Streaming sterilization device, control method thereof, electronic equipment and storage medium

Abstract

The invention discloses a streamer sterilization device and a control method thereof, electronic equipment and a storage medium. The streamer sterilization device comprises a power supply driving circuit and a dielectric barrier discharge generator for carrying out dielectric barrier discharge based on a driving power supply output by the power supply driving circuit, the power supply driving circuit comprises a square wave circuit used for outputting a square wave signal and a bias voltage circuit used for outputting a negative bias voltage signal. Wherein a square wave signal output by the square wave circuit and a negative bias voltage signal output by the bias voltage circuit are superposed and then power is supplied to the dielectric barrier discharge generator, so that the dielectric barrier discharge generator generates positive ions and / or negative ions. Thus, the dielectric barrier discharge generator can generate positive ions and / or negative ions as required based on the combination of the bias voltage circuit and the square wave circuit, then sterilization can be carried out based on the positive ions and / or air purification can be carried out based on the adsorption effect of the negative ions, the working performance of the streamer sterilization device can be improved, and the cost is low.

Description

Technical Field

[0001] The present application relates to the field of circuits, and in particular to a streamer sterilization device and a control method thereof, an electronic device and a storage medium. Background Art

[0002] In the related art, there is a streamer sterilization device based on dielectric barrier discharge (DBD). The principle of DBD is a non-equilibrium gas discharge in which an insulating medium is inserted into the discharge space, that is, a gas discharge phenomenon of low-temperature discharge plasma is generated in the air gap by inserting an insulating medium into the air gap between two metal electrodes. Dielectric barrier discharge is also called dielectric barrier corona discharge or silent discharge. During the discharge process, the air will be ionized to generate plasma; it can be widely used in the production of ozone, modification, grafting, surface tension improvement, cleaning and hydrophilic modification of polymer and metal films and plates.

[0003] The DBD-based streamer sterilization device can achieve the functions of air purification and / or sterilization. For example, integrating the streamer sterilization device on the air conditioner can effectively kill bacteria in the air duct of the air conditioner and in the room, and purify the air well.

[0004] In the related art, dielectric barrier discharge generators often generate single positive ions or negative ions, but the above single positive ions or negative ions are difficult to meet user needs; in addition, the above single positive ions or negative ions are easily accumulated on the conductor, thereby generating a strong discharge phenomenon, affecting the user experience. Summary of the invention

[0005] In view of this, an embodiment of the present application provides a streamer sterilization device and an electronic device having the same, aiming to improve the working performance of the streamer sterilization device.

[0006] The technical solution of the embodiment of the present application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a streamer sterilization device, comprising: a power drive circuit for boosting voltage and a dielectric barrier discharge generator for performing dielectric barrier discharge based on a driving power supply output by the power drive circuit;

[0008] The power drive circuit includes: a square wave circuit for outputting a positive square wave signal and a bias voltage circuit for outputting a negative bias voltage signal;

[0009] The positive square wave signal output by the square wave circuit is superimposed with the negative bias voltage signal output by the bias voltage circuit and then supplies power to the dielectric barrier discharge generator, so that the dielectric barrier discharge generator generates positive ions and / or negative ions.

[0010] In some embodiments, the square wave circuit includes: a self-excited oscillation circuit, a square wave generator, a resonant circuit and a first voltage doubling circuit; the self-excited oscillation circuit is used to generate an AC oscillation signal, the square wave generator is used to generate a square wave control signal, the resonant circuit includes a first transformer and a first switching circuit, the first switching circuit controls the primary winding of the first transformer to connect to the AC oscillation signal based on the square wave control signal, the secondary winding of the first transformer outputs a first voltage signal after boost conversion, and the first voltage signal is output as the positive square wave signal after voltage doubling and rectification by the first voltage doubling circuit.

[0011] In some embodiments, the bias voltage circuit includes: a variable pulse circuit, a second switching circuit, a second transformer and a second voltage doubling circuit; the second switching circuit controls the primary winding of the second transformer to connect to a low-voltage power supply based on the pulse signal output by the variable pulse circuit, and the secondary winding of the second transformer outputs a second voltage signal after boost conversion, and the second voltage signal is output as the negative bias voltage signal after voltage doubling and rectification by the second voltage doubling circuit.

[0012] In some implementations, the magnitude of the negative bias voltage signal varies in response to a change in the duty cycle of the pulse signal.

[0013] In a second aspect, the embodiment of the present application provides a control method of the streamer sterilization device described in the first aspect of the embodiment of the present application, comprising:

[0014] Obtaining the working mode of the streamer sterilization device;

[0015] Based on the working mode, controlling the working state of the bias voltage circuit;

[0016] Among them, the working mode includes a first working mode for generating positive ions and a second working mode for generating negative ions; in the first working mode, the square wave circuit is started and the bias voltage circuit is not started; in the second working mode, both the square wave circuit and the bias voltage circuit are started.

