CN104793684B - A kind of signal processing circuit of antisurge, adjustable gain, band signal isolation - Google Patents
A kind of signal processing circuit of antisurge, adjustable gain, band signal isolation Download PDFInfo
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- CN104793684B CN104793684B CN201510189094.6A CN201510189094A CN104793684B CN 104793684 B CN104793684 B CN 104793684B CN 201510189094 A CN201510189094 A CN 201510189094A CN 104793684 B CN104793684 B CN 104793684B
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Abstract
The invention discloses a kind of antisurge, adjustable gain, the signal processing circuit of band signal isolation, including 15 resistance, five electric capacity, four diodes, bidirectional triode thyristor Q1, three operational amplifiers, two with door, inductance L1, mutual inductor T1, slide rheostat RT1, digital regulation resistance U4, a signal input interface Signal_IN, a signal output interface Signal_OUT and two I/O interfaces；Present invention uses antisurge, signal isolation circuit so that circuit self-protection characteristic and capacity of resisting disturbance are strengthened.Employ digital regulation resistance in voltage comparator link, by changing the output voltage of digital regulation resistance, thus realize any regulation to reference voltage.Thus can solve to process in circuit at normal signal, the reference voltage of voltage comparator is definite value, and makes the problem that the square-wave signal dutycycle finally exported exists bigger difference.
Description
Technical field
The invention belongs to signal processing field, relate to a kind of circuit, be specifically related to a kind of antisurge, gain can
Adjust, the bandpass filtered signal of band signal isolation processes circuit.
Background technology
General signal processes circuit and comprises amplification module and filtration module, if it is desired to by the initial signal side of being converted into
Ripple signal, in addition it is also necessary to add voltage comparator module.Normal signal processes in circuit, lacks antisurge, letter
The functions such as number isolation so that the self-protection characteristic of circuit is poor.Bandwidth-limited circuit can significantly be cut down
Frequency is less than the noise signal of high-pass filtering lower frequency limit higher than low-pass filtering upper limiting frequency and frequency, but same
Time also can to useful signal produce cut down by a small margin.Normal signal processes in circuit, voltage comparator circuit
Reference voltage is also fixing, and the amplitude that so may result in has the input signal of significant difference through voltage ratio relatively
After device, the duty cycle square wave of output has significant difference, thus is unable to reach the target of signal processing.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of antisurge, adjustable gain, band signal isolation
Bandpass filtered signal process circuit, can be applicable to the process of ring spinner burn out detection signal.The present invention
Isolated by antisurge, signal, amplify, filter and voltage ratio relatively five modules form, can be by numeral electricity
Position device regulates the reference voltage of voltage comparator flexibly, so that the signal after Chu Liing reaches target.
The signal processing circuit of a kind of antisurge of the present invention, adjustable gain, band signal isolation, including 15
Resistance, five electric capacity, four diodes, bidirectional triode thyristor Q1, three operational amplifiers, two with
Door, inductance L1, mutual inductor T1, slide rheostat RT1, digital regulation resistance U4,
One signal input interface Signal_IN, a signal output interface Signal_OUT and two I/O interfaces；
The model of digital regulation resistance U4 is ISL90810UIU8Z；
One end of 12nd resistance R12 and signal input interface Signal_IN, the one of the 11st resistance R11
End, the negative electrode of the 4th diode D4 connect, the other end of the 12nd resistance R12 and the 4th diode D4's
Anode connects and ground connection, the other end of the 11st resistance R11 and one end of the 13rd resistance R13, the two or two
The negative electrode of pole pipe D2, the anode of the 3rd diode D3, one end of the 5th electric capacity C5, the 9th resistance R9
