CN104459572B - Superconductive quantum interference sensor-based system based on multichannel - Google Patents
Superconductive quantum interference sensor-based system based on multichannel Download PDFInfo
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- CN104459572B CN104459572B CN201310440262.5A CN201310440262A CN104459572B CN 104459572 B CN104459572 B CN 104459572B CN 201310440262 A CN201310440262 A CN 201310440262A CN 104459572 B CN104459572 B CN 104459572B
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Abstract
The present invention provides a kind of superconductive quantum interference sensor-based system based on multichannel, including：Multiple SPUIDs；At least one integrated form reading circuit structure, wherein, the integrated form reading circuit structure includes：Multiple reading circuit plates, the induced signal for the SPUID to be provided is amplified, feedback processing, and is exported；The first interface that each SPUID is connected with reading circuit plate correspondence；The second interface that induced signal handled by each reading circuit plate is exported.The present invention is highly integrated by the way that reading circuit plate is given, and can effectively reduce the volume of the superconductive quantum interference sensor-based system of multichannel, easily portable.
Description
Technical field
The present invention relates to a kind of sensor, more particularly to a kind of superconductive quantum interference sensor-based system based on multichannel.
Background technology
SPUID (superconducting Quantum Interference Device, SQUID) is
The most sensitive magnetic induction device being currently known, is widely used in the detection of faint magnetic signal.The SPUID
It is the superconducting ring being made up of two Josephson junctions, in the presence of quantum Interference, Josephson junction two ends can produce response
The voltage signal in magnetic field.The Magnetic Sensor of based superconductive quantum interference device includes：The SQUID and it is connected with the SQUID
Reading circuit.
With the popularization of superconductive quantum interference sensor, the superconductive quantum interference sensor-based system based on multichannel is due to can
Detect multiple magnetic signals simultaneously and attract attention.At present, each SQUID in the superconductive quantum interference sensor-based system based on multichannel
The reading circuit of oneself is all connected with, each reading circuit is one piece of independent board structure of circuit, therefore, it is described super based on multichannel
The volume for leading quantum interference sensor-based system is excessive, not readily portable and use.
Accordingly, it would be desirable to be improved to the existing superconductive quantum interference sensor-based system based on multichannel.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of superconduction amount based on multichannel
Sub- interference sensing system, integrated level for solving the superconductive quantum interference sensor-based system based on multichannel in the prior art is low,
The low problem of automaticity.
In order to achieve the above objects and other related objects, the present invention provides a kind of superconductive quantum interference based on multichannel and passed
Sensing system, at least includes：Multiple SPUIDs；At least one integrated form reading circuit structure, including：It is multiple to read
Circuit board, the induced signal for the SPUID to be provided is amplified, feedback processing, and is given defeated
Go out；The first interface that each SPUID is connected with reading circuit plate correspondence；By each reading circuit plate
The second interface that handled induced signal is exported.
Preferably, the integrated form reading circuit structure also includes：Powered to the integrated form reading circuit and with it is outer
The 3rd connected interface of portion's equipment.
Preferably, the reading circuit plate includes：The reading being connected with the first interface, second interface and the 3rd interface
Circuit unit；It is connected with the reading circuit unit and the 3rd interface and for based on as described in the 3rd interface access
The control instruction that external equipment is provided controls the control unit of the state of the reading circuit unit；With the reading circuit list
The digital voltage converting unit that is connected with the 3rd interface of member, for described control unit control under connect by the described 3rd
Mouth is powered to the reading circuit unit connected and by the reading circuit unit to corresponding SPUID.
Preferably, the first interface and second interface are pluging connector interface.
Preferably, the 3rd interface is I2C interface.
Preferably, the integrated form reading circuit structure includes：It is spaced the heat sink of each reading circuit plate.
Preferably, the superconductive quantum interference sensor-based system based on multichannel also includes：Each integrated form is read
The assembling parts being fixed together of circuit structure arrangement.
Preferably, the assembling parts include：Interface fixed plate, for by each integrated form reading circuit structure
What first interface was arranged is fixed together；Below the interface fixed plate and the installation bottom parts with through hole, it is used for
The transmission line of each SPUID is connected by the through hole with the first interface in the interface fixed plate,
Wherein, the installation bottom parts are extended downwardly along the through hole.
