequency-selective network, complete the selection to CF in described audio signal, and then complete the FSK demodulation to described audio signal according to different frequency, pay to complete sound wave, realize the application scenarios of POS end rapid payment.
As shown in Fig. 2-6, another embodiment of the utility model provides a physical circuit to realize: audio input circuit is made up of the first resistance, the second resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity and the first connector; Described the first connector is connected to MIC, for gathering described audio signal; Described the first resistance, the second resistance and the first electric capacity form the biasing circuit of MIC; Described the 3rd electric capacity is connected between MIC output and ground, for filtering; Described the second electric capacity connects described MIC output and described the first discharge circuit input, for AC coupled. Described the first discharge circuit is made up of the 3rd to the 6th resistance, the 4th to the 5th electric capacity and the first amplifier, for amplifying described audio signal and outputing to described the second discharge circuit; Described the 3rd resistance and the 4th resistance form input biasing; Described the 5th to the 6th resistance, the 4th to the 5th electric capacity composition are amplified and feedback. Described the second discharge circuit is made up of the first four-way integrated transporting discharging, the 7th to the 17 resistance and the 6th electric capacity to the 13 electric capacity, for described audio signal is carried out to filtering; Described the 7th to the 8th resistance, the 6th to the 7th electric capacity form reference voltage generating circuit; Described the 9th to the 17 resistance, the 8th to the 13 electric capacity form three rank filter circuits. In described multichannel frequency selection circuit embodiment, comprise frequency selection circuit one and frequency selection circuit two; Described frequency selection circuit one is made up of the first fsk demodulator, the 18 to 20 resistance and the 14 to the 19 electric capacity, for demodulation and export the set specific frequency signal that described audio signal is carried, and then outputs in microcontroller; Described frequency selection circuit two is made up of the second fsk demodulator, the 21 to 23 resistance and the 20 to the 25 electric capacity, for demodulation and export the set specific frequency signal that described audio signal is carried, and then outputs in microcontroller. Described microcontroller is made up of the first microcontroller and the 24 to 27 resistance, be used for for described frequency selection circuit Output Signal Analysis, by gathering and analyze output signal frequency and determining the information of carrying in sound wave by FSK demodulation mode, and then complete sound wave payment.
Be more than preferred embodiment of the present utility model, all changes of doing according to technical solutions of the utility model, when the function producing does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (8)
1. a sound wave payment circuit that is applied to POS end, is characterized in that: comprise the audio input circuit, the first discharge circuit, the second discharge circuit, N passage frequency selection circuit and the microcontroller that connect successively; Described audio input circuit, for sampled audio signal, is converted to acoustical signal the signal of telecommunication and exports the first discharge circuit to; Described the first discharge circuit, for amplifying the signal of telecommunication after conversion export the second discharge circuit to; Described the second discharge circuit, for realizing the filtering to the signal of telecommunication after amplifying and exporting N passage frequency selection circuit to; Described N passage frequency selection circuit, for realizing the selection to signal of telecommunication frequency after filtering; Described microcontroller, for sampling and processing described N passage frequency selection circuit output signal, completes the FSK demodulation to this output signal, pays to realize sound wave; Wherein, N is more than or equal to 2 natural number.
2. the sound wave payment circuit that is applied to POS end according to claim 1, is characterized in that: described the first discharge circuit adoption rate amplifying circuit.
3. the sound wave payment circuit that is applied to POS end according to claim 1, is characterized in that: described the second discharge circuit adopts bandpass filter.
4. the sound wave payment circuit that is applied to POS end according to claim 1, is characterized in that: described audio input circuit comprises the first to second resistance, the first to the 3rd electric capacity and the first connector; Described the first connector is connected to MIC, for gathering audio signal; Described first, second resistance and the first electric capacity form the biasing circuit of MIC; Described the 3rd electric capacity is connected between MIC output and ground, for filtering; Described the second electric capacity is connected to MIC output and described the first discharge circuit input, for AC coupled.
5. the sound wave payment circuit that is applied to POS end according to claim 4, is characterized in that: described the first discharge circuit comprises the 3rd to the 6th resistance, the 4th to the 5th electric capacity and the first amplifier; Described the 3rd resistance and the 4th resistance form input biasing; Described the 5th, the 6th resistance, the 4th, the 5th electric capacity composition are amplified and feedback; The output of described the first amplifier is connected to the input of described the second discharge circuit.