One end connects, and the other end of the 13rd resistance R13 is connected with the fixing end of slide rheostat RT1, slides and becomes
Resistance device RT1 movable end ground connection, the other end ground connection of the 5th electric capacity C5, the other end of the 9th resistance R9 with
The positive input of the second operational amplifier U2 connects, the inverting input of the second operational amplifier U2 and the
One end of one electric capacity C1, one end of the 4th resistance R4 connect, the outfan of the second operational amplifier U2 and the
The other end of one electric capacity C1, the other end of the 4th resistance R4, the anode of bidirectional triode thyristor Q1, two-way controlled
The negative electrode connection of silicon Q1, one end of the 6th resistance R6, one end of the second electric capacity C2 connect, and the second computing is put
Positive supply termination+5V the power supply of big device U2, negative supply termination-5V power supply, the control pole of bidirectional triode thyristor Q1
It is connected with one end of the 3rd resistance R3, the other end of the 3rd resistance R3 and the negative electrode of the first diode D1,
The other end of two electric capacity C2 connects, and the anode of the first diode D1 and one end of the first inductance L1 connect, the
One end of the other end of six resistance R6 and the other end of the first inductance L1, the 7th resistance R7 connects, the 7th electricity
One end of the other end of resistance R7 and one end of the 3rd electric capacity C3, the 4th electric capacity C4 connects, the 3rd electric capacity C3
The other end and the outfan of the first operational amplifier U1, one end of the second resistance R2, mutual inductor T1
In one end of a coil connect, the other end of the 4th electric capacity C4 and one end of the 8th resistance R8, first transport
The positive input calculating amplifier U1 connects, and the other end ground connection of the 8th resistance R8, the second resistance R2's is another
One end is connected with one end, the reverse input end of the first operational amplifier U1 of the first resistance R1, the first resistance
The other end ground connection of R1；Positive supply termination+5V the power supply of the first operational amplifier U1, negative supply termination-5V
Power supply, is connected with the other end of a coil and one end of the 5th resistance R5 in mutual inductor T1, the 5th electricity
The other end ground connection of resistance R5；One end of tenth resistance R10 and one end of another coil in mutual inductor T1
Connect, other end ground connection, the other end of another coil and the 3rd operational amplifier U5 in mutual inductor T1
Positive input connect, the reverse input end of the 3rd operational amplifier U5 and one end of the 14th resistance R14,
No. 7 pins of digital regulation resistance U4 connect, and 1 foot rest of digital regulation resistance U4 is empty；3rd operational amplifier
Positive supply termination+5V the power supply of U5, negative supply termination-5V power supply；No. 8 pins of digital regulation resistance U4
Connecing+5V power supply, 4,5, No. 6 pin ground connection, No. 2 pins and first are connected with the outfan of door U3A, and 3
Number pin and second is connected with the outfan of door U3B, first with two inputs of door U3A and single-chip microcomputer
One I/O mouth connects, and second is connected with an I/O mouth of single-chip microcomputer with two inputs of door U3B, the
The other end of 14 resistance R14 and the outfan of the 3rd operational amplifier U5, one end of the 15th resistance R15
Connecting, the other end of the 15th resistance R15 is connected with signal output interface Signal_OUT；Second diode
The anode of D2 connects-5V power supply, and the negative electrode of the 3rd diode D3 connects+5V power supply.
Present invention uses antisurge, signal isolation circuit so that circuit self-protection characteristic and anti-interference energy
Power is strengthened.Digital regulation resistance is employed, by changing the defeated of digital regulation resistance in voltage comparator link
Go out voltage, i.e. the reference voltage of voltage comparator, thus realize any regulation to reference voltage.Thus
Can solve in normal signal processes circuit, the reference voltage of voltage comparator is definite value, and makes last
The problem that the square-wave signal dutycycle of output exists bigger difference.
