CN109541702A - A kind of big depth MRS emitting-receiving system and detection method - Google Patents
A kind of big depth MRS emitting-receiving system and detection method Download PDFInfo
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Abstract
The present invention relates to geophysical exploration fields, it is particularly a kind of big depth MRS emitting-receiving system and detection method, it include: master system, master controller, multiple transmitting subsystems and multiple transmitting coils corresponding with multiple transmitting subsystem quantity, receiving subsystem and receiving coil, the multiple transmitting subsystem includes high-power out-put supply, storage capacitor, transmitting bridge and matches humorous capacitor, wherein receiving coil is multiple, it can work at the same time, can also be used as the reference coil of other coils.It improves emission depth and is analyzed convenient for subsequent data.
Description
Technical field
The present invention relates to geophysical exploration fields, particularly for a kind of big depth MRS emitting-receiving system and
Detection method.
Background technique
Water resource is to maintain the valuable source of human society existence, with the development of science and technology, population increases rapidly, water is provided
Source shortage problem is the problem that countries in the world face.Since China is population amount big country, the shortage of water resources problem faced is more
It is to be particularly acute, at the same time, has some tunnels, the water resource in mine that can also cause some disaster water accidents, it is raw to the mankind
Work adversely affects, and threatens the life security of construction personnel, therefore how accurate, safety, the carry out water resource without destruction
Detection has a very important significance.Nuclear magnetic resonance Detection Techniques (MagneticResource Sounding, MRS) are at present
A kind of current method and technology of the direct detection underground water of no destruction unique in the world, detects, tunnel, mine in groundwater resources
Empty water detection, dam leakage etc. also achieve extraordinary application effect to well always.However nuclear magnetic resonance detection system due to by
The limitation of emission current and emitting voltage, the investigation depth of nuclear magnetic resonance have certain limitation, general transmitting coil it is straight
Diameter is approximately equal to the subterranean depth that can be detected, so to increase investigation depth will increase the area of transmitting coil, works as transmitting
After area coil increases, the load impedance of transmitting coil be will increase, and require when emitting the emission current of same size bigger
Emitting voltage, but due to the limitation of storage capacitor load voltage value, limit the maximum value of emitting voltage, i.e. limitation nuclear-magnetism is total
Vibration investigation depth.
Patent CN106886052A disclose " a kind of high-power nuclear magnetic resonance visit water installations and its field application method " its
Propose a kind of high-power nuclear magnetic resonance and visit water installations and its field application method, be based on more storage capacitors group cascade emissions,
The mode of charged in parallel realizes high-power transmitting and efficiency operation that water installations are visited in magnetic resonance, but the invention is with three groups
Storage capacitor parallel connection but only improves 1.73 times of emitting voltage, 1.75 times of emission depth, does not reach 3 times of promotion effect
Rate, furthermore the invention is to substantially increase emitting voltage and emission current, bigger induced electricity can be induced in receiving coil
Damage of the kinetic potential to receiving instrument is very big.
Summary of the invention
Technical problem to be solved by the present invention lies in providing a kind of big depth MRS emitting-receiving system and detection method,
In the case where not improving emission current or emitting voltage, investigation depth is improved.
The invention is realized in this way
A kind of big depth MRS emitting-receiving system, comprising: master system, master controller, multiple transmitting subsystems, with
And multiple transmitting coils corresponding with multiple transmitting subsystem quantity, receiving subsystem and receiving coil, the multiple transmitting
Subsystem includes high-power out-put supply, storage capacitor, transmitting bridge and matches humorous capacitor, in which:
Master system is connected master control system and is sent associated transmissions electric current based on the man-machine interface of LABVIEW software programming
Parameter receives and shows the acquisition data that analog-to-digital conversion module is sent back in receiving subsystem；
Master controller receives the instruction that master system is sent and controls large power supply output voltage, generates driving bridge
Larmor frequency square-wave signal give respectively transmitting subsystem transmitting bridge, while master controller generate GPS synchronization signal give
Multiple transmitting subsystems, the transmitting bridge for emitting subsystem make multiple groups emit subsystem synchronized transmissions；
Large power supply, the order for receiving main controller generate specified output voltage to storage capacitor；
Storage capacitor will give transmitting bridge after the voltage energy storage of large power supply output；
Transmitting bridge, when GPS synchronization signal then, receive master controller generate Larmor frequency square-wave signal through passing a bridge
The electricity of storage capacitor storage is passed through after the driver of road and matches humorous capacitor firing backward coil transmissions current signal；
With humorous capacitor, transmitting bridge and transmitting coil are connected, constitutes series LC resonant with transmitting coil, transmitting bridge is defeated
Square-wave signal out switchs to sine wave signal；
GPS synchronization signal will export synchronization signal to multiple groups and emit subsystem through main controller controls: transmitting subsystem
Transmitting bridge so that it is generated synchronous transmitting signal；
Transmitting coil, connect corresponding transmitting subsystem matches humorous capacitor, flows through current signal, generates the friendship of specific direction
Electromagnetic Field；
Receiving coil is transferred to the signal condition mould of receiving subsystem after receiving the MRS signal that emission current signal generates
Block；
Signal conditioning module, connection master controller receive the amplification factor parameter of master controller setting, connect multiple receptions
Coil, it is defeated after the preposition amplification of parameter progress that received MRS signal is sent according to master controller, filtering, postposition amplification conditioning
Signal is to analog-to-digital conversion module out；
Analog-to-digital conversion module, the analog signal that receiving signal manages module output carry out analog-to-digital conversion, are converted into digital letter
It is handled and is shown to upper computer software after number.
