CN105744246B - A kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission - Google Patents
A kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission Download PDFInfo
- Publication number
- CN105744246B CN105744246B CN201610157215.3A CN201610157215A CN105744246B CN 105744246 B CN105744246 B CN 105744246B CN 201610157215 A CN201610157215 A CN 201610157215A CN 105744246 B CN105744246 B CN 105744246B
- Authority
- CN
- China
- Prior art keywords
- resistance
- operational amplifier
- phase input
- output
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 230000000007 visual effect Effects 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 abstract description 7
- 238000003032 molecular docking Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000002490 cerebral effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 210000003710 cerebral cortex Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002599 functional magnetic resonance imaging Methods 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
Abstract
The present invention relates to a kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission, including the first input circuit, the first output loop, the second input circuit and the second output loop, first input circuit is connected with the first output loop, second input circuit is connected with the second output loop, first input circuit includes the first input interface, this is used in the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission, employ conventional component, while performance is ensured, production cost is also reduced, the market competitiveness is improved；Differential signal is sent by the amplifier in input circuit, for the transmission of drive signal, while being compensated by the operational amplifier docking collection of letters number in output loop, it is achieved thereby that the transmitting of signal；Moreover, the decay in transmission can compensate for by the adjustment resistance in output loop, so as to further increase the reliability of signal transmission.
Description
Technical field
The present invention relates to a kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission.
Background technology
Magnetic resonance cerebral function imaging (fMRI) is by stimulating specific sense organ, causing the nerve of cerebral cortex corresponding site living
Dynamic (functional areas activation), and a kind of research method shown by MRI.It not only includes anatomic information, and
Reaction mechanism with nervous system, as a kind of noninvasive, live body research method, to further appreciating that mankind's central nervous system
The mechanism of action of system, and clinical research provide an important approach.When carrying out magnetic resonance cerebral function imaging, video is passed
Defeated reliability is quite important, in the prior art, is all to be transmitted signal by the two-way mode of two-wire, but be due to pass
It is defeated distant, the phenomenon that signal is often decayed, so as to reduce the authenticity of signal transmission；Moreover, due to
Signal circuit is complicated, and technique is excessive, so as to improve the production cost of the transmission circuit, have impact on its market competitiveness.
The content of the invention
The technical problem to be solved in the present invention is：In order to overcome prior art transmission easily to decay, lack compensation and production
There is provided a kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission for the high deficiency of cost.
The technical solution adopted for the present invention to solve the technical problems is：A kind of two-wire for magnetic resonance visual transmission is double
To transmission chroma circuit, including the first input circuit, the first output loop, the second input circuit and the second output loop,
First input circuit is connected with the first output loop, and second input circuit is connected with the second output loop；
First input circuit include the first input interface, first resistor, second resistance, 3rd resistor, the 4th resistance,
5th resistance, the 6th resistance, the 7th resistance, the first operational amplifier and the second operational amplifier, first operational amplifier
In-phase input end be grounded by the first input interface, the in-phase input end of first operational amplifier is connect by first resistor
Ground, the in-phase input end of first operational amplifier is connected by the inverting input of second resistance and the second operational amplifier
Connect, the series circuit and second that the in-phase input end of first operational amplifier is made up of second resistance and the 4th resistance is transported
The output end connection of amplifier is calculated, the in-phase input end of second operational amplifier is grounded, first operational amplifier
In-phase input end is connected by 3rd resistor with the inverting input of the first operational amplifier, first operational amplifier it is anti-
Phase input is connected by the 5th resistance with the output end of the first operational amplifier, the output end of first operational amplifier with
6th resistance is connected, and the output end of second operational amplifier is connected with the 7th resistance；
