CN109613201A - Corrosive pipeline degree measuring instrument signal compensation circuit - Google Patents
Corrosive pipeline degree measuring instrument signal compensation circuit Download PDFInfo
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- CN109613201A CN109613201A CN201811634495.8A CN201811634495A CN109613201A CN 109613201 A CN109613201 A CN 109613201A CN 201811634495 A CN201811634495 A CN 201811634495A CN 109613201 A CN109613201 A CN 109613201A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
Abstract
The invention discloses corrosive pipeline degree measuring instrument signal compensation circuits, including frequency collection circuit, recommend buffer circuit and compensation output circuit, frequency analog signal when the frequency collection circuit acquisition pipeline degree of corrosion measuring instrument work, the buffer circuit of recommending is with triode Q3, triode Q4, triode Q5 and diode D4, the push-pull circuit of diode D3 composition is to signal processing, resistance R8 is used simultaneously, the buffer circuit of capacitor C4 and triode Q6 composition is to signal buffer, and triode Q5 emitter is outputed signal to triode Q7 feedback transport and placing device AR1, last transport and placing device AR2 is the same as in input offset output circuit after phase amplified signal, the last compensation output circuit divides post-compensation transport and placing device AR2 output signal through variable resistance RW2 with power supply+10V, and And with exporting after resistance R16, resistance R17 and capacitor C5, capacitor C6 composition RC circuit filtering, frequency analog signal can be converted to the thermal compensation signal of the analog signal of corrosive pipeline degree measuring instrument.
Description
Technical field
The present invention relates to signal calibration technical fields, more particularly to corrosive pipeline degree measuring instrument signal compensation circuit.
Background technique
Corrosive pipeline detection refers to the pipeline detection for the purpose of detecting the metal loss such as corrosion of the pipe wall, to understand
The case where service pipeline is damaged in working environment, it is ensured that defect and damage are detected before serious problems occur for pipeline, and
Corrosive pipeline degree measuring instrument signal compensation circuit is the signal calibration to acquisition, improves the measurement essence of corrosive pipeline degree measuring instrument
Degree, however in practice, the working environment of corrosive pipeline detector is uncontrollable, and when encountering strong magnetic field circumstance, corrosive pipeline degree is surveyed
The analog signal that receives of amount instrument controlling terminal will frequency hopping, or even signal can be caused to lose because of signal power deficiency in the transmission
Very, the measurement accuracy of corrosive pipeline degree measuring instrument is seriously affected.
So the present invention provides the new scheme of one kind to solve the problems, such as this.
Summary of the invention
For above situation, for the defect for overcoming the prior art, purpose of the present invention is to provide the measurements of corrosive pipeline degree
Instrument signal compensation circuit, have be skillfully constructed, the characteristic of human oriented design, frequency analog signal can be converted to pipeline corruption
The thermal compensation signal of the analog signal of erosion degree measuring instrument, while signal is calibrated automatically, stabilization signal frequency.
