High-voltage orthogonal rotating electric field implementation device

Abstract

The invention relates to the technical field of high-voltage electrostatic adsorption, in particular to a high-voltage orthogonal rotating electric field implementation device which comprises a control unit, an electrode plate set and a high-voltage electrostatic generation unit set. The electrode plate group comprises a plurality of electrode plates which are arranged at preset positions of the pipeline in a surrounding manner; the control unit generates a PWM waveform corresponding to each electrode plate according to a preset rotation mode, and inputs the PWM waveforms to the corresponding high-voltage static electricity generation units; the high-voltage static electricity generation unit generates driving voltage according to a preset high voltage value and the PWM waveform and supplies the driving voltage to the corresponding electrode plates; and each electrode slice in the electrode slice group forms a high-voltage orthogonal rotating electric field according to the corresponding driving voltage. It can be understood that according to the technical scheme, complex waterway arrangement is not needed, liquid flowing out of the pipeline rotates under the action of the rotating electric field, and the service life is long.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage electrostatic adsorption, and in particular to a device for realizing a high-voltage orthogonal rotating electric field. Background Art

[0002] At present, the common method for achieving different radius rotation of general liquids, such as water, is to use a two-dimensional motor rotating mechanism. The essential technology of the two-dimensional motor rotating mechanism is that the motor drives the mechanical structure based on the principle of rotating magnetic field, one motor is responsible for rotating at a certain speed, and the other motor assists in controlling the size of the rotating radius. However, this method of using a two-dimensional mechanical rotating mechanism has a high complexity of the waterway, a short life of the rotating transmission mechanism, and it is not easy to maintain the hygiene of the waterway. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a high-voltage orthogonal rotating electric field implementation device to solve the problem that there are many defects in the existing method of realizing the rotation of liquids at different radii.

[0004] According to a first aspect of an embodiment of the present invention, there is provided a device for realizing a high-voltage orthogonal rotating electric field, comprising:

[0005] A control unit, an electrode sheet group and a high-voltage static electricity generating unit group;

[0006] The electrode sheet group includes a plurality of electrode sheets, and the plurality of electrode sheets are arranged around preset positions of the pipeline; each electrode sheet is connected to a corresponding high-voltage electrostatic generating unit, and the high-voltage electrostatic generating units are connected to the control unit;

[0007] The control unit generates a PWM waveform corresponding to each electrode sheet according to a preset rotation mode, and inputs the PWM waveform into the corresponding high-voltage static electricity generating unit;

[0008] The high-voltage static electricity generating unit obtains a preset high voltage value and the PWM waveform, and generates a driving voltage to the corresponding electrode sheet according to the preset high voltage value and the PWM waveform;

[0009] Each electrode sheet in the electrode sheet group forms a high-voltage orthogonal rotating electric field according to a corresponding driving voltage.

[0010] Preferably, in the high-voltage orthogonal rotating electric field implementation device, the high-voltage electrostatic generating unit includes a PID hardware loop, the driving voltage is used as the first input of the PID hardware loop, the PWM waveform is used as the second input of the PID hardware loop, and the output value of the PID hardware loop is used to control the amplitude of the preset high voltage value to generate the driving voltage.

[0011] Preferably, in the high-voltage orthogonal rotating electric field realization device, the high-voltage static electricity generating unit further includes a voltage sampling port for collecting the driving voltage and sending the driving voltage to the control unit;

[0012] The control unit uses a PID algorithm to close the loop and adjust the duty cycle of the corresponding PWM waveform output.

[0013] Preferably, in the high-voltage orthogonal rotating electric field implementation device, the high-voltage electrostatic generating unit also includes a power control switch; the control end of the power control switch is connected to the control unit; the power control switch is used to control the input of a preset high voltage value according to a switch signal given by the control end.

[0014] Preferably, the high-voltage orthogonal rotating electric field realization device further includes:

[0015] an indicator light group connected to the control unit;

[0016] The indicator lights in the indicator light group correspond to the electrode sheets in the electrode sheet group. When the control unit sends a switch signal to control the high-voltage electrostatic generating unit corresponding to the electrode sheet to receive a preset high voltage value, the control unit sends a control signal to control the corresponding indicator light to turn on.

