CN103520836A - Uniform pulsed magnetic field generator on basis of Helmholtz coil and IGBT (Insulated Gate Bipolar Transistor) module - Google Patents

Abstract

The invention provides a uniform pulsed magnetic field generator based on a Helmholtz coil and an IGBT module, which includes a power supply system, a pulse current forming system, a Helmholtz coil device, a signal conversion system and a synchronous trigger module, and the power supply system The switching power supply reduces the voltage of the AC power supply to DC and then respectively connects and supplies power to the pulse current forming system, the signal conversion system and the synchronous trigger module; the Helmholtz coil device is connected to the pulse current forming system; the signal conversion system The output end of the electric/optical converter J2 is connected with the control end of the pulse forming module M1 in the pulse current forming system; the output end of the synchronous trigger module is respectively connected with the electric/optical converter J1 and the electric/optical conversion The device J2 is connected; the present invention has high integration, longer service life, higher operating frequency, greatly reduces the circuit volume, and reduces the loss of the entire circuit.

Description

Uniform Pulse Magnetic Field Generator Based on Helmholtz Coil and IGBT Module

technical field

The invention belongs to the field of biological electromagnetic technology, and in particular relates to a uniform pulsed magnetic field generator based on a Helmholtz coil and an IGBT module.

Background technique

At present, the impact of pulsed magnetic fields on cell structure and function and the therapeutic effect on organisms have gradually become a research hotspot in the field of bio-electromagnetic technology. A large number of experimental results show that from the perspective of biomedical effects, the magnetic field can reduce the nutrient supply of tumors by inhibiting the formation of microvessels and blocking new blood vessels, and make the mitochondria and rough endoplasmic reticulum in tumor cells edema and affect the metabolism of tumor cells Function, reduce tumor cell nucleoplasm ratio to reduce its malignancy and heteromorphic growth rate, regulate p53, Bcl-2 family, Cytochrome C and other genes and activate DNA endonuclease to induce tumor cell apoptosis, and improve immune cell oncolysis The ability to phagocytize and phagocytose apoptotic bodies improves immune function, hinders DNA replication and inhibits tumor cell mitosis, thereby achieving the effect of killing tumor cells and inhibiting the increase in tumor volume. From the perspective of bioelectric effect, the action of magnetic field causes the change of intracellular magnetic flux and induces current on the cell membrane, and the electromotive force generated between the induced current and the external strong pulsed magnetic field destroys the cell membrane; the charged particles in the cell are stimulated by the magnetic field. Under the influence of Lorentz force, its trajectory is often restricted within the Larmore radius, resulting in the abnormal transmission of electrons and ions in the cell, thus affecting the transmembrane potential of the cell membrane and the concentration of free calcium ions in the cell, thereby affecting the cell's normal physiological function.

Contents of the invention

One of the objects of the present invention is to provide a uniform pulsed magnetic field generator based on Helmholtz coils and IGBT modules. After the Helmholtz coil is installed, a uniform pulsed magnetic field will be generated in the hollow volume between the two coils of the Helmholtz coil. Therefore, the tumor tissue can be placed in the hollow volume of the previous complaint, and the treatment effect of the pulsed magnetic field on the tumor tissue under various parameter combinations can be observed, and the amplitude, steepness, and action time of the pulsed magnetic field required to treat different tumor tissues can be obtained. The corresponding parameters are used to accumulate experimental parameters for subsequent pulsed magnetic field treatment of tumor tissue and to conduct relevant beneficial explorations.

The technical scheme adopted for realizing the purpose of the present invention is such:

A uniform pulsed magnetic field generator based on a Helmholtz coil and an IGBT module, including a power supply system, a pulse current forming system, a Helmholtz coil device, a signal conversion system and a synchronous trigger module, wherein

The power supply system includes a power supply, a high-voltage direct current module and a switching power supply, and the power supply is respectively connected to the input end of the high-voltage direct current module and the input end of the switching power supply and supplies power; the high-voltage direct current module upgrades the AC power provided by the power supply to After voltage and conversion to DC, it is connected to the input terminal of IGBT single tube K1 in the pulse current forming system for power supply; the switching power supply reduces the voltage of the AC power provided by the power supply to DC, and then respectively forms the system and signal conversion with the pulse current The system and sync trigger modules are connected and powered.

The pulse current forming system includes an IGBT single tube K1, a charging resistor R1, and a pulse generating module M1; the IGBT single tube K1, the charging resistor R1, and the pulse generating module M1 are connected in series.

The Helmholtz coil device includes an installation plane, at least three support columns fixed on the installation plane and a Helmholtz coil parallel to the installation plane, and the support columns are equidistantly distributed on the same circumference , wherein each support column has an annular groove I, an annular groove II and an annular boss; the distance from the annular groove I to the installation plane is smaller than the distance from the annular groove II to the installation plane, and the annular boss is located in the annular groove I and the annular groove II; the Helmholtz coil includes coil I and coil II; the coil I is clamped in the annular groove I, thereby being fixed on the support column; the coil II is clamped in the annular groove II, Therefore, it is fixed on the support column; the distance from the coil I to the installation plane is smaller than the distance from the coil II to the installation plane; the Helmholtz coil device is connected with the pulse current forming system.

The signal conversion system includes an electric/optical converter J1 and an electric/optical converter J2; the output end of the electric/optical converter J1 is connected to the control end of the IGBT single tube K1 in the pulse current forming system, and the electric/optical The output terminal of the converter J2 is connected to the control terminal of the pulse forming module M1 in the pulse current forming system, and the timings of the output control signals of the electrical/optical converter J1 and the electrical/optical converter J2 are just opposite.

The output terminals of the synchronous trigger module are respectively connected with the electrical/optical converter J1 and the electrical/optical converter J2 of the signal conversion system.

Further, the IGBT single tube K1 includes a DC-DC module, an optical/electrical converter, a switch driver, an IGBT and a gate protection circuit, and the DC-DC module receives the direct current input by the switching power supply in the power supply system, and the The output terminals of the DC-DC module are respectively connected to the power supply terminals of the switch driver and the optical/electrical converter, the optical/electrical converter outputs control signals to the control terminal of the switch driver, and the output terminal of the switch driver outputs drive signals To the gate of the IGBT, the input end of the optical/electrical converter is connected to the electrical/optical converter J1 in the signal conversion system through an optical fiber; the input end of the IGBT receives the input current of the high voltage DC module in the power supply system, so The output end of the IGBT is connected to the charging resistor R1; the input end of the gate protection circuit is connected to the gate of the IGBT, and the output end of the gate protection circuit is connected to the output end of the IGBT.

Further, the pulse generation module M1 includes a pulse capacitor C1, a discharge resistor R2 and an IGBT module. One end of the pulse capacitor C1 is grounded, and the other end of the pulse capacitor C1 is connected to the Helmholtz coil through the discharge resistor R2, and is energized to the Helmholtz coil. The input end of the coil generates a uniform magnetic field, the output end of the Helmholtz coil is connected to the input end of the IGBT module, the output end of the IGBT module is connected to the pulse capacitor C1 and grounded; the driver input end of the IGBT module is connected to the power system The switching power supply is connected, and the driver control end of the IGBT module is connected to the electrical/optical converter J2 in the signal conversion system through an optical fiber.

Further, the Helmholtz coil is composed of two coils L1 and L2 with the same diameter, and the distance between the coils L1 and L2 is half of the diameter of the coil L1 or the coil L2.

Further, the power supply in the power supply system adopts 220V AC, and the high-voltage DC module outputs a maximum voltage amplitude of 4000V and a maximum current amplitude of 60mA.

Further, the switching power supply in the power system converts 220V AC power into 15V DC power and connects it to the input terminal of the DC-DC module of the IGBT single tube K1, and the DC-DC module converts 15V DC power into 15V and 5V DC power .

Further, the three supporting columns of the Helmholtz coil device are sequentially provided with a lower annular groove, a boss and an upper annular groove from bottom to top, and the lower annular groove and the upper annular groove are installed with Helmholtz coils .