Its technical solution solved is corrosive pipeline degree measuring instrument signal compensation circuit, including frequency collection circuit, is recommended
Buffer circuit and compensation output circuit, the analog signal frequency when frequency collection circuit acquisition pipeline degree of corrosion measuring instrument works
Rate, the analog signal are corrosive pipeline degree measuring instrument controlling terminal received signal, are opened with triode Q1, triode Q2 composition
Low level signal is isolated in powered-down road, and the buffer circuit of recommending is with triode Q3, triode Q4, triode Q5 and diode
The push-pull circuit of D4, diode D3 composition not only improves the load capacity of circuit to signal processing, but also improves switching speed, simultaneously
With the buffer circuit of resistance R8, capacitor C4 and triode Q6 composition to signal buffer, and amplifier is fed back with triode Q7
Device AR1 outputs signal to triode Q5 emitter, adjusts the signal conduction value of push-pull circuit, the last same Xiang Fang great of transport and placing device AR2
After signal in input offset output circuit, the last compensation output circuit is with power supply+10V after variable resistance RW2 partial pressure
Transport and placing device AR2 output signal is compensated, and after utilization resistance R16, resistance R17 and capacitor C5, capacitor C6 composition RC circuit filtering
Output that is to say analog signal when compensation corrosive pipeline degree measuring instrument work；
The buffer circuit of recommending includes diode D4, and the cathode of diode D4 connects the anode of diode D3, and diode D3's is negative
Pole connects the base stage of triode Q5, and the anode of diode D4 connects the base stage of triode Q3 and one end of resistance R2, the collection of triode Q3
Electrode connects the non-inverting input terminal of power supply+5V, the collector of one end of resistance R2 and triode Q4, transport and placing device AR1, triode Q4's
Base stage connects the emitter of triode Q3 and the collector of triode Q5, and the base stage of triode Q5 connects the cathode of diode D3, three poles
One end of the emitter connecting resistance R6 of pipe Q4, the other end ground connection of resistance R6, the anti-phase input terminating resistor R3 of transport and placing device AR1,
One end of resistance R5, the other end ground connection of resistance R3, the one of the output other end of terminating resistor R5 of transport and placing device AR1, resistance R7
End, one end of resistance R8 and the cathode of voltage-stabiliser tube D5, one end of capacitor C2, the anode of diode D6 and diode D7 are just
Pole, the collector of triode Q6, diode D8 cathode, capacitor C2 the other end ground connection, the other end and diode of resistance R8
The cathode of D7 connects one end of capacitor C4, the emitter and resistance of the anode of another terminating diode D8 of capacitor C4, triode Q6
One end of R10, the base stage of triode Q6 connect cathode and resistance R11, the other end of resistance R7 and triode Q7 of diode D6
Collector, the emitter of triode Q7 connects the cathode of voltage-stabiliser tube D9, the one of the positive connecting resistance R9 of voltage-stabiliser tube D9, capacitor C3
End, resistance R9, capacitor C3 another terminating resistor R4 one end, the emitter of another termination triode Q5 of resistance R4, resistance
The non-inverting input terminal of another termination transport and placing device AR2 of R10, resistance R11, anti-phase input terminating resistor R12, the electricity of transport and placing device AR2
Hinder one end of R14, the other end ground connection of resistance R12, the other end of the output terminating resistor R14 of transport and placing device AR2.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art；
1. with the push-pull circuit of triode Q3, triode Q4, triode Q5 and diode D4, diode D3 composition to signal
Processing had not only improved the load capacity of circuit, but also has improved switching speed, and with transport and placing device AR1 with phase amplified signal, in order to anti-
Stop signal directly inputs in transport and placing device AR2 non-inverting input terminal, the buffer circuit formed with resistance R8, capacitor C4 and triode Q6
To signal buffer, inputs signal gently in transport and placing device AR2 non-inverting input terminal, guarantee the stabilization of signal；
2. triode Q5 emitter is outputed signal to triode Q7 feedback transport and placing device AR1, when transport and placing device AR1 output signal electricity
When position is excessively high, triode Q7 is connected at this time, feedback signal to triode Q5 emitter, and triode Q5 emitter potential increases,
It is that trigger triode Q4 base stage conducting potential drop is low, realizes the effect for reducing the signal conduction value of push-pull circuit, realize
The automatic calibration to signal；
3. can change the current potential of thermal compensation signal by adjusting variable resistance RW2 resistance value current potential size, due to recommending buffer circuit
Potential value is insufficient to compensate for the analog signal when work of corrosive pipeline degree measuring instrument, therefore can power transformation with external power supply+10V warp
It is the base current potential of transport and placing device AR2 output signal after hindering RW2 partial pressure, and uses resistance R16, resistance R17 and capacitor C5, capacitor C6
It is exported after composition RC circuit filtering, that is to say analog signal when compensation corrosive pipeline degree measuring instrument work, anti-stop signal is because of letter
Number underpower leads to distorted signals.
Detailed description of the invention
Fig. 1 is the module map of inventive pipeline degree of corrosion measuring instrument signal compensation circuit.
Fig. 2 is the schematic diagram of inventive pipeline degree of corrosion measuring instrument signal compensation circuit.
