A power supply for air glow discharge and an air glow discharge control method

Abstract

The application discloses a power supply and an air glow discharge control method. The power supply comprises a controller, a DC voltage source, a boost circuit, a zero voltage detection circuit, a matching network and AC boost circuit and an output voltage sampling circuit. The controller is used for controlling the boost circuit to input current to the matching network and AC boost circuit. The DC voltage source is used for supplying power to the boost circuit. The boost circuit is used for inputting current through the first input end point or the second input end point of the matching network and AC boost circuit. The zero voltage detection circuit is used for detecting whether the first voltage at the first input end point or the second voltage at the second input end point is zero. The matching network and AC boost circuit are used for performing boost operation according to the current input by the boost circuit to output high-voltage alternating current. The energy discharge circuit is used for controlling the current flowing into the matching network and AC boost circuit. The output voltage sampling circuit is used for collecting the voltage peak value output by the matching network and AC boost circuit. Whether the resonance frequency is stable can be judged, and better air glow discharge effect is obtained.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a power supply, air glow discharge control method, apparatus, storage medium, and air glow discharge control device for air glow discharge. Background Technology

[0002] Air glow discharge is a phenomenon in which an alternating high voltage is applied between two electrodes, and the air breaks down and discharges at a high frequency by taking advantage of the characteristic that the change in air polarity lags behind that of the electrodes. The power supply used for air glow discharge has two characteristics: (1) high voltage, the voltage needs to be very high, generally the peak value can reach more than ten kilovolts; (2) alternating, the polarity of the two electrodes needs to change.

[0003] Existing air glow discharge power supplies suffer from unstable discharge, which can easily damage the switching transistors and cause load fluctuations, resulting in significant load impact. Summary of the Invention

[0004] To address the aforementioned issues, this application proposes a power supply, an air glow discharge control method, a storage medium, and an air glow discharge control device for air glow discharge, which solves at least the following problems: how to achieve frequency tracking; how to achieve soft switching of the switching transistor; how to reduce switching transistor losses and impacts during frequency tracking; and how to maintain the high voltage peak within a reasonable range to ensure glow discharge performance.

[0005] The first aspect of this application provides a power supply for air glow discharge, comprising:

[0006] The controller is electrically connected to the boost circuit, the zero-voltage detection circuit, the energy discharge circuit, and the output voltage sampling circuit, respectively. It is used to control the boost circuit to input current to the matching network and the AC boost circuit through the first and second input terminals of the matching network and the AC boost circuit in sequence, so as to generate a high-voltage alternating current in the matching network and the AC boost circuit. When the voltage peak value of the high-voltage alternating current meets the preset conditions, the controller controls the energy discharge circuit to adjust the current flowing into the matching network and the AC boost circuit.

[0007] A DC voltage source, electrically connected to the boost circuit, is used to supply power to the boost circuit;

[0008] A boost circuit, electrically connected to the matching network and the AC boost circuit, is used to input current to the matching network and the AC boost circuit through the first input terminal or the second input terminal of the matching network and the AC boost circuit;

[0009] A zero-voltage detection circuit, electrically connected to the matching network and the AC boost circuit, is used to send a switching signal to the controller when a first voltage at the first input terminal or a second voltage at the second input terminal is detected to be zero.

[0010] A matching network and AC boost circuit are electrically connected to the energy discharge circuit to perform a boost operation on the current input to the boost circuit to output a high-voltage alternating current.

[0011] An energy discharge circuit is used to control the current flowing into the matching network and the AC boost circuit, so as to keep the high voltage peak of the output voltage of the matching network and the AC boost circuit within a preset range;

[0012] The output voltage sampling circuit is electrically connected to the matching network and the AC boost circuit, and is used to collect the voltage peak value of the high voltage alternating current output by the matching network and the AC boost circuit, and send the voltage peak value to the controller.

[0013] Furthermore, in response to the switching signal of the switching transistor, the controller performs the following actions:

[0014] When the first voltage is zero, the first switch is controlled to turn off and the second switch is controlled to turn on, so as to input current to the matching network and the AC boost circuit through the second input terminal; and

[0015] When the second voltage is zero, the second switch is controlled to be turned off and the first switch is controlled to be turned on, so as to input current to the matching network and AC boost circuit through the first input terminal.

[0016] Furthermore, the boost circuit includes:

[0017] The first differential mode inductor has one end electrically connected to the DC voltage source and the other end connected in series with the first switching transistor. It is used to charge when the first switching transistor is turned on and the second switching transistor is turned off, and to discharge when the second switching transistor is turned on and the first switching transistor is turned off.

[0018] The first switching transistor has one end electrically connected to the first differential mode inductor and the first input terminal of the matching network and the AC boost circuit, and the other end grounded. It is used to control the first differential mode inductor to input current to the matching network and the AC boost circuit through the first input terminal in response to the first discharge command of the controller.

[0019] The second differential mode inductor has one end electrically connected to the DC voltage source and the other end connected in series with the second switch transistor. It is used to charge when the second switch transistor is turned on and the first switch transistor is turned off, and to discharge when the first switch transistor is turned on and the second switch transistor is turned off.

[0020] The second switching transistor has one end electrically connected to the second differential inductor and the second input terminal of the matching network and the AC boost circuit, and the other end grounded. It is used to control the second differential inductor to input current to the matching network and the AC boost circuit through the second input terminal in response to the second discharge command of the controller.

[0021] Furthermore, the matching network and AC boost circuit include:

[0022] The first capacitor is connected in parallel with the primary side of the step-up transformer and is used to generate an alternating current on the primary side of the step-up transformer according to the current sequentially input to the two ends of the first capacitor by the step-up circuit.

[0023] A step-up transformer is used to step up the alternating current and output a high-voltage alternating current through the secondary winding of the step-up transformer.

[0024] Furthermore, the energy discharge circuit includes:

[0025] The first energy discharge sub-circuit is formed by a first resistor and a third capacitor connected in parallel, and one end of the first energy discharge sub-circuit is electrically connected to the first input terminal.