After the present invention adopts the above technical scheme, it mainly has the following beneficial effects:

1. The present invention adopts the IGBT module, which has high integration, longer service life, higher operating frequency, greatly reduces the circuit volume, and reduces the loss of the entire circuit. The structure is compact, the layout is reasonable, the stray inductance of the discharge circuit is reduced, and the non-inductive resistance load is used to improve the output pulse steepness.

2. The present invention uses optical fiber as a signal transmission channel to realize electrical isolation between strong and weak signals. Compared with the commonly used method of using optical coupling devices, the isolation voltage of optical fiber is higher and the response speed is faster. The high anti-interference performance of optical fiber greatly avoids the electromagnetic interference of the surrounding environment during the transmission of optical signals.

3. The pulse current generator designed by the present invention adopts the IGBT module, which can output: the output pulse current amplitude is 1500A. Pulse width 14μs, pulse rise time 4μs. It can be used in applications requiring high steepness and large value pulse current.

4, the present invention has designed a kind of Helmholtz coil device, and it comprises 2 coils that diameter is 20 or 10cm, is the gap coil that the brass wire of 0.5cm wire diameter is wound and forms, i.e. wire end, wire The two ends of the tail are used as input and output ends and are not connected together. After the two coil planes are fixed by three plexiglass pillars, the distance between the two coils is 10 or 5cm. After the pulse current output by the above pulse current generator is passed into the Helmholtz coil in the Helmholtz coil device, the rise time of the pulse magnetic field obtained in the 99% uniform area in the hollow volume between the two coils is 4 μs, and the pulse width It is a uniform pulsed magnetic field with a pulsed magnetic field amplitude of 20Gs (Gauss) for 14μs.

5. The device adopts standardized and modular design with simple structure and convenient disassembly and assembly. The whole machine is small in size, highly integrated, easy to operate, and has very low requirements for the experimental site.

6. The output pulse frequency of the IGBT module circuit involved in the device is adjustable within the range of 0.2Hz to 46Hz, so that the frequency of the pulsed magnetic field generated by the Helmholtz coil is adjustable within the range of 0.2Hz to 46Hz. This can effectively meet the requirements of the experiment on the frequency of the pulsed magnetic field, and is conducive to finding the best frequency parameters for treating tumor tissues.

Description of drawings

The device of the invention can be further illustrated by the non-limiting examples given in the accompanying drawings.

Fig. 1 is a functional block diagram of the present invention.

FIG. 2 is a schematic structural diagram of the IGBT single transistor K1 in the pulse current forming system of Embodiment 1. FIG.

FIG. 3 is a schematic structural diagram of the pulse generating module M1 in the pulse current forming system of Embodiment 1. FIG.

FIG. 4 is a composition diagram of various parts of the Helmholtz coil device of Embodiment 1. FIG.

In the figure, 1 power supply system, 2 pulse current forming system, 3 Helmholtz coil device, 4 signal conversion system, 5 synchronous trigger module, 6DC-DC module, 7 optical/electrical converter, 8 switch driver, 9IGBT, 10 Gate protection circuit, 11 Helmholtz coil, 12 IGBT module, 13 supporting column, 14 boss, 15-1 annular groove I, 15-2 annular groove II.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above-mentioned technical idea of the present invention, various replacements and changes made according to common technical knowledge and customary means in this field shall be included in the scope of the present invention.

As shown in Figures 1 to 4, a uniform pulsed magnetic field generator based on Helmholtz coils and IGBT modules mainly includes a power supply system 1, a pulse current forming system 2, a Helmholtz coil device 3, and a signal conversion system 4 , Synchronous trigger module 5.