Fig. 3 is to recommend buffer circuit schematic diagram in inventive pipeline degree of corrosion measuring instrument signal compensation circuit.
Specific embodiment
For the present invention aforementioned and other technology contents, feature and effect, in following cooperation with reference to figures 1 through attached drawing 3
To in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is with specification
Attached drawing is reference.
Embodiment one, corrosive pipeline degree measuring instrument signal compensation circuit, including frequency collection circuit, recommend buffer circuit and
Compensate output circuit, the frequency analog signal when frequency collection circuit acquisition pipeline degree of corrosion measuring instrument works, the simulation
Signal be corrosive pipeline degree measuring instrument controlling terminal received signal, with triode Q1, triode Q2 composition switching circuit every
From low level signal, the buffer circuit of recommending is with triode Q3, triode Q4, triode Q5 and diode D4, diode
The push-pull circuit of D3 composition not only improves the load capacity of circuit to signal processing, but also improves switching speed, while using resistance
The buffer circuit of R8, capacitor C4 and triode Q6 composition is exported to signal buffer, and with triode Q7 feedback transport and placing device AR1
Signal adjusts the signal conduction value of push-pull circuit to triode Q5 emitter, and last transport and placing device AR2 after phase amplified signal the same as inputting
It compensates in output circuit, the last compensation output circuit divides post-compensation transport and placing device through variable resistance RW2 with power supply+10V
AR2 output signal, and with being exported after resistance R16, resistance R17 and capacitor C5, capacitor C6 composition RC circuit filtering, it that is to say
Compensate the analog signal when work of corrosive pipeline degree measuring instrument；
The buffer circuit of recommending is pushed away with what triode Q3, triode Q4, triode Q5 and diode D4, diode D3 were formed
Circuit is drawn to signal processing, not only improves the load capacity of circuit, but also improve switching speed, and is mutually put with transport and placing device AR1 is same
Big signal, signal directly inputs in transport and placing device AR2 non-inverting input terminal in order to prevent, with resistance R8, capacitor C4 and triode Q6
The buffer circuit of composition inputs signal gently in transport and placing device AR2 non-inverting input terminal signal buffer, for further stable fortune
Device AR2 homophase input end signal is put, triode Q5 emitter is outputed signal to triode Q7 feedback transport and placing device AR1, works as fortune
Put device AR1 output signal current potential it is excessively high when, at this time triode Q7 be connected, feedback signal to triode Q5 emitter, triode Q5
Emitter potential increases, and that is to say that trigger triode Q4 base stage conducting potential drop is low, the signal for realizing reduction push-pull circuit is led
The effect of logical value, wherein resistance R9 and capacitor C3 is filter circuit, and last transport and placing device AR2 is defeated with input offset after phase amplified signal
Out in circuit, it is all the way transport and placing device AR1 output signal current potential, another way that transport and placing device AR2 non-inverting input terminal, which is two paths of signals input,
For the signal after buffer circuit buffering, transport and placing device AR2 plays the role of add circuit, and the cathode of diode D4 connects diode D3's
Anode, the cathode of diode D3 connect the base stage of triode Q5, and the anode of diode D4 connects the base stage and resistance R2 of triode Q3
One end, the collector of triode Q3 connect the same phase of power supply+5V, the collector of one end of resistance R2 and triode Q4, transport and placing device AR1
Input terminal, the base stage of triode Q4 connect the emitter of triode Q3 and the collector of triode Q5, and the base stage of triode Q5 connects two
The cathode of pole pipe D3, one end of the emitter connecting resistance R6 of triode Q4, the other end ground connection of resistance R6, transport and placing device AR1's is anti-
Mutually one end of input terminating resistor R3, resistance R5, the other end ground connection of resistance R3, the output terminating resistor R5's of transport and placing device AR1
The other end, one end of resistance R7, one end of resistance R8 and the cathode of voltage-stabiliser tube D5, one end of capacitor C2, diode D6 anode
And the cathode of the anode of diode D7, the collector of triode Q6, diode D8, the other end ground connection of capacitor C2, resistance R8
The other end and the cathode of diode D7 connect one end of capacitor C4, anode, the triode of another terminating diode D8 of capacitor C4
The emitter of Q6 and one end of resistance R10, the base stage of triode Q6 connect diode D6 cathode and resistance R11, resistance R7 it is another
The emitter of the collector of one end and triode Q7, triode Q7 connects the cathode of voltage-stabiliser tube D9, and the anode of voltage-stabiliser tube D9 connects electricity
Hinder R9, capacitor C3 one end, resistance R9, capacitor C3 another terminating resistor R4 one end, another termination triode of resistance R4
The emitter of Q5, resistance R10, resistance R11 another termination transport and placing device AR2 non-inverting input terminal, the anti-phase input of transport and placing device AR2
One end of terminating resistor R12, resistance R14, the other end ground connection of resistance R12, the output terminating resistor R14's of transport and placing device AR2 is another
One end.