Second input circuit includes the second input interface, the 14th resistance, the 15th resistance, the 16th resistance, the
17 resistance, the 18th resistance, the 19th resistance, the 20th resistance, four-operational amplifier and the 5th operational amplifier, it is described
The in-phase input end of four-operational amplifier is grounded by the second input interface, the in-phase input end of the four-operational amplifier
By the 14th resistance eutral grounding, the in-phase input end of the four-operational amplifier passes through the 15th resistance and the 5th operation amplifier
The inverting input connection of device, the in-phase input end of the four-operational amplifier passes through the 15th resistance and the 17th resistance group
Into series circuit be connected with the output end of the 5th operational amplifier, the in-phase input end of the 5th operational amplifier ground connection,
The in-phase input end of the four-operational amplifier is connected by the 16th resistance with the inverting input of four-operational amplifier,
The inverting input of the four-operational amplifier is connected by the 18th resistance with the output end of four-operational amplifier, described
The output end of four-operational amplifier is connected with the 19th resistance, output end and the 20th resistance of the 5th operational amplifier
Connection；
Second output loop includes the 3rd operational amplifier, the 8th resistance, the 9th resistance, the tenth resistance, the 11st
Resistance, the 12nd resistance, the 13rd resistance, the first electric capacity and the second output interface, the model of the 3rd operational amplifier
LT1187, the output end that the first in-phase input end of the 3rd operational amplifier passes through the 7th resistance and the second operational amplifier
Connection, the first inverting input of the 3rd operational amplifier is connected by the output end of the 6th resistance and the first operational amplifier
Connect, the second reverse inter-input-ing ending grounding of the 3rd operational amplifier, the second in-phase input end of the 3rd operational amplifier
The series circuit being made up of the 13rd resistance and the first electric capacity is grounded, the second in-phase input end of the 3rd operational amplifier
By the 12nd resistance eutral grounding, the second in-phase input end of the 3rd operational amplifier is put by the tenth resistance and the 3rd computing
The output end connection of big device, what the output end of the 3rd operational amplifier was made up of the 11st resistance and the second output interface
Series circuit is grounded, and the first in-phase input end of the 3rd operational amplifier is connected with the 8th resistance, and the 3rd computing is put
First inverting input of big device is connected with the 9th resistance；
First output loop includes the 6th operational amplifier, the 21st resistance, the 22nd resistance, the 23rd
Resistance, the 24th resistance, the 25th resistance, the 26th resistance, the second electric capacity and the first output interface, the 6th fortune
The model LT1187 of amplifier is calculated, the first in-phase input end of the 6th operational amplifier passes through the 20th resistance and the 5th
The output end connection of operational amplifier, the first inverting input of the 6th operational amplifier passes through the 19th resistance and the 3rd
The output end connection of operational amplifier, the second reverse inter-input-ing ending grounding of the 6th operational amplifier, the 6th computing is put
The series circuit that second in-phase input end of big device is made up of the 26th resistance and the second electric capacity is grounded, the 6th computing
Second in-phase input end of amplifier passes through the 25th resistance eutral grounding, the second in-phase input end of the 6th operational amplifier
It is connected by the 23rd resistance with the output end of the 6th operational amplifier, the output end of the 6th operational amplifier passes through
The series circuit ground connection of 24 resistance and the first output interface composition, the first in-phase input end of the 6th operational amplifier
The series circuit being made up of the 21st resistance and the 8th resistance is connected with the first in-phase input end of the 3rd operational amplifier,
The series circuit that first inverting input of the 6th operational amplifier is made up of the 22nd resistance and the 9th resistance with
The first inverting input connection of 3rd operational amplifier.
Preferably, the model of first operational amplifier, the second operational amplifier and four-operational amplifier is
LT1195。
Preferably, first input interface, the first output interface, the second input interface and the second output interface are
Bnc interface.
Preferably, the temperature antijamming capability in order to improve circuit, the temperature drift system of first electric capacity and the second electric capacity
Number is 2%ppm.
Preferably, in order to be compensated to circuit so that 3dB bandwidth reaches 4MHz, the capacitance of first electric capacity
For 1000pF, the resistance of the 13rd resistance is 50 ohm.
Preferably, in order to be compensated to circuit so that 3dB bandwidth reaches 4MHz, the capacitance of second electric capacity
For 1000pF, the resistance of the 26th resistance is 50 ohm.
The beneficial effects of the invention are as follows, this is used in the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission,
Conventional component is employed, while performance is ensured, production cost is also reduced, improves the market competitiveness；Pass through input
Amplifier in loop sends differential signal, for the transmission of drive signal, while passing through the operational amplifier pair in output loop
Receive signal to compensate, it is achieved thereby that the transmitting of signal；Moreover, the adjustment resistance energy in output loop is passed through
Decay in enough compensation transmission, so as to further increase the reliability of signal transmission.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission of the present invention
Figure；
In figure：IN1. the first input interface, the input interfaces of IN2. second, the output interfaces of OUT1. first, OUT2. second is defeated
Outgoing interface, R1. first resistors, R2. second resistances, R3. 3rd resistors, the resistance of R4. the 4th, the resistance of R5. the 5th, the electricity of R6. the 6th
Resistance, the resistance of R7. the 7th, the resistance of R8. the 8th, the resistance of R9. the 9th, the resistance of R10. the tenth, the resistance of R11. the 11st, R12. the 12nd
Resistance, the resistance of R13. the 13rd, the resistance of R14. the 14th, the resistance of R15. the 15th, the resistance of R16. the 16th, the electricity of R17. the 17th
Resistance, the resistance of R18. the 18th, the resistance of R19. the 19th, the resistance of R20. the 20th, the resistance of R21. the 21st, R22. the 22nd
Resistance, the resistance of R23. the 23rd, the resistance of R24. the 24th, the resistance of R25. the 25th, the resistance of R26. the 26th, U1.
First operational amplifier, the operational amplifiers of U2. second, the operational amplifiers of U3. the 3rd, U4. four-operational amplifiers, U5. the 5th
Operational amplifier, the operational amplifiers of U6. the 6th, the electric capacity of C1. first, the electric capacity of C2. second.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission, including first defeated
Entry loop, the first output loop, the second input circuit and the second output loop, first input circuit and the first output loop
Connection, second input circuit is connected with the second output loop；
First input circuit include the first input interface IN1, first resistor R1, second resistance R2,3rd resistor R3,
4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the first operational amplifier U1 and the second operational amplifier
U2, the in-phase input end of the first operational amplifier U1 is grounded by the first input interface IN1, first operational amplifier
U1 in-phase input end is grounded by first resistor R1, and the in-phase input end of the first operational amplifier U1 passes through second resistance
R2 is connected with the second operational amplifier U2 inverting input, and the in-phase input end of the first operational amplifier U1 passes through second
The series circuit of resistance R2 and the 4th resistance R4 compositions is connected with the second operational amplifier U2 output end, and second computing is put
Big device U2 in-phase input end ground connection, the in-phase input end of the first operational amplifier U1 is transported by 3rd resistor R3 and first
Calculate amplifier U1 inverting input connection, the inverting input of the first operational amplifier U1 passes through the 5th resistance R5 and the
One operational amplifier U1 output end connection, the output end of the first operational amplifier U1 is connected with the 6th resistance R6, described
Second operational amplifier U2 output end is connected with the 7th resistance R7；
Second input circuit includes the second input interface IN2, the 14th resistance R14, the 15th resistance R15, the tenth
Six resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th resistance R20, the 4th computing are put
Big device U4 and the 5th operational amplifier U5, the in-phase input end of the four-operational amplifier U4 passes through the second input interface IN2
Ground connection, the in-phase input end of the four-operational amplifier U4 is grounded by the 14th resistance R14, the four-operational amplifier
U4 in-phase input end is connected by the 15th resistance R15 with the 5th operational amplifier U5 inverting input, the 4th fortune
The in-phase input end for calculating amplifier U4 passes through the 15th resistance R15 and the 17th resistance R17 series circuits constituted and the 5th fortune
Calculate amplifier U5 output end connection, the in-phase input end ground connection of the 5th operational amplifier U5, the 4th operation amplifier
