Static elimination control system based on self-adjustment of positive and negative ions

Abstract

The invention relates to a static elimination control system based on self-adjustment of positive and negative ions, belongs to the technical field of static elimination, and solves the problems of low efficiency, unstable effect and response lag of a static elimination method in the prior art. The cage type electricity gathering electrode is used for sensing positive and negative ions in an equipment environment and outputting an ion initial signal; the ion acquisition and processing module is used for performing signal processing on the ion initial signal and outputting an ion voltage signal; the ion control module is used for sampling ion voltage signals according to a set period and generating two paths of control signals of each period through a self-adaptive balance model; and the high-voltage driving module is used for generating two paths of high-voltage driving power supply voltage signals according to the received two paths of control signals and further outputting corresponding driving high voltage to the spray point based on the two paths of high-voltage driving power supply voltage signals, and the spray point releases positive ions and negative ions to an equipment environment, so that dynamic balance of the positive and negative ion quantities is realized. And reliable and efficient static elimination is realized.

Description

Technical Field

[0001] This invention relates to the field of static electricity elimination technology, and in particular to a static electricity elimination control system based on self-regulation of positive and negative ions. Background Technology

[0002] With the rapid development of emerging industrial technologies, especially in high-end manufacturing fields such as automated production lines, electronic component manufacturing, and LCD display panels, electrostatic discharge (ESD) control has become a critical factor affecting equipment operational stability, product yield, and production safety. Static electricity buildup can not only interfere with the performance of precision electronic components but also easily lead to dust accumulation, discharge damage, and even fire hazards, severely impacting product quality and production efficiency. For a long time, industry has primarily relied on physical methods for ESD protection, resulting in basic ESD elimination systems represented by grounding devices, anti-static mats, ionizers, and anti-static wrist straps.

[0003] Traditional electrostatic discharge (ESD) control methods primarily achieve protection through conduction or neutralization of static charges. For example, this involves releasing static charges through grounding or using ion fans to generate positive and negative ions to neutralize the charge on the surface of charged objects. With technological advancements, some systems have begun to incorporate simple software controls to adjust the operating parameters of the ion fan, achieving a degree of active ESD elimination. However, existing ESD elimination technologies often rely on fixed parameters in practical applications, failing to automatically adjust to dynamic changes in environmental ESD levels. This results in limited effectiveness in complex or frequently fluctuating industrial environments. The generation and elimination of ESD are influenced by various factors such as environmental humidity, temperature, airflow, and material composition. Traditional methods lack a multi-factor coordinated control mechanism, leading to significant fluctuations in elimination effectiveness and difficulty in maintaining consistently ideal ESD levels. Furthermore, the lack of real-time monitoring and rapid feedback mechanisms often results in response lag, causing adjustments to be initiated only after ESD has accumulated. This fails to meet the demands of high-paced, high-precision production environments for immediate ESD control, thus impacting overall production safety and efficiency. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a static electricity elimination control system based on positive and negative ion self-regulation, in order to solve the problems of low efficiency, unstable effect and slow response of existing static electricity elimination methods.

[0005] This invention provides a self-regulating electrostatic elimination control system based on positive and negative ions, including an ion acquisition and processing module, an ion control module, a high-voltage drive module, multiple discharge needles, and multiple cage-type focusing electrodes.

[0006] Each of the cage-type electrostatic electrodes is used to sense positive and negative ions in the equipment environment and output an initial ion signal; The ion acquisition and processing module is used to process the initial ion signal and output the ion voltage signal. The ion control module is used to sample the ion voltage signal at a set period and generate two control signals for each period through an adaptive balance model. The high-voltage drive module is used to generate two high-voltage drive power supply voltage signals based on the received two control signals, and then output corresponding high-voltage drive to each of the discharge needles based on the two high-voltage drive power supply voltage signals. Each of the discharge needles releases positive and negative ions into the equipment environment to achieve a dynamic balance between the amount of positive and negative ions.

[0007] Furthermore, each of the cage-type electrostatic electrodes is connected in parallel and then connected to the input terminal of the ion acquisition and processing module; the ion acquisition and processing module includes an ion signal acquisition circuit, an ion signal filtering circuit, and an ion signal amplification and conversion circuit, which acquires, filters, amplifies, and converts the initial ion signal sensed by each of the cage-type electrostatic electrodes to obtain an ion voltage signal.

[0008] Furthermore, the high-voltage drive module includes a high-voltage power supply control unit and a high-voltage drive unit; The high-voltage power supply control unit is used to output positive high-voltage drive power supply voltage signal and negative high-voltage drive power supply voltage signal based on the received positive ion control signal and negative ion control signal. The high-voltage drive unit is used to output a high-voltage drive based on the received positive high-voltage drive supply voltage signal and negative high-voltage drive supply voltage signal.

[0009] Furthermore, the high-voltage power supply control unit includes an output control circuit, a positive high-voltage power supply control circuit, and a negative high-voltage power supply control circuit; The output control circuit is used to receive positive ion control signals and negative ion control signals, and output positive control signals and negative control signals after dead-time control and interlocking logic processing; wherein, the positive control signal and the negative control signal are such that they will not be high at the same time at any time, and the preset dead time interval is maintained when the level state is switched. The positive high voltage power supply control circuit is used to receive the positive control signal and output the positive high voltage drive power supply voltage signal; The negative high-voltage power supply control circuit is used to receive the negative control signal and output the negative high-voltage drive power supply voltage signal.

[0010] Furthermore, each of the discharge needles is connected in parallel and then connected to the output terminal of the high-voltage drive unit; the high-voltage drive unit includes a positive high-voltage drive circuit and a negative high-voltage drive circuit. The input terminal of the positive high voltage drive circuit serves as the positive input terminal of the high voltage drive unit, receiving the positive high voltage drive power supply voltage signal. The input terminal of the negative high-voltage drive circuit serves as the negative input terminal of the high-voltage drive unit, receiving the negative high-voltage drive power supply voltage signal. The output terminal of the positive high voltage drive circuit is connected to the output terminal of the negative high voltage drive circuit, serving as the output terminal of the high voltage drive unit to output driving high voltage; the connection terminal of the positive high voltage drive circuit is connected to the connection terminal of the negative high voltage drive circuit, used to connect and superimpose the positive and negative high voltages in series, thereby achieving single-ended output of driving high voltage.

