CN109756208A - A kind of concatenated transcranial magnetic stimulation system of more capacitors and its capacitor charging management method - Google Patents
A kind of concatenated transcranial magnetic stimulation system of more capacitors and its capacitor charging management method Download PDFInfo
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- 238000011491 transcranial magnetic stimulation Methods 0.000 title claims abstract description 26
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- 238000004146 energy storage Methods 0.000 claims abstract description 194
- 239000000178 monomer Substances 0.000 claims abstract description 106
- 230000005611 electricity Effects 0.000 claims description 19
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- 238000012544 monitoring process Methods 0.000 claims description 12
- 210000001367 artery Anatomy 0.000 claims description 8
- 210000003462 vein Anatomy 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 2
- 210000001178 neural stem cell Anatomy 0.000 description 7
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- 239000000203 mixture Substances 0.000 description 2
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- 210000004556 brain Anatomy 0.000 description 1
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- 210000005036 nerve Anatomy 0.000 description 1
- 210000003061 neural cell Anatomy 0.000 description 1
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Abstract
The present invention proposes a kind of by the transcranial magnetic stimulation system and its capacitor charging management method of the monomer series-connected energy storage pulsed capacitance constituted of multiple energy storage pulsed capacitances, it is monomer series-connected that transcranial magnetic stimulation system stored energy pulsed capacitance is split as multiple energy storage pulsed capacitances, and respectively to each energy storage pulsed capacitance single battery cell charge, to which energy storage pulsed capacitance is charged to target voltage values with the realization of lower charging voltage, substantially reduce the voltage requirement of transcranial magnetic stimulation system against high voltage charge power supply, while the voltage requirement being resistant to energy storage pulsed capacitance monomer is significantly reduced.
Description
Technical field
The invention belongs to transcranial magnetic stimulation technical fields, in particular to one kind is by multiple monomer series-connected structures of energy storage pulsed capacitance
At energy storage pulsed capacitance transcranial magnetic stimulation system and its capacitor charging management method.
Background technique
Transcranial magnetic stimulation (Transcranial magnetic stimulation, abbreviation TMS) technology is a kind of using arteries and veins
Magnetic fields are rushed in central nervous system, changes the film potential of cortical neural cell, is allowed to generate induced current, influence intracerebral generation
It thanks and neural electrical activity, so as to cause a series of Neural stem cell technology of biochemical reactions.TMS has noninvasive, painless, safe
Feature can be used for stimulating cranial nerve, nerve root and peripheral nerve.Be now widely used in Neuscience, brain science research field and
The diagnosing and treating of clinical disease.
Transcranial magnetic stimulation system generally passes through power supply and stores energy in energy storage pulsed capacitance, then allows energy storage pulse electric
Hold and discharge coil rapid large-current, generates momentary pulse magnetic field, patient is stimulated.Pulse train is taken in clinical application more
Mode repeats to export a certain number of Neural stem cell trains of pulse with certain repetition rate, then that is, under fixed pulse magnetic field strength
Interval a period of time, and this Neural stem cell train of pulse output and batch process are repeated with the fixed cycle, until total Neural stem cell arteries and veins
It rushes number and reaches predetermined amount.As shown in Figure 1, existing transcranial magnetic stimulation system uses a pulse storage capacitor, through cranium
Magnetic stimulation system is to guarantee to export enough pulsed magnetic field intensities, needs energy storage pulsed capacitance being charged to higher voltage, usually
More than 1500V, this requires the one side energy storage pulsed capacitances to need to have higher pressure-resistant index, on the other hand requires institute
Capacitor charging power is stated with the voltage output level for being more than 1500V.Energy storage pulse with high-voltage great-current long-life demand
Capacitor is at high cost, and difficulty is big.And output work of the transcranial magnetic stimulation system during the Neural stem cell train of pulse output of high repetition frequency
Rate usually needs several kilowatts to more than ten kilowatts, and normal power supplies are converted into the high-power electricity of cranium magnetic stimulation system needs
Source, difficulty is big, at high cost.
