CN109309507A - One kind being based on big data power grid security management information system - Google Patents
One kind being based on big data power grid security management information system Download PDFInfo
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- CN109309507A CN109309507A CN201811452705.1A CN201811452705A CN109309507A CN 109309507 A CN109309507 A CN 109309507A CN 201811452705 A CN201811452705 A CN 201811452705A CN 109309507 A CN109309507 A CN 109309507A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
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Abstract
The invention discloses one kind to be based on big data power grid security management information system, small-signal in the received power grid big data transmission channel of codan, filtered out alien frequencies interference, inhibit electromagnetic interference, it eliminates after spike interference enters difference channel inhibition common mode interference and enters variable resistance amplifying circuit, pass through inductance L6, L7 and capacitor C9, the match circuit of C10 composition is connected to operational amplifier AR1 input terminal, carry out ratio enlargement, deviation is calculated using operational amplifier AR2, and through resistance R8, the match circuit of inductance L8 and capacitor C11 composition is parallel on the match circuit of operational amplifier AR1 input terminal, control the magnification ratio of operational amplifier AR1, it is most lossless after output matching circuit impedance matching afterwards will be interference-free, meet signal amplitude, stable signal It is transferred to the server of big data power grid security management information system.The problem of distorted signals, decaying in effective solution network information transfer channel cannot effectively be received by server.
Description
Technical field
The present invention relates to power grid security administrative skill fields, are believed more particularly to one kind based on the management of big data power grid security
Breath system.
Background technique
Big data power grid security management information system be a kind of depth integration calculate, the physics-of communication and control technology
Information system, including data collector, state detector, controller, communication equipment and the (service of high-performance calculation decision device
Device) etc. information equipments, receive operation of power networks parameter information real-time to the reliable of big data power grid security management information system
Property play key effect, when especially big data power grid security management information system receives magnanimity operation of power networks parameter information, by
The influence of the interference of the network transmission mode (optical fiber, GPRS etc.), transmission range and noise and other signals of big data communication,
It will lead to the distorted signals in the received network information transfer channel of server, decay, the problem of cannot effectively receiving.
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 one kind to be based on big data
Power grid security management information system, have be skillfully constructed, the characteristic of human oriented design, effective solution network information transfer letter
The problem of distorted signals, decaying in road cannot effectively be received by server.
Its technical solution solved is, including codan, variable resistance amplifying circuit, output matching circuit, feature
It is, the small-signal in the received power grid big data transmission channel of codan, through capacitor C1, C 2, CP1 and inductance
The bandpass filter of L1-L3 composition filters out alien frequencies interference, Transient Suppression Diode VD1 inhibits electromagnetic interference, the thyristor VTL1 to be
The spike release circuit of core, which is eliminated in homogenous frequency signal, enters triode Q1 and triode Q2 after spike interference for core
The difference channel of the heart enters variable resistance amplifying circuit after inhibiting common mode interference, and the variable resistance amplifying circuit passes through inductance L6, L7 and electricity
The match circuit for holding C9, C10 composition is connected to operational amplifier AR2 input terminal, ratio enlargement is carried out, using operational amplifier
AR2 calculates the deviation of ratio enlargement signal amplitude, the matching electricity that deviation is formed through resistance R8, inductance L8 and capacitor C11
Road is equivalent to a resistance, is parallel on the match circuit of operational amplifier AR1 input terminal, controls operational amplifier AR1 with this
Magnification ratio, finally enter output matching circuit, be transferred to zero-decrement signal greatly after pressure stabilizing, filtering, impedance matching
The server of data power grid security management information system；
The output matching circuit includes voltage-stabiliser tube Z4, inductance L9, and the cathode of voltage-stabiliser tube Z4 connects variable resistance with the left end of inductance L9
The output signal of amplifying circuit, the right end of inductance L9 are separately connected the left end of inductance L10, one end of capacitor C15, capacitor C16
One end, the right end of inductance L10 are separately connected the upper end of the other end of capacitor C15, resistance R13, and the lower end of resistance R13 connects inductance
The right end of L11, the anode of voltage-stabiliser tube Z4, the other end of capacitor C16, inductance L11 left end be all connected with ground, the right end of inductance L10
For the output signal of output matching circuit, it is transferred to the server of big data power grid security management information system.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art；
1, the small-signal in received power grid big data transmission channel filters out alien frequencies interference through bandpass filter, transient state inhibits two
Pole pipe VD1 inhibits electromagnetic interference, and spike release circuit eliminates spike interference in homogenous frequency signal, enters triode Q1 afterwards
Be the difference channel of core with triode Q2, exported after inhibiting common mode interference and temperature drift to late-class circuit, avoid because of noise and
The influence of the interference of other signals, caused by distorted signals in network information transfer channel the problem of, improve signal reception
Precision；
2, operational amplifier AR2 input terminal is connected to by the match circuit that inductance L6, L7 and capacitor C9, C10 are formed, is compared
Example amplification, the deviation of ratio enlargement signal amplitude is calculated using operational amplifier AR2, deviation is through resistance R8, inductance L8
It is equivalent to a resistance with the match circuit of capacitor C11 composition, is parallel on the match circuit of operational amplifier AR1 input terminal,
The magnification ratio that operational amplifier AR1 is controlled with this compensates for the problem of signal is decayed in transmission, most afterwards through pressure stabilizing, filter
It is lossless after wave, impedance matching that signal interference-free, that meet signal amplitude, stable is transferred to big data power grid security
The server of management information system.