Preferably, the superconductive quantum interference sensor-based system based on multichannel also includes：It is upper with the assembling parts
Face is connected and the shielding shell for all integrated form reading circuit structures to be encapsulated.
Preferably, the superconductive quantum interference sensor-based system based on multichannel also includes：With under the assembling parts
The connected container in face, for providing superconduction environment for the SPUID.
Preferably, the superconductive quantum interference sensor-based system based on multichannel also includes：In the shielding shell and appearance
Heat dissipation channel is equipped with device, wherein, the heat dissipation channel in the container is connected with the heat dissipation channel of the shielding shell.
Preferably, the superconductive quantum interference sensor-based system based on multichannel also includes：In the shielding shell and appearance
Heat dissipation channel is equipped with device, wherein, the sky that the gas in heat dissipation channel in the container is conveyed with outside air pump
After gas phase mixing, in the heat dissipation channel for transporting to the shielding shell.
As described above, the superconductive quantum interference sensor-based system based on multichannel of the present invention, has the advantages that：Often
One reading circuit plate of individual SPUID correspondence, realizes completely self-contained induced signal processing transmission channel, meanwhile,
Reading circuit plate is given highly integrated, the volume of the superconductive quantum interference sensor-based system of multichannel can be effectively reduced, more just
In carrying.
Brief description of the drawings
Fig. 1 is shown as the structural representation of the superconductive quantum interference sensor-based system based on multichannel of the present invention.
Fig. 2 is shown as integrated form reading circuit structure in the superconductive quantum interference sensor-based system based on multichannel of the present invention
Structural representation.
Fig. 3 is shown as a kind of knot of preferred embodiment in the superconductive quantum interference sensor-based system based on multichannel of the present invention
Structure schematic diagram.
Fig. 4 is shown as another preferred embodiment in the superconductive quantum interference sensor-based system based on multichannel of the present invention
Structural representation.
Fig. 5 is shown as another preferred embodiment in the superconductive quantum interference sensor-based system based on multichannel of the present invention
Structural representation.
Component label instructions
The 1 superconductive quantum interference sensor-based system based on multichannel
11 SPUIDs
12 integrated form reading circuit structures
121 reading circuit plates
122 first interfaces
123 second interfaces
124 the 3rd interfaces
125 digital voltage converting units
126 reading circuit units
127 control units
128 heat sinks
17 assembling parts
171 interface fixed plates
172 install bottom parts
18 shielding shells
181 heat dissipation channels
19 containers
191 heat dissipation channels
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Fig. 1 is referred to Fig. 3.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to
Coordinate the content disclosed in specification, so that those skilled in the art is understood with reading, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influenceing effect of the invention that can be generated and the purpose that can reach, all should still it fall in disclosed skill
Art content is obtained in the range of covering.Meanwhile, in this specification it is cited as " on ", " under ", "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
As shown in figure 1, the present invention provides a kind of superconductive quantum interference sensor-based system based on multichannel.The sensor-based system
1 includes：SPUID 11, integrated form reading circuit structure 12, second interface 123 and interface unit.
The SPUID 11 is used to change the magnetic signal detected using superconductive quantum interference technology
Into electric signal.The quantity of the SPUID 11 is multiple.
Specifically, the faint magnetic that the SPUID 11 detects certain frequency using superconductive quantum interference technology is believed
Number, such as heart magnetic, brain magnetic, nuclear magnetic resonance or geophysics magnetic signal, and according to the magnetic signal detected change itself etc.
Resistance is imitated, to export corresponding electric signal.In the non-interference induced environment of each SPUID 11
Magnetic signal, and the induced signal sensed is exported by the output end of itself, that is to say, that each Superconducting Quantum
Interfered device 11 and the subsequent conditioning circuit connected constitute a single passage.
The integrated form reading circuit structure 12 is connected with multiple SPUIDs 11, for by each institute
The induced signal that SPUID 11 sensed is stated to be amplified, feedback processing and exported.Wherein, it is described integrated
Formula reading circuit structure 12 can be integrated electric road plate.Preferably, each correspondence of integrated form reading circuit structure 12 connection 4-8
The individual SPUID 11.The quantity of the integrated form reading circuit structure 12 is according to actual superconducting quantum interference device
Depending on the quantity of part 11.
Wherein, the integrated form reading circuit structure 12 includes shell, and the first interface being encapsulated in the shell
122nd, second interface 123, multiple reading circuit plates 121.