The power supply system 1 includes a power supply 1-1, a high-voltage DC module 1-2, and a switching power supply 1-3. The claimed power supply 1-1 is 220V mains power, which is connected to the input terminals of the high-voltage DC module 1-2 and the switching power supply 1-3 through wires to provide AC power for the high-voltage DC module 1-2 and the switching power supply 1-3. The high-voltage direct current module 1-2 of the complaint is a commercially available module that outputs direct current with a maximum voltage amplitude of 4000V and a maximum current amplitude of 60mA. The output terminals of the high-voltage direct current module 1-2 of the complaint form the IGBT in the system 2 through wires and pulse currents. The input end of the single tube K1 is connected to provide charging power for the aforementioned pulse current forming system 2 . The input end of the switching power supply 1-3 (commercially available components) is connected to the power supply 1-1 through wires, and the switching power supply 1-3 converts 220V alternating current into 15V direct current, and then connects the pulse current through the wires. The formation system 2, the signal conversion system 4 and the synchronous trigger module 5 are connected to provide DC power for the above-mentioned parts.

The pulse current forming system includes an IGBT single tube K1, a charging resistor R1 and a pulse forming module M1. The IGBT single tube K1 includes a DC-DC module 6, an optical/electrical converter 7, a switch driver 8, an IGBT 9 and a gate protection circuit 10, and the first four are integrated on the same PCB. The switching power supply 1-3 in the aforementioned power supply system 1 converts 220V AC power into 15V DC power and connects it to the input end of the DC-DC module 6 of the IGBT single tube K1 through wires. The DC-DC module 6 (commercially available components ) after converting the 15V direct current into 15V and 5V direct current, connect them to the input terminal of the aforementioned switch driver 8 and the power supply terminal of the optical/electrical converter power supply 7 through circuit wiring, so as to provide power for the switch driver 8 and the optical/electrical converter 7, and at the same time Play the role of voltage isolation between strong and weak electricity. The input terminal of the switch driver 8 is connected to the output terminal of the aforementioned DC-DC module 6 through circuit wiring, the control terminal of the switch driver 8 is connected to the output terminal of the aforementioned optical/electrical converter 7 through circuit wiring, and the output terminal of the switch driver 8 is The terminal is connected to the gate of IGBT9 through circuit wiring. Under the action of the control signal in the aforementioned optical/electrical converter 7 , the switch driver 8 outputs a driving signal to turn on/off the aforementioned IGBT 9 . The gate of the IGBT9 is connected to the output end of the switch driver 8 through circuit wiring, the input end is connected to the high-voltage DC module 1-2 in the aforementioned power supply system 1 through a wire, and the output end is connected to the input end of the charging resistor R1 through a wire. . The input end of the gate protection circuit 10 is connected to the gate of the aforementioned IGBT9, and the output end is connected to the output end of the aforementioned IGBT9, so as to prevent the overvoltage on the gate from damaging the IGBT9. The input end of the optical/electrical converter 7 is connected to the output end of the electrical/optical converter J1 in the signal conversion system 4 through an optical fiber, and its output end is connected to the control terminal signal of the switch driver 8 through circuit wiring, and the switch driver 8. The output terminal is connected to the gate of the aforementioned IGBT 9 through wires. Therefore, the control signal in the electrical/optical converter J1 is transmitted to the aforementioned optical/electrical converter 7, so that the aforementioned switch driver 8 outputs a driving signal to turn on/off the IGBT9 in the aforementioned IGBT single transistor K1. The charging resistor R1 is a non-inductive resistor, a commercially available component with a resistance of 7Ω and a power of 30W, which is used to limit the charging current within a certain range. One end of the non-inductive charging resistor R1 is connected to the output terminal of the IGBT9 in the aforementioned IGBT single tube K1 through a wire, and the other end is connected to the parallel node of the pulse capacitor C1 and the discharge resistor R2 in the pulse forming module M1 through a wire. The pulse forming module M1 includes a pulse capacitor C1 , a discharge resistor R2 , and an IGBT module 12 . The pulse capacitor C1 (commercially available components) is an MM7 type capacitor with a rated working voltage of 4kV and a capacitance value of 10μF. Its high-voltage end is connected to the charging resistor R1 and the discharging resistor R2 through a wire in parallel to obtain a charging power supply. The ground terminal of the pulse capacitor C1 (connected to the power supply ground) is connected to the output terminal of the IGBT module 12 in the pulse forming module M1 through a wire. The discharge resistor R2 is a non-inductive resistor, a commercially available component with a resistance of 1Ω and a power of 30W, which is used to limit the discharge current within a certain range. One end of the non-inductive discharge resistor R2 is connected to the output terminal of the aforementioned charging resistor R1 and the high-voltage end of the pulse capacitor C1 in the pulse forming module M1 in parallel through a wire, and the other end is connected to the Helmholtz coil device 3 in the Helmholtz coil device 3 through a wire. Coil 11 input terminal connection. The IGBT module 12 is a commercially available component with a withstand voltage of 3300V, a maximum pulse pulse current of 2400A for the collector, a turn-on time of 0.46 μs, a turn-off time of 1.75 μs, and low dynamic loss; the IGBT module 12 integrates As for the supporting driver, the output end of the driver is directly connected to the IGBT module 12 through a nut, which can effectively reduce stray inductance and ensure reliable driving of the IGBT module 12 . The input end of the IGBT module 12 is connected to the output end of the Helmholtz coil 11 in the Helmholtz coil device 3 through a wire, and the output end is connected to the ground end of the pulse capacitor C1 through a wire. The IGBT module 12 driver input The terminal is connected to the switching power supply 1-3 in the aforementioned power supply system 1 through wires, and the driver control terminal of the IGBT module 12 is connected to the electrical/optical converter J2 in the signal conversion system 4 through an optical fiber. In this way, the control signal output by the electrical/optical converter J2 is transmitted to the optical/electrical converter in the driver of the IGBT module 12 through the optical fiber, so that the driver of the aforementioned IGBT module 12 outputs a driving signal to control the on/off of the IGBT module 12 . Since the control signal timings of the electrical/optical converter J1 and the electrical/optical converter J2 in the aforementioned signal conversion system 4 are just opposite, the working timings of the driving signals of the IGBT single transistor K1 and the IGBT module 12 are just opposite. When the synchronous triggering module 5 sends a charging signal to the switch driver 8 of the aforementioned IGBT single tube K1 and the driver in the IGBT module 12 of the aforementioned pulse forming module M1 through the signal conversion system 4, it is converted into a driving signal, so that the aforementioned IGBT single tube K1 is turned on, At the same time, the IGBT module 12 in the pulse forming module M1 is turned off. At this time, the high voltage power supply module 1-2 in the power supply system 1 charges the pulse capacitor C1 in the pulse forming module M1 in the pulse current forming system 2 through the charging resistor R1. On the contrary, when the synchronous trigger module 5 sends out the discharge signal, it is transmitted to the switch driver 8 of the aforementioned IGBT single tube K1 and the driver in the IGBT module 12 of the aforementioned pulse current forming system 2 module M1 through the signal conversion system 4, and then converted into a driving signal, so that the aforementioned IGBT The single tube K1 is turned off, and at the same time, the IGBT module 12 in the aforementioned pulse forming module M1 is turned on. At this time, the pulse capacitor C1 in the aforementioned pulse forming module M1 generates a pulse current through the discharge resistor R2 and flows through the Helmholtz coil device 3. The Helmholtz coil 11 in turn generates a uniform pulsed magnetic field around the Helmholtz coil 11 .