Detailed description of the invention
Fig. 1 is circuit module figure of the invention.
Fig. 2 is circuit diagram of the invention.
Fig. 3 is codan signal flow figure of the invention.
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.
Each exemplary embodiment of the invention is described below with reference to accompanying drawings.
Embodiment one, one kind being based on big data power grid security management information system, and the received power grid of codan is big
Small-signal in data transmission channel is formed through capacitor C1, capacitor C2, inductance L1 and inductance L2, inductance L3, capacitor CP1
Bandpass filter filter out alien frequencies interference, after through Transient Suppression Diode VD1 inhibit electromagnetic interference to rear class transmit, resistance R1,
It is dry that the spike release circuit that capacitor C3-C5, thyristor VTL1, voltage-stabiliser tube Z1 are formed eliminates spike in homogenous frequency signal
It disturbs, is the difference channel of core into triode Q1 and triode Q2, is exported after inhibiting common mode interference and temperature drift, be provided with electricity
The output signal of the bleeder circuit acquisition difference channel of R4 and resistance R5 composition is hindered, when difference channel imbalance, voltage division signal adds
To the base stage of triode Q3, pressure difference is formed with the difference channel input signal of triode Q3 emitter access, triode Q3 is connected,
Potentiometer RW1 is adjustable to be terminated and returns to zero into difference channel input signal, inductance L2, resistance R2, capacitor C7 and inductance L5, electricity
The noise filter circuit that R3, capacitor C8 are power supply+5V is hindered, provides stable quiescent point for triode Q1 and triode Q2,
The variable resistance amplifying circuit is by inductance L6, L7 and capacitor C9, C10 match circuit formed and receives codan output
The output internal resistance of signal is matched, zero-decrement acquisition codan output signal, and is connected to as input resistance
Operational amplifier AR2 input terminal, the same phase through operational amplifier AR2, resistance R6, resistance R7, Transient Suppression Diode VD1 composition
Scaling circuit exports after carrying out ratio enlargement, wants to guarantee that amplified signal amplitude meets server to signal amplitude
It asks, signal enters the non-inverting input terminal of operational amplifier AR2 after capacitor C14 filtering, resistance R11 current limliting after ratio enlargement, with
The master output signal of inverting input terminal input carries out difference ratio operation, calculates deviation, deviation is through resistance R8, inductance
The match circuit of L8 and capacitor C11 composition is equivalent to a resistance, is parallel to the match circuit of operational amplifier AR1 input terminal
On, the magnification ratio of operational amplifier AR1 is controlled with this, and then control the precision of the amplitude of amplified signal, it is ensured that variable resistance amplification
Circuit amplified signal meets requirement of the server to signal amplitude, finally enters output matching circuit, through voltage-stabiliser tube Z4 pressure stabilizing,
The LC filter circuit filtering of inductance L9 and capacitor C16 composition, capacitor C16, inductance L10 and capacitor C15, concatenated resistance in parallel
The transmission line that the π type output matching network of R13 and inductance L11 composition is connect with server carries out impedance matching, and lossless will not
Signal be disturbed, meeting signal amplitude, stable is transferred to the server of big data power grid security management information system；
The output matching circuit receives variable resistance amplifying circuit output signal, through voltage-stabiliser tube Z4 pressure stabilizing, inductance L9 and capacitor C16 group
At the filtering of LC filter circuit, capacitor C16, inductance L10 in parallel and capacitor C15, concatenated resistance R13 and inductance L11 composition
The transmission line that is connect with server of π type output matching network carry out impedance matching, it is lossless by it is interference-free, meet signal
Amplitude, stable signal is transferred to the server of big data power grid security management information system, including voltage-stabiliser tube Z4, inductance
L9, the cathode of voltage-stabiliser tube Z4 connect the output signal of variable resistance amplifying circuit with the left end of inductance L9, and the right end of inductance L9 connects respectively
Connect the left end of inductance L10, one end of capacitor C15, capacitor C16 one end, the right end of inductance L10 is separately connected the another of capacitor C15
One end, resistance R13 upper end, the right end of the lower end connection inductance L11 of resistance R13, the anode of voltage-stabiliser tube Z4, capacitor C16 it is another
One end, inductance L11 left end be all connected with ground, the right end of inductance L10 is the output signal of output matching circuit, is transferred to big data
The server of power grid security management information system.