6. the sound wave payment circuit that is applied to POS end according to claim 5, it is characterized in that: described the second discharge circuit comprises the first four-way integrated transporting discharging, the 7th to the 17 resistance and the 6th to the 13 electric capacity, described the first four-way integrated transporting discharging comprises the second to the 5th amplifier; Described the 7th, the 8th resistance, the 6th, the 7th electric capacity and described the second amplifier form reference voltage generating circuit; Described the 9th to the 17 resistance, the 8th to the 13 electric capacity and described the 3rd to the 5th amplifier form three rank filter circuits.
7. the sound wave payment circuit that is applied to POS end according to claim 6, is characterized in that: described N is 2, and described N passage frequency selection circuit comprises frequency selection circuit one and frequency selection circuit two; Described frequency selection circuit one is made up of the first fsk demodulator, the 18 to 20 resistance and the 14 to the 19 electric capacity; Described frequency selection circuit two is made up of the second fsk demodulator, the 21 to 23 resistance and the 20 to the 25 electric capacity.
8. according to the sound wave payment circuit that is applied to POS end described in claim 1 to 7 any one, it is characterized in that: described microcontroller is made up of the first microcontroller, the 24 to 27 resistance, for gathering and process output signal frequency for described N passage frequency selection circuit output signal, determine the information of carrying in sound wave, and then complete sound wave payment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521023705.1U CN205247447U (en) | 2015-12-11 | 2015-12-11 | Be applied to sound wave payment circuit of POS end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521023705.1U CN205247447U (en) | 2015-12-11 | 2015-12-11 | Be applied to sound wave payment circuit of POS end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205247447U true CN205247447U (en) | 2016-05-18 |
Family
ID=55946529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521023705.1U Active CN205247447U (en) | 2015-12-11 | 2015-12-11 | Be applied to sound wave payment circuit of POS end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205247447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405006A (en) * | 2015-12-11 | 2016-03-16 | 福建新大陆支付技术有限公司 | Acoustic wave payment circuit and acoustic wave payment method applied to POS terminal |
-
2015
- 2015-12-11 CN CN201521023705.1U patent/CN205247447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405006A (en) * | 2015-12-11 | 2016-03-16 | 福建新大陆支付技术有限公司 | Acoustic wave payment circuit and acoustic wave payment method applied to POS terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104602162A (en) | External noise reduction device for mobile terminal and noise reduction method of external noise reduction device | |
| CN104299622A (en) | Audio processing method | |
| CN205247447U (en) | Be applied to sound wave payment circuit of POS end | |
| CN102262794A (en) | Intelligent magnetic sensor module for detection of paper money | |
| CN204758709U (en) | Multiplex's electric energy information acquisition device | |
| CN104079420A (en) | Information processing method and electronic device | |
| CN205982669U (en) | Multi -frequency metallic foreign object detects quick -witted signal reception circuit module | |
| CN204633997U (en) | A kind of induction of the multiband high sensitivity brain wave based on NFC bluetooth earphone | |
| CN105405006A (en) | Acoustic wave payment circuit and acoustic wave payment method applied to POS terminal | |
| CN204578743U (en) | A kind of multiband high sensitivity brain wave induction bluetooth earphone | |
| CN204721568U (en) | The bluetooth earphone of the portable wear-type brain wave induction of a kind of touch-control | |
| CN204578742U (en) | A kind of multi-way detecting brain wave bluetooth earphone | |
| CN204633999U (en) | A kind of multi-way detecting brain wave bluetooth earphone based on NFC | |
| CN106470022A (en) | A kind of filter circuit and method | |
| CN204598275U (en) | A kind of bluetooth earphone of portable wear-type eeg signal | |
| CN204633993U (en) | A kind of induction of the brain wave based on NFC bluetooth earphone | |
| CN104936060A (en) | Brain beta wave signal induction bluetooth earphone based on NFC | |
| CN104902395A (en) | Touch control type high-sensitivity brain wave induction Bluetooth headset | |
| CN104869494A (en) | NFC-based portable high-sensitivity brain wave induction bluetooth earphone | |
| CN204633988U (en) | A kind of brain wave induction bluetooth earphone | |
| CN204633992U (en) | A kind of electricity of the brain based on NFC β ripple induction of signal bluetooth earphone | |
| CN204721571U (en) | A kind of touch multi-way detecting brain wave bluetooth earphone | |
| CN204578746U (en) | A kind of brain electricity β ripple induction of signal bluetooth earphone | |
| CN204598274U (en) | A kind of portable brain electric wave induction bluetooth earphone | |
| CN104579194A (en) | High-gain computer network signal amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |