74 results about "Ignition voltage" patented technology

The invention discloses an ignition control method of a remote plasma source in the technical field of remote plasma sources, which comprises the following steps: S1, setting a gas current excitation threshold value, and introducing excitation gas; s2, judging whether an ignition signal is received or not, and if yes, closing a relay and entering a constant current stage; s3, whether system ignition is normal or not is judged, and if not, the ignition voltage is adjusted through a self-learning type ignition threshold value calibration method; s4, the output power is improved, and the ignition voltage is adjusted through an ignition threshold calibration method during the period; s5, entering a constant power stage when the output power reaches the full-load power; according to the self-learning type ignition threshold value calibration method, gas flow, gas pressure and cavity temperature are collected in real time, a current load impedance value is predicted through an LSF-BP model, and an ignition voltage threshold value is updated according to the current load impedance value. According to the method, the ignition threshold is dynamically adjusted according to the operation condition, the ignition stability can be effectively improved, and equipment damage and maintenance cost are reduced.

The present invention discloses a method for testing the matching of an ignition element and an ignition agent of an electronic detonator, comprising the following steps: confirming whether to use a long-second or short-second quantity and then performing a dipping process; selecting a suitable ignition element according to the resistance; selecting a suitable ignition test box to perform an ignition sensitivity test, obtaining a minimum ignition voltage and a maximum non-ignition voltage, and determining an initial discharge voltage and a test step length; recording ignition and non-ignition situations; statistically analyzing the effective sample size; calculating a data validity judgment factor and a sample standard deviation, and determining a data validity judgment condition; calculating ignition voltages with different ignition probabilities; and performing an ignition reliability test. If ≥1 ignition fails, and if the failure is caused by the ignition agent mismatch, the ignition agent and the ignition element are rematched and retested. The present invention provides a basis for correctly selecting the ignition agent and the ignition element and achieving precise matching between the ignition agent and the ignition element, is conducive to improving the ignition rate of the detonator, and has a simple and efficient operation method.

The utility model discloses an ignition voltage testing device for an ignition electric nozzle of an aero-engine, which comprises a base, a sliding rod is fixedly arranged at the upper part of the base, and a first fixing device, a second fixing device and a third fixing device are sequentially nested on the sliding rod from top to bottom; the first fixing device, the second fixing device and the third fixing device can move on the sliding rod in a reciprocating mode and can be fixed to the sliding rod through fixing screws. An oil cup is installed on the first fixing device, an oil dripping nozzle is installed on the second fixing device, a testing clamp is installed on the third fixing device, the oil dripping nozzle is communicated with the oil cup through a pipeline, at least one electric adjusting valve is arranged on the pipeline, and an ignition electric nozzle to be tested is installed in the testing clamp. And the discharge end of the ignition electric nozzle to be tested corresponds to the oil dripping port of the upper oil dripping nozzle. According to the utility model, the engine combustion chamber environment can be simulated to the greatest extent, the actual ignition voltage used for assembling an ignition electric nozzle with an engine can be tested, the test is more accurate, and the feasibility is higher.

Safety element, in particular for a motor vehicle power line, comprising - a control circuit and - a pyrotechnic fuse (2), wherein - the control circuit comprising a printed circuit board (24) - at least one measuring sensor, - at least one temperature sensor and - at least one processor (26) evaluating the measuring sensor and the temperature sensor, - the pyrotechnic safety device (2) - a first connecting tab (8a), - a second connecting tab (8b), - a separation point (16) arranged between the connecting tabs (8a, b), and - has a pyrotechnic drive acting on the separation point (16), wherein - the drive (12) has ignition contacts (14) on its side facing away from its explosive surface (22), and characterized in that, - the pyrotechnic fuse (2) is attached directly to the circuit board (24) at least in a form-fitting manner, - that the drive (12) is designed in such a way that it can be triggered both intrinsically and extrinsically, in which - in the event of an intrinsic triggering, the processor (26) applies an ignition voltage to the drive (12) via a connection between the processor (26) and the ignition contacts (14) and - the ignition contacts (14) are set up for connection to an external ignition signal and the external ignition signal is applied to the ignition contacts (14) during external triggering.

The invention discloses an electrolytic preheating-electrolytic ignition method for a three-electrode hydroxylamine nitrate liquid propellant, and belongs to the field of liquid rocket engines and electrochemistry. Three electrolysis electrodes are arranged in the electrolysis chamber and comprise two positive electrodes and one negative electrode, so that two groups of electrolysis electrode pairs are formed. The method comprises the following steps: injecting a nitric acid hydroxylamine-based liquid propellant into an electrolysis chamber, and electrifying a group of electrolysis electrodes to start electrolysis preheating; after the preset switching time is up, closing the current working electrolysis electrode pair, and switching to another group of non-working electrolysis electrodes to continue electrolysis; and low-voltage and rapid electrolytic ignition is realized. According to the three-electrode electrolysis structure, the time for ignition and reaction to reach the highest temperature can be shortened, and the system response speed is increased; the preheating and ignition voltage can be changed, and the large voltage adjusting and optimizing space is achieved; meanwhile, the electrolytic ignition current is relatively stable, and the instantaneous power consumption is small; and electrolysis power consumption can be saved, electrolysis electrode loss is reduced, and reuse of the electrode is facilitated.

The utility model discloses a direct-current high-voltage hydrogen furnace igniter, which is characterized in that a controller of the igniter outputs and controls the on-off state of a power field-effect tube Q1 through an external resistor-capacitor PWM (pulse width modulation) signal and a frequency signal, and generates a pulse signal controlled by a duty ratio according to an input reference voltage VREF and a feedback voltage VFB; a pulse signal is coupled to the grid electrode of the power field effect transistor Q1 through a resistor-capacitor connected in parallel. When the power field effect transistor Q1 is switched on, the current passes through the primary coil of the transformer T1. In the conduction period, high-frequency current generated by the power field effect transistor Q1 is transmitted to the secondary coil through the mutual inductance effect of the transformer T1. And the input voltage of the secondary coil of the transformer T1 is boosted to about 20000V high voltage. A high-voltage rectifying silicon column is arranged in the transformer T1, so that 20000v direct-current voltage is output, and the voltage is ignition voltage. According to the utility model, the operation risk can be reduced, the ignition safety of the hydrogen furnace is improved, and the interference to control equipment and surrounding electronic equipment is reduced.

The invention discloses a multi-insurance isolation triggered electromechanical fuze circuit system which comprises a power supply circuit, an ignition circuit and an isolation trigger circuit, and the isolation trigger circuit comprises a multi-insurance signal circuit and an ignition trigger circuit. The multi-fuse circuit has the advantages that the multi-fuse circuit has multiple fuses, isolated triggering and adjustable instantaneity, N paths of multi-fuses can be extended, the multi-fuse circuit is mainly used for monitoring and judging various pin pulling and time sequence states, signal voltage reference grounds of the multi-fuse circuit can be different from one another so as to ensure that an ignition circuit is triggered safely and reliably, a plurality of optocouplers and current-limiting resistors are adopted, and the safety of the ignition circuit is improved. The filter capacitors form a multi-path isolation trigger circuit, interference between signal voltage and ignition voltage is effectively isolated, the function of multiple insurance state confirmation can be achieved, the accident that an electromechanical fuse explodes by mistake is effectively avoided, and the circuit is simple in structure, low in power consumption, low in component cost and safe and reliable in performance.