If can be achieved with energy storage pulsed capacitance being charged to high pressure conditions using the power supply of lower voltage, energy storage arteries and veins will be reduced
The resistance to pressure request of capacitor monomer is rushed, and reduces high-power high voltage DC boosting transform part, is a kind of having for reduction system cost
Effect approach.
The present invention is split as n energy storage pulse based on the above considerations, by transcranial magnetic stimulation system stored energy pulsed capacitance
Capacitor is monomer series-connected, and respectively to each energy storage pulsed capacitance single battery cell charge, thus finally with n energy storage pulsed capacitance list
The form of body series connection output achievees the purpose that high voltage exports, to meet the needs of transcranial magnetic stimulation system application.
Summary of the invention
The purpose of the present invention is to provide a kind of transcranial magnetic stimulation system, energy storage pulsed capacitance is by multiple energy storage pulse electricity
Hold monomer series-connected composition, is charged respectively to each energy storage pulsed capacitance monomer with the capacitor charging power of lower voltage, final energy storage
Pulsed capacitance total voltage reaches target voltage, realizes that Neural stem cell pulse exports demand.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of transcranial magnetic stimulation system is constituted including high voltage charging power supply, by multiple energy storage pulsed capacitances are monomer series-connected
Energy storage pulsed capacitance, high voltage charging power supply put energy storage pulsed capacitance charge switch circuit, energy storage pulsed capacitance to stimulating coil
Electric switch circuit, stimulating coil and monitoring control module, the monitoring control module control high voltage charging power supply is to energy storage pulse
Capacitor charging switching circuit respectively successively charges to the energy storage pulsed capacitance monomer or to all energy storage pulsed capacitance list
Body integrally charges, and reaches target voltage to energy storage pulsed capacitance total voltage, control energy storage pulsed capacitance puts stimulating coil
Electric switch circuit completes energy storage pulsed capacitance and discharges stimulating coil.
The high voltage charging power supply to energy storage pulsed capacitance charge switch circuit include the upper bridge arm switch KA1 of n,
The driving circuit and n lower bridge arm switch KB1, KB2 ... KBn of KA2 ... KAn and the upper bridge arm switch and the lower bridge arm
The driving circuit of switch and n capacitor let out electric switch KC1, KC2 ... KCn and the capacitor lets out driving circuit and the institute of electric switch
State capacitor and let out electric switch concatenated current-limiting resistance R1, R2 ... Rn and main line current-limiting resistance R, the cathode of upper bridge arm switch KA1 with
The anode electrical connection of 1st energy storage pulsed capacitance monomer C1, the cathode of upper bridge arm switch KA2 and the 2nd energy storage pulsed capacitance list
The anode electrical connection of body C2, until the anode of the cathode and n-th of energy storage pulsed capacitance monomer Cn of upper bridge arm switch KAn is electrically connected
It connects, the anode of lower bridge arm switch KB1 is electrically connected with the cathode of the 1st energy storage pulsed capacitance monomer C1, and lower bridge arm switch KB2 is just
Pole is electrically connected with the cathode of the 2nd energy storage pulsed capacitance monomer C2, until anode and n-th of the energy storage arteries and veins of lower bridge arm switch KBn
The cathode electrical connection of capacitor monomer Cn is rushed, the anode of all upper bridge arm switch KA1, KA2 ... KAn is electrically connected and connects
Main line current-limiting resistance R is electrically connected with the anode of high voltage charging power supply, the negative electricity of all lower bridge arm switch KB1, KB2 ... KBn
It links together and is electrically connected with the cathode of high voltage charging power supply；Capacitor lets out the positive series limiting resistor R1 of electric switch KC1 simultaneously
It is electrically connected with the anode of the 1st energy storage pulsed capacitance monomer C1, capacitor lets out the cathode and energy storage pulsed capacitance monomer of electric switch KC1
The cathode of C1 is electrically connected, capacitor let out the positive series limiting resistor R2 of electric switch KC2 and with the 2nd energy storage pulsed capacitance monomer C2
Anode electrical connection, the cathode that capacitor lets out electric switch KC2 is electrically connected with the cathode of energy storage pulsed capacitance monomer C2, until capacitor is let out
The positive series limiting resistor Rn of electric switch KCn is simultaneously electrically connected with the anode of n-th of energy storage pulsed capacitance monomer Cn, and capacitor lets out electricity
The cathode of switch KCn is electrically connected with the cathode of energy storage pulsed capacitance monomer Cn, and each switch state passes through driving circuit control monitored
The control of molding block.
