CN106067802A - Microwave isolation solid-state relay and operation method thereof - Google Patents
Microwave isolation solid-state relay and operation method thereof Download PDFInfo
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- CN106067802A CN106067802A CN201610481505.3A CN201610481505A CN106067802A CN 106067802 A CN106067802 A CN 106067802A CN 201610481505 A CN201610481505 A CN 201610481505A CN 106067802 A CN106067802 A CN 106067802A
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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
- H03K19/003—Modifications for increasing the reliability for protection
- H03K19/00346—Modifications for eliminating interference or parasitic voltages or currents
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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
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Abstract
The open a kind of microwave isolation solid-state relay of the present invention and operation method thereof, be made up of at least one road microwave isolation relay unit；Every road microwave isolation relay unit includes input circuit and output circuit, wherein realizes electrical isolation by microwave mode between input circuit and output circuit.The present invention uses microwave transmission mode to complete the electrical isolation between input signal and output signal, it is possible to increase the reliability of solid-state relay, safety, is lifted at the capacity of resisting disturbance under the conditions of bad electromagnetic and radiation environment；There is the features such as capacity of resisting disturbance is strong, functional reliability is high, good, the small in volume of safety.
Description
Technical field
The present invention relates to relay technical field, be specifically related to a kind of microwave isolation solid-state relay and operation method thereof.
Background technology
Electric isolation type solid-state relay, as the vitals of military control system, directly influences whole armament systems
Survival ability and the performance of fighting capacity, under the conditions of various bad electromagnetic and radiation environment, it is desirable to reliably work；Meanwhile,
Due to the development trend of weapon model miniaturization, piece volumes miniaturization is had higher requirement.But, traditional solid-state
Relay all uses Phototube Coupling mode or transformator Magnetic isolation mode, and volume is relatively big, is tackling following worse electromagnetism
All there is unsafe factor in environment and radiation environment.
Summary of the invention
The solid-state relay that the technical problem to be solved is traditional exists volume, and relatively greatly and reliability is the best
Problem, it is provided that a kind of microwave isolation solid-state relay and operation method thereof.
For solving the problems referred to above, the present invention is achieved by the following technical solutions:
A kind of microwave isolation solid-state relay, including relay body, described relay body by least one road microwave every
Constitute from relay unit；Every road microwave isolation relay unit includes input circuit and output circuit, wherein input circuit and output
Electrical isolation is realized by microwave mode between circuit.
In such scheme, microwave isolation relay unit in every road includes low pass filter, threshold circuit, microwave signal source, tune
Device processed and power amplifier, demodulator, rectification multiple pressuring circuit, power tube drive circuit, power tube and microstrip coupled antenna；Wherein
Microstrip coupled antenna includes transmitting terminal antenna and receiving terminal antenna.The input termination external input control signal of low pass filter；
The outfan of low pass filter is connected with the input of threshold circuit；The control end phase of the outfan of threshold circuit and manipulator
Even, the outfan of microwave signal source is connected with the input of manipulator；The outfan of manipulator and the input of power amplifier
It is connected；The outfan of power amplifier is connected with the transmitting terminal antenna of microstrip coupled antenna.The receiving terminal sky of microstrip coupled antenna
Line is connected with the input of demodulator；The outfan of demodulator is connected with the input of rectification multiple pressuring circuit；Rectification multiple pressuring circuit
Outfan be connected with the input of power tube drive circuit；The control end phase of the outfan of power tube drive circuit and power tube
Even；The outfan of power tube is to outside output drive signal.
In such scheme, low pass filter includes resistance R1, electric capacity C1, C2, and operational amplifier U1；The one of resistance R1
Hold the input as low pass filter, be connected with external input control signal；Resistance R1 and electric capacity C1 contacts, the midpoint of series winding
It is connected with the positive input terminal of operational amplifier U1；Hold the other end of electric capacity C1 and input circuit and be connected；The two ends of electric capacity C2 are divided
Not end positive and negative with the power supply of operational amplifier U1 is connected；The negative input end of operational amplifier U1 and the output of operational amplifier U1
End is connected；The outfan of operational amplifier U1 is as the outfan of low pass filter.