Embodiment two, on the basis of example 1, the variable resistance amplifying circuit pass through inductance L6, L7 and capacitor C9, C10
The match circuit of composition is matched with the output internal resistance for receiving codan output signal, zero-decrement acquisition interference suppression
Circuit output signal processed, and it is connected to operational amplifier AR2 input terminal as input resistance, through operational amplifier AR2, resistance
The in-phase proportion amplifying circuit that R6, resistance R7, Transient Suppression Diode VD1 are formed exports after carrying out ratio enlargement, wherein resistance
R7 is feedback resistance, Transient Suppression Diode VD1 is to inhibit spike noise setting, in order to guarantee that amplified signal amplitude is full
Requirement of the sufficient server to signal amplitude, signal is put after capacitor C14 filtering, resistance R11 current limliting into operation after ratio enlargement
The non-inverting input terminal of big device AR2 carries out difference ratio operation with the master output signal of inverting input terminal input, and calculating deviates
Value, the match circuit that deviation is formed through resistance R8, inductance L8 and capacitor C11 are equivalent to a resistance, are parallel to operation amplifier
On the match circuit of device AR1 input terminal, the magnification ratio of operational amplifier AR1 is controlled with this, and then control the width of amplified signal
The precision of degree, it is ensured that variable resistance amplifying circuit amplified signal meets requirement of the server to signal amplitude, including inductance L6 and electricity
Hold C9, the collector of one end connecting triode Q1 of the left end and ground capacity C9 of inductance L6, the right end of inductance L6 is separately connected
One end of ground capacity C10, inductance L7 left end, the right end of inductance L7 be separately connected operational amplifier AR1 non-inverting input terminal,
One end of resistance R7, Transient Suppression Diode VD1 one end, the inverting input terminal of operational amplifier AR1 is separately connected ground connection electricity
One end of R6, the collector of triode Q2 are hindered, the output end of operational amplifier AR1 is separately connected the other end of resistance R7, transient state
Inhibit one end of the other end of diode VD1, one end of resistance R11, ground capacity C14, the other end of resistance R11 connects operation
The non-inverting input terminal of amplifier AR2, the inverting input terminal of operational amplifier AR2 are separately connected one end of resistance R10, resistance R12
One end, the other end of resistance R12 connects master output signal, and the other end of resistance R10 is separately connected operational amplifier AR2's
The anode of output end, capacitor C13, the cathode of capacitor C13 are separately connected one end of capacitor C12, one end of ground resistance R9, resistance
One end of R8, one end of inductance L8, operational amplifier AR1 non-inverting input terminal, the other end of resistance R8, inductance L8 it is another
End, the positive of capacitor C11 connect power supply+5V, and the cathode of capacitor C11 connects ground, a left side of the other end connection inductance L6 of capacitor C12
End.
