CN203504551U - Supersonic wave receiving circuit used for payment terminal equipment - Google Patents
Supersonic wave receiving circuit used for payment terminal equipment Download PDFInfo
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- CN203504551U CN203504551U CN201320681353.3U CN201320681353U CN203504551U CN 203504551 U CN203504551 U CN 203504551U CN 201320681353 U CN201320681353 U CN 201320681353U CN 203504551 U CN203504551 U CN 203504551U
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- resistance
- operational amplifier
- integrated operational
- resistor
- electric capacity
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
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Abstract
The utility model discloses a supersonic wave receiving circuit used for payment terminal equipment, which comprises a potentiometer, a supersonic wave receiver, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first integrated operational amplifier, a second integrated operational amplifier, a third integrated operational amplifier, a light emitting diode, a first capacitance, a second capacitance, a third capacitance and a diode, a power source voltage terminal is connected to an anode power supply of the first integrated operational amplifier, a first terminal of the potentiometer, a first terminal of the third resistor and a first terminal of the sixth resistor. The utility model is the supersonic wave receiving circuit used for the payment terminal equipment, a filter circuit composed of a first capacitance C1 and a fifth resistor R5 of the circuit can filter the noise, so that the anti-interference capability of the payment terminal equipment is strong.
Description
Technical field
The utility model relates to a kind of ultrasonic wave receiving circuit, relates in particular to a kind of for being subject to pay the ultrasonic wave receiving circuit of terminal equipment.
Background technology
Conventionally be arranged on by pair terminal equipment and can utilize communications facility to connect the place that facilitates of work with distant place computer.Be subject to the medium of paying terminal equipment to comprise ultrasonic wave, pair terminal equipment that is subject to that the ultrasonic wave of take is medium is equipped with ultrasonic receiver.There is the low and high shortcoming that consumes energy of antijamming capability sensitivity low, that receive signal in traditional ultrasonic wave receiving circuit, the ultrasonic signal that receives and change through conventional ultrasonic wave receiving circuit can not convert the broad pulse control signal of the more occasions of adaptation to.
Utility model content
The purpose of this utility model provides a kind of for being subject to pay the ultrasonic wave receiving circuit of terminal equipment with regard to being in order to address the above problem.
In order to achieve the above object, the utility model has adopted following technical scheme:
For being subject to pay a ultrasonic wave receiving circuit for terminal equipment, comprise potentiometer, ultrasonic receiver, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the first integrated operational amplifier, the second integrated operational amplifier, the 3rd integrated operational amplifier, light-emitting diode, the first electric capacity, the second electric capacity, the 3rd electric capacity and diode, supply voltage input respectively with the cathode power supply end of described the first integrated operational amplifier, the first end of described potentiometer, the first end of described the 3rd resistance is connected with the first end of described the 6th resistance, the output of described the first integrated operational amplifier is connected with signal output part with the first end of described the first resistance respectively, the second end of described the first resistance is connected with the positive pole of described light-emitting diode, the negative pole of described light-emitting diode respectively with the negative electricity source of described the first integrated operational amplifier, the first end of described the second resistance, the first end of described ultrasonic receiver, the first end of described the 4th resistance, the first end of described the 7th resistance, ground connection after the first end of the first end of described the second electric capacity and described the 3rd electric capacity is connected, the inverting input of described the first integrated operational amplifier respectively with the second end of described the 3rd resistance, the first end of described the 5th resistance is connected with the first end of described the first electric capacity, and the second end of described the first electric capacity is connected with the second end of described the 4th resistance, the in-phase input end of described the first integrated operational amplifier respectively with the second end of described potentiometer, the second end of the sliding end of described potentiometer and described the second resistance is connected, the second end of described the 5th resistance is connected with the positive pole of described diode, the negative pole of described diode is connected with the first end of described the 8th resistance with the output of described the second integrated operational amplifier respectively, the second end of described the 8th resistance is connected with the first end of described the 9th resistance with the inverting input of described the second integrated operational amplifier respectively, the second end of described the 9th resistance is connected with the second end of described the second electric capacity, the in-phase input end of described the second integrated operational amplifier is connected with the output of described the 3rd integrated operational amplifier with the first end of described the 11 resistance respectively, the second end of described the 3rd electric capacity is connected with the first end of described the tenth resistance, the second end of described the tenth resistance is connected with the inverting input of described the 3rd integrated operational amplifier with the second end of described the 11 resistance respectively, the in-phase input end of described the 3rd integrated operational amplifier respectively with the second end of described the 7th resistance, the second end of described the 6th resistance and the second end of described ultrasonic receiver are connected.
The beneficial effects of the utility model are:
The utility model is a kind of for being subject to pay the ultrasonic wave receiving circuit of terminal equipment, the filter circuit that the first electric capacity of this circuit and the 5th resistance form can filter noise, make to be subject to the antijamming capability of pair terminal equipment strong, the two poles of the earth high-gain amplifier that the 3rd integrated operational amplifier of this circuit and the second integrated operational amplifier form can increase the sensitivity that is subject to pay terminal equipment reception signal, and the comparator that the 3rd integrated operational amplifier and the first resistance form can convert signal to the broad pulse control signal of the more occasions of adaptation.