[0017] In some embodiments, the bias voltage circuit includes a variable pulse circuit, and the pulse signal output by the variable pulse circuit is used to adjust the magnitude of the negative bias voltage signal output by the bias voltage circuit. If the working mode is the second working mode, the working state of the bias voltage circuit is controlled, including:

[0018] The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made equal to the amplitude of the positive square wave signal output by the square wave circuit.

[0019] In some embodiments, the working mode further includes: a third working mode for alternately generating positive ions and negative ions. If the working mode is the third working mode, controlling the working state of the bias voltage circuit includes:

[0020] The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made smaller than the amplitude of the positive square wave signal output by the square wave circuit.

[0021] In some embodiments, the method further comprises:

[0022] If it is determined that the streamer sterilization device has been running in the first working mode for a first set time, the streamer sterilization device is controlled to switch from the first working mode to the second mode for a second set time and then return to the first working mode, and so on;

[0023] Alternatively, if it is determined that the streamer sterilization device has been running in the second working mode for a third set time, the streamer sterilization device is controlled to switch from the second working mode to the first mode for a fourth set time and then return to the second working mode, and so on.

[0024] In some embodiments, the streamer sterilization device further comprises: a fan for adjusting the flow rate of the airflow flowing through the dielectric barrier discharge generator, and the method further comprises:

[0025] Based on the rotation speed of the fan, the duty cycle of the pulse signal is adjusted.

[0026] In a third aspect, the present application embodiment provides a control device for the streamer sterilization device described in the first aspect of the present application embodiment, including:

[0027] An acquisition module, used for acquiring the working mode of the streamer sterilization device;

[0028] A control module, used for controlling the working state of the bias voltage circuit based on the working mode;

[0029] Among them, the working mode includes a first working mode for generating positive ions and a second working mode for generating negative ions; in the first working mode, the square wave circuit is started and the bias voltage circuit is not started; in the second working mode, both the square wave circuit and the bias voltage circuit are started.

[0030] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: the streamer sterilization device described in the first aspect of the embodiment of the present application, the electronic device also comprising: a processor and a memory for storing a computer program that can be run on the processor, wherein the processor, when running the computer program, executes the steps of the method described in the second aspect of the embodiment of the present application.

[0031] In some embodiments, the electronic device is an air conditioner.

[0032] In a fifth aspect, an embodiment of the present application provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the first aspect of the embodiment of the present application are implemented.

[0033] The technical solution provided by the embodiment of the present application is that the streamer sterilization device includes: a power drive circuit for boosting and a dielectric barrier discharge generator for dielectric barrier discharge based on the driving power output by the power drive circuit; the power drive circuit includes: a square wave circuit for outputting a positive square wave signal and a bias voltage circuit for outputting a negative bias voltage signal; wherein the positive square wave signal output by the square wave circuit and the negative bias voltage signal output by the bias voltage circuit are superimposed and then supplied to the dielectric barrier discharge generator, so that the dielectric barrier discharge generator generates positive ions and / or negative ions. In this way, based on the combination of the bias voltage circuit and the square wave circuit, the dielectric barrier discharge generator can generate positive ions and / or negative ions on demand, and then sterilization can be performed based on positive ions and / or air purification can be performed based on the adsorption effect of negative ions, which can improve the working performance of the streamer sterilization device and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of the streamer sterilization device according to an embodiment of the present application;

[0035] Figure 2 This is a circuit diagram of the streamer sterilization device according to an embodiment of the present application;

[0036] Figure 3 A schematic diagram of a curve of a square wave pulse signal in an application example of the present application;

[0037] Figure 4 A schematic diagram of a curve of a negative square wave pulse signal in an application example of the present application;

[0038] Figure 5 A schematic diagram of curves of different driving power supplies under the adjustment of the duty cycle D of the pulse signal of the variable pulse circuit in an application example of the present application;

[0039] Figure 6 This is a circuit diagram of a streamer sterilization device in an application example of the present application;

[0040] Figure 7 This is a flow chart of a control method of a streamer sterilization device according to an embodiment of the present application;

[0041] Figure 8 This is a schematic diagram of the structure of the control device of the streamer sterilization device according to the embodiment of the present application;

[0042] Fig. 9 It is a schematic diagram of the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0045] The present application embodiment provides a streamer sterilization device, such as Figure 1 As shown, the streamer sterilization device includes: a power drive circuit for boosting voltage and a dielectric barrier discharge generator for performing dielectric barrier discharge based on the driving power output by the power drive circuit.