[0026] The third switching transistor, connected in series with the other end of the first energy discharge sub-circuit and then grounded, is used to reduce the current input to the matching network and AC boost circuit through the boost circuit in response to the first discharge command of the controller.

[0027] Furthermore, the energy discharge circuit also includes:

[0028] The second energy discharge sub-circuit is formed by a second resistor and a fourth capacitor connected in parallel, and one end of the second energy discharge sub-circuit is electrically connected to the second input terminal.

[0029] The fourth switching transistor, connected in series with the other end of the second energy discharge sub-circuit and then grounded, is used to reduce the current input to the matching network and AC boost circuit through the boost circuit in response to the second discharge command of the controller.

[0030] Furthermore, the current flowing into the matching network and AC boost circuit can be controlled by adjusting the discharge duty cycle of the third or fourth switch.

[0031] The discharge duty cycle of the third switch includes the ratio of the turn-on time of the third switch to the turn-off time of the first switch; the discharge duty cycle of the fourth switch includes the ratio of the turn-on time of the fourth switch to the turn-off time of the second switch.

[0032] Furthermore, the zero-voltage detection circuit includes:

[0033] A first zero-voltage detection circuit is electrically connected to the first input terminal and is used to issue a first switching signal when the first voltage at the first input terminal is detected to be zero, so that the controller controls the switching transistor to perform a switching operation.

[0034] The second zero-voltage detection circuit is electrically connected to the second input terminal and is used to issue a second switching signal when the second voltage at the second input terminal is detected to be zero, so that the controller controls the switching transistor to perform a switching operation.

[0035] A second aspect of this application provides a method for controlling air glow discharge, implemented based on the aforementioned power supply for air glow discharge, the method comprising:

[0036] When the zero-voltage detection circuit detects that the first voltage at the first input terminal or the second voltage at the second input terminal in the matching network and AC boost circuit is zero, a switching signal is sent to the controller.

[0037] In response to the switching signal of the switching transistor, the controller controls the boost circuit to input current to the matching network and the AC boost circuit in sequence through the first input terminal and the second input terminal, so as to generate high voltage alternating current in the matching network and the AC boost circuit.

[0038] The high voltage peak value of the high voltage alternating current is detected by the output voltage sampling circuit;

[0039] When the high voltage peak meets the preset conditions, the energy discharge circuit controls the current flowing into the matching network and the AC boost circuit to keep the high voltage peak of the output voltage of the matching network and the AC boost circuit within the preset range.

[0040] Furthermore, it also includes:

[0041] Controls the first switch to turn off and the second switch to turn on;

[0042] If the tracking count value is less than a preset threshold during the switching duration, the first zero-voltage detection circuit detects whether it sends a first switching transistor switching signal to the controller.

[0043] In the absence of a detected first switch switching signal, the tracking count value is incremented, the second switch is turned off and the first switch is turned on, and the switch duration is increased by one time unit to obtain the updated switch duration.

[0044] If the tracking count value is not less than a preset threshold, the resonant frequency is determined to be unstable.

[0045] Furthermore, after detecting whether the first zero-voltage detection circuit sends a first switching signal to the controller during the switching duration, the method further includes:

[0046] If a first switch switching signal is detected, the total duration between the current time of sending the first switch switching signal and the previous time of sending the second switch switching signal is recorded. The total duration is used as the updated switch duration, and the tracking count value is cleared. The second switch is then turned off and the first switch is turned on.

[0047] Furthermore, it also includes:

[0048] When the resonant frequency is unstable, increase the discharge duty cycle of the third and / or fourth switching transistors in the energy discharge circuit to reduce the current flowing into the matching network and AC boost circuit.

[0049] Furthermore, it also includes:

[0050] If the tracking count value is less than a preset threshold, the second zero-voltage detection circuit is checked to see if it sends a second switching signal to the controller within the updated switching duration.

[0051] In the absence of a detected second switch switching signal, the tracking count value is incremented, the first switch is turned off and the second switch is turned on, and the switch duration is increased by one time unit to obtain the updated switch duration.

[0052] If a second switch switching signal is detected, the total duration between the current time of sending the second switch switching signal and the previous time of sending the first switch switching signal is recorded. The total duration is used as the updated switch duration, and the tracking count value is cleared. The first switch is then turned off and the second switch is turned on.

[0053] A third aspect of this application provides a computer-readable storage medium storing a computer program that can be executed by one or more processors to implement the method described above.

[0054] A fourth aspect of this application provides an air glow discharge control device, including a memory and one or more processors, wherein a computer program is stored on the memory, and the memory and the one or more processors are communicatively connected to each other, and the computer program, when executed by the one or more processors, implements the method described above.

[0055] Compared with the prior art, the technical solution of this application has the following advantages or beneficial effects:

[0056] 1. The high voltage peak is controllable and can autonomously track the resonant frequency through a zero voltage signal. When the frequency is stable, the discharge duty cycle is adjusted according to the feedback of the high voltage circuit to stabilize the high voltage peak and maintain it within a reasonable range, thereby obtaining a better air glow discharge effect.

[0057] 2. It can determine whether the resonant frequency is stable. When it is unstable, it reduces the energy input to the matching network to reduce the impact and protect the load and circuit devices. When it returns to stability, it returns to the normal glow discharge state. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0059] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and their descriptions in this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0060] Figure 1 A schematic diagram of the structure of a power supply for air glow discharge provided in an embodiment of this application;

[0061] Figure 2 A schematic diagram of the circuit structure of a power supply for air glow discharge provided in an embodiment of this application;

[0062] Figure 3 A flowchart illustrating an air glow discharge control method provided in this application embodiment;

[0063] Figure 4 A voltage waveform diagram of a first input terminal or a second input terminal provided in an embodiment of this application;

[0064] Figure 5 A flowchart illustrating the tracking of resonant frequency using a zero-voltage signal is provided as an embodiment of this application.