The invention relates to a high-reliability ignition control system based on a dual-detection dual-drive mechanism, and belongs to the technical field of hardware circuit design. The test system receives a data stream signal sent by the PC monitoring system through a serial port cable and then sends a response data transmission signal to the high-reliability ignition control system through a communication cable; the high-reliability ignition control system carries out power supply identification signal detection and state identification signal detection, if the high-reliability ignition control system supplies power to a battery and is in a release state, an ignition control process is started, and an ignition voltage signal is fed back to the test system through a communication cable; otherwise, ignition control is not carried out; the test system processes the ignition voltage signal to obtain an ignition voltage value, and inputs the ignition voltage value to the PC monitoring system for display; and the ignition control adopts a double-switch control mode of an electromagnetic relay and a solid relay to realize short circuit and disconnection of an ignition circuit so as to ensure accurate control and high reliability of ignition. The device has the advantages of high safety, high reliability, multi-path ignition control, mistaken ignition prevention and the like.

The invention discloses an ignition method of a remote plasma source based on multi-process parameter regulation and control in the technical field of remote plasma sources, which comprises the following steps: according to different gas types, acquiring optimized gas pressure P, gas flow Q, chamber gas temperature T and minimum ignition breakdown voltage Vmin by an ignition regulation and control parameter acquisition method; p, Q and T in the reaction cavity are adjusted according to the optimized P, Q and T, and an ignition voltage threshold value is adjusted according to Vmin; and ignition is conducted according to the ignition voltage threshold value, and after ignition succeeds, P, Q and T are adjusted to preset technological parameters. According to the ignition method, through multi-parameter coordinated regulation and dynamic threshold design, the equipment damage risk caused by high-voltage ignition is reduced, the ignition success rate and the system stability are greatly improved, and the adaptability and reliability of equipment are remarkably improved.

The application provides a plasma electrically generated fire preparation system, process and application, the system comprises a working condition detection module, a multi-layer grid discharge structure module, a discharge parameter decision module and a high-voltage discharge control module; the working condition detection module is used for real-time detection of the gas working condition parameters in the ignition cavity; the multi-layer grid discharge structure module is arranged in the ignition cavity and is used for forming a plurality of metal mesh grid electrodes with optional spacing; the discharge parameter decision module is used for determining the ignition discharge parameters according to the current gas working condition parameters; the high-voltage discharge control module is used for applying high-voltage pulse voltage to the selected metal mesh grid electrode according to the ignition discharge parameters to complete the discharge fire generation process; the application sets the multi-layer metal mesh grid electrode and combines the gas working condition parameters to make self-adaptive decisions on the discharge layer and the ignition voltage, improves the success rate and stability of the plasma ignition, and enhances the adaptability of the system to the complex gas working condition changes.

The embodiment of the application discloses a detonation driving shock wave wind tunnel timing ignition system and an ignition method, the ignition system comprises: a timing ignition module, which is used for storing ignition energy and sequentially detonating a plurality of ignition filaments according to preset ignition information; a monitoring and predication module, which is used for monitoring environmental parameters before the ignition filaments are detonated and / or during the interval of the detonation of the plurality of ignition filaments, and predetermining the start and stop of subsequent ignition operations according to the monitoring result; a parameter monitoring module, which is used for monitoring the ignition environment and / or ignition parameters and outputting the monitoring result; a discharge module, which is used for discharging the ignition energy stored in the timing ignition module when the monitoring and predication module predetermines that subsequent ignition operations need to be stopped; and a control module, which is used for monitoring the ignition process and controlling the completion of the ignition process; and the preset ignition information comprises ignition time intervals and ignition voltages of each ignition channel. The embodiment of the application realizes the effect of improving the stability and uniformity of an experimental flow field and ensuring the reliability and stability of an ignition process.

