Control circuit and control method of equipment for preparing dual electrolytic water based on parallel connection of O3 and H2O2

Abstract

The present invention discloses a control circuit and control method for a device for preparing dual electrolytic water based on O3 and H2O2 in parallel. The control circuit is intended to solve the problem of scale deposited on the electrodes of the electrolytic water preparation device after operation, which affects work efficiency and is difficult to clean. The key points of the technical solution are as follows: it includes: a touch key module that interacts with an operator to output a start signal or a shutoff signal in response to the operator's action; a load drive module connected to the touch key module and used to obtain a start signal or a shutoff signal to start or stop the load; and a self-cleaning maintenance module connected to the load drive module and used to control the output electrode of the load drive module to reverse polarity and maintain the normal operation of the load. The present invention monitors the degree of scale in real time through a resistance detection method and dynamically adjusts the polarity reversal frequency, thereby effectively preventing the accumulation of scale. The polarity reversal frequency can also be automatically and adaptively adjusted according to the degree of scale, reducing the impact on the equipment.

Description

Technical Field

[0001] The present invention relates to a control circuit, and more particularly to a control circuit and a control method of a device for preparing double electrolyzed water based on O3 and H2O2 in parallel. Background Art

[0002] In the market, electrolyzed pure water produced by dual electrolysis is widely used in industries such as semiconductors, pharmaceuticals, laboratories, and power generation. For example, in semiconductor manufacturing, ultrapure water is a key raw material for cleaning wafers and preparing chemicals, as any trace impurities can affect chip performance. In the pharmaceutical field, high-purity water is essential for the production of injectables and biologics. In laboratories, ultrapure water is used for precision experiments and analysis. Furthermore, with increasing environmental protection requirements and industrial upgrades, dual electrolysis technology has broad application prospects in water treatment, especially in high-end manufacturing and scientific research, where water quality requirements are extremely high. Market demand continues to grow. In the future, with technological advancements and cost optimization, dual electrolysis technology for producing electrolyzed pure water is expected to achieve large-scale application in even more fields.

[0003] However, due to the ion migration and chemical reaction that will occur during the electrolysis process, in the case of relatively complex water quality, such as water containing rust, hardness exceeding a certain value, organic matter, etc., the drinking water after electrolysis will have a poor taste, an odor, and precipitation, and may even cause the electrolyzer to stop working. This natural defect of the electrolyzer makes it difficult for the electrolyzer to be accepted by more consumers and difficult to promote worldwide.

[0004] Chinese patent publication number CN105923858A discloses a water electrolysis device consisting of an RO membrane and an electrolytic cell. The key technical features are: the RO membrane is located before the electrolytic cell of a dual-inlet structure; the clean water end of the RO membrane is connected to the main water inlet of the electrolytic cell via the electrolytic cell inlet assembly, and the concentrated water end of the RO membrane is connected to the RO membrane pre-inlet assembly, the electrolytic cell's secondary water inlet, and the inlet end of the flushing assembly via the return assembly, the drainage assembly, and the flushing assembly, respectively. When producing alkaline electrolyzed water, the raw water is purified by the RO membrane pre-purification assembly and the RO membrane purification to obtain pure water and concentrated water. The pure water enters the first water inlet of the electrolytic cell through the electrolytic cell inlet assembly, and the concentrated water enters the second water inlet of the electrolytic cell through the drainage assembly. A DC voltage is applied to the electrode plates of the electrolytic cell, where the electrode plate on the first water inlet side of the electrolytic cell is the cathode, and the electrode plate on the second water inlet side of the electrolytic cell is the anode. The following electrolytic reaction occurs in the electrolytic cell:

[0005] Anode side: 2H2O-4e = O2↑ +4H (acidic, oxygen-rich water)

[0006] Cathode side: 4H2O+4e = 2H2↑ + 4OH- (alkaline, hydrogen-rich water)

