CN104601183A - Ultrasonic receiver circuit for near-field communication - Google Patents
Ultrasonic receiver circuit for near-field communication Download PDFInfo
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- CN104601183A CN104601183A CN201310525164.1A CN201310525164A CN104601183A CN 104601183 A CN104601183 A CN 104601183A CN 201310525164 A CN201310525164 A CN 201310525164A CN 104601183 A CN104601183 A CN 104601183A
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Abstract
The invention discloses an ultrasonic receiver circuit for near-field communication. The ultrasonic receiver circuit comprises a relay, first to third diodes, a transistor, first to sixteenth resistors, first to eighth capacitors, a potentiometer, a signal receiver and an integrated circuit, wherein a supply voltage input end is connected with the first end of the relay, the cathode of the first diode, the first end of the first resistor, the first end of the second resistor, the sixth pin of the integrated circuit, the first end of the eleventh resistor and the first end of the fifteenth resistor. In the ultrasonic receiver circuit for near-field communication, the signal receiver with high receiving sensitivity is adopted as an ultrasonic receiver, and the integrated circuit of which the amplification factor can be up to about 1,000 is also adopted, so that the problem that the signal amplification factor cannot meet a use demand is solved. The ultrasonic receiver further has the advantages of simple structure and low energy consumption.
Description
Technical field
The present invention relates to a kind of ultrasonic wave receiving circuit, particularly relate to a kind of ultrasonic receiver circuit paid near field.
Background technology
Near field pays and refers to that consumer is when buying commodity or service, and IMU is crossed mobile phone and paid to businessman, and the process of payment is carried out at the scene, and online under carry out, do not need to use mobile network.The medium of near-field payment system comprises ultrasonic wave, and be that the near-field payment system of medium is provided with ultrasonic receiver with ultrasonic wave, the signal received can be converted to certain output signal by ultrasonic receiver.Adopt the near-field payment system of conventional ultrasonic wave receiver, the sensitivity of received ultrasonic signal is not high, and the multiple that signal amplifies does not reach user demand, and complex structure, power consumption are high.
Summary of the invention
Object of the present invention is just to provide a kind of ultrasonic receiver circuit paid near field to solve the problem.
In order to achieve the above object, present invention employs following technical scheme:
A kind of ultrasonic receiver circuit paid near field, comprise relay, first diode is to the 3rd diode, transistor, first resistance is to the 16 resistance, first electric capacity is to the 8th electric capacity, potentiometer, signal receiver and integrated circuit, power voltage input terminal respectively with the first end of described relay, the negative pole of described first diode, the first end of described first resistance, the first end of described second resistance, 6th pin of described integrated circuit, the first end of described 11 resistance is connected with the first end of described 15 resistance, second end of described first resistance is connected with the first end of described first electric capacity, second end ground connection of described first electric capacity, second end of described second resistance is connected with the first end of described second electric capacity, second end ground connection of described second electric capacity, second end of described relay is connected with the positive pole of described first diode and the drain electrode of described transistor respectively, 3rd end of described relay is connected with load end, the source electrode of described transistor respectively with the first end of described 4th resistance, the first end of described 3rd electric capacity, the positive pole of described 3rd diode, the first end of described 6th electric capacity, the first end of described signal receiver is connected rear ground connection with the first end of described 16 resistance, the grid of described transistor is connected with the second end of described 4th resistance and the first end of described 3rd resistance respectively, second end of described 3rd resistance is connected with the first end of described 5th resistance and the negative pole of described second diode respectively, second end of described 5th resistance is connected with the second end of described 3rd electric capacity, the positive pole of described second diode is connected with the negative pole of described 3rd diode and the first end of described 4th electric capacity respectively, second end of described 4th electric capacity is connected with the 5th pin of described integrated circuit and the first end of described 8th resistance respectively, second end of described 8th resistance is connected with the 7th pin of described integrated circuit and the first end of described 9th resistance respectively, second end of described 9th resistance is connected with the first end of described 7th electric capacity, second end ground connection of described 7th electric capacity, second end of described 15 resistance is connected with the second end of described 16 resistance and the first end of described 14 resistance respectively, second end of described 14 resistance is connected with the second end of described signal receiver and the first pin of described integrated circuit respectively, second pin of described integrated circuit is connected with the first end of described 7th resistance and the first end of described tenth resistance respectively, second end of described tenth resistance is connected with the second end of described 6th electric capacity, 3rd pin ground connection of described integrated circuit, second end of described 7th resistance is connected with the first end of described potentiometer, second end of described potentiometer respectively with the sliding end of described potentiometer, 4th pin of described integrated circuit is connected with the first end of described 5th electric capacity, second end of described 5th electric capacity is connected with the first end of described 6th resistance, second end of described 6th resistance is connected with the 8th pin of described integrated circuit and the first end of described 12 resistance respectively, second end of described 12 resistance respectively with the second end of described 11 resistance, the first end of described 13 resistance is connected with the first end of described 8th electric capacity, second end ground connection of described 13 resistance, second end ground connection of described 8th electric capacity.