In such scheme, threshold circuit includes resistance R2-R7, electric capacity C3, and audion VT1, VT2；Audion VT1's
Base stage is as the input of threshold circuit；The base stage of one end connecting triode VT1 of resistance R2, the other end connects input circuit ground
End；The emitter stage of resistance R4 one end connecting triode VT1, the other end connects input circuit ground end；Resistance R3 one end connects three poles
The colelctor electrode of pipe VT1, the other end connects input circuit power positive end VCC；Resistance R5 is in parallel with electric capacity C3, and the one end after parallel connection is even
Connect the colelctor electrode of audion VT1, the base stage of the other end connecting triode VT2 after parallel connection；Resistance R6 one end connecting triode VT2
Base stage, the other end connect input circuit ground end；The colelctor electrode of resistance R7 one end connecting triode VT2, the other end connects input
Circuit power anode VCC；The emitter stage of audion VT1 is connected with the emitter stage of audion VT2；The colelctor electrode of audion VT2 is made
Outfan for threshold circuit.
In such scheme, power amplifier includes resistance R8-R12, electric capacity C4, operational amplifier U2, and microwave power
Audion VT3；One end of resistance R8 is as the input of power amplifier, the negative input of other end concatenation operation amplifier U2
End；The positive input terminal of one end concatenation operation amplifier U2 of resistance R9, the other end connects input circuit ground end；The one of resistance R10
The negative input end of end concatenation operation amplifier U2, the outfan of other end concatenation operation amplifier U2；Electric capacity C4 concatenation operation is put
The positive and negative power end of big device U2；The outfan of one end concatenation operation amplifier U2 of resistance R11, the other end connects microwave power
The base stage of audion VT3；The two ends of resistance R12 connect base stage and the emitter stage of microwave power audion VT3 respectively；Microwave power
The colelctor electrode of audion VT3 is as the outfan of power amplifier.
In such scheme, rectification multiple pressuring circuit includes electric capacity C5-C10, and double diode VD1-VD3；The one of electric capacity C5
Holding the input as rectification multiple pressuring circuit, the other end connects the 3rd end of double diode VD1；The two ends of electric capacity C7 connect respectively
3rd end of double diode VD1, VD2；The two ends of electric capacity C9 connect the 3rd end of double diode VD2, VD3 respectively；Electric capacity C6's
Two ends connect first and second end of double diode VD1 respectively；The two ends of electric capacity C8 connect the first and second of double diode VD2 respectively
End；The two ends of electric capacity C10 connect first and second end of double diode VD3 respectively；First end of double diode VD1 connects output electricity
Ground, road end；Second end of double diode VD1 is connected with first end of double diode VD2；Second end of double diode VD2 and double two
First end of pole pipe VD3 is connected；Second end of double diode VD3 is as the outfan of rectification multiple pressuring circuit.
In such scheme, power tube drive circuit includes resistance R13-R17, electric capacity C11, operational amplifier U3, Yi Jiwen
Pressure pipe VD4；One end of resistance R13 is as the input of power tube drive circuit, and other end concatenation operation amplifier U3's is negative defeated
Enter end；The positive input terminal of one end concatenation operation amplifier U3 of resistance R14, the other end connects output circuit ground end；Resistance R15's
The negative input end of one end concatenation operation amplifier U3, the outfan of other end concatenation operation amplifier U3；The two ends of electric capacity C11 are divided
The positive and negative power end of other concatenation operation amplifier U3；Resistance R17 is in parallel with stabilivolt VD4；The anode of stabilivolt VD4 connects defeated
Holding with going out circuit, the outfan of one end concatenation operation amplifier U3 of resistance R16, the other end of resistance R16 is with stabilivolt VD4's
Negative terminal is as the outfan of power tube drive circuit.
In such scheme, power tube is field effect transistor, single audion and/or Darlington transistor.
When microwave isolation relay unit is more than 2 tunnels, between every road microwave isolation relay unit, use different carrier waves
Frequency, to prevent from interfering.