The present application relates to the technical field of ignition electrode test, and discloses a method and device for testing the ignition voltage of an aero-engine ignition electrode, comprising allowing fuel to drop in drops on the discharge end of the ignition electrode under test; and obtaining the minimum ignition voltage of the ignition electrode under test by gradually increasing the ignition voltage in steps.The present application simulates the extreme situation in which fuel in the combustion chamber of an engine coagulates into drops, which are sprinkled and soak the discharge end of the ignition electrode, and tests the actual ignition voltage of the ignition electrode when it is assembled on an engine, so that the test result is more accurate and has higher reliability than the ignition voltage test of the ignition electrode of a previous aero-engine; and the test can be performed on ignition electrodes of different specifications and under different working conditions by setting the mounting seat, clamping assembly, supporting assembly and oil dripping assembly, so that the application range is wide; and the ignition electrode test scene is stabilized, so that the reliability of the test data is improved.

The application discloses an online performance detection method and system of an engine ignition system, which comprises outputting a driving signal to a measured ignition system; collecting a current signal of the measured ignition system to generate a current waveform and extracting a characteristic parameter according to the current waveform; comparing the characteristic parameter with a preset standard parameter range and outputting a diagnosis result of the measured ignition system according to a comparison result; and the characteristic parameter comprises a current amplitude, a response time and a spark duration. By collecting a current waveform of a secondary loop of an ignition coil and extracting three characteristic parameters of the response time, the current amplitude and the spark duration, and comparing the three characteristic parameters with a preset standard range, the ignition voltage, the response time and the spark duration of the ignition system can be detected without disassembling and contacting a spark plug on an engine assembly production line.

This application discloses a high-durability composite spark plug electrode material, its preparation method, and its application. It belongs to the technical field of spark plug electrode material preparation. The electrode material of this invention consists of a core layer and a surface composite layer. The core layer is a dispersion-strengthened alloy with iridium as the matrix, doped with rare earth oxides and refractory metals, possessing high-temperature strength, creep resistance, and a short melting point. The surface composite layer is a gradient functional material, consisting of a transition layer, an intermediate functional layer, and a surface nanolayer from the inside out. This invention achieves a strong metallurgical bond and a smooth transition of performance between the core layer and the surface composite layer through the synergistic design of the core layer components, the optimization of the multi-layer gradient structure of the surface composite layer, and the use of a special preparation process. This significantly improves resistance to electrical erosion and chemical corrosion, reduces ignition voltage, ensures the ignition stability and durability of the engine under extreme operating conditions, improves combustion efficiency, and achieves increased power and reduced fuel consumption.

The utility model belongs to the technical field of impedance matchers, and particularly relates to a high-voltage ignition starter of a plasma reaction cavity and an impedance matcher. The ignition starting device is applied to a plasma reaction cavity and comprises a control module, a driving module, an ignition module and a matching module, the control module is used for controlling the ignition module, and when the ignition module is started, an ignition voltage is provided for the plasma reaction cavity through a power frequency power source; and meanwhile, the control module controls the driving module to drive the matching module to provide impedance matching signals for the plasma cavity, so that the ignition starting device provided by the utility model can realize rapid starting of the plasma reaction cavity, and provides the impedance matching signals after ignition starting.

The invention discloses an airborne launching time sequence control system with multiple control modes, and relates to the technical field of airborne time sequence control power distribution, and the system comprises an ignition power supply circuit and a working power supply circuit. The output end of the ignition power circuit is connected with an ignition power line, the ignition voltage and current detection circuit is arranged on the ignition power line, the ignition power line is connected with a to-be-ignited load through the isolation drive circuit, and the output detection circuit is arranged at the output end of the isolation drive circuit. The output end of the working power supply circuit is connected with the controller, the input end of the switching value input detection circuit is connected with the flight control computer and the ignition load, and the output end of the switching value input detection circuit is connected into the controller; the controller is connected with the control end of the isolation driving circuit, the controller is further connected with the communication circuit, the application programming circuit and the onboard temperature detection circuit, and the communication circuit is further connected with the flight control computer. According to the invention, the technical problems of low reliability and high control difficulty in the prior art are solved.