The Helmholtz coil device 3 includes a Helmholtz coil 11 and three plexiglass columns 13 . Described Helmholtz coil 11 comprises 2 diameters and is the coil of 20 or 10cm, is the notch coil that the brass wire of 0.5cm wire diameter is wound and forms, and promptly wire head, wire tail two ends are respectively used as input, The output ends are not connected together, and the distance between the two coil planes is 20 or 10 cm after being fixed by three plexiglass pillars 13, which is used to meet the requirement that the distance between the two coils is the coil radius in Helmholtz's law. The plexiglass pillar 13 is processed from plexiglass, and it is a plexiglass pillar 13 with a diameter of 3cm to 3.6cm, a height of 15cm to 18cm and a boss 14 in the middle of the cylinder; 4.6cm, a boss 14 with a height of 7mm to 10mm, and three plexiglass pillars 13 are laid flat and used to fix the platform to place the experimental treatment object of uniform pulsed magnetic field; it is symmetrical toward the middle at a distance of 5cm from the middle symmetry plane of the plexiglass pillar 13 The annular groove 15 with a width of 5.1 mm to 5.2 mm and a depth of 5.1 mm to 5.2 mm is opened inwardly in the plane direction, and the same groove 15 is opened at a symmetrical position about the middle symmetrical plane to embed the Helmholtz coil 11 therein. fixed. In this way, one coil in the Helmholtz coil 11 is embedded in the three upper annular grooves 15 of three plexiglass pillars 13 evenly arranged at 360°, and the other coil is embedded in the three lower annular grooves 15 of the corresponding three organic glass pillars. , thus the Helmholtz coil is confined on three plexiglass pillars 13 uniformly arranged at 360°, and the space between the two coils is the coil radius: 10 or 5 cm. A coil configuration described by Helmholtz's law. In addition, three plexiglass pillars 13 evenly arranged in 360° can be fixed on the boss 14 in the middle, and horizontal glass plates can be fixed to place the objects to be treated in the uniform magnetic field experiment.

