Laser beauty equipment control system and laser beauty equipment

Abstract

The utility model provides a laser beauty equipment control system and laser beauty equipment, and belongs to the technical field of electronics. The system comprises a first processor, a temperature adjusting module and an alarm module, wherein the temperature adjusting module comprises a semiconductor refrigeration unit, a water cooling unit, a radiator and a fan; the first processor is in communication connection with the temperature adjusting module and is electrically connected with the alarm module; the first processor is further electrically connected with the load, and when the load is in the working state, the first processor controls the temperature adjusting module to operate. The temperature control capability of the equipment can be greatly improved, so that the temperature circulation of the equipment is better, and the equipment is prevented from scalding a user or damaging a circuit of the equipment due to overheating.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 2024103257529, filed on March 21, 2024, entitled "Control System for Laser Cosmetic Equipment and Laser Cosmetic Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of electronic technology, and more specifically, to a laser beauty equipment control system and a laser beauty equipment. Background Technology

[0004] In laser cosmetic procedures, near-infrared light with a spectrum in the 900-1800 nm band is called "milk light." During the use of milk light laser cosmetic equipment, the instrument temperature needs to be monitored to prevent burns to the user or damage to the equipment due to excessive heat.

[0005] Existing conventional heat dissipation technologies often employ single or combined technologies such as heat pipes, TEC (Thermoelectric Cooler), and air cooling. However, this not only increases the size of the device, but also, due to the specific application scenarios, heat pipe cooling technology cannot achieve high heat dissipation efficiency. Ordinary TEC cooling suffers from the problem that the temperature of the heat dissipation module located nearby also rises due to the high temperature of the tungsten filament's light emission and thermal radiation. At this point, the temperature difference between the preset target temperature and the actual temperature of the heat dissipation module is too large, and the larger the temperature difference of the TEC, the worse the cooling effect, and the lower the working efficiency of the TEC under load. Utility Model Content

[0006] To address the aforementioned technical problems, this application provides a laser beauty device control system and a laser beauty device.

[0007] The embodiments of this utility model can be implemented as follows:

[0008] In a first aspect, this utility model provides a control system for a laser beauty device, which is applied to a laser beauty device. The system includes a first processor, a temperature regulation module and an alarm module. The temperature regulation module includes a semiconductor cooling unit, a water cooling unit, a heat sink and a fan.

[0009] The first processor is communicatively connected to the temperature regulation module and electrically connected to the alarm module;

[0010] The first processor is also electrically connected to the load, and when the load is in operation, the first processor controls the temperature regulation module to operate.

[0011] In an optional implementation, the system further includes a vibration motor electrically connected to the first processor;

[0012] The system also includes a second processor, which is communicatively connected to the first processor;

[0013] The second processor also communicates with the display screen and the camera;

[0014] The semiconductor cooling unit includes a semiconductor cooling chip and an NTC thermistor chip, the NTC thermistor chip being used to monitor the instrument temperature of the laser beauty device.

[0015] In an optional embodiment, the temperature regulation module further includes a TEC control module, which is communicatively connected to the first processor and also communicatively connected to the thermoelectric cooler.

[0016] The TEC control module is used to send a first cooling signal to the thermoelectric cooler, which enables the thermoelectric cooler to adjust the temperature at the front end of the laser beauty device.

[0017] In an optional implementation, the TEC control module is also communicatively connected to the water-cooling unit;

[0018] The TEC control module is also used to send a second cooling signal to the water-cooling unit, wherein the second cooling signal is used to enable the operation of the water-cooling unit to adjust the temperature of the cavity of the laser beauty device.

[0019] In an optional implementation, the TEC control module includes a first switching transistor, a first voltage regulator, a second switching transistor, and a second voltage regulator;

[0020] The control terminal of the first switching transistor is electrically connected to the first processor, the output terminal of the first switching transistor is grounded, and the input terminal of the first switching transistor is electrically connected to the output terminal of the first voltage regulator.