[0046] The power drive circuit can convert the low-voltage input power into a high-voltage square wave output, so that the dielectric barrier discharge generator performs dielectric barrier discharge under the drive of the high-voltage square wave. During the discharge process, the air will be ionized to generate free radicals and highly oxidizing molecules, thereby achieving sterilization, deodorization and other effects, and achieving the purpose of streamer sterilization.

[0047] It can be understood that the dielectric barrier discharge generator includes a positive electrode and a negative electrode arranged at intervals, and the air between the positive electrode and the negative electrode can be broken down under the action of the high voltage electricity output by the power drive circuit, so that the current flows from the positive electrode to the negative electrode to generate positive ions, or the current flows from the negative electrode to the positive electrode to generate negative ions.

[0048] In the related art, dielectric barrier discharge generators often generate single positive ions or negative ions, but the above single positive ions or negative ions are difficult to meet user needs; in addition, the above single positive ions or negative ions are easily accumulated on the conductor, thereby generating a strong discharge phenomenon, affecting the user experience.

[0049] Based on this, the embodiment of the present application provides a streamer sterilization device that supports the generation of positive ions and negative ions. Among them, the positive ions can kill the bacteria floating in the air based on the oxidation reaction; the negative ions can purify the air based on the adsorption effect, remove smoke and dust, and remove odors.

[0050] like Figure 2 As shown, the power driving circuit of the embodiment of the present application includes: a square wave circuit for outputting a positive square wave signal and a bias voltage circuit for outputting a negative bias voltage signal; wherein, the positive square wave signal output by the square wave circuit and the negative bias voltage signal output by the bias voltage circuit are superimposed and then powered to the dielectric barrier discharge generator, so that the dielectric barrier discharge generator generates positive ions and / or negative ions.

[0051] It can be understood that the embodiments of the present application can realize the dielectric barrier discharge generator to generate positive ions and / or negative ions on demand based on the combination of the bias voltage circuit and the square wave circuit, and then can perform sterilization based on the positive ions and / or air purification based on the adsorption effect of negative ions, which can improve the working performance of the streamer sterilization device and is low-cost.

[0052] Exemplarily, the square wave circuit includes: a self-excited oscillation circuit, a square wave generator, a resonant circuit and a first voltage doubling circuit; the self-excited oscillation circuit is used to generate an AC oscillation signal, the square wave generator is used to generate a square wave control signal, the resonant circuit includes a first transformer and a first switching circuit, the first switching circuit controls the primary winding of the first transformer to connect to the AC oscillation signal based on the square wave control signal, the secondary winding of the first transformer outputs a first voltage signal after boost conversion, and the first voltage signal is output as the positive square wave signal after voltage doubling and rectification by the first voltage doubling circuit.

[0053] Here, the self-excited oscillation circuit can be an LC oscillation circuit. L in the LC oscillation circuit represents inductance, C represents capacitance, and the time required for the self-excited oscillation circuit to complete a periodic change is called the period T, and the number of periodic changes completed in one second is called the frequency f, that is, f=1 / T. When electromagnetic oscillation occurs in the self-excited oscillation circuit, if there is no energy loss and it is not affected by other external factors, the period and frequency of the electromagnetic oscillation are called the natural frequency and natural period of the oscillation circuit. The natural period can be obtained using T=2π√LC. By way of example, the self-excited oscillation circuit can generate a sinusoidal wave signal.

[0054] Exemplarily, the resonant circuit including the first transformer and the first switch circuit can be a Royer topology circuit, which is also called a self-excited push-pull multivibrator, which uses the magnetic flux saturation of the switching transistor and the transformer core to perform self-excited oscillation, thereby realizing DC conversion based on the "on / off" conversion of the switch tube. It can be understood that the sine wave signal generated by the aforementioned self-excited oscillation circuit passes through the primary winding of the first transformer, and based on the conduction control of the first switch circuit, the secondary winding outputs the first voltage signal after the boost conversion, and the first voltage signal is processed by the first voltage doubling circuit for voltage doubler rectification, and then output as a square wave signal to the positive electrode of the dielectric barrier discharge generator.

[0055] Here, the first voltage doubler circuit can perform voltage doubler rectification processing on the first voltage signal. Exemplarily, assuming that the secondary winding of the first transformer outputs a voltage signal of V1, and the voltage boost factor of the first voltage doubler circuit is N1, the voltage signal output by the first voltage doubler circuit is N1*V1.

[0056] Here, the first voltage doubling circuit can be constructed based on a fast recovery diode and a capacitor, and the voltage is gradually increased by utilizing the unidirectional conductivity of the diode (the characteristic of the switch) and the energy storage characteristic of the capacitor, thereby generating double voltage, triple voltage, and multiple voltage rectifier circuits.