[0065] Figure 6 A flowchart illustrating another air glow discharge control method provided in this application embodiment;

[0066] Figure 7 A connection block diagram of an air glow discharge control device provided in an embodiment of this application;

[0067] Figure label:

[0068] Figure 2 In the diagram, 1-first differential mode inductor, 2-second differential mode inductor, 3-first switching transistor, 4-second switching transistor, 5-step-up transformer, 6-first input terminal, 7-second input terminal, 8-first capacitor, 9-first resistor, 10-third capacitor, 11-third switching transistor, 12-second resistor, 13-fourth capacitor, 14-fourth switching transistor. Detailed Implementation

[0069] The following detailed description of the embodiments of this application, in conjunction with the accompanying drawings, will provide a thorough understanding of how this application uses technical means to solve technical problems and achieve corresponding technical effects, enabling its implementation. The embodiments of this application and the various features within them can be combined with each other without conflict, and all resulting technical solutions are within the protection scope of this application.

[0070] Example 1

[0071] This embodiment provides a power supply for air glow discharge. Figure 1 A schematic diagram of a power supply for air glow discharge provided in an embodiment of this application is shown below. Figure 1 As shown, the power supply in this embodiment includes:

[0072] The controller is electrically connected to the boost circuit, the zero-voltage detection circuit, the energy discharge circuit, and the output voltage sampling circuit, respectively. It is used to control the boost circuit to input current to the matching network and the AC boost circuit through the first and second input terminals of the matching network and the AC boost circuit in sequence, so as to generate a high-voltage alternating current in the matching network and the AC boost circuit. When the voltage peak value of the high-voltage alternating current meets the preset conditions, the controller controls the energy discharge circuit to adjust the current flowing into the matching network and the AC boost circuit.

[0073] A DC voltage source, electrically connected to the boost circuit, is used to supply power to the boost circuit;

[0074] A boost circuit, electrically connected to the matching network and the AC boost circuit, is used to input current to the matching network and the AC boost circuit through the first input terminal or the second input terminal of the matching network and the AC boost circuit;

[0075] A zero-voltage detection circuit, electrically connected to the matching network and the AC boost circuit, is used to send a switching signal to the controller when a first voltage at the first input terminal or a second voltage at the second input terminal is detected to be zero.

[0076] A matching network and AC boost circuit are electrically connected to the energy discharge circuit to perform a boost operation on the current input to the boost circuit to output a high-voltage alternating current.

[0077] An energy discharge circuit is used to control the current flowing into the matching network and the AC boost circuit, so as to keep the high voltage peak of the output voltage of the matching network and the AC boost circuit within a preset range;

[0078] The output voltage sampling circuit is electrically connected to the matching network and the AC boost circuit, and is used to collect the voltage peak value of the high voltage alternating current output by the matching network and the AC boost circuit, and send the voltage peak value to the controller.

[0079] For further details, please refer to... Figure 2 , Figure 2 This is a schematic diagram of the circuit structure of a power supply for air glow discharge provided in an embodiment of this application.

[0080] In some embodiments, the boost circuit includes:

[0081] The first differential mode inductor 1 has one end electrically connected to the DC voltage source and the other end connected in series with the first switch 3. It is used to charge when the first switch 3 is turned on and the second switch 4 is turned off, and to discharge when the second switch 4 is turned on and the first switch 3 is turned off.

[0082] The first switching transistor 3 has one end electrically connected to the first differential mode inductor 1 and the first input terminal 6 of the matching network and AC boost circuit, and the other end grounded. It is used to control the first differential mode inductor 1 to input current to the matching network and AC boost circuit through the first input terminal 6 in response to the first discharge command of the controller.

[0083] The second differential mode inductor 2 has one end electrically connected to the DC voltage source and the other end connected in series with the second switch 4. It is used to charge when the second switch 4 is turned on and the first switch 3 is turned off, and to discharge when the first switch 3 is turned on and the second switch 4 is turned off.

[0084] The second switch 4 has one end electrically connected to the second differential inductor 2 and the second input terminal 7 of the matching network and AC boost circuit, and the other end grounded. It is used to control the second differential inductor 2 to input current to the matching network and AC boost circuit through the second input terminal 7 in response to the controller's second discharge command. In some embodiments, the controller, in response to the switch switching signal, performs the following actions:

[0085] When the first voltage is zero, the first switch 3 is controlled to turn off and the second switch 4 is controlled to turn on, so as to input current to the matching network and the AC boost circuit through the second input terminal 7; and

[0086] When the second voltage is zero, the second switch 4 is controlled to turn off and the first switch 3 is controlled to turn on, so as to input current to the matching network and AC boost circuit through the first input terminal 6.

[0087] Optionally, the drive signal 1 provided by the controller can control the first switching transistor 3. One end of the first switching transistor 3 is grounded, and the other end is connected to the first differential mode inductor 1, the matching network, and the first input terminal 6 of the AC boost circuit; the other end of the first differential mode inductor 1 is connected to the output of the DC voltage source. The drive signal 2 provided by the controller can control the second switching transistor 4. One end of the second switching transistor 4 is grounded, and the other end is connected to the second differential mode inductor 2, the matching network, and the second input terminal 7 of the AC boost circuit; the other end of the second differential mode inductor 2 is connected to the output of the DC voltage source.

[0088] Optionally, the first switch 3 and the second switch 4 operate in a push-pull configuration. When the first switch 3 is connected to ground and the second switch 4 is disconnected, the output voltage of the DC voltage source charges the first differential mode inductor 1, and the energy from the second differential mode inductor 2 (charged in the previous cycle) flows as current from the second input terminal 7 into the matching network and the AC boost circuit. Then, the second switch 4 is connected to ground and the first switch 3 is disconnected. The output voltage of the DC voltage source charges the second differential mode inductor 2, and the energy from the first differential mode inductor 1 (charged in the previous cycle) flows as current from the first input terminal 6 into the matching network and the AC boost circuit. This alternating operation generates an alternating current in the primary winding of the boost transformer 5, which is then transferred to the secondary winding of the boost transformer 5. After boosting, an alternating high voltage is formed in the secondary winding of the boost transformer 5. The energy flowing into the matching network determines the peak value of the high voltage.

[0089] As will be understood by those skilled in the art, the discharge command is generated and issued by the controller when the voltage at the first input terminal 6 or the second input terminal 7 is detected to be zero.

