Pulse frequency control device

Abstract

The utility model provides a pulse frequency control device, and belongs to the field of pulse signal control. The pulse frequency control device comprises an acquisition module, a signal processing module, a central control module, a pulse control module and a light source module, the acquisition module is connected with the signal processing module, the signal processing module is connected with the central control module, the central control module is connected with the pulse control module, and the pulse control module is connected with the light source module. Different pulse signals can be selected according to the skin information of the user, individual requirements are met, and pertinence and effectiveness of the treatment process are ensured. Meanwhile, related parameters are dynamically adjusted according to changes of environment information, the accuracy of the emitted pulse signals is prevented from being reduced under the influence of the environment, and the anti-interference performance of the pulse frequency control process is enhanced. And the pulse control module can accurately control the frequency and other characteristics of the pulse signal to meet user requirements.

Description

Technical Field

[0001] The present disclosure relates to the field of pulse signal control, and particularly to a pulse frequency control device. Background Art

[0002] With the progress of technology, people increasingly rely on electronic and optical technologies to treat various skin problems, and intense pulsed light therapy devices are one of them. The intense pulsed light therapy device uses high-energy pulsed light to irradiate the skin, and destroys diseased tissues or stimulates the regeneration of skin cells through the principle of photo-thermal effect, so as to achieve the treatment purpose. The pulse frequency control device is a key component to ensure that these pulsed lights have specific frequencies and pulse widths. However, due to the characteristics of electronic components and the influence of the external environment, the pulse frequency control device may experience problems of decreased accuracy and stability during long-term operation. This may cause deviations in the frequency and pulse width of the pulsed light, affecting the treatment effect. Summary of the Utility Model

[0003] Embodiments of the present disclosure provide a pulse frequency control device to solve the problems of poor anti-interference ability, low accuracy, and difficulty in meeting actual requirements of pulse frequency control.

[0004] Embodiments of the present disclosure provide a pulse frequency control device, including: an acquisition module, a signal processing module, a central control module, a pulse control module, and a light source module;

[0005] The acquisition module is connected to the signal processing module, and the acquisition module is configured to acquire user skin information and environmental parameter information;

[0006] The signal processing module is connected to the central control module;

[0007] The central control module is connected to the pulse control module, and the pulse control module is configured to generate a pulse signal with a specific frequency;

[0008] The pulse control module is connected to the light source module, and the light source module is configured to generate intense pulsed light.

[0009] In an exemplary embodiment of the present disclosure, the pulse control module includes: a switch SW1, a NOT gate U1, a NOT gate U2, an amplifier U3, a triode Q1, and a triode Q2;

[0010] The central control module is connected to the first end of the switch SW1, the second end of the switch SW1 is connected to the input end of the NOT gate U1, and the output end of the NOT gate U1 is connected to the input end of the NOT gate U2;

[0011] The output end of the NOT gate U2 is connected to the non-inverting input end of the amplifier U3, and the inverting input end of the amplifier U3 is used to receive a reference voltage;

[0012] The output terminals of the amplifier U3 are respectively connected to the bases of the triodes Q1 and Q2. The collector of the triode Q1 is used to connect to the external power supply VCC. The emitter of the triode Q1 is connected to the emitter of the triode Q2. The collector of the triode Q2 is used to be grounded;

[0013] The emitter of the triode Q1 is connected to the light source module.

[0014] In an exemplary embodiment of the present disclosure, the pulse control module further includes: a pulse generating unit;

[0015] The pulse generating unit is connected to the pulse control module.