To energy storage pulsed capacitance charging management method in a kind of transcranial magnetic stimulation system, based on the high-voltage charging electricity
Source includes the following steps: energy storage pulsed capacitance charge switch circuit
(1) monitoring control module determines energy storage pulsed capacitance total voltage Uc0 before high voltage charging power supply output voltage Up, charging
With energy storage pulsed capacitance target voltage U；
(2) if Uc0 > U, whole capacitors are closed and let out electric switch KC1, KC2 ... KCn, energy storage pulsed capacitance total voltage Uc by
Uc0 is gradually reduced, until Uc=U, charging complete；
(3) if Uc0=U, charging complete；
(4) if Uc0 < U, and Up > U, then KAn and KB1 closure, other upper bridge arms switches and other lower bridge arms switch are disconnected
It opens, high voltage charging power supply charges to energy storage pulsed capacitance, works as Uc=U, charging complete；
(5) if Uc < U, and Up≤U is then first closed KA1 and KB1, and other upper bridge arms switches and other lower bridge arms switch are disconnected
It opens, high voltage charging power supply charges to first energy storage pulsed capacitance monomer, until energy storage pulsed capacitance total voltage Uc=Uc0+ (U-
Uc0)/n；Then it is closed KA2 and KB2, other upper bridge arm switches and other lower bridge arms switch disconnect, and high voltage charging power supply is to the 2nd
A energy storage pulsed capacitance monomer charging, until energy storage pulsed capacitance total voltage Uc=Uc0+2 (U-Uc0)/n；The rest may be inferred, successively right
Remaining each energy storage pulsed capacitance monomer charging, until energy storage pulsed capacitance total voltage Uc=U, charging complete.
Compared with prior art, the invention has the following advantages that the present invention is completed by the way of substep by energy storage pulse
Capacitor charging requires to substantially reduce to target voltage to the voltage of high voltage charging power supply；The present invention splits energy storage pulsed capacitance
To be significantly reduced by the pressure-resistant index of multiple energy storage pulsed capacitance monomer compositions, each energy storage pulsed capacitance monomer, and make
Charging modes are more flexible, such as can be with the high voltage charging power supply of multiple isolation respectively to the partition capacitance in energy storage pulsed capacitance
Charging, can also use multiple power sources in parallel to increase low pressure charge power supply power, be sequentially completed to each energy storage pulsed capacitance list
Body more charging quickly.
Detailed description of the invention
Fig. 1 is existing transcranial magnetic stimulation system schematic；
Fig. 2 is the transcranial magnetic stimulation system schematic of one embodiment of the invention；
Fig. 3 is the capacitor charging circuit schematic diagram of one embodiment of the present invention；
Fig. 4 is the switching sequence figure of one embodiment of the present invention；
Fig. 5 is energy storage pulsed capacitance voltage curve in the charging process of one embodiment of the present invention.
Specific embodiment
Below with reference to specification embodiment and Figure of description, invention is further explained.
