CN115235301B - Ignition device and ignition method for low-power hollow cathode microplasma - Google Patents
Ignition device and ignition method for low-power hollow cathode microplasma Download PDFInfo
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- 239000002360 explosive Substances 0.000 claims description 18
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- 239000002245 particle Substances 0.000 claims description 17
- 239000003814 drug Substances 0.000 claims description 15
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims description 9
- 150000002500 ions Chemical class 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000003832 thermite Substances 0.000 claims description 6
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- 125000004430 oxygen atom Chemical group O* 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
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- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
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- 239000003989 dielectric material Substances 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 239000004323 potassium nitrate Substances 0.000 claims description 2
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0811—Primers; Detonators characterised by the generation of a plasma for initiating the charge to be ignited
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention discloses an ignition method and an ignition device for low-power hollow cathode microplasma. The device consists of a miniature high-voltage conversion unit and a miniature plasma generation unit, wherein the miniature high-voltage conversion unit realizes that low-voltage direct current input is converted into high-voltage direct current, alternating current or pulse output; the micro plasma generating unit adopts a sandwich structure consisting of an upper electrode, a lower electrode and an insulating medium in the middle, and one or more holes penetrating the electrodes and the insulating medium are arranged on the sandwich structure to serve as a plasma generating area. The device converts a low-voltage direct-current starting signal into high-voltage output by utilizing a miniature high-voltage conversion unit, and the high-voltage drives a plasma generation unit to generate air unbalanced plasma so as to ignite energetic grains embedded into micropores or an energetic film adhered above the micropores to realize ignition. The device has the characteristics of high safety and reliability, low ignition power and capability of being ignited for multiple times.
Description
Technical Field
The invention belongs to the field of initiating explosive device ignition, and particularly relates to an ignition device and an ignition method for low-power hollow cathode microplasma.
Background
The initiating explosive device is a general term for components, devices and systems which are used for igniting the initiating explosive, detonating the explosive, doing mechanical work or generating special effects by igniting or exploding the initiating explosive agent with smaller energy after receiving the control information. As an initial ignition source, the ignition device is a bridge for realizing connection command and target, and whether the reliable action of the ignition device directly relates to whether an initiating explosive device and a subsequent system can be ignited or detonated normally.
The gas discharge plasma provides a new way for ignition. The gas discharge generates plasma by applying a high voltage to the gas to generate a breakdown discharge of the gas. Under the action of strong electric field, electron drift motion is obviously stronger than other particles, so that electron temperature is very high, for example, electron energy can reach more than 1eV (1 eV corresponds to 11600K), and a large amount of active nitrogen-oxygen particles (such as N atoms, O atoms, OH molecules, NO molecules and the like) exist to serve as combustion improver, so that the method has unique advantages in ignition.
At present, the existing ignition device in China still takes sensitive bridge wires as the main materials, has low structural strength, poor heat dissipation performance, weak electromagnetic energy resistance, low safety current and large integration difficulty with a digital logic circuit, and severely limits the further development of micro intelligent weapons and aerospace technology in China. Some of the novel ignition devices such as semiconductor bridges, explosion foils, etc. have not been widely used, wherein the semiconductor bridge fires mainly through a thermally ionized polysilicon bridge, while the explosion foil generates plasma through the thermally ionized bridge foil, and the impact flyer fires. The ignition device described above generates plasma based on thermal ionization instead of gas discharge, and thus differs significantly from the present invention.
The plasma high-energy electrons and the high-activity nitrogen-oxygen particle density are regulated and controlled, so that the plasma high-energy electrons and the high-activity nitrogen-oxygen particle density are applicable to ignition requirements of energetic medicaments with different sensitivity. At present, the domestic initiating explosive devices still take the second-generation sensitive bridge initiating explosive devices as the main materials, so that the safety is poor; the conventional third-generation semiconductor bridge initiating explosive device can meet the class A insensitive requirement of 1A1W5min for no ignition; the explosive foil initiating explosive device can meet the B-class insensitive requirement of 500V non-ignition. Therefore, the ignition device can only be applied to a specific range, and based on the gas discharge microplasma ignition technology, the high-efficiency regulation and control of characteristic parameters such as plasma electron density, electron temperature, active particle density and the like can be realized by changing the output voltage and the discharge structure, so that the reliable ignition of a specific insensitive energetic medicament is realized.
In the existing plasma ignition technology, the plasma ignition method and the plasma generating apparatus as described in patent CN13796163a are actually a method and an apparatus for generating plasma, while the working gas thereof is not air. Patent CN214675822U provides a microwave plasma ignition device, but it adopts microwave plasma, which has obvious differences from the present invention, and in addition, the working gas and the specific application direction are not clear, and it does not belong to the field of initiating explosive device ignition described in the present invention. Patent CN214674348U provides a plasma ignition power supply system, but it is also a method of generating plasma and needs to rely on strong magnetic field control, which is also significantly different from the present invention. In summary, the plasma ignition technique described above is primarily directed to a method of generating a plasma, rather than utilizing a plasma to ignite or detonate an energetic agent. Patent CN110475309a describes a programmable plasma spot piston, mainly for ignition sources of internal combustion engines, but with operating voltages of several tens of kv, and working gases being mixtures of air and fuel (e.g. petrol), i.e. by direct conversion of energetic molecules into plasma, which is also a significant departure from the present invention.
Disclosure of Invention
Aiming at the limitation of the prior ignition technology, the invention aims to design a novel ignition device to realize reliable ignition of conventional primary explosive and sensitive explosive, and the ignition device has the advantages of adjustable ignition performance, simple structure, low input power and the like.
In order to achieve the above purpose, an ignition device and an ignition method for low-power hollow cathode microplasma are provided. Comprises a miniature high-voltage conversion unit and a microplasma generation unit. Wherein the input end of the microplasma generating unit is connected with the output end of the miniature high-voltage converting unit.
Aiming at the ignition device based on the hollow cathode plasma discharge, the core ignition mechanism is as follows:
The micro high-voltage conversion unit is used for generating non-equilibrium plasma by applying transient high voltage to air to discharge gas, the energetic medicament is bombarded by high-energy electrons generated in the plasma to transfer energy, and meanwhile, the active nitrogen-oxygen particles in the plasma are used for providing high-activity oxidant for the energetic medicament, so that the energetic medicament is ignited by the synergistic effect of key components in the plasma.
Further, the miniature high-voltage conversion unit comprises a rectifying circuit and a boosting circuit, the whole appearance of the miniature high-voltage conversion unit can be a cylinder or a cuboid, the diameter of the cylinder is more than or equal to 3cm, and the height of the cylinder is more than or equal to 10cm; the length and width of the cuboid are more than or equal to 3cm, and the height is more than or equal to 10cm.
Further, the driving voltage of the miniature high-voltage conversion unit is in a direct-current form, and the amplitude of the input voltage is 1.5V-12V.
Further, the output voltage of the micro high voltage conversion unit can be in the form of direct current, alternating current, pulse and the like.
Further, the amplitude of the direct current voltage is 1kV-30kV; the peak-to-peak value of the alternating voltage is 1kV-30kV, and the frequency is 50Hz-300MHz; the pulse voltage amplitude is 1kV-30kV, and the rising edge is as follows: more than or equal to 100 mu s, and the frequency is 50Hz-300MHz.
The miniature plasma generating unit is a hollow cathode structure, adopts a sandwich structure composed of an upper metal electrode, a lower metal electrode and an insulating medium in the middle, and is provided with one or more holes penetrating the electrodes and the insulating medium.
Further, the metal electrode material may be copper, silver, aluminum, tungsten, platinum, etc., and the dielectric material may be an inorganic nonmetallic material such as SiO 2, a metal oxide material such as Al 2O3, an organic nonmetallic material including a PCB substrate, etc.
Further, the distance between the two electrodes is more than or equal to 1mm, and the diameter of micropores on the electrodes is more than or equal to 2mm; the diameter of the micropores of the dielectric layer is more than or equal to 10mm.
The plasma generating unit generates plasma by applying high voltage to the two ends of the electrode to make the gas in the micropores generate breakdown discharge. Preferably, the typical working gas is air. Thus, the corresponding plasma is an air plasma.
Further, microplasma refers to a plasma less than 1mm in a certain dimension.