[0090] In some embodiments, the matching network and AC boost circuit include:

[0091] The first capacitor 8 is connected in parallel with the primary of the step-up transformer 5 and is used to generate an alternating current on the primary side of the step-up transformer 5 according to the current sequentially input to the two ends of the first capacitor 8 by the step-up circuit.

[0092] The step-up transformer 5 is used to step up the alternating current and output high-voltage alternating current through the secondary winding of the step-up transformer 5.

[0093] Optionally, the first capacitor 8 is connected in parallel with the primary winding of the step-up transformer 5 to form a matching network, and the secondary winding of the step-up transformer 5 is connected to the glow discharge electrode.

[0094] Since the glow discharge electrodes are driven by high voltage, a step-up transformer 5 is used for isolation, and the high voltage is obtained by stepping up the voltage.

[0095] Optionally, the voltage between the five secondary windings of the step-up transformer can be extracted and input to the output voltage sampling circuit. After processing by the output voltage sampling circuit, a voltage sampling signal is obtained, and the data is then input to the controller.

[0096] Optionally, to achieve soft switching of the first switching transistor 3 and the second switching transistor 4, a first capacitor 8 is added to shape the voltage of the secondary winding of the step-up transformer 5 into a sine wave, thereby achieving zero-voltage switching of the first switching transistor 3 and the second switching transistor 4. The voltage of the first input terminal 6 and the second input terminal 7 is detected by a zero-voltage detection circuit. When the voltage change of the first input terminal 6 or the second input terminal 7 is zero, the first switching transistor 3 and the second switching transistor 4 are switched to either the off or on state.

[0097] In some embodiments, the energy discharge circuit includes:

[0098] The first energy discharge sub-circuit is formed by the first resistor 9 and the third capacitor 10 connected in parallel, and one end of the first energy discharge sub-circuit is electrically connected to the first input terminal 6.

[0099] The third switch 11 is connected in series with the other end of the first energy discharge sub-circuit and then grounded, and is used to reduce the current input to the matching network and AC boost circuit through the boost circuit in response to the first discharge command of the controller.

[0100] In some embodiments, the energy discharge circuit further includes:

[0101] The second energy discharge sub-circuit is formed by the second resistor 12 and the fourth capacitor 13 connected in parallel, and one end of the second energy discharge sub-circuit is electrically connected to the second input terminal 7.

[0102] The fourth switch 14, connected in series with the other end of the second energy discharge sub-circuit and then grounded, is used to reduce the current input to the matching network and AC boost circuit through the boost circuit in response to the second discharge command of the controller. In some embodiments, the magnitude of the current flowing into the matching network and AC boost circuit is controlled by adjusting the discharge duty cycle of the third switch 11 or the fourth switch 14;

[0103] The discharge duty cycle of the third switch tube 11 includes the ratio of the turn-on time of the third switch tube 11 to the turn-off time of the first switch tube 3; the discharge duty cycle of the fourth switch tube 14 includes the ratio of the turn-on time of the fourth switch tube 14 to the turn-off time of the second switch tube 4.

[0104] Optionally, the third capacitor 10 and the first resistor 9 are connected in parallel to form a first energy discharge sub-circuit, with one end connected to the first input terminal 6 of the matching network and the AC boost circuit, and the other end connected to one end of the third switch 11. The other end of the third switch 11 is grounded, and the third switch 11 is controlled by the drive signal 3 provided by the controller. The fourth capacitor 13 and the second resistor 12 are connected in parallel to form a second energy discharge sub-circuit, with one end connected to the second input terminal 7 of the matching network and the AC boost circuit, and the other end connected to one end of the fourth switch 14. The other end of the fourth switch 14 is grounded, and the fourth switch 14 is controlled by the drive signal 4 provided by the controller.

[0105] Optionally, when the fourth switch 14 is off and the second switch 4 is on, the energy of the first differential mode inductor 1 (charged in the previous cycle) enters the matching network and AC boost circuit from the first input terminal 6 as current. At this time, if the third switch 11 is turned on, some energy will flow into the energy discharge circuit, thereby reducing the energy flowing into the matching network and AC boost circuit. The ratio of the on-time of the third switch 11 to the off-time of the first switch 3 is defined as the discharge duty cycle of the third switch 11. Adjusting the discharge duty cycle of the third switch 11 can control the energy flowing into the matching network and AC boost circuit. Similarly, adjusting the discharge duty cycle of the fourth switch 14 can also control the energy flowing into the matching network and AC boost circuit. The voltage sampling signal is obtained by processing the high voltage through the output voltage sampling circuit and input to the controller to obtain the magnitude of the high voltage peak. When the high voltage peak is too low, the discharge duty cycle is reduced to increase the energy entering the matching network and AC boost circuit; when the high voltage peak is too high, the discharge duty cycle is increased to reduce the energy entering the matching network and AC boost circuit, thereby maintaining the high voltage peak within a reasonable range.

[0106] It should be noted that the preset conditions include the high voltage peak value (the voltage peak value of the high voltage alternating current) being greater than the preset maximum value and the high voltage peak value being less than the preset minimum value. The preset maximum value, preset minimum value, and preset range of the high voltage peak value can all be set according to actual needs, and no special restrictions are made here.

[0107] As those skilled in the art will understand, the aforementioned discharge command is generated and issued by the controller when the high voltage peak value of the output high voltage alternating current is detected to be too high or too low.

[0108] In some embodiments, the zero-voltage detection circuit includes:

[0109] The first zero-voltage detection circuit is electrically connected to the first input terminal 6 and is used to issue a first switching signal when the first voltage at the first input terminal 6 is detected to be zero, so that the controller controls the switching transistor to perform a switching operation.

[0110] The second zero-voltage detection circuit is electrically connected to the second input terminal 7 and is used to issue a second switching signal when the second voltage at the second input terminal 7 is detected to be zero, so that the controller controls the switching transistor to perform a switching operation.