[0017] Preferably, in the high-voltage orthogonal rotating electric field realization device, the high-voltage electrostatic generating unit further includes a Fun1 driving circuit, a piezoelectric ceramic transformer and a first transistor, wherein the base of the first transistor is connected to the control unit, the collector of the first transistor is used as a voltage input terminal to obtain a preset high voltage value, and the emitter of the first transistor is connected to the Fun1 driving circuit; the Fun1 driving circuit is connected to the piezoelectric ceramic transformer and is also connected to the output terminal of the PID hardware loop; the piezoelectric ceramic transformer is connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is grounded through the capacitor C2, the negative electrode of the diode D1 is also connected to the corresponding electrode sheet, the negative electrode of the diode D1 is also connected to the first input terminal of the PID hardware loop through the resistor R1, the negative electrode of the diode D1 is also grounded through the resistors R1 and R2, and the negative electrode of the diode D1 is also connected to the control unit through the resistors R1 and R3; the second input terminal of the PID hardware loop is grounded through the capacitor C3, and is also connected to the control unit through the resistor R4 to receive the PWM waveform.

[0018] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0019] It is understandable that a high-voltage orthogonal rotating electric field realization device shown in the present invention includes a control unit, an electrode sheet group and a high-voltage electrostatic generating unit group; the electrode sheet group includes a plurality of electrode sheets, which are arranged around the preset position of the pipeline; the control unit generates a PWM waveform corresponding to each electrode sheet according to the preset rotation mode, and inputs the PWM waveform into the corresponding high-voltage electrostatic generating unit; the high-voltage electrostatic generating unit generates a driving voltage to the corresponding electrode sheet according to the preset high voltage value and the PWM waveform; each electrode sheet in the electrode sheet group forms a high-voltage orthogonal rotating electric field according to the corresponding driving voltage. It is understandable that the technical solution shown in the present invention can apply orthogonal vector high voltages to the electrodes respectively within a certain period to form a high-voltage orthogonal electrostatic field, so that the liquid flowing out of the pipeline rotates under the action of the rotating electric field; the rotation radius can be changed according to the adjustment of the peak voltage, and the rotation modes such as drawing circles and spirals can be realized by the rotation radius and rotation speed algorithm, without the need for complex waterway settings, and with a long service life.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 is a schematic block diagram of a device for realizing a high-voltage orthogonal rotating electric field according to an exemplary embodiment;

[0023] Figure 2 is a schematic diagram of a high-voltage static electricity generating unit circuit according to an exemplary embodiment;

[0024] Figure 3 is a schematic diagram of an MCU and its peripheral circuits according to an exemplary embodiment;

[0025] Figure 4 is a schematic diagram of a high voltage sinusoidal electrostatic field driving waveform according to an exemplary embodiment;

[0026] Figure 5 is a schematic diagram of PWM waveform outputting sine and cosine waves according to an exemplary embodiment;

[0027] Figure 6 is a schematic diagram showing the synthesis of rotation direction and force according to an exemplary embodiment;

[0028] Figure 7 is a flowchart of a rotating electric field software according to an exemplary embodiment;

[0029] Figure 8 is a schematic diagram of software and hardware dual PID according to an exemplary embodiment;

[0030] Fig. 9 is a schematic diagram showing a spiral rotation implementation according to an exemplary embodiment;

[0031] Fig.10 The figure is a schematic diagram of a circle drawing optimization waveform according to an exemplary embodiment. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0033] In one embodiment, Figure 1 is a schematic block diagram of a high voltage orthogonal rotating electric field implementation device according to an exemplary embodiment. Figure 1 In the example, the electrode sheet group includes four electrode sheets, namely electrode sheet A, electrode sheet B, electrode sheet C and electrode sheet D. The four electrode sheets are arranged at preset positions of the pipeline, and the four electrodes correspond to four high-voltage static electricity generating units. Figure 1 , a high voltage orthogonal rotating electric field realization device is provided, comprising:

[0034] Control unit, electrode sheet group and high voltage static electricity generating unit group.

[0035] The electrode sheet group includes a plurality of electrode sheets, and the plurality of electrode sheets are arranged around preset positions of the pipeline; each electrode sheet is connected to a corresponding high-voltage electrostatic generating unit, and the high-voltage electrostatic generating units are connected to the control unit.

[0036] The control unit generates a PWM waveform corresponding to each electrode sheet according to a preset rotation mode, and inputs the PWM waveform into the corresponding high-voltage static electricity generating unit. Here, the PWM waveform is mainly used to fit a half-cycle sine wave, and a DAC or analog circuit can be used to replace this PWM output waveform.

[0037] The high-voltage static electricity generating unit obtains a preset high voltage value and the PWM waveform, and generates a driving voltage to the corresponding electrode sheet according to the preset high voltage value and the PWM waveform.

