A pipe descaling device and method based on the electromagnetic wave method of irregular modulation frequency

Abstract

The application discloses a pipeline descaling device and method based on an electromagnetic wave method of irregular modulation frequency, and the method comprises the following steps: generating a cyclically changed basic frequency F0; using a microprocessor ADC to sample a suspended pin to generate a random number and calculate a random variable frequency Delta F; superimposing F0 and Delta F to generate an irregular modulation frequency F; and generating a high-frequency pulse modulation electromagnetic wave according to F to control an electromagnetic wave oscillation circuit, and radiating the electromagnetic wave to water through a pipeline to perform descaling. The device comprises a microprocessor module, an electromagnetic wave oscillation circuit, an indicator lamp and a power module. The electromagnetic wave oscillation circuit is composed of a triode, a capacitor and a magnetic bar to form an RLC oscillation circuit, and one end of a magnetic bar secondary coil is connected to a descaled metal pipeline. The application prevents water ions from producing adaptability through the irregular modulation frequency, improves the long-term stability of the descaling effect, and has the advantages of simple structure, low cost and good descaling effect.

Description

Technical Field

[0001] This invention relates to a pipe descaling device and method based on electromagnetic waves with irregular modulation frequencies, belonging to the field of water treatment technology. Background Technology

[0002] Scale buildup in pipes is a common problem in industrial production and daily life. Traditional descaling methods are mainly divided into two categories: chemical methods and physical methods. Chemical methods dissolve scale by adding scale inhibitors or acid washing solutions, but they have drawbacks such as high cost of chemicals, environmental pollution, and pipe corrosion. Physical methods include magnetic treatment, electric field treatment, ultrasonic treatment, and electromagnetic wave treatment.

[0003] The principle of electromagnetic wave-based pipe descaling is mainly based on the effect of high-frequency alternating electromagnetic fields on ions and water molecules in water, thereby changing the crystallization behavior of scale-forming substances, destroying the structure of existing scale, and achieving multiple effects such as sterilization, algae removal, and corrosion inhibition. This method belongs to non-chemical, non-electrolytic physical water treatment technology, does not change the chemical composition of water, and has the characteristics of being environmentally friendly, energy-saving, and easy to install.

[0004] Existing electromagnetic wave descaling devices typically operate using a fixed frequency or a simple frequency sweep method. However, long-term practical experience has shown that when using fixed-frequency electromagnetic waves, calcium and magnesium plasmas in the water gradually adapt to this frequency, causing the descaling effect to decay over time. Even with a linear frequency sweep method, because the sweep pattern is fixed, ions may still develop a certain degree of adaptation, affecting long-term performance.

[0005] Therefore, how to further improve the long-term effectiveness of electromagnetic wave descaling and prevent ion generation frequency adaptability is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of this invention is to provide a pipe descaling device and method based on an electromagnetic wave method with irregular modulation frequency. By using irregular modulation frequency, calcium and magnesium plasmas in the water cannot adapt, thus maintaining a good descaling effect and solving the problem of the effect decaying over time in the prior art.

[0007] To achieve the above objectives / to solve the above technical problems, the present invention is implemented using the following technical solution.

[0008] On one hand, the present invention provides a pipe descaling device based on an electromagnetic wave method with irregular modulation frequency, comprising: a microprocessor module, an electromagnetic wave oscillation circuit, an indicator light, and a power supply module;

[0009] The microprocessor module has several I / O output terminals and an ADC sampling terminal. Its ADC sampling terminal is connected to a floating pin and is used to acquire the analog signal required to generate random numbers.

[0010] The input terminal of the electromagnetic wave oscillation circuit is connected to the first I / O output terminal of the microprocessor module, and is used to generate high-frequency pulse modulated electromagnetic waves according to the irregular modulation frequency control signal output by the microprocessor module.

[0011] The input terminal of the indicator light is connected to the second I / O output terminal of the microprocessor module to indicate the working status of the device;

[0012] The output terminal of the power module is connected to the power terminal of the microprocessor module and the power terminal of the electromagnetic wave oscillation circuit, respectively, to provide the operating voltage.

[0013] Furthermore, the electromagnetic wave oscillation circuit includes a first current-limiting resistor R1, a second current-limiting resistor R2, a transistor Q, a capacitor C, and a magnetic rod.