[0111] Optionally, the voltage at the first input terminal 6 of the matching network and AC boost circuit is input to the first zero-voltage detection circuit. When the voltage at the first input terminal 6 becomes zero, a first zero-voltage signal is generated and fed back to the controller. Similarly, the voltage at the second input terminal 7 of the matching network and AC boost circuit is input to the first zero-voltage detection circuit. When the voltage at the second input terminal 7 becomes zero, a first zero-voltage signal is generated and fed back to the controller. The controller controls the first and second switching transistors in the boost circuit to sequentially input current to the matching network and AC boost circuit.

[0112] Optionally, when a first switching signal is issued, the controller controls the first switching transistor 3 to turn on and the second switching transistor 4 to turn off; when a second switching signal is issued, the controller controls the second switching transistor 4 to turn on and the first switching transistor 3 to turn off.

[0113] In some possible cases, the switching transistor described in this embodiment includes a switching triode.

[0114] It should be noted that the output voltage sampling circuit includes a high-voltage sampling circuit.

[0115] It should be further noted that the parameters of the resistor, capacitor, and inductor in this embodiment can be selected according to actual needs, and no special limitations are made here.

[0116] Those skilled in the field can understand. Figure 1 and Figure 2 The structure shown does not constitute a limitation on the power supply of the embodiments of this application. It may include more or fewer modules / units than shown, or combine certain modules / units, or have different module / unit arrangements.

[0117] The power supply for air glow discharge provided in this embodiment includes: a controller, electrically connected to a boost circuit, a zero-voltage detection circuit, an energy discharge circuit, and an output voltage sampling circuit, respectively, for controlling the boost circuit to input current to the matching network and the AC boost circuit sequentially through the first and second input terminals of the matching network and the AC boost circuit, so as to generate a high-voltage alternating current in the matching network and the AC boost circuit, and controlling the energy discharge circuit to adjust the current flowing into the matching network and the AC boost circuit when the voltage peak value of the high-voltage alternating current meets a preset condition; a DC voltage source, electrically connected to the boost circuit, for supplying power to the boost circuit; and a boost circuit, electrically connected to the matching network and the AC boost circuit, for supplying current to the matching network through the first or second input terminal of the matching network and the AC boost circuit. The system includes: an AC boost circuit input current; a zero-voltage detection circuit, electrically connected to the matching network and the AC boost circuit, used to send a switching signal to the controller when a first voltage at the first input terminal or a second voltage at the second input terminal is detected to be zero; a matching network and the AC boost circuit, electrically connected to the energy discharge circuit, used to boost the current input to the boost circuit to output a high-voltage alternating current; an energy discharge circuit, used to control the current flowing into the matching network and the AC boost circuit so that the high-voltage peak value of the output voltage of the matching network and the AC boost circuit is kept within a preset range; and an output voltage sampling circuit, electrically connected to the matching network and the AC boost circuit, used to collect the voltage peak value of the high-voltage alternating current output by the matching network and the AC boost circuit, and send the voltage peak value to the controller. The high voltage peak is controllable and can autonomously track the resonant frequency through a zero-voltage signal. When the frequency is stable, the discharge duty cycle is adjusted according to the feedback of the high voltage circuit to stabilize the high voltage peak and maintain it within a reasonable range, thereby achieving a better air glow discharge effect. It can determine whether the resonant frequency is stable. When it is unstable, it reduces the energy input to the matching network to reduce the impact and protect the load and circuit devices. When it returns to stability, it returns to the normal glow discharge state.

[0118] Example 2

[0119] This embodiment provides a method for controlling air glow discharge. Figure 3 A flowchart of an air glow discharge control method provided in this application embodiment is shown below. Figure 3 As shown, the method in this embodiment includes:

[0120] Step S310: When the zero-voltage detection circuit detects that the first voltage at the first input terminal or the second voltage at the second input terminal in the matching network and AC boost circuit is zero, a switching signal is sent to the controller.

[0121] Step S320: In response to the switching signal of the switching transistor, the controller controls the boost circuit to input current to the matching network and the AC boost circuit through the first input terminal and the second input terminal in sequence, so as to generate high voltage alternating current in the matching network and the AC boost circuit.

[0122] Step S330: Detect the high voltage peak value of the high voltage alternating current through the output voltage sampling circuit;

[0123] Step S340: When the high voltage peak meets the preset conditions, control the energy discharge circuit to adjust the current flowing into the matching network and the AC boost circuit so that the high voltage peak of the output voltage of the matching network and the AC boost circuit is kept within the preset range.

[0124] In some embodiments, it also includes:

[0125] Controls the first switch to turn off and the second switch to turn on;

[0126] If the tracking count value is less than a preset threshold during the switching duration, the first zero-voltage detection circuit detects whether it sends a first switching transistor switching signal to the controller.

[0127] In the absence of a detected first switch switching signal, the tracking count value is incremented, the second switch is turned off and the first switch is turned on, and the switch duration is increased by one time unit to obtain the updated switch duration.

[0128] If the tracking count value is not less than a preset threshold, the resonant frequency is determined to be unstable.

[0129] In some embodiments, after detecting whether the first zero-voltage detection circuit sends a first switching signal to the controller during the switching duration, the method further includes:

[0130] If a first switch switching signal is detected, the total duration between the current time of sending the first switch switching signal and the previous time of sending the second switch switching signal is recorded. The total duration is used as the updated switch duration, and the tracking count value is cleared. The second switch is then turned off and the first switch is turned on.

[0131] In some embodiments, it also includes:

[0132] When the resonant frequency is unstable, increase the discharge duty cycle of the third and / or fourth switching transistors in the energy discharge circuit to reduce the current flowing into the matching network and AC boost circuit.

[0133] In some embodiments, it also includes:

[0134] If the tracking count value is less than a preset threshold, the second zero-voltage detection circuit is checked to see if it sends a second switching signal to the controller within the updated switching duration.

[0135] In the absence of a detected second switch switching signal, the tracking count value is incremented, the first switch is turned off and the second switch is turned on, and the switch duration is increased by one time unit to obtain the updated switch duration.

[0136] If a second switch switching signal is detected, the total duration between the current time of sending the second switch switching signal and the previous time of sending the first switch switching signal is recorded. The total duration is used as the updated switch duration, and the tracking count value is cleared. The first switch is then turned off and the second switch is turned on.