[0038] Each electrode sheet in the electrode sheet group forms a high-voltage orthogonal rotating electric field according to a corresponding driving voltage.

[0039] It can be understood that the technical solution shown in the present invention can apply orthogonal vector high voltages to the electrodes respectively within a certain period to form a high-voltage orthogonal electrostatic field, so that the liquid flowing out of the pipeline rotates under the action of the rotating electric field; the rotation radius can be changed according to the adjustment of the peak voltage, and the rotation modes such as drawing circles and spirals can be realized through the rotation radius and rotation speed algorithm, without the need for complicated water channel settings, and with a long service life.

[0040] Typical applications of this technical solution include coffee machines, tea makers, etc., which cause the water in the water pipe to rotate under the action of the electrostatic field force. Compared with the mechanical rotating mechanism, this technical solution has a simple and hygienic water path and improves the visual effect.

[0041] Regarding the methods of generating high voltage, one is transformer boosting: using the principle of Lenz's law of electromagnetic induction, the voltage is increased by the transformer coil ratio to generate high voltage electricity; the other is the capacitor voltage doubling circuit: using the rectifying and guiding function of the diode and the energy storage characteristics of the capacitor, through the charging and discharging process of the capacitor, the lower AC voltage is "rectified" into a higher DC voltage. In addition, there is a piezoelectric ceramic transformer (Piezo Transformer-PZT): a new type of electronic transformer made of ferroelectric ceramic materials through sintering and high-voltage polarization processes, using the inverse piezoelectric effect and positive piezoelectric effect of piezoelectric materials to complete the conversion between mechanical energy and electrical energy and achieve high voltage output.

[0042] The three high-voltage circuits are compared as follows: Transformer boost is a traditional boost method, which is large in size and requires changing the input AC voltage to obtain an alternating output high voltage, for example: the maximum voltage of 10kV is generated, which is a huge challenge for the transformer insulation strength with application requirements for cost and volume. Capacitor voltage doubling depends on an alternating voltage source, and its output voltage is in a fixed proportional relationship with the voltage doubling circuit, which makes it difficult to achieve the requirement of linear stepless voltage regulation in this embodiment. The piezoelectric ceramic transformer is thin and light, and the voltage can be adjusted steplessly, making it easy to achieve linearly adjustable DC positive and negative high voltages, so this embodiment uses a piezoelectric ceramic transformer to generate high voltage.

[0043] The high-voltage electrostatic generating unit shown in this embodiment can control the electrode sheet to generate a high-voltage orthogonal rotating electric field. One high-voltage electrostatic generating unit is selected for illustration. Figure 2 is a schematic diagram of a high voltage static electricity generating unit circuit according to an exemplary embodiment. Figure 2In the high-voltage orthogonal rotating electric field realization device, the high-voltage static electricity generating unit includes a Fun1 driving circuit, a piezoelectric ceramic transformer, a PID hardware loop and a first transistor, wherein the base of the first transistor is connected to the Ctrl_OUT port and connected to the control unit, the collector of the first transistor is used as a voltage input terminal VCC to obtain a preset high voltage value, and the emitter of the first transistor is connected to the Fun1 driving circuit; the Fun1 driving circuit is connected to the piezoelectric ceramic transformer and also to the output end of the PID hardware loop; the piezoelectric ceramic transformer is connected to the positive terminal of the diode D1 The cathode of the diode D1 is connected to the HIOUT port and connected to the corresponding electrode sheet, the cathode of the diode D1 is also connected to the first input end of the PID hardware loop through a resistor R1, the cathode of the diode D1 is also grounded through resistors R1 and R2, the cathode of the diode D1 is also connected to the HV_Check port and connected to the control unit through resistors R1 and R3; the second input end of the PID hardware loop is grounded through capacitor C3, and is also connected to the PWM port through resistor R4 and connected to the control unit to receive a PWM waveform.

[0044] In specific practice, Figure 2 In the high-voltage static electricity generating unit, VCC is the input voltage to power the high-voltage static electricity generating circuit, which is used to input a preset high voltage value, and the first transistor Q1 is a power control switch.

[0045] It should be noted that in the high-voltage orthogonal rotating electric field implementation device, the control end of the power control switch in the high-voltage electrostatic generating unit is connected to the control unit; the power control switch is used to control the input of a preset high voltage value according to the switching signal given by the control end.

[0046] It can be seen that, through the power control switch, the control unit can control the voltage input of the high-voltage static electricity generating unit by logic level, ensuring low power consumption of the control unit circuit and no crosstalk between electrodes.