[0016] In an exemplary embodiment of the present disclosure, the pulse generating unit includes: a switch SW2, a timer U4, a resistor R1, a rheostat RP1, a capacitor C1, and a capacitor C2;

[0017] The first end of the switch SW2 is connected to the input terminal of the NOT gate U1, and the second end of the switch SW2 is connected to the voltage output terminal of the timer U4;

[0018] The voltage control terminal of the timer U4 is connected to the first end of the capacitor C1, and the second end of the capacitor C1 is grounded;

[0019] The discharge terminal of the timer U4 is respectively connected to the first end of the resistor R1 and the first end of the rheostat RP1;

[0020] The high-level trigger terminal of the timer U4 is connected to the low-level trigger terminal of the timer U4;

[0021] The low-level trigger terminal of the timer U4 is respectively connected to the second end of the rheostat RP1 and the first end of the capacitor C2, and the second end of the capacitor C2 is grounded;

[0022] The direct reset terminal and the direct power supply terminal of the timer U4 are both used to connect to the external power supply VDD;

[0023] The ground terminal of the timer U4 is grounded;

[0024] The first end of the resistor R1 is used to connect to the external power supply VDD.

[0025] In an exemplary embodiment of the present disclosure, the acquisition module includes: a signal acquisition unit and an environment acquisition unit;

[0026] The signal acquisition unit is connected to the signal processing module; the signal acquisition unit is configured to acquire user skin information;

[0027] The environment acquisition unit is connected to the central control module; the environment acquisition unit is configured to acquire environment parameter information.

[0028] In an exemplary embodiment of the present disclosure, a pulse frequency control device further includes: a filter module;

[0029] The filter module is connected to the light source module.

[0030] In an exemplary embodiment of the present disclosure, a pulse frequency control device further includes: a refrigeration module;

[0031] The refrigeration module is connected to the central control module.

[0032] In an exemplary embodiment of the present disclosure, a pulse frequency control device further includes: a pulse compensation module;

[0033] The pulse compensation module is respectively connected to the central control module and the light source module.

[0034] The beneficial effects of a pulse frequency control device provided by an embodiment of the present disclosure are as follows: Through the real-time collection of the user's skin information by the collection module, more accurate treatment data is obtained, thereby ensuring the pertinence and effectiveness of the treatment process. The pulse control module can accurately control the characteristics such as the frequency of the pulse signal to meet the user's needs. At the same time, through the real-time capture of the environmental information by the collection module of this device, the parameters can be dynamically adjusted according to the actual situation of the treatment environment, improving the anti-interference and accuracy of the pulse frequency control, and ensuring that the treatment process is more accurate and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 is a schematic structural diagram of a pulse frequency control device provided by an embodiment of the present disclosure;

[0037] Figure 2 is a schematic structural diagram of another pulse frequency control device provided by an embodiment of the present disclosure;

[0038] Figure 3 is a schematic structural diagram of yet another pulse frequency control device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] To enable those skilled in the art to better understand this solution, the following will clearly describe the technical solution in the embodiments of this solution in conjunction with the accompanying drawings in the embodiments of this solution. Obviously, the described embodiments are part of the embodiments of this solution, rather than all of the embodiments. Based on the embodiments in this solution, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this solution.

[0040] The terms "including" and any other variations in the description and claims of this solution, as well as in the above-mentioned accompanying drawings, mean "including but not limited to", intending to cover non-exclusive inclusion and not limited to the examples listed in the text. In addition, terms such as "first" and "second" are used to distinguish different objects, rather than to describe a specific order.

[0041] The following will describe the implementation of this disclosure in detail in conjunction with specific accompanying drawings:

[0042] Figure 1 It is a schematic structural diagram of a pulse frequency control device provided for an embodiment of this disclosure. Refer to Figure 1 This pulse frequency control device includes an acquisition module 101, a signal processing module 102, a central control module 103, a pulse control module 104, and a light source module 105.

[0043] The acquisition module 101 is connected to the signal processing module 102, and the acquisition module 101 is configured to acquire user skin information and environmental parameter information.

[0044] The signal processing module 102 is connected to the central control module 103.

[0045] The central control module 103 is connected to the pulse control module 104, and the pulse control module 104 is configured to generate a pulse signal with a specific frequency.