Further, transmitting coil is formed using single the number of turns coil winding of same specification, turns to the same ruler of side length
Very little identical square coil, the transmitting coil are at least four, the quantitative commitments transmitting coil arrangement of the transmitting coil
The latter square.
Further, high-power sine wave signal is generated in transmitting coil, transmitting coil passes through same big in synchronization
It is small, the electric current in same direction.
Further, receiving coil constitutes round search coverage using multiturn number coil, and the center of receiving coil will be with hair
The square center position that ray circle is constituted is overlapped, and the diameter of receiving coil guarantees that receiving coil all standing or part cover
All transmitting coils.
Further, the transmitting coil is 4n, and wherein n takes 1,2,3 ..., and every four transmitting coils are one group of configuration
One receiving coil, the square center position that the center of receiving coil will be constituted with transmitting coil are overlapped, the receiving coil
Part covers four transmitting coils, if receiving coil is multiple, the signal conditioning module includes that the reception of respective numbers is logical
Road.
A kind of big depth MRS transmitting reception detection method, comprising the following steps:
Arrange transmitting coil and receiving coil；
Large power supply output voltage, the Larmor frequency of emission current, letter are set in master system man-machine interface
Then the amplifier magnification ratio of number conditioning module, filtering bandwidth parameter start to emit；
Master controller receive master system transmission parameter and control command after to multiple groups transmitting subsystem big function
Rate power supply and transmitting bridge send control signal, while GPS synchronization signal being guaranteed to the transmitting bridge of multiple groups transmitting subsystem
Multiple groups emit subsystem synchronized transmissions；
After transmitting subsystem receives control signal, the voltage that large power supply exports certain amplitude is kept to storage capacitor
After voltage give transmitting bridge, when GPS synchronization signal then, multiple groups transmitting subsystem transmitting bridge synchronization start transmitting master
The current signal of specific frequency transmitted by controller, after the LC resonance circuit constituted with humorous capacitor and transmitting coil
High-power sine wave signal is generated in transmitting coil；
After transmitting stops, the MRS sensed in main controller controls receiving subsystem acquisition multiturn number receiving coil believes
Number, signal conditioning module is carried out after the conditioning of analog signal by amplification filtering parameter transmitted by master controller to analog-to-digital conversion mould
Block is transferred to master system after carrying out analog signal to the conversion of digital signal.
Further, arrangement transmitting coil and receiving coil include: single the number of turns line that transmitting coil uses same specification
Circle coiling forms, and turns to the identical square coil of side length comparable size, the transmitting coil is at least four, the transmitting
The quantitative commitments transmitting coil of coil arranges the latter square；Receiving coil constitutes round detecting area using multiturn number coil
Domain, the square center position that the center of receiving coil will be constituted with transmitting coil are overlapped, and the diameter of receiving coil guarantees
Receiving coil all standing or part cover all transmitting coils, according to search coverage, select transmitting coil therein in same a period of time
Quarter passes through same size, the current emission in same direction.
Further, it is 4n that arrangement transmitting coil and receiving coil, which include: the transmitting coil, wherein n take 1,2,
3 ..., every four transmitting coils are one group of configuration, one receiving coil, and the center of receiving coil will be constituted just with transmitting coil
Square central position is overlapped, and the receiving coil all standing or part cover four transmitting coils, if transmitting coil is multiple,
Signal conditioning module includes the receiving channel of respective numbers, and the signal of receiving coil is received according to timing, according to search coverage, choosing
It selects transmitting coil therein and passes through same size, the current emission in same direction in synchronization.
Further, high-power sine wave signal is generated in whole transmitting coils, each transmitting coil is logical in synchronization
Cross same size, the electric current in same direction.
Further, it repeat its transmission and receives data at least 16 times, master system deposits multiple received data
Storage superposition, calculates, display, and the amplitude of noise signal is reduced by way of multiple stacking.
Compared with prior art, the present invention beneficial effect is: the present invention is not increasing emitting voltage and emission current
In the case of, it is effectively increased the equivalent length of side of transmitting coil by way of multiple groups coil combined detection, it is total to increase nuclear-magnetism
The investigation depth of vibration provides technical support for the great deep exploration of nuclear magnetic resonance, and the present invention simultaneously has certain expansion, adopts
It can reach 2 times of levels of former investigation depth with 4 groups of transmitting coils, also expansion is such as 9 groups of coils greater than 4 groups, that is, be can reach
3 times of levels of former investigation depth, and so on.The present invention is increased in the case where not changing emitting voltage and emission current
Transmitting coil equivalent area, increases investigation depth, effectively prevents high emission voltage and current to detection personnel and instrument
Damage, while can gradually expand investigation depth.
The present invention generates GPS synchronization signal by master controller and synchronizes to multiple transmitting subsystems, emits subsystem
Transmitting bridge make multiple groups emit subsystem synchronized transmissions, pass through large power supply export same size electric current, it is ensured that it is multiple
Transmitting coil has the electric current of same size and direction.
Transmitting coil of the present invention be less be four, the quantitative commitments transmitting coil of the transmitting coil arrange the latter pros
Shape, quantity are arbitrarily expanded, and the square center position that the center of such receiving coil will be constituted with transmitting coil is overlapped, and receive line
The diameter of circle guarantees that receiving coil all standing or part cover all transmitting coils, can collect all transmitting coil coverings
Region signal.
For the present invention when transmitting coil is 4n, wherein n takes 1,2,3 ..., and every four transmitting coils are one group configuration one
Receiving coil, the square center position that the center of receiving coil will be constituted with transmitting coil are overlapped, and the receiving coil covers entirely
Lid or part cover four transmitting coils, thus are avoided that receiving coil much the problem of causing received signal misalignment.In addition,
With multiple receiving coils, the reference coil of other coils can be used as between receiving coil, for the analysis of subsequent data,
Such as the removal of ambient noise.
Detailed description of the invention
Fig. 1 is the big depth MRS emitting-receiving system functional block diagram of one embodiment of the invention；
The equivalent current that Fig. 2 is emission current when being clockwise；
The equivalent current that Fig. 3 is emission current when being counterclockwise；
Fig. 4 puts schematic diagram for transmitting and receiving coil.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
A kind of big depth MRS emitting-receiving system, comprising: master system, master controller, multiple transmitting subsystems, with
And multiple transmitting coils corresponding with multiple transmitting subsystem quantity, receiving subsystem and receiving coil, the multiple transmitting
Subsystem includes high-power out-put supply, storage capacitor, transmitting bridge and matches humorous capacitor, in which:
Master system is connected master control system and is sent associated transmissions electric current based on the man-machine interface of LABVIEW software programming
Parameter receives and shows the acquisition data that analog-to-digital conversion module is sent back in receiving subsystem；
Master controller receives the instruction that master system is sent and controls large power supply output voltage, generates driving bridge
Larmor frequency square-wave signal give respectively transmitting subsystem transmitting bridge, while master controller generate GPS synchronization signal give
Multiple transmitting subsystems, the transmitting bridge for emitting subsystem make multiple groups emit subsystem synchronized transmissions；
Large power supply, the order for receiving main controller generate specified output voltage to storage capacitor；
Storage capacitor will give transmitting bridge after the voltage energy storage of large power supply output；
Transmitting bridge, when GPS synchronization signal then, receive master controller generate Larmor frequency square-wave signal through passing a bridge
The electricity of storage capacitor storage is passed through after the driver of road and matches humorous capacitor firing backward coil transmissions current signal；
With humorous capacitor, transmitting bridge and transmitting coil are connected, constitutes series LC resonant with transmitting coil, transmitting bridge is defeated
Square-wave signal out switchs to sine wave signal；
GPS synchronization signal will export synchronization signal to multiple groups and emit subsystem through main controller controls: transmitting subsystem
Transmitting bridge so that it is generated synchronous transmitting signal；
Transmitting coil, connect corresponding transmitting subsystem matches humorous capacitor, flows through current signal, generates the friendship of specific direction
Electromagnetic Field；
Receiving coil is transferred to the signal condition mould of receiving subsystem after receiving the MRS signal that emission current signal generates
Block；
Signal conditioning module, connection master controller receive the amplification factor parameter of master controller setting, connect multiple receptions
Coil, it is defeated after the preposition amplification of parameter progress that received MRS signal is sent according to master controller, filtering, postposition amplification conditioning
Signal is to analog-to-digital conversion module out；
Analog-to-digital conversion module, the analog signal that receiving signal manages module output carry out analog-to-digital conversion, are converted into digital letter
It is handled and is shown to upper computer software after number.