Beneficial effect of the present invention is:
The present invention is a kind of ultrasonic receiver circuit paid near field, this ultrasonic receiver adopts the signal receiver with high receiving sensitivity, also adopt multiplication factor can reach the integrated circuit of about 1,000 times, solve the problem that signal amplification factor does not reach user demand, this ultrasonic receiver also has the advantage that structure is simple and power consumption is low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of ultrasonic receiver circuit near field payment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of ultrasonic receiver circuit paid near field of the present invention, comprise relay K, first diode D1 is to the 3rd diode D3, transistor Y, first resistance R1 is to the 16 resistance R16, first electric capacity C1 is to the 8th electric capacity C8, potentiometer RP, signal receiver HTD and integrated circuit (IC), power voltage input terminal respectively with the first end of relay K, the negative pole of the first diode D1, the first end of the first resistance R1, the first end of the second resistance R2, 6th pin of integrated circuit (IC), the first end of the 11 resistance R11 is connected with the first end of the 15 resistance R15, second end of the first resistance R1 is connected with the first end of the first electric capacity C1, the second end ground connection of the first electric capacity C1, second end of the second resistance R2 is connected with the first end of the second electric capacity C2, the second end ground connection of the second electric capacity C2, second end of relay K is connected with the positive pole of the first diode D1 and the drain electrode of transistor Y respectively, 3rd end of relay K is connected with load end, the source electrode of transistor Y respectively with the first end of the 4th resistance R4, the first end of the 3rd electric capacity C3, the positive pole of the 3rd diode D3, the first end of the 6th electric capacity C6, the first end of signal receiver HTD is connected rear ground connection with the first end of the 16 resistance R16, the grid of transistor Y is connected with second end of the 4th resistance R4 and the first end of the 3rd resistance R3 respectively, second end of the 3rd resistance R3 is connected with the first end of the 5th resistance R5 and the negative pole of the second diode D2 respectively, second end of the 5th resistance R5 is connected with second end of the 3rd electric capacity C3, the positive pole of the second diode D2 is connected with the negative pole of the 3rd diode D3 and the first end of the 4th electric capacity C4 respectively, second end of the 4th electric capacity C4 is connected with the 5th pin of integrated circuit (IC) and the first end of the 8th resistance R8 respectively, second end of the 8th resistance R8 is connected with the 7th pin of integrated circuit (IC) and the first end of the 9th resistance R9 respectively, second end of the 9th resistance R9 is connected with the first end of the 7th electric capacity C7, the second end ground connection of the 7th electric capacity C7, second end of the 15 resistance R15 is connected with second end of the 16 resistance R16 and the first end of the 14 resistance R14 respectively, second end of the 14 resistance R14 is connected with second end of signal receiver HTD and the first pin of integrated circuit (IC) respectively, second pin of integrated circuit (IC) is connected with the first end of the 7th resistance R7 and the first end of the tenth resistance R10 respectively, second end of the tenth resistance R10 is connected with second end of the 6th electric capacity C6, 3rd pin ground connection of integrated circuit (IC), second end of the 7th resistance R7 is connected with the first end of potentiometer RP, second end of potentiometer RP respectively with the sliding end of potentiometer RP, 4th pin of integrated circuit (IC) is connected with the first end of the 5th electric capacity C5, second end of the 5th electric capacity C5 is connected with the first end of the 6th resistance R6, second end of the 6th resistance R6 is connected with the 8th pin of integrated circuit (IC) and the first end of the 12 resistance R12 respectively, second end of the 12 resistance R12 respectively with second end of the 11 resistance R11, the first end of the 13 resistance R13 is connected with the first end of the 8th electric capacity C8, the second end ground connection of the 13 resistance R13, the second end ground connection of the 8th electric capacity C8.