[0011] Furthermore, the output control circuit includes resistors R10-R14, capacitors C11 and C12, diode D1, and a half-bridge MOSFET driver chip U4. One end of resistor R10 serves as the positive input terminal of the output control circuit, receiving the positive ion control signal; the other end of resistor R10 is connected to the high-side input terminal of the half-bridge MOSFET driver chip U4. One end of resistor R11 serves as the negative input terminal of the output control circuit, receiving the positive ion control signal; the other end of resistor R11 is connected to the low-side input terminal of the half-bridge MOSFET driver chip U4. The power supply terminal of the half-bridge MOSFET driver chip U4 is connected to one end of capacitor C11 and the anode of diode D1. The ground terminal of the half-bridge MOSFET driver chip U4 is connected to capacitor C11. The other end is connected; the high-side floating power supply terminal of the half-bridge MOSFET driver chip U4 is connected to the negative terminal of diode D1 and one end of capacitor C12; the other end of capacitor C12 is connected to the high-side ground terminal of the half-bridge MOSFET driver chip U4, and also serves as the first control terminal of the output control circuit; the high-side drive output terminal of the half-bridge MOSFET driver chip U4 is connected to one end of resistor R12, and the other end of resistor R12 serves as the second control terminal of the output control circuit; the low-side drive output terminal of the half-bridge MOSFET driver chip U4 is connected to one end of resistor R13; the other end of resistor R13 is connected to one end of resistor R14, and also serves as the third control terminal of the output control circuit; the other end of resistor R14 serves as the fourth control terminal of the output control circuit.

[0012] Furthermore, the positive high voltage power supply control circuit includes a resistor R15, a Zener diode D2, a MOSFET transistor Q1, a first filter circuit, and an inductor L1. The source of the MOSFET transistor Q1 serves as the first input terminal of the positive high voltage power supply control circuit and is connected to the first control terminal of the output control circuit. The source of the MOSFET transistor Q1 is also connected to one end of the resistor R15. The other end of the resistor R15 is connected to the gate of the MOSFET transistor Q1. The gate of the MOSFET transistor Q1 serves as the second input terminal of the positive high voltage power supply control circuit and is connected to the second control terminal of the output control circuit. The drain of the MOSFET transistor Q1 is connected to the second power supply. The source of the MOSFET transistor Q1 is connected to one end of the inductor L1 and the cathode of the Zener diode D2. The other end of the inductor L1 is connected to the connection terminal of the first filter circuit and also serves as the output terminal of the positive high voltage power supply control circuit, outputting a positive high voltage drive power supply voltage signal. The ground terminal of the first filter circuit and the anode of the Zener diode D2 are both grounded. The MOSFET transistor Q1 is an N-channel enhancement-mode MOSFET.

[0013] Furthermore, the negative high-voltage power supply control circuit includes resistors R17-R18, Zener diode 3, MOSFET transistor Q2, MOSFET transistor Q3, a second filter circuit, and inductor L2; the gate of MOSFET transistor Q3 serves as the third input terminal of the negative high-voltage power supply control circuit and is connected to the third control terminal of the output control circuit; the source of MOSFET transistor Q3 serves as the fourth input terminal of the negative high-voltage power supply control circuit and is connected to the fourth control terminal of the output control circuit; the drain of MOSFET transistor Q3 is connected to one end of resistor R18; the other end of resistor R18 is connected to the gate of MOSFET transistor Q2. One end of resistor R17 is connected; the other end of resistor R17 is connected to the source of MOSFET transistor Q2 and also to the first power supply; the drain of MOSFET transistor Q2 is connected to one end of inductor L2 and the cathode of Zener diode D3; the other end of inductor L2 is connected to the connection terminal of the second filter circuit and also serves as the output terminal of the negative high voltage power supply control circuit, outputting the negative high voltage drive power supply voltage signal; the ground terminal of the second filter circuit and the anode of Zener diode D3 are both grounded; wherein, MOSFET transistor Q2 is an N-channel enhancement-mode MOSFET and MOSFET transistor Q3 is a P-channel enhancement-mode MOSFET.

[0014] Furthermore, the positive high-voltage drive circuit includes inductor L3, resistors R20~R22, Zener diodes D4 and D5, MOSFET transistors Q4 and Q5, capacitors C17~C25, diodes D6~D13, and transformer T1. One end of inductor L3 serves as the input terminal of the positive high-voltage drive circuit; the other end of inductor L3 is connected to one end of resistor R20, one end of resistor R21, the center tap of transformer T1, and the third power supply; the other end of resistor R20 is connected to the anode of Zener diode D4 and the gate of MOSFET transistor Q5; the cathode of Zener diode D4 is connected to the source of MOSFET transistor Q4, one end of capacitor C17, and one end of the primary winding of transformer T1; the drain of MOSFET transistor Q4 is grounded, and its gate is connected to the other end of resistor R21 and the anode of Zener diode D5; the cathode of Zener diode D5 is connected to the other end of capacitor C17, the drain of MOSFET transistor Q5, and the other end of the primary winding of transformer T1; the source of MOSFET transistor Q5 is grounded. One end of the secondary winding of transformer T1 is connected to one end of capacitor C18; the other end of capacitor C18 is connected to the negative terminal of diode D6, the positive terminal of diode D7, and one end of capacitor C19; the other end of capacitor C19 is connected to the negative terminal of diode D8, the positive terminal of diode D9, and one end of capacitor C20; the other end of capacitor C20 is connected to the negative terminal of diode D10, the positive terminal of diode D11, and one end of capacitor C21; the other end of capacitor C21 is connected to the negative terminal of diode D12 and the positive terminal of diode D13; the other end of the secondary winding of transformer T1 is connected to the positive terminal of diode D6, and one end of capacitor C19. One end of capacitor C22 is connected and also serves as the connection terminal of the positive high-voltage drive circuit; the other end of capacitor C22 is connected to the cathode of diode D7, the anode of diode D8, and one end of capacitor C23; the other end of capacitor C23 is connected to the cathode of diode D9, the anode of diode D10, and one end of capacitor C24; the other end of capacitor C24 is connected to the cathode of diode D11, the anode of diode D12, and one end of capacitor C25; the other end of capacitor C25 is connected to the cathode of diode D13 and one end of resistor R22; the other end of resistor R22 serves as the output terminal of the positive high-voltage drive circuit. Among them, MOSFET transistor Q4 is a P-channel enhancement-mode MOSFET, and MOSFET transistor Q5 is an N-channel enhancement-mode MOSFET.