[0137] Optionally, due to the instability of air glow discharge, the load may fluctuate, affecting the frequency of the voltage sine wave on the secondary side of the step-up transformer. Therefore, frequency tracking is required. With the first capacitor added, the voltage waveform at the first or second input terminal is as follows: Figure 4 As shown, frequency tracking and frequency resonance stability are determined by utilizing the time difference between the first input endpoint and the second input endpoint reaching the zero-point voltage.

[0138] An alternative frequency tracking method can be referenced. Figure 5 .Depend on Figure 4 It can be seen that, assuming the switching duration ( Figure 4 The value of tb in the middle is greater than the voltage reached at zero this time. Figure 4 When ta is in the middle, the switch can still be soft switched, and the switching duration ( Figure 4 The value of tb in the middle is greater than the voltage reached at zero this time. Figure 4 When the frequency is stable (tc), soft switching cannot be achieved. The number of consecutive times soft switching fails is limited, resulting in minimal circuit impact and low switching losses during frequency tracking. However, when frequency fluctuations are large, the number of consecutive times soft switching fails is numerous, indicating resonant instability. This causes significant circuit impact and high switching losses during frequency tracking. To reduce circuit impact and losses, a larger discharge duty cycle is applied to lower the primary and secondary voltages of the step-up transformer.

[0139] It should be noted that performing an auto-increment operation on the tracking count value includes incrementing the tracking count value by 1; increasing the switch duration by one time unit includes increasing the switch duration by 0.2ms, and the specific value of one time unit can be set according to the actual situation or actual needs.

[0140] It should be further noted that the preset threshold can be set according to actual needs or circumstances, and no specific restrictions are made here.

[0141] For example, if the half-cycle time fluctuation is about 2ms when stable, and the unit time is set to 0.2ms (the specific value should be determined according to the actual situation), then the tracking count value will generally not exceed 10. The upper limit of the tracking count can be set to 20 (preset threshold). When the tracking count reaches the upper limit, it means that the frequency fluctuation has exceeded 4ms, indicating that the frequency has fluctuated severely, and it is judged as resonant instability.

[0142] Furthermore, to achieve a better air glow discharge effect, it is advisable to maintain the high voltage peak at a relatively high and stable value. Therefore, under stable frequency conditions, the discharge duty cycle is adjusted according to the feedback from the high voltage circuit to stabilize the high voltage peak. The overall workflow is as follows: Figure 6 As shown.

[0143] By utilizing the air glow discharge control method provided in this embodiment, the high-voltage peak value is controllable and can autonomously track the resonant frequency through a zero-voltage signal. When the frequency is stable, the discharge duty cycle is adjusted based on feedback from the high-voltage circuit to stabilize the high-voltage peak value and maintain it within a reasonable range, thereby achieving a better air glow discharge effect. Specifically: when the zero-voltage detection circuit detects that the first voltage at the first input terminal or the second voltage at the second input terminal in the matching network and AC boost circuit is zero, a switching signal is sent to the controller. In response to the switching signal, the controller controls the boost circuit to sequentially input current into the matching network and AC boost circuit through the first and second input terminals to generate a high-voltage alternating current in the matching network and AC boost circuit. The high-voltage peak value of the high-voltage alternating current is detected by the output voltage sampling circuit. When the high-voltage peak value meets a preset condition, the energy discharge circuit adjusts the current flowing into the matching network and AC boost circuit to keep the high-voltage peak value of the output voltage of the matching network and AC boost circuit within a preset range. It can determine whether the resonant frequency is stable. When it is unstable, it reduces the energy input to the matching network to reduce the impact and protect the load and circuit devices. When it returns to stability, it returns to the normal glow discharge state.

[0144] Example 3

[0145] This embodiment also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it can implement the method steps as described in the foregoing method embodiments. This embodiment will not repeat the details here.

[0146] Computer-readable storage media may individually include computer programs, data files, data structures, etc., or combinations thereof. The computer-readable storage media or computer program may be specifically designed and understood by those skilled in the art of computer software, or the computer-readable storage media may be known and available to those skilled in the art of computer software. Examples of computer-readable storage media include: magnetic media, such as hard disks, floppy disks, and magnetic tapes; optical media, such as CD-ROMs and DVDs; magneto-optical media, such as optical discs; and hardware devices specifically configured to store and execute computer programs, such as read-only memory (ROM), random access memory (RAM), flash memory; or servers, application stores, etc. Examples of computer programs include machine code (e.g., code generated by a compiler) and files containing high-level code that can be executed by a computer using an interpreter. The described hardware devices may be configured to function as one or more software modules to perform the operations and methods described above, and vice versa. Furthermore, computer-readable storage media may be distributed across networked computer systems, allowing for the decentralized storage and execution of program code or computer programs.

[0147] Example 4

[0148] This embodiment also provides an air glow discharge control device. Figure 7 A connection block diagram of an air glow discharge control device provided in this application embodiment is shown below. Figure 7 As shown, the control device 700 may include: one or more processors 701, memory 702, multimedia components 703, input / output (I / O) interface 704, and communication components 705.

[0149] One or more processors 701 are used to perform all or part of the steps as described in the foregoing method embodiments. Memory 702 is used to store various types of data, which may include, for example, instructions for any application or method in the control device 700, as well as application-related data.

[0150] One or more processors 701 may be implemented as an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, for performing the methods as described in the foregoing method embodiments.

[0151] The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0152] Multimedia component 703 may include a screen, which may be a touchscreen, and an audio component for outputting and / or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in memory or transmitted via a communication component. The audio component also includes at least one speaker for outputting audio signals.

[0153] I / O interface 704 provides an interface between one or more processors 701 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons can be virtual buttons or physical buttons.

[0154] The communication component 705 is used for wired or wireless communication between the control device 700 and other devices. Wired communication includes communication via network ports, serial ports, etc.; wireless communication includes Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, 5G, or one or more combinations thereof. Therefore, the corresponding communication component 705 may include a Wi-Fi module, a Bluetooth module, and an NFC module.