[0057] Exemplarily, the square wave generator may be a square wave generating circuit based on an operational amplifier, and the square wave generator may output a square wave signal with a duty cycle of n1 to drive the first switch circuit to be intermittently turned on.

[0058] Exemplarily, the bias voltage circuit includes: a variable pulse circuit, a second switching circuit, a second transformer and a second voltage doubling circuit; the second switching circuit controls the primary winding of the second transformer to connect to a low-voltage power supply based on a pulse signal output by the variable pulse circuit, and the secondary winding of the second transformer outputs a second voltage signal after a step-up conversion, and the second voltage signal is output as the negative bias voltage signal after voltage doubling and rectification by the second voltage doubling circuit.

[0059] It should be noted that the duty cycle of the pulse signal output by the variable pulse circuit can be adjusted, and the magnitude of the negative bias voltage signal changes with the change of the duty cycle of the pulse signal. For example, the amplitude of the negative bias voltage signal increases as the duty cycle of the pulse signal increases, and decreases as the duty cycle of the pulse signal decreases. In this way, the amplitude of the negative bias voltage signal can be adjusted.

[0060] Exemplarily, by adjusting the duty cycle D of the pulse signal of the variable pulse circuit, the output voltage of the secondary winding of the second transformer is V2, the boost multiple of the second voltage doubler circuit is N2, and the voltage signal output by the second voltage doubler circuit is N2*V2. Exemplarily, the negative electrode of the second voltage doubler circuit can be connected to the negative electrode of the first voltage doubler circuit, and the positive electrode of the second voltage doubler circuit can be connected to the negative electrode of the dielectric barrier discharge generator and connected to the ground terminal, thereby providing a negative bias voltage for the dielectric barrier discharge generator.

[0061] Exemplarily, the positive square wave signal output by the square wave circuit is a 5KV square wave pulse signal, and the voltage range of the negative bias voltage signal output by the bias voltage circuit is 0 to -10KV.

[0062] In an application example, when the square wave circuit is started and the bias voltage circuit is not started, the driving power supplied to the dielectric barrier discharge generator is a 5KV positive square wave pulse signal, such as Figure 3 As shown, at this time, the dielectric barrier discharge generator generates positive ions for sterilization based on positive ions.

[0063] In another application example, when the square wave circuit and the bias voltage circuit are both started and the voltage of the negative bias voltage signal output by the bias voltage circuit is -5KV, the driving power supplied to the dielectric barrier discharge generator is a negative square wave pulse signal of -5KV, such as Figure 4 As shown, at this time, the dielectric barrier discharge generator generates negative ions, which are used for air purification through the adsorption effect of negative ions.

[0064] In another application example, by adjusting the duty cycle D of the pulse signal of the variable pulse circuit, the voltage of the negative bias voltage signal output by the bias voltage circuit is adjustable. In this way, the driving power supply supplied to the dielectric barrier discharge generator can be a -5KV negative square wave pulse signal, a 5KV positive square wave pulse signal, or an alternating positive and negative square wave pulse signal, such as Figure 5 shown.

[0065] The streamer sterilization device of the embodiment of the present application is illustrated below with reference to an application example.

[0066] like Figure 6 As shown, in this application example, the capacitor C1 and the inductor L1 constitute a self-excited oscillation circuit, which outputs a sinusoidal wave signal to the primary winding of the first transformer primary side, the primary winding includes a first coil, a second coil and a third coil with mutual inductance with the first coil and the second coil, the first end of the first coil and the first end of the second coil are connected and connected to the sinusoidal wave signal, the second end of the first coil is grounded via the MOS tube Q1 in the first switch circuit, and the second end of the second coil is grounded via the MOS tube Q2 in the first switch circuit.

[0067] Reference Figure 6 A capacitor C2 is arranged between the second end of the first coil and the second end of the second coil, the second end of the first coil is connected to the drain of the MOS tube Q1, the second end of the second coil is connected to the drain of the MOS tube Q2, and the source of the MOS tube Q1 and the source of the MOS tube Q2 are connected to the ground terminal GND.