Further, by changing the voltage output of the conversion unit and the electrode spacing of the generation unit, the following characteristic parameters of the plasma can be regulated and controlled: (1) peak electron temperature: 1eV-10eV. (2) The electron and ion densities can be adjusted to within 10 12/cm3-1016/cm3. (3) Typical active nitrogen-oxygen particles are less than or equal to 10 12/cm3 and comprise nitrogen ions (N 2 +), oxygen ions (O 2 +), nitrogen atoms (N), oxygen atoms (O), ozone (O 3) and the like.
The working principle of the ignition device based on hollow cathode discharge of the invention is as follows:
(1) An energetic agent is charged into the plasma generation region.
(2) The electrodes are connected to the high voltage power supply output.
(3) The power supply is turned on, the high voltage generated by the micro high voltage conversion unit is input to the micro plasma generation unit, transient high voltage is formed between the electrodes, and plasma is generated in the discharge area.
(4) The microplasma acts on the energetic medicament to realize ignition.
(5) If the energetic agent needs to be replaced, repeating the operations (1) - (4).
In summary, the air microplasma of the invention has the following characteristics:
(1) Unbalanced output characteristics: due to the strong electric field under the action of high voltage, electric energy is preferentially transmitted to electrons, so that the plasma has obvious unbalanced characteristics, and the temperature of electrons is far higher than that of gas.
(2) High and adjustable electron ion density: the adjustable range of electron and ion density of the air plasma is 10 12/cm3-1016/cm3, and the peak electron density is 1eV-10eV.
(3) High activity combustion-supporting ability: with air discharge, the energetic electrons in the plasma are accompanied by a large number of excitation and decomposition processes during ionization of atoms and molecules, and therefore, a large number of active nitrogen-oxygen particles including ground state atoms are also present in the electro-plasma: such as nitrogen (N), oxygen (O); ground state molecules: such as molecular oxygen (O 2) and ozone (O 3); excited state particles: the excited state forms corresponding to the ground state particles include excited state oxygen atoms (O1 s, O1d, N1p, etc.), singlet oxygen (1O2), etc. Ground or excited state ions: such as oxyanions (O -), superoxide anions (O 2-), and the like. The particles have extremely high oxidizing capacity, the density is less than or equal to 10 12/cm3, and the particles can serve as combustion improver, so that chemical reaction which is difficult to occur under common thermodynamic conditions is realized, and the ignition capacity is improved.
(4) Transient response capability; the air discharge plasma response time is closely related to the discharge gap voltage. When high voltage is applied to the two ends of the electrode, electrons are accelerated under the action of a strong electric field to obtain kinetic energy to impact atoms and molecules, and for an air gap under millimeter level, the plasma generation process is more than or equal to 10 mu s.
Further, the energetic agent described in the present device includes conventional primary explosive (such as lead stevenate, etc.) and nano thermite.
Preferably, the electrode material of the plasma generating device is copper, the thickness of the electrode is more than or equal to 1mm, the diameter of the electrode is 0.5mm-10mm, the diameter of the discharge hole is 0.1mm-1mm, and the distance between the pin and the axle center is 1mm-2mm.
Preferably, the insulating medium material of the plasma generating device is alumina, the thickness is more than or equal to 1mm, the diameter is 0.5mm-12mm, the diameter of the axis discharge hole is 0.1mm-1mm, and the distance between the pin hole and the axis is 1mm-2mm.
In general, compared with the existing device, the ignition device realized by the invention has the following beneficial effects:
(1) The safety and reliability are good: unlike the linear transduction mode of conventional electrothermal ignition device, the novel ignition device based on air discharge microplasma has special nonlinear transduction characteristic, when the externally applied voltage is smaller than the breakdown voltage of the gas, the plasma can not be generated, and when the externally applied voltage exceeds the breakdown voltage of the plasma, the gas can be subjected to avalanche ionization to form the plasma, so that the nonlinear conversion from electric energy to kinetic energy, molecular and atomic potential energy, radiant energy and other forms is completed.
(2) The ignition effect is good: the plasma generated by the ignition device has very high electron and ion density, high electron temperature and high active nitrogen-oxygen particle concentration less than or equal to 10 13/cm3, wherein the high electron density and the high electron temperature are key for igniting the energetic medicament, and the active nitrogen-oxygen particles have combustion-supporting effect, so that the medicament is combusted more fully, and the ignition effect equivalent to that of a semiconductor bridge is observed through the ignition effect.