Device U4 in-phase input end is connected by the 16th resistance R16 with four-operational amplifier U4 inverting input, and the described 4th
Operational amplifier U4 inverting input is connected by the 18th resistance R18 with four-operational amplifier U4 output end, described
Four-operational amplifier U4 output end is connected with the 19th resistance R19, the output end of the 5th operational amplifier U5 and the
20 resistance R20 connections；
Second output loop includes the 3rd operational amplifier U3, the 8th resistance R8, the 9th resistance R9, the tenth resistance
R10, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13, the first electric capacity C1 and the second output interface OUT2, institute
The 3rd operational amplifier U3 model LT1187 is stated, the first in-phase input end of the 3rd operational amplifier U3 passes through the 7th
Resistance R7 is connected with the second operational amplifier U2 output end, and the first inverting input of the 3rd operational amplifier U3 passes through
6th resistance R6 is connected with the first operational amplifier U1 output end, the second inverting input of the 3rd operational amplifier U3
Ground connection, the second in-phase input end of the 3rd operational amplifier U3 passes through the 13rd resistance R13 and the first electric capacity C1 compositions
Series circuit is grounded, and the second in-phase input end of the 3rd operational amplifier U3 is grounded by the 12nd resistance R12, and described the
Three operational amplifier U3 the second in-phase input end is connected by the tenth resistance R10 with the 3rd operational amplifier U3 output end,
The series circuit that the output end of the 3rd operational amplifier U3 is made up of the 11st resistance R11 and the second output interface OUT2
Ground connection, the first in-phase input end of the 3rd operational amplifier U3 is connected with the 8th resistance R8, the 3rd operational amplifier
U3 the first inverting input is connected with the 9th resistance R9；
First output loop include the 6th operational amplifier U6, the 21st resistance R21, the 22nd resistance R22,
23rd resistance R23, the 24th resistance R24, the 25th resistance R25, the 26th resistance R26, the second electric capacity C2 and
First output interface OUT1, the model LT1187 of the 6th operational amplifier U6, the of the 6th operational amplifier U6
One in-phase input end is connected by the 20th resistance R20 with the 5th operational amplifier U5 output end, the 6th operation amplifier
Device U6 the first inverting input is connected by the 19th resistance R19 with the 3rd operational amplifier U3 output end, and the described 6th
Operational amplifier U6 the second reverse inter-input-ing ending grounding, the second in-phase input end of the 6th operational amplifier U6 passes through second
The series circuit ground connection of 16 resistance R26 and the second electric capacity C2 compositions, the second homophase input of the 6th operational amplifier U6
End passes through the 23rd electricity by the 25th resistance R25 ground connection, the second in-phase input end of the 6th operational amplifier U6
Resistance R23 is connected with the 6th operational amplifier U6 output end, and the output end of the 6th operational amplifier U6 passes through the 24th
The series circuit ground connection of resistance R24 and the first output interface OUT1 compositions, the first of the 6th operational amplifier U6 is same mutually defeated
Enter first same phase of the end by the 21st resistance R21 and the 8th resistance R8 series circuits and the 3rd operational amplifier U3 constituted
Input is connected, and the first inverting input of the 6th operational amplifier U6 passes through the 22nd resistance R22 and the 9th resistance
The series circuit of R9 compositions is connected with the 3rd operational amplifier U3 the first inverting input.
Preferably, the first operational amplifier U1, the second operational amplifier U2 and four-operational amplifier U4 type
Number it is LT1195.
Preferably, the first input interface IN1, the first output interface OUT1, the second input interface IN2 and second are defeated
Outgoing interface OUT2 is bnc interface.
Preferably, the temperature antijamming capability in order to improve circuit, the first electric capacity C1 and the second electric capacity C2 temperature
It is 2%ppm to float coefficient.
Preferably, in order to be compensated to circuit so that 3dB bandwidth reaches 4MHz, the appearance of the first electric capacity C1
It is worth for 1000pF, the resistance of the 13rd resistance R13 is 50 ohm.
Preferably, in order to be compensated to circuit so that 3dB bandwidth reaches 4MHz, the appearance of the second electric capacity C2
It is worth for 1000pF, the resistance of the 26th resistance R26 is 50 ohm.