[0015] Furthermore, the two control signals output by the ion control module correspond to positive ion control signal and negative ion control signal respectively, and the two control signals are output alternately within the cycle; wherein, the output time of both control signals is half a cycle; both control signals are PWM signals; the duty cycle of the positive ion control signal remains unchanged in each cycle.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This invention provides a static electricity elimination control system based on positive and negative ion self-regulation. By monitoring the static electricity intensity and distribution of the controlled equipment in real time, and dynamically and automatically adjusting the working parameters and control strategies of the static electricity elimination equipment based on feedback data, the system achieves adaptive balance adjustment of positive and negative ions. This enables the system to respond quickly to environmental changes and maintain a highly efficient and stable static electricity elimination effect under different humidity, temperature, and production rhythm conditions. It effectively avoids the problem of static electricity accumulation caused by response lag and significantly optimizes equipment performance and production safety.

[0017] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from the description and drawings, which are particularly pointed out. Attached Figure Description

[0018] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0019] Figure 1 A schematic diagram of the electrostatic elimination control system based on positive and negative ion self-regulation provided in an embodiment of the present invention; Figure 2 This is a circuit connection diagram of the ion acquisition and processing module provided in an embodiment of the present invention; Figure 3 This is a schematic diagram showing the ratio of the average positive and negative ion voltage to the ion output quantity provided in an embodiment of the present invention. Figure 4 A circuit connection diagram of the high-voltage power supply control unit provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the input and output signals of the high-voltage power supply control unit provided in an embodiment of the present invention; Figure 6 A circuit connection diagram of the high-voltage drive unit provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the input and output signals of the high-voltage drive unit provided in an embodiment of the present invention. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0021] A specific embodiment of the present invention discloses a static electricity elimination control system based on self-regulation of positive and negative ions, such as... Figure 1 As shown, it includes: an ion acquisition and processing module, an ion control module, a high-voltage drive module, multiple discharge needles, and multiple cage-type focusing electrodes; Each of the cage-type electrostatic electrodes is used to sense positive and negative ions in the equipment environment and output an initial ion signal; The ion acquisition and processing module is used to process the initial ion signal and output the ion voltage signal. The ion control module is used to sample the ion voltage signal at a set period and generate two control signals for each period through an adaptive balance model. The high-voltage drive module is used to generate two high-voltage drive power supply voltage signals based on the received two control signals, and then output corresponding high-voltage drive to each of the discharge needles based on the two high-voltage drive power supply voltage signals. Each of the discharge needles releases positive and negative ions into the equipment environment to achieve a dynamic balance between the amount of positive and negative ions.

[0022] Specifically, monitoring points are set according to specific equipment monitoring needs, and cage-type electrostatic electrodes are placed at the monitoring points. The cage-type electrostatic electrodes should sense positive and negative ions in the equipment environment at the monitoring point location, and the magnitude of the positive and negative ions is reflected in the induced ion signal voltage waveform.

[0023] Understandably, cage-type focusing electrodes have an ion signal enhancement effect, while ordinary flat electrodes, being open electrodes, lack the focusing effect of cages, resulting in weaker electrical signals and a tendency to lose electrical signal parameters. Furthermore, cage-type electrodes are more likely to excite ions than flat electrodes, allowing for concentrated ion output. Compared to flat electrodes, cage-type electrodes require a lower excitation voltage for the discharge needle when outputting the same amount of ions, resulting in better anti-aging properties and a longer lifespan for the discharge needle.

[0024] Specifically, the discharge needle outputs positive and negative ions by ionizing air under high voltage.

[0025] In implementation, each of the cage-type focusing electrodes is connected in parallel and then connected to the input terminal of the ion acquisition and processing module; for example... Figure 2 As shown, the ion acquisition and processing module includes an ion signal acquisition circuit, an ion signal filtering circuit, and an ion signal amplification and level conversion circuit. It acquires, filters, amplifies, and converts the initial ion signals sensed by each of the cage-type electrostatic electrodes to obtain an ion voltage signal.

[0026] Understandably, the ion acquisition and processing module amplifies the initial ion signal induced by the cage-type electrostatic precipitator and filters out interference signals in the signal. Then, it performs level conversion to output an ion voltage signal that matches the level input requirements of the ion control module.

[0027] In specific implementation, such as Figure 2 As shown, the ion signal acquisition circuit includes resistors RB1, R1, R2, capacitors C1, C3, and C9, and operational amplifier U1. One end of resistor RB1 serves as the input terminal of the ion signal acquisition circuit, receiving the initial ion signal. The other end of resistor RB1 is connected to the non-inverting input terminal of operational amplifier U1. The inverting input terminal of operational amplifier U1 is connected to one end of resistor R1, one end of resistor R2, and one end of capacitor C3. The output terminal of operational amplifier U1 is connected to the other end of resistor R2 and the other end of capacitor C3, and also serves as the output terminal of the ion signal acquisition circuit. The other end of resistor R1 is grounded. The positive power supply terminal of operational amplifier U1 is connected to the positive power supply terminal of the first power supply, and is also grounded after passing through capacitor C1. The negative power supply terminal of operational amplifier U1 is connected to the negative power supply terminal of the first power supply, and is also grounded after passing through capacitor C9.

[0028] In specific implementation, such as Figure 2 As shown, the ion signal filtering circuit includes resistors R5, R6, and R7, capacitors C2, C5, C7, and C8, and operational amplifier U2. One end of resistor R5 serves as the input terminal of the ion signal filtering circuit and is connected to the output terminal of the ion signal acquisition circuit. The other end of resistor R5 is connected to resistor R6 and one end of capacitor C5. The other end of resistor R6 is connected to the non-inverting input terminal of operational amplifier U2 and is grounded via capacitor C7. The inverting input terminal of operational amplifier U2 is connected to the other end of capacitor C5 and the output terminal of operational amplifier U2. The output terminal of operational amplifier U2 is connected to one end of resistor R7. The other end of resistor R7 serves as the output terminal of the ion signal filtering circuit. The positive power supply terminal of operational amplifier U2 is connected to the positive power supply terminal of the first power supply and is grounded via capacitor C2. The negative power supply terminal of operational amplifier U2 is connected to the negative power supply terminal of the first power supply and is grounded via capacitor C8.