Each SPUID 11 is connected by the first interface 122 with the correspondence of reading circuit plate 121.It is described
First interface 122 can be off-gauge straight-plate-type pin configuration, each pin one reading circuit plate 121 of correspondence it is defeated
Enter end, it is preferable that the first interface 122 is pluging connector interface, for example, the first interface 122 is D type interfaces.
The second interface 123 is exported the induced signal handled by each reading circuit plate 121.Described second
Interface 123 can be off-gauge straight-plate-type pin configuration, the output of one reading circuit plate 121 of each pin correspondence
End, it is preferable that the second interface 123 is pluging connector interface, for example, the second interface 123 is D type interfaces.
The induced signal that the reading circuit plate 121 is used to be provided the SPUID 11 is put
Greatly, feedback processing, and exported.
Specifically, each correspondence of reading circuit plate 121 receives the sense that a SPUID 11 is provided
Induction signal, and the induced signal is subjected to preposition amplification and integral feedback processing, to obtain the sense for being easy to subsequent conditioning circuit reading
Induction signal, and exported.For example, the reading circuit plate 121 includes：Amplifier and integral feedback circuit, the sensing letter
Number after amplifier amplifies, waveform processing is carried out by integral feedback circuit, and exported.
Preferably, as shown in Fig. 2 the integrated form reading circuit structure 12 also includes：3rd interface 124.
3rd interface 124 is powered to the integrated form reading circuit and is connected with external equipment.Specifically, institute
The energization pins in the 3rd interface 124 are stated with being connected after the feeder ear parallel connection in each reading circuit plate 121, the described 3rd connects
Data pin in mouth 124 is connected with the controlled switch in each reading circuit plate 121.Wherein, the 3rd interface 124 can
Think any standard interface, it is preferable that the 3rd interface 124 is I2C interface.The external equipment is one kind according to default journey
Sequence carries out the electronic equipment of mass data and logical operation, and it includes but is not limited to：Single-chip microcomputer, MCU etc..
As shown in Fig. 2 the reading circuit plate 121 includes：Reading circuit unit 126, control unit 127, digital voltage
Converting unit 125.
The reading circuit unit 126 connects the SPUID 11 by the first interface 122 correspondence,
Induced signal for the SPUID 11 to be exported is amplified, feedback processing and exported.
Specifically, the reading circuit unit 126 includes：Pass through the first interface 122 and the superconductive quantum interference
The connected amplifier of device 11, the feedback circuit being connected with the amplifier, wherein, being included in the feedback circuit is used to change
The controlled switch of the state of the reading circuit unit 126.
Described control unit 127 is connected with the interface 124 of reading circuit unit 126 and the 3rd, for based on by described
The control instruction that the external equipment of 3rd interface 124 access is provided controls the state of the reading circuit unit 126.Its
In, the state of the reading circuit unit 126 includes but is not limited to：It is many in debugging mode, working condition and reset state
Kind.Wherein, described control unit 127 can be MCU, computer equipment or embedded device etc..Wherein, each reading electricity
Connect after the control line parallel of control unit 127 in road plate 121 with the data pin of the 3rd interface 124.
For example, the control of " making reading circuit plate a1 be debugging mode " that the 3rd interface is sent to external equipment
Instruction, the 3rd interface transports to the control instruction control unit of each reading circuit plate, then each described control unit pair
The address of the control instruction is parsed, to determine whether the addresses match with itself, wherein, reading circuit plate a1 control
Unit processed determines control unit being used for the reading circuit unit of processing control instruction, then the reading circuit plate a1
The controlled switch outputs level signals of reset, then the reading circuit unit be adjusted under the control of the level signal debugging
State.
The digital voltage converting unit 125 is connected with the interface 124 of reading circuit unit 126 and the 3rd, for
By the 3rd interface 124 to the reading circuit unit 126 connected and by institute under the control of described control unit 127
Reading circuit unit 126 is stated to power to corresponding SPUID 11.Wherein, in each reading circuit plate 121
Power pins after the power sources in parallel of digital voltage converting unit 125 with the 3rd interface 124 connect.
Specifically, the Power convert that the digital voltage converting unit 125 is provided the 3rd interface 124 is into described
Control unit 127 passes through the reading circuit in bias voltage determined by debugging mode and offset voltage, and by bias voltage
Unit 126 is supplied to corresponding SPUID 11, and the offset voltage is supplied into the reading circuit unit
126, to carry out zeroing processing.