[0021] The input terminal of the first voltage regulator is electrically connected to the first processor;

[0022] The control terminal of the second switching transistor is electrically connected to the first processor, the output terminal of the second switching transistor is grounded, and the input terminal of the second switching transistor is electrically connected to the output terminal of the second voltage regulator.

[0023] The input terminal of the second voltage regulator is electrically connected to the first processor.

[0024] In an optional embodiment, the system comprises a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a third resistor, a fourth resistor, and a fifth resistor. One end of the first inductor is electrically connected to the input terminal of the first switching transistor, and another end of the first inductor is electrically connected to the output terminal of the first voltage regulator. One end of the first capacitor is grounded, and the other end of the first capacitor is electrically connected to the input terminal of the first switching transistor. One end of the second capacitor is grounded, and the other end of the second capacitor is electrically connected to the IN pin of the first voltage regulator. One end of the third capacitor is electrically connected to the output terminal of the first voltage regulator, and the other end of the third capacitor is electrically connected to the BS pin of the first voltage regulator. One end of the fourth capacitor is electrically connected to the VCC pin of the first voltage regulator, and the other end of the fourth capacitor is grounded. One end of the third resistor is grounded, and the other end of the third resistor is electrically connected to the EN pin of the first voltage regulator. One end of the fourth resistor is also electrically connected to one end of the fifth sampling resistor, one end of the sixth resistor R6, and one end of the seventh protection resistor R7. The other end of the fifth sampling resistor is electrically connected to the other end of the first capacitor. The other end of the sixth sampling resistor is grounded; the other end of the seventh protection resistor is electrically connected to the PA4 pin of the microcontroller unit.

[0025] In an optional implementation, the second processor is a CPU or a GPU;

[0026] The laser beauty equipment control system also includes an LC filter unit, and the VDDA pin of the microcontroller is electrically connected to the power supply through the LC filter unit.

[0027] In an optional embodiment, the first and second switching transistors are NCEP3040Q N-channel superjunction MOSFETs, and the first and second voltage regulators are SY8368AQQC voltage regulators.

[0028] In an optional implementation, the first pin of the NTC thermistor is electrically connected to a low-voltage power supply, and the second pin of the NTC thermistor is communicatively connected to the first processor.

[0029] The first processor is used to obtain the instrument temperature sampled by the NTC thermistor chip, and then modulate the instrument temperature to obtain a cooling adjustment command.

[0030] The first processor is also configured to adjust the power of the semiconductor cooling chip based on the cooling adjustment command.

[0031] Secondly, this utility model provides a laser beauty device, which includes a laser beauty device control system as described in any of the foregoing embodiments.

[0032] The embodiments of this utility model include at least the following beneficial effects:

[0033] This embodiment utilizes multiple cooling methods—water cooling, thermoelectric coolers, and fans—to cool the laser cosmetic device, effectively preventing the low cooling efficiency often associated with single-cooling devices, especially thermoelectric coolers, which are highly susceptible to temperature fluctuations. Furthermore, it promptly cuts off power and issues a warning when the device overheats, ensuring safety during operation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of a module of the laser cosmetic equipment control system provided in this application;

[0036] Figure 2 MCU pin definition diagram for the laser beauty equipment control circuit provided in this application;

[0037] Figure 3 A schematic diagram of the TEC control circuit for the laser cosmetic device control circuit provided in this application;

[0038] Figure 4 A schematic diagram of the NTC control circuit for the laser cosmetic device control circuit provided in this application;

[0039] Figure 5 A power supply schematic diagram of one specific embodiment of the laser cosmetic equipment control system provided in this application;

[0040] Figure 6 A power supply schematic diagram for another specific embodiment of the laser cosmetic equipment control system provided in this application.

[0041] Icons: 100 - First processor; 200 - Temperature regulation module; 300 - Alarm module; 400 - Load; 500 - Vibration motor; 600 - Second processor; 700 - Display screen; 800 - Camera; 210 - Semiconductor cooling unit; 220 - Water cooling unit; 230 - Heat sink; 240 - Fan. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0047] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0048] Example 1

[0049] Milk light can act on the water in the middle to deep layers of the dermis. When the surface of the water is irradiated by milk light, the distance between each water molecule increases, making it more fluid. Mitochondria in cells are powered by an enzyme bound to their cell membrane. This enzyme spins like a molecular turbine, and being surrounded by more fluid water makes it easier for it to spin, thereby producing more ATP (adenosine triphosphate).