According to an embodiment of the present invention, an ignition wake-up circuit includes: an input node receiving an ignition voltage as an input; an output node outputting a wake-up voltage; and the voltage sensing unit outputs a wake-up signal according to the magnitude of the ignition voltage. The voltage sensing unit outputs a wake-up signal when the ignition voltage reaches a voltage level greater than or equal to the first reference voltage from a voltage less than the first reference voltage, and outputs a low signal when the ignition voltage reaches a voltage level less than or equal to the second reference voltage from a voltage greater than the second reference voltage, and the first reference voltage is greater than the second reference voltage.

The invention provides a portable emission system signal path detection device and method, and the method comprises the steps: a mainboard carries out the detection of a signal path according to a power supply and ignition voltage analog quantity signal collected from an emission system (1), and a power-up signal transmitted to the signal path detection device by the emission system (1); the power supply and ignition voltage parameter index conformity of the output emission system (1) and the correctness of an aircraft emission signal channel are analyzed; the data analysis module (3) is used for extracting voltage parameters and transmitting channel signal key parameters from the memory analysis ratio and feeding back the parameters to the mainboard combination; the equipment self-checking module detects the mainboard combination, the interface conversion module and the data analysis module (3) and locates faults; and the mainboard combination and the data analysis module (3) are in communication interaction with the transmitting system (1) through the interface conversion module. As signal path detection equipment, the device has the function of simultaneously detecting the power supply voltage of a transmitting system, an ignition signal and the transmitting time sequence of an aircraft, and has great positive significance and practical value.

An embodiment of the present invention discloses an ignition device based on a VITA74 connector, comprising an overload sensor circuit, an ignition device detection circuit, a delayed ignition control circuit, and an ignition control circuit; the overload sensor circuit comprises an acceleration sensor and a solid-state relay, which drives multiple sets of contacts of the solid-state relay to close when the acceleration of the ignition device reaches an overload value, so that the ignition voltage of the ignition battery is connected to the ignition device; the delayed ignition control circuit outputs a delayed ignition output in response to the contact closure of the solid-state relay to ignite a first ignition head; the ignition device detection circuit comprises six photoelectric couplers; the input end of each photoelectric coupler is respectively connected to the output end of each ignition device, for receiving the output signal of each ignition control circuit, and the output end of each photoelectric coupler is used to output a detection signal; the ignition control circuit is used to output two ignition pulses to ignite the second ignition head and the third ignition head.

Control unit comprising a controller (11) and a memory unit, wherein the controller (11) and the storage unit (21) are supplied with energy independently of each other; the controller (11) is designed to provide the storage unit (21) with an output signal (S21) representing at least one parameter; the storage unit (21) is configured to store at least one parameter represented by the output signal (S21); the controller (11) is further configured to receive a readout signal (S41) representing at least one stored parameter from the storage unit (21) after a reset of the controller (11); the control unit is designed to be installed in a vehicle; and which at least one parameter represents a state of a steering wheel lock, a speed of the vehicle, a rotational speed of a drive of the vehicle or the ignition voltage of the vehicle.

The invention provides a method for EPS power-assisted slow ascending and slow descending, which comprises the following steps: defining an EPS power-assisted state set and a trigger condition set, and constructing an FSM model according to the EPS power-assisted state set and the trigger condition set; the EPS performs power-on initialization, monitors a front power-assisted state, an enable signal, a vehicle speed signal and an ignition voltage signal of the vehicle in real time, and inputs the signals into the FSM model; and a trigger condition is judged through an FSM model according to the front power assisting state in combination with the enable signal, the vehicle speed signal and the ignition voltage signal, a target power assisting state and power assisting current limitation are determined according to the trigger condition, and output of power assisting current is controlled through the power assisting current limitation in the target power assisting state. The method has the beneficial effects that dynamic self-adaptive adjustment of assisting power output under the complex working condition is achieved, assisting power matching is more accurate, assisting power mode switching transition is smoother, and the driving comfort and safety of a driver and passengers are effectively improved.