Compared with traditional signal processing circuit, circuit theory simple possible of the present invention, low cost, and circuit
Up to standard to the treatment effect of signal, the square-wave signal of output can reach expection requirement.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, the signal processing circuit of a kind of antisurge, adjustable gain, band signal isolation, including
15 resistance, five electric capacity, four diodes, bidirectional triode thyristor Q1, three operational amplifiers,
Two and door, inductance L1, mutual inductor T1, slide rheostat RT1, a numeral electricity
Position device U4, a signal input interface Signal_IN, a signal output interface Signal_OUT and two
I/O interface；The model of digital regulation resistance U4 is ISL90810UIU8Z；
One end of 12nd resistance R12 and signal input interface Signal_IN, the one of the 11st resistance R11
End, the negative electrode of the 4th diode D4 connect, the other end of the 12nd resistance R12 and the 4th diode D4's
Anode connects and ground connection, the other end of the 11st resistance R11 and one end of the 13rd resistance R13, the two or two
The negative electrode of pole pipe D2, the anode of the 3rd diode D3, one end of the 5th electric capacity C5, the 9th resistance R9
One end connects, and the other end of the 13rd resistance R13 is connected with the fixing end of slide rheostat RT1, slides and becomes
Resistance device RT1 movable end ground connection, the other end ground connection of the 5th electric capacity C5, the other end of the 9th resistance R9 with
The positive input of the second operational amplifier U2 connects, the inverting input of the second operational amplifier U2 and the
One end of one electric capacity C1, one end of the 4th resistance R4 connect, the outfan of the second operational amplifier U2 and the
The other end of one electric capacity C1, the other end of the 4th resistance R4, the anode of bidirectional triode thyristor Q1, two-way controlled
The negative electrode connection of silicon Q1, one end of the 6th resistance R6, one end of the second electric capacity C2 connect, and the second computing is put
Positive supply termination+5V the power supply of big device U2, negative supply termination-5V power supply, the control pole of bidirectional triode thyristor Q1
It is connected with one end of the 3rd resistance R3, the other end of the 3rd resistance R3 and the negative electrode of the first diode D1,
The other end of two electric capacity C2 connects, and the anode of the first diode D1 and one end of the first inductance L1 connect, the
One end of the other end of six resistance R6 and the other end of the first inductance L1, the 7th resistance R7 connects, the 7th electricity
One end of the other end of resistance R7 and one end of the 3rd electric capacity C3, the 4th electric capacity C4 connects, the 3rd electric capacity C3
The other end and the outfan of the first operational amplifier U1, one end of the second resistance R2, mutual inductor T1
In one end of a coil connect, the other end of the 4th electric capacity C4 and one end of the 8th resistance R8, first transport
The positive input calculating amplifier U1 connects, and the other end ground connection of the 8th resistance R8, the second resistance R2's is another
One end is connected with one end, the reverse input end of the first operational amplifier U1 of the first resistance R1, the first resistance
The other end ground connection of R1；Positive supply termination+5V the power supply of the first operational amplifier U1, negative supply termination-5V
Power supply, is connected with the other end of a coil and one end of the 5th resistance R5 in mutual inductor T1, the 5th electricity
The other end ground connection of resistance R5；One end of tenth resistance R10 and one end of another coil in mutual inductor T1
Connect, other end ground connection, the other end of another coil and the 3rd operational amplifier U5 in mutual inductor T1
Positive input connect, the reverse input end of the 3rd operational amplifier U5 and one end of the 14th resistance R14,
No. 7 pins of digital regulation resistance U4 connect, and 1 foot rest of digital regulation resistance U4 is empty；3rd operational amplifier
Positive supply termination+5V the power supply of U5, negative supply termination-5V power supply；No. 8 pins of digital regulation resistance U4
Connecing+5V power supply, 4,5, No. 6 pin ground connection, No. 2 pins and first are connected with the outfan of door U3A, and 3
Number pin and second is connected with the outfan of door U3B, first with two inputs of door U3A and single-chip microcomputer
One I/O mouth connects, and second is connected with an I/O mouth of single-chip microcomputer with two inputs of door U3B, the
The other end of 14 resistance R14 and the outfan of the 3rd operational amplifier U5, one end of the 15th resistance R15
Connecting, the other end of the 15th resistance R15 is connected with signal output interface Signal_OUT；Second diode
The anode of D2 connects-5V power supply, and the negative electrode of the 3rd diode D3 connects+5V power supply.