[0029] In specific implementation, the ion signal amplification and level conversion circuit includes resistors R3, R4, R8, and R9, capacitors C4, C6, and C10, and operational amplifier U3. The negative input terminal of operational amplifier U3 is grounded after passing through resistor R9. The non-inverting input terminal of operational amplifier U3 serves as the input terminal of the ion signal amplification and level conversion circuit and is connected to the output terminal of the ion signal filtering circuit. The non-inverting input terminal of operational amplifier U3 is connected to one end of resistor R4 and one end of capacitor C6. The output terminal of operational amplifier U3 is connected to the other end of resistor R4, the other end of capacitor C6, and one end of resistor R8. The other end of resistor R8 is connected to one end of resistor R3 and also serves as the output terminal of the ion signal amplification and level conversion circuit, outputting the ion voltage signal. The positive power supply terminal of operational amplifier U3 is connected to the other end of resistor R3, one end of capacitor C4, and the positive power supply terminal of the first power supply. The other end of capacitor C4 is grounded. The negative power supply terminal of operational amplifier U3 is connected to the negative power supply terminal of the first power supply and is also grounded after passing through capacitor C10.

[0030] It should be noted that the input terminal of the ion signal acquisition circuit serves as the input terminal of the ion acquisition and processing module, receiving the initial ion signal induced by the cage-type electrostatic electrode; the output terminal of the ion signal amplification and level conversion circuit serves as the output terminal of the ion acquisition and processing module, outputting the ion voltage signal.

[0031] In practice, the two control signals output by the ion control module correspond to the positive ion control signal and the negative ion control signal, respectively, and the two control signals are output alternately within a cycle; wherein, the output time of both control signals is half a cycle; both control signals are PWM signals; the duty cycle of the positive ion control signal remains unchanged in each cycle.

[0032] It should be noted that the ion control module controls the effective working time of the subsequent driving high voltage in each output period by adjusting the duty cycle of the two control signals. In other words, by fixing the duty cycle of the positive ion control signal and adjusting the duty cycle of the negative ion control signal, the working time of the driving high voltage is controlled and adjusted, thereby adjusting the amount of positive and negative ions released by the discharge needle.

[0033] In specific implementation, the negative ion control signal for each cycle is obtained in the ion control module through the following steps: S1. Acquire the positive ion voltage signal during the output time of the positive ion control signal in the current cycle, and sample it. Take the average value of each positive ion voltage obtained by sampling as the average value of the positive ion voltage in the current cycle.

[0034] S2. During the output time of the negative ion control signal in the current cycle, the negative ion voltage signal is collected and sampled. The average value of each negative ion voltage obtained by sampling is taken as the average value of the negative ion voltage in the current cycle.

[0035] Specifically, the ion control module performs multiple AD samplings in each cycle, with the number of samplings per cycle being greater than or equal to 3000, to improve the accuracy of the signal average value. For example, the cycle is set to 0.2 seconds.

[0036] It should be noted that steps S1 and S2 are not sequential; they can be performed according to the specific output time of the positive and negative ion control signals.

[0037] S3. Based on the constructed adaptive equilibrium model and the average positive ion voltage of the current cycle, the theoretical negative ion voltage value of the current cycle is obtained. Specifically, the adaptive equilibrium model is expressed as: ; In the formula, This represents the average positive ion voltage of the current period. This represents the theoretical negative ion voltage value for the current cycle. Represents the proportionality coefficient. , , These represent the first, second, and third correction terms, respectively. The first correction term finely adjusts the model output, the second correction term compensates for second-order nonlinearity biases in the model, and the third correction term compensates for baseline or zero-point biases in the system.

[0038] Specifically, the parameters in the adaptive equilibrium model , , , This is obtained by measuring and fitting the relationship between the average positive and negative ion signal sampling values ​​(i.e., the average positive and negative ion voltages) and the ion output in actual use scenarios. This relationship is related to the selected hardware configuration of the system, such as the discharge needle, circuit components, and the target working environment. For example, such as... Figure 3 The figure shows the ratio curve between the measured average positive and negative ion voltage and the ion output. The value range is from 1.02 to 1.10. The value range is 0.001 to 0.05. The value range is 0.005 to 0.1. The range of values ​​is 0.2 to +0.2.

[0039] It should be noted that after the system is powered on, the ion control module first initializes by outputting two control signals with fixed parameters; the fixed parameters are that the duty cycle of both control signals is set to 0.7.

[0040] S4. Based on the theoretical negative ion voltage value and average negative ion voltage of the current cycle and the negative ion control signal of the previous cycle, obtain the negative ion control signal for the next cycle.

[0041] Specifically, based on the difference between the average negative ion voltage of the current cycle and the theoretical negative ion voltage of the current cycle, and the duty cycle of the negative ion control signal of the current cycle, a PID algorithm is used to obtain the duty cycle of the negative ion control signal for the next cycle. It is understandable that using the PID algorithm can smoothly adjust the signal, prevent oscillations, and achieve rapid convergence.

[0042] More specifically, the PID algorithm is expressed as: ; in, ; In the formula, , These represent the duty cycles of the negative ion control signals in the current and next cycles, respectively. , , These represent the first, second, and third PID coefficients, respectively. This represents the average negative ion voltage of the current cycle. Compared with the current cycle theoretical negative ion voltage value The difference, This represents the cumulative sum of all historical differences. This indicates the rate of change of the current error.

[0043] In practice, the ion control module uses a microcontroller (MCU).

[0044] It is understandable that positive and negative ions are output in one cycle. Within the current cycle, the output of negative ions in the next cycle is adjusted and controlled by an algorithm through a fixed positive ion control signal and a controllable negative ion control signal, so as to achieve a balance between positive and negative ion output to eliminate static electricity in the object and minimize the static voltage value of the object.

[0045] In practice, the high-voltage drive module includes a high-voltage power supply control unit and a high-voltage drive unit; The high-voltage power supply control unit is used to output positive high-voltage drive power supply voltage signal and negative high-voltage drive power supply voltage signal based on the received positive ion control signal and negative ion control signal. The high-voltage drive unit is used to output a high-voltage drive based on the received positive high-voltage drive supply voltage signal and negative high-voltage drive supply voltage signal.

[0046] In specific implementation, such as Figure 4 As shown, the high-voltage power supply control unit includes an output control circuit, a positive high-voltage power supply control circuit, and a negative high-voltage power supply control circuit; The output control circuit is used to receive positive ion control signals and negative ion control signals, and output positive control signals and negative control signals after dead-time control and interlocking logic processing; wherein, the positive control signal and the negative control signal are such that they will not be high at the same time at any time, and the preset dead time interval is maintained when the level state is switched. The positive high voltage power supply control circuit is used to receive the positive control signal and output the positive high voltage drive power supply voltage signal; The negative high-voltage power supply control circuit is used to receive the negative control signal and output the negative high-voltage drive power supply voltage signal.