Transmitting coil is formed using single the number of turns coil winding of same specification, and it is identical just to turn to side length comparable size
Square coil, the transmitting coil are at least four, and the quantitative commitments transmitting coil of the transmitting coil arranges the latter pros
Shape.
In one embodiment, high-power sine wave signal is generated in transmitting coil, transmitting coil passes through in synchronization
Same size, the electric current in same direction.
In one embodiment, receiving coil constitutes round search coverage, the center of receiving coil using multiturn number coil
The square center position to constitute with transmitting coil is overlapped, and the diameter of receiving coil guarantees receiving coil all standing or portion
Divide covering all transmitting coils.
In one embodiment, transmitting coil is 4n, and wherein n takes 1,2,3 ..., and every four transmitting coils assemble for one
A receiving coil is set, the square center position that the center of receiving coil will be constituted with transmitting coil is overlapped, the reception line
It encloses all standing or part covers four transmitting coils, if transmitting coil is multiple, the signal conditioning module includes respective counts
The receiving channel of amount.
Embodiment 1:
Such as Fig. 1, a kind of big depth MRS emitting-receiving system, including master system connection master controller and reception subsystem
Analog-to-digital conversion module in system, master controller connection GPS synchronization signal and four groups of transmitting subsystems: it is respectively as follows: transmitting subsystem
I emits subsystem II, emits subsystem III, emits large power supply module and transmitting bridge module in subsystem IV, GPS
Synchronization signal is separately connected four groups of transmitting subsystems: transmitting subsystem I emits subsystem II, emits subsystem III, transmitting
Transmitting bridge module in system IV, four groups of transmitting subsystems: transmitting subsystem I emits subsystem II, constitutes consistent, difference
It is made of large power supply connection storage capacitor connection transmitting bridge connection with humorous capacitor, four groups of transmitting subsystems: transmitting subsystem
Unite I, emits subsystem II, emits subsystem III, and transmitting subsystem IV is separately connected four groups of transmitting coils: transmitting subsystem I,
Emit subsystem II, emit subsystem III, emit subsystem IV, multiturn number receiving coil connects the signal condition of reception system
Module, signal conditioning module is by analog-to-digital conversion module by data to master system.
Such as Fig. 2, pass through equivalent current when clockwise emission current in transmitting coil, according to Ampere's law,
The electromagnetic field for then generating vertical paper direction inwards, because the current direction of four groups of transmitting coils is identical, then four groups of transmitting coils
In generate the electromagnetic field in vertical paper direction inwards, then be equivalent in figure big square wire shown in dotted line and pass through on an equal basis
The electric current of size, current direction are still clockwise.
Such as Fig. 3, be in transmitting coil by anticlockwise emission current when equivalent current, according to Ampere's law,
The electromagnetic field of vertical paper outward direction is then generated, because the current direction of four groups of transmitting coils is identical, then four groups of transmitting coils
In generate the electromagnetic field of vertical paper outward direction, then be equivalent in figure big square wire shown in dotted line and pass through on an equal basis
The electric current of size, current direction are still counterclockwise.
It is the schematic diagram of putting of transmitting and receiving coil such as Fig. 4, four groups of transmitting coils will successively adjacent clock-wise order
It puts, at the big square search coverage of 2 times of side length of an original transmitting coil after putting, in the centre bit of this big square
It sets and puts multiturn number receiving coil.
