CN104601184A - Ultrasonic receiving circuit for acceptance terminal equipment - Google Patents
Ultrasonic receiving circuit for acceptance terminal equipment Download PDFInfo
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- CN104601184A CN104601184A CN201310529092.8A CN201310529092A CN104601184A CN 104601184 A CN104601184 A CN 104601184A CN 201310529092 A CN201310529092 A CN 201310529092A CN 104601184 A CN104601184 A CN 104601184A
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- resistance
- operational amplifier
- integrated operational
- electric capacity
- resistor
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Abstract
The invention discloses an ultrasonic receiving circuit for acceptance terminal equipment. The ultrasonic receiving circuit comprises a potentiometer, an ultrasonic receiver, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eight 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 capacitor, a second capacitor, a third capacitor and a diode. The input end of a supply voltage is connected with an anode power supply end of the first integrated operational amplifier, a first end of the potentiometer, a first end of the third resistor and a first end of the sixth resistor. In the ultrasonic receiving circuit, a filter circuit comprising the first capacitor C1 and the fifth resistor R5 can filter the noise, so that the acceptance terminal equipment has strong anti-interference performance.
Description
Technical field
The present invention relates to a kind of ultrasonic wave receiving circuit, particularly relate to a kind of for the ultrasonic wave receiving circuit by pair terminal equipment.
Background technology
By pay terminal equipment be usually arranged on communications facility can be utilized with remote computers to connect work facilitate place.Comprising ultrasonic wave by the medium paying terminal equipment, is that pair terminal equipment that is subject to of medium is equipped with ultrasonic receiver with ultrasonic wave.Traditional ultrasonic wave receiving circuit exists that antijamming capability is low, the sensitivity of Received signal strength is low and the high shortcoming that consumes energy, and receives and the ultrasonic signal changed, can not convert the broad pulse control signal of the more occasions of adaptation to through conventional ultrasonic wave receiving circuit.
Summary of the invention
Object of the present invention is just to provide a kind of for the ultrasonic wave receiving circuit by pair terminal equipment to solve the problem.
In order to achieve the above object, present invention employs following technical scheme:
For by the ultrasonic wave receiving circuit paying terminal equipment, comprise potentiometer, ultrasonic receiver, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, first integrated operational amplifier, second integrated operational amplifier, 3rd integrated operational amplifier, Light-Emitting Diode, first electric capacity, second electric capacity, 3rd electric capacity and diode, power voltage input terminal respectively with the cathode power supply end of described first integrated operational amplifier, the first end of described potentiometer, the first end of described 3rd resistance is connected with the first end of described 6th resistance, the output of described first integrated operational amplifier is connected with the first end of described first resistance and signal output part respectively, second end of described 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 first integrated operational amplifier, the first end of described second resistance, the first end of described ultrasonic receiver, the first end of described 4th resistance, the first end of described 7th resistance, ground connection after the first end of described second electric capacity is connected with the first end of described 3rd electric capacity, the inverting input of described first integrated operational amplifier respectively with the second end of described 3rd resistance, the first end of described 5th resistance is connected with the first end of described first electric capacity, and the second end of described first electric capacity is connected with the second end of described 4th resistance, the in-phase input end of described first integrated operational amplifier respectively with the second end of described potentiometer, the sliding end of described potentiometer is connected with the second end of described second resistance, second end of described 5th resistance is connected with the positive pole of described diode, the negative pole of described diode is connected with the output of described second integrated operational amplifier and the first end of described 8th resistance respectively, second end of described 8th resistance is connected with the inverting input of described second integrated operational amplifier and the first end of described 9th resistance respectively, second end of described 9th resistance is connected with the second end of described second electric capacity, the in-phase input end of described second integrated operational amplifier is connected with the first end of described 11 resistance and the output of described 3rd integrated operational amplifier respectively, second end of described 3rd electric capacity is connected with the first end of described tenth resistance, second end of described tenth resistance is connected with the second end of described 11 resistance and the inverting input of described 3rd integrated operational amplifier respectively, the in-phase input end of described 3rd integrated operational amplifier respectively with the second end of described 7th resistance, described second end of the 6th resistance is connected with the second end of described ultrasonic receiver.
Beneficial effect of the present invention is:
The present invention is a kind of for the ultrasonic wave receiving circuit by pair terminal equipment, the filter circuit of the first electric capacity of this circuit and the 5th resistance composition can filter noise, make the antijamming capability by paying terminal equipment strong, the two poles of the earth high-gain amplifier of the 3rd integrated operational amplifier of this circuit and the second integrated operational amplifier composition can increase the sensitivity by paying terminal equipment Received signal strength, and the comparator of the 3rd integrated operational amplifier and the first resistance composition can convert the signal into the broad pulse control signal of the more occasions of adaptation.