The work process of the present invention is as follows:
Primary signal V0 is electric through protection circuit, voltage magnitude regulation by signal input interface Signal_IN end
Road, filter capacitor are input to the positive input of the second operational amplifier U2.Wherein the 12nd resistance R12,
4th diode D4, the second diode D2, the 3rd diode D3 constitutes two overvoltage crowbars, prevents
Signal voltage moment is excessive burns out circuit, the 11st resistance R11, the 13rd resistance R13 and slide rheostat
RT1 constitutes voltage magnitude regulation circuit, makes signal become V1 by regulation slide rheostat RT1, and its width is
V0 (R13+RT1)/(R11+R13+RT1), the signal V1 after adjusting amplitude are after the 5th electric capacity C5 filtering
It is input to the positive input of the second operational amplifier U2.First electric capacity C1 and the 4th resistance R4 constitutes resonance
Circuit is used as filtering, and they constitute voltage follower circuit together with the second operational amplifier U2, play signal every
From effect.First diode D1, bidirectional triode thyristor Q1, second electric capacity C2, the 3rd resistance R3, the 6th electricity
The circuit that resistance R6 and inductance L1 is constituted plays the effect of antisurge.Signal V1 is through follow circuit and antisurge
It is input to after circuit in bandwidth-limited circuit and amplifying circuit, wherein the 7th resistance R7, the 8th resistance R8, the
Three electric capacity C3, the 4th electric capacity C4 and the first operational amplifier U1 constitute second order bandwidth-limited circuit.Low pass
The upper limiting frequency of filtering is: fl=1/ (2 π R7C3)；The lower frequency limit of high-pass filtering is: fh=1/ (2 π
R8C4).Amplifying circuit is made up of the first resistance R1, the second resistance R2, first operational amplifier U1, puts
Big multiple is A=1+R2/R1.After bandpass filtering and amplifying circuit, output signal is V2, signal V2
The positive input of the 3rd operational amplifier U5, the 3rd operational amplifier it is input to after mutual inductor T1
U5 plays the effect of voltage comparator, and reference voltage is that single-chip microcomputer is by controlling numeral electricity with door U3A and U3B
The output of position device U4 obtains, and the reference voltage of output is the most adjustable.After signal V2 compares with reference voltage,
Signal output port Signal_OUT end will export square-wave signal.
Claims (1)
1. antisurge, adjustable gain, a signal processing circuit for band signal isolation, including 15 electricity
Resistance, five electric capacity, four diodes, bidirectional triode thyristor Q1, three operational amplifiers, two with
Door, inductance L1, mutual inductor T1, slide rheostat RT1, a digital regulation resistance
U4, a signal input interface Signal_IN, a signal output interface Signal_OUT and two I/O
Interface；The model of digital regulation resistance U4 is ISL90810UIU8Z；
It is characterized in that: one end of the 12nd resistance R12 and signal input interface Signal_IN, the 11st
One end of resistance R11, the negative electrode of the 4th diode D4 connect, the other end of the 12nd resistance R12 and the
The anode of four diode D4 connects and ground connection, the other end of the 11st resistance R11 and the 13rd resistance R13
One end, the negative electrode of the second diode D2, the anode of the 3rd diode D3, one end of the 5th electric capacity C5,
One end of 9th resistance R9 connects, and the other end of the 13rd resistance R13 is fixing with slide rheostat RT1's
End connects, the movable end ground connection of slide rheostat RT1, the other end ground connection of the 5th electric capacity C5, the 9th electricity
The other end of resistance R9 and the positive input of the second operational amplifier U2 connect, the second operational amplifier U2
Inverting input and one end of the first electric capacity C1, the 4th resistance R4 one end connect, the second computing is put
The outfan of big device U2 and the other end of the first electric capacity C1, the other end of the 4th resistance R4, two-way controlled
The anode of silicon Q1, the negative electrode connection of bidirectional triode thyristor Q1, one end of the 6th resistance R6, the second electric capacity C2
One end connect, the positive supply of the second operational amplifier U2 termination+5V power supply, negative supply termination-5V electricity
Source, the pole that controls of bidirectional triode thyristor Q1 is connected with one end of the 3rd resistance R3, another of the 3rd resistance R3
End is connected with negative electrode, the other end of the second electric capacity C2 of the first diode D1, the sun of the first diode D1
Pole is connected with one end of the first inductance L1, the other end of the 6th resistance R6 and the other end of the first inductance L1,
One end of 7th resistance R7 connects, the other end of the 7th resistance R7 and one end of the 3rd electric capacity C3, the 4th