[0068] The square wave generator is a self-excited oscillation circuit based on an operational amplifier, which outputs a square wave signal AMP-V with a duty cycle of n1. The square wave signal AMP-V is divided into two paths, one of which is connected to the gate of the MOS tube Q2 through a resistor R2, and the other is connected to the gate of the MOS tube Q1 through a resistor R3. A resistor R4 is set between the gate and source of the MOS tube Q1, and a resistor R5 is set between the gate and source of the MOS tube Q2. The two ends of the third coil are respectively connected to the gate of the MOS tube Q1 and the gate of the MOS tube Q2, and a branch including a resistor R1 and a capacitor C3 is also set between the two ends of the third coil. It can be understood that under the drive of the square wave signal AMP-V, the MOS tube Q1 and the MOS tube Q2 are alternately turned on, so that the first coil and the second coil are alternately turned on, and the secondary winding on the secondary side outputs a voltage signal of V1, and then the voltage signal output by the first voltage doubling circuit is N*V1. In this application example, N=3. The voltage signal output by the first voltage doubling circuit is applied to the positive electrode of the dielectric barrier discharge generator.

[0069] Reference Figure 6 The bias voltage circuit includes: a second transformer, a MOS tube Q4 (corresponding to a second switch circuit) and a second voltage doubling circuit. The primary winding of the second transformer is connected to a low-voltage DC power supply, and the primary winding is grounded via the MOS tube Q4. A bypass branch is connected between the two ends of the primary winding. The bypass branch includes: a diode D7, a resistor R12 and a capacitor C6. The cathode of the diode D7 is connected to the first end of the primary winding, the anode of the diode D7 is connected to the first end of the resistor R12, the second end of the resistor R12 is connected to the second end of the primary winding, and the capacitor C6 is connected in parallel between the first end and the second end of the resistor R12.

[0070] The drain of the MOS tube Q4 is connected to the second end of the primary winding of the second transformer, the source of the MOS tube Q4 is connected to the ground terminal GND, and the gate of the MOS tube Q4 is connected to the variable pulse signal PWM through the resistor R17. Based on the adjustment of the duty cycle of the variable pulse signal PWM, a voltage signal V2 is output at the secondary winding of the second transformer, and the voltage signal output by the second voltage doubling circuit is N*V2. The positive electrode of the second voltage doubling circuit is connected to the negative electrode of the dielectric barrier discharge generator and is connected to the reference ground Earth, and the negative electrode of the second voltage doubling circuit is connected to the negative electrode of the first voltage doubling circuit.

[0071] It can be understood that the streamer sterilization device of this application example, based on the adjustment of the duty cycle D of the variable pulse signal PWM, can realize the power drive circuit to output a positive square wave pulse signal, a negative square wave pulse signal or an alternating positive and negative square wave pulse signal as a driving power supply, thereby driving the dielectric barrier discharge generator to produce positive ions, negative ions or alternately produce positive ions and negative ions, and can generate positive ions and / or negative ions as needed, and then can perform sterilization based on positive ions and / or air purification based on the adsorption effect of negative ions, which can improve the working performance of the streamer sterilization device and is low cost.

[0072] The present application also provides a control method for the streamer sterilization device described in the above embodiment. Figure 7 As shown, the method includes:

[0073] Step 701, obtaining the working mode of the streamer sterilization device.

[0074] Step 702, based on the working mode, control the working state of the bias voltage circuit; wherein the working mode includes a first working mode for generating positive ions and a second working mode for generating negative ions; in the first working mode, the square wave circuit is started and the bias voltage circuit is not started; in the second working mode, both the square wave circuit and the bias voltage circuit are started.

[0075] It should be noted that the first working mode can be understood as a working mode for sterilization based on positive ions of DBD, and the second working mode can be understood as a working mode for air purification based on negative ions of DBD.

[0076] Exemplarily, input units such as buttons for switching working modes and touch screens can be set on the light sterilization device. The controller of the light sterilization device determines the current working mode based on the instructions input by the input unit, or the controller of the light sterilization device can receive mode switching instructions sent wirelessly by the user based on a remote control or a handheld terminal, and determine the current working mode based on the mode switching instructions. The embodiments of the present application are not limited to this.

[0077] Exemplarily, if the controller determines that the current working mode is the first working mode, the square wave circuit is controlled to start and the bias voltage circuit is not started. At this time, the power drive circuit outputs a positive square wave pulse signal, for example, Figure 3 The dielectric barrier discharge generator generates positive ions under the drive of the positive square wave pulse signal.

[0078] Exemplarily, if the controller determines that the current working mode is the second working mode, the square wave circuit and the bias voltage circuit are both started. At this time, the power drive circuit outputs a negative square wave pulse signal, for example, Figure 4The negative square wave pulse signal shown, the dielectric barrier discharge generator generates negative ions under the drive of the negative square wave pulse signal.

[0079] Exemplarily, the bias voltage circuit includes a variable pulse circuit, and the pulse signal output by the variable pulse circuit is used to adjust the magnitude of the negative bias voltage signal output by the bias voltage circuit. If the working mode is the second working mode, the working state of the bias voltage circuit is controlled, including:

[0080] The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made equal to the amplitude of the positive square wave signal output by the square wave circuit.