Operation principle of the present invention is as follows:
The model of integrated circuit (IC) of the present invention is NE542V, the signal received from signal receiver HTD is after integrated circuit (IC) is amplified, be transferred to by relay K in the load be connected with relay K, current commutates is become direct current with the second diode D2 by the first diode D1, transistor Y output current can drive very large load, and transistor Y is used for control relay K.
Claims (1)
1. the ultrasonic receiver circuit paid near field, it is characterized in that: comprise relay, first diode is to the 3rd diode, transistor, first resistance is to the 16 resistance, first electric capacity is to the 8th electric capacity, potentiometer, signal receiver and integrated circuit, power voltage input terminal respectively with the first end of described relay, the negative pole of described first diode, the first end of described first resistance, the first end of described second resistance, 6th pin of described integrated circuit, the first end of described 11 resistance is connected with the first end of described 15 resistance, second end of described first resistance is connected with the first end of described first electric capacity, second end ground connection of described first electric capacity, second end of described second resistance is connected with the first end of described second electric capacity, second end ground connection of described second electric capacity, second end of described relay is connected with the positive pole of described first diode and the drain electrode of described transistor respectively, 3rd end of described relay is connected with load end, the source electrode of described transistor respectively with the first end of described 4th resistance, the first end of described 3rd electric capacity, the positive pole of described 3rd diode, the first end of described 6th electric capacity, the first end of described signal receiver is connected rear ground connection with the first end of described 16 resistance, the grid of described transistor is connected with the second end of described 4th resistance and the first end of described 3rd resistance respectively, second end of described 3rd resistance is connected with the first end of described 5th resistance and the negative pole of described second diode respectively, second end of described 5th resistance is connected with the second end of described 3rd electric capacity, the positive pole of described second diode is connected with the negative pole of described 3rd diode and the first end of described 4th electric capacity respectively, second end of described 4th electric capacity is connected with the 5th pin of described integrated circuit and the first end of described 8th resistance respectively, second end of described 8th resistance is connected with the 7th pin of described integrated circuit and the first end of described 9th resistance respectively, second end of described 9th resistance is connected with the first end of described 7th electric capacity, second end ground connection of described 7th electric capacity, second end of described 15 resistance is connected with the second end of described 16 resistance and the first end of described 14 resistance respectively, second end of described 14 resistance is connected with the second end of described signal receiver and the first pin of described integrated circuit respectively, second pin of described integrated circuit is connected with the first end of described 7th resistance and the first end of described tenth resistance respectively, second end of described tenth resistance is connected with the second end of described 6th electric capacity, 3rd pin ground connection of described integrated circuit, second end of described 7th resistance is connected with the first end of described potentiometer, second end of described potentiometer respectively with the sliding end of described potentiometer, 4th pin of described integrated circuit is connected with the first end of described 5th electric capacity, second end of described 5th electric capacity is connected with the first end of described 6th resistance, second end of described 6th resistance is connected with the 8th pin of described integrated circuit and the first end of described 12 resistance respectively, second end of described 12 resistance respectively with the second end of described 11 resistance, the first end of described 13 resistance is connected with the first end of described 8th electric capacity, second end ground connection of described 13 resistance, second end ground connection of described 8th electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525164.1A CN104601183A (en) | 2013-10-30 | 2013-10-30 | Ultrasonic receiver circuit for near-field communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525164.1A CN104601183A (en) | 2013-10-30 | 2013-10-30 | Ultrasonic receiver circuit for near-field communication |
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| Publication Number | Publication Date |
|---|---|
| CN104601183A true CN104601183A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310525164.1A Pending CN104601183A (en) | 2013-10-30 | 2013-10-30 | Ultrasonic receiver circuit for near-field communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106562789A (en) * | 2016-10-09 | 2017-04-19 | 深圳市安思科电子科技有限公司 | Loading or hauling device used for magnetic resonance imaging |
-
2013
- 2013-10-30 CN CN201310525164.1A patent/CN104601183A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106562789A (en) * | 2016-10-09 | 2017-04-19 | 深圳市安思科电子科技有限公司 | Loading or hauling device used for magnetic resonance imaging |
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Application publication date: 20150506 |