[0047] Specifically, the dead-time control and interlocking logic in the output control circuit is as follows: when the two received control signals are both high, both output signals are forced to be set to low. Furthermore, a preset dead time is inserted between the transition edges of the two control signals to ensure that the other output signal remains invalid before either output signal becomes valid.

[0048] For example, the dead time can be set to 100 nanoseconds, which is greater than the switching delay time of the power MOSFET, reliably preventing bridge arm shoot-through short circuits, while being much smaller than the control cycle, so its impact on system performance is negligible.

[0049] For example, such as Figure 5 As shown, the positive ion control signal S+, the negative ion control signal S-, and the corresponding positive high-voltage drive supply voltage signal DRVT+ and negative high-voltage drive supply voltage signal DRVT- are shown.

[0050] Specifically, such as Figure 4As shown, the output control circuit includes resistors R10~R14, capacitors C11 and C12, diode D1, and a half-bridge MOSFET driver chip U4. One end of resistor R10 serves as the positive input terminal of the output control circuit, receiving the positive ion control signal; the other end of resistor R10 is connected to the high-side input terminal HIN of the half-bridge MOSFET driver chip U4. One end of resistor R11 serves as the negative input terminal of the output control circuit, receiving the positive ion control signal; the other end of resistor R11 is connected to the low-side input terminal LIN of the half-bridge MOSFET driver chip U4. The power supply terminal VCC of the half-bridge MOSFET driver chip U4 is connected to the second power supply, and also connected to one end of capacitor C11 and the anode of diode D1. The ground terminal COM of the half-bridge MOSFET driver chip U4 is grounded. The high-side floating power supply terminal VB of the half-bridge MOSFET driver chip U4 is connected to the negative terminal of diode D1 and one end of capacitor C12; the other end of capacitor C12 is connected to the high-side ground terminal VS of the half-bridge MOSFET driver chip U4, and also serves as the first control terminal of the output control circuit; the high-side drive output terminal HO of the half-bridge MOSFET driver chip U4 is connected to one end of resistor R12, and the other end of resistor R12 serves as the second control terminal of the output control circuit; the low-side drive output terminal LO of the half-bridge MOSFET driver chip U4 is connected to one end of resistor R13; the other end of resistor R13 is connected to one end of resistor R14, and also serves as the third control terminal of the output control circuit; the other end of resistor R14 serves as the fourth control terminal of the output control circuit. The dead-time control and interlocking logic processing is performed within the half-bridge MOSFET driver chip U4.

[0051] Specifically, such as Figure 4 As shown, the positive high voltage power supply control circuit includes a resistor R15, a Zener diode D2, a MOSFET transistor Q1, a first filter circuit, and an inductor L1. The source of the MOSFET transistor Q1 serves as the first input terminal of the positive high voltage power supply control circuit and is connected to the first control terminal of the output control circuit. The source of the MOSFET transistor Q1 is also connected to one end of the resistor R15. The other end of the resistor R15 is connected to the gate of the MOSFET transistor Q1. The gate of the MOSFET transistor Q1 serves as the second input terminal of the positive high voltage power supply control circuit and is connected to the second control terminal of the output control circuit. The drain of the MOSFET transistor Q1 is connected to the second power supply. The source of the MOSFET transistor Q1 is connected to one end of the inductor L1 and the cathode of the Zener diode D2. The other end of the inductor L1 is connected to the connection terminal of the first filter circuit and also serves as the output terminal of the positive high voltage power supply control circuit, outputting a positive high voltage drive power supply voltage signal. The ground terminal of the first filter circuit and the anode of the Zener diode D2 are both grounded. The MOSFET transistor Q1 is an N-channel enhancement-mode MOSFET.

[0052] More specifically, the first filter circuit includes an electrolytic capacitor C13, a capacitor C14, and a resistor R16; one end of the electrolytic capacitor C13 is connected to one end of the capacitor C14 and one end of the resistor R16, and also serves as the connection terminal of the first filter circuit; the other end of the electrolytic capacitor C13 is connected to the other end of the capacitor C14 and the other end of the resistor R16, and also serves as the ground terminal of the first filter circuit.

[0053] Specifically, such as Figure 4 As shown, the negative high-voltage power supply control circuit includes resistors R17-R18, Zener diode 3, MOSFET transistor Q2, MOSFET transistor Q3, a second filter circuit, and inductor L2. The gate of MOSFET transistor Q3 serves as the third input terminal of the negative high-voltage power supply control circuit and is connected to the third control terminal of the output control circuit. The source of MOSFET transistor Q3 serves as the fourth input terminal of the negative high-voltage power supply control circuit and is connected to the fourth control terminal of the output control circuit. The drain of MOSFET transistor Q3 is connected to one end of resistor R18. The other end of resistor R18 is connected to the gate of MOSFET transistor Q2. One end of resistor R17 is connected to the source of MOSFET transistor Q2 and the first power supply. The drain of MOSFET transistor Q2 is connected to one end of inductor L2 and the cathode of Zener diode D3. The other end of inductor L2 is connected to the connection terminal of the second filter circuit and also serves as the output terminal of the negative high voltage power supply control circuit, outputting the negative high voltage drive power supply voltage signal. The ground terminal of the second filter circuit and the anode of Zener diode D3 are both grounded. Among them, MOSFET transistor Q2 is an N-channel enhancement-mode MOSFET and MOSFET transistor Q3 is a P-channel enhancement-mode MOSFET.

[0054] More specifically, the second filter circuit includes an electrolytic capacitor C15, a capacitor C16, and a resistor R19; one end of the electrolytic capacitor C15 is connected to one end of the capacitor C16 and one end of the resistor R19, and also serves as the connection terminal of the second filter circuit; the other end of the electrolytic capacitor C15 is connected to the other end of the capacitor C16 and the other end of the resistor R19, and also serves as the ground terminal of the first filter circuit.

[0055] It should be noted that the positive and negative input terminals of the output control circuit serve as the positive and negative input terminals of the high-voltage power supply control unit, respectively; the output terminal of the positive high-voltage power supply control circuit serves as the positive output terminal of the high-voltage power supply control unit; and the output terminal of the negative high-voltage power supply control circuit serves as the negative output terminal of the high-voltage power supply control unit.

[0056] Understandably, the high-voltage power supply control unit has a simple and reliable circuit, and its output power supply voltage signal and the output time of each signal are highly precise and easy to control.