[0007] Under the action of the DC electric field, some of the mineral ions in the concentrated water (such as positive ions such as calcium, magnesium, iron, sodium, and zinc) pass through the cationic membrane and migrate to the cathode side, which increases the mineral ions in the pure water on the cathode side to a certain extent. Other impurities in the concentrated water, such as bacteria, anions, and residual chlorine, are blocked by the high-density cationic membrane. However, although mineral ions such as calcium and iron in the concentrated water are isolated by the RO membrane, these mineral ions are easily attached to the electrode to form scale under the electrode reaction. When the scale accumulates to a certain extent, it will also affect the electrolysis efficiency. Summary of the Invention

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a control circuit and a control method for a device for preparing dual electrolyzed water based on O3 and H2O2 in parallel.

[0009] The above technical objectives of the present invention are achieved through the following technical solutions: A control circuit for a device for preparing dual electrolytic water based on O3 and H2O2 in parallel, which is used to control the operation of the device for preparing dual electrolytic water based on O3 and H2O2 in parallel, comprising:

[0010] A touch button module interacts with the operator to output a start signal or a shut down signal in response to the operator's action;

[0011] A load driving module, connected to the touch key module, for obtaining a start signal or a shut-down signal to start or stop a load, wherein the load includes an ozone generator;

[0012] The self-cleaning maintenance module is connected to the load driving module and is used to control the output electrode of the load driving module to reverse polarity and maintain the normal operation of the load;

[0013] A voltage-stabilized power supply module is connected to the touch key module, the load drive module, and the self-cleaning maintenance module to output the multi-level drive voltage required to supply the touch key module, the load drive module, and the self-cleaning maintenance module;

[0014] The voltage-stabilized power supply module supplies multi-level drive voltages to power on the load drive module. When the operator operates the touch key module to output a start signal to the load drive module, the ozone generator is activated to electrolyze water to produce ozone and hydrogen peroxide. When the self-cleaning and maintenance module is activated, the output of the self-cleaning and maintenance module is reversed, and the load is driven to operate normally.

[0015] The present invention is further configured to include: a pressure switch module, which is used to obtain the pressure in the pipeline connected to the device, and respond to the increase in pressure in the pipeline to output a channel signal to the load driving module. When the pressure is greater than the set reference pressure, a power-off signal is sent to the load driving module to shut down the device; when the pressure is less than the set reference pressure, a power-on signal is sent to the load driving module to resume device operation.

[0016] The present invention is further configured as follows: the load driving module includes a main control circuit and an inversion switch circuit, the main control circuit is connected to the touch key module and the inversion switch circuit module, the inversion switch circuit includes a positive input switch circuit and an inversion input switch circuit, the positive input switch circuit and the inversion input switch circuit include a photoelectric coupler connected to the main control circuit, the output end of the photoelectric coupler is respectively connected to a power supply electrode and a switching transistor, the collector of the switching transistor is connected in series with a relay switch to the power supply electrode, the emitter of the switching transistor is grounded and electrically connected to the base with a fixed resistor;

[0017] The two control ends of the two relay switches are respectively electrically connected to the power supply or ground at the positive or negative pole of the load to form a power supply circuit. The main control circuit intermittently controls the two relay switches to work alternately to reverse the positive and negative electrodes of the ozone generator.

[0018] The present invention is further configured as follows: the pressure switch module includes a pressure sensor for monitoring pipeline pressure, and the pressure sensor is electrically connected to the main control circuit with a coupler for obtaining a cut-off signal to the main control circuit when the pressure increases to a set threshold.

[0019] The present invention is further configured such that: the pressure sensor is sequentially connected to a voltage divider circuit and a diode clamping circuit via a diode, the voltage divider circuit comprising a voltage divider resistor R7 and a voltage divider resistor R6 connected in series to ground, and the output voltage formula of the voltage divider circuit is: The connection end of the voltage dividing resistor R7 and the voltage dividing resistor R6 is connected to the current limiting resistor R9.