[0081] It can be understood that since the amplitude of the negative bias voltage signal is equal to the amplitude of the positive square wave signal, for a positive square wave pulse signal with a duty cycle of d, under the superposition of the negative bias voltage signal, the driving power supply is a negative square wave pulse signal with a duty cycle of 1-d.

[0082] Exemplarily, the working mode further includes: a third working mode for alternately generating positive ions and negative ions. If the working mode is the third working mode, the controlling the working state of the bias voltage circuit includes:

[0083] The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made smaller than the amplitude of the positive square wave signal output by the square wave circuit.

[0084] For example, assuming that the amplitude of the positive square wave pulse signal output by the square wave circuit is 5KV, based on the adjustment of the duty cycle D of the pulse signal, the amplitude of the negative bias voltage signal is -2.5KV, then the driving power supply is a square wave pulse signal alternating between 2.5KV and -2.5KV, so that the dielectric barrier discharge generator alternately generates positive ions and negative ions, thereby taking into account the needs of sterilization and air purification.

[0085] It should be noted that, since the dielectric barrier discharge generator only generates single positive ions or negative ions when operating in the first working mode or the second working mode, the single positive ions or negative ions are easily accumulated on the conductor, thereby generating a strong discharge phenomenon and affecting the user experience.

[0086] Based on this, in some embodiments, the control method further includes:

[0087] If it is determined that the streamer sterilization device has been running in the first working mode for a first set time, the streamer sterilization device is controlled to switch from the first working mode to the second mode for a second set time and then return to the first working mode, and so on;

[0088] Alternatively, if it is determined that the streamer sterilization device has been running in the second working mode for a third set time, the streamer sterilization device is controlled to switch from the second working mode to the first mode for a fourth set time and then return to the second working mode, and so on.

[0089] Exemplarily, the second set time is less than the first set time, that is, when the streamer sterilization device is working in the first working mode, it can switch to the second working mode and run for the second set time at intervals of the first set time, and then return to the first working mode to operate. In this way, the negative ions generated in the second working mode can be used to neutralize the accumulated positive ions, which can effectively eliminate the defect of static electricity accumulation.

[0090] Exemplarily, the fourth set time is less than the third set time, that is, when the streamer sterilization device is working in the second working mode, it can switch to the first working mode and run for the fourth set time every third set time, and then return to the second working mode. In this way, the positive ions generated in the first working mode can be used to neutralize the accumulated negative ions, which can effectively eliminate the defect of static electricity accumulation.

[0091] Exemplarily, the streamer sterilization device further includes: a fan for adjusting the flow rate of the airflow flowing through the dielectric barrier discharge generator, and the control method further includes:

[0092] Based on the rotation speed of the fan, the duty cycle of the pulse signal is adjusted.

[0093] It can be understood that the controller of the streamer sterilization device can obtain the speed of the fan, and adjust the duty cycle D of the pulse signal based on the speed of the fan, and then adjust the size of the negative bias voltage signal to achieve the rate adjustment of the positive ions and / or negative ions generated by the dielectric barrier discharge generator to meet the adjustment requirements of matching the generation rate of positive ions and / or negative ions with the wind speed.

[0094] In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a control device of the streamer sterilization device, which corresponds to the control method of the above-mentioned streamer sterilization device, and each step in the embodiment of the control method of the above-mentioned streamer sterilization device is also fully applicable to the control device embodiment of the present streamer sterilization device.

[0095] like Figure 8As shown, the control device of the streamer sterilization device includes: an acquisition module 801 and a control module 802. The acquisition module 801 is used to acquire the working mode of the streamer sterilization device; the control module 802 is used to control the working state of the bias voltage circuit based on the working mode; wherein the working mode includes a first working mode for generating positive ions and a second working mode for generating negative ions; in the first working mode, the square wave circuit is started and the bias voltage circuit is not started; in the second working mode, both the square wave circuit and the bias voltage circuit are started.

[0096] In some embodiments, the bias voltage circuit includes a variable pulse circuit, and the pulse signal output by the variable pulse circuit is used to adjust the magnitude of the negative bias voltage signal output by the bias voltage circuit. If the working mode is the second working mode, the control module 802 controls the working state of the bias voltage circuit, including:

[0097] The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made equal to the amplitude of the positive square wave signal output by the square wave circuit.

[0098] In some embodiments, the working mode further includes: a third working mode for alternately generating positive ions and negative ions. If the working mode is the third working mode, the control module 802 controls the working state of the bias voltage circuit, including:

[0099] The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made smaller than the amplitude of the positive square wave signal output by the square wave circuit.