The invention relates to a method for operating a system for generating electromagnetic waves in the microwave range, wherein the system comprises a pulse generator for generating electrical pulses, a microwave generator (14) for generating microwaves, and a transmission line (13) between the pulse generator (10) and the microwave generator (14), wherein the method comprises: blocking a voltage output from the pulse generator (10) to the transmission line (13); after the blocking of the voltage output: outputting a voltage from the pulse generator (10) to the transmission line (13), wherein the voltage is below an ignition voltage of the microwave generator (14), in order to precharge the transmission line (13); after the precharging of the transmission line (13): outputting a voltage to the transmission line (13), said voltage being above the ignition voltage of the microwave generator (14), such that the microwave generator (14) generates electromagnetic waves in the microwave range.

An ignition device for a straddle-type vehicle in which a fuel tank is supported on an upper side of a pair of left and right tank rails of a vehicle body frame and in which an engine is supported on a lower side of the pair of left and right tank rails. The ignition device includes an ignition plug provided in the engine and configured to ignite an air-fuel mixture, an ignition coil configured to apply an ignition voltage to the ignition plug, and a plug cord configured to connect the ignition plug and the ignition coil. The ignition coil is located below the pair of left and right tank rails and located on a lateral side of a cylinder head cover of the engine, in a top view.

The invention relates to the technical field of casing cutting in well completion tools, in particular to a downhole tool ignition inspection panel and method, and the method comprises the steps that a simulation unit cable simulation circuit simulates cable resistance values of different depths, and a tool simulation circuit simulates the internal resistance of an energetic cutting tool and the internal resistance of an electromechanical balance anchor tool; the detection unit detects and displays the working current of the downhole tool ignition inspection panel and recognizes the current working state, and the current working state comprises the voltage needed by the electromechanical balance anchor switch leg and the voltage needed by exciting the energetic cutting tool to complete ignition. According to the invention, an inspection tool and a training tool are integrated, ignition voltage and current during actual cutting operation can be calculated when the device is used as the inspection tool, an instrument string is not needed when the device is used as the training tool, and instrument work is directly simulated; and double insurance of the indicating lamp and the ampere meter is arranged, so that when the indicating lamp is damaged, the ampere meter can visually observe the power supply current, and the instrument is prevented from being damaged by overvoltage or overcurrent caused by wrong calculation of the operation voltage.

The invention relates to a method for contactless ignition of an electric arc (1) between an electrode (2) of a welding head (3) and a material surface (4) of a workpiece (5) and a welding device (6). A first ignition voltage pulse having a first polarity or a second polarity is generated between the electrode (2) and the material surface (4). The electric arc (1) is maintained after ignition of the electric arc in the second polarity or in an alternating polarity. In the event of ignition failure, a sequence of ignition voltage pulses is generated according to a sequence scheme until the electric arc (1) is successfully ignited after the first ignition voltage pulse, wherein the sequence scheme comprises ignition voltage pulses having the first polarity and ignition voltage pulses having the second polarity, and an ignition pause is provided between the ignition voltage pulses having the first polarity and the ignition voltage pulses having the second polarity.

The application is suitable for the technical field of vehicle control, and provides a control method and device of an engine in a vehicle, a storage medium and the vehicle.The method comprises the following steps: monitoring the ignition voltage of the engine in the vehicle, and controlling the engine differently according to the size of the ignition voltage; compared with the prior method of directly starting the engine after receiving a starting instruction, the application sets different control strategies for the engine, and determines the control strategy to be used according to the ignition voltage, that is, determines the corresponding control strategy according to the current working condition of the vehicle, so that the control of the engine is more in line with the current working condition, the intelligence of the engine control is improved, and the vehicle failure caused by the engine is naturally reduced.