[0020] The present invention is further configured as follows: the diode clamping circuit includes two clamping diodes arranged in series, the two clamping diodes are arranged in series in sequence, and the common end of the two clamping diodes is connected to the current limiting resistor R9 and is electrically connected to the analog-to-digital converter.

[0021] The present invention is further configured as follows: the pressure switch module also includes a switch coupler, the switch coupler is connected to the touch button module, the output end of the switch coupler and the coupler are respectively connected to the main control circuit, one output end of the switch coupler and the coupler is connected to the ground, the other output end of the switch coupler and the coupler are respectively electrically connected to the pull-up resistor and then connected to the power supply, and a number of filter capacitors are connected in parallel between the power supply and the ground.

[0022] The present invention is further configured to include a scale detection module, the scale detection module including a rated resistor connected in series to the load electrode end, the rated resistor being connected in series to the load electrode end and then grounded, the rated resistor and the load electrode end being commonly connected to a detector for detecting voltage or current conditions.

[0023] The present invention is further configured as follows: the main control circuit is connected to the scale detection module, which is used to obtain the scale condition of the load electrode end to adjust the frequency of the reverse electrode descaling and jointly control the self-cleaning maintenance module: first, the scale degree S on the load electrode end is obtained by the scale detection module, , where R X is the resistance after scale accumulation, R0 is the resistance of the load electrode in the non-scale state, and then the scale level threshold T is set. When S>T, the reversal frequency f is increased. , where f min is the set minimum frequency, f max is the maximum frequency set, the inversion frequency f is [f min ,f max ] range, when S≤T, the inversion frequency f is f min .

[0024] The control method of the device for preparing dual electrolytic water based on O3 and H2O2 in parallel adopts a control circuit of the device for preparing dual electrolytic water based on O3 and H2O2 in parallel, and the control steps include:

[0025] Startup: The operator outputs a switch signal through the touch key module. When it is the first interaction, the switch signal as the start signal is output to the main control circuit. The main control circuit simultaneously outputs a pulse signal with a mirror setting to the positive input switch circuit and the reverse input switch circuit. When the positive input switch circuit receives a low-level signal and the reverse input switch circuit receives a high-level signal, the main control circuit starts the load, the ozone generator and the hydrogen peroxide generator start working, and electrolyze water to produce O3 and H2O 2；

[0026] Scale monitoring: After the equipment is started, the main control circuit uses the scale detection module to measure the resistance of the electrodes of the ozone generator and hydrogen peroxide generator, that is, R X Monitor the value in real time and follow Calculate and provide real-time feedback on the scale level on the load electrode end;

[0027] Reversal control: According to the real-time feedback of the scale level S, the main control circuit dynamically adjusts the reversal frequency f. When S≤T, the reversal frequency f is f min , when S>T, increase the inversion frequency f to f max , increase the frequency of the inversion, adjust the k value according to the sensitivity requirements, ;

[0028] Pressure monitoring: After the equipment is started, the pressure conditions in the input pipeline or output pipeline are obtained through the pressure switch module. When the pressure conditions in the input pipeline or output pipeline increase and exceed the set threshold, a low-level cutoff signal is output to the switch coupler, and the main control circuit receives a high-level power-off signal to stop the load drive module. When the pressure conditions in the input pipeline or output pipeline decrease and are less than the set threshold, a high-level path signal is output to the switch coupler to resume the operation of the load drive module.