[0046] The pulse control module 104 is connected to the light source module 105, and the light source module 105 is configured to generate intense pulsed light.

[0047] In this embodiment, the acquisition module 101 is connected to the signal processing module 102, and the acquisition module 101 is configured to acquire user skin information and environmental parameter information. The acquisition module 101 can acquire user skin information and environmental parameter information in real time. User skin information may include skin type, skin color depth, skin texture, and skin condition, and these information can be obtained by means such as optical sensors, image recognition technology, or the user inputting relevant information at the operation end. Environmental parameter information may include the light intensity, temperature, and humidity of the treatment area, etc., and these information can be transmitted to the signal processing module 102 for analysis to determine the optimal parameters for this user and the current environment, such as pulse frequency, pulse width, and time.

[0048] Exemplarily, a customer needs to undergo skin whitening treatment and uses an intense pulsed light therapy instrument equipped with a pulse frequency control device for treatment. The acquisition module 101 can collect skin information of the patient in real time, such as the color, texture, humidity, temperature of the skin, as well as environmental parameter information such as the temperature, humidity, and light intensity in the room. For example, by using skin color recognition technology based on the Hue-Saturation-Value (HSV) color space or the Red-Green-Blue (RGB) color space, it is analyzed that the customer has yellowish-brown skin with melanin deposition. Or by training a Convolutional Neural Network (CNN) model, it can learn and identify the characteristics of various skin conditions, such as acne, wrinkles, and uneven skin tone. Through an image classification algorithm, the input skin image can be automatically classified to identify the skin state, such as dry skin, oily skin, and sensitive skin.

[0049] In this embodiment, the signal processing module 102 is connected to the central control module 103. The central control module 103 is connected to the pulse control module 104, and the pulse control module 104 is configured to generate a pulse signal with a specific frequency.

[0050] Exemplarily, the signal processing module 102 transmits the processed signal to the central control module 103. The central control module 103 can calculate the relevant parameters of the required pulse signal based on this signal, generate a pulse signal, and at the same time send a control instruction to the pulse control module 104. The pulse control module 104 further processes the received pulse signal according to the control instruction to generate a pulse signal with a specific frequency and width.

[0051] In this embodiment, the pulse control module 104 is connected to the light source module 105, and the light source module 105 is configured to generate intense pulsed light. The pulse control module 104 can transmit a specific pulse signal to the light source module 105 to drive the light source module 105 to generate the corresponding intense pulsed light.

[0052] In this embodiment, through the real-time acquisition of the user's skin information by the acquisition module 101, more accurate treatment data is obtained, thus ensuring the pertinence and effectiveness of the treatment process. The pulse control module 104 can accurately control the characteristics of the pulse signal, such as the frequency, to meet the user's needs. At the same time, through the real-time capture of the environmental information by the acquisition module 101 of this device, the parameters can be dynamically adjusted according to the actual situation of the treatment environment, improving the anti-interference ability and accuracy of the pulse frequency control, and ensuring that the treatment process is more accurate and safe.

[0053] Such as Figure 2As shown, in an embodiment of the present disclosure, the pulse control module 104 includes: a switch SW1, a NOT gate U1, a NOT gate U2, an amplifier U3, a triode Q1, and a triode Q2.

[0054] The central control module 103 is connected to the first end of the switch SW1. The second end of the switch SW1 is connected to the input end of the NOT gate U1, and the output end of the NOT gate U1 is connected to the input end of the NOT gate U2.

[0055] The output end of the NOT gate U2 is connected to the non-inverting input end of the amplifier U3, and the inverting input end of the amplifier U3 is used to receive a reference voltage.

[0056] The output end of the amplifier U3 is respectively connected to the bases of the triode Q1 and the triode Q2. The collector of the triode Q1 is used to connect to an external power supply VCC. The emitter of the triode Q1 is connected to the emitter of the triode Q2, and the collector of the triode Q2 is used to connect to the ground.

