CN203827305U - Square wave signal extraction circuit corresponding to high-amplitude sinusoidal waves - Google Patents

Square wave signal extraction circuit corresponding to high-amplitude sinusoidal waves Download PDF

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Publication number
CN203827305U
CN203827305U CN201420124633.9U CN201420124633U CN203827305U CN 203827305 U CN203827305 U CN 203827305U CN 201420124633 U CN201420124633 U CN 201420124633U CN 203827305 U CN203827305 U CN 203827305U
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China
Prior art keywords
resistance
pin
comparator
capacitor
diode
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Expired - Fee Related
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CN201420124633.9U
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Chinese (zh)
Inventor
曾潜明
魏旺全
陈艳
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CHENGDU YINZHONG DIGITAL EQUIPMENT Co Ltd
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CHENGDU YINZHONG DIGITAL EQUIPMENT Co Ltd
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Abstract

The utility model relates to a square wave signal extraction circuit corresponding to high-amplitude sinusoidal waves. According to the square wave signal extraction circuit of the utility model, a pin BS, a pin BAL and a pin VCC+ of a comparator are respectively connected with the positive pole of a first power source and a grounded capacitor C4; a pin VCC- of the comparator is connected with the negative pole of the first power source and a grounded capacitor C3; a pin IN+ of the comparator is connected with a signal input circuit; a pin IN- of the comparator is connected in series with a grounded capacitor C2; a pin E0 of the comparator is connected with a grounding end of the grounded capacitor C2; the pin IN- of the comparator is connected with a resistor R7; one end of the resistor R7 is connected with the grounding end of the grounded capacitor C2; the pin IN- of the comparator is connected with a diode D3 and a resistor R6; the anode of the diode D3 is connected with the pin IN-; the cathode of the diode D3 is connected with the resistor R6; and one end of the resistor R6 is connected with a common end of the grounded capacitor C2 and the capacitor R7. The square wave signal extraction circuit of the utility model has the advantages of excellent anti-interference performance and high-accuracy extracted square wave signals.