[0029] In summary, the present invention has the following beneficial effects:

[0030] The resistance detection method is used to monitor the degree of scale in real time and dynamically adjust the reversal frequency, thereby effectively preventing the accumulation of scale. The reversal frequency can be automatically and adaptively adjusted according to the degree of scale to reduce the impact on the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a system block diagram of the present invention;

[0032] Figure 2 This is a circuit diagram of the touch key module in the present invention;

[0033] Figure 3 This is a circuit diagram of the voltage-stabilized power supply module in the present invention;

[0034] Figure 4 1 is a circuit diagram of the main control circuit in the present invention;

[0035] Figure 5 1 is a circuit diagram of a reverse switching circuit in the present invention;

[0036] Figure 6 This is a circuit diagram of the pressure switch module in the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention. Example 1

[0038] like Figure 1 As shown, a control circuit for a device for preparing dual electrolytic water based on O3 and H2O2 in parallel is applied to control the operation of the device for preparing dual electrolytic water based on O3 and H2O2 in parallel, comprising:

[0039] A touch button module interacts with the operator to output a start signal or a shut down signal in response to the operator's action;

[0040] A load driving module is connected to the touch key module and is used to obtain a start signal or a shutdown signal to start or stop the load, and the load includes an ozone generator;

[0041] The self-cleaning maintenance module is connected to the load driving module and is used to control the output electrode of the load driving module to reverse polarity and maintain the normal operation of the load;

[0042] A voltage-stabilized power supply module is connected to the touch key module, the load drive module, and the self-cleaning maintenance module to output the multi-level drive voltage required to supply the touch key module, the load drive module, and the self-cleaning maintenance module;

[0043] The voltage-stabilized power supply module supplies multi-level drive voltages to power on the load drive module. When the operator operates the touch key module to output a start signal to the load drive module, the ozone generator is activated to electrolyze water to produce ozone and hydrogen peroxide. When the self-cleaning and maintenance module is activated, the output of the self-cleaning and maintenance module is reversed, and the load is driven to operate normally.

[0044] like Figure 3 As shown, in this embodiment, the voltage-stabilized power supply module includes a power management chip, which has a VIN terminal, an EN pin, a SW pin, an FB pin and a GND terminal. Specifically, several filter capacitors are arranged between the VIN terminal and the GND terminal of the power management chip, and a Schottky diode is connected in parallel to prevent reverse connection and avoid damage to the power management chip when reverse connection occurs. The VIN terminal and the GND terminal of the power management chip are connected to an energy storage component. In this embodiment, the energy storage component is a lithium battery and is electrically connected to a Type-C interface for connecting to a power adapter and a driver chip of the Type-C interface.

[0045] like Figure 6As shown, it also includes a pressure switch module, which is used to obtain the pressure in the pipeline connected to the device, and respond to the increase in the pressure in the pipeline to output a channel signal to the load driving module. When the pressure is greater than the set reference pressure, a power-off signal is sent to the load driving module to shut down the device. When the pressure is less than the set reference pressure, a power-on signal is sent to the load driving module to resume device operation. In this embodiment, the pressure switch module includes a pressure sensor for monitoring the pipeline pressure. The pressure sensor is electrically connected to the main control circuit with a coupler, and is used to obtain the pressure increase to a set threshold and output a cut-off signal to the main control circuit. The pressure switch module uses a pressure sensor to obtain the pressure in the pipeline through the pressure sensor. However, if the pipeline is blocked by a bend, the electrolysis instrument can be automatically shut down when the pressure is too high. Alternatively, as an application control, the user can also turn on or off the electrolysis instrument through the water on-off switch of the handheld shower during use, thereby achieving flexible control of the working state of the electrolysis instrument through pipeline switch control.

[0046] The pressure sensor is connected to a voltage divider circuit and a diode clamp circuit in sequence through a diode. The voltage divider circuit includes a voltage divider resistor R7 and a voltage divider resistor R6 connected in series to ground. The output voltage formula of the voltage divider circuit is: The connection end of the voltage divider resistor R7 and the voltage divider resistor R6 is connected to the current limiting resistor R9, wherein the diode clamping circuit includes two clamping diodes arranged in series, and the two clamping diodes are arranged in series in sequence. The common end of the two clamping diodes is connected to the current limiting resistor R9 and is electrically connected to the analog-to-digital converter.