[0057] The emitter of the triode Q1 is connected to the light source module 105.

[0058] In this embodiment, the central control module 103 controls the start and stop of the pulse control module 104 by controlling the on-off of the switch SW1. When the switch SW1 is closed, the circuit starts to work. When the switch SW1 is opened, the circuit stops working.

[0059] In this embodiment, when the switch SW1 is closed, an electrical signal is transmitted from the first end of SW1 to the input end of the NOT gate U1. The NOT gate U1 is a logic inverter that inverts the input signal and outputs it to the input end of the NOT gate U2. The NOT gate U2 is also a logic inverter that inverts the signal again. However, due to the two inversions, the final output signal is the same as the original signal of SW1. This part of the circuit constitutes a buffer to buffer the pulse signal to ensure the accuracy of the pulse signal during transmission.

[0060] In this embodiment, the output signal of the NOT gate U2 is connected to the non-inverting input end of the amplifier U3. The amplifier U3 is a voltage comparator, and its inverting input end is connected to a reference voltage. When the voltage at the non-inverting input end is higher than the reference voltage at the inverting input end, the amplifier U3 outputs a high level. Conversely, it outputs a low level. In this way, the amplifier U3 generates a corresponding output signal according to the comparison result between the input signal and the reference voltage.

[0061] In this embodiment, the output signal of the amplifier U3 is respectively connected to the bases of the triodes Q1 and Q2. When the amplifier U3 outputs a high level, the triode Q1 conducts and Q2 cuts off. When the amplifier U3 outputs a low level, the triode Q1 cuts off and Q2 conducts. This part of the circuit constitutes a drive circuit to drive the light source module 105 to work and emit a strong pulsed light.

[0062] Exemplarily, the device is used in a household intense pulsed light beauty instrument for removing skin pigmentation or acne. The user places the beauty instrument on the skin to be treated and presses the start button. The start button is connected to the central control module 103 to control the closing of the switch SW1. When the switch SW1 is closed, the pulse control module 104 starts to work. The NOT gates U1 and U2 perform logic conversion, and the amplifier U3 outputs a corresponding signal according to the comparison result between the input signal and the reference voltage. This signal drives the conduction and cutoff of the triodes Q1 and Q2, and at the same time drives the light source module 105 to work, generating intense pulsed light to irradiate the skin. Parameters such as the frequency, pulse width, and energy of the pulsed light can be precisely controlled by adjusting parameters such as the reference voltage and the gain of the amplifier U3. When the preset treatment time is reached or the user manually stops, the central control module 103 disconnects the switch SW1, the pulse control module 104 stops working, and the light source module 105 is powered off and stops generating intense pulsed light. The user can remove the beauty instrument from the skin to complete the entire treatment process.

[0063] Exemplarily, the user can set appropriate parameters, such as pulse frequency, treatment time, and pulse width, according to the instructions of the beauty instrument or the suggestions of professionals for multiple irradiation treatments. Or, the device can analyze the user's skin information according to the central control module 103, calculate the required pulse signal parameters, and control the pulse control module 104 to automatically adjust parameters such as the frequency of the pulse signal.

[0064] This embodiment can ensure the stability and reliability of the signal through the logic conversion of the NOT gates U1 and U2, realize signal buffering, and effectively avoid misoperations caused by signal interference. The introduction of the amplifier U3 enables the module to precisely control the amplitude of the output signal according to the reference voltage, and further realizes the precise adjustment of the output power of the light source module 105. Finally, the series structure of the triodes Q1 and Q2 not only simplifies the circuit design but also improves the stability and reliability of the circuit.

[0065] As Figure 2 shown, in an embodiment of the present disclosure, the pulse control module 104 further includes: a pulse generation unit 106.

[0066] The pulse generation unit 106 is connected to the pulse control module 104.

[0067] In this embodiment, the pulse generation unit 106 is configured to control the emission of a pulsed signal with a specific frequency according to manual adjustment by the user and output it to the pulse frequency control module for further processing.