[0050] ATP promotes cell repair and regeneration. ATP, or adenosine triphosphate, is a coenzyme and a direct source of energy for all life activities of cells in the body. It promotes cell repair and regeneration, enhances the bioactivity of collagen fibers, redistributes the dermis, and repairs damaged skin. This allows the skin to act as an excellent reflector, indirectly increasing the refractive index of the skin surface.

[0051] In addition, photothermal effects can promote the metabolism and decomposition of pigments. The photothermal effect produced by milk light can enhance vascular function, dilate microvessels, accelerate blood circulation, increase blood oxygen content, and accelerate the elimination of metabolic products.

[0052] However, milk light beauty devices typically emit light through tungsten filaments. Tungsten filament light emission exhibits a geometrical divergence pattern, with each point radiating in a spherical space. This results in significant optical energy loss for the optical system control technology, which is converted into heat, increasing the system's heat dissipation burden. Existing conventional heat dissipation technologies often employ single or combined technologies such as heat pipes, TEC (thermal energy transfer circuits), and air cooling, increasing the device's size. Due to the specific application scenarios, heat pipe cooling technology cannot achieve high heat dissipation efficiency. Ordinary TEC cooling suffers from the problem that the high temperature of the tungsten filament's light emission and thermal radiation causes the temperature of nearby heat dissipation modules to rise accordingly. This results in a large temperature difference between the preset management temperature and the actual temperature of the heat dissipation modules. In the TEC effect, the larger the temperature difference, the worse the cooling effect, thus reducing the operating efficiency at a load of 400.

[0053] Based on this, please see Figure 1 This application provides a control system for a laser beauty device, applied to a laser beauty device. The system includes a first processor 100, a temperature regulation module 200, and an alarm module 300. The temperature regulation module 200 includes a semiconductor cooling unit 210, a water cooling unit 220, a heat sink 230, and a fan 240. The first processor 100 is communicatively connected to the temperature regulation module 200 and electrically connected to the alarm module 300. The first processor 100 is also electrically connected to a load 400. When the load 400 is in operation, the first processor 100 controls the operation of the temperature regulation module 200.

[0054] In this embodiment, the first processor 100 is configured to increase the power of the semiconductor cooling unit 210, the water cooling unit 220, and the fan 240 when the temperature regulation module 200 detects that the instrument temperature of the laser beauty device exceeds a temperature threshold. The first processor 100 is also configured to reduce the power of the load 400 until the instrument temperature falls back to the temperature threshold if the instrument temperature does not fall back to the temperature threshold within a first preset time period. If the instrument temperature still does not fall back to the temperature threshold within a second preset time period after reducing the power of the load 400, the load 400 is controlled to shut down, and the alarm module 300 issues an alarm.

[0055] Specifically, in combination Figure 2 , Figure 3 , Figure 4 Figure 5 and Figure 6 Explain the control process of the laser beauty equipment control system:

[0056] First, please see Figure 2 , Figure 2 A pin definition diagram of the first processor 100 provided in this application is shown. Taking an example where the first processor 100 is an STM32 MCU and the second processor 600 is a CPU, GPU, or a combination of both,... Figure 2 The pin definitions of the MCU (Microcontroller Unit) U6 are shown. Its specific model can be STM32F103RCT6, often abbreviated as STM32. Using dual processors allows for full utilization of their respective advantages, enabling parallel operation and reducing the potential inefficiencies associated with serial processing.

[0057] The MCU (Microcontroller Unit U6) is used to send and receive signals with various modules, as well as process signals. The CPU / GPU enables efficient local image processing and analysis without a network, providing real-time response capabilities for image processing. It meets the needs of the device's sampling output for millisecond-level sampling, analysis, comparison, and intervention. A communication protocol is established between the CPU and the MCU (STM32) via a serial port, and the STM32 is adjusted using encoded instructions.