[0014] The magnetic rod comprises a rod-shaped ferrite core, a primary coil, and a secondary coil;

[0015] The primary coil is wound on a rod-shaped ferrite core, with its two ends leading out as the first end and the second end;

[0016] The secondary coil is wound on a rod-shaped ferrite core and is electrically isolated from the primary coil. Its first end is electrically connected to the surface of the metal pipe being descaled, making the metal pipe an extended electromagnetic wave transmitting antenna, while the second end is suspended. Utilizing the conductivity of the pipe itself, the high-frequency signal generated by the magnetic rod is directly fed into the pipe, making the entire pipe system a huge and efficient electromagnetic wave radiation source, thereby effectively applying electromagnetic energy to the water inside the pipe.

[0017] The base of the transistor Q is connected to the first I / O output terminal of the microprocessor module through the second current-limiting resistor R2.

[0018] The emitter of transistor Q is connected to the first end of the primary coil of the ferrite rod, and the second end of the primary coil is grounded.

[0019] The collector of transistor Q is connected to the 12V output terminal of the power module and to one end of capacitor C through the first current-limiting resistor R1, while the other end of capacitor C is grounded.

[0020] Furthermore, when the electromagnetic wave oscillation circuit is working, if the control signal output by the microprocessor module is low, the transistor Q is cut off, and the power supply module charges the capacitor C through the first current-limiting resistor R1.

[0021] When the control signal output by the microprocessor module is high, transistor Q is turned on, and capacitor C discharges through the primary coil of the magnetic rod and transistor Q.

[0022] When the circuit parameters satisfy the underdamped condition When R is the DC resistance of the primary coil of the magnetic rod, L is the inductance of the primary coil of the magnetic rod, and C is the capacitance of C, the circuit operates in the zero-input response state of the second-order RLC series circuit, and the current in the primary coil of the magnetic rod exhibits an oscillating decay discharge process.

[0023] Furthermore, the microprocessor module uses an STM32F103C8T6 chip, which contains a 12-bit ADC channel and several GPIO ports, and is connected to a crystal oscillator circuit, a SW download circuit, and a reset circuit; the 12-bit ADC channel is used to sample floating pins to generate random numbers.

[0024] Furthermore, the power supply module includes a first-stage voltage conversion circuit and a second-stage voltage conversion circuit; the first-stage voltage conversion circuit uses an LM2596-5 switching regulator chip to convert a 12V input voltage to a 5V output voltage; the second-stage voltage conversion circuit uses an AMS1117 low-dropout linear regulator to convert a 5V voltage to a 3.3V voltage to power the microprocessor module.

[0025] Furthermore, the indicator light uses a red light-emitting diode, with its anode connected to the second I / O output terminal of the microprocessor module through a current-limiting resistor, and its cathode grounded.

[0026] Secondly, the present invention provides a descaling method for a pipeline descaling device based on the aforementioned irregular modulation frequency electromagnetic wave method, comprising:

[0027] The fundamental frequency F0 and the random variable frequency ΔF are generated using a microprocessor module.

[0028] The fundamental frequency F0 is superimposed with the random variable frequency ΔF to generate the irregular modulation frequency F = F0 + ΔF;

[0029] Based on the irregular modulation frequency F, a control signal is output to the electromagnetic wave oscillation circuit;

[0030] The electromagnetic wave oscillation circuit generates a high-frequency pulse-modulated electromagnetic wave with the oscillation frequency of the electromagnetic wave oscillation circuit current as the carrier frequency and F as the modulation frequency, according to the control signal.

[0031] The pulse-modulated electromagnetic wave is coupled to the water in the pipe being descaled through the secondary coil of the magnetic rod, thereby treating the scale in the pipe.

[0032] Wherein: the method for generating the frequency ΔF of the random variable specifically includes:

[0033] The ADC channel based on the microprocessor module performs multiple consecutive samplings on the floating pin and extracts several low-order data from each sampling result; the extracted multiple data are concatenated to form a random number R between 0 and 65535, and the frequency of the random variable is calculated based on the random number R.

[0034] Furthermore, the basic frequency F0 is specifically defined as follows: within a preset time period, the initial frequency value gradually changes to the boundary frequency value, and then the boundary frequency value gradually changes back to the first frequency value, repeating this cycle.