As a kind of preferred scheme, as shown in figure 3, the integrated form reading circuit structure 12 also includes：Heat sink 128.
The heat sink 128 is spaced each reading circuit plate 121.Wherein, the material of the heat sink 128 is aluminium or copper
Deng heat dissipation metal material.
Specifically, one end of the fin is fixed on the inside of the shell of the integrated form reading circuit structure 12, and with
Grid by each reading circuit plate 121 packaged by the integrated form reading circuit structure 12 separately, wherein, the radiating
Piece can be full grid or half grid, it is preferable that the fin is half grid, then is arranged on
The fin of inner surface of outer cover toward each other, half grid is merged and helps grid.
As another preferred scheme, in order to reduce SPUID 11 and integrated form reading circuit structure as far as possible
Conveying length (the biography i.e. between SPUID 11 and integrated form reading circuit structure 12 of induced signal between 12
The length of defeated line), the superconductive quantum interference sensor-based system 1 based on multichannel also includes：Assembling parts 17, shielding shell
18th, container 19.As shown in Figure 4,5.
The assembling parts 17 are by being fixed together that each integrated form reading circuit structure 12 is arranged.
Specifically, the assembling parts 17 include：Interface fixed plate, installation bottom parts 172.
The interface fixed plate is used for consolidating that the first interface 122 in each integrated form reading circuit structure 12 is arranged
It is scheduled on together.
Specifically, each first interface 122 is fixed in the interface fixed plate according to the arrangement of row or column, superconduction amount of interference
The transmission line of sub- device connects the first interface 122 from the surrounding of the interface fixed plate, and the interface fixed plate surrounding is also
Provided with mounting hole, each mounting hole is mutually fixed by bolt with the installation bottom parts 172.
Preferably, if being fixed with multiple first interfaces 122 in the interface fixed plate, each first interface 122 according to
Matrix form concentrates arrangement.
The installation bottom parts 172 are located at below the interface fixed plate and with through hole, and the installation bottom parts 172 are also
Extended downwardly along the through hole.Wherein, the installation bottom parts 172 are metal structure.
Specifically, the transmission line of each SPUID 11 is passed through in the through hole and the interface fixed plate
First interface 12213 be connected.
It is connected above shielding shell 18 and the assembling parts 17, for by all integrated form reading circuits
Structure 12 is sealed.Wherein, the shielding shell 18 is metal material.
Specifically, the shielding shell 18 includes side wall and cover plate.The side wall is centered around all integrated forms and read
Around circuit structure 12 and it is fixed on above the interface fixed plate, the cover plate is fixed on above the side wall, and will be each
The interface 124 of second interface 123 and the 3rd is drawn, described so that the second interface 123 is exported each induced signal
3rd interface 124 is connected with external equipment and power supply.
The container 19 below the assembling parts 17 with being connected, for being provided for the SPUID 11
Superconduction environment.
Specifically, the container 19 is located at the lower section for installing bottom parts 172, and will be each described in the container 19
Through hole of the transmission line of SPUID 11 sealedly from the installation bottom parts 172 stretches out.Wherein, the superconducting ring
Border includes：Liquid nitrogen or liquid helium environment.
Preferably, the superconductive quantum interference sensor-based system 1 based on multichannel also includes：In the shielding He of shell 18
Heat dissipation channel 181,191 is equipped with container 19, wherein, the heat dissipation channel 191 in the container shields dissipating for shell with described
The passage of heat 181 is connected.
Specifically, heat emission hole is provided with the side wall or cover plate of the shielding shell 18, in the shielding shell 18
Portion is provided with the heat dissipation channel 181 communicated with the heat emission hole being separated out with metallic plate, wherein, the heat dissipation channel 181 is according to gas
Flow away and zigzag passage is set to the principle with hot gas light cold air weight；
Equally, heat dissipation channel 191 also is provided with the container 19, on the heat dissipation channel 191 and the assembling parts 17
Heat emission hole communicate, the heat dissipation channel 181 is communicated with each other with heat dissipation channel 191 by respective heat emission hole.