The operation method of above-mentioned microwave isolation solid-state relay, comprises the steps:
The control signal of outside input introduces the input of low pass filter, by low pass filter, signal is carried out low pass
Filtering, removes the High-frequency Interference in control signal；
Removing the control signal after High-frequency Interference and introduce the input of threshold circuit, threshold circuit carries out shaping to signal,
Form digital square-wave, and add voltage window hesitation, it is to avoid on critical voltage point, form vibration；
Control signal after shaping introduces the control end of manipulator after filtering, to control the output of manipulator；
Microwave signal source is for producing the microwave signal of characteristic frequency, and the input of manipulator is arrived in output；
The microwave signal that microwave signal source is inputted by manipulator is as high-frequency carrier signal, to the control inputted by threshold circuit
Signal processed is modulated, and produces high frequency modulated ripple；
High frequency modulated ripple is incorporated into the input of power amplifier, and power amplifier completes the power of high frequency modulated ripple and puts
Greatly, the transmitting terminal antenna of the microstrip coupled antenna of subordinate is driven；
The transmitting terminal antenna of microstrip coupled antenna carries out the isolation of high frequency modulated ripple and sends；The receiving terminal of microstrip coupled antenna
Antenna has been used for receiving the transmitting terminal antenna of microstrip coupled antenna and has sent the high frequency modulated ripple of coming；
The high frequency modulated ripple received is completed signal demodulation by demodulator, restores effective control signal；
The rectification multiple pressuring circuit control signal to restoring carries out rectifying and wave-filtering, then by voltage-multiplying circuit to rectifying and wave-filtering
The low-voltage signal obtained carries out boosting process, produces satisfactory high level signal；
The signal that prime is inputted by power tube drive circuit carries out power amplification, produces satisfactory power tube and drives letter
Number, drive power tube action；
Power tube output signal, drives output loading.
Compared with prior art, what the present invention used that microwave transmission mode completes between input signal and output signal is electric
Isolation, it is possible to increase the reliability of solid-state relay, safety, be lifted under the conditions of bad electromagnetic and radiation environment is anti-interference
Ability；There is the features such as capacity of resisting disturbance is strong, functional reliability is high, good, the small in volume of safety.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of single channel microwave isolation solid-state relay.
Fig. 2 is the circuit theory diagrams of a kind of multichannel microwave isolation solid-state relay.
Fig. 3 is the schematic diagram of input circuit.
Fig. 4 is the schematic diagram of output circuit.
Detailed description of the invention
Embodiment 1:
A kind of single pass microwave isolation solid-state relay, as it is shown in figure 1, include shell and arrange 1 in the enclosure
Road microwave isolation relay unit.Above-mentioned microwave isolation relay unit is mainly by low pass filter, schmidt trigger threshold circuit, micro-
Ripple signal source, manipulator, power amplifier, microstrip coupled antenna, demodulator, rectification multiple pressuring circuit, power tube drive circuit and
Power tube forms.The input of low pass filter is connected with external input control signal；The outfan of low pass filter with execute close
The special input triggering threshold circuit is connected；The outfan of schmidt trigger threshold circuit is connected with the control end of manipulator, micro-
The outfan of ripple signal source is connected with the input of manipulator；The outfan of manipulator is connected with the input of power amplifier；
The outfan of power amplifier is connected with the transmitting terminal antenna of microstrip coupled antenna；The receiving terminal antenna of microstrip coupled antenna and solution
The input adjusting device is connected；The outfan of demodulator is connected with the input of rectification multiple pressuring circuit；The output of rectification multiple pressuring circuit
End is connected with the input of power tube drive circuit；The outfan of power tube drive circuit is connected with the control end of power tube；Merit
The outfan of rate pipe to outside output through power amplification and with input signal isolation signal, to drive output loading.
1, input circuit
As it is shown on figure 3, low pass filter, schmidt trigger threshold circuit, microwave signal source, manipulator and power amplifier
Form the input circuit part of microwave isolation solid-state relay, complete the filter shape of input signal, modulation and power amplification.
1-1, low pass filter
Low pass filter includes resistance R1, electric capacity C1, C2, integrated operational amplifier U1.One end of resistance R1 is as low pass
The input of wave filter, is connected with external input control signal；Resistance R1 and electric capacity C1 contacts, the midpoint of series winding and integrated computation
The positive input terminal of amplifier U1 is connected；Hold the other end of electric capacity C1 and input circuit and be connected；The two ends of electric capacity C2 respectively with collection
The positive and negative end of power supply becoming operational amplifier U1 is connected；The negative input end of integrated operational amplifier U1 is connected with outfan；Integrated fortune
Calculate the outfan outfan as low pass filter of amplifier U1.