[0035] Furthermore, the expression for calculating the frequency of the random variable is:

[0036] ΔF = 1 / ((R mod M) × n);

[0037] Where R (mod M) is the remainder of the random number R divided by M, M is the preset modulus, and n is the basic time unit.

[0038] Furthermore, the electromagnetic wave oscillation circuit, according to the control signal, generates a high-frequency pulse-modulated electromagnetic wave with the oscillation frequency of the electromagnetic wave oscillation circuit current as the carrier frequency and F as the modulation frequency, specifically as follows:

[0039] The electromagnetic wave oscillation circuit generates a current oscillation frequency based on the control signal. The high-frequency carrier electromagnetic wave, which is modulated by the irregular modulation frequency F, forms a high-frequency carrier electromagnetic wave with a frequency of F. A high-frequency pulse-modulated electromagnetic wave with a carrier frequency of F and a pulse repetition frequency of F.

[0040] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By setting an irregular modulation frequency, the present invention enables the final output high-frequency pulse modulated electromagnetic wave frequency to cover a wide frequency band and have unpredictable random disturbances; so that the calcium and magnesium plasma in the water cannot adapt to this irregular frequency change, thus maintaining a good descaling effect and solving the problem of the effect decaying over time in the prior art.

[0041] This invention utilizes the built-in ADC channel of the microprocessor module to sample the floating pins and generates true random numbers using environmental noise. No additional hardware cost is required, and the circuit is simple and reliable. It adopts a ferrite rod structure, in which the primary coil and capacitor form an RLC oscillation circuit to generate high-frequency electromagnetic waves. One end of the secondary coil is directly connected to a metal pipe, making the pipe itself an extended transmitting antenna. The electromagnetic waves propagate along the pipe and radiate into the water, resulting in a wide range of action and high efficiency.

[0042] This invention utilizes electromagnetic wave radiation, with the magnetic rod structure confining the magnetic field within the core, reducing energy leakage; the secondary coil is directly connected to the pipe, ensuring good impedance matching; the pipe acts as an antenna, resulting in high radiation efficiency; and it also provides excellent descaling effects for non-closed metal pipes, overcoming the limitations imposed on pipe structure by traditional electromagnetic descaling devices. Attached Figure Description

[0043] Figure 1 This is a block diagram illustrating the principle of the pipe descaling device based on the electromagnetic wave method with irregular modulation frequency according to the present invention.

[0044] Figure 2 This is a schematic diagram of the electromagnetic wave oscillation circuit of the present invention;

[0045] Figure 3 This is a waveform diagram of the current oscillation and discharge process in the primary coil of the magnetic rod of the present invention;

[0046] Figure 4 This is a waveform diagram of the electromagnetic wave with irregular modulation frequency according to the present invention;

[0047] Figure 5 This is a schematic diagram of the 12V-5V voltage conversion circuit of the present invention;

[0048] Figure 6 This is a schematic diagram of the 5V-3.3V voltage conversion circuit of the present invention;

[0049] Figure 7 This is a flowchart of the pipeline descaling method based on electromagnetic waves with irregular modulation frequencies according to the present invention. Detailed Implementation

[0050] It should be noted that:

[0051] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0052] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] Example 1

[0054] like Figure 1 One embodiment shown, such as Figure 1In one embodiment, which is based on the same inventive concept as Embodiment 1, the present invention provides a pipe descaling device based on an electromagnetic wave method with irregular modulation frequency, for implementing the descaling method of Embodiment 1, comprising: a microprocessor module, an electromagnetic wave oscillation circuit, an indicator light and a power supply module;

[0055] The microprocessor module has several I / O output terminals and an ADC sampling terminal. Its ADC sampling terminal is connected to a floating pin and is used to acquire the analog signal required to generate random numbers.

[0056] The input terminal of the electromagnetic wave oscillation circuit is connected to the first I / O output terminal of the microprocessor module, and is used to generate high-frequency pulse modulated electromagnetic waves according to the irregular modulation frequency control signal output by the microprocessor module.

[0057] The input terminal of the indicator light is connected to the second I / O output terminal of the microprocessor module to indicate the working status of the device; the indicator light is a red light-emitting diode, the anode of which is connected to the second I / O output terminal of the microprocessor module through a current-limiting resistor, and the cathode is grounded.

[0058] The output terminal of the power module is connected to the power terminal of the microprocessor module and the power terminal of the electromagnetic wave oscillation circuit, respectively, to provide the operating voltage.