[0058] The MCU (STM32) core itself has running program code. When it receives instructions from the CPU, it calls the encoded instructions to complete the work assigned to the main controller. The MCU (STM32)'s own running program includes the control of devices such as TEC, motor and load 400. The real-time adjustment of load 400 is also completed by receiving instructions from the CPU. The CPU's working instructions for the user to operate the touch screen 700 include the modulation of mode response, power intensity and working status.

[0059] It is important to note that Figure 2 The provided pin definitions are for all pins, but in practical applications, not all pins are necessarily used. Further details will be discussed later. Figures 3-6 , Figures 3-6 The appearance of in Figure 2 If the same signal is received, it indicates that the terminal containing that signal is electrically connected to the pin corresponding to U6. Furthermore, Figure 2 An illustrative example is provided, consisting of LC filter units C20, C21, and L4, which are electrically connected to the power supply VCC_3V3 of the MCU (i.e., microcontroller unit U6) to form a filter between the chip and the power supply. Furthermore, ADC_ADN and ADC_TEMP represent analog-to-digital conversion of other types of signals in the circuit, transforming originally analog signals into digital signals.

[0060] In one embodiment, the laser beauty device control system further includes an LC filter unit, and the VDDA pin of the MCU is electrically connected to the power supply through the LC filter unit. Please refer again. Figure 2 The microcontroller unit U6 is an STM32 chip. The VDDA pin (pin 13) of the microcontroller unit U6 is electrically connected to the power supply VCC_3V3 through an LC filter unit. The LC filter unit includes a twentieth capacitor C20, a twenty-first capacitor C21, and a fourth inductor L4. One end of the twentieth capacitor C20 and one end of the twenty-first capacitor C21 are connected in parallel and grounded. The other end of the twentieth capacitor C20 and the other end of the twenty-first capacitor C21 are connected in parallel and then electrically connected to one end of the fourth inductor L4. The other end of the fourth inductor L4 is electrically connected to the VDDA pin of the microcontroller unit U6, and one end of the fourth inductor L4 is also electrically connected to the power supply VCC_3V3.

[0061] For example, this application can use two thermoelectric coolers (TEC-1 and TEC-2) for coordinated cooling, and two NTC thermistors (NTC-1 and NTC-2). When the load 400 is in standby mode, the two thermoelectric coolers (or one of the two thermoelectric coolers), the motor, and the fan 240 continue to operate. After one minute of normal operation, the voltage of the two thermoelectric coolers (or one of the two thermoelectric coolers) drops to 5V. If the standby time of the load 400 exceeds two minutes, the operation of the load 400 is automatically disconnected, and other devices (including thermoelectric coolers, thermistors, motors, fans, etc.) are also turned off simultaneously.

[0062] In an optional embodiment, the system further includes a vibration motor 500, which is electrically connected to the first processor 100. The vibration motor 500 provides vibration feedback after an operation of an image command on the touchscreen display; and when the device is in operation, it may vibrate to increase the skin's absorption of skincare products.

[0063] In an optional implementation, the system further includes a second processor 600, which is communicatively connected to the first processor 100;

[0064] The second processor 600 is also in communication connection with the display screen 700 and the camera 800.

[0065] In an optional embodiment, the semiconductor cooling unit 210 includes a semiconductor cooling chip and an NTC thermistor chip, the NTC thermistor chip being used to monitor the instrument temperature of the laser beauty device.

[0066] In an optional embodiment, the temperature regulation module 200 further includes a TEC control module, which is communicatively connected to the first processor 100 and also communicatively connected to the thermoelectric cooler.

[0067] The TEC control module is used to send a first cooling signal to the thermoelectric cooler, which enables the thermoelectric cooler to adjust the temperature at the front end of the laser beauty device.

[0068] In an optional implementation, the TEC control module is also communicatively connected to the water-cooling unit 220;

[0069] The TEC control module is also used to send a second cooling signal to the water-cooling unit 220, wherein the second cooling signal is used to enable the operation of the water-cooling unit 220 to adjust the temperature of the cavity of the laser beauty device.