One end of electric capacity C4 connects, the other end of the 3rd electric capacity C3 and the outfan of the first operational amplifier U1,
In one end of second resistance R2, mutual inductor T1, one end of a coil connects, and the 4th electric capacity C4's is another
One end is connected with one end, the positive input of the first operational amplifier U1 of the 8th resistance R8, the 8th electricity
The other end ground connection of resistance R8, the other end of the second resistance R2 and one end of the first resistance R1, the first computing
The reverse input end of amplifier U1 connects, the other end ground connection of the first resistance R1；First operational amplifier
Positive supply termination+5V the power supply of U1, negative supply termination-5V power supply, with a coil in mutual inductor T1
The other end and the 5th resistance R5 one end connect, the other end ground connection of the 5th resistance R5；Tenth resistance
One end of R10 is connected with one end of another coil in mutual inductor T1, other end ground connection, mutual inductor
In T1, the other end of another coil and the positive input of the 3rd operational amplifier U5 connect, the 3rd computing
The reverse input end of amplifier U5 and one end of the 14th resistance R14, No. 7 of digital regulation resistance U4 draw
Foot connects, and 1 foot rest of digital regulation resistance U4 is empty；Positive supply termination+5V the electricity of the 3rd operational amplifier U5
Source, negative supply termination-5V power supply；No. 8 pins of digital regulation resistance U4 connect+5V power supply, and 4,5,6
Number pin ground connection, No. 2 pins and first are connected with the outfan of door U3A, No. 3 pins and second with door U3B
Outfan connect, first is connected with an I/O mouth of single-chip microcomputer with two inputs of door U3A, the
Two are connected with an I/O mouth of single-chip microcomputer with two inputs of door U3B, and the 14th resistance R14's is another
One end is connected with outfan, one end of the 15th resistance R15 of the 3rd operational amplifier U5, the 15th electricity
The other end of resistance R15 is connected with signal output interface Signal_OUT；The anode of the second diode D2 connects
-5V power supply, the negative electrode of the 3rd diode D3 connects+5V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189094.6A CN104793684B (en) | 2015-04-20 | 2015-04-20 | A kind of signal processing circuit of antisurge, adjustable gain, band signal isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189094.6A CN104793684B (en) | 2015-04-20 | 2015-04-20 | A kind of signal processing circuit of antisurge, adjustable gain, band signal isolation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104793684A CN104793684A (en) | 2015-07-22 |
| CN104793684B true CN104793684B (en) | 2016-09-28 |
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| CN201510189094.6A Active CN104793684B (en) | 2015-04-20 | 2015-04-20 | A kind of signal processing circuit of antisurge, adjustable gain, band signal isolation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7494076B2 (en) * | 2020-09-24 | 2024-06-03 | 株式会社東芝 | Signal Processing Circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4105407B2 (en) * | 2001-06-15 | 2008-06-25 | 富士通株式会社 | Coil drive circuit for magnetic field application device, information storage device, and coil drive control method for magnetic field application device |
| US7615981B2 (en) * | 2004-06-09 | 2009-11-10 | O2Micro International Limited | Boost converter with enhanced control capabilities of emulating an inductor current |
| DE102004043609A1 (en) * | 2004-09-07 | 2006-03-30 | Reinhard Kalfhaus | DC converter |
| CN100561845C (en) * | 2005-09-16 | 2009-11-18 | 鸿富锦精密工业（深圳）有限公司 | Self-device synchronous rectification and voltage stabilizing circuit |
| CN102668354B (en) * | 2009-12-01 | 2016-01-13 | Abb瑞士有限公司 | For running the method for converter circuit and the device for implementing the method |
| US8558517B2 (en) * | 2011-09-15 | 2013-10-15 | Compuware Technology Inc. | Power supply with virtual by-pass system |
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Effective date of registration: 20201216 Address after: 314500 Tongxiang City, Jiaxing, Zhejiang, Tung Tung Road, Wu Tung Street (East) 55, Tongxiang chamber of Commerce Building 1 unit 1702, 1703 room -A-220 Patentee after: Jiaxing Beixi Electromechanical Equipment Co.,Ltd. Address before: Room 3003-1, building 1, Gaode land center, Jianggan District, Hangzhou City, Zhejiang Province Patentee before: Zhejiang Zhiduo Network Technology Co.,Ltd. Effective date of registration: 20201216 Address after: Room 3003-1, building 1, Gaode land center, Jianggan District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Zhiduo Network Technology Co.,Ltd. Address before: 310018 No. 2 street, Xiasha Higher Education Zone, Hangzhou, Zhejiang Patentee before: HANGZHOU DIANZI University |
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