In one embodiment, the present invention proposes a kind of transcranial magnetic stimulation system, including high voltage charging power supply, by multiple storages
Energy storage pulsed capacitance that energy impulse capacitor monomer is constituted, high voltage charging power supply is to energy storage pulsed capacitance charge switch circuit, energy storage
Pulsed capacitance fills stimulating coil discharge switching circuit, stimulating coil and monitoring control module, monitoring control module control high pressure
Power supply successively charges to the energy storage pulsed capacitance monomer or integrally charges to all energy storage pulsed capacitance monomers,
Reach target voltage to energy storage pulsed capacitance total voltage, control energy storage pulsed capacitance is completed to store up to stimulating coil discharge switching circuit
Energy impulse capacitor discharges to stimulating coil.
The monitoring control module is for being monitored control to transcranial magnetic stimulation system modules.For example it obtains and measures
Energy storage pulsed capacitance voltage, to system local temperature measure, each switch state is controlled, is communicated with host computer
Deng specifically, the monitoring control module may include one or more MCU, FPGA and related support circuit.
The transcranial magnetic stimulation system basic principle is as shown in Fig. 2, high voltage charging power supply stores up n by current-limiting resistance R
The energy storage pulsed capacitance charging that energy impulse capacitor monomer is constituted, after the energy storage pulsed capacitance is charged to target voltage, passes through storage
Energy impulse capacitor, to stimulating coil pulsed discharge, realizes Neural stem cell pulse output to stimulating coil discharge switching circuit.The height
Pressure charge power supply includes n upper bridge arm switch KA1, KA2 ... KAn and the upper bridge to energy storage pulsed capacitance charge switch circuit
The driving circuit and n of the driving circuit of arm switch and n lower bridge arm switch KB1, KB2 ... KBn and lower bridge arm switch are a
Capacitor lets out electric switch KC1, KC2 ... KCn and the capacitor lets out the driving circuit of electric switch and the capacitor lets out electric switch series connection
Current-limiting resistance R1, R2 ... Rn and main line current-limiting resistance R, the cathode of upper bridge arm switch KA1 and the 1st energy storage pulsed capacitance list
The anode electrical connection of body C1, the cathode of upper bridge arm switch KA2 are electrically connected with the anode of the 2nd energy storage pulsed capacitance monomer C2, directly
Cathode to upper bridge arm switch KAn is electrically connected with the anode of n-th of energy storage pulsed capacitance monomer Cn, and lower bridge arm switch KB1 is just
Pole is electrically connected with the cathode of the 1st energy storage pulsed capacitance monomer C1, the anode of lower bridge arm switch KB2 and the 2nd energy storage pulse electricity
The cathode electrical connection for holding monomer C2, until the negative electricity of the anode and n-th of energy storage pulsed capacitance monomer Cn of lower bridge arm switch KBn
Connection, the anode of all upper bridge arm switch KA1, KA2 ... KAn is electrically connected and connect main line current-limiting resistance R and high pressure
The anode electrical connection of charge power supply, the cathode of all lower bridge arm switch KB1, KB2 ... KBn are electrically connected and fill with high pressure
The cathode of power supply is electrically connected；Capacitor let out the positive series limiting resistor R1 of electric switch KC1 and with the 1st energy storage pulsed capacitance list
The anode electrical connection of body C1, the cathode that capacitor lets out electric switch KC1 are electrically connected with the cathode of energy storage pulsed capacitance monomer C1, and capacitor is let out
The positive series limiting resistor R2 of electric switch KC2 is simultaneously electrically connected with the anode of the 2nd energy storage pulsed capacitance monomer C2, and capacitor lets out electricity
The cathode of switch KC2 is electrically connected with the cathode of energy storage pulsed capacitance monomer C2, until capacitor lets out the anode series connection limit of electric switch KCn
Leakage resistance Rn is simultaneously electrically connected with the anode of n-th of energy storage pulsed capacitance monomer Cn, and capacitor lets out the cathode and energy storage arteries and veins of electric switch KCn
The cathode electrical connection of capacitor monomer Cn is rushed, each switch state passes through driving circuit control module control monitored.When will be to some
Or when the charging of certain several energy storage pulsed capacitance monomer, chooses corresponding upper bridge arm switch and lower bridge arm closes the switch, the high pressure