Accompanying drawing explanation
Fig. 1 is a kind of circuit diagram for the ultrasonic wave receiving circuit by pair terminal equipment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the present invention is a kind of for by the ultrasonic wave receiving circuit paying terminal equipment, comprises potentiometer RP, ultrasonic receiver HTD, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, 5th resistance R5, 6th resistance R6, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 11 resistance R11, first integrated operational amplifier IC1, second integrated operational amplifier IC2, 3rd integrated operational amplifier IC3, Light-Emitting Diode LED, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3 and diode D, power voltage input terminal 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 R3 is connected with the first end of the 6th resistance R6, the output of the first integrated operational amplifier IC1 is connected with the first end of the first resistance R1 and signal output part respectively, second end of the first resistance R1 is connected with the positive pole of Light-Emitting Diode LED, the negative pole of Light-Emitting Diode LED respectively with the negative electricity source of the first integrated operational amplifier IC1, the first end of the second resistance R2, the first end of ultrasonic receiver HTD, the first end of the 4th resistance R4, the first end of the 7th resistance R7, ground connection after the first end of the second electric capacity C2 is connected with the first end of the 3rd electric capacity C3, the inverting input of the first integrated operational amplifier IC1 respectively with second end of the 3rd resistance R3, the first end of the 5th resistance R5 is connected with the first end of the first electric capacity C1, and second end of the first electric capacity C1 is connected with second end of the 4th resistance R4, the in-phase input end of the first integrated operational amplifier IC1 respectively with second end of potentiometer RP, the sliding end of potentiometer RP is connected with second end of the second resistance R2, second end of the 5th resistance R5 is connected with the positive pole of diode D, the negative pole of diode D is connected with the output of the second integrated operational amplifier IC2 and the first end of the 8th resistance R8 respectively, second end of the 8th resistance R8 is connected with the inverting input of the second integrated operational amplifier IC2 and the first end of the 9th resistance R9 respectively, second end of the 9th resistance R9 is connected with second end of the second electric capacity C2, the in-phase input end of the second integrated operational amplifier IC2 is connected with the first end of the 11 resistance R11 and the output of the 3rd integrated operational amplifier IC3 respectively, second end of the 3rd electric capacity C3 is connected with the first end of the tenth resistance R10, second end of the tenth resistance R10 is connected with second end of the 11 resistance R11 and the inverting input of the 3rd integrated operational amplifier IC3 respectively, the in-phase input end of the 3rd integrated operational amplifier IC3 respectively with second end of the 7th resistance R7, second end of the 6th resistance R6 is connected with second end of ultrasonic receiver HTD.
Operation principle of the present invention is as follows:
By ultrasonic receiver HTD Received signal strength, signal first amplifies through the two poles of the earth high-gain amplifier that the 3rd integrated operational amplifier IC3 and the second integrated operational amplifier IC2 forms, again after diode D detection, enter the filter circuit be made up of the first electric capacity C1 and the 5th resistance R5 and filter noise, filter the comparator that the signal after noise enters the 3rd integrated operational amplifier IC3 and the first resistance R1 composition, comparator exports after start pulse signal very regular for signal shaping one-tenth.
Claims (1)
1., for by the ultrasonic wave receiving circuit paying terminal equipment, it is characterized in that: comprise potentiometer, ultrasonic receiver, first resistance, second resistance, 3rd resistance, 4th resistance, 5th resistance, 6th resistance, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 11 resistance, first integrated operational amplifier, second integrated operational amplifier, 3rd integrated operational amplifier, Light-Emitting Diode, first electric capacity, second electric capacity, 3rd electric capacity and diode, power voltage input terminal respectively with the cathode power supply end of described first integrated operational amplifier, the first end of described potentiometer, the first end of described 3rd resistance is connected with the first end of described 6th resistance, the output of described first integrated operational amplifier is connected with the first end of described first resistance and signal output part respectively, second end of described 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 first integrated operational amplifier, the first end of described second resistance, the first end of described ultrasonic receiver, the first end of described 4th resistance, the first end of described 7th resistance, ground connection after the first end of described second electric capacity is connected with the first end of described 3rd electric capacity, the inverting input of described first integrated operational amplifier respectively with the second end of described 3rd resistance, the first end of described 5th resistance is connected with the first end of described first electric capacity, and the second end of described first electric capacity is connected with the second end of described 4th resistance, the in-phase input end of described first integrated operational amplifier respectively with the second end of described potentiometer, the sliding end of described potentiometer is connected with the second end of described second resistance, second end of described 5th resistance is connected with the positive pole of described diode, the negative pole of described diode is connected with the output of described second integrated operational amplifier and the first end of described 8th resistance respectively, second end of described 8th resistance is connected with the inverting input of described second integrated operational amplifier and the first end of described 9th resistance respectively, second end of described 9th resistance is connected with the second end of described second electric capacity, the in-phase input end of described second integrated operational amplifier is connected with the first end of described 11 resistance and the output of described 3rd integrated operational amplifier respectively, second end of described 3rd electric capacity is connected with the first end of described tenth resistance, second end of described tenth resistance is connected with the second end of described 11 resistance and the inverting input of described 3rd integrated operational amplifier respectively, the in-phase input end of described 3rd integrated operational amplifier respectively with the second end of described 7th resistance, described second end of the 6th resistance is connected with the second end of described ultrasonic receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310529092.8A CN104601184A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic receiving circuit for acceptance terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310529092.8A CN104601184A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic receiving circuit for acceptance terminal equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104601184A true CN104601184A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310529092.8A Pending CN104601184A (en) | 2013-10-31 | 2013-10-31 | Ultrasonic receiving circuit for acceptance terminal equipment |
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| Country | Link |
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| CN (1) | CN104601184A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426614A (en) * | 2019-08-28 | 2019-11-08 | 华北电力大学（保定） | A kind of ultrasonic partial discharge sensor of high-precision signal frequency down circuit design |
-
2013
- 2013-10-31 CN CN201310529092.8A patent/CN104601184A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426614A (en) * | 2019-08-28 | 2019-11-08 | 华北电力大学（保定） | A kind of ultrasonic partial discharge sensor of high-precision signal frequency down circuit design |
| CN110426614B (en) * | 2019-08-28 | 2021-04-13 | 广州供电局有限公司 | Ultrasonic partial discharge sensor designed by high-precision signal frequency reduction circuit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |