CN103520836A - Uniform pulsed magnetic field generator on basis of Helmholtz coil and IGBT (Insulated Gate Bipolar Transistor) module - Google Patents
Uniform pulsed magnetic field generator on basis of Helmholtz coil and IGBT (Insulated Gate Bipolar Transistor) module Download PDFInfo
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Abstract
The invention provides a uniform pulsed magnetic field generator on the basis of a Helmholtz coil and an IGBT (Insulated Gate Bipolar Transistor) module, which comprises a power supply system, a pulse current forming system, a Helmholtz coil coil, a signal conversion system and a synchronous triggering module. After carrying out voltage reduction on an AC (Alternating Current) power supply into a DC (Direct Current), a switching power supply of the power supply system is respectively connected with the pulse current forming system, the signal conversion system and the synchronous triggering module and supplies power; the Helmholtz coil coil is connected with the pulse current forming system; the output end of an electrical-to-optical converter J2 of the signal conversion system is connected with the control end of a pulse forming module M1 in the pulse current forming system; and the output end of the synchronous triggering module is respectively connected with an electrical-to-optical converter J1 and the electrical-to-optical converter J2 of the signal conversion system. The uniform pulsed magnetic field generator has a high integration level, longer service life and higher working efficiency; a circuit volume is greatly reduced; and loss of the integral circuit is reduced.
Description
Technical field
The invention belongs to bioelectromagnetics technical field, be specifically related to the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module.
Background technology
Current, pulsed magnetic field, on the impact of cellularity and function and the therapeutical effect to organism, becomes the study hotspot of bioelectromagnetics technical field gradually.Abundant experimental results shows, from biological medical effect angle, thereby the action of a magnetic field can be by suppressing microvascular formation and blocking the nutrition supply that new vessels reduces tumor, make mitochondrion and rough endoplasmic reticulum edema in tumor cell and affect the metabolic function of tumor cell, tumor cell caryoplasm ratio is reduced and reduce its grade malignancy and the special-shaped speed of growth, regulation and control p53, Bcl-2 family, genes such as Cytochrome C and activate DNA restriction endonuclease and inducing apoptosis of tumour cell, the molten cancer ability that improves immunocyte improves immunologic function with engulfing the ability of apoptotic body, hinder DNA replication dna inhibition tumor cell mitosis, thereby reach killing tumor cell and suppress the effect that gross tumor volume increases.From bioelectrical effect angle, the action of a magnetic field has caused the variation of magnetic flux in cell and has caused producing faradic current on cell membrane, produces electric power and destroy cell membrane between faradic current and additional strong pulsed magnetic field; Charged particle in cell is subject to the impact of Lorentz force in magnetic field, within its movement locus is often constrained on Rameau radius, caused intracellular electronics and the ion can not normal delivery, thereby affect cell membrane transmembrane potential and intracellular free calcium ion concentration, thereby affect the normal physiological function of cell.
Summary of the invention
One of object of the present invention is to provide a kind of uniform pulse magnetic field generator based on Helmholtz coil and IGBT module, this device produces the very high pulse current of amplitude by IGBT modular circuit, the pulse current producing passes into after Helmholtz coil, by hollow volume generation uniform pulse magnetic field in the middle of two coils of Helmholtz coil.So tell in hollow volume before tumor tissues can being placed in, observe pulsed magnetic field under the various parameter combinations treatment effect to tumor tissues, draw thus corresponding parameters such as processing different tumor tissues required pulse magnetic field amplitude, steepness, action time, for processing tumor tissues accumulation experiment parameter and be correlated with and benefit our pursuits in succeeding impulse magnetic field.
For realizing the technical scheme that the object of the invention adopts, be such:
A uniform pulse magnetic field generator for Helmholtz coil and IGBT module, comprises that power-supply system, pulse current form system, Helmholtz coil device, signal translating system and synchronous trigger module, wherein
Described power-supply system, comprises power supply, HVDC module and Switching Power Supply, and described power supply is connected and powers with the input of HVDC module, the input of Switching Power Supply respectively; The alternating current power supply that described HVDC module provides described power supply is boosted and is converted to after direct current, is connected and powers with the input of IGBT single tube K1 in pulse current formation system; The alternating current power supply blood pressure lowering that described Switching Power Supply provides described power supply is be connected and power with pulse current formation system, signal translating system and the trigger module of synchronizeing respectively after direct current.