Embodiment three, on the basis of example 2, the received power grid big data transmission channel of codan
Interior small-signal, the bandpass filter through capacitor C1, capacitor C2, inductance L1 and inductance L2, inductance L3, capacitor CP1 composition are filtered
Except alien frequencies interferes, high-pass filtering circuit series inductance L2, inductance L3, capacitor that specific capacitor C1, capacitor C2, inductance L1 are formed
The low-pass filter circuit of CP1 composition constitutes bandpass filter, only allows the frequency of the small-signal in power grid big data transmission channel
Rate component passes through, other frequency components is prevented to pass through, adjust any inductance, capacitance it is adjustable allow by frequency component model
Enclose, filtered out interference signal, improve anti-interference ability, after inhibit electromagnetic interference to rear class through Transient Suppression Diode VD1
Transmission, the spike release circuit that resistance R1, capacitor C3-C5, thyristor VTL1, voltage-stabiliser tube Z1 are formed are eliminated in homogenous frequency signal
Spike interference (specifically when there is abnormal spike interference, voltage-stabiliser tube Z1 breakdown, thyristor VTL1 conducting, spike
Impulse disturbances are discharged into the earth through capacitor C3, the anode and cathode of thyristor VTL1, capacitor C5) after, into triode Q1 and three
Pole pipe Q2 is the difference channel of core, is exported after inhibiting common mode interference and temperature drift, and resistance R4 and resistance R5 composition is provided with
Bleeder circuit acquires the output signal of difference channel, and when difference channel imbalance, voltage division signal is added to the base stage of triode Q3, with
Triode Q3 emitter access difference channel input signal formed pressure difference, triode Q3 conducting, potentiometer RW1 is adjustable terminate into
Difference channel input signal returns to zero, inductance L2, resistance R2, capacitor C7 and inductance L5, resistance R3, capacitor C8 be power supply+
The noise filter circuit of 5V provides stable quiescent point, including capacitor C1 for triode Q1 and triode Q2, capacitor C1's
Cathode receives the small-signal in power grid big data transmission channel, and the anode of capacitor C1 is separately connected one end of inductance L1, capacitor
The cathode of C2, capacitor C2 anode connection inductance L2 one end, the other end of inductance L2 be separately connected inductance L3 one end,
One end of capacitor CP1, the other end of inductance L3 are separately connected one end of Transient Suppression Diode VD1, one end of resistance R1, electricity
Hold the base stage of one end of C3, triode Q1, the other end of inductance L1, the other end of capacitor CP1, Transient Suppression Diode VD1
The other end is all connected with the base stage of triode Q2, the anode of the other end connection thyristor VTL1 of capacitor C3, the other end of resistance R1
The cathode of voltage-stabiliser tube Z1 is connected, the anode of voltage-stabiliser tube Z1 is separately connected the control electrode of one end of capacitor C4, thyristor VTL1, capacitor
The other end of C4 is separately connected one end of the cathode of thyristor VTL1, capacitor C5, and the other end of capacitor C5 connects ground, triode
The collector of Q1 connects one end of one end of capacitor C7, inductance L4, one end of the other end connection resistance R2 of capacitor C7, triode
The collector of Q2 connects one end of one end of capacitor C8, inductance L5, one end of the other end connection resistance R3 of capacitor C8, resistance R2
The other end, the other end of resistance R3, the other end of inductance L4, inductance L5 the other end be all connected with power supply+5V, triode Q1's
Collector is also connected with one end of resistance R4, and resistance R4's is separately separately connected one end of ground resistance R5, the base stage of triode Q3, and three
The adjustable end of the collector connection potentiometer RW1 of pole pipe Q3, the emitter of the left end connecting triode Q1 of potentiometer RW1, current potential
The emitter of the right end connecting triode Q2 of device RW1, triode Q3 emitter connect one end of capacitor C6, the other end of capacitor C6
Connecting triode Q3 base stage.
When the present invention is specifically used, small-signal in the received power grid big data transmission channel of codan, warp
The bandpass filter that capacitor C1, capacitor C2, inductance L1 and inductance L2, inductance L3, capacitor CP1 are formed filters out alien frequencies interference, specifically
Capacitor C1, capacitor C2, inductance L1 composition high-pass filtering circuit series inductance L2, inductance L3, capacitor CP1 composition low pass filtered
Wave circuit constitutes bandpass filter, only the frequency component of the small-signal in power grid big data transmission channel is allowed to pass through, and prevents
Other frequency components pass through, adjust any inductance, capacitance it is adjustable allow by range of frequency components, filtered out interference letter
Number, improve anti-interference ability, after through Transient Suppression Diode VD1 inhibit electromagnetic interference to rear class transmit, resistance R1, capacitor
The spike release circuit that C3-C5, thyristor VTL1, voltage-stabiliser tube Z1 are formed eliminates spike interference (tool in homogenous frequency signal
Body when there is abnormal spike interference, voltage-stabiliser tube Z1 breakdown, thyristor VTL1 conducting, spike are interfered through capacitor
C3, the anode and cathode of thyristor VTL1, capacitor C5 are discharged into the earth) after, it is core into triode Q1 and triode Q2
Difference channel exports after inhibiting common mode interference and temperature drift, and the bleeder circuit acquisition for being provided with resistance R4 and resistance R5 composition is poor
The output signal of parallel circuit, when difference channel imbalance, voltage division signal is added to the base stage of triode Q3, with triode Q3 emitter
The difference channel input signal of access forms pressure difference, and triode Q3 conducting, potentiometer RW1 is adjustable to be terminated into difference channel input letter
It number returns to zero, inductance L2, resistance R2, capacitor C7 and inductance L5, resistance R3, the noise filtering electricity that capacitor C8 is power supply+5V
Road provides stable quiescent point for triode Q1 and triode Q2, and variable resistance amplifying circuit passes through inductance L6, L7 and capacitor
The match circuit of C9, C10 composition is matched with the output internal resistance for receiving codan output signal, zero-decrement acquisition
Codan output signal, and be connected to operational amplifier AR2 input terminal as input resistance, through operational amplifier AR2,
The in-phase proportion amplifying circuit that resistance R6, resistance R7, Transient Suppression Diode VD1 are formed exports after carrying out ratio enlargement, wherein
Resistance R7 is feedback resistance, Transient Suppression Diode VD1 is to inhibit spike noise setting, in order to guarantee amplified signal width
Degree meets requirement of the server to signal amplitude, and signal enters fortune after capacitor C14 filtering, resistance R11 current limliting after ratio enlargement
The non-inverting input terminal for calculating amplifier AR2 carries out difference ratio operation with the master output signal of inverting input terminal input, calculates
Deviation, the match circuit that deviation is formed through resistance R8, inductance L8 and capacitor C11 are equivalent to a resistance, are parallel to operation
On the match circuit of amplifier AR1 input terminal, the magnification ratio of operational amplifier AR1 is controlled with this, and then control amplified signal
Amplitude precision, it is ensured that variable resistance amplifying circuit amplified signal meets requirement of the server to signal amplitude, finally enters defeated
Match circuit out, through voltage-stabiliser tube Z4 pressure stabilizing, the LC filter circuit filtering of inductance L9 and capacitor C16 composition is capacitor C16, in parallel
The biography that the π type output matching network of inductance L10 and capacitor C15, concatenated resistance R13 and inductance L11 composition is connect with server
Defeated line carries out impedance matching, lossless that signal interference-free, that meet signal amplitude, stable is transferred to big data power grid
The server of Safeguard Management Information System.
Claims (3)
1. one kind is based on big data power grid security management information system, including codan, variable resistance amplifying circuit, output
With circuit, which is characterized in that the small-signal in the received power grid big data transmission channel of codan, through capacitor C1, C
2, the bandpass filter of CP1 and inductance L1-L3 composition filters out alien frequencies interference, Transient Suppression Diode VD1 inhibits electromagnetic interference, crystalline substance
Brake tube VTL1 is to enter triode Q1 and three after spike interference in the spike release circuit elimination homogenous frequency signal of core
Pole pipe Q2 is the difference channel of core, enters variable resistance amplifying circuit after inhibiting common mode interference, the variable resistance amplifying circuit passes through electricity
The match circuit of sense L6, L7 and capacitor C9, C10 composition is connected to operational amplifier AR1 input terminal, carries out ratio enlargement, application
Operational amplifier AR2 calculates the deviation of ratio enlargement signal amplitude, and deviation is through resistance R8, inductance L8 and capacitor C11 group
At match circuit be equivalent to a resistance, be parallel on the match circuit of operational amplifier AR1 input terminal, operation controlled with this
The magnification ratio of amplifier AR1, finally enters output matching circuit, by zero-decrement signal after pressure stabilizing, filtering, impedance matching
It is transferred to the server of big data power grid security management information system；
The output matching circuit includes voltage-stabiliser tube Z4, inductance L9, and the cathode of voltage-stabiliser tube Z4 connects variable resistance with the left end of inductance L9
The output signal of amplifying circuit, the right end of inductance L9 are separately connected the left end of inductance L10, one end of capacitor C15, capacitor C16
One end, the right end of inductance L10 are separately connected the upper end of the other end of capacitor C15, resistance R13, and the lower end of resistance R13 connects inductance
The right end of L11, the anode of voltage-stabiliser tube Z4, the other end of capacitor C16, inductance L11 left end be all connected with ground, the right end of inductance L10
For the output signal of output matching circuit, it is transferred to the server of big data power grid security management information system.