An integrated ignition gun for a torpedo ladle baking apparatus, comprising a T-shaped coal gas pipe (1). Ignition holes (2) are provided in the T-shaped coal gas pipe. The integrated ignition gun further comprises ceramic partition plates, ceramic bushings (3), pressure guide rods (4), and ignition electrodes (5). The ceramic partition plates, ceramic bushings (3), pressure guide rods (4), and ignition electrodes (5) are all arranged on two sides of the T-shaped coal gas pipe. Each ceramic bushing is fixed to the T-shaped coal gas pipe by means of a ceramic partition plate, and a pressure guide rod is sleeved in the ceramic bushing. One end of the pressure guide rod is connected to an ignition electrode, the other end of the pressure guide rod is arranged on one side of the ignition holes, and a spark is generated between an end portion of the pressure guide rod and the ignition holes after the ignition electrode receives an ignition voltage signal. The integrated ignition gun can perform automatic ignition, is safer and more reliable, solves the problem of conventional ignition apparatuses being unable to be used under extreme working conditions such as the high temperatures in torpedo ladles, and is convenient to use and convenient to disassemble and assemble.

The invention discloses a combustion furnace ignition method, system and device, and the method comprises the steps: receiving and responding to an ignition instruction, controlling a combustible gas pipeline of an igniter to release combustible gas, and controlling a combustion-supporting gas pipeline to release combustion-supporting gas; under the condition that the combustible gas and the combustion-supporting gas are mixed at the first end of the igniter, the actual voltage of an ignition electrode of the igniter is controlled to reach the preset ignition voltage; and an ignition detector of the igniter is controlled to detect the actual state of the ignition electrode, and whether ignition succeeds or not is judged according to the actual state. It can be seen that the igniter is arranged in the combustion furnace, the preset ignition voltage of the ignition electrode is obviously lower than the breakdown voltage provided by a high-voltage generator in the traditional technology on the basis of optimization of the gas breakdown characteristic in the high-temperature environment, and the ignition efficiency is improved; and the risk of tempering or poisonous gas leakage caused when the push-in type igniter is pulled out is avoided.

Ignition system for an internal combustion engine, comprising - a spark plug (7), - an ignition voltage generator for generating an ignition voltage for the spark plug (7), which includes - a first ignition coil (3a) with a primary winding (4a) and a secondary winding (5a) and - at least a second ignition coil (3b) with a primary winding (4b) and a secondary winding (5b), wherein the secondary winding (5a) of the first ignition coil and the secondary winding (5b) of the second coil are connected in parallel and are connected to each other without a diode in between, - a first switching device (9a) for selectively operating the first ignition coil in the charging state and the discharging state and - a second switching device (9a) for selectively operating the second ignition coil in the charging state and the discharging state, wherein the switching devices (9a, 9b) are switching transistors which are controlled by means of a soft-turn-on control and the respective switching transistor is switched on to put an ignition coil into the charging state, and wherein the ignition system is arranged such that - to ignite a spark, the first ignition coil (3a) and the at least second ignition coil (3b) are brought into the discharge state essentially simultaneously and - then the ignition coils (3a, 3b) are put into the discharge state in a time-shifted manner relative to each other.

The invention discloses a liquid cathode glow discharge ignition method for performing glow starting by utilizing the liquid level height of a measured sample. The method comprises the following working steps: applying a glow starting voltage, extracting and beating out the sample, increasing the height of a liquid water column, monitoring a glow starting current and maintaining stable glow. The invention relates to the technical field of atomic spectrum analysis, and has the beneficial effects that the pressure intensity and humidity of an experimental environment are precisely regulated and controlled through a precise regulator, so that the stability of glow discharge is guaranteed; the injection pump accurately controls the water sample flow and the conveying speed to ensure that the water sample is stably sprayed into the well-designed capillary tube to form a stable electric field; the propelling speed of the injection pump is increased at a constant speed, the height of a liquid water column is gradually increased, and when the distance between the anode rod and the water column is reduced to be smaller than the starting distance, ignition starting is smoothly completed.