Charge power supply runs past main line current-limiting resistance R and selected energy storage pulsed capacitance monomer forms charging circuit, realizes to selected
The energy storage pulsed capacitance monomer charging selected.A kind of pair of energy storage pulsed capacitance charging management method includes the following steps:
(1) monitoring control module determines energy storage pulsed capacitance total voltage Uc0 before high voltage charging power supply output voltage Up, charging
With energy storage pulsed capacitance target voltage U；
(2) if Uc0 > U, whole capacitors are closed and let out electric switch KC1, KC2 ... KCn, energy storage pulsed capacitance total voltage Uc by
Uc0 is gradually reduced, until Uc=U, charging complete；
(3) if Uc0=U, charging complete；
(4) if Uc0 < U, and Up > U, then KAn and KB1 closure, other upper bridge arms switches and other lower bridge arms switch are disconnected
It opens, high voltage charging power supply charges to energy storage pulsed capacitance, works as Uc=U, charging complete；
(5) if Uc < U, and Up≤U is then first closed KA1 and KB1, and other upper bridge arms switches and other lower bridge arms switch are disconnected
It opens, high voltage charging power supply charges to first energy storage pulsed capacitance monomer, until energy storage pulsed capacitance total voltage Uc=Uc0+ (U-
Uc0)/n；Then it is closed KA2 and KB2, other upper bridge arm switches and other lower bridge arms switch disconnect, and high voltage charging power supply is to the 2nd
A energy storage pulsed capacitance monomer charging, until energy storage pulsed capacitance total voltage Uc=Uc0+2 (U-Uc0)/n；The rest may be inferred, successively right
Remaining each energy storage pulsed capacitance monomer charging, until energy storage pulsed capacitance total voltage Uc=U, charging complete.
As shown in figure 3, a kind of embodiment illustrate 4 energy storage pulsed capacitances it is monomer series-connected when capacitor charging principle.
Bridge arm switch has 4, KA1, KA2, KA3, KA4 in correspondence, and lower bridge arm switch has 4, and KB1, KB2, KB3, KB4, capacitor let out electricity
Switch has 4, KC1, KC2, KC3, KC4, and upper bridge arm switch and lower bridge arm switch select IGBT or MOSFET to realize, capacitor lets out electricity
It switchs and high-voltage relay can be selected, let out the concatenated current-limiting resistance R1=R2=R3=R4 of electric switch with capacitor and use 1k Ω resistance value
Resistance, main line current-limiting resistance R use the resistance of 100 Ω resistance values.Each switch state passes through driving circuit control module control monitored
System.When will be to some energy storage pulsed capacitance monomer, for example when energy storage pulsed capacitance monomer C1 charges, chooses corresponding upper bridge arm and open
KA1 and lower bridge arm switch KB1 closure is closed, other upper bridge arm switches and other lower bridge arms switch disconnect, the high voltage charging power supply
Form charging circuit by main line current-limiting resistance R and energy storage pulsed capacitance monomer C1, current direction as indicated by a dashed arrow in the figure,
It realizes and charges to energy storage pulsed capacitance monomer C1.When will be to certain several energy storage pulsed capacitance monomer, such as energy storage pulsed capacitance list
When body C1, energy storage pulsed capacitance monomer C2 charge, corresponding upper bridge arm switch KA2 and lower bridge arm switch KB1 closure is chosen, it is other
Upper bridge arm switch and other lower bridge arms switch disconnect, and the high voltage charging power supply is by main line current-limiting resistance R and energy storage pulse electricity
Hold monomer C1, energy storage pulsed capacitance monomer C2 and form charging circuit, realizes to energy storage pulsed capacitance monomer C1, energy storage pulsed capacitance
Monomer C2 charging, when will to whole energy storage pulsed capacitances, such as energy storage pulsed capacitance monomer C1, energy storage pulsed capacitance monomer C2,
When energy storage pulsed capacitance monomer C3, energy storage pulsed capacitance monomer C4 charge, chooses corresponding upper bridge arm switch KA4 and lower bridge arm is opened
KB1 closure is closed, other upper bridge arm switches and other lower bridge arms switch disconnect, and the high voltage charging power supply is by main line current-limiting resistance
R and energy storage pulsed capacitance monomer C1, energy storage pulsed capacitance monomer C2, energy storage pulsed capacitance monomer C3, energy storage pulsed capacitance monomer
C4 forms charging circuit, realizes to energy storage pulsed capacitance monomer C1, energy storage pulsed capacitance monomer C2, energy storage pulsed capacitance monomer
C3, energy storage pulsed capacitance monomer C4 integrally charge.