This is used in the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission, employs conventional component,
While ensureing performance, production cost is also reduced, the market competitiveness is improved.The first operation amplifier in first input circuit
Device U1 and the second operational amplifier U2 transmitting terminal can produce differential signal, Double-strand transmission of the driving with specified impedance
Line.In the receiving terminal of the output loop of the other end first, with the 6th operational amplifier U6, model LT1187 as receiver,
Differential signal is converted into single-ended signal by it, amplifier feedback node provide compensation so that ensure that signal transmission can
By property.Wherein, the 25th resistance R25 of regulation can compensate for the decay in transmission, so as to further increase signal transmission
Reliability.Similarly, in the second input circuit, four-operational amplifier U4 and the 5th operational amplifier U5 transmitting terminal produce differential
Signal, Double-strand transmission line of the driving with specified impedance, the 3rd operational amplifier U3 of the second output loop it differential is believed
Number single-ended signal is converted into, compensation is provided in the feedback node of amplifier.Wherein, the 12nd resistance R12 can compensate in transmission
Decay so that further increase signal transmission reliability.In fact, the 12nd resistance R12 and the 25th resistance R25
It is adjustment resistance.
Compared with prior art, this is used in the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission, uses
Conventional component, while performance is ensured, also reduces production cost, improves the market competitiveness；Pass through input circuit
In amplifier send differential signal, for the transmission of drive signal, at the same by the operational amplifier in output loop to receive
Signal is compensated, it is achieved thereby that the transmitting of signal；Moreover, it can be mended by the adjustment resistance in output loop
The decay in transmission is repaid, so as to further increase the reliability of signal transmission.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (6)
1. a kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission, it is characterised in that defeated including first
Entry loop, the first output loop, the second input circuit and the second output loop, first input circuit and the first output loop
Connection, second input circuit is connected with the second output loop；
First input circuit includes the first input interface (IN1), first resistor (R1), second resistance (R2), 3rd resistor
(R3), the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6), the 7th resistance (R7), the first operational amplifier (U1) and
Second operational amplifier (U2), the in-phase input end of first operational amplifier (U1) is connect by the first input interface (IN1)
Ground, the in-phase input end of first operational amplifier (U1) is grounded by first resistor (R1), first operational amplifier
(U1) in-phase input end is connected by second resistance (R2) with the inverting input of the second operational amplifier (U2), and described first
The series circuit and second that the in-phase input end of operational amplifier (U1) is made up of second resistance (R2) and the 4th resistance (R4)
The output end connection of operational amplifier (U2), the in-phase input end ground connection of second operational amplifier (U2), first fortune
The in-phase input end for calculating amplifier (U1) is connected by 3rd resistor (R3) with the inverting input of the first operational amplifier (U1),
The output that the inverting input of first operational amplifier (U1) passes through the 5th resistance (R5) and the first operational amplifier (U1)
End connection, the output end of first operational amplifier (U1) is connected with the 6th resistance (R6), second operational amplifier
(U2) output end is connected with the 7th resistance (R7)；
Second input circuit includes the second input interface (IN2), the 14th resistance (R14), the 15th resistance (R15), the
16 resistance (R16), the 17th resistance (R17), the 18th resistance (R18), the 19th resistance (R19), the 20th resistance
(R20), four-operational amplifier (U4) and the 5th operational amplifier (U5), the homophase input of the four-operational amplifier (U4)
End is grounded by the second input interface (IN2), and the in-phase input end of the four-operational amplifier (U4) passes through the 14th resistance
(R14) it is grounded, the in-phase input end of the four-operational amplifier (U4) passes through the 15th resistance (R15) and the 5th operation amplifier
The inverting input connection of device (U5), the in-phase input end of the four-operational amplifier (U4) passes through the 15th resistance (R15)
The series circuit constituted with the 17th resistance (R17) is connected with the output end of the 5th operational amplifier (U5), the 5th computing