Thus, when SPUID work produces heat, the liquid nitrogen or liquid in the superconduction environment are made
Helium is evaporated in heat dissipation channel 181 along heat dissipation channel 191, and integrated to reduce using the nitrogen or the low temperature of helium evaporated
Heat produced by formula reading circuit structure, meanwhile, should under the cooperation of the heat sink in the integrated form reading circuit structure
The mode of kind can equably remove the heat inside integrated form reading circuit structure.
Wherein, the cover plate sealedly can be connected with the side wall, can also blow-by be connected with side wall, if described
Cover plate is sealed with side wall, then radiating venthole is additionally provided with the cover plate.
It is further preferable that making described to prevent the nitrogen or helium that evaporate from being condensed in the heat dissipation channel 181
Each reading circuit plate in integrated form reading circuit structure makes moist, the gas in heat dissipation channel 191 in the container 19 with it is outer
After the air that the air pump in portion is conveyed is mixed, in the heat dissipation channel 181 for transporting to the shielding shell 18.
In summary, the superconductive quantum interference sensor-based system of the invention based on multichannel, each superconducting quantum interference device
Part one reading circuit plate of correspondence, realizes completely self-contained induced signal processing transmission channel, meanwhile, reading circuit plate is given
It is highly integrated, the volume of the superconductive quantum interference sensor-based system of multichannel can be effectively reduced, it is easily portable；In addition, every
The control unit and digital voltage conversion unit of debugging reading circuit unit are set in individual reading circuit plate, it can be ensured that each to read
Circuit unit individually, be independent of each other debugged using preceding, reset work, and due to being set on each reading circuit plate
Single control unit and digital voltage conversion unit are put so that there is no signal interference between each reading circuit plate, without carrying out
Signal synchronization process, effectively simplifies the complexity of the superconductive quantum interference sensor-based system of multichannel；Further, by multiple reading circuits
Plate is integrated, and is isolated with heat sink, is provided heat dissipation channel, can effectively solve dissipating for highly integrated reading circuit plate
Heat problem；In addition, by integrated form reading circuit structure and each SPUID assembling parts, container, shielding shell
It is isolated, the transmission range between integrated form reading circuit structure and each SPUID can greatly be shortened, had
Effect reduces the external interference that induced signal is subject in transmission.So, the present invention effectively overcomes of the prior art a variety of scarce
Put and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (11)
1. a kind of superconductive quantum interference sensor-based system based on multichannel, it is characterised in that at least include：
Multiple SPUIDs；
At least one integrated form reading circuit structure, including：
Multiple reading circuit plates, connect one to one with the multiple SPUID, for by each superconduction amount
The induced signal that sub- interfered device is provided is amplified, feedback processing, and is exported；Wherein, each reading circuit plate
Between be additionally provided with heat sink for being spaced adjacent reading circuit plate；One end of each heat sink is fixed on described integrated
On the inside of the shell of formula reading circuit structure, and adjacent heat sink one end be individually fixed in upper surface on the inside of the shell and
Lower surface；
The first interface that each SPUID is connected with each reading circuit plate correspondence；
The second interface that induced signal handled by each reading circuit plate is exported.
2. the superconductive quantum interference sensor-based system according to claim 1 based on multichannel, it is characterised in that described integrated
Formula reading circuit structure also includes：The 3rd interface powered and be connected with external equipment to the integrated form reading circuit.
3. the superconductive quantum interference sensor-based system according to claim 2 based on multichannel, it is characterised in that the reading
Circuit board includes：
The reading circuit unit being connected with the first interface, second interface and the 3rd interface；
It is connected with the reading circuit unit and the 3rd interface and for being set based on the outside accessed by the 3rd interface
The standby control instruction provided controls the control unit of the state of the reading circuit unit；
The digital voltage converting unit being connected with the reading circuit unit and the 3rd interface, for the control in described control unit
System is lower to be surpassed by the 3rd interface to the reading circuit unit connected and by the reading circuit unit to corresponding
Quantum interference device is led to power.
4. the superconductive quantum interference sensor-based system according to claim 1 based on multichannel, it is characterised in that described first
Interface and second interface are pluging connector interface.
5. the superconductive quantum interference sensor-based system according to claim 2 based on multichannel, it is characterised in that the described 3rd
Interface is I2C interface.
6. the superconductive quantum interference sensor-based system according to claim 1 based on multichannel, it is characterised in that described to be based on
The superconductive quantum interference sensor-based system of multichannel also includes：Each integrated form reading circuit structure arrangement is fixed together
Assembling parts.