External control signal introduces the input of low pass filter, resistance R1 and electric capacity C1 by input connector or pin
Composition RC low-pass filter circuit, carries out low-pass filtering by low-pass filter circuit to input control signal, removes in control signal
High-frequency Interference, prevent disturb signal cause circuit erroneous action；By the control signal after RC low-pass filtering, introduce integrated computation
The positive input terminal of amplifier U1, is completed the Hyblid Buffer Amplifier of signal by integrated operational amplifier U1, improves the driving force of signal, and
Output is to subordinate's circuit.
1-2, schmidt trigger threshold circuit
Schmidt trigger threshold circuit includes resistance R2, R3, R4, R5, R6, R7, electric capacity C3, audion VT1, VT2.Three poles
The b pole of pipe VT1 is as the input of schmidt trigger threshold circuit；The b pole of one end connecting triode VT1 of resistance R2, another
End connects input circuit ground；The e pole of resistance R4 one end connecting triode VT1, the other end connects input circuit ground；Resistance R3 one end
The c pole of connecting triode VT1, the other end connects input circuit power positive end VCC；Resistance R5 is in parallel with electric capacity C3, then one end
The c pole of connecting triode VT1, the b pole of other end connecting triode VT2；The b pole of resistance R6 one end connecting triode VT2, another
End connects input circuit ground；The c pole of resistance R7 one end connecting triode VT2, the other end connects input circuit power positive end VCC；
The e pole of audion VT1 is extremely connected with the e of audion VT2；The c pole of audion VT2 is as the output of schmidt trigger threshold circuit
End.
Two audion VT1, VT2 couplings are to use electric resistance partial pressure and emitter stage coupling, and use positive feedback mode to carry out
Work so that input action level during output switching activity and output input action level when initial condition recovers are the most not
With, i.e. form the lagging voltage of action, complete input waveform shaping and avoid vibration.Remove the control signal after High-frequency Interference,
Export from the outfan of low pass filter, introduce the input of schmidt trigger threshold circuit, schmidt trigger threshold circuit pair
The control signal of input carries out shaping, forms digital square-wave, and adds voltage window hesitation, it is to avoid at critical voltage
Vibration is formed on Dian.
1-3, microwave signal source
Microwave signal source is for producing the microwave signal of characteristic frequency, and the input of output to manipulator, as manipulator
Carrier input signal, the frequency of carrier signal matches with the microstrip coupled antenna of rear class.Manipulator is defeated by microwave signal source
The control signal inputted by schmidt trigger threshold circuit, as high-frequency carrier signal, is modulated by the microwave signal entered, and produces
Raw high frequency modulated ripple, exports from outfan.
1-4, manipulator
Manipulator is for synthesizing the signal that finally need to be sent by antenna isolation, and it has two inputs；One is to control
Signal input part, is the useful signal needing isolation to send；Another is carrier input, and it is responsible for carrying effective control signal
Transmit.Control signal after shaping after filtering, from schmidt trigger threshold circuit outfan output, introduce modulation
The control end of device, as the input control signal of manipulator, controls the output of manipulator.The high frequency modulated ripple of manipulator output,
It is incorporated into the input of power amplifier.
1-5, power amplifier
Power amplifier includes resistance R8, R9, R10, R11, R12, electric capacity C4, high speed integrated operational amplifier U2, microwave
Pliotron VT3.One end of resistance R8 connects high speed integrated operational amplifier as the input of power amplifier, the other end
The negative input end of U2；One end of resistance R9 connects the positive input terminal of high speed integrated operational amplifier U2, and the other end connects input electricity
Lu Di；One end of resistance R10 connects the negative input end of high speed integrated operational amplifier U2, and the other end connects high speed integrated computation and puts
The outfan of big device U2；Electric capacity C4 connects the positive and negative power end of high speed integrated operational amplifier U2；One end of resistance R11 connects
The outfan of high speed integrated operational amplifier U2, the other end connects the b end of microwave power audion VT3；The two ends of resistance R12 are divided
Lian Jie b, e end of microwave power audion VT3；The c end of microwave power audion VT3 as the outfan of power amplifier,
Drive the transmitting terminal antenna of microstrip coupled antenna.