(3) The ignition performance is adjustable: compared with the conventional ignition devices such as sensitive bridge wires, semiconductor bridges, explosion foils and the like, the ignition device provided by the invention has the advantages that the ignition performance is regulated and controlled only by adjusting the electrode spacing and the input voltage parameters, so that the specific insensitive energetic medicament is reliably ignited. If the sensitivity of thermite is higher, the ignition can be realized in a normal plasma working mode. And the sensitivity of ignition powder such as boron/potassium nitrate is low, and the plasma power is required to be obviously improved to be less than or equal to 20W. And compared with the initiating explosive device, the initiating explosive device has the advantages of long service life and capability of being ignited for multiple times.
(4) The structure is simple: the device has low material cost and maintenance cost and good economy; the operation does not need additional ventilation, and the carrying of the gas cylinder is avoided.
(5) The power is low, the requirement on input voltage is low, high-power supply equipment is not required to be carried, and the portable and assembled power supply device has good portability and assembly performance.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention.
Fig. 2 is another version of a microplasma generating unit in the apparatus of the invention.
Fig. 3 shows two other forms of microplasma generating units in the apparatus of the invention (a being in the form of an array of form one, b being in the form of an array of form 2).
Fig. 4 shows an embodiment of a film charge for a microplasma generating unit in an apparatus of the present invention (a film charge of form one, b film charge of form two, c film charge of form one array, and d film charge of form two array).
Fig. 5 shows an embodiment of hole loading of a microplasma generating unit in an apparatus of the present invention (a is a first form of columnar charge, b is a second form of columnar charge, c is an array of columnar charges, and d is a second array of columnar charges).
Fig. 6 is a schematic diagram of a micro high voltage conversion unit module.
Fig. 7 is a graph showing typical discharge voltage-current characteristics of the present device.
Fig. 8 is a graph showing the effect of the device on igniting thermite.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein: the micro high-voltage conversion device comprises a 1-micro high-voltage conversion unit, a 2-unit interface, a 3-lower electrode pin, a 4-upper electrode pin, a 5-lower electrode, a 6-insulating medium, a 7-upper electrode, an 8-discharge hole, a 9-energetic material, a 10-rectifying circuit and an 11-voltage doubling circuit module.
Detailed Description
In order to further explain the present invention, the following describes in detail the embodiments of a low-power ignition device and method based on hollow cathode discharge according to the present invention with reference to the accompanying drawings.
The plasma ignition device mainly comprises two large units, including a miniature high-voltage conversion unit and a miniature plasma generation unit, wherein the input end of the miniature plasma generation unit is connected with the output end of the miniature high-voltage conversion unit. The miniature high-voltage conversion unit belongs to an excitation power supply part and transmits energy to the miniature plasma generation unit by generating high voltage in the forms of direct current, high-frequency alternating current, pulse and the like; the miniature plasma generating unit is designed through a special structure, so that the voltage loaded at two ends of the electrode is enough to break down the air in the discharge hole, the gas breaks down and discharges to generate plasma, and high-energy electrons and active particles in the plasma are utilized to ignite the energetic medicament.
The design core of the device is the design of the miniature high-voltage conversion unit and the structural design of the plasma generation unit. The design core of the miniature high-voltage conversion unit is to convert input energy of low voltage and high current into high voltage energy. The design core of the microplasma generating unit is the control of the inter-electrode distance and the design of the discharge hole.
Based on this, the invention provides a low-power ignition device and an ignition method based on hollow cathode discharge, as shown in fig. 1, which is embodiment 1 of the invention.
The ignition device based on hollow cathode discharge of a low power is composed of two parts, as shown in fig. 6, in this embodiment, the miniature high-voltage conversion unit 1 is composed of a rectification circuit 10 and a voltage doubling circuit 11, wherein the rectification circuit 10 is a single-tube self-excited rectification circuit composed of a triode and a transformer winding, and the collector voltage of the triode forms positive feedback through a resistor and a feedback winding above the transformer. When the low-voltage input power supply is electrified by the high-voltage conversion unit, the current at two ends of the inductor cannot be suddenly changed, the triode rapidly enters a saturated state from an off state, the collector voltage is reduced to cause the base current to be reduced, the triode rapidly enters the off state from the saturated state, and the whole process is repeated, so that the direct current is converted into the high-frequency alternating current and is applied to the primary winding of the transformer. The high-frequency alternating current generated by the rectifying circuit is boosted by the transformer and then is input into the voltage doubling circuit for boosting and rectifying. The voltage doubling circuit uses diode guiding function to store the voltages in the respective capacitors, then connects several capacitors in series to form voltage superposition, and finally applies the obtained high-voltage alternating current to the unit interface 2 and inputs the high-voltage alternating current to the micro plasma generating unit.