Embodiment two, on the basis of example 1, the compensation output circuit is with power supply+10V through variable resistance RW2
Post-compensation transport and placing device AR2 output signal is divided, can change thermal compensation signal by adjusting variable resistance RW2 resistance value current potential size
Current potential, due to recommending analog signal when buffer circuit potential value is insufficient to compensate for the work of corrosive pipeline degree measuring instrument, fortune
It is the base current potential of transport and placing device AR2 output signal after variable resistance RW2 partial pressure with external power supply+10V, and utilization resistance R16,
It exports, is that is to say when compensation corrosive pipeline degree measuring instrument works after resistance R17 and capacitor C5, capacitor C6 composition RC circuit filtering
Analog signal, one end of a termination capacitor C5 of resistance R16 and the cathode of diode D12, the anode of diode D12 connects variable
The contact 2 of resistance RW2, the contact 1 of variable resistance RW2 connect the cathode of diode D11, the positive connecting resistance R15's of diode D11
One end, one end of another terminating resistor R13 of resistance R15 and the anode of diode D10, the contact 3 and two poles of variable resistance RW2
The cathode of pipe D10 is grounded, the other end ground connection of another termination power+10V of resistance R13, capacitor C5, the other end of resistance R16
One end of connecting resistance R17, capacitor C6, the other end ground connection of capacitor C6, another termination signal output port of resistance R17.
Implement three, on the basis of example 1, the frequency collection circuit selects the frequency collection of model SJ-ADC
Device J1 acquires the frequency analog signal when work of pipeline degree of corrosion measuring instrument, which is the control of corrosive pipeline degree measuring instrument
Low level signal is isolated with triode Q1, triode Q2 composition switching circuit in terminal received signal, when signal is low level
When, it is insufficient to allow triode Q2 to be connected, realizes the effect of isolation low level signal, the power supply termination capacitor of frequency collection device J1
One end of C1 and power supply+5V, the ground terminal ground connection of frequency collection device J1, the output termination capacitor C1's of frequency collection device J1 is another
Cathode, one end of resistance R1 and the collector of triode Q1, triode Q2 at end and voltage-stabiliser tube D1, the anode of voltage-stabiliser tube D1 connect
Ground, the other end of the base stage connecting resistance R1 of triode Q1 and the cathode of voltage-stabiliser tube D2, the plus earth of voltage-stabiliser tube D2, triode Q1
Emitter connect the base stage of triode Q2, the emitter of triode Q2 connects the anode of diode D3.