[0100] In some embodiments, the control module 802 is further configured to:

[0101] If it is determined that the streamer sterilization device has been running in the first working mode for a first set time, the streamer sterilization device is controlled to switch from the first working mode to the second mode for a second set time and then return to the first working mode, and so on;

[0102] Alternatively, if it is determined that the streamer sterilization device has been running in the second working mode for a third set time, the streamer sterilization device is controlled to switch from the second working mode to the first mode for a fourth set time and then return to the second working mode, and so on.

[0103] In some embodiments, the streamer sterilization device further includes: a fan for adjusting the flow rate of the airflow flowing through the dielectric barrier discharge generator, and the control module 802 is further used to:

[0104] Based on the rotation speed of the fan, the duty cycle of the pulse signal is adjusted.

[0105] In actual application, the acquisition module 801 and the control module 802 can be implemented by a processor of the streamer sterilization device. Of course, the processor needs to run the computer program in the memory to realize its function.

[0106] It should be noted that: the control device of the streamer sterilization device provided in the above embodiment only uses the division of the above program modules as an example when performing streamer sterilization control. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the control device of the streamer sterilization device provided in the above embodiment and the control method embodiment of the streamer sterilization device belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0107] Based on the hardware implementation of the above program module and in order to implement the method of the embodiment of the present application, the embodiment of the present application further provides an electronic device. The electronic device includes the aforementioned streamer sterilization device of the embodiment of the present application. Fig. 9 Only an exemplary structure of the electronic device is shown, not all structures, and can be implemented as needed. Fig. 9 Partial or complete structure shown.

[0108] like Fig. 9 As shown, the electronic device 900 provided in the embodiment of the present application includes: at least one processor 901, a memory 902 and a user interface 903. The various components in the electronic device 900 are coupled together through a bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, in Fig. 9 Various buses are labeled as bus system 904.

[0109] The user interface 903 may include a display, a keyboard, a mouse, a trackball, a click wheel, keys, buttons, a touch pad or a touch screen.

[0110] The memory 902 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device. Examples of such data include: any computer program used to operate on the electronic device.

[0111] The control method disclosed in the embodiment of the present application can be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the control method of the electronic device can be completed by the hardware integrated logic circuit or software instructions in the processor 901. The above-mentioned processor 901 can be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 901 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 902, and the processor 901 reads the information in the memory 902, and completes the steps of the control method of the electronic device provided in the embodiment of the present application in combination with its hardware.

[0112] In an exemplary embodiment, the electronic device may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0113] It can be understood that the memory 902 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0114] Exemplarily, the electronic device may be an air conditioner. The air conditioner is used to adjust the temperature, humidity, etc. of the environment. The air conditioner may be a cooling-only air conditioner or a cooling-heating dual-purpose air conditioner. The air conditioner may be a wall-mounted air conditioner, a cabinet-type air conditioner, a window-type air conditioner, or a ceiling-mounted air conditioner, etc., which is not specifically limited in the embodiments of the present application.

[0115] Exemplarily, the streamer sterilization device can be arranged in the air duct of the air conditioner, and can utilize the free radicals and highly oxidizing molecules generated by dielectric barrier discharge to eliminate bacteria in the air duct and indoor environment, thereby purifying the air well.

[0116] It can be understood that the air conditioner controls the working state of the bias voltage circuit of the streamer sterilization device so that the dielectric barrier discharge generator can generate positive ions and negative ions as needed, and then can perform sterilization based on the positive ions and / or air purification based on the adsorption effect of negative ions; in addition, based on the alternating generation of positive ions and negative ions, it can also effectively solve the problem of static electricity accumulation during the application of the streamer sterilization device.

[0117] It can be understood that the wind speed of the air duct of the air conditioner can be adjusted based on the speed of the fan, and the air conditioner can adjust the duty cycle of the variable pulse signal based on the speed of the fan, and then adjust the size of the negative bias voltage signal to meet the adjustment requirements of matching the generation rate of positive ions and / or negative ions with the wind speed.

[0118] It is understandable that, in other embodiments, the electronic device may also be an electronic device with air purification function such as a fresh air blower.

[0119] In an exemplary embodiment, the present application also provides a storage medium, namely a computer storage medium, which may be a computer-readable storage medium, for example, a memory 902 storing a computer program, and the computer program may be executed by a processor 901 of an electronic device to complete the steps described in the method of the present application. The computer-readable storage medium may be a memory such as a ROM, a PROM, an EPROM, an EEPROM, a Flash Memory, a magnetic surface memory, an optical disk, or a CD-ROM.