[0070] Please see Figure 3 , Figure 3 The control circuit of TEC is shown. TEC_EN2 (the second cooling signal) is mainly used to enable the cooling of the water-cooling system by the cooling element. TEC_EN2 is emitted from pin PB5 (pin 57) of the microcontroller U6. TEC_EN3 (the first cooling signal) is mainly used to enable the cooling part of the device that contacts the skin, keeping the skin-contacting part at a set temperature. TEC_EN3 is emitted from pin PB8 (pin 61) of the microcontroller U6. TEC_EN2 and TEC_EN3 together enable each cooling part to achieve temperature adjustment.

[0071] In an optional implementation, the TEC control module includes a first switch Q1, a first voltage regulator U1, a second switch Q2, and a second voltage regulator U2.

[0072] The control terminal of the first switching transistor is electrically connected to the first processor 100, the output terminal of the first switching transistor is grounded, and the input terminal of the first switching transistor is electrically connected to the output terminal of the first voltage regulator; the input terminal of the first voltage regulator is electrically connected to the first processor 100; the control terminal of the second switching transistor is electrically connected to the first processor 100, the output terminal of the second switching transistor is grounded, and the input terminal of the second switching transistor is electrically connected to the output terminal of the second voltage regulator; the input terminal of the second voltage regulator is electrically connected to the first processor 100.

[0073] Please combine again Figure 2 and Figure 3 The gate (G) terminal of the first switching transistor Q1 is connected to the PB4 pin (i.e., pin 56) of the microcontroller U6. The source (S) terminal of the first switching transistor Q1 is grounded. The drain (D) terminal of the first switching transistor Q1 is electrically connected to the Lx pin of the first voltage regulator U1. The EN pin of the first voltage regulator U1 is electrically connected to the PB5 pin of the microcontroller U6. The gate (G) terminal of the second switching transistor Q2 is connected to the PB9 pin of the microcontroller U6. The source (S) terminal of the second switching transistor Q2 is grounded. The drain (D) terminal of the second switching transistor Q2 is electrically connected to the Lx pin of the second voltage regulator U2. The EN pin of the second voltage regulator U2 is electrically connected to the PB8 pin of the microcontroller U6.

[0074] In addition, the TEC control module includes terminal H1 for connecting two circuits; one circuit consists of a first switching transistor Q1, a first voltage regulator U1, and related components, and the other circuit consists of a second switching transistor Q2, a second voltage regulator U2, and related components. The TEC control module also includes a first protection resistor R1 and a second protection resistor R2 for the first switching transistor Q1, wherein one end of the first protection resistor R1 is grounded, and the other end of the first protection resistor R1 is electrically connected to the G pin of the first switching transistor Q1. One end of the second protection resistor R2 is electrically connected to pin PB4 (i.e., pin 56) of the microcontroller U6, and the other end of the second protection resistor R2 is electrically connected to pin G of the first switching transistor Q1. The second protection resistor R2 is used to receive the control signal EN_Q2 from the MCU (i.e., microcontroller U6) and transmit it to the G terminal of the first switching transistor Q1. The TEC control module also includes an eighth protection resistor R8 and a ninth protection resistor R9 for the second switching transistor Q2. One end of the eighth protection resistor R8 is grounded, and the other end of the eighth protection resistor R8 is electrically connected to pin G of the second switching transistor Q2. One end of the ninth protection resistor R9 is electrically connected to pin 62 (i.e., pin PB9) of the microcontroller U6, and the other end of the ninth protection resistor R9 is electrically connected to pin G of the second switching transistor Q2. The ninth protection resistor R9 is used to receive the control signal EN_Q3 from the microcontroller U6. The TEC control module also includes a filter network composed of L1, C1, C2, C3, C4, R3, R4, and C5. After filtering by the first voltage regulator U1 and the filter network, the noise in the circuit is greatly reduced. The fifth resistor R5 and the sixth resistor R6 are output sampling resistors, which divide the output signal and then limit the current through the seventh protection resistor R7, finally obtaining the output signal DAC_VOUTA1. Here, DAC means that analog-to-digital conversion is required later. The TEC control circuit also includes a filter network composed of L2, C6, C7, C8, C9, R10, R11, and C10, as well as the twelfth output resistor R12, the thirteenth resistor R13, and the fourteenth current-limiting resistor R14. The principle is the same as above, and will not be repeated here.