2. a kind of as described in claim 1 be based on big data power grid security management information system, which is characterized in that the variable resistance is put
Big circuit includes inductance L6 and capacitor C9, the collector of one end connecting triode Q1 of the left end and ground capacity C9 of inductance L6,
The right end of inductance L6 is separately connected the left end of one end of ground capacity C10, inductance L7, and the right end of inductance L7 is separately connected operation and puts
The non-inverting input terminal of big device AR1, one end of resistance R7, Transient Suppression Diode VD1 one end, the reverse phase of operational amplifier AR1
Input terminal is separately connected the collector of one end of ground resistance R6, triode Q2, and the output end of operational amplifier AR1 is separately connected
The other end of resistance R7, the other end of Transient Suppression Diode VD1, one end of resistance R11, ground capacity C14 one end, resistance
The non-inverting input terminal of the other end connection operational amplifier AR2 of R11, the inverting input terminal of operational amplifier AR2 are separately connected electricity
One end of R10, one end of resistance R12 are hindered, the other end of resistance R12 connects master output signal, the other end difference of resistance R10
The output end of operational amplifier AR2, the anode of capacitor C13 are connected, the cathode of capacitor C13 is separately connected one end of capacitor C12, connects
One end of ground resistance R9, one end of resistance R8, one end of inductance L8, operational amplifier AR1 non-inverting input terminal, resistance R8's is another
One end, the other end of inductance L8, the positive of capacitor C11 connect power supply+5V, and the cathode of capacitor C11 connects ground, and capacitor C12's is another
The left end of one end connection inductance L6.
3. a kind of as described in claim 1 be based on big data power grid security management information system, which is characterized in that the interference suppression
Circuit processed includes capacitor C1, and the cathode of capacitor C1 receives the small-signal in power grid big data transmission channel, the anode of capacitor C1
It is separately connected one end of inductance L1, the cathode of capacitor C2, one end of the anode connection inductance L2 of capacitor C2, inductance L2's is another
One end is separately connected one end of one end of inductance L3, capacitor CP1, and the other end of inductance L3 is separately connected Transient Suppression Diode
One end of VD1, one end of resistance R1, one end of capacitor C3, triode Q1 base stage, the other end of inductance L1, capacitor CP1
The other end, Transient Suppression Diode VD1 the other end be all connected with the base stage of triode Q2, the other end of capacitor C3 connects thyristor
The anode of VTL1, the cathode of the other end connection voltage-stabiliser tube Z1 of resistance R1, the anode of voltage-stabiliser tube Z1 are separately connected the one of capacitor C4
It holds, the control electrode of thyristor VTL1, the other end of capacitor C4 is separately connected one end of the cathode of thyristor VTL1, capacitor C5, electricity
The other end for holding C5 connects ground, and the collector of triode Q1 connects one end of one end of capacitor C7, inductance L4, and capacitor C7's is another
One end of end connection resistance R2, the collector of triode Q2 connect one end of one end of capacitor C8, inductance L5, and capacitor C8's is another
End connection resistance R3 one end, the other end of resistance R2, the other end of resistance R3, the other end of inductance L4, inductance L5 it is another
End is all connected with power supply+5V, and the collector of triode Q1 is also connected with one end of resistance R4, and the other end of resistance R4 is separately connected ground connection
One end of resistance R5, triode Q3 base stage, the adjustable end of the collector connection potentiometer RW1 of triode Q3, potentiometer RW1's
The emitter of left end connecting triode Q1, the emitter of the right end connecting triode Q2 of potentiometer RW1, triode Q3 emitter connect
Connect one end of capacitor C6, the other end connecting triode Q3 base stage of capacitor C6.
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| CN103840800A (en) * | 2014-03-21 | 2014-06-04 | 航天科技控股集团股份有限公司 | Vehicle speed input collection circuit |
| CN104482945A (en) * | 2014-12-17 | 2015-04-01 | 许继集团有限公司 | Overvoltage protection and signal conditioning system for sensor |
| CN105631989A (en) * | 2015-12-19 | 2016-06-01 | 成都卡诺源科技有限公司 | Filter amplification circuit based voice recognition door control system |
| CN108664074A (en) * | 2018-07-03 | 2018-10-16 | 许少辉 | System is monitored based on Internet of Things hospital environment |
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| CN109309507B (en) | 2020-06-30 |
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