Embodiment 2
Difference from example 1 is that transmitting coil is 8, every four transmitting coils are one group configuration one and connect
Take-up circle, the square center position that the center of receiving coil will be constituted with transmitting coil are overlapped, receiving coil part covering four
A transmitting coil, if receiving coil is 2, the signal conditioning module includes the receiving channel of respective numbers, transmitting coil
Can be with synchronization by same size, same directional current emits, and receiving coil receives simultaneously, can also a part reception line
The transmitting coil of circuit covering does not work, reference coil of the receiving coil as other coils.To be conducive to subsequent data
Analysis.
Embodiment 3
A kind of big depth MRS transmitting of four transmitting coils receives detection method in the present embodiment, comprising:
1 landform detected as needed first has laid 4 groups of transmitting coils: transmitting coil 1, transmitting coil 2, transmitting coil
3, transmitting coil 4 makes four groups of transmitting coils put construction single 2 times of transmitting coil side length of the big pros of one side length clockwise
Shape region is as shown in Figure 4；
2 by 4 groups of transmitting subsystems: transmitting subsystem I emits subsystem II, emits subsystem III, emits subsystem IV
Respectively with 4 groups of transmitting coils: transmitting coil I, transmitting coil II, transmitting coil III, transmitting coil IV are connected；
3 connect multiturn number receiving coil and reception system, and by master control system and transmitting subsystem and receive subsystem
System connects, and opens master system.
4 are arranged large power supply output voltage, Larmor's frequency of emission current in master system software man-machine interface
Then rate, the amplifier magnification ratio of signal conditioning module, the parameters such as filtering bandwidth are clicked and start to emit；
5 master controllers receive host computer transmission parameter and control command after to four groups of transmitting subsystems high-power electricity
Source and transmitting bridge send control signal, while GPS synchronization signal being given to the transmitting bridge of four groups of transmitting subsystems, guarantee four groups
Emit subsystem synchronized transmissions；
After 6 four groups of transmitting subsystems receive control signal, the voltage that large power supply exports certain amplitude gives energy storage electricity
Hold keep voltage after give transmitting bridge, when GPS synchronization signal then, the transmitting bridge synchronization of four groups of transmitting subsystems starts
The current signal for emitting specific frequency transmitted by master controller, by the LC resonance electricity constituted with humorous capacitor and transmitting coil
High-power sine wave signal is generated behind road in transmitting coil, when emitting sine wave signal is to flow through transmitting coil clockwise,
Its equivalent current as shown in Fig. 2, when emit sine wave signal be pass counterclockwise through transmitting coil when, equivalent current such as Fig. 3 institute
Show
After 7 transmittings stop, main controller controls receive the MRS letter sensed in system acquisition multiturn number receiving coil
Number, signal conditioning module is carried out after the conditioning of analog signal by amplification filtering parameter transmitted by master controller to analog-to-digital conversion mould
Block is transferred to master system software after being converted to digital signal.
8, wherein step 5-7 will be repeated 16 times, and be exactly repeat its transmission and received data 16 times.
9, master system software stores 16 received data, is superimposed, is calculated and be shown.
Embodiment 4
With embodiment 3 the difference is that, including 8 transmitting coils, two receiving coils.
1 landform detected as needed first has laid 8 groups of transmitting coils: 4 groups of transmitting coils being made to put construction clockwise
One side length is the big square area of 2 times of single transmitting coil side length；Apart from this position, certain distance makes other 4 groups of transmittings again
Coil puts the big square area that one side length of construction is 2 times of single transmitting coil side length clockwise；
2 by 8 groups of transmitting subsystems: connecting respectively with 8 groups of transmitting coils；
3 connect 2 multiturn number receiving coils with reception system, and according to corresponding four emission lines of a receiving coil
Circle arrangement, and master control system and transmitting subsystem and receiving subsystem are connected, open master system.