In this embodiment, the plasma generating unit is composed of an upper electrode, a lower electrode and an insulating medium in the middle, the electrode material is made of copper, silver, aluminum, tungsten, platinum and other materials, the shape is round, the upper electrode 7 is connected with a wire as a pin at a certain distance from the axis, the distance depends on the size of the discharge aperture, the electrode, the insulating medium material and the thickness, the typical distance is less than or equal to 0.5mm, the upper electrode pin 4 passes through pin holes reserved on the insulating medium 6 and the lower electrode 5 to be connected with the micro booster unit interface 2, and a discharge hole 8 is reserved at the axis of the upper electrode 7. The material of the lower electrode 5 is the same as that of the upper electrode 5, and a pin is arranged at the central symmetry position of the pin of the upper electrode 7 and is connected with the micro booster unit interface 2. The insulating medium 6 is a non-metal oxide material such as SiO 2, a metal oxide material such as Al 2O3, an organic non-metal material including a PCB substrate and the like, and is circular in shape, the radius of the insulating medium is slightly larger than that of the upper electrode plate and the lower electrode plate, a discharge hole 8 is formed in the axis part, a through hole is formed in a pin corresponding to the upper electrode 7, and a sleeve is connected to separate the upper electrode pin from the lower electrode. The upper and lower electrodes and the axis of the insulating medium 6 are kept on the same straight line, so that the discharge hole 8 is kept in a penetrating state. When the micro high voltage conversion unit 1 applies high frequency high voltage to the upper and lower electrodes, the formed strong electric field ionizes the air first to generate plasma, wherein electrons oscillate between two opposite cathode potential drop regions, resulting in a high ionization and excitation rate, so that ionization is further enhanced, more high energy particles are generated, and the electromagnetic protection capability is enhanced because no connection of conducting wires exists in the working region.
An ignition method of low-power hollow cathode microplasma discharge comprises the following steps:
S1, loading an energetic medicament 9 into a plasma generation region.
S2, inputting a low-voltage direct current signal to the miniature high-voltage conversion unit
S3, the miniature high-voltage conversion unit converts the starting signal into high-voltage output
S4, the high-voltage driving plasma generating unit is used for generating unbalanced plasma through gas breakdown in the hole, so that the thermite film or the grain installed on the unbalanced plasma is ignited.
S5, repeating the operations S1-S4 if the energetic medicament needs to be replaced.
Specifically, the low-voltage high-current start signal in step S1 is a dc signal, and the voltage range thereof is 1.5V-12V.
Specifically, the output signal in step S2 of this embodiment may be an ac signal, where the peak-to-peak range is 1kV-30kV, and the current signal is a nonlinear abrupt current.
Specifically, the film-type charge and the column-type charge method in this embodiment are shown in fig. 4 and 5, respectively.
In this example, the voltammetric characteristic curve at the time of plasma generation is shown in fig. 7 when 3v,1a of energy is input to the micro high voltage conversion unit. The ignition effect is shown in fig. 8, and it can be seen that the ignition effect can reliably ignite the medicament, and the flame height is equivalent to the ignition effect of the semiconductor bridge.
The present invention is not limited to the above embodiments, but is capable of modification in all aspects and variations in all aspects without departing from the spirit and scope of the present invention.