[0059] like Figure 2 As shown, the electromagnetic wave oscillation circuit includes a first current-limiting resistor R1, a second current-limiting resistor R2, a transistor Q, a capacitor C, and a magnetic rod.

[0060] The magnetic rod comprises a rod-shaped ferrite core, a primary coil, and a secondary coil;

[0061] The primary coil is wound on a rod-shaped ferrite core, with its two ends leading out as the first end and the second end;

[0062] The secondary coil is wound on a rod-shaped ferrite core and is electrically isolated from the primary coil. Its first end is electrically connected to the surface of the metal pipe being descaled, so that the metal pipe acts as an extended electromagnetic wave transmitting antenna, and its second end is suspended.

[0063] The base of the transistor Q is connected to the first I / O output terminal of the microprocessor module through the second current-limiting resistor R2.

[0064] The emitter of transistor Q is connected to the first end of the primary coil of the ferrite rod, and the second end of the primary coil is grounded.

[0065] The collector of transistor Q is connected to the 12V output terminal of the power module and to one end of capacitor C through the first current-limiting resistor R1, while the other end of capacitor C is grounded.

[0066] Furthermore, when the electromagnetic wave oscillation circuit is working, if the transistor Q is not conducting, the power module charges the capacitor C through the first current-limiting resistor R1.

[0067] When transistor Q is turned on, capacitor C discharges through the primary coil of a magnetic rod that is equivalent to an inductor L and a resistor R, forming the zero-input response of an RLC second-order series circuit.

[0068] When the circuit parameters of the zero-input response of the RLC second-order series circuit satisfy At that time, the current in the primary coil of the magnetic rod is as follows: Figure 3 The oscillating decay discharge process shown in the diagram induces a discharge in the secondary coil as follows: Figure 4 The high-frequency pulse-modulated electromagnetic wave shown.

[0069] The microprocessor module uses the STM32F103C8T6 chip, which is packaged in an LQFP-48 package. Compared with other microcontroller chips, the STM32F103C8T6 has the advantages of high performance, low cost, and low power consumption. It contains 37 GPIO ports, two 12-bit ADC channels, one CAN bus, one IIC bus, and multiple SPI buses. Its internal clock frequency is up to 64MHz. It is compact and feature-rich, meeting the functional requirements of this system. The microcontroller circuit of the entire descaling method consists of the STM32F103C8T6 chip and its peripheral circuits. The added crystal oscillator circuit is used to improve the clock accuracy of the entire system and provide a more reliable clock source for the microcontroller. The SW download circuit is used to download and debug the embedded software program with the J-link tool. The reset circuit is used to reset the microcontroller. The 12-bit ADC channel is used to sample the floating pins to generate random numbers.

[0070] The power module includes a first-stage voltage conversion circuit and a second-stage voltage conversion circuit; such as Figure 5 As shown, the first-stage voltage conversion circuit uses the LM2596-5 switching regulator chip. The LM2596-5 has a 3A fixed current output capability and a power conversion efficiency of up to 88%. It contains a 150KHz fixed frequency oscillator and a reference regulator with a reference voltage of 1.23V. At the same time, the built-in protection circuit, current limiting, and thermal shutdown circuit make its heat generation during high current output much less than that of similar linear voltage regulator ICs. 12V-5V voltage conversion circuit;

[0071] like Figure 6 As shown, the second-stage voltage conversion circuit uses an AMS1117 low-dropout linear regulator (LDO) to convert 5V to 3.3V. The LDO has the advantages of low cost, low noise, and low quiescent current. It requires few external components and only needs to connect several capacitors in parallel at the input and output terminals.

[0072] Example 2

[0073] like Figure 7 The embodiment shown provides a pipe descaling method based on electromagnetic waves with irregular modulation frequencies, comprising:

[0074] The fundamental frequency F0 and the random variable frequency ΔF are generated through the microprocessor module, specifically including:

[0075] The fundamental frequency F0 is generated using a cyclic frequency sweep method. In this embodiment, F0 gradually changes from 1kHz (initial frequency value) to 100kHz (boundary frequency value) within 10 seconds (preset time period), and then gradually changes from 100kHz back to 1kHz, repeating cyclically. This frequency sweep method ensures that the electromagnetic waves cover a wide frequency range, which can be effective against scale-forming ions and scale layers of different sizes.