The present invention it is specifically used when, corrosive pipeline degree measuring instrument signal compensation circuit, including frequency collection circuit, recommend it is slow
Rush circuit and compensation output circuit, the analog signal frequency when frequency collection circuit acquisition pipeline degree of corrosion measuring instrument works
Rate, the analog signal are corrosive pipeline degree measuring instrument controlling terminal received signal, are opened with triode Q1, triode Q2 composition
Low level signal is isolated in powered-down road, and the buffer circuit of recommending is with triode Q3, triode Q4, triode Q5 and diode
The push-pull circuit of D4, diode D3 composition not only improves the load capacity of circuit to signal processing, but also improves switching speed, and
With transport and placing device AR1 with phase amplified signal, signal is directly inputted in transport and placing device AR2 non-inverting input terminal in order to prevent, with resistance
The buffer circuit of R8, capacitor C4 and triode Q6 composition makes signal gently input transport and placing device AR2 non-inverting input terminal signal buffer
It is interior, for further stable transport and placing device AR2 homophase input end signal, outputed signal to triode Q7 feedback transport and placing device AR1
Triode Q5 emitter, when transport and placing device AR1 output signal current potential is excessively high, triode Q7 is connected at this time, feedback signal to three poles
Pipe Q5 emitter, triode Q5 emitter potential increase, and that is to say that trigger triode Q4 base stage conducting potential drop is low, realize drop
The effect of the signal conduction value of low push-pull circuit, wherein resistance R9 and capacitor C3 is filter circuit, and last transport and placing device AR2 is same mutually to be put
After big signal in input offset output circuit, it is all the way transport and placing device AR1 that transport and placing device AR2 non-inverting input terminal, which is two paths of signals input,
Output signal current potential, another way are the signal after buffer circuit buffering, and transport and placing device AR2 plays the role of add circuit, last institute
It states compensation output circuit and divides post-compensation transport and placing device AR2 output signal through variable resistance RW2 with power supply+10V, and with electricity
It is exported after resistance R16, resistance R17 and capacitor C5, capacitor C6 composition RC circuit filtering, that is to say compensation corrosive pipeline degree measuring instrument work
Analog signal when making.
The above is that further detailed description of the invention, and it cannot be said that the present invention in conjunction with specific embodiment
Specific implementation is limited only to this；Belonging to the present invention and for those skilled in the technology concerned, it is being based on skill of the present invention
Under the premise of art scheme thinking, it is made expansion and operating method, data replacement, should all fall in the scope of the present invention it
It is interior.
Claims (3)
1. corrosive pipeline degree measuring instrument signal compensation circuit, including frequency collection circuit, recommend buffer circuit and compensation output electricity
Road, which is characterized in that the frequency analog signal when frequency collection circuit acquisition pipeline degree of corrosion measuring instrument work, the simulation
Signal be corrosive pipeline degree measuring instrument controlling terminal received signal, with triode Q1, triode Q2 composition switching circuit every
From low level signal, the buffer circuit of recommending is with triode Q3, triode Q4, triode Q5 and diode D4, diode
The push-pull circuit of D3 composition not only improves the load capacity of circuit to signal processing, but also improves switching speed, while using resistance
The buffer circuit of R8, capacitor C4 and triode Q6 composition is exported to signal buffer, and with triode Q7 feedback transport and placing device AR1
Signal adjusts the signal conduction value of push-pull circuit to triode Q5 emitter, and last transport and placing device AR2 after phase amplified signal the same as inputting
It compensates in output circuit, the last compensation output circuit divides post-compensation transport and placing device through variable resistance RW2 with power supply+10V
AR2 output signal, and with being exported after resistance R16, resistance R17 and capacitor C5, capacitor C6 composition RC circuit filtering, it that is to say
Compensate the analog signal when work of corrosive pipeline degree measuring instrument；
The buffer circuit of recommending includes diode D4, and the cathode of diode D4 connects the anode of diode D3, and diode D3's is negative
Pole connects the base stage of triode Q5, and the anode of diode D4 connects the base stage of triode Q3 and one end of resistance R2, the collection of triode Q3
Electrode connects the non-inverting input terminal of power supply+5V, the collector of one end of resistance R2 and triode Q4, transport and placing device AR1, triode Q4's
Base stage connects the emitter of triode Q3 and the collector of triode Q5, and the base stage of triode Q5 connects the cathode of diode D3, three poles
One end of the emitter connecting resistance R6 of pipe Q4, the other end ground connection of resistance R6, the anti-phase input terminating resistor R3 of transport and placing device AR1,
One end of resistance R5, the other end ground connection of resistance R3, the one of the output other end of terminating resistor R5 of transport and placing device AR1, resistance R7
End, one end of resistance R8 and the cathode of voltage-stabiliser tube D5, one end of capacitor C2, the anode of diode D6 and diode D7 are just
Pole, the collector of triode Q6, diode D8 cathode, capacitor C2 the other end ground connection, the other end and diode of resistance R8
The cathode of D7 connects one end of capacitor C4, the emitter and resistance of the anode of another terminating diode D8 of capacitor C4, triode Q6
One end of R10, the base stage of triode Q6 connect cathode and resistance R11, the other end of resistance R7 and triode Q7 of diode D6
Collector, the emitter of triode Q7 connects the cathode of voltage-stabiliser tube D9, the one of the positive connecting resistance R9 of voltage-stabiliser tube D9, capacitor C3
End, resistance R9, capacitor C3 another terminating resistor R4 one end, the emitter of another termination triode Q5 of resistance R4, resistance
The non-inverting input terminal of another termination transport and placing device AR2 of R10, resistance R11, anti-phase input terminating resistor R12, the electricity of transport and placing device AR2
Hinder one end of R14, the other end ground connection of resistance R12, the other end of the output terminating resistor R14 of transport and placing device AR2.