Claims (9)
1. An ignition device for a low power hollow cathode microplasma, comprising: a micro high voltage conversion unit, a micro plasma generation unit; the miniature plasma generating unit adopts a sandwich structure consisting of an upper electrode, a lower electrode and an insulating medium in the middle, and one or more holes penetrating the electrodes and the insulating medium are formed in the sandwich structure to serve as a plasma generating area; the distance between the two electrodes is more than or equal to 1mm, and the diameter of the micropores of the electrodes is more than or equal to 1mm; the input end of the microplasma generating unit is connected with the output end of the miniature high-voltage conversion unit; the upper electrode is connected with a lead wire at a certain distance from the axis as a pin, the pin of the upper electrode passes through a pin hole reserved on the insulating medium layer and the lower electrode to be connected with a miniature booster unit interface, a pin is arranged at the central symmetry position of the lower electrode and the pin of the upper electrode and is connected with a miniature booster unit output unit interface, a through hole is arranged at the position of the insulating medium corresponding to the pin of the upper electrode, and a sleeve is connected to separate the pin of the upper electrode from the pin of the lower electrode.
2. The ignition device of the low-power hollow cathode microplasma according to claim 1, wherein the miniature high-voltage conversion unit comprises a rectifying circuit and a booster circuit, the whole appearance of the miniature high-voltage conversion unit is a cylinder or a cuboid, the diameter of the cylinder is more than or equal to 3cm, and the height of the cylinder is more than or equal to 10cm; the length and the width of the cuboid are more than or equal to 3cm, and the height is more than or equal to 10cm; the voltage of the input end can be increased to 1kV-30kV and then output, the input direct-current voltage signal is more than or equal to 12V, the current is more than or equal to 3A, the output voltage is in high-voltage direct current, alternating current and pulse modes, and the total power is more than or equal to 36W.
3. The ignition device of the low-power hollow cathode microplasma according to claim 1, wherein the electrode material of the microplasma generating unit is copper, silver, aluminum, tungsten or platinum material, and the insulating dielectric material is SiO 2 inorganic nonmetallic material, al 2O3 metallic oxide material or organic nonmetallic material comprising PCB substrate; the electrode and the insulating medium are round in shape, the thickness is more than or equal to 1mm, the diameter is 0.5mm-10mm, and the diameter of the insulating medium material is larger than that of the electrode material.
4. A method of igniting an ignition device employing the low power hollow cathode microplasma of any one of claims 1 to 3, comprising the steps of:
s1, loading an energetic medicament into a plasma generation region;
s2, inputting a low-voltage high-current starting signal to the miniature high-voltage conversion unit;
s3, converting the low-voltage direct-current starting signal into high-voltage output by the miniature high-voltage conversion unit;
S4, driving the plasma generating unit by high voltage to generate air unbalanced plasma, and igniting the energetic explosive column embedded in the micropore or the energetic film adhered above the micropore to realize ignition;
S5, repeating the operations S1-S4 if the energetic medicament needs to be replaced.
5. The ignition method according to claim 4, wherein the input in step S1 is low voltage direct current with a voltage range of 1.5V-12V; the output in step S2 is in the form of high-voltage direct current, alternating current and pulse.
6. The ignition method according to claim 4, wherein the amplitude of the direct current output voltage is 1kV-30kV; the peak-to-peak value of the alternating current output voltage is 1kV-30kV, and the frequency is 50Hz-300MHz; the amplitude of the pulse output voltage is 1kV-30kV, and the rising edge is that: more than or equal to 100 mu s, and the frequency is 50Hz-300MHz; the discharge current waveform of the plasma is nonlinear abrupt current, and the ignition has transient response capability: for the air gap under millimeter level, the plasma generation process is more than or equal to 10 mu s.
7. The ignition method of claim 4 wherein the working gas is air, the plasma is a non-equilibrium plasma, and the characteristic parameters include: (1) peak electron temperature: 1eV-10eV; (2) The electron and ion density adjustment range is 10 12/cm3-1016/cm3; (3) Typical active nitrogen-oxygen particles are less than or equal to 10 12/cm3 and comprise nitrogen ions (N 2 +), oxygen ions (O 2 +), nitrogen atoms (N), oxygen atoms (O) and ozone (O 3).
8. The ignition method according to claim 4, wherein the energetic agent in step S3 is a lead stevenate primer, a thermite pyrotechnic charge or a boron/potassium nitrate primer, and the primer or thermite applied to the surface of the device is adhered to the upper side of the discharge hole in the form of a film or is deposited in the hole in the form of a grain.
9. The method of claim 4, wherein the ignition is performed in a plurality of ignitions.
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