The signal conversion system 4 includes an electrical/optical converter J1 and an electrical/optical converter J2. The electrical/optical converter J1 and the electrical/optical converter J2 are connected to the switching power supply 1-3 through wires to obtain power. The output end of the synchronous trigger module 5 passes through an optical fiber, passes through the electrical/optical converter J1 in the signal conversion system 4 and the optical/electrical converter 7 in the aforementioned pulse current forming system 2, and the IGBT in the aforementioned pulse current forming system 2 The control terminal of the switch driver 8 of the single tube K1 is connected to control the opening/closing of the aforementioned IGBT single tube K1. At the same time, the output end of the synchronous trigger module 5 passes through the optical fiber, passes through the electric/optical converter J2 of the signal conversion system 4, and reaches the light/electricity of the driver of the IGBT module 12 in the pulse forming module M1 in the aforementioned pulse current forming system 2. The converter is further connected to the driver control terminal of the IGBT module 12 to control the turn-off/turn-on of the aforementioned IGBT module 12 . The signal conversion system 4 converts the synchronous trigger pulse signal into an optical signal and transmits it with an optical fiber, which can avoid interference from the aforementioned pulse current forming system 2 and the high voltage in the charging circuit, and ensures the stability and synchronization of the synchronous trigger pulse signal .

The synchronous trigger module 5 includes a timer chip, external resistors R3, R4, external capacitor C, and an inverter. The timer chip is a commercially available NE555 chip, which is powered by the 15V output terminals of the switching power supply 1-3 in the power supply system 1 . The fixed resistor R3 externally connected to the timer chip has a resistance value of 1 kΩ, and the adjustable resistor R4 has a resistance value of 470 kΩ. The external capacitor is a patch capacitor with a capacitance of 10 μF. The inverter is a commercially available component, model CD4068. The output terminal of the timer chip is divided into two to become two signals, one signal is connected to the electrical/optical converter J1 in the signal conversion system 4, and the other is connected to the electrical/optical converter in the signal conversion system 4 after passing through the inverter J2. Therefore, the signals in the electrical/optical converter J1 and the electrical/optical converter J2 in the signal conversion system 4 are just opposite. Adjusting the adjustable resistor R4 can change the repetition frequency of the pulse current in the Helmholtz coil in the range of 0.2Hz to 46Hz, that is, the repetition frequency of the pulsed magnetic field generated by the Helmholtz coil is also in the range of 0.2Hz to 46Hz Variety.

Example 2

A uniform pulsed magnetic field generator based on a Helmholtz coil and an IGBT module, the rest of which is the same as in Embodiment 1, and the resistance of the adjustable resistor R4 in the synchronous trigger module 5 is adjusted to 50kΩ.

Example 3

A uniform pulsed magnetic field generator based on a Helmholtz coil and an IGBT module, the rest of which is the same as in Embodiment 1, and the resistance of the adjustable resistor R4 in the synchronous trigger module 5 is adjusted to 460kΩ.

The above embodiments should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, skilled persons can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

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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