Power amplifier has been used for the power amplification of high frequency modulated ripple, drives the transmitting terminal of the microstrip coupled antenna of subordinate
Antenna, the transmitting terminal antenna of microstrip coupled antenna the isolation carrying out signal sends.The first order of power amplifier is by collecting at a high speed
Become operational amplifier U2 and peripheral resistance, electric capacity composition inverting amplifier, the high frequency modulated ripple of input is carried out preposition amplification, carries
The driving force of high signal, and signal level is adjusted to desired value；High frequency modulated ripple through preposition amplification sends into microwave merit
The control end of rate audion VT3, is completed the power amplification of signal, then drives the transmitting of microstrip coupled antenna by audion VT3
End antenna, the spatial orientation completing signal sends.
2, isolation transmission
Microstrip coupled antenna includes transmitting terminal antenna and receiving terminal antenna, and the isolation forming microwave isolation solid-state relay passes
Defeated part, has been used for the isolated transmission of signal.The transmitting terminal antenna of microstrip coupled antenna completes the spatial separation of signal and sends,
The receiving terminal antenna of microstrip coupled antenna completes the space of signal and receives.The transmitting terminal antenna of microstrip coupled antenna and receiving terminal sky
Line is constituted by the Copper Foil conductive strips that cover of given shape on printed circuit board, and transmitting terminal antenna covers Copper Foil conductive strips and completes signal
Plane directional transmissions, receiving terminal antenna covers Copper Foil conductive strips and sends for the transmitting terminal antenna of the microstrip coupled antenna of efficient reception
High frequency modulated ripple.
3, output circuit
As shown in Figure 4, demodulator, rectification multiple pressuring circuit, power tube drive circuit and power tube form microwave isolation
The output circuit part of solid-state relay, completes to receive the demodulation of signal, rectifying and wave-filtering, boosting and power amplification, finally drives
Power tube output signal.
3-1, demodulator
The high frequency modulated ripple received is completed signal demodulation by demodulator by demodulator, removes high frequency carrier, restores control
Signal processed.
3-2, rectification multiple pressuring circuit
Rectification multiple pressuring circuit includes electric capacity C5, C6, C7, C8, C9, C10, double diode VD1, VD2, VD3.The one of electric capacity C5
Holding the input as rectification multiple pressuring circuit, the other end connects the 3rd end of double diode VD1；The two ends of electric capacity C7 connect respectively
3rd end of double diode VD1, VD2；The two ends of electric capacity C9 connect the 3rd end of double diode VD2, VD3 respectively；The two of electric capacity C6
End connection the 1st of double diode VD1 the, 2 ends respectively；The two ends of electric capacity C8 connect the 1st of double diode VD2 the respectively, 2 ends；Electric capacity
The two ends of C10 connect the 1st of double diode VD3 the respectively, 2 ends；1st end of double diode VD1 connects output circuit ground；Double two poles
2nd end of pipe VD1 is connected with the 1st end of double diode VD2；2nd end of double diode VD2 and the 1st end phase of double diode VD3
Even；2nd end of double diode VD3 is as the outfan of rectification multiple pressuring circuit.
Rectification multiple pressuring circuit is constituted multi-stage rectifying voltage-multiplying circuit by electric capacity and diode, the control letter restoring demodulator
Number carrying out rectifying and wave-filtering, then carry out boosting process by the low-voltage signal that rectifying and wave-filtering is obtained by voltage-multiplying circuit, generation meets
The high level signal required.
3-3, power tube drive circuit
Power tube drive circuit includes resistance R13, R14, R15, R16, R17, electric capacity C11, integrated operational amplifier U3, surely
Pressure pipe VD4.One end of resistance R13 connects integrated operational amplifier U3's as the input of power tube drive circuit, the other end
Negative input end；One end of resistance R14 connects the positive input terminal of integrated operational amplifier U3, and the other end connects output circuit ground；Electricity
One end of resistance R15 connects the negative input end of integrated operational amplifier U3, and the other end connects the outfan of integrated operational amplifier U3；
The two ends of electric capacity C11 connect the positive and negative power end of integrated operational amplifier U3 respectively；Resistance R17 is in parallel with stabilivolt VD4；Surely
The negative terminal of pressure pipe VD4 connects the outfan of power tube drive circuit, and anode connects output circuit ground；One end of resistance R16 connects
The outfan of integrated operational amplifier U3, the other end connects the outfan of power tube drive circuit.