7. the superconductive quantum interference sensor-based system according to claim 6 based on multichannel, it is characterised in that the assembling
Part includes：
Interface fixed plate, for the first interface arrangement in each integrated form reading circuit structure to be fixed together；
Below the interface fixed plate and the installation bottom parts with through hole, for by each superconducting quantum interference device
The transmission line of part is connected by the through hole with the first interface in the interface fixed plate, wherein, the installation bottom parts edge
The through hole is extended downwardly.
8. the superconductive quantum interference sensor-based system according to claim 6 based on multichannel, it is characterised in that described to be based on
The superconductive quantum interference sensor-based system of multichannel also includes：Will be all described with being connected and being used for above the assembling parts
The shielding shell that integrated form reading circuit structure is encapsulated.
9. the superconductive quantum interference sensor-based system according to claim 8 based on multichannel, it is characterised in that described to be based on
The superconductive quantum interference sensor-based system of multichannel also includes：With the container being connected below the assembling parts, for be described
SPUID provides superconduction environment.
10. the superconductive quantum interference sensor-based system according to claim 9 based on multichannel, it is characterised in that the base
Also include in the superconductive quantum interference sensor-based system of multichannel：Heat dissipation channel is equipped with the shielding shell and container, its
In, the heat dissipation channel in the container is connected with the heat dissipation channel of the shielding shell.
11. the superconductive quantum interference sensor-based system according to claim 9 based on multichannel, it is characterised in that the base
Also include in the superconductive quantum interference sensor-based system of multichannel：Heat dissipation channel is equipped with the shielding shell and container, its
In, after the air that the gas in heat dissipation channel in the container is conveyed with outside air pump is mixed, transport to the screen
In the heat dissipation channel for covering shell.
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| CN201310440262.5A CN104459572B (en) | 2013-09-24 | 2013-09-24 | Superconductive quantum interference sensor-based system based on multichannel |
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| CN201310440262.5A CN104459572B (en) | 2013-09-24 | 2013-09-24 | Superconductive quantum interference sensor-based system based on multichannel |
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| CN106767944B (en) * | 2016-11-30 | 2019-02-22 | 中国科学院上海微系统与信息技术研究所 | Low-temperature superconducting reading circuit and read-out system based on ERSFQ circuit |
| CN109211393A (en) * | 2018-10-30 | 2019-01-15 | 无锡法尔胜光电科技有限公司 | A kind of fibre optic hydrophone multichannel integrated photodetector component and its processing technology |
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| JP2779638B2 (en) * | 1989-03-22 | 1998-07-23 | 横河電機株式会社 | Multi-channel squid magnetometer |
| JPH04250378A (en) * | 1991-01-09 | 1992-09-07 | Fujitsu Ltd | Multichannel squid fluxmeter |
| JPH11118893A (en) * | 1997-10-17 | 1999-04-30 | Daikin Ind Ltd | Squid flux meter |
| CN1114170C (en) * | 1998-11-10 | 2003-07-09 | 中国科学院物理研究所 | Computer real-time data acquisition and processing system |
| CN1167189C (en) * | 2000-12-11 | 2004-09-15 | 武汉大学 | Multichannel digital automatic gain control method and controller |
| CN2622779Y (en) * | 2003-05-17 | 2004-06-30 | 哈尔滨北奥振动技术开发有限责任公司 | Multichannel large capacity synchronous data collector |
| CN2739694Y (en) * | 2004-09-21 | 2005-11-09 | 北京大学 | Superconducting quantuminterferometer computer interface device |
| KR101012107B1 (en) * | 2009-04-22 | 2011-02-07 | 한국표준과학연구원 | Data acquisition system of multi-channel SQUID signal |
| US8973378B2 (en) * | 2010-05-06 | 2015-03-10 | General Electric Company | System and method for removing heat generated by a heat sink of magnetic resonance imaging system |
| CN101923153B (en) * | 2010-06-25 | 2013-08-21 | 中国科学院上海微系统与信息技术研究所 | Calibration method for multichannel SQUID (Superconducting Quantum Interference Device) biological magnetic system |
| CN203480006U (en) * | 2013-09-24 | 2014-03-12 | 中国科学院上海微系统与信息技术研究所 | Superconducting quantum interference sensing system based on multiple channels |
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