[0075] Please see again Figure 3The filter network includes a first inductor L1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. One end of the first inductor L1 is electrically connected to the input terminal of the first switching transistor Q1, and another end of the first inductor L1 is electrically connected to the output terminal of the first voltage regulator U1. One end of the first capacitor C1 is grounded, and the other end of the first capacitor C1 is electrically connected to the input terminal of the first switching transistor Q1. One end of the second capacitor C2 is grounded, and the other end of the second capacitor C2 is electrically connected to the IN pin of the first voltage regulator U1. One end of the third capacitor C3 is connected to the input terminal of the first switching transistor Q1. The output terminal of the first voltage regulator U1 is electrically connected. The other end of the third capacitor C3 is electrically connected to the BS pin of the first voltage regulator U1. One end of the fourth capacitor C4 is electrically connected to the VCC pin of the first voltage regulator, and the other end of the fourth capacitor C4 is grounded. One end of the third resistor R3 is grounded, and the other end of the third resistor R3 is electrically connected to the EN pin of the first voltage regulator U1. One end of the fourth resistor R4 is electrically connected to one end of the fifth resistor R5, and one end of the fourth resistor R4 is also electrically connected to the FB pin of the first voltage regulator U1. One end of the fourth resistor R4 is also electrically connected to one end of the fifth resistor R5, one end of the sixth resistor R6, and one end of the seventh protection resistor R7. The other end of the fifth resistor R5 is electrically connected to the other end of the first capacitor C1. The other end of the sixth resistor R6 is grounded. The other end of the seventh protection resistor R7 is electrically connected to the PA4 pin (i.e., pin 20) of the microcontroller U4.

[0076] Please see again Figure 3The filter network further includes a second inductor L2, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth resistor R10, an eleventh resistor R11, and a tenth capacitor C10. One end of the second inductor L2 is electrically connected to the gate (G) terminal of the second switching transistor Q2, and another end of the second inductor L2 is electrically connected to the Lx pin of the second voltage regulator U2. One end of the sixth capacitor C6 is grounded, and the other end of the sixth capacitor C6 is electrically connected to the gate (G) terminal of the second switching transistor Q2. One end of the sixth capacitor C6 is grounded, and the other end of the seventh capacitor C7 is electrically connected to the IN pin of the second voltage regulator U2. One end of the eighth capacitor C8 is electrically connected to the Lx pin of the second voltage regulator U2, and the other end of the eighth capacitor C8 is electrically connected to the BS pin of the second voltage regulator U2. One end of the ninth capacitor C9 is electrically connected to the VCC pin of the second voltage regulator U2, and the other end of the ninth capacitor C9 is grounded. One end of the tenth resistor R10 is grounded, and the other end of the tenth resistor R10 is electrically connected to the EN pin of the second voltage regulator U2. One end of the eleventh resistor R11 is electrically connected to one end of the twelfth resistor R12. One end of the eleventh resistor R11 is also electrically connected to the FB pin of the second voltage regulator U2. One end of the eleventh resistor R11 is also electrically connected to one end of the twelfth resistor R12, one end of the thirteenth resistor R13, and one end of the fourteenth protection resistor R14. The other end of the twelfth resistor R12 is electrically connected to the other end of the sixth capacitor C6. The other end of the thirteenth resistor R13 is grounded. The other end of the fourteenth protection resistor R14 is electrically connected to the PA4 pin (i.e., pin 20) of the microcontroller U4.