[0120] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0121] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0122] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A streamer sterilization device, characterized in that: include: A power drive circuit for boosting voltage and a dielectric barrier discharge generator for performing dielectric barrier discharge based on the driving power output by the power drive circuit; The power drive circuit includes: a square wave circuit for outputting a positive square wave signal and a bias voltage circuit for outputting a negative bias voltage signal; The positive square wave signal output by the square wave circuit is superimposed with the negative bias voltage signal output by the bias voltage circuit and then supplies power to the dielectric barrier discharge generator, so that the dielectric barrier discharge generator generates positive ions and / or negative ions.

2. The streamer sterilization device according to claim 1, characterized in that: The square wave circuit comprises: a self-excited oscillation circuit, a square wave generator, a resonant circuit and a first voltage doubling circuit; The self-excited oscillation circuit is used to generate an AC oscillation signal, the square wave generator is used to generate a square wave control signal, the resonant circuit includes a first transformer and a first switching circuit, the first switching circuit controls the primary winding of the first transformer to connect to the AC oscillation signal based on the square wave control signal, the secondary winding of the first transformer outputs a first voltage signal after boost conversion, and the first voltage signal is output as the positive square wave signal after voltage doubling and rectification by the first voltage doubling circuit.

3. The streamer sterilization device according to claim 1, characterized in that: The bias voltage circuit includes: a variable pulse circuit, a second switching circuit, a second transformer and a second voltage doubling circuit; the second switching circuit controls the primary winding of the second transformer to connect to a low-voltage power supply based on the pulse signal output by the variable pulse circuit, and the secondary winding of the second transformer outputs a second voltage signal after boost conversion, and the second voltage signal is output as the negative bias voltage signal after voltage doubling and rectification by the second voltage doubling circuit.

4. The streamer sterilization device according to claim 3, characterized in that: The magnitude of the negative bias voltage signal changes with the change of the duty cycle of the pulse signal.

5. A control method for the streamer sterilization device according to any one of claims 1 to 4, characterized in that: include: Obtaining the working mode of the streamer sterilization device; Based on the working mode, controlling the working state of the bias voltage circuit; Among them, the working modes include a first working mode for generating positive ions and a second working mode for generating negative ions; in the first working mode, the square wave circuit is started and the bias voltage circuit is not started; in the second working mode, both the square wave circuit and the bias voltage circuit are started.

6. The method according to claim 5, characterized in that The bias voltage circuit includes a variable pulse circuit, and the pulse signal output by the variable pulse circuit is used to adjust the magnitude of the negative bias voltage signal output by the bias voltage circuit. If the working mode is the second working mode, the working state of the bias voltage circuit is controlled, including: The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made equal to the amplitude of the positive square wave signal output by the square wave circuit.

7. The method according to claim 6, characterized in that The working mode also includes: a third working mode for alternately generating positive ions and negative ions. If the working mode is the third working mode, the working state of the bias voltage circuit is controlled, including: The square wave circuit and the bias voltage circuit are both controlled to start, and based on the adjustment of the duty cycle of the pulse signal, the amplitude of the negative bias voltage signal is made smaller than the amplitude of the positive square wave signal output by the square wave circuit.

8. The method according to claim 5, characterized in that The method further comprises: If it is determined that the streamer sterilization device has been running in the first working mode for a first set time, the streamer sterilization device is controlled to switch from the first working mode to the second mode for a second set time and then return to the first working mode, and so on; Alternatively, if it is determined that the streamer sterilization device has been running in the second working mode for a third set time, the streamer sterilization device is controlled to switch from the second working mode to the first mode for a fourth set time and then return to the second working mode, and so on.

9. The method according to claim 6, characterized in that The streamer sterilization device further comprises: a fan for adjusting the flow rate of the airflow passing through the dielectric barrier discharge generator, and the method further comprises: Based on the rotation speed of the fan, the duty cycle of the pulse signal is adjusted.

10. A control device for a streamer sterilization device as claimed in any one of claims 1 to 4, characterized in that: include: An acquisition module, used for acquiring the working mode of the streamer sterilization device; A control module, used for controlling the working state of the bias voltage circuit based on the working mode; Among them, the working modes include a first working mode for generating positive ions and a second working mode for generating negative ions; in the first working mode, the square wave circuit is started and the bias voltage circuit is not started; in the second working mode, both the square wave circuit and the bias voltage circuit are started.

11. An electronic device, characterized in that: include: The streamer sterilization device according to any one of claims 1 to 4, wherein the electronic device further comprises: a processor and a memory for storing a computer program that can be run on the processor, wherein: The processor is used to execute the steps of the method according to any one of claims 5 to 9 when running a computer program.

12. The electronic device according to claim 11, characterized in that: The electronic device is an air conditioner.

13. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 9 are implemented.

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