[0047] like Figure 6 As shown, the pressure switch module also includes a switch coupler, which is connected to the touch button module. The output end of the switch coupler and the coupler are respectively connected to the main control circuit. One output end of the switch coupler and the coupler is connected to the ground. The other output end of the switch coupler and the coupler is respectively electrically connected to a pull-up resistor and then connected to the power supply. Several filter capacitors are connected in parallel between the power supply and the ground.

[0048] like Figure 4 and Figure 5As shown, the load driving module includes a main control circuit and a reversing switch circuit. The main control circuit is connected to the touch button module and the reversing switch circuit module. The reversing switch circuit includes a positive input switch circuit and a reversing input switch circuit. The positive input switch circuit and the reversing input switch circuit include a photoelectric coupler connected to the main control circuit. The output ends of the photoelectric coupler are respectively connected to the power supply electrode and the switching transistor. The collector of the switching transistor is connected in series with a relay switch to the power supply electrode. The emitter of the switching transistor is grounded and electrically connected to the base with a fixed resistor. Among them, the two control ends of the two relay switches are respectively electrically connected to the power supply or ground at the positive or negative pole of the load to form a power supply circuit. The main control circuit intermittently controls the two relay switches to work alternately to reverse the positive and negative electrodes of the ozone generator.

[0049] The scale detection module also includes a rated resistor connected in series with the load electrode end, the rated resistor is connected in series with the load electrode end and then grounded, the rated resistor and the load electrode end are jointly connected to a detector for detecting voltage or current conditions, the main control circuit is connected to the scale detection module, and is used to obtain the scale condition of the load electrode end to adjust the frequency of reverse pole descaling and jointly control the self-cleaning maintenance module: first, the scale degree S on the load electrode end is obtained through the scale detection module, , where R X is the resistance after scale accumulation, R0 is the resistance of the load electrode in the non-scale state, and then the scale level threshold T is set. When S>T, the reversal frequency f is increased. , where f min is the set minimum frequency, f max is the maximum frequency set, the inversion frequency f is [f min ,f max ] range, when S≤T, the inversion frequency f is f min . Example 2

[0050] The control method of the device for preparing dual electrolytic water based on O3 and H2O2 in parallel adopts the control circuit as described in Example 1, and the control steps include:

[0051] Startup: The operator outputs a switch signal through the touch key module. When it is the first interaction, the switch signal as the start signal is output to the main control circuit. The main control circuit simultaneously outputs a pulse signal with a mirror setting to the positive input switch circuit and the reverse input switch circuit. When the positive input switch circuit receives a low-level signal and the reverse input switch circuit receives a high-level signal, the main control circuit starts the load, the ozone generator and the hydrogen peroxide generator start working, and electrolyze water to produce O3 and H2O 2；

[0052] Scale monitoring: After the equipment is started, the main control circuit uses the scale detection module to measure the resistance of the electrodes of the ozone generator and hydrogen peroxide generator, that is, R X Monitor the value in real time and follow Calculate and provide real-time feedback on the scale level on the load electrode end;

[0053] Reversal control: According to the real-time feedback of the scale level S, the main control circuit dynamically adjusts the reversal frequency f. When S≤T, the reversal frequency f is f min , when S>T, increase the inversion frequency f to f max , increase the frequency of the inversion, adjust the k value according to the sensitivity requirements, ;

[0054] Pressure monitoring: After the equipment is started, the pressure conditions in the input pipeline or output pipeline are obtained through the pressure switch module. When the pressure conditions in the input pipeline or output pipeline increase and exceed the set threshold, a low-level cutoff signal is output to the switch coupler, and the main control circuit receives a high-level power-off signal to stop the load drive module. When the pressure conditions in the input pipeline or output pipeline decrease and are less than the set threshold, a high-level path signal is output to the switch coupler to resume the operation of the load drive module.