[0068] This embodiment can meet the personalized requirements of users, omit the information collection and processing process, emit a pulsed signal with a specific frequency at any time, and enhance the flexibility and personalization of the therapeutic instrument.

[0069] In one embodiment of the present disclosure, the pulse generating unit 106 includes: a switch SW2, a timer U4, a resistor R1, a rheostat RP1, a capacitor C1, and a capacitor C2.

[0070] The first end of the switch SW2 is connected to the input end of the NOT gate U1, and the second end of the switch SW2 is connected to the voltage output end of the timer U4.

[0071] The voltage control end of the timer U4 is connected to the first end of the capacitor C1, and the second end of the capacitor C1 is grounded.

[0072] The discharge end of the timer U4 is respectively connected to the first end of the resistor R1 and the first end of the rheostat RP1.

[0073] The high-level trigger end of the timer U4 is connected to the low-level trigger end of the timer U4.

[0074] The low-level trigger end of the timer U4 is respectively connected to the second end of the rheostat RP1 and the first end of the capacitor C2, and the second end of the capacitor C2 is grounded.

[0075] The direct reset end and the direct power supply end of the timer U4 are both used to connect to the external power supply VDD.

[0076] The ground end of the timer U4 is grounded.

[0077] The first end of the resistor R1 is used to connect to the external power supply VDD.

[0078] In this embodiment, the working principle of the pulse generating unit 106 is based on the RC (resistor-capacitor) charge and discharge cycle of the timer U4. When the switch SW2 is closed, the external power supply VDD charges the capacitor C1 through the resistor R1. As the voltage on the capacitor C1 gradually increases, when it reaches the threshold voltage of the timer U4, the internal logic of the timer U4 is triggered, causing its output end to change from a low level to a high level state. During the high level, the capacitor C2 starts to discharge through the rheostat RP1 and the resistor R1. The rheostat RP1 allows the user to change the discharge time by adjusting its resistance value, thereby controlling the width or frequency of the pulse signal. When the voltage of the capacitor C2 drops to another threshold voltage of the timer U4, the output end of the timer U4 changes from a high level to a low level state, and at the same time, the capacitor C1 starts to charge again, preparing for the next charge and discharge cycle. Since the high-level trigger end and the low-level trigger end of the timer U4 are connected together to form a self-triggering circuit, the pulse signal can be continuously generated. The direct reset end and the direct power supply end are connected to the external power supply VDD to ensure the stable power supply and normal operation of the timer U4.

[0079] Exemplarily, the user can adjust the rheostat RP1 on the device to change the frequency of the pulse signal. For example, for the treatment of skin pigmentation, pulsed light with a higher frequency can be used to accelerate the decomposition and metabolism of pigments. At this time, the user can reduce the resistance value of the rheostat RP1, so that the discharge time of the capacitor C2 is shortened and the pulse frequency increases.

[0080] Exemplarily, for some sensitive skin or situations that require more gentle treatment, the user can use pulsed light with a lower frequency. At this time, the user can increase the resistance value of the rheostat RP1, so that the discharge time of the capacitor C2 is extended and the pulse frequency decreases.

[0081] This embodiment can provide a flexible and adjustable pulse control scheme for the intense pulsed light therapy device, ensuring that the treatment process can accurately match the individual differences and treatment needs of patients.

[0082] As Figure 3 shown, in an embodiment of the present disclosure, the acquisition module 101 includes: a signal acquisition unit 107 and an environment acquisition unit 108.

[0083] The signal acquisition unit 107 is connected to the signal processing module 102. The signal acquisition unit 107 is configured to acquire user skin information.

[0084] The environment acquisition unit 108 is connected to the central control module 103. The environment acquisition unit 108 is configured to acquire environmental parameter information.