[0057] In specific implementation, each of the discharge needles is connected in parallel and then connected to the output terminal of the high-voltage drive unit; for example... Figure 6 As shown, the high-voltage drive unit includes a positive high-voltage drive circuit and a negative high-voltage drive circuit; The input terminal of the positive high voltage drive circuit serves as the positive input terminal of the high voltage drive unit, receiving the positive high voltage drive power supply voltage signal. The input terminal of the negative high-voltage drive circuit serves as the negative input terminal of the high-voltage drive unit, receiving the negative high-voltage drive power supply voltage signal. The output terminal of the positive high voltage drive circuit is connected to the output terminal of the negative high voltage drive circuit, serving as the output terminal of the high voltage drive unit to output driving high voltage; the connection terminal of the positive high voltage drive circuit is connected to the connection terminal of the negative high voltage drive circuit, used to connect and superimpose the positive and negative high voltages in series, thereby achieving single-ended output of driving high voltage.

[0058] For example, such as Figure 7 As shown, this represents the positive and negative high-voltage drive supply voltage signals and the corresponding drive high voltage.

[0059] Specifically, such as Figure 6 As shown, the positive high-voltage drive circuit includes inductor L3, resistors R20~R22, Zener diodes D4 and D5, MOSFET transistors Q4 and Q5, capacitors C17~C25, diodes D6~D13, and transformer T1. One end of inductor L3 serves as the input terminal of the positive high-voltage drive circuit. The other end of inductor L3 is connected to one end of resistor R20, one end of resistor R21, the center tap of transformer T1, and the third power supply. The other end of resistor R20 is connected to the anode of Zener diode D4 and the gate of MOSFET transistor Q5. The cathode of Zener diode D4 is connected to the source of MOSFET transistor Q4, one end of capacitor C17, and one end of the primary winding of transformer T1. The drain of MOSFET transistor Q4 is grounded, and its gate is connected to the other end of resistor R21 and the anode of Zener diode D5. The cathode of Zener diode D5 is connected to the other end of capacitor C17, the drain of MOSFET transistor Q5, and the other end of the primary winding of transformer T1. The source of MOSFET transistor Q5 is grounded. One end of the secondary winding of transformer T1 is connected to one end of capacitor C18; the other end of capacitor C18 is connected to the negative terminal of diode D6, the positive terminal of diode D7, and one end of capacitor C19; the other end of capacitor C19 is connected to the negative terminal of diode D8, the positive terminal of diode D9, and one end of capacitor C20; the other end of capacitor C20 is connected to the negative terminal of diode D10, the positive terminal of diode D11, and one end of capacitor C21; the other end of capacitor C21 is connected to the negative terminal of diode D12 and the positive terminal of diode D13; the other end of the secondary winding of transformer T1 is connected to the positive terminal of diode D6, and one end of capacitor C19. One end of capacitor C22 is connected and also serves as the connection terminal of the positive high-voltage drive circuit; the other end of capacitor C22 is connected to the cathode of diode D7, the anode of diode D8, and one end of capacitor C23; the other end of capacitor C23 is connected to the cathode of diode D9, the anode of diode D10, and one end of capacitor C24; the other end of capacitor C24 is connected to the cathode of diode D11, the anode of diode D12, and one end of capacitor C25; the other end of capacitor C25 is connected to the cathode of diode D13 and one end of resistor R22; the other end of resistor R22 serves as the output terminal of the positive high-voltage drive circuit. Among them, MOSFET transistor Q4 is a P-channel enhancement-mode MOSFET, and MOSFET transistor Q5 is an N-channel enhancement-mode MOSFET.

[0060] Specifically, such as Figure 6 As shown, the negative high-voltage drive circuit includes inductor L4, resistors R23~R25, Zener diodes D14 and D15, MOSFET transistors Q6 and Q7, capacitors C26~C34, diodes D16~D23, and transformer T2. One end of inductor L4 serves as the input terminal of the negative high-voltage drive circuit; the other end of inductor L4 is connected to one end of resistor R23, one end of resistor R24, the center tap of transformer T2, and the third power supply; the other end of resistor R23 is connected to the positive terminal of Zener diode D14. The gate of MOSFET transistor Q7 is connected to the source of transformer T2; the cathode of Zener diode D14 is connected to the drain of MOSFET transistor Q6, one end of capacitor C26, and one end of the primary winding of transformer T2; the source of MOSFET transistor Q6 is grounded, and its gate is connected to the other end of resistor R24 ​​and the anode of Zener diode D15; the cathode of Zener diode D15 is connected to the other end of capacitor C26, the drain of MOSFET transistor Q7, and the other end of the primary winding of transformer T2; the source of MOSFET transistor Q7 is grounded. One end of the secondary winding of transformer T2 is connected to one end of capacitor C27; the other end of capacitor C27 is connected to the cathode of diode D17, the anode of diode D16, and one end of capacitor C28; the other end of capacitor C28 is connected to the cathode of diode D19, the anode of diode D18, and one end of capacitor C29; the other end of capacitor C29 is connected to the cathode of diode D21, the anode of diode D20, and one end of capacitor C30; the other end of capacitor C30 is connected to the cathode of diode D23 and the anode of diode D22; the other end of the secondary winding of transformer T1 is connected to the cathode of diode D16, one end of capacitor C31, and one end of resistor R26, and also serves as a negative high-voltage drive circuit. The connection terminals are as follows: the other end of resistor R26 is grounded; the other end of capacitor C31 is connected to the negative terminal of diode D7, the positive terminal of diode D8, and one end of capacitor C23; the other end of capacitor C23 is connected to the negative terminal of diode D18, the positive terminal of diode D17, and one end of capacitor C32; the other end of capacitor C32 is connected to the negative terminal of diode D20, the positive terminal of diode D19, and one end of capacitor C33; the other end of capacitor C33 is connected to the negative terminal of diode D22, the positive terminal of diode D21, and one end of capacitor C34; the other end of capacitor C34 is connected to the anode of diode D23 and one end of resistor R25; the other end of resistor R25 serves as the output terminal of the negative high-voltage drive circuit. Among them, MOSFET transistor Q4 is an N-channel enhancement-mode MOSFET, and MOSFET transistor Q5 is an N-channel enhancement-mode MOSFET.