Description

The sinusoidal wave corresponding square-wave signal of a kind of and high amplitude extracts circuit
Technical field
The utility model relates to a kind of square-wave signal and extracts circuit, relates in particular the sinusoidal wave corresponding square-wave signal of a kind of and high amplitude and extracts circuit.
Background technology
Square-wave signal sometimes needs to obtain different signals to reach different effects when processing, as sometimes needed, obtain and the synchronous square-wave signal of input signal same frequency, sometimes need again to obtain the sine wave signal of the high amplitude of input signal, namely input signal is extracted to obtain again required signal, the utility model is exactly that a kind of square-wave signal extracts circuit, for extracting and the sinusoidal wave corresponding square-wave signal of high amplitude.
Utility model content
The utility model provides the sinusoidal wave corresponding square-wave signal of a kind of and high amplitude to extract circuit, for extracting and the sinusoidal wave corresponding square-wave signal of high amplitude, having, extracts efficient, stable and feature accurately, and strong interference immunity.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: the sinusoidal wave corresponding square-wave signal of a kind of and high amplitude extracts circuit, comprise comparator U1, the pin BS of comparator U1, pin BAL and pin VCC+ are all connected with the capacitor C 4 of the first positive source+15V BAC and ground connection, the pin VCC-of described comparator U1 connects the capacitor C 3 of the first power cathode-15V BAC and ground connection, the pin IN+ of described comparator U1 is connected with signal input circuit, the pin IN-of described comparator U1 is serially connected with the capacitor C 2 of ground connection, the pin E0 of described comparator U1 connects the earth terminal of capacitor C 2, the pin IN-of described comparator U1 is also connected with resistance R 7, resistance R 7 one ends are connected on the earth terminal of capacitor C 2, the pin IN-of described comparator U1 is also connected with diode D3 and resistance R 6, the anode of diode D3 is connected with pin IN+, the negative electrode contact resistance R6 of described diode D3, the other end of resistance R 6 is connected to the common port of capacitor C 2 and resistance R 7, the pin CO of described comparator U1 is by resistance R 9 connecting triode Q1, the base stage of triode Q1 is connected with resistance R 9, the grounded emitter of described triode Q1, the collector electrode of described triode Q1 is connected with signal comparator circuit, the pin CO of described comparator U1 and the common port of resistance R 9 are connected with second source+5V BAC by resistance R 8.
Described signal input circuit comprises transformer TR, the former limit of transformer TR connects respectively input positive circuit BASC+ and input negative circuit BASC-, the upper contact resistance R2 of described input negative circuit BASC-, described input positive circuit BASC+ is in series with resistance R 1 and resistance R 3, between described input positive circuit BASC+ and input negative circuit BASC-, be also connected with diode D1, diode D2 and resistance R 4, the anodic bonding resistance R 2 of described diode D1, the negative electrode of described diode D1 connects the negative electrode of diode D2, the anodic bonding of described diode D2 is at the common port of resistance R 1 and resistance R 3, described resistance R 4 one end are connected to resistance R 2, described resistance R 4 other ends connect resistance R 3, secondary one end ground connection of described transformer TR and the other end are connected with the pin IN+ of comparator U1 by resistance R 5, the common port of described resistance R 5 and comparator U1 pin IN+ is also connected with the capacitor C 1 of ground connection.
Described signal comparator circuit comprises the optical coupler U2 being connected with triode Q1, the pin 1 of optical coupler U2 is connected with second source+5V BAC by resistance R 10, the common port of second source+5V BAC and resistance R 10 is also connected with the capacitor C 5 of ground connection, the pin 3 of described optical coupler U2 connects relatively power supply PWRM+3.3V, relatively power supply PWRM+3.3V is connected with the capacitor C 6 of ground connection, the pin 4 of described optical coupler U2 connects signal output apparatus BASI PHI, described relatively power supply PWRM+3.3V connects signal output apparatus BASI PHI by resistance R 11, pin 5 ground connection of described optical coupler U2.
Described transformer TR model is TR0101, and the model of described comparator U1 is LM311D, and described triode Q1 model is 9013, and described optical coupler U2 model is PS9714.
Compared with prior art, the beneficial effects of the utility model are: the sinusoidal wave corresponding square-wave signal of this and high amplitude of the utility model design extracts circuit, not only anti-interference is good, and signal extraction is stable, efficient, and the accuracy of the square-wave signal of extraction is high.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment
The sinusoidal wave corresponding square-wave signal of a kind of and high amplitude as shown in Figure 1 extracts circuit, comprise comparator U1, the pin BS of comparator U1, pin BAL and pin VCC+ are all connected with the capacitor C 4 of the first positive source+15V BAC and ground connection, the pin VCC-of described comparator U1 connects the capacitor C 3 of the first power cathode-15V BAC and ground connection, the pin IN+ of described comparator U1 is connected with signal input circuit, the pin IN-of described comparator U1 is serially connected with the capacitor C 2 of ground connection, the pin E0 of described comparator connects the earth terminal of C2, the pin IN-of described comparator U1 is also connected with resistance R 7, resistance R 7 one ends are connected on the earth terminal of capacitor C 2, the pin IN-of described comparator U1 is also connected with diode D3 and resistance R 6, the anode of diode D3 is connected with pin IN+, the negative electrode contact resistance R6 of described diode D3, the other end of resistance R 6 is connected to the common port of capacitor C 2 and resistance R 7, the pin CO of described comparator U1 is by resistance R 9 connecting triode Q1, the base stage of triode Q1 is connected with resistance R 9, the grounded emitter of described triode Q1, the collector electrode of described triode Q1 is connected with signal comparator circuit, the pin CO of described comparator U1 and the common port of resistance R 9 are connected with second source+5V BAC by resistance R 8.
Described signal input circuit comprises transformer TR, the former limit of transformer TR connects respectively input positive circuit BASC+ and input negative circuit BASC-, the upper contact resistance R2 of described input negative circuit BASC-, described input positive circuit BASC+ is in series with resistance R 1 and resistance R 3, between described input positive circuit BASC+ and input negative circuit BASC-, be also connected with diode D1, diode D2 and resistance R 4, the anodic bonding resistance R 2 of described diode D1, the negative electrode of described diode D1 connects the negative electrode of diode D2, the anodic bonding of described diode D2 is at the common port of resistance R 1 and resistance R 3, described resistance R 4 one end are connected to resistance R 2, described resistance R 4 other ends connect resistance R 3, secondary one end ground connection of described transformer TR and the other end are connected with the pin IN+ of comparator U1 by resistance R 5, the common port of described resistance R 5 and comparator U1 pin IN+ is also connected with the capacitor C 1 of ground connection.
Described signal comparator circuit comprises the optical coupler U2 being connected with triode Q1, the pin 1 of optical coupler U2 is connected with second source+5V BAC by resistance R 10, the common port of second source+5V BAC and resistance R 10 is also connected with the capacitor C 5 of ground connection, the pin 3 of described optical coupler U2 connects relatively power supply PWRM+3.3V, relatively power supply PWRM+3.3V is connected with the capacitor C 6 of ground connection, the pin 4 of described optical coupler U2 connects signal output apparatus BASI PHI, described relatively power supply PWRM+3.3V connects signal output apparatus BASI PHI by resistance R 11, pin 5 ground connection of described optical coupler U2.
Described transformer TR model is TR0101, and the model of described comparator U1 is LM311D, and described triode Q1 model is 9013, and described optical coupler U2 model is PS9714.
In the present embodiment, the pin 1 of optical coupler U2 is Anode pin, and pin 2 is Cathode pin, and pin 3 is VCC pin, and pin 4 is VO pin, and pin 5 is GND pin, for simplifying the special numeral that adopts of accompanying drawing.
In the present embodiment, capacitor C 2 is storage capacitors, setting the high amplitude of input signal is Vh, low amplitude value is Vl, when having high amplitude signal input, the current potential Vc of this capacitor C 2 will be charged to Vh-0.7,0.7 is the forward conduction voltage drop of diode D3, during reference potential that the Vc of take is comparator, while only having high amplitude signal input, comparator U1 just has high level output, thereby extract the square-wave signal corresponding with high amplitude sine wave signal, the resistance of resistance R 7 should be greater than the resistance of resistance R 6, for guaranteeing the current potential Vc of capacitor C 2.Input signal makes reference with capacitor C 2, comparator U1 exports high level when the high amplitude signal of input, end output low level not during amplitude, obtain the square-wave signal corresponding with high amplitude sine wave signal, after the square-wave signal obtaining amplifies by triode Q1, by optical coupler U2, receive after producing photoelectric current and by signal output apparatus BASI PHI, export after resistance R 11 dividing potential drops and capacitor C 6 filtering.
The present embodiment input signal is through diode D1 and diode D2 voltage stabilizing, after resistance R 4 dividing potential drops, by transformer TR, be input to comparator U1, resistance R 5 shuntings, and capacitor C 1 plays filter action, the capacitor C 2 that comparator U1 connects and capacitor C 3 are for guaranteeing the stable of outside the first power supply, optical coupler U2 contact resistance R11, R11 divides to obtain power supply PWRM+3.3V voltage, for substituting zero balancing point in the past, thereby can guarantee the normal output of desired signal, capacitor C 6 is also filter action, not only anti-interference is good, and signal extraction is stable, efficiently, the accuracy of the square-wave signal extracting is high.
Be as mentioned above embodiment of the present utility model.The utility model is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, within all falling into protection range of the present utility model.