[0155] In summary, this application provides a power supply, a method for controlling air glow discharge, a storage medium, and a device for controlling air glow discharge. The power supply includes: a controller electrically connected to a boost circuit, a zero-voltage detection circuit, an energy discharge circuit, and an output voltage sampling circuit, respectively, for controlling the boost circuit to input current to the matching network and the AC boost circuit sequentially through the first and second input terminals of the matching network and the AC boost circuit, thereby generating a high-voltage alternating current in the matching network and the AC boost circuit; and, when the voltage peak value of the high-voltage alternating current meets a preset condition, controlling the energy discharge circuit to adjust the current flowing into the matching network and the AC boost circuit; a DC voltage source electrically connected to the boost circuit for supplying power to the boost circuit; and a boost circuit electrically connected to the matching network and the AC boost circuit for supplying current to the matching network and the AC boost circuit through the first or second input terminal of the matching network and the AC boost circuit. The system includes: an input current; a zero-voltage detection circuit, electrically connected to the matching network and the AC boost circuit, used to send a switching signal to the controller when a first voltage at the first input terminal or a second voltage at the second input terminal is detected to be zero; a matching network and the AC boost circuit, electrically connected to the energy discharge circuit, used to boost the current input to the boost circuit to output a high-voltage alternating current; an energy discharge circuit, used to control the current flowing into the matching network and the AC boost circuit to keep the high-voltage peak value of the output voltage of the matching network and the AC boost circuit within a preset range; and an output voltage sampling circuit, electrically connected to the matching network and the AC boost circuit, used to collect the voltage peak value of the high-voltage alternating current output by the matching network and the AC boost circuit, and send the voltage peak value to the controller. The high voltage peak is controllable and can autonomously track the resonant frequency through a zero-voltage signal. When the frequency is stable, the discharge duty cycle is adjusted according to the feedback of the high voltage circuit to stabilize the high voltage peak and maintain it within a reasonable range, thereby achieving a better air glow discharge effect. It can determine whether the resonant frequency is stable. When it is unstable, it reduces the energy input to the matching network to reduce the impact and protect the load and circuit devices. When it returns to stability, it returns to the normal glow discharge state.

[0156] It should also be understood that the methods or systems disclosed in the embodiments provided in this application can also be implemented in other ways. The method or system embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functions, and operations of possible implementations of methods and apparatus according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, computer program segment, or part of a computer program, which includes one or more computer programs for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings, and may actually be executed substantially in parallel. They may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or can be implemented using a combination of dedicated hardware and computer programs.

[0157] In this application, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "including one..." does not exclude the presence of other identical elements in the process, method, apparatus, or device that includes the element; the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the number or sequential relationship of the indicated technical features; in the description of this application, unless otherwise stated, the terms "multiple" or "many" mean at least two; if a server is described, it should be noted that a server can be an independent physical server or terminal, or a server cluster consisting of multiple physical servers, or a cloud server capable of providing basic cloud computing services such as cloud servers, cloud databases, cloud storage, and CDN; if a smart terminal or mobile device is described in this application, it should be noted that a smart terminal or mobile device can be a mobile phone, tablet computer, smartwatch, netbook, wearable electronic device, personal digital assistant (PDA), augmented reality (AR) device, virtual reality (VR) device, smart TV, smart speaker, personal computer (PC). The application may include, but is not limited to, computers (PCs), and does not impose any special restrictions on the specific form of smart terminals or mobile devices.

[0158] Finally, it should be noted that in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "a single example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0159] Although embodiments of this application have been shown and described above, it is to be understood that the above embodiments are exemplary and the content is only for the purpose of facilitating understanding of this application, and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be determined by the scope defined in the appended claims.

Claims

1. A power supply for air glow discharge, characterized in that, include: The controller is electrically connected to the boost circuit, the zero-voltage detection circuit, the energy discharge circuit, and the output voltage sampling circuit, respectively. It is used to control the boost circuit to input current to the matching network and the AC boost circuit through the first and second input terminals of the matching network and the AC boost circuit in sequence, so as to generate a high-voltage alternating current in the matching network and the AC boost circuit. When the voltage peak value of the high-voltage alternating current meets the preset conditions, the controller controls the energy discharge circuit to adjust the current flowing into the matching network and the AC boost circuit. A DC voltage source, electrically connected to the boost circuit, is used to supply power to the boost circuit; A boost circuit, electrically connected to the matching network and the AC boost circuit, is used to input current to the matching network and the AC boost circuit in sequence through the first input terminal and the second input terminal of the matching network and the AC boost circuit. A zero-voltage detection circuit, electrically connected to the matching network and the AC boost circuit, is used to send a switching signal to the controller when a first voltage at the first input terminal or a second voltage at the second input terminal is detected to be zero. A matching network and AC boost circuit are electrically connected to the energy discharge circuit to perform a boost operation on the current input to the boost circuit to output a high-voltage alternating current. An energy discharge circuit is used to control the current flowing into the matching network and the AC boost circuit, so as to keep the high voltage peak of the output voltage of the matching network and the AC boost circuit within a preset range; The output voltage sampling circuit is electrically connected to the matching network and the AC boost circuit, and is used to collect the voltage peak value of the high voltage alternating current output by the matching network and the AC boost circuit, and send the voltage peak value to the controller.

2. The power supply for air glow discharge according to claim 1, characterized in that, The controller, in response to the switching signal of the switching transistor, performs the following actions: When the first voltage is zero, the first switch is controlled to turn off and the second switch is controlled to turn on, so as to input current to the matching network and the AC boost circuit through the second input terminal; and When the second voltage is zero, the second switch is controlled to be turned off and the first switch is controlled to be turned on, so as to input current to the matching network and AC boost circuit through the first input terminal.