[0055] For example, in this embodiment, the resistance of R0 is set to 10Ω, and the scale level threshold T is set to 20%, f min is 0.1Hz, f max The frequency is 10Hz, the value of k is 0.1, and when the scale is less, the resistance R X The value is 11Ω. The scale degree S=((11-10) / 10)*100%=10%, at this time S<T, the reversal frequency is f=fmin=0.1Hz, when the scale is more, the measured resistance R X The resistance is 15Ω, the scaling degree S = ((15-10) / 10)*100% = 50%, the measured S = 50%>20%, and the reversal frequency f = 0.1+0.1×(50−20)=3.1 Hz.

[0056] The resistance detection method is used to monitor the degree of scale in real time and dynamically adjust the reversal frequency, thereby effectively preventing the accumulation of scale. The reversal frequency can be automatically and adaptively adjusted according to the degree of scale to reduce the impact on the equipment.

[0057] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A control circuit for a device for preparing dual electrolytic water based on O3 and H2O2 in parallel, characterized by: Applied to control the operation of dual electrolytic water production equipment for parallel production of O3 and H2O2, including: A touch button module interacts with the operator to output a start signal or a shut down signal in response to the operator's action; A load driving module connected to the touch key module, configured to obtain a start signal or a shutdown signal to start or stop a load, wherein the load includes an ozone generator. The load driving module includes a main control circuit and a reversing switch circuit, wherein the main control circuit is connected to the touch key module and the reversing switch circuit module; The self-cleaning maintenance module is connected to the load driving module and is used to control the output electrode of the load driving module to reverse polarity and maintain the normal operation of the load; A voltage-stabilized power supply module is connected to the touch key module, the load drive module, and the self-cleaning maintenance module to output the multi-level drive voltage required to supply the touch key module, the load drive module, and the self-cleaning maintenance module; The voltage-stabilized power supply module supplies multi-level drive voltages to power on the load drive module. When the operator operates the touch key module to output a start signal to the load drive module, the ozone generator is activated to electrolyze water to produce ozone and hydrogen peroxide. When the self-cleaning and maintenance module is activated, the output of the self-cleaning and maintenance module is reversed, and the load is driven to operate normally. The device also includes a pressure switch module, which is used to obtain the pressure in the pipeline connected to the device, and output a channel signal to the load driving module in response to the increase in pressure in the pipeline. The device is synchronously turned on or off by controlling the pressure in the connected pipeline. The pressure switch module includes a pressure sensor for monitoring the pipeline pressure. The pressure sensor is electrically connected to the main control circuit through a coupler and is used to output a cut-off signal to the main control circuit when the pressure increases to a set threshold. The main control circuit is connected to the scale detection module, which is used to obtain the scale condition of the load electrode end to adjust the frequency of reverse electrode descaling and jointly control the self-cleaning maintenance module: first, the scale degree S on the load electrode end is obtained through the scale detection module, , where R X is the resistance after scale accumulation, R0 is the resistance of the load electrode in the non-scale state, and then the scale level threshold T is set. When S>T, the reversal frequency f is increased. , where f min is the set minimum frequency, f max is the maximum frequency set, the inversion frequency f is [f min ,f max ] range, when S≤T, the inversion frequency f is f min , .

2. The control circuit of the device for preparing dual electrolytic water based on O3 and H2O2 in parallel according to claim 1, characterized in that: When the pressure is greater than the set reference pressure, a power-off signal is sent to the load driving module to shut down the device. When the pressure is less than the set reference pressure, a power-on signal is sent to the load driving module to resume device operation.

3. The control circuit of the device for preparing dual electrolyzed water based on O3 and H2O2 in parallel according to claim 2, characterized in that: The inversion switch circuit includes a positive input switch circuit and an inversion input switch circuit, the positive input switch circuit and the inversion input switch circuit include a photoelectric coupler connected to the main control circuit, the output end of the photoelectric coupler is respectively connected to the power supply electrode and the switching transistor, the collector of the switching transistor is connected in series with a relay switch to the power supply electrode, the emitter of the switching transistor is grounded and the base is electrically connected to a fixed resistor; The two control ends of the two relay switches are respectively electrically connected to the power supply or ground at the positive or negative pole of the load to form a power supply circuit. The main control circuit intermittently controls the two relay switches to work alternately to reverse the positive and negative electrodes of the ozone generator.