Claims (3)

1. one kind is extracted circuit with the sinusoidal wave corresponding square-wave signal of high amplitude, it is characterized in that: comprise comparator U1, the pin BS of comparator U1, pin BAL and pin VCC+ are all connected with the capacitor C 4 of the first positive source+15V BAC and ground connection, the pin VCC-of described comparator U1 connects the capacitor C 3 of the first power cathode-15V BAC and ground connection, the pin IN+ of described comparator U1 is connected with signal input circuit, the pin IN-of described comparator U1 is serially connected with the capacitor C 2 of ground connection, the pin E0 of described comparator U1 connects the earth terminal of capacitor C 2, the pin IN-of described comparator U1 is also connected with resistance R 7, resistance R 7 one ends are connected on the earth terminal of capacitor C 2, the pin IN-of described comparator U1 is also connected with diode D3 and resistance R 6, the anode of diode D3 is connected with pin IN+, the negative electrode contact resistance R6 of described diode D3, the other end of resistance R 6 is connected to the common port of capacitor C 2 and resistance R 7, the pin CO of described comparator U1 is by resistance R 9 connecting triode Q1, the base stage of triode Q1 is connected with resistance R 9, the grounded emitter of described triode Q1, the collector electrode of described triode Q1 is connected with signal comparator circuit, the pin CO of described comparator U1 and the common port of resistance R 9 are connected with second source+5V BAC by resistance R 8.
2. square-wave signal a kind of and that high amplitude sine wave is corresponding according to claim 1 extracts circuit, it is characterized in that: described signal input circuit comprises transformer TR, the former limit of transformer TR connects respectively input positive circuit BASC+ and input negative circuit BASC-, the upper contact resistance R2 of described input negative circuit BASC-, described input positive circuit BASC+ is in series with resistance R 1 and resistance R 3, between described input positive circuit BASC+ and input negative circuit BASC-, be also connected with diode D1, diode D2 and resistance R 4, the anodic bonding resistance R 2 of described diode D1, the negative electrode of described diode D1 connects the negative electrode of diode D2, the anodic bonding of described diode D2 is at the common port of resistance R 1 and resistance R 3, described resistance R 4 one end are connected to resistance R 2, described resistance R 4 other ends connect resistance R 3, secondary one end ground connection of described transformer TR and the other end are connected with the pin IN+ of comparator U1 by resistance R 5, the common port of described resistance R 5 and comparator U1 pin IN+ is also connected with the capacitor C 1 of ground connection.
3. square-wave signal a kind of and that high amplitude sine wave is corresponding according to claim 1 extracts circuit, it is characterized in that: described signal comparator circuit comprises the optical coupler U2 being connected with triode Q1, the pin 1 of optical coupler U2 is connected with second source+5V BAC by resistance R 10, the common port of second source+5V BAC and resistance R 10 is also connected with the capacitor C 5 of ground connection, the pin 3 of described optical coupler U2 connects relatively power supply PWRM+3.3V, relatively power supply PWRM+3.3V is connected with the capacitor C 6 of ground connection, the pin 4 of described optical coupler U2 connects signal output apparatus BASI PHI, described relatively power supply PWRM+3.3V connects signal output apparatus BASI PHI by resistance R 11, pin 5 ground connection of described optical coupler U2.
CN201420124633.9U 2014-03-19 2014-03-19 Square wave signal extraction circuit corresponding to high-amplitude sinusoidal waves Expired - Fee Related CN203827305U (en)

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CN201420124633.9U CN203827305U (en) 2014-03-19 2014-03-19 Square wave signal extraction circuit corresponding to high-amplitude sinusoidal waves

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Application Number Priority Date Filing Date Title
CN201420124633.9U CN203827305U (en) 2014-03-19 2014-03-19 Square wave signal extraction circuit corresponding to high-amplitude sinusoidal waves

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103825587A (en) * 2014-03-19 2014-05-28 成都引众数字设备有限公司 Circuit for extracting square wave signal corresponding to high-amplitude sine wave

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103825587A (en) * 2014-03-19 2014-05-28 成都引众数字设备有限公司 Circuit for extracting square wave signal corresponding to high-amplitude sine wave
CN103825587B (en) * 2014-03-19 2017-05-24 成都引众数字设备有限公司 Circuit for extracting square wave signal corresponding to high-amplitude sine wave

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140910

Termination date: 20150319

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