[0047] It should be noted that in the high-voltage orthogonal rotating electric field realization device, the PID hardware loop in the high-voltage electrostatic generation unit uses the driving voltage as the first input of the PID hardware loop, and the PWM waveform as the second input of the PID hardware loop, and uses the output value of the PID hardware loop to control the amplitude of the preset high voltage value to generate the driving voltage. It can be understood that the high-voltage AC waveform generated by the PZT (piezoelectric ceramic transformer) combined with the Fun1 drive circuit obtains a positive polarity high DC voltage after passing through the diode D1 and the capacitor C2. The voltage is divided by the resistor R1 and the resistor R2 and is given to the comparator PID hardware loop, which is compared with the sine wave after the integral filter, so as to control the Fun1 drive circuit to control the PZT output voltage amplitude, thereby realizing a hardware PID adjustment process.

[0048] It should be noted that the voltage sampling port HV_Check in the high-voltage orthogonal rotating electric field implementation device is used to collect the driving voltage and send the driving voltage to the control unit; the control unit uses the PID algorithm to close the loop to adjust the duty cycle of the corresponding PWM waveform output.

[0049] It can be understood that HV_Check is a high-voltage output that is divided by the high-voltage resistors R1 and R2, filtered by a filter circuit composed of resistor R3 and capacitor C1, and then sent to the MCU ADC for sampling to obtain the actual output high-voltage value. The PID algorithm is then used to close the loop to adjust the duty cycle of the MCU PWM output to ensure that the output high voltage is the steady-state target voltage.

[0050] Figure 3 is a schematic diagram of an MCU and its peripheral circuits according to an exemplary embodiment. Figure 3 Taking electrode sheet A as an example, the connection method between the MCU and the high-voltage static electricity generating unit circuit is shown. The MCU is connected to the HV_Check pin of the high-voltage static electricity generating unit circuit through the sampling pin AN3 for ADC sampling.

[0051] The control unit generates a PWM waveform corresponding to each electrode sheet according to the preset rotation mode, such as Figure 5 As shown, the PWM waveform generated by the MCU is defined according to the time of the rotation period T, and finally forms the following Figure 4 The high voltage sinusoidal electrostatic field driving waveform is shown.

[0052] The MCU controls the liquid to rotate at an angle of Y° each time. Take the 4-electrode layout as an example: the power-on period of each electrode is (T1 / 2), corresponding to 180°. In the program example, 90 sets of data are taken for each rotation of 1° for sine sin_dat

[90] and cosine cos_dat

[90] . The PWM duty cycle setting of the MCU is output as cos(Y)Y[0,90] over time T. The pulsating waveform is low-pass filtered by R4 and C3 to obtain the effective cosine analog value VA=3.3*cos(Y)Y[0,90], where 3.3 is the MCU output PWM amplitude voltage.

[0053] The front and rear waveforms of the eight electrodes differ by 45°, and the spatial and electrical angles differ by 45°. Other electrodes are set according to specific circumstances, and the method is similar.

[0054] Figure 6 is a schematic diagram showing the synthesis of rotation direction and force according to an exemplary embodiment. Figure 6 As shown, a sine-cosine function driving voltage is applied to the four electrode sheets in turn, such as A, B, C, D, A closed loop (forward rotation), and the control angle is Y° each time, so N data arrays are formed: N=360 / Y.

[0055] See also Figure 7 , A and B electrode power switches are enabled, according to A electrode voltage VA=3.3*cos(Y)Y[0,90], B electrode voltage VB=3.3*sin(Y)Y[0,90]; B and C electrodes are enabled, according to B electrode voltage VB=3.3*sin(Y),Y[90,180], C electrode voltage VC=3.3*cos(Y)Y[90,180]; C, D and D, A are in the same order. According to the above cycle, the liquid in the column can rotate in a circle.

[0056] In addition, the rotation direction can also be A, D, C, B, A closed loop (reverse).

[0057] It can be understood that the technical solution shown in the present invention can realize dual PID implementation of software and hardware. In terms of software, it is implemented through the PID algorithm in the MCU to ensure that the output high voltage is a steady-state target voltage. In terms of hardware, it is implemented through the PID hardware loop in the high-voltage electrostatic generating unit.

[0058] At the same time, the technical solution of this embodiment can realize spiral rotation and circle drawing. The waveform of spiral rotation can refer to Fig. 9 ,exist Fig. 9 In the figure, four electrode sheets are taken as an example, and the waveforms of the four electrode sheets are shown from left to right.