3. The power supply for air glow discharge according to claim 1, characterized in that, The boost circuit includes: The first differential mode inductor has one end electrically connected to the DC voltage source and the other end connected in series with the first switching transistor. It is used to charge when the first switching transistor is turned on and the second switching transistor is turned off, and to discharge when the second switching transistor is turned on and the first switching transistor is turned off. The first switching transistor has one end electrically connected to the first differential mode inductor and the first input terminal of the matching network and the AC boost circuit, and the other end grounded. It is used to control the first differential mode inductor to input current to the matching network and the AC boost circuit through the first input terminal in response to the first discharge command of the controller. The second differential mode inductor has one end electrically connected to the DC voltage source and the other end connected in series with the second switch transistor. It is used to charge when the second switch transistor is turned on and the first switch transistor is turned off, and to discharge when the first switch transistor is turned on and the second switch transistor is turned off. The second switching transistor has one end electrically connected to the second differential inductor and the second input terminal of the matching network and the AC boost circuit, and the other end grounded. It is used to control the second differential inductor to input current to the matching network and the AC boost circuit through the second input terminal in response to the second discharge command of the controller.

4. The power supply for air glow discharge according to claim 1, characterized in that, The matching network and AC boost circuit include: The first capacitor is connected in parallel with the primary side of the step-up transformer and is used to generate an alternating current on the primary side of the step-up transformer according to the current sequentially input to the two ends of the first capacitor by the step-up circuit. A step-up transformer is used to step up the alternating current and output a high-voltage alternating current through the secondary winding of the step-up transformer.

5. The power supply for air glow discharge according to claim 1, characterized in that, The energy discharge circuit includes: The first energy discharge sub-circuit is formed by a first resistor and a third capacitor connected in parallel, and one end of the first energy discharge sub-circuit is electrically connected to the first input terminal. The third switching transistor, connected in series with the other end of the first energy discharge sub-circuit and then grounded, is used to reduce the current input to the matching network and AC boost circuit through the boost circuit in response to the first discharge command of the controller.

6. The power supply for air glow discharge according to claim 5, characterized in that, The energy discharge circuit also includes: The second energy discharge sub-circuit is formed by a second resistor and a fourth capacitor connected in parallel, and one end of the second energy discharge sub-circuit is electrically connected to the second input terminal. The fourth switching transistor, connected in series with the other end of the second energy discharge sub-circuit and then grounded, is used to reduce the current input to the matching network and AC boost circuit through the boost circuit in response to the second discharge command of the controller.

7. The power supply for air glow discharge according to claim 6, characterized in that, The current flowing into the matching network and AC boost circuit is controlled by adjusting the discharge duty cycle of the third or fourth switch. The discharge duty cycle of the third switch includes the ratio of the turn-on time of the third switch to the turn-off time of the first switch; the discharge duty cycle of the fourth switch includes the ratio of the turn-on time of the fourth switch to the turn-off time of the second switch.

8. The power supply for air glow discharge according to claim 1, characterized in that, The zero-voltage detection circuit includes: A first zero-voltage detection circuit is electrically connected to the first input terminal and is used to issue a first switching signal when the first voltage at the first input terminal is detected to be zero, so that the controller controls the switching transistor to perform a switching operation. The second zero-voltage detection circuit is electrically connected to the second input terminal and is used to issue a second switching signal when the second voltage at the second input terminal is detected to be zero, so that the controller controls the switching transistor to perform a switching operation.

9. A method for controlling air glow discharge, characterized in that, The method, based on the power supply for air glow discharge according to any one of claims 1 to 8, comprises: When the zero-voltage detection circuit detects that the first voltage at the first input terminal or the second voltage at the second input terminal in the matching network and AC boost circuit is zero, a switching signal is sent to the controller. In response to the switching signal of the switching transistor, the controller controls the boost circuit to input current to the matching network and the AC boost circuit in sequence through the first input terminal and the second input terminal, so as to generate high voltage alternating current in the matching network and the AC boost circuit. The high voltage peak value of the high voltage alternating current is detected by the output voltage sampling circuit; When the high voltage peak meets the preset conditions, the energy discharge circuit controls the current flowing into the matching network and the AC boost circuit to keep the high voltage peak of the output voltage of the matching network and the AC boost circuit within the preset range.

10. The air glow discharge control method according to claim 9, characterized in that, Also includes: Controls the first switch to turn off and the second switch to turn on; If the tracking count value is less than a preset threshold during the switching duration, the first zero-voltage detection circuit detects whether it sends a first switching transistor switching signal to the controller. In the absence of a detected first switch switching signal, the tracking count value is incremented, the second switch is turned off and the first switch is turned on, and the switch duration is increased by one time unit to obtain the updated switch duration. If the tracking count value is not less than a preset threshold, the resonant frequency is determined to be unstable.

11. The air glow discharge control method according to claim 10, characterized in that, After detecting whether the first zero-voltage detection circuit sends a first switching signal to the controller during the switching duration, the method further includes: If a first switch switching signal is detected, the total duration between the current time of sending the first switch switching signal and the previous time of sending the second switch switching signal is recorded. The total duration is used as the updated switch duration, and the tracking count value is cleared. The second switch is then turned off and the first switch is turned on.

12. The air glow discharge control method according to claim 10, characterized in that, Also includes: When the resonant frequency is unstable, increase the discharge duty cycle of the third and / or fourth switching transistors in the energy discharge circuit to reduce the current flowing into the matching network and AC boost circuit.

13. The air glow discharge control method according to claim 11, characterized in that, Also includes: If the tracking count value is less than a preset threshold, the second zero-voltage detection circuit is checked to see if it sends a second switching signal to the controller within the updated switching duration. In the absence of a detected second switch switching signal, the tracking count value is incremented, the first switch is turned off and the second switch is turned on, and the switch duration is increased by one time unit to obtain the updated switch duration. If a second switch switching signal is detected, the total duration between the current time of sending the second switch switching signal and the previous time of sending the first switch switching signal is recorded. The total duration is used as the updated switch duration, and the tracking count value is cleared. The first switch is then turned off and the second switch is turned on.

14. A computer-readable storage medium, characterized in that, The computer program stored in the computer-readable storage medium, when executed by one or more processors, implements the method as described in any one of claims 9 to 13.

15. An air glow discharge control device, characterized in that, It includes a memory and one or more processors, wherein a computer program is stored on the memory, and the memory and the one or more processors are communicatively connected to each other. When the computer program is executed by the one or more processors, it performs the method as described in any one of claims 9 to 13.

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