[0061] Taking the operation of the positive high voltage drive circuit as an example, when the positive high voltage drive supply voltage signal DRVT+ has voltage, one of the MOSFET transistors Q4 and Q5 will be turned on. If MOSFET transistor Q5 turns on first, the current enters from the center tap 2 of transformer T1 and exits from the other end 3 of the initial winding. According to the principle of inductor self-induction, a high voltage is induced at one end 1 of the initial winding, causing MOSFET transistor Q5 to saturate and conduct. The voltage of capacitor C10 is positive at the top and negative at the bottom. The change in current from the center tap 2 of transformer T1 to the other end 3 of the initial winding gradually decreases, and the induced voltage at one end 1 of the initial winding also gradually decreases. The voltage of capacitor C10 is negative at the top and positive at the bottom, and MOSFET transistor Q5 gradually turns off, causing the gate voltage of MOSFET transistor Q4 to gradually increase, causing MOSFET transistor Q1 to gradually turn on. Then MOSFET transistor Q4 turns on and MOSFET transistor Q5 turns off. In this way, MOSFET transistors Q4 and Q5 repeatedly turn on and off, and the circuit forms a self-excited oscillation.

[0062] It should be noted that in the high-voltage drive unit, components Q4, Q5, R20, R21, D4, D5, C17, and T1 form a dual-transistor self-excited oscillation circuit. The oscillation voltage is output as a positive DC high voltage through a voltage multiplier rectifier circuit composed of T1, C18~C25, and D6~D13. The DC high voltage is then divided by resistors R22 and R25 and output to the discharge needle. Similarly, components Q6, Q7, R23, R24, D14, D15, C26, and T2 form a dual-transistor self-excited oscillation circuit. The oscillation voltage is output as a negative DC high voltage through a voltage multiplier rectifier circuit composed of T2, C27~C34, and D16~D23. The DC high voltage is then divided by resistors R22 and R25 and output to drive the high voltage to the discharge needle. In this embodiment, the voltage multiplier is 8, which has been tested and found to be the most effective.

[0063] Understandably, the high-voltage drive unit can isolate high and low voltage, protecting the safety of low-voltage devices, such as ensuring the overall safety of the equipment by preventing the MCU from being affected by high voltage.

[0064] Compared with existing technologies, this embodiment provides a static electricity elimination control system based on positive and negative ion self-regulation. By monitoring the static electricity intensity and distribution of the controlled equipment in real time, and dynamically and automatically adjusting the working parameters and control strategies of the static electricity elimination equipment based on feedback data, the system achieves adaptive balance adjustment of positive and negative ions. This enables the system to respond quickly to environmental changes and maintain a highly efficient and stable static electricity elimination effect under different humidity, temperature and production rhythm conditions. It effectively avoids the problem of static electricity accumulation caused by response lag and significantly optimizes equipment performance and production safety.

[0065] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A static electricity elimination control system based on self-regulation of positive and negative ions, characterized in that, It includes an ion acquisition and processing module, an ion control module, a high-voltage drive module, multiple discharge needles, and multiple cage-type focusing electrodes; Each of the cage-type electrostatic electrodes is used to sense positive and negative ions in the equipment environment and output an initial ion signal; The ion acquisition and processing module is used to process the initial ion signal and output the ion voltage signal. The ion control module is used to sample the ion voltage signal at a set period and generate two control signals for each period through an adaptive balance model. The high-voltage drive module is used to generate two high-voltage drive power supply voltage signals based on the received two control signals, and then output corresponding high-voltage drive to each of the discharge needles based on the two high-voltage drive power supply voltage signals. Each of the discharge needles releases positive and negative ions into the equipment environment to achieve a dynamic balance between the amount of positive and negative ions.

2. The electrostatic elimination control system based on self-regulation of positive and negative ions according to claim 1, characterized in that, Each of the cage-type electrostatic electrodes is connected in parallel and then connected to the input terminal of the ion acquisition and processing module. The ion acquisition and processing module includes an ion signal acquisition circuit, an ion signal filtering circuit, and an ion signal amplification and conversion circuit, which acquires, filters, amplifies, and converts the initial ion signals sensed by each of the cage-type electrostatic electrodes to obtain an ion voltage signal.

3. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 1, characterized in that, The high-voltage drive module includes a high-voltage power supply control unit and a high-voltage drive unit; The high-voltage power supply control unit is used to output positive high-voltage drive power supply voltage signal and negative high-voltage drive power supply voltage signal based on the received positive ion control signal and negative ion control signal. The high-voltage drive unit is used to output a high-voltage drive based on the received positive high-voltage drive supply voltage signal and negative high-voltage drive supply voltage signal.

4. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 3, characterized in that, The high-voltage power supply control unit includes an output control circuit, a positive high-voltage power supply control circuit, and a negative high-voltage power supply control circuit. The output control circuit is used to receive positive ion control signals and negative ion control signals, and output positive control signals and negative control signals after dead-time control and interlocking logic processing; wherein, the positive control signal and the negative control signal are such that they will not be high at the same time at any time, and a preset dead time interval is maintained when the level state switches. The positive high voltage power supply control circuit is used to receive the positive control signal and output the positive high voltage drive power supply voltage signal; The negative high-voltage power supply control circuit is used to receive the negative control signal and output the negative high-voltage drive power supply voltage signal.

5. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 4, characterized in that, Each of the discharge needles is connected in parallel and then connected to the output terminal of the high-voltage drive unit; the high-voltage drive unit includes a positive high-voltage drive circuit and a negative high-voltage drive circuit; The input terminal of the positive high voltage drive circuit serves as the positive input terminal of the high voltage drive unit, receiving the positive high voltage drive power supply voltage signal. The input terminal of the negative high-voltage drive circuit serves as the negative input terminal of the high-voltage drive unit, receiving the negative high-voltage drive power supply voltage signal. The output terminal of the positive high voltage drive circuit is connected to the output terminal of the negative high voltage drive circuit, serving as the output terminal of the high voltage drive unit to output driving high voltage. The connection terminal of the positive high voltage drive circuit is connected to the connection terminal of the negative high voltage drive circuit, which is used to connect the positive and negative high voltages in series and superimpose them to achieve single-ended output of the driving high voltage.

6. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 4 is characterized in that, The output control circuit includes resistors R10-R14, capacitors C11 and C12, diode D1, and a half-bridge MOSFET driver chip U4. One end of resistor R10 serves as the positive input of the output control circuit, receiving the positive ion control signal; the other end of resistor R10 is connected to the high-side input of the half-bridge MOSFET driver chip U4. One end of resistor R11 serves as the negative input of the output control circuit, receiving the positive ion control signal; the other end of resistor R11 is connected to the low-side input of the half-bridge MOSFET driver chip U4. The power supply terminal of the half-bridge MOSFET driver chip U4 is connected to one end of capacitor C11 and the anode of diode D1. The ground terminal of the half-bridge MOSFET driver chip U4 is connected to the other end of capacitor C11. One end is connected; the high-side floating power supply terminal of the half-bridge MOSFET driver chip U4 is connected to the negative terminal of diode D1 and one end of capacitor C12; the other end of capacitor C12 is connected to the high-side ground terminal of the half-bridge MOSFET driver chip U4, and also serves as the first control terminal of the output control circuit; the high-side drive output terminal of the half-bridge MOSFET driver chip U4 is connected to one end of resistor R12, and the other end of resistor R12 serves as the second control terminal of the output control circuit; the low-side drive output terminal of the half-bridge MOSFET driver chip U4 is connected to one end of resistor R13; the other end of resistor R13 is connected to one end of resistor R14, and also serves as the third control terminal of the output control circuit; the other end of resistor R14 serves as the fourth control terminal of the output control circuit.

7. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 6, characterized in that, The positive high voltage power supply control circuit includes a resistor R15, a Zener diode D2, a MOSFET transistor Q1, a first filter circuit, and an inductor L1. The source of the MOSFET transistor Q1 serves as the first input terminal of the positive high voltage power supply control circuit and is connected to the first control terminal of the output control circuit. The source of the MOSFET transistor Q1 is also connected to one end of the resistor R15. The other end of the resistor R15 is connected to the gate of the MOSFET transistor Q1. The gate of the MOSFET transistor Q1 serves as the second input terminal of the positive high voltage power supply control circuit and is connected to the second control terminal of the output control circuit. The drain of the MOSFET transistor Q1 is connected to the second power supply. The source of the MOSFET transistor Q1 is connected to one end of the inductor L1 and the cathode of the Zener diode D2. The other end of the inductor L1 is connected to the connection terminal of the first filter circuit and also serves as the output terminal of the positive high voltage power supply control circuit, outputting a positive high voltage drive power supply voltage signal. The ground terminal of the first filter circuit and the anode of the Zener diode D2 are both grounded. The MOSFET transistor Q1 is an N-channel enhancement-mode MOSFET.

8. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 7, characterized in that, The negative high-voltage power supply control circuit includes resistors R17-R18, Zener diode 3, MOSFET transistor Q2, MOSFET transistor Q3, a second filter circuit, and inductor L2. The gate of MOSFET transistor Q3 serves as the third input terminal of the negative high-voltage power supply control circuit and is connected to the third control terminal of the output control circuit. The source of MOSFET transistor Q3 serves as the fourth input terminal of the negative high-voltage power supply control circuit and is connected to the fourth control terminal of the output control circuit. The drain of MOSFET transistor Q3 is connected to one end of resistor R18. The other end of resistor R18 is connected to the gate of MOSFET transistor Q2 and the inductor L2. One end of resistor R17 is connected; the other end of resistor R17 is connected to the source of MOSFET transistor Q2 and also to the first power supply; the drain of MOSFET transistor Q2 is connected to one end of inductor L2 and the cathode of Zener diode D3; the other end of inductor L2 is connected to the connection terminal of the second filter circuit and also serves as the output terminal of the negative high voltage power supply control circuit, outputting the negative high voltage drive power supply voltage signal; the ground terminal of the second filter circuit and the anode of Zener diode D3 are both grounded; wherein, MOSFET transistor Q2 is an N-channel enhancement-mode MOSFET and MOSFET transistor Q3 is a P-channel enhancement-mode MOSFET.

9. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 5, characterized in that, The positive high-voltage drive circuit includes inductor L3, resistors R20~R22, Zener diodes D4 and D5, MOSFET transistors Q4 and Q5, capacitors C17~C25, diodes D6~D13, and transformer T1. One end of inductor L3 serves as the input terminal of the positive high-voltage drive circuit. The other end of inductor L3 is connected to one end of resistor R20, one end of resistor R21, the center tap of transformer T1, and the third power supply. The other end of resistor R20 is connected to the anode of Zener diode D4 and the gate of MOSFET transistor Q5. The cathode of Zener diode D4 is connected to the source of MOSFET transistor Q4, one end of capacitor C17, and one end of the primary winding of transformer T1. The drain of MOSFET transistor Q4 is grounded, and its gate is connected to the other end of resistor R21 and the anode of Zener diode D5. The cathode of Zener diode D5 is connected to the other end of capacitor C17, the drain of MOSFET transistor Q5, and the other end of the primary winding of transformer T1. The source of MOSFET transistor Q5 is grounded. One end of the secondary winding of transformer T1 is connected to one end of capacitor C18; the other end of capacitor C18 is connected to the negative terminal of diode D6, the positive terminal of diode D7, and one end of capacitor C19; the other end of capacitor C19 is connected to the negative terminal of diode D8, the positive terminal of diode D9, and one end of capacitor C20; the other end of capacitor C20 is connected to the negative terminal of diode D10, the positive terminal of diode D11, and one end of capacitor C21; the other end of capacitor C21 is connected to the negative terminal of diode D12 and the positive terminal of diode D13; the other end of the secondary winding of transformer T1 is connected to the positive terminal of diode D6, and one end of capacitor C19. One end of capacitor C22 is connected and also serves as the connection terminal of the positive high-voltage drive circuit; the other end of capacitor C22 is connected to the cathode of diode D7, the anode of diode D8, and one end of capacitor C23; the other end of capacitor C23 is connected to the cathode of diode D9, the anode of diode D10, and one end of capacitor C24; the other end of capacitor C24 is connected to the cathode of diode D11, the anode of diode D12, and one end of capacitor C25; the other end of capacitor C25 is connected to the cathode of diode D13 and one end of resistor R22; the other end of resistor R22 serves as the output terminal of the positive high-voltage drive circuit. Among them, MOSFET transistor Q4 is a P-channel enhancement-mode MOSFET, and MOSFET transistor Q5 is an N-channel enhancement-mode MOSFET.

10. The electrostatic elimination control system based on positive and negative ion self-regulation according to claim 1, characterized in that, The two control signals output by the ion control module correspond to positive ion control signal and negative ion control signal, respectively, and the two control signals are output alternately within a period; wherein, the output time of both control signals is half a period; both control signals are PWM signals; the duty cycle of the positive ion control signal remains unchanged in each period.

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