Switching sequence figure when energy storage pulsed capacitance as shown in Figure 4 charges, is monomer series-connected with 4 energy storage pulsed capacitances
When capacitor charging situation for, energy storage pulsed capacitance voltage is charged to by the high voltage charging power supply voltage 500V by 0V
1800V.To guarantee that switch state switching is accurate in circuit, in switching, increases switch time delay guard time, generally opens
The delay protection time is closed greater than the switch motion time, for example the upper bridge arm switch and lower bridge arm switch of this example selection are IGBT
Type, 50 μ s of actuation time, then switch time delay guard time can use 100 μ s.At the t0 moment, upper bridge arm switch KA1, lower bridge arm switch
KB1 closure, other upper bridge arm switches and lower bridge arm switch disconnect, then charging circuit charges to energy storage pulsed capacitance monomer C1,
To the t1 moment, energy storage pulsed capacitance monomer C1 has been charged to setting voltage, and upper bridge arm switch KA1, lower bridge arm switch KB1 are disconnected,
Stop charging to energy storage pulsed capacitance monomer C1, after switch time delay guard time, it is ensured that all switches are all off；When t2
It carves, upper bridge arm switch KA2, lower bridge arm switch KB2 closure, other upper bridge arm switches and lower bridge arm switch disconnect, then charge electricity
Road charges to energy storage pulsed capacitance monomer C2, until the t3 moment, energy storage pulsed capacitance monomer C2 has been charged to setting voltage, upper bridge arm
Switch KA2, lower bridge arm switch KB2 are disconnected, and stop charging to energy storage pulsed capacitance monomer C2, by switch time delay guard time
Afterwards, it is ensured that all switches are all off；T4 moment, upper bridge arm switch KA3, lower bridge arm switch KB3 closure, other upper bridge arm switches
It is disconnected with lower bridge arm switch, then charging circuit charges to energy storage pulsed capacitance monomer C3, until t5 moment, energy storage pulsed capacitance list
Body C3 has been charged to setting voltage, and upper bridge arm switch KA3, lower bridge arm switch KB3 are disconnected, and stops to energy storage pulsed capacitance monomer C3
Charging, after switch time delay guard time, it is ensured that all switches are all off；T6 moment, upper bridge arm switch KA4, lower bridge arm
Switch KB4 closure, other upper bridge arm switches and lower bridge arm switch disconnect, then charging circuit fills energy storage pulsed capacitance monomer C4
Electricity, until the t7 moment, energy storage pulsed capacitance monomer C4 has been charged to setting voltage, and energy storage pulsed capacitance total voltage reaches target electricity
Pressure, charging complete.