The in-phase input end ground connection of amplifier (U5), the in-phase input end of the four-operational amplifier (U4) passes through the 16th resistance
(R16) inverting input with four-operational amplifier (U4) is connected, the inverting input of the four-operational amplifier (U4)
It is connected by the 18th resistance (R18) with the output end of four-operational amplifier (U4), the four-operational amplifier (U4)
Output end is connected with the 19th resistance (R19), and output end and the 20th resistance (R20) of the 5th operational amplifier (U5) connect
Connect；
Second output loop includes the 3rd operational amplifier (U3), the 8th resistance (R8), the 9th resistance (R9), the tenth resistance
(R10), the 11st resistance (R11), the 12nd resistance (R12), the 13rd resistance (R13), the first electric capacity (C1) and the second output
Interface (OUT2), the model LT1187 of the 3rd operational amplifier (U3), the first of the 3rd operational amplifier (U3)
In-phase input end is connected by the 7th resistance (R7) with the output end of the second operational amplifier (U2), the 3rd operational amplifier
(U3) the first inverting input is connected by the 6th resistance (R6) with the output end of the first operational amplifier (U1), and the described 3rd
Second reverse inter-input-ing ending grounding of operational amplifier (U3), the second in-phase input end of the 3rd operational amplifier (U3) passes through
The series circuit ground connection of 13rd resistance (R13) and the first electric capacity (C1) composition, the second of the 3rd operational amplifier (U3)
In-phase input end is grounded by the 12nd resistance (R12), and the second in-phase input end of the 3rd operational amplifier (U3) passes through
Tenth resistance (R10) is connected with the output end of the 3rd operational amplifier (U3), the output end of the 3rd operational amplifier (U3)
The series circuit being made up of the 11st resistance (R11) and the second output interface (OUT2) is grounded, the 3rd operational amplifier
(U3) the first in-phase input end is connected with the 8th resistance (R8), the first inverting input of the 3rd operational amplifier (U3)
It is connected with the 9th resistance (R9)；
First output loop includes the 6th operational amplifier (U6), the 21st resistance (R21), the 22nd resistance
(R22), the 23rd resistance (R23), the 24th resistance (R24), the 25th resistance (R25), the 26th resistance
(R26), the second electric capacity (C2) and the first output interface (OUT1), the model LT1187 of the 6th operational amplifier (U6),
First in-phase input end of the 6th operational amplifier (U6) passes through the 20th resistance (R20) and the 5th operational amplifier (U5)
Output end connection, the first inverting input of the 6th operational amplifier (U6) passes through the 19th resistance (R19) and the 3rd
The output end connection of operational amplifier (U3), the second reverse inter-input-ing ending grounding of the 6th operational amplifier (U6), described the
The series connection that second in-phase input end of six operational amplifiers (U6) is made up of the 26th resistance (R26) and the second electric capacity (C2)
Circuit ground, the second in-phase input end of the 6th operational amplifier (U6) is grounded by the 25th resistance (R25), described
Second in-phase input end of the 6th operational amplifier (U6) passes through the 23rd resistance (R23) and the 6th operational amplifier (U6)
Output end is connected, and the output end of the 6th operational amplifier (U6) passes through the 24th resistance (R24) and the first output interface
(OUT1) the series circuit ground connection of composition, the first in-phase input end of the 6th operational amplifier (U6) passes through the 21st electricity
The series circuit of resistance (R21) and the 8th resistance (R8) composition is connected with the first in-phase input end of the 3rd operational amplifier (U3),
First inverting input of the 6th operational amplifier (U6) is made up of the 22nd resistance (R22) and the 9th resistance (R9)
Series circuit be connected with the first inverting input of the 3rd operational amplifier (U3).
2. being used for the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission as claimed in claim 1, its feature exists
In the model of first operational amplifier (U1), the second operational amplifier (U2) and four-operational amplifier (U4) is
LT1195。
3. being used for the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission as claimed in claim 1, its feature exists
In first input interface (IN1), the first output interface (OUT1), the second input interface (IN2) and the second output interface
(OUT2) it is bnc interface.
4. being used for the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission as claimed in claim 1, its feature exists
In the temperature drift coefficient of first electric capacity (C1) and the second electric capacity (C2) is 2%ppm.