[0085] In this embodiment, the signal acquisition unit 107 is connected to the signal processing module 102. The signal acquisition unit 107 is configured to acquire user skin information. The signal acquisition unit 107 may include a skin analyzer and a humidity sensor.

[0086] In this embodiment, the environment acquisition unit 108 is connected to the central control module 103. The environment acquisition unit 108 is configured to acquire environmental parameter information. The environment acquisition unit 108 may include a temperature sensor, a humidity sensor, and a light sensor.

[0087] This embodiment can acquire user skin information and environmental parameter information, and can adjust the treatment parameters and working status in real time according to this information, so as to ensure the accuracy and stability of the treatment effect. This is of great significance for improving the performance of the therapy device and enhancing the user experience.

[0088] As Figure 3 shown, in an embodiment of the present disclosure, a pulse frequency control device further includes: a filter module 109.

[0089] The filter module 109 is connected to the light source module 105.

[0090] In this embodiment, the light source module 105 is configured to generate intense pulsed light and can adjust its brightness and color as needed. The filter module 109 is connected to the light source module 105 and can screen and filter light. The filter module 109 may include a filter that selectively allows light of a specific frequency or wavelength band to pass through while blocking light of other frequencies. By adjusting the parameters of the filter module 109, precise control of the light output from the light source can be achieved.

[0091] Exemplarily, in the field of laser engraving, precise control of the frequency and intensity of the laser beam is required to ensure the accuracy and effect of engraving. By using a pulse frequency control device, the frequency and intensity of the laser beam can be adjusted according to different engraving requirements. At the same time, the filter module 109 can filter out unwanted wavelengths, improving the purity and energy density of the laser beam, thereby achieving a more precise and efficient engraving effect.

[0092] In this embodiment, the filter module 109 can remove unwanted wavelengths, improving the purity and energy density of the light source. This helps to achieve deeper penetration and more efficient energy transfer during the treatment process, thereby enhancing the treatment effect. The filter module 109 can block wavelengths that are not beneficial to the treatment or may even cause side effects, reducing the potential risks during the treatment process.

[0093] As Figure 3 shown, in an embodiment of the present disclosure, a pulse frequency control device further includes: a refrigeration module 110.

[0094] The refrigeration module 110 is connected to the central control module 103.

[0095] In this embodiment, the refrigeration module 110 can receive control instructions from the central control module 103 and adjust the operating state of the refrigeration device according to the operating state of the therapeutic apparatus and the temperature monitoring data. When the therapeutic apparatus operates at high intensity and high frequency, its internal components may generate relatively high heat, affecting the stability of the device and the treatment effect. At this time, the refrigeration module 110 is activated, and heat is exported from the inside of the device by circulating the refrigerant or opening the ventilation opening, maintaining the device within an appropriate operating temperature range.

[0096] Exemplarily, during high-intensity light therapy treatments such as facial wrinkle removal, whitening, or pigmentation removal, the therapeutic apparatus will emit high-energy pulsed light. While these pulsed lights act on the skin, they also generate a certain amount of heat. If the heat cannot be exported in time, it may cause the internal components of the therapeutic apparatus to overheat, affecting the transmission of the pulse signal, and further affecting the treatment effect or even damaging the device. At this time, the refrigeration module 110 can activate the refrigeration device according to the instructions of the central control module 103 and export the heat.

[0097] This embodiment can automatically adjust the device temperature, reducing the risk of component damage due to overheating and improving the anti-interference ability during the pulse frequency control process.

[0098] As Figure 3 shown, in an embodiment of the present disclosure, a pulse frequency control device further includes: a pulse compensation module 111.

[0099] The pulse compensation module 111 is respectively connected to the central control module 103 and the light source module 105.

[0100] In this embodiment, the central control module 103 can transmit the required pulse frequency and other parameter information to the pulse compensation module 111. After receiving this information, the pulse compensation module 111 can activate the internal compensation mechanism, detect the pulse frequency output by the current light source module 105, and compare it with the preset standard frequency. If a deviation is detected, the pulse compensation module 111 can use the built-in algorithm and calibration mechanism to adjust the pulse frequency of the light source module 105 to ensure that its output frequency is consistent with the preset value.