Power tube drive circuit is formed inverting amplifier, to input by integrated operational amplifier U3 and peripheral resistance, electric capacity
Signal be amplified, improve the driving force of signal, and signal level be adjusted to desired value, produce satisfactory power
Pipe drives signal, drives power tube action, output signal, drives output loading, completes output.
3-4, power tube
Power tube is field effect transistor or single audion or Darlington transistor.By using different capacity, different types of defeated
Go out power tube, corresponding power tube drive circuit of arranging in pairs or groups, it is achieved small-power, middle power are applied to powerful solid-state relay.
Embodiment 2:
A kind of multichannel microwave isolation solid-state relay, as in figure 2 it is shown, include shell and arrange 2 in the enclosure
Microwave isolation relay unit more than road.The structure of each road microwave isolation relay unit is same as in Example 1.It is to say,
Multiple single pass microwaves are isolated solid-state relay, is commonly assembled in same housing, just defines multichannel microwave
Isolation solid-state relay.By microwave isolation relay unit in each passage Ji Mei road is used different carrier frequencies and mates not
The microstrip coupled antenna of same frequency, it is to avoid each interchannel signal disturbing.Each passage the most different microwave isolation relay unit can
Equip identical and/or different power tubes.
The operation method of above-mentioned microwave isolation solid-state relay, comprises the steps:
External control signal introduces the input of low pass filter by input connector or pin, passes through low pass filter
Input control signal is carried out low-pass filtering, removes the High-frequency Interference in control signal；
Remove the control signal after High-frequency Interference, export from the outfan of low pass filter, introduce schmidt trigger thresholding
The input of circuit, schmidt trigger threshold circuit carries out shaping to the control signal of input, forms digital square-wave, and adds
Making alive window hesitation, it is to avoid form vibration on critical voltage point.
Control signal after shaping after filtering, from schmidt trigger threshold circuit outfan output, introduce modulation
The control end of device, to control the output of manipulator.
Microwave signal source is for producing the microwave signal of characteristic frequency, and the input of manipulator is arrived in output.
The microwave signal that microwave signal source is inputted by manipulator is as high-frequency carrier signal, to by schmidt trigger thresholding electricity
The control signal of road input is modulated, and produces high frequency modulated ripple, exports from outfan.
The high frequency modulated ripple of manipulator output, is incorporated into the input of power amplifier, and power amplifier completes high frequency modulation
The power amplification of ripple processed, drives the transmitting terminal antenna of the microstrip coupled antenna of subordinate, by the transmitting terminal antenna of microstrip coupled antenna
The isolation carrying out signal sends.
The receiving terminal antenna of microstrip coupled antenna has been used for receiving the transmitting terminal antenna of microstrip coupled antenna to be sent
High frequency modulated ripple.
The high frequency modulated ripple received is completed signal demodulation by demodulator, restores effective control signal.
The rectification multiple pressuring circuit control signal to restoring carries out rectifying and wave-filtering, then by voltage-multiplying circuit to rectifying and wave-filtering
The low-voltage signal obtained carries out boosting process, produces satisfactory high level signal.
The signal that prime is inputted by power tube drive circuit carries out power amplification, produces satisfactory power tube and drives letter
Number, drive power tube action, output signal, drive output loading.
The present invention uses microwave isolation to realize the solid-state relay of novel isolation method, continues improving electric isolation type solid-state
The reliability of electrical equipment, safety, be lifted at the capacity of resisting disturbance under the conditions of bad electromagnetic and radiation environment.Microwave isolation solid-state continues
Electrical equipment controls for signal isolation and the power of New Generation Military control system, has anti-electromagnetism and radiation interference ability is strong, work
Make the features such as reliability height, small in volume.
Claims (10)
1. microwave isolation solid-state relay, including relay body, is characterized in that, described relay body is by least one road microwave
Isolation relay unit is constituted；Every road microwave isolation relay unit includes input circuit and output circuit, wherein input circuit and defeated
Go out and realize electrical isolation by microwave mode between circuit.