5. being used for the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission as claimed in claim 1, its feature exists
In the capacitance of first electric capacity (C1) is 1000pF, and the resistance of the 13rd resistance (R13) is 50 ohm.
6. being used for the two-wire transmitted in both directions chroma circuit of magnetic resonance visual transmission as claimed in claim 1, its feature exists
In the capacitance of second electric capacity (C2) is 1000pF, and the resistance of the 26th resistance (R26) is 50 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157215.3A CN105744246B (en) | 2016-03-18 | 2016-03-18 | A kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157215.3A CN105744246B (en) | 2016-03-18 | 2016-03-18 | A kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105744246A CN105744246A (en) | 2016-07-06 |
| CN105744246B true CN105744246B (en) | 2017-08-18 |
Family
ID=56251770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610157215.3A Expired - Fee Related CN105744246B (en) | 2016-03-18 | 2016-03-18 | A kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105744246B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726713B (en) * | 2009-11-03 | 2012-10-31 | 厦门大学 | Preamplifier of high-field nuclear magnetic resonance spectrometer 1H/19F channel |
| US20120143040A1 (en) * | 2010-12-06 | 2012-06-07 | General Electric Company | Patient communication and monitoring in magnetic resonance imaging systems |
| CN103997961A (en) * | 2011-10-10 | 2014-08-20 | 韦克福里斯特大学健康科学院 | Automated renal evaluation systems and methods using MRI image data |
| KR101525013B1 (en) * | 2012-11-05 | 2015-06-16 | 삼성전자주식회사 | Magnetic resonance imaging apparatus |
-
2016
- 2016-03-18 CN CN201610157215.3A patent/CN105744246B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105744246A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE112017003738T5 (en) | Communication system with hybrid common mode choke and Kelvin voltage sensing | |
| CN104569571A (en) | High-speed multichannel current-voltage multiplexing collection unit and data collection method | |
| CN106375170A (en) | Mbus master node receiving circuit | |
| CN108309280A (en) | The signal intensifier circuit of electrocardiograph | |
| CN105744246B (en) | A kind of two-wire transmitted in both directions chroma circuit for magnetic resonance visual transmission | |
| WO2000070764A1 (en) | Compact bus interface with an integrated electrical isolation | |
| CN101295453A (en) | Switchable multi-species three-order chaos combined circuit and its use method | |
| CN205280802U (en) | Three phase three wire system voltage sampling circuit | |
| CN106027120B (en) | A kind of method for eliminating multi-conductor transmission lines near-end stable state crosstalk | |
| CN102098038B (en) | Signal conditioning card | |
| CN204270190U (en) | A kind of control circuit of rudder system instruction current | |
| CN201167302Y (en) | Circuit for amplifying differential signal | |
| CN204906330U (en) | Filter module based on sensor signal | |
| CN106597897A (en) | Constant current source multi-channel control interlocking circuit | |
| CN202310028U (en) | Mini microphone | |
| CN207475533U (en) | A kind of signal source circuit | |
| CN207732737U (en) | A kind of multi-path power divider device for aviation monitoring | |
| CN204945710U (en) | A kind of driver control circuit | |
| CN206506503U (en) | The wave filter of mobile terminal data harvester | |
| CN205847428U (en) | A kind of video signal transmission circuit of improvement | |
| CN110830045A (en) | Duplex communication circuit and device | |
| CN204347832U (en) | A kind of computing machine usb communication interface data transmission amplifier | |
| CN217360612U (en) | Elevator analog quantity output circuit | |
| CN205027808U (en) | Current sensor | |
| CN105978628B (en) | A kind of optical module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ren Yilin Inventor before: Xia Shijie |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170721 Address after: 100191 Beijing city Haidian District Xitucheng Road No. 10 Applicant after: Beijing University of Posts and Telecommunications Address before: 518000 B, building 14H, building 10, Tian Tian Qingyun garden, Shenzhen, Guangdong, Luohu District Applicant before: Xia Shijie |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 |