4. The control circuit of the device for preparing dual electrolyzed water based on O3 and H2O2 in parallel according to claim 1, characterized in that: The pressure sensor is connected to a voltage divider circuit and a diode clamp circuit in sequence via a diode. The voltage divider circuit includes a voltage divider resistor R7 and a voltage divider resistor R6 connected in series to ground. The output voltage formula of the voltage divider circuit is: The connection end of the voltage dividing resistor R7 and the voltage dividing resistor R6 is connected to the current limiting resistor R9.

5. The control circuit of the device for preparing dual electrolyzed water based on O3 and H2O2 in parallel according to claim 4, characterized in that: The diode clamping circuit includes two clamping diodes arranged in series. The two clamping diodes are arranged in series in sequence. The common end of the two clamping diodes is connected to the current limiting resistor R9 and is electrically connected to the analog-to-digital converter.

6. The control circuit of the device for preparing dual electrolyzed water based on O3 and H2O2 in parallel according to claim 1, characterized in that: The pressure switch module also includes a switch coupler, which is connected to the touch button module. The output end of the switch coupler and the coupler are respectively connected to the main control circuit. One output end of the switch coupler and the coupler is connected to the ground. The other output end of the switch coupler and the coupler is respectively electrically connected to a pull-up resistor and then connected to the power supply. Several filter capacitors are connected in parallel between the power supply and the ground.

7. The control circuit of the device for preparing dual electrolyzed water based on parallel connection of O3 and H2O2 according to claim 3, characterized in that: It also includes a scale detection module, which includes a rated resistor connected in series to the load electrode end, the rated resistor is connected in series to the load electrode end and then grounded, and the rated resistor and the load electrode end are commonly connected to a detector for detecting voltage or current conditions.

8. A control method for a device for preparing dual electrolyzed water based on O3 and H2O2 in parallel, characterized in that: The control circuit of the device for preparing dual electrolyzed water based on O3 and H2O2 in parallel as described in any one of claims 1 to 7 is used, and the control steps include: Startup: The operator outputs a switch signal through the touch key module. When it is the first interaction, the switch signal as the start signal is output to the main control circuit. The main control circuit simultaneously outputs a pulse signal with a mirror setting to the positive input switch circuit and the reverse input switch circuit. When the positive input switch circuit receives a low-level signal and the reverse input switch circuit receives a high-level signal, the main control circuit starts the load, the ozone generator and the hydrogen peroxide generator start working, and electrolyze water to produce O3 and H2O2; Scale monitoring: After the equipment is started, the main control circuit uses the scale detection module to measure the resistance of the electrodes of the ozone generator and hydrogen peroxide generator, that is, R X Monitor the value in real time and follow Calculate and provide real-time feedback on the scale level on the load electrode end; Reversal control: According to the real-time feedback of the scale level S, the main control circuit dynamically adjusts the reversal frequency f. When S≤T, the reversal frequency f is f min , when S>T, increase the inversion frequency f to f max , increase the frequency of the inversion, adjust the k value according to the sensitivity requirements, ; Pressure monitoring: After the equipment is started, the pressure conditions in the input pipeline or output pipeline are obtained through the pressure switch module. When the pressure conditions in the input pipeline or output pipeline increase and exceed the set threshold, a low-level cutoff signal is output to the switch coupler, and the main control circuit receives a high-level power-off signal to stop the load drive module. When the pressure conditions in the input pipeline or output pipeline decrease and are less than the set threshold, a high-level path signal is output to the switch coupler to resume the operation of the load drive module.

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