Microwave the most according to claim 1 isolation solid-state relay, is characterized in that, microwave isolation relay unit in every road includes
Low pass filter, threshold circuit, microwave signal source, manipulator and power amplifier, demodulator, rectification multiple pressuring circuit, power tube
Drive circuit, power tube and microstrip coupled antenna；The most microstrip coupled antenna includes transmitting terminal antenna and receiving terminal antenna；
The input termination external input control signal of low pass filter；The outfan of low pass filter and the input of threshold circuit
It is connected；The outfan of threshold circuit is connected with the control end of manipulator, the outfan of microwave signal source and the input of manipulator
It is connected；The outfan of manipulator is connected with the input of power amplifier；The outfan of power amplifier and microstrip coupled antenna
Transmitting terminal antenna be connected；
The receiving terminal antenna of microstrip coupled antenna is connected with the input of demodulator；The outfan of demodulator and rectification multiple pressuring circuit
Input be connected；The outfan of rectification multiple pressuring circuit is connected with the input of power tube drive circuit；Power tube drive circuit
Outfan be connected with the control end of power tube；The outfan of power tube is to outside output drive signal.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, low pass filter includes resistance R1, electricity
Hold C1, C2, and operational amplifier U1；One end of resistance R1, as the input of low pass filter, controls letter with outside input
Number be connected；Resistance R1 and electric capacity C1 contacts, and the midpoint of series winding is connected with the positive input terminal of operational amplifier U1；Another of electric capacity C1
Hold with input circuit hold and be connected；The two ends of electric capacity C2 end positive and negative with the power supply of operational amplifier U1 respectively is connected；Operation amplifier
The negative input end of device U1 is connected with the outfan of operational amplifier U1；The outfan of operational amplifier U1 is as low pass filter
Outfan.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, threshold circuit includes resistance R2-R7, electricity
Hold C3, and audion VT1, VT2；The base stage of audion VT1 is as the input of threshold circuit；One end of resistance R2 connects three
The base stage of pole pipe VT1, the other end connects input circuit ground end；The emitter stage of resistance R4 one end connecting triode VT1, the other end is even
Hold with connecing input circuit；The colelctor electrode of resistance R3 one end connecting triode VT1, the other end connects input circuit power positive end VCC；
Resistance R5 is in parallel with electric capacity C3, the colelctor electrode of one end connecting triode VT1 after parallel connection, the other end connecting triode after parallel connection
The base stage of VT2；The base stage of resistance R6 one end connecting triode VT2, the other end connects input circuit ground end；Resistance R7 one end connects
The colelctor electrode of audion VT2, the other end connects input circuit power positive end VCC；The emitter stage of audion VT1 and audion VT2
Emitter stage be connected；The colelctor electrode of audion VT2 is as the outfan of threshold circuit.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, power amplifier includes resistance R8-
R12, electric capacity C4, operational amplifier U2, and microwave power audion VT3；Defeated as power amplifier of one end of resistance R8
Enter end, the negative input end of other end concatenation operation amplifier U2；The positive input terminal of one end concatenation operation amplifier U2 of resistance R9,
The other end connects input circuit ground end；The negative input end of one end concatenation operation amplifier U2 of resistance R10, other end concatenation operation
The outfan of amplifier U2；The positive and negative power end of electric capacity C4 concatenation operation amplifier U2；One end concatenation operation of resistance R11 is put
The outfan of big device U2, the other end connects the base stage of microwave power audion VT3；The two ends of resistance R12 connect microwave merit respectively
The base stage of rate audion VT3 and emitter stage；The colelctor electrode of microwave power audion VT3 is as the outfan of power amplifier.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, rectification multiple pressuring circuit includes electric capacity C5-
C10, and double diode VD1-VD3；One end of electric capacity C5 is as the input of rectification multiple pressuring circuit, and the other end connects double two poles
3rd end of pipe VD1；The two ends of electric capacity C7 connect the 3rd end of double diode VD1, VD2 respectively；The two ends of electric capacity C9 connect respectively
Connect the 3rd end of double diode VD2, VD3；The two ends of electric capacity C6 connect first and second end of double diode VD1 respectively；Electric capacity C8's
Two ends connect first and second end of double diode VD2 respectively；The two ends of electric capacity C10 connect the first and second of double diode VD3 respectively
End；First end of double diode VD1 connects output circuit ground end；Second end of double diode VD1 and the first of double diode VD2
End is connected；Second end of double diode VD2 is connected with first end of double diode VD3；Second end of double diode VD3 is as whole
The outfan of stream voltage-multiplying circuit.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, power tube drive circuit includes resistance
R13-R17, electric capacity C11, operational amplifier U3, and stabilivolt VD4；One end of resistance R13 is as power tube drive circuit
Input, the negative input end of other end concatenation operation amplifier U3；The positive input of one end concatenation operation amplifier U3 of resistance R14
End, the other end connects output circuit ground end；The negative input end of one end concatenation operation amplifier U3 of resistance R15, the other end connects
The outfan of operational amplifier U3；The positive and negative power end of the two ends of electric capacity C11 concatenation operation amplifier U3 respectively；Resistance R17 with
Stabilivolt VD4 is in parallel；The anode of stabilivolt VD4 connects output circuit ground end, one end concatenation operation amplifier U3's of resistance R16
The negative terminal of outfan, the other end of resistance R16 and stabilivolt VD4 is as the outfan of power tube drive circuit.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, described power tube is field effect transistor, list
Individual audion and/or Darlington transistor.