2. corrosive pipeline degree measuring instrument signal compensation circuit as described in claim 1, which is characterized in that the compensation output circuit
Including resistance R16, one end of a termination capacitor C5 of resistance R16 and the cathode of diode D12, the anode of diode D12 connects can
Power transformation hinders the contact 2 of RW2, and the contact 1 of variable resistance RW2 meets the cathode of diode D11, the positive connecting resistance R15 of diode D11
One end, one end of another terminating resistor R13 of resistance R15 and the anode of diode D10, the contact 3 of variable resistance RW2 and two
The cathode of pole pipe D10 is grounded, and the other end ground connection of another termination power+10V of resistance R13, capacitor C5, resistance R16's is another
One end of terminating resistor R17, capacitor C6, the other end ground connection of capacitor C6, another termination signal output port of resistance R17.
3. corrosive pipeline degree measuring instrument signal compensation circuit as described in claim 1, which is characterized in that the frequency collection circuit
One end of the power supply termination capacitor C1 of frequency collection device J1 including model SJ-ADC, frequency collection device J1 and power supply+5V, frequency
The ground terminal of rate collector J1 is grounded, the cathode of the other end of the output termination capacitor C1 of frequency collection device J1 and voltage-stabiliser tube D1,
One end of resistance R1 and the collector of triode Q1, triode Q2, the base stage of the plus earth of voltage-stabiliser tube D1, triode Q1 connect
The other end of resistance R1 and the cathode of voltage-stabiliser tube D2, the plus earth of voltage-stabiliser tube D2, the emitter of triode Q1 meet triode Q2
Base stage, the emitter of triode Q2 connects the anode of diode D3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811634495.8A CN109613201B (en) | 2018-12-29 | 2018-12-29 | Signal compensation circuit of pipeline corrosion degree measuring instrument |
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| CN201811634495.8A CN109613201B (en) | 2018-12-29 | 2018-12-29 | Signal compensation circuit of pipeline corrosion degree measuring instrument |
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| CN109889795A (en) * | 2019-04-17 | 2019-06-14 | 冯芊雅 | A kind of domestic video monitoring system |
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| CN110417433A (en) * | 2019-08-30 | 2019-11-05 | 黄河科技学院 | A kind of agricultural greenhouse data transmission system |
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| CN110417433A (en) * | 2019-08-30 | 2019-11-05 | 黄河科技学院 | A kind of agricultural greenhouse data transmission system |
| CN110971229A (en) * | 2019-12-26 | 2020-04-07 | 郑州科技学院 | Electronic signal calibration system |
| CN110968012A (en) * | 2019-12-26 | 2020-04-07 | 郑州科技学院 | Electronic signal compensation device |
| CN110971229B (en) * | 2019-12-26 | 2020-08-25 | 郑州科技学院 | Electronic signal calibration system |
| CN111245427A (en) * | 2020-01-14 | 2020-06-05 | 河北岳如信息科技有限公司 | Big data real-time monitoring system |
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| CN109613201B (en) | 2021-07-06 |
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