Described pulse current formation system comprises IGBT single tube K1, charging resistor R1, pulse generating module M1; Described IGBT single tube K1, charging resistor R1 and pulse generating module M1 are connected in series.
Described Helmholtz coil device comprises mounting plane, at least three Helmholtz coils that are fixed on the support column on mounting plane and are parallel to described mounting plane, described support column is equidistantly distributed on same circumference, wherein on each support column, all has cannelure I, cannelure II and annular boss; Described cannelure I is less than cannelure II to the distance of mounting plane to the distance of mounting plane, and described annular boss is between cannelure I and cannelure II; Described Helmholtz coil comprises coil I and coil II; Described coil I is stuck in cannelure I, thereby is fixed on support column; Described coil II is stuck in cannelure II, thereby is fixed on support column; Described coil I is less than coil II to the distance of mounting plane to the distance of mounting plane; Described Helmholtz coil device is connected with pulse current formation system.
Described signal translating system comprises electric to optic converter J1 and electric to optic converter J2; The outfan of described electric to optic converter J1 is connected with the control end of IGBT single tube K1 in pulse current formation system, the outfan of electric to optic converter J2 is connected with the control end of pulse shaping module M1 in pulse current formation system, and the sequential of exporting control signal in described electric to optic converter J1, electric to optic converter J2 is just contrary.
The outfan of described synchronous trigger module is connected with electric to optic converter J1 and the electric to optic converter J2 of signal translating system respectively.
Further, described wherein IGBT single tube K1 comprises DC-DC module, light/electric transducer, switch driver, IGBT and gate protection circuit, described DC-DC module receives the unidirectional current of Switching Power Supply input in power-supply system, the outfan of described DC-DC module is connected with the power end of described switch driver and light/electric transducer respectively, described light/electric transducer outputs a control signal to the control end of switch driver, the outfan output drive signal of described switch driver is to the grid of IGBT, the input of described light/electric transducer is connected with the electric to optic converter J1 in signal translating system by optical fiber, the input of described IGBT receives the electric current of power-supply system mesohigh DC Module input, and the outfan of described IGBT is connected with charging resistor R1, the input of described gate protection circuit is connected with the grid of described IGBT, and the outfan of gate protection circuit is connected with the outfan of IGBT.
Further, described pulse generating module M1 comprises impulse capacitor C1, discharge resistance R2 and IGBT module, described impulse capacitor C1 one end ground connection, the other end is connected with Helmholtz coil by discharge resistance R2, and the input that is energized to Helmholtz coil produces uniform magnetic field, the outfan of Helmholtz coil is connected with the input of IGBT module, and the outfan of IGBT module is connected with impulse capacitor C1 and ground connection; The driver input end of described IGBT module is connected with Switching Power Supply in described power-supply system, and the driver control end of described IGBT module is connected with electric to optic converter J2 in signal translating system by optical fiber.
Further, described Helmholtz coil is comprised of two identical coil L1, coil L2 of diameter, and the spacing between described coil L1, coil L2 is coil L1 or coil L2 diameter half.
Further, the 220V alternating current of the power acquisition in described power-supply system, HVDC module output ceiling voltage amplitude 4000V, maximum current amplitude 60mA.
Further, in described power-supply system, Switching Power Supply is converted to 220V alternating current after 15V unidirectional current with the input of the DC-DC module of described IGBT single tube K1 and is connected, and described DC-DC module is converted to 15V and 5V unidirectional current by 15V unidirectional current.
Further, three support columns of described Helmholtz coil device are disposed with lower cannelure, boss and upper cannelure from lower to upper, and described lower cannelure and upper cannelure are provided with Helmholtz coil.
The present invention adopts after above technical scheme, mainly has following beneficial effect:
1, the present invention adopts IGBT module, and integrated level is high, longer service life, operating frequency are higher, greatly dwindled circuit volume, and has reduced the loss of whole circuit.Compact conformation, rationally distributed, reduced the stray inductance of discharge loop, adopt noninductive resistance load, improved output pulse steepness.
2, the present invention adopts optical fiber as signal transmission passage, realizes the electrical isolation between strong, weak signal.Compare with the mode of conventional employing LMDS Light Coupled Device, the isolation voltage of optical fiber is higher, and fast response time.The high anti-interfering performance of optical fiber has avoided optical signal in transmitting procedure, to be subject to the electromagnetic interference of surrounding greatly.
3, the impulse current generator of the present invention's design adopts IGBT module, exportable: output pulse current amplitude 1500A.Pulse width 14 μ s, pulse rise times 4 μ s.Can be used in the high steepness of needs, amplitude pulse current application scenario.
4, the present invention has designed a kind of Helmholtz coil device, it comprises that 2 diameters are 20 or the coil of 10cm, be wire diameter and be the breach coil that the pyrite wire coiling of 0.5cm forms, be that the end of a thread, line tail two ends are used and do not link together as input, outfan, and 2 coil planes are 10 or 5cm through the spacing between fixing latter two coil of 3 lucite pillars.The pulse current of above-mentioned impulse current generator output passes in Helmholtz coil device after Helmholtz coil, the pulsed magnetic field rise time that in hollow volume between two coils, 99% homogeneous area obtains is 4 μ s, pulsewidth is 14 μ s, and pulsed magnetic field amplitude is 20Gs(Gauss) uniform pulse magnetic field.
5, this device adopts standardization, modularized design, simple in structure, for convenience detach and assembling.Machine volume is little, and integrated degree is high, easy and simple to handle, for experimental site, requires extremely low.
6, the IGBT modular circuit output pulse frequency that this device relates to is adjustable within the scope of 0.2Hz～46Hz, adjustable within the scope of 0.2Hz～46Hz thereby Helmholtz coil produces pulsed magnetic field frequency.Can effectively meet like this requirement of experiment pulse magnetic field frequency, be beneficial to and find the optimum frequency parameter of processing tumor tissues.
Accompanying drawing explanation
The indefiniteness embodiment that device of the present invention can provide by accompanying drawing further illustrates.
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the structural representation of IGBT single tube K1 in embodiment 1 pulse current formation system.
Fig. 3 is the structural representation of pulse generate module M1 in embodiment 1 pulse current formation system.
Fig. 4 is the Helmholtz coil device each several part composition diagram of embodiment 1.
In figure, 1 power-supply system, 2 pulse currents form system; 3 Helmholtz coil devices, 4 signal translating systems, 5 synchronous trigger modules; 6DC-DC module, 7 light/electric transducer, 8 switch drivers; 9IGBT, 10 gate protection circuits, 11 Helmholtz coils; 12IGBT module, 13 support columns, 14 boss; 15-1 cannelure I, 15-2 cannelure II.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention, only limits to following embodiment.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacements and change, all should be included in the scope of the present invention.
As shown in Fig. 1～4, a kind of uniform pulse magnetic field generator based on Helmholtz coil and IGBT module, mainly comprises that power-supply system 1, pulse current form system 2, Helmholtz coil device 3, signal translating system 4, synchronous trigger module 5.
Described power-supply system 1, comprises power supply 1-1, HVDC module 1-2, Switching Power Supply 1-3.The power supply 1-1 telling is 220V civil power, is connected, with thinking that HVDC module 1-2 and Switching Power Supply 1-3 provide alternating current power supply by wire with HVDC module 1-2, Switching Power Supply 1-3 input.HVDC mould 1-2 piece output ceiling voltage amplitude 4000V, the galvanic commercial module of maximum current amplitude 60mA told, the outfan of the HVDC module 1-2 telling forms IGBT single tube K1 input in system 2 by wire and pulse current and is connected, with thinking that aforementioned pulse current forms system 2 charge power supply is provided.The commercial element of Switching Power Supply 1-3(of telling) input is connected with told power supply 1-1 by wire, the Switching Power Supply 1-3 telling is converted to 220V alternating current after 15V unidirectional current, by wire, be connected with pulse current formation system 2, signal translating system 4 and the trigger module 5 of synchronizeing, with thinking that above-mentioned a few part provides DC source.
Described pulse current formation system comprises IGBT single tube K1, charging resistor R1 and pulse shaping module M1.Described IGBT single tube K1 comprises DC-DC module 6, light/electric transducer 7, switch driver 8, IGBT9 and gate protection circuit 10, appeals front 4 and is integrated on same pcb board.In aforementioned power source system 1, Switching Power Supply 1-3 is connected with the input of the DC-DC module 6 of described IGBT single tube K1 by wire after 220V alternating current is converted to 15V unidirectional current, the described commercial element of DC-DC module 6() 15V unidirectional current is converted to 15V and by circuit connection, is connected with light/electric transducer power supply 7 power ends with the input of aforementioned switches driver 8 respectively after 5V unidirectional current, with think that switch driver 8 and light/electric transducer 7 provide power supply, play the voltage buffer action between strong, weak electricity simultaneously.The input of described switch driver 8 is connected with aforementioned DC-DC module 6 outfans by circuit connection, described switch driver 8 control ends are connected with aforementioned light/electric transducer 7 outfans by circuit connection, and described switch driver 8 outfans are connected with IGBT9 grid by circuit connection.In aforementioned light/electric transducer 7, under control signal effect, switch driver 8 output drive signals make aforementioned IGBT9 end open/turn-off.The grid of described IGBT9 is connected with the outfan of aforementioned switches driver 8 by circuit connection, and input is connected with aforementioned power source system 1 mesohigh DC Module 1-2 by wire, and outfan is connected with charging resistor R1 input by wire.Described gate protection circuit 10 inputs are connected with aforementioned IGBT9 grid, and outfan is connected with aforementioned IGBT9 outfan, in order to prevent that grid from occurring that overvoltage damages described IGBT9.Described light/electric transducer 7 inputs are connected with electric to optic converter J1 outfan in signal translating system 4 by optical fiber, and its outfan is connected with described switch driver 8 control end signals by circuit connection, and switch driver 8 outfans are connected with the grid of aforesaid IGBT9 by wire.Therefore, the control signal in electric to optic converter J1 reaches in aforementioned light/electric transducer 7, makes aforesaid switch driver 8 output drive signals make the IGBT9 in aforementioned IGBT single tube K1 open/turn-off.Described charging resistor R1 is noninductive resistance, and resistance is the commercial element of 7 Ω, and power is 30W, in order to limit charging current within the specific limits.Described noninductive charging resistor R1 one end is connected with IGBT9 outfan in aforementioned IGBT single tube K1 by wire, and the other end is connected with discharge resistance R2 sys node with impulse capacitor C1 in pulse shaping module M1 by wire.Described pulse shaping module M1 comprises impulse capacitor C1, discharge resistance R2, IGBT module 12.The described commercial element of impulse capacitor C1() rated operational voltage 4kV, capacitance is the MM7 type capacitor of 10 μ F, its high-pressure side is connected to obtain charge power supply by wire with described charging resistor R1, discharge resistance R2 sys node, described impulse capacitor C1 earth terminal (with power supply be connected) by wire, be connected with IGBT module 12 outfans in described pulse shaping module M1.Described discharge resistance R2 is noninductive resistance, and resistance is the commercial element of 1 Ω, and power is 30W, in order to limit discharge current within the specific limits.Described noninductive discharge resistance R2 one end is connected with impulse capacitor C1 high-pressure side sys node in pulse shaping module M1 with aforementioned charging resistor R1 outfan by wire, and the other end is connected with Helmholtz coil 11 inputs in Helmholtz coil device 3 by wire.Described IGBT module 12 is commercial element, and it is withstand voltage is 3300V, and colelctor electrode maximum is born pulse pulse current 2400A, and ON time is 0.46 μ s, and the turn-off time is 1.75 μ s, and dynamic loss is little; This IGBT module 12 is integrated with supporting driver, and described driver output end is directly connected in IGBT module 12 and can be effectively reduced stray inductance by nut, guarantees the reliable driving to IGBT module 12.Described IGBT module 12 inputs are connected with Helmholtz coil 11 outfans in Helmholtz coil device 3 by wire, its outfan is connected with impulse capacitor C1 earth terminal by wire, described IGBT module 12 driver input ends are connected with Switching Power Supply 1-3 in aforementioned power source system 1 by wire, and described IGBT module 12 driver control ends are connected with electric to optic converter J2 in signal translating system 4 by optical fiber.Like this, the control signal of electric to optic converter J2 output to light/electric transducer in aforementioned IGBT module 12 drivers, makes aforementioned IGBT module 12 driver output drive signals in order to control opening/turn-offing of IGBT module 12 through optical fiber transmission.Because control signal sequential in electric to optic converter J1, electric to optic converter J2 in aforementioned signal translating system 4 is just contrary, so IGBT single tube K1 drives signal work schedule just contrary with IGBT module 12.When synchronous trigger module 5 sends charging signals, through signal translating system 4, reach in the switch driver 8 of aforementioned IGBT single tube K1 and aforementioned pulse shaping module M1 and after driver, be converted to driving signal in IGBT module 12, make aforementioned IGBT single tube K1 open-minded, make IGBT module 12 in aforementioned pulse shaping module M1 turn-off, now aforementioned power source system 1 mesohigh power module 1-2 charges to the impulse capacitor C1 in pulse shaping module M1 in aforementioned pulse current formation system 2 by charging resistor R1 simultaneously.Otherwise, when synchronous trigger module 5 sends discharge signal, through signal translating system 4, reach the switch driver 8 of aforementioned IGBT single tube K1 and aforementioned pulse current and form in system 2 module M1 and after driver, be converted to driving signal in IGBT module 12, aforementioned IGBT single tube K1 is closed logical, make in aforementioned pulse shaping module M1 IGBT module 12 open-minded simultaneously, now the impulse capacitor C1 in aforementioned pulse shaping module M1 produces by discharge resistance R2 the Helmholtz coil 11 that pulse current is flowed through in Helmholtz coil device 3, then at Helmholtz coil 11, produce uniform pulse magnetic field around.
Described Helmholtz coil device 3 comprises Helmholtz coil 11 and 3 lucite pillars 13.Described Helmholtz coil 11 comprises that 2 diameters are 20 or the coil of 10cm, be wire diameter and be the breach coil that the pyrite wire coiling of 0.5cm forms, be that the end of a thread, line tail two ends are used and do not linked together as input, outfan respectively, and after 2 coil planes are fixing through 3 lucite pillars 13, spacing is 20 or 10cm, for meeting the requirement that two coil-spans of Helmholtz's law are coil radius.Described lucite pillar 13 is processed by lucite, its for diameter be 3cm～3.6cm, be highly with the lucite pillar 13 of boss 14 in the middle of 15cm～18cm and cylinder; In the middle for diameter is 4cm～4.6cm, be highly after 14,3 lucite pillars 13 of boss of 7mm～10mm keep flat, in order to fixed platform, to place uniform pulse magnetic-field test to process object; Inwardly opening width apart from lucite pillar 13 middle symmetrical plane 5cm places towards middle symmetrical plane direction, it is the cannelure 15 that 5.1mm～5.2mm, the degree of depth are 5.1mm～5.2mm, about middle symmetrical plane symmetric position, opening same groove 15, in order to Helmholtz coil 11 is embedded and wherein to be fixed.Like this coil in Helmholtz coil 11 is embedded to 3 upper, annular grooves 15 of 3 the 360 ° lucite pillars 13 that are evenly arranged, another coil embeds in 3 lower annular recess 15 of corresponding 3 lucite pillars, Helmholtz coil is limited on 3 the 360 ° lucite pillars 13 that are evenly arranged thus, and the hollow space spacing between two coils is coil radius: 10 or 5cm.Meet the described coil configuration of Helmholtz's law.In addition, can fixing horizontal glass plate on 3 the 360 ° lucite pillar being evenly arranged 13 middle part boss 14 etc., in order to place uniform magnetic field experiment, process object.
Described signal translating system 4, comprises electric to optic converter J1, electric to optic converter J2.Described electric to optic converter J1, electric to optic converter J2 are connected with Switching Power Supply 1-3 by wire, in order to obtain power supply.The outfan of synchronous trigger module 5 passes through optical fiber, through electric to optic converter J1 in described signal translating system 4 and aforesaid pulse current, form light/electric transducer 7 in system 2, the control end that forms the switch driver 8 of IGBT single tube K1 in system 2 with aforesaid pulse current is connected, and controls aforementioned IGBT single tube K1 open/turn-off with this.Simultaneously, the outfan of synchronous trigger module 5 passes through optical fiber, electric to optic converter J2 through described signal translating system 4, arrive aforesaid pulse current and form in system 2 light/the electric transducer of the driver of IGBT module 12 in pulse shaping module M1, be connected with the driver control end of IGBT module 12 again, with this, control the shutoff of aforementioned IGBT module 12/open-minded.Described signal translating system 4 is converted to optical signal by synchronous start pulse signal and transmits with optical fiber, can avoid being subject to the interference that aforesaid pulse current forms system 2 and charge circuit mesohigh, guarantee stability and the synchronicity of synchronous start pulse signal.
Described synchronous trigger module 5 comprises timer chip, outer meeting resistance R3, R4, external capacitor C, phase inverter.Described timer chip is commercial NE555 chip, and in power-supply system 1, the 15V outfan of Switching Power Supply 1-3 is powered to it.The external fixed resistance R3 of described timer chip resistance is 1k Ω, and adjustable resistance R4 resistance is 470k Ω.Described external capacitor is that capacitance is the patch capacitor of 10 μ F.Described phase inverter is commercial element, and model is CD4068.Described timer chip outfan is divided into two and becomes two paths of signals ，Yi road signal and meet electric to optic converter J1 in signal translating system 4, and another road meets electric to optic converter J2 in signal translating system 4 after phase inverter.Therefore in signal translating system 4, in electric to optic converter J1 and electric to optic converter J2, signal is just contrary.Regulating adjustable resistance R4 can change the repetition rate of pulse current in Helmholtz coil and change within the scope of 0.2Hz～46Hz, is also that the repetition rate of final Helmholtz coil generation pulsed magnetic field also changes within the scope of 0.2Hz～46Hz.
Embodiment 2
A uniform pulse magnetic field generator for Helmholtz coil and IGBT module, remainder is with embodiment 1, and in synchronous trigger module 5, adjustable resistance R4 resistance regulates most 50k Ω.
Embodiment 3
A uniform pulse magnetic field generator based on Helmholtz coil and IGBT module, remainder is with embodiment 1, and in synchronous trigger module 5, adjustable resistance R4 resistance regulates most 460k Ω.
These embodiment are interpreted as only for the present invention is described, is not used in and limits the scope of the invention above.After having read the content of record of the present invention, technical staff can make various changes or modifications the present invention, and these equivalences change and modification falls into the scope of the claims in the present invention equally.
Claims (7)
1. the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module, it is characterized in that, comprise that power-supply system (1), pulse current form system (2), Helmholtz coil device (3), signal translating system (4) and synchronous trigger module (5), wherein
Described power-supply system (1), comprises power supply, HVDC module and Switching Power Supply, and described power supply is connected and powers with the input of HVDC module, the input of Switching Power Supply respectively; The alternating current power supply that described HVDC module provides described power supply is boosted and is converted to after direct current, is connected and powers with the input of IGBT single tube K1 in pulse current formation system (2); The alternating current power supply blood pressure lowering that described Switching Power Supply provides described power supply is be connected and power with pulse current formation system (2), signal translating system (4) and the trigger module (5) of synchronizeing respectively after direct current;
Described pulse current forms system (2) and comprises IGBT single tube K1, charging resistor R1, pulse generating module M1; Described IGBT single tube K1, charging resistor R1 and pulse generating module M1 are connected in series;
Described Helmholtz coil device (3) comprises mounting plane, at least three Helmholtz coils (11) that are fixed on the support column (15) on mounting plane and are parallel to described mounting plane, described support column (15) is equidistantly distributed on same circumference, wherein on each support column (15), all has cannelure I (15-1), cannelure II (15-2) and annular boss (14); Described cannelure I (15-1) is less than cannelure II (15-2) to the distance of mounting plane to the distance of mounting plane, and described annular boss (14) is positioned between cannelure I (15-1) and cannelure II (15-2); Described Helmholtz coil (11) comprises coil I and coil II; Described coil I is stuck in cannelure I (15-1), thereby is fixed on support column (15); Described coil II is stuck in cannelure II (15-2), thereby is fixed on support column (15); Described coil I is less than coil II to the distance of mounting plane to the distance of mounting plane; Described Helmholtz coil device (3) forms system (2) with pulse current and is connected;
Described signal translating system (4) comprises electric to optic converter J1(4-1) and electric to optic converter J2(4-2); Described electric to optic converter J1(4-1) control end that outfan and pulse current form the IGBT single tube K1 in system (2) is connected, electric to optic converter J2(4-2) outfan be connected with the control end of pulse shaping module M1 in pulse current formation system (2);
The outfan of described synchronous trigger module (5) is connected with electric to optic converter J1 and the electric to optic converter J2 of signal translating system (4) respectively.