[0076] The random variable frequency ΔF is generated through the following steps: The floating pin PA1 is sampled eight times consecutively using the 12-bit ADC channel inside the microprocessor module; the last two bits (the lowest two bits) of each sampling result are extracted; the eight extracted two-bit data (a total of 16 bits) are concatenated to form a 16-bit true random number R between 0 and 65535; the random variable frequency is calculated according to the formula ΔF = 1 / ((R mod M) × n), where R mod M is the remainder of the random number R divided by the preset modulus M, and n is the basic time unit (in microseconds); the floating pin is affected by environmental noise, and the lower bits of its ADC sampling value have strong randomness, which can be used as a random number source;

[0077] The microprocessor module regenerates random numbers R at fixed time intervals during each sweep cycle of the fundamental frequency F0 and calculates a new ΔF.

[0078] The fundamental frequency F0 is superimposed with the random variable frequency ΔF to generate the irregular modulation frequency F = F0 + ΔF;

[0079] The microprocessor module outputs a corresponding PWM control signal from its first I / O output terminal to the electromagnetic wave oscillation circuit based on the synthesized irregular modulation frequency F, thereby controlling the electromagnetic wave oscillation circuit to generate high-frequency pulse modulation electromagnetic waves and control the turn-on and turn-off frequency of the transistor Q.

[0080] The electromagnetic wave oscillation circuit generates a current oscillation frequency based on the control signal. A high-frequency pulse-modulated electromagnetic wave, wherein the high-frequency carrier electromagnetic wave is modulated by the irregular modulation frequency F, forming a high-frequency pulse-modulated electromagnetic wave. A high-frequency pulse-modulated electromagnetic wave with a carrier frequency and a pulse repetition frequency of F;

[0081] The high-frequency pulse-modulated electromagnetic wave is coupled into the water inside the pipe to be descaled, thereby treating the scale inside the pipe.

[0082] The final output frequency pulse modulated electromagnetic wave is an irregular waveform with random perturbations superimposed on a regular frequency sweep. This high-frequency carrier fc is determined by the RLC circuit parameters to ensure that the electromagnetic wave can effectively penetrate the water medium and scale layer. The irregular modulation frequency F is generated by the microprocessor to prevent ion adaptation. The combination of the two ensures both the depth of action and the long-term effect.

[0083] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A pipe descaling device based on an electromagnetic wave method with irregular modulation frequency, characterized in that, include: Microprocessor module, electromagnetic wave oscillation circuit, indicator lights and power supply module; The microprocessor module has several I / O output terminals and an ADC sampling terminal. Its ADC sampling terminal is connected to a floating pin and is used to acquire the analog signal required to generate random numbers. The input terminal of the electromagnetic wave oscillation circuit is connected to the first I / O output terminal of the microprocessor module, and is used to generate high-frequency pulse modulated electromagnetic waves according to the irregular modulation frequency control signal output by the microprocessor module. The input terminal of the indicator light is connected to the second I / O output terminal of the microprocessor module to indicate the working status of the device; The output terminal of the power module is connected to the power terminal of the microprocessor module and the power terminal of the electromagnetic wave oscillation circuit, respectively, to provide the operating voltage.

2. The pipe descaling device based on the electromagnetic wave method with irregular modulation frequency according to claim 1, characterized in that, The electromagnetic wave oscillation circuit includes a first current-limiting resistor R1, a second current-limiting resistor R2, a transistor Q, a capacitor C, and a magnetic rod. The magnetic rod comprises a rod-shaped ferrite core, a primary coil, and a secondary coil; The primary coil is wound on a rod-shaped ferrite core, with its two ends leading out as the first end and the second end; The secondary coil is wound on a rod-shaped ferrite core and is electrically isolated from the primary coil. Its first end is electrically connected to the surface of the metal pipe being descaled, so that the metal pipe acts as an extended electromagnetic wave transmitting antenna, and its second end is suspended. The base of the transistor Q is connected to the first I / O output terminal of the microprocessor module through the second current-limiting resistor R2. The emitter of transistor Q is connected to the first end of the primary coil of the ferrite rod, and the second end of the primary coil is grounded. The collector of transistor Q is connected to the 12V output terminal of the power module and to one end of capacitor C through the first current-limiting resistor R1, while the other end of capacitor C is grounded.