[0059] If the voltage needs to be increased at a certain angle or at a certain point or several points according to the shape of the circle, each value of the N array is multiplied by the corresponding coefficient. For example, assuming that there are ten numbers, after normalizing the unit circle, the theoretical radius is 1, that is, the sine and cosine values ​​change between 0 and 1. A compensation coefficient can be given to make it between 0 and 1. Some points have high or low values ​​to achieve the rules of the circle. See the optimized waveform for drawing a circle. Fig.10 .

[0060] It should be noted that the high-voltage orthogonal rotating electric field implementation device also includes: an indicator light group connected to the control unit; the indicator lights in the indicator light group correspond to the electrode sheets in the electrode sheet group, and when the control unit sends a switch signal to control the high-voltage electrostatic generating unit corresponding to the electrode sheet to receive a preset high voltage value, the control unit sends a control signal to control the corresponding indicator light to turn on.

[0061] In specific practice, Figure 3 In the figure, a schematic diagram of the indicator light group circuit is shown. When the high-voltage static electricity generating unit is controlled by the control unit, the corresponding indicator light can be lit.

[0062] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0063] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0064] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0065] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0066] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0067] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0068] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A high voltage orthogonal rotating electric field realization device, characterized in that: include: A control unit, an electrode sheet group and a high-voltage static electricity generating unit group; The electrode sheet group includes a plurality of electrode sheets, and the plurality of electrode sheets are arranged around preset positions of the pipeline; each electrode sheet is connected to a corresponding high-voltage electrostatic generating unit, and the high-voltage electrostatic generating units are connected to the control unit; The control unit generates a PWM waveform corresponding to each electrode sheet according to a preset rotation mode, and inputs the PWM waveform into the corresponding high-voltage static electricity generating unit; The high-voltage static electricity generating unit obtains a preset high voltage value and the PWM waveform, and generates a driving voltage to the corresponding electrode sheet according to the preset high voltage value and the PWM waveform; Each electrode sheet in the electrode sheet group forms a high-voltage orthogonal rotating electric field according to a corresponding driving voltage.

2. The high voltage orthogonal rotating electric field realization device according to claim 1, characterized in that: The high-voltage static electricity generating unit includes a PID hardware loop, takes the driving voltage as the first input of the PID hardware loop, takes the PWM waveform as the second input of the PID hardware loop, and uses the output value of the PID hardware loop to control the amplitude of a preset high voltage value to generate a driving voltage.

3. The high voltage orthogonal rotating electric field realization device according to claim 2, characterized in that: The high-voltage static electricity generating unit further comprises a voltage sampling port for collecting the driving voltage and sending the driving voltage to the control unit; The control unit uses a PID algorithm to close the loop and adjust the duty cycle of the corresponding PWM waveform output.

4. The high voltage orthogonal rotating electric field realization device according to claim 3 is characterized in that: The high-voltage static electricity generating unit also includes a power control switch; the control end of the power control switch is connected to the control unit; the power control switch is used to control the input of a preset high voltage value according to a switch signal given by the control end.

5. The high voltage orthogonal rotating electric field realizing device according to claim 4, characterized in that: Also includes: an indicator light group connected to the control unit; The indicator lights in the indicator light group correspond to the electrode sheets in the electrode sheet group. When the control unit sends a switch signal to control the high-voltage electrostatic generating unit corresponding to the electrode sheet to receive a preset high voltage value, the control unit sends a control signal to control the corresponding indicator light to turn on.

6. The high voltage orthogonal rotating electric field realization device according to claim 4, characterized in that: The high-voltage static electricity generating unit further includes a Fun1 driving circuit, a piezoelectric ceramic transformer and a first transistor, wherein the base of the first transistor is connected to the control unit, the collector of the first transistor is used as a voltage input terminal to obtain a preset high voltage value, and the emitter of the first transistor is connected to the Fun1 driving circuit; the Fun1 driving circuit is connected to the piezoelectric ceramic transformer and is also connected to the output terminal of the PID hardware loop; the piezoelectric ceramic transformer is connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is grounded through the capacitor C2, the negative electrode of the diode D1 is also connected to the corresponding electrode sheet, the negative electrode of the diode D1 is also connected to the first input terminal of the PID hardware loop through the resistor R1, the negative electrode of the diode D1 is also grounded through the resistors R1 and R2, and the negative electrode of the diode D1 is also connected to the control unit through the resistors R1 and R3; the second input terminal of the PID hardware loop is grounded through the capacitor C3, and is also connected to the control unit through the resistor R4 to receive the PWM waveform.

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