Accompanying drawing explanation
Fig. 1 is that the utility model is a kind of for being subject to the circuit diagram of the ultrasonic wave receiving circuit of pair terminal equipment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of for being subject to pay the ultrasonic wave receiving circuit of terminal equipment, comprises potentiometer RP, ultrasonic receiver HTD, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the first integrated operational amplifier IC1, the second integrated operational amplifier IC2, the 3rd integrated operational amplifier IC3, LED, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3 and diode D, supply voltage input respectively with the cathode power supply end of the first integrated operational amplifier IC1, the first end of potentiometer RP, the first end of the 3rd resistance R 3 is connected with the first end of the 6th resistance R 6, the output of the first integrated operational amplifier IC1 is connected with signal output part with the first end of the first resistance R 1 respectively, the second end of the first resistance R 1 is connected with the positive pole of LED, the negative pole of LED respectively with the negative electricity source of the first integrated operational amplifier IC1, the first end of the second resistance R 2, the first end of ultrasonic receiver HTD, the first end of the 4th resistance R 4, the first end of the 7th resistance R 7, ground connection after the first end of the first end of the second capacitor C 2 and the 3rd capacitor C 3 is connected, the inverting input of the first integrated operational amplifier IC1 respectively with the second end of the 3rd resistance R 3, the first end of the 5th resistance R 5 is connected with the first end of the first capacitor C 1, and the second end of the first capacitor C 1 is connected with the second end of the 4th resistance R 4, the in-phase input end of the first integrated operational amplifier IC1 respectively with the second end of potentiometer RP, the sliding end of potentiometer RP is connected with the second end of the second resistance R 2, the second end of the 5th resistance R 5 is connected with the positive pole of diode D, the negative pole of diode D is connected with the first end of the 8th resistance R 8 with the output of the second integrated operational amplifier IC2 respectively, the second end of the 8th resistance R 8 is connected with the first end of the 9th resistance R 9 with the inverting input of the second integrated operational amplifier IC2 respectively, the second end of the 9th resistance R 9 is connected with the second end of the second capacitor C 2, the in-phase input end of the second integrated operational amplifier IC2 is connected with the output of the 3rd integrated operational amplifier IC3 with the first end of the 11 resistance R 11 respectively, the second end of the 3rd capacitor C 3 is connected with the first end of the tenth resistance R 10, the second end of the tenth resistance R 10 is connected with the inverting input of the 3rd integrated operational amplifier IC3 with the second end of the 11 resistance R 11 respectively, the in-phase input end of the 3rd integrated operational amplifier IC3 respectively with the second end of the 7th resistance R 7, the second end of the 6th resistance R 6 is connected with the second end of ultrasonic receiver HTD.
Operation principle of the present utility model is as follows:
By ultrasonic receiver HTD, receive signal, signal first amplifies through the two poles of the earth high-gain amplifier of the 3rd integrated operational amplifier IC3 and the second integrated operational amplifier IC2 composition, again after diode D detection, enter the filter circuit being formed by the first capacitor C 1 and the 5th resistance R 5 and filter noise, filter signal after noise and enter the comparator that the 3rd integrated operational amplifier IC3 and the first resistance R 1 form, comparator is exported after will signal shaping becoming very regular start pulse signal.
Claims (1)
1. for being subject to pay a ultrasonic wave receiving circuit for terminal equipment, it is characterized in that: comprise potentiometer, ultrasonic receiver, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11 resistance, the first integrated operational amplifier, the second integrated operational amplifier, the 3rd integrated operational amplifier, light-emitting diode, the first electric capacity, the second electric capacity, the 3rd electric capacity and diode, supply voltage input respectively with the cathode power supply end of described the first integrated operational amplifier, the first end of described potentiometer, the first end of described the 3rd resistance is connected with the first end of described the 6th resistance, the output of described the first integrated operational amplifier is connected with signal output part with the first end of described the first resistance respectively, the second end of described the first resistance is connected with the positive pole of described light-emitting diode, the negative pole of described light-emitting diode respectively with the negative electricity source of described the first integrated operational amplifier, the first end of described the second resistance, the first end of described ultrasonic receiver, the first end of described the 4th resistance, the first end of described the 7th resistance, ground connection after the first end of the first end of described the second electric capacity and described the 3rd electric capacity is connected, the inverting input of described the first integrated operational amplifier respectively with the second end of described the 3rd resistance, the first end of described the 5th resistance is connected with the first end of described the first electric capacity, and the second end of described the first electric capacity is connected with the second end of described the 4th resistance, the in-phase input end of described the first integrated operational amplifier respectively with the second end of described potentiometer, the second end of the sliding end of described potentiometer and described the second resistance is connected, the second end of described the 5th resistance is connected with the positive pole of described diode, the negative pole of described diode is connected with the first end of described the 8th resistance with the output of described the second integrated operational amplifier respectively, the second end of described the 8th resistance is connected with the first end of described the 9th resistance with the inverting input of described the second integrated operational amplifier respectively, the second end of described the 9th resistance is connected with the second end of described the second electric capacity, the in-phase input end of described the second integrated operational amplifier is connected with the output of described the 3rd integrated operational amplifier with the first end of described the 11 resistance respectively, the second end of described the 3rd electric capacity is connected with the first end of described the tenth resistance, the second end of described the tenth resistance is connected with the inverting input of described the 3rd integrated operational amplifier with the second end of described the 11 resistance respectively, the in-phase input end of described the 3rd integrated operational amplifier respectively with the second end of described the 7th resistance, the second end of described the 6th resistance and the second end of described ultrasonic receiver are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681353.3U CN203504551U (en) | 2013-10-31 | 2013-10-31 | Supersonic wave receiving circuit used for payment terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681353.3U CN203504551U (en) | 2013-10-31 | 2013-10-31 | Supersonic wave receiving circuit used for payment terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504551U true CN203504551U (en) | 2014-03-26 |
Family
ID=50335490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320681353.3U Expired - Fee Related CN203504551U (en) | 2013-10-31 | 2013-10-31 | Supersonic wave receiving circuit used for payment terminal equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504551U (en) |
-
2013
- 2013-10-31 CN CN201320681353.3U patent/CN203504551U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141031 |
|
| EXPY | Termination of patent right or utility model |