3. The pipeline descaling device based on the electromagnetic wave method with irregular modulation frequency according to claim 1, characterized in that, When the electromagnetic wave oscillation circuit is working, when the control signal output by the microprocessor module is low, the transistor Q is cut off, and the power supply module charges the capacitor C through the first current-limiting resistor R1. When the control signal output by the microprocessor module is high, transistor Q is turned on, and capacitor C discharges through the primary coil of the magnetic rod and transistor Q. When the circuit parameters satisfy the underdamped condition At this time, the circuit operates in the zero-input response state of a second-order RLC series circuit, and the current in the primary coil of the magnetic rod undergoes an oscillating decay discharge process. Where: R is the DC resistance of the primary coil of the magnetic rod, L is the inductance of the primary coil of the magnetic rod, and C is the capacitance C.

4. The pipe descaling device based on the electromagnetic wave method with irregular modulation frequency according to claim 1, characterized in that, The microprocessor module uses an STM32F103C8T6 chip, which contains a 12-bit ADC channel and several GPIO ports, and is connected to a crystal oscillator circuit, a SW download circuit, and a reset circuit; the 12-bit ADC channel is used to sample floating pins to generate random numbers.

5. The pipeline descaling device based on the electromagnetic wave method with irregular modulation frequency according to claim 1, characterized in that, The power supply module includes a first-stage voltage conversion circuit and a second-stage voltage conversion circuit. The first-stage voltage conversion circuit uses an LM2596-5 switching regulator chip to convert a 12V input voltage to a 5V output voltage. The second-stage voltage conversion circuit uses an AMS1117 low-dropout linear regulator to convert the 5V voltage to a 3.3V voltage to power the microprocessor module.

6. The pipe descaling device based on the electromagnetic wave method with irregular modulation frequency according to claim 1, characterized in that, The indicator light uses a red LED, with its anode connected to the second I / O output terminal of the microprocessor module through a current-limiting resistor, and its cathode grounded.

7. A descaling method for a pipeline descaling device based on the irregular modulation frequency electromagnetic wave method according to any one of claims 1 to 6, characterized in that, include: The fundamental frequency F0 and the random variable frequency ΔF are generated using a microprocessor module. The fundamental frequency F0 is superimposed with the random variable frequency ΔF to generate the irregular modulation frequency F = F0 + ΔF; Based on the irregular modulation frequency F, a control signal is output to the electromagnetic wave oscillation circuit; The electromagnetic wave oscillation circuit generates a high-frequency pulse-modulated electromagnetic wave with the oscillation frequency of the electromagnetic wave oscillation circuit current as the carrier frequency and F as the modulation frequency, according to the control signal. The high-frequency pulse-modulated electromagnetic wave is coupled into the water inside the pipe to be descaled, thereby treating the scale inside the pipe. Wherein: the method for generating the frequency ΔF of the random variable specifically includes: The ADC channel based on the microprocessor module continuously samples the floating pin multiple times and extracts several low-order data from each sampling result; the extracted multiple data are concatenated to form a random number R between 0 and 65535, and the frequency of the random variable is calculated based on the random number R.

8. The descaling method according to claim 7, characterized in that, The fundamental frequency F0 is specifically defined as follows: within a preset time period, the initial frequency value gradually changes to the boundary frequency value, and then the boundary frequency value gradually changes back to the first frequency value, repeating this cycle.

9. The descaling method according to claim 7, characterized in that, The expression for calculating the frequency of the random variable is: ΔF = 1 / ((R mod M) × n); Where R (mod M) is the remainder of the random number R divided by M, M is the preset modulus, and n is the basic time unit.

10. The descaling method according to claim 7, characterized in that, The electromagnetic wave oscillation circuit generates a high-frequency pulse-modulated electromagnetic wave based on the control signal, with the oscillation frequency of the electromagnetic wave oscillation circuit current as the carrier frequency and F as the modulation frequency. Specifically: The electromagnetic wave oscillation circuit generates a current oscillation frequency based on the control signal. The high-frequency carrier electromagnetic wave, which is modulated by the irregular modulation frequency F, forms a high-frequency carrier electromagnetic wave with a frequency of F. A high-frequency pulse-modulated electromagnetic wave with a carrier frequency of F and a pulse repetition frequency of F.

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