Microwave the most according to claim 2 isolation solid-state relay, is characterized in that, when microwave isolation relay unit is 2 tunnels
Time above, between every road microwave isolation relay unit, use different carrier frequencies.
The operation method of microwave the most according to claim 1 and 2 isolation solid-state relay, is characterized in that,
The control signal of outside input introduces the input of low pass filter, by low pass filter, signal is carried out low pass filtered
Ripple, removes the High-frequency Interference in control signal；
Removing the control signal after High-frequency Interference and introduce the input of threshold circuit, threshold circuit carries out shaping to signal, is formed
Digital square-wave, and add voltage window hesitation, it is to avoid on critical voltage point, form vibration；
Control signal after shaping introduces the control end of manipulator after filtering, to control the output of manipulator；
Microwave signal source is for producing the microwave signal of characteristic frequency, and the input of manipulator is arrived in output；
The microwave signal that microwave signal source is inputted by manipulator is as high-frequency carrier signal, to the control letter inputted by threshold circuit
Number it is modulated, produces high frequency modulated ripple；
High frequency modulated ripple is incorporated into the input of power amplifier, and power amplifier completes the power amplification of high frequency modulated ripple, drives
The transmitting terminal antenna of the microstrip coupled antenna of dynamic subordinate；
The transmitting terminal antenna of microstrip coupled antenna carries out the isolation of high frequency modulated ripple and sends；The receiving terminal antenna of microstrip coupled antenna
The high frequency modulated ripple of coming is sent for completing to receive the transmitting terminal antenna of microstrip coupled antenna；
The high frequency modulated ripple received is completed signal demodulation by demodulator, restores effective control signal；
The rectification multiple pressuring circuit control signal to restoring carries out rectifying and wave-filtering, is then obtained rectifying and wave-filtering by voltage-multiplying circuit
Low-voltage signal carry out boosting process, produce satisfactory high level signal；
The signal that prime is inputted by power tube drive circuit carries out power amplification, produces satisfactory power tube and drives signal,
Drive power tube action；
Power tube output signal, drives output loading.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395181A (en) * | 2017-08-04 | 2017-11-24 | 桂林航天电子有限公司 | Flat surface transformer isolates solid-state relay and its operation method |
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| CN203896326U (en) * | 2014-06-05 | 2014-10-22 | 上海托菲机电科技有限公司 | Wireless remote control solid state relay |
| CN104378885A (en) * | 2014-11-15 | 2015-02-25 | 广东良得光电科技有限公司 | Leading microwave sensing LED on-off control circuit |
| CN105634563A (en) * | 2015-12-22 | 2016-06-01 | 武汉瑞纳捷电子技术有限公司 | Low frequency communication system and method limiting distance |
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| CN2183050Y (en) * | 1993-10-09 | 1994-11-16 | 合肥中立科技开发公司 | Micro-wave and thermal-electric double control switch |
| JP2010098408A (en) * | 2008-10-15 | 2010-04-30 | Japan Radio Co Ltd | Relay device |
| CN203896326U (en) * | 2014-06-05 | 2014-10-22 | 上海托菲机电科技有限公司 | Wireless remote control solid state relay |
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| CN107395181A (en) * | 2017-08-04 | 2017-11-24 | 桂林航天电子有限公司 | Flat surface transformer isolates solid-state relay and its operation method |
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