Energy storage pulsed capacitance total voltage changes when charging when 4 energy storage pulsed capacitances as shown in Figure 5 are monomer series-connected, t0
To the t1 period, the high voltage charging power supply charges to energy storage pulsed capacitance monomer C1, and energy storage pulsed capacitance monomer C1 is filled by 0V
Electricity arrives 450V, t1 to the t2 period, does not charge, energy storage pulsed capacitance total voltage is maintained at 450V；T2 to t3 period, the height
Charge power supply is pressed to charge energy storage pulsed capacitance monomer C2, energy storage pulsed capacitance monomer C2 is charged to 450V, energy storage pulse by 0V
Capacitor total voltage is raised to 900V by 450V, t3 to the t4 period, does not charge, and energy storage pulsed capacitance total voltage is maintained at 900V；t4
To the t5 period, the high voltage charging power supply charges to energy storage pulsed capacitance monomer C3, and energy storage pulsed capacitance monomer C3 is filled by 0V
Electricity arrives 450V, and energy storage pulsed capacitance total voltage is raised to 1350V by 900V, t5 to the t6 period, does not charge, and energy storage pulsed capacitance is total
Voltage is maintained at 1350V；T6 to t7 period, the high voltage charging power supply charge to energy storage pulsed capacitance monomer C4, energy storage arteries and veins
It rushes capacitor monomer C4 and 450V is charged to by 0V, energy storage pulsed capacitance total voltage is raised to 1800V, charging complete by 1350V.
The above is only the preferred embodiments of the disclosure, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, it is contemplated that change or replacement should all cover this
Within the protection scope of invention.
Claims (3)
1. a kind of transcranial magnetic stimulation system, including high voltage charging power supply, energy storage pulsed capacitance, high voltage charging power supply are to energy storage pulse
Capacitor charging switching circuit, energy storage pulsed capacitance are to stimulating coil discharge switching circuit, stimulating coil and monitoring control module, institute
It states monitoring control module monitoring energy storage pulsed capacitance end voltage and controls the high voltage charging power supply to energy storage pulsed capacitance
Charge switch circuit realizes that the high voltage charging power supply is charged to target voltage values to the energy storage pulsed capacitance, then controls institute
Energy storage pulsed capacitance is stated to the stimulating coil discharge switch realization energy storage pulsed capacitance to the stimulating coil pulsed discharge, in fact
An existing transcranial magnetic stimulation, which is characterized in that the energy storage pulsed capacitance is formed by n energy storage pulsed capacitance is monomer series-connected, n >=
2；High voltage charging power supply successively charges to the energy storage pulsed capacitance monomer or to all energy storage pulsed capacitance monomers entirety
It charges, realizes and the energy storage pulsed capacitance is charged to target voltage.
2. the high voltage charging power supply of transcranial magnetic stimulation system as described in claim 1 is to energy storage pulsed capacitance charge switch electricity
Road, which is characterized in that the high voltage charging power supply to energy storage pulsed capacitance charge switch circuit include the upper bridge arm switch KA1 of n,
The driving circuit and n lower bridge arm switch KB1, KB2 ... KBn of KA2 ... KAn and the upper bridge arm switch and the lower bridge arm
The driving circuit of switch and n capacitor let out electric switch KC1, KC2 ... KCn and the capacitor lets out driving circuit and the institute of electric switch
State capacitor and let out electric switch concatenated current-limiting resistance R1, R2 ... Rn and main line current-limiting resistance R, the cathode of upper bridge arm switch KA1 with
The anode electrical connection of 1st energy storage pulsed capacitance monomer C1, the cathode of upper bridge arm switch KA2 and the 2nd energy storage pulsed capacitance list
The anode electrical connection of body C2, until the anode of the cathode and n-th of energy storage pulsed capacitance monomer Cn of upper bridge arm switch KAn is electrically connected