4 are arranged large power supply output voltage, Larmor's frequency of emission current in master system software man-machine interface
Then rate, the amplifier magnification ratio of signal conditioning module, the parameters such as filtering bandwidth are clicked and start to emit；
5 master controllers receive host computer transmission parameter and control command after to four groups of transmitting subsystems high-power electricity
Source and transmitting bridge send control signal, while GPS synchronization signal being given to the transmitting bridge of four groups of transmitting subsystems, guarantee four groups
Emit subsystem synchronized transmissions；
After 6 eight groups of transmitting subsystems receive control signal, the voltage that large power supply exports certain amplitude gives energy storage electricity
Hold keep voltage after give transmitting bridge, when GPS synchronization signal then, the transmitting bridge synchronization of four groups of transmitting subsystems starts
The current signal for emitting specific frequency transmitted by master controller, by the LC resonance electricity constituted with humorous capacitor and transmitting coil
High-power sine wave signal is generated behind road in transmitting coil,
After 7 transmittings stop, main controller controls receive the MRS sensed in two multiturn number receiving coils of system acquisition
Signal, wherein all the way to it is deserved be four transmitting coils for not having emission current, as reference signal, signal conditioning module is by master
After being converted to digital signal to analog-to-digital conversion module after the conditioning of amplification filtering parameter progress analog signal transmitted by controller
It is transferred to master system, the analysis for environmental noise data；
8 master controllers receive host computer transmission parameter and control command after to 8 groups of transmitting subsystems high-power electricity
Source and transmitting bridge send control signal, while GPS synchronization signal being given to the transmitting bridge of 8 groups of transmitting subsystems, guarantee 8 groups of hairs
Penetrate subsystem synchronized transmissions；
After 9 eight groups of transmitting subsystems receive control signal, the voltage that large power supply exports certain amplitude gives energy storage electricity
Hold keep voltage after give transmitting bridge, when GPS synchronization signal then, the transmitting bridge synchronization of 8 groups of transmitting subsystems starts
The current signal for emitting specific frequency transmitted by master controller, by the LC resonance electricity constituted with humorous capacitor and transmitting coil
High-power sine wave signal is generated behind road in transmitting coil,
After 10 transmittings stop, being sensed in main controller controls reception two multiturn number receiving coils of system acquisition
MRS signal, signal conditioning module are carried out after the conditioning of analog signal by amplification filtering parameter transmitted by master controller to modulus
Conversion module is transferred to master system after being converted to digital signal；
11, wherein step 8-10 will be repeated 16 times, and be exactly repeat its transmission and received data 16 times.
12, host computer stores 16 received data, is superimposed, is calculated and be shown.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of big depth MRS emitting-receiving system characterized by comprising master system, master controller, multiple transmittings
Subsystem and multiple transmitting coils corresponding with multiple transmitting subsystem quantity, receiving subsystem and receiving coil, it is described
Multiple transmitting subsystems include high-power out-put supply, storage capacitor, transmitting bridge and match humorous capacitor, in which:
Master system is connected master controller and is sent associated transmissions electric current ginseng based on the man-machine interface of LABVIEW software programming
Number, receives and shows the acquisition data that analog-to-digital conversion module is sent back in receiving subsystem；
Master controller receives the instruction that master system is sent and controls large power supply output voltage, generates the drawing of driving bridge
More's frequency square wave signal gives the transmitting bridge of transmitting subsystem respectively, while master controller generates GPS synchronization signal to multiple
Emit subsystem, the transmitting bridge for emitting subsystem makes multiple groups emit subsystem synchronized transmissions；
Large power supply, the order for receiving main controller generate specified output voltage to storage capacitor；
Storage capacitor will give transmitting bridge after the voltage energy storage of large power supply output；
Transmitting bridge, when GPS synchronization signal then, receive master controller generate Larmor frequency square-wave signal by bridge drive
The electricity of storage capacitor storage is passed through after dynamic device and matches humorous capacitor firing backward coil transmissions current signal；
With humorous capacitor, transmitting bridge and transmitting coil are connected, constitutes series LC resonant with transmitting coil, by transmitting bridge output
Square-wave signal switchs to sine wave signal；
GPS synchronization signal will export synchronization signal to multiple groups and emit subsystem: emitting the hair of subsystem through main controller controls
Penetrating bridge makes it generate synchronous transmitting signal；
Transmitting coil, connect corresponding transmitting subsystem matches humorous capacitor, flows through current signal, generates the alternation electricity of specific direction
Magnetic field；
Receiving coil is transferred to the signal conditioning module of receiving subsystem after receiving the MRS signal that emission current signal generates；
Signal conditioning module, connection master controller receive the amplification factor parameter of master controller setting, connect multiple receiving coils,
Received MRS signal is subjected to preposition amplification according to the parameter that master controller is sent, is filtered, output signal after postposition amplification conditioning
To analog-to-digital conversion module；
Analog-to-digital conversion module, the analog signal that receiving signal manages module output carries out analog-to-digital conversion, after being converted into digital signal
It is handled and is shown to upper computer software.