2. the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module according to claim 1, it is characterized in that: described wherein IGBT single tube K1 comprises DC-DC module (6), light/electric transducer (7), switch driver (8), IGBT (9) and gate protection circuit (10), described DC-DC module (6) receives the unidirectional current of Switching Power Supply input in power-supply system (1), the outfan of described DC-DC module (6) is connected with the power end of light/electric transducer (7) with described switch driver (8) respectively, described light/electric transducer (7) outputs a control signal to the control end of switch driver (8), the outfan output drive signal of described switch driver (8) is to the grid of IGBT (9), the input of described light/electric transducer (7) is by optical fiber and electric to optic converter J1(4-1 in signal translating system) be connected, the input of described IGBT (9) receives the electric current of power-supply system (1) mesohigh DC Module input, and the outfan of described IGBT (9) is connected with charging resistor R1, the input of described gate protection circuit (10) is connected with the grid of described IGBT (9), and the outfan of gate protection circuit (10) is connected with the outfan of IGBT (9).
3. the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module according to claim 1, it is characterized in that: described pulse generating module M1 comprises impulse capacitor C1, discharge resistance R2 and IGBT module (12), described impulse capacitor C1 one end ground connection, the other end is connected with Helmholtz coil (11) by discharge resistance R2, the outfan of Helmholtz coil (11) is connected with the input of IGBT module (12), and the outfan of IGBT module (12) is connected with impulse capacitor C1 and ground connection; The driver input end of described IGBT module (12) is connected with Switching Power Supply in described power-supply system (1), and the driver control end of described IGBT module (12) is connected with electric to optic converter J2 in signal translating system (4) by optical fiber.
4. the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module according to claim 3, it is characterized in that: described Helmholtz coil is comprised of two identical coil L1, coil L2 of diameter, and the spacing between described coil L1, coil L2 is coil L1 or coil L2 diameter half.
5. according to the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module described in claim 1 to 4 any one, it is characterized in that: described electric to optic converter J1(4-1), electric to optic converter J2(4-2) in output control signal sequential contrary.
6. the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module according to claim 1, it is characterized in that: the power acquisition 220V alternating current in described power-supply system (1), HVDC module output ceiling voltage amplitude 4000V, maximum current amplitude 60mA.
7. the uniform pulse magnetic field generator based on Helmholtz coil and IGBT module according to claim 1, it is characterized in that: in described power-supply system, (1) Switching Power Supply is converted to 220V alternating current after 15V unidirectional current with the input of the DC-DC module of described IGBT single tube K1 and is connected, and described DC-DC module is converted to 15V and 5V unidirectional current by 15V unidirectional current.
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| CN107068327A (en) * | 2016-11-04 | 2017-08-18 | 葛露露 | A kind of pulsed magnetic generator and its method of work |
| CN108564862A (en) * | 2018-04-19 | 2018-09-21 | 南阳理工学院 | Novel magnetic field drawing apparatus |
| CN109939358A (en) * | 2019-04-16 | 2019-06-28 | 吉林大学 | A kind of low-frequency range broadband magnetic field-therapeutic instrument and its application method for oncotherapy |
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| CN110947099A (en) * | 2019-11-15 | 2020-04-03 | 郑州和济生物科技股份有限公司 | DC low-frequency pulse rotating magnetic field therapeutic equipment |
| CN114035647A (en) * | 2021-11-23 | 2022-02-11 | 哈尔滨工业大学 | Pulse power device for generating disturbance magnetic field |
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