It connects, the anode of lower bridge arm switch KB1 is electrically connected with the cathode of the 1st energy storage pulsed capacitance monomer C1, and lower bridge arm switch KB2 is just
Pole is electrically connected with the cathode of the 2nd energy storage pulsed capacitance monomer C2, until anode and n-th of the energy storage arteries and veins of lower bridge arm switch KBn
The cathode electrical connection of capacitor monomer Cn is rushed, the anode of all upper bridge arm switch KA1, KA2 ... KAn is electrically connected and connects
Main line current-limiting resistance R is electrically connected with the anode of high voltage charging power supply, the negative electricity of all lower bridge arm switch KB1, KB2 ... KBn
It links together and is electrically connected with the cathode of high voltage charging power supply；Capacitor lets out the positive series limiting resistor R1 of electric switch KC1 simultaneously
It is electrically connected with the anode of the 1st energy storage pulsed capacitance monomer C1, capacitor lets out the cathode and energy storage pulsed capacitance monomer of electric switch KC1
The cathode of C1 is electrically connected, capacitor let out the positive series limiting resistor R2 of electric switch KC2 and with the 2nd energy storage pulsed capacitance monomer C2
Anode electrical connection, the cathode that capacitor lets out electric switch KC2 is electrically connected with the cathode of energy storage pulsed capacitance monomer C2, until capacitor is let out
The positive series limiting resistor Rn of electric switch KCn is simultaneously electrically connected with the anode of n-th of energy storage pulsed capacitance monomer Cn, and capacitor lets out electricity
The cathode of switch KCn is electrically connected with the cathode of energy storage pulsed capacitance monomer Cn, and each switch state passes through driving circuit control monitored
The control of molding block.
3. to energy storage pulsed capacitance charging management method in a kind of transcranial magnetic stimulation system, based on as claimed in claim 2
High voltage charging power supply includes the following steps: energy storage pulsed capacitance charge switch circuit
(1) monitoring control module determines energy storage pulsed capacitance total voltage Uc0 and storage before high voltage charging power supply output voltage Up, charging
Energy impulse capacitance object voltage U；
(2) if Uc0 > U, whole capacitors is closed and let out electric switch KC1, KC2 ... KCn, Uc is by Uc0 for energy storage pulsed capacitance total voltage
It is gradually reduced, until Uc=U, charging complete；
(3) if Uc0=U, charging complete；
(4) if Uc0 < U, and Up > U, then KAn and KB1 closure, other upper bridge arms switches and other lower bridge arms switch are disconnected, high
Charge power supply is pressed to charge energy storage pulsed capacitance, until Uc=U, charging complete；
(5) if Uc < U, and Up≤U is then first closed KA1 and KB1, and other upper bridge arms switches and other lower bridge arms switch disconnect, high
Pressure charge power supply charges to first energy storage pulsed capacitance monomer, until energy storage pulsed capacitance total voltage Uc=Uc0+ (U-Uc0)/n；
Then it is closed KA2 and KB2, other upper bridge arm switches and other lower bridge arms switch disconnect, and high voltage charging power supply is to the 2nd energy storage arteries and veins
The charging of capacitor monomer is rushed, until energy storage pulsed capacitance total voltage Uc=Uc0+2 (U-Uc0)/n；The rest may be inferred, successively to remaining each storage
Energy impulse capacitor monomer charging, until energy storage pulsed capacitance total voltage Uc=U, charging complete.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510014A (en) * | 2020-04-01 | 2020-08-07 | 南京航空航天大学 | High-voltage pulse generating circuit |
| CN115282488A (en) * | 2022-06-21 | 2022-11-04 | 中国科学院自动化研究所 | Magnetic stimulation instrument |
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2018
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510014A (en) * | 2020-04-01 | 2020-08-07 | 南京航空航天大学 | High-voltage pulse generating circuit |
| CN111510014B (en) * | 2020-04-01 | 2021-07-20 | 南京航空航天大学 | High-voltage pulse generating circuit |
| CN115282488A (en) * | 2022-06-21 | 2022-11-04 | 中国科学院自动化研究所 | Magnetic stimulation instrument |
| CN115282488B (en) * | 2022-06-21 | 2023-09-12 | 中国科学院自动化研究所 | Magnetic stimulation instrument |
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