2. big depth MRS emitting-receiving system described in accordance with the claim 1, it is characterised in that: transmitting coil uses same rule
Single the number of turns coil winding of lattice forms, and turns to the identical square coil of side length comparable size, the transmitting coil is at least
It is four, the quantitative commitments transmitting coil of the transmitting coil arranges the latter square.
3. big depth MRS emitting-receiving system described in accordance with the claim 1, it is characterised in that: generate big function in transmitting coil
Rate sine wave signal, transmitting coil pass through same size, the electric current in same direction in synchronization.
4. big depth MRS emitting-receiving system according to claim 2, it is characterised in that: receiving coil uses multiturn number
Coil constitutes round search coverage, and the square center position that the center of receiving coil will be constituted with transmitting coil is overlapped, and receives
The diameter of coil guarantees that receiving coil all standing or part cover all transmitting coils.
5. big depth MRS emitting-receiving system described in accordance with the claim 1, it is characterised in that: the transmitting coil is 4n,
Wherein n takes 1,2,3 ..., and every four transmitting coils are one group of configuration, one receiving coil, and the center of receiving coil will be with transmitting
The square center position that coil is constituted is overlapped, and the receiving coil part covers four transmitting coils, if receiving coil is more
When a, the signal conditioning module includes the receiving channel of respective numbers.
6. a kind of big depth MRS transmitting receives detection method, which comprises the following steps:
Arrange transmitting coil and receiving coil；
Large power supply output voltage, the Larmor frequency of emission current, signal tune are set in master system man-machine interface
The amplifier magnification ratio of module is managed, then filtering bandwidth parameter starts to emit；
Master controller receive master system transmission parameter and control command after to multiple groups transmitting subsystem high-power electricity
Source and transmitting bridge send control signal, while GPS synchronization signal is guaranteed multiple groups to the transmitting bridge of multiple groups transmitting subsystem
Emit subsystem synchronized transmissions；
After transmitting subsystem receives control signal, the voltage that large power supply exports certain amplitude keeps voltage to storage capacitor
Afterwards give transmitting bridge, when GPS synchronization signal then, multiple groups transmitting subsystem transmitting bridge synchronization start emit main control
The current signal of specific frequency transmitted by device is emitting after the LC resonance circuit constituted with humorous capacitor and transmitting coil
High-power sine wave signal is generated in coil；
After transmitting stops, the MRS signal sensed in main controller controls receiving subsystem acquisition multiturn number receiving coil, letter
Number conditioning module carried out by amplification filtering parameter transmitted by master controller after the conditioning of analog signal to analog-to-digital conversion module into
Master system is transferred to after row analog signal to the conversion of digital signal.
7. according to the method for claim 6, which is characterized in that arrangement transmitting coil and receiving coil include: transmitting coil
It is formed using single the number of turns coil winding of same specification, turns to the identical square coil of side length comparable size, the hair
Ray circle is at least four, and the quantitative commitments transmitting coil of the transmitting coil arranges the latter square；Receiving coil uses
Multiturn number coil constitutes round search coverage, the square center position weight that the center of receiving coil will be constituted with transmitting coil
It closes, the diameter of receiving coil guarantees that receiving coil all standing or part cover all transmitting coils, according to search coverage, choosing
It selects transmitting coil therein and passes through same size, the current emission in same direction in synchronization.
8. according to the method for claim 6, which is characterized in that arrangement transmitting coil and receiving coil include: the transmitting
Coil is 4n, and wherein n takes 1,2,3 ..., and every four transmitting coils are one group of configuration, one receiving coil, in receiving coil
The square center position that the heart will be constituted with transmitting coil is overlapped, and the receiving coil all standing or part cover four emission lines
Circle, if transmitting coil is multiple, signal conditioning module includes the receiving channel of respective numbers, receives receiving coil according to timing
Signal select transmitting coil therein to pass through same size, the electric current hair in same direction in synchronization according to search coverage
It penetrates.
9. method according to claim 6, it is characterised in that: generate high-power sine wave letter in whole transmitting coils
Number, each transmitting coil passes through same size, the electric current in same direction in synchronization.
10. according to the method for claim 6, which is characterized in that repeat its transmission simultaneously receives data at least 16 times, host computer system
System stores multiple received data, is superimposed, is calculated, is shown, the width of noise signal is reduced by way of multiple stacking
Degree.
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