[0101] In this embodiment, during laser freckle removal treatment, the accuracy and stability of the pulse frequency directly affect the treatment effect. By integrating the pulse compensation module 111, the medical laser device can detect and adjust the output frequency of the laser pulse in real time to ensure that it is consistent with the preset treatment parameters. This can not only improve the treatment accuracy but also effectively reduce the discomfort during the treatment process, bringing a better treatment experience to patients.

[0102] The above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. A pulse frequency control device, characterized in that, Including: A collection module, a signal processing module, a central control module, a pulse control module, and a light source module; The collection module is connected to the signal processing module, and the collection module is configured to collect user skin information and environmental parameter information; The signal processing module is connected to the central control module; The central control module is connected to the pulse control module, and the pulse control module is configured to generate a pulse signal with a specific frequency; The pulse control module is connected to the light source module, and the light source module is configured to generate intense pulsed light.

2. The pulse frequency control device according to claim 1, wherein The pulse control module includes: a switch SW1, a NOT gate U1, a NOT gate U2, an amplifier U3, a triode Q1, and a triode Q2; The central control module is connected to the first end of the switch SW1, the second end of the switch SW1 is connected to the input end of the NOT gate U1, and the output end of the NOT gate U1 is connected to the input end of the NOT gate U2; The output end of the NOT gate U2 is connected to the non-inverting input end of the amplifier U3, and the inverting input end of the amplifier U3 is used to receive a reference voltage; The output end of the amplifier U3 is respectively connected to the base of the triode Q1 and the base of the triode Q2. The collector of the triode Q1 is used to connect to an external power supply VCC. The emitter of the triode Q1 is connected to the emitter of the triode Q2, and the collector of the triode Q2 is used to ground; The emitter of the triode Q1 is connected to the light source module.

3. A pulse frequency control device according to claim 2, characterized in that, The pulse control module further includes: a pulse generation unit; The pulse generation unit is connected to the pulse control module.

4. A pulse frequency control device as claimed in claim 3, wherein, The pulse generation unit includes: a switch SW2, a timer U4, a resistor R1, a rheostat RP1, a capacitor C1, and a capacitor C2; The first end of the switch SW2 is connected to the input end of the NOT gate U1, and the second end of the switch SW2 is connected to the voltage output end of the timer U4; The voltage control end of the timer U4 is connected to the first end of the capacitor C1, and the second end of the capacitor C1 is grounded; The discharge end of the timer U4 is respectively connected to the first end of the resistor R1 and the first end of the rheostat RP1; The high-level trigger end of the timer U4 is connected to the low-level trigger end of the timer U4; The low-level trigger end of the timer U4 is respectively connected to the second end of the rheostat RP1 and the first end of the capacitor C2, and the second end of the capacitor C2 is grounded; The direct reset end of the timer U4 and the direct power supply end of the timer U4 are both used to connect to an external power supply VDD; The ground end of the timer U4 is grounded; The first end of the resistor R1 is used to connect to an external power supply VDD.

5. A pulse frequency control device according to claim 1, characterized in that, The collection module includes: a signal collection unit and an environment collection unit; The signal collection unit is connected to the signal processing module; the signal collection unit is configured to collect the user skin information; The environment collection unit is connected to the central control module; the environment collection unit is configured to collect the environmental parameter information.

6. A pulse frequency control device as claimed in claim 1, wherein, Also included: A filter module; The filter module is connected to the light source module.

7. A pulse frequency control device according to claim 1, characterized in that, Also included: A refrigeration module; The refrigeration module is connected to the central control module.

8. The pulse frequency control device according to claim 1, characterized in that, It further includes: A pulse compensation module; The pulse compensation module is respectively connected to the central control module and the light source module.

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