[0077] Please see Figure 5 In one embodiment, the TEC control circuit further includes a third voltage regulator U3. The output of the third voltage regulator U3 is electrically connected to the MCU and is used to output the TEC_EN1 signal. The function of the TEC_EN1 signal is similar to that of TEC_EN2 and TEC_EN3, which is to enable the cooling section. The enabled object here can be other cooling devices such as fans. The branch containing the third voltage regulator U3 also includes a filter network composed of L3, C12, C13, C14, C15, R16, R17, and C16, as well as output sampling resistors R18 and R19 and current-limiting resistor R20. The principle is the same as above and will not be repeated here. Among them, the first switching transistor Q1 and the second switching transistor Q2 can be selected as N-channel superjunction MOSFETs of model NCEP3040Q, and the first voltage regulator U1, the second voltage regulator U2, and the third voltage regulator U3 can be selected as voltage regulators of model SY8368AQQC.

[0078] For example, please see again Figure 5The filter network of the branch containing the third voltage regulator U3 includes a third inductor L3, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth resistor R16, a seventeenth resistor R17, and a sixteenth capacitor C16. One end of the third inductor L3 is electrically connected to the Lx pin of the third voltage regulator U3; one end of the twelfth capacitor C12 is grounded, and the other end of the twelfth capacitor C12 is electrically connected to the other end of the third inductor L3, while the other end of the twelfth capacitor C12 is grounded. One end of the thirteenth capacitor C13 is grounded, and the other end of the thirteenth capacitor C13 is electrically connected to the GND pin of the third voltage regulator U3. One end of the fourteenth capacitor C14 is electrically connected to the Lx pin of the third voltage regulator U3, and the other end of the fourteenth capacitor C14 is electrically connected to the BS pin of the third voltage regulator U3. One end of the fifteenth capacitor C15 is grounded, and the other end of the fifteenth capacitor C15 is electrically connected to the VCC pin of the third voltage regulator U3. One end of the sixteenth resistor R16 is grounded, and the other end of the sixteenth resistor R16 is electrically connected to the EN pin of the third voltage regulator U3. One end of the seventeenth resistor R17 is electrically connected to the FB pin of the third voltage regulator U3, and the other end of the seventeenth resistor R17 is electrically connected to one end of the sixteenth capacitor C16. The other end of the sixteenth capacitor C16 is electrically connected to one end of the eighteenth resistor R18, and the other end of the eighteenth resistor R18 is electrically connected to one end of the nineteenth resistor R19. The other end of the nineteenth resistor R19 is grounded, and one end of the nineteenth resistor R19 is also electrically connected to one end of the twentieth resistor R20. The other end of the twentieth resistor R20 is electrically connected to the PA5 pin of the microcontroller unit U6.

[0079] In an optional implementation, please refer to Figure 4 The first pin of the NTC thermistor chip H2 is electrically connected to the low-voltage power supply VCC_3V3, and the second pin of the NTC thermistor chip is communicatively connected to the first processor 100.

[0080] The first processor 100 is used to obtain the instrument temperature sampled by the NTC thermistor chip, and then modulate the instrument temperature to obtain a cooling adjustment command.

[0081] The first processor 100 is also configured to adjust the power of the semiconductor cooling chip based on the cooling adjustment command.

[0082] Please see again Figure 4The first pin 1 of the NTC thermistor chip H2 is electrically connected to the low-voltage power supply VCC_3V3. The second pin 2 of the NTC thermistor chip is connected to pin 23 (PA7 pin) of the STM32 (i.e., microcontroller unit U6) via an ADC-ADN. After sampling and obtaining temperature data, the chip modulates the data value on the TEC pin, using voltage adjustment to modulate the power of the TEC. Specifically, after the NTC thermistor chip samples the temperature data, it converts the data through the ADC and sends the value to the STM32. The chip can read and recognize the value. When the temperature is too high or too low, it adjusts the voltage of the TEC. Specifically, when the temperature is too high, the TEC voltage is increased, the cooling capacity is increased, and the temperature will drop; when the temperature is too low, the TEC voltage is decreased, the cooling capacity is reduced, and the temperature will rise. This calculus-integral adjustment method completes this part of the temperature maintenance process.

[0083] In addition, the control circuit of the NTC thermistor chip H2 also includes an RC filter structure composed of an eleventh capacitor C11 and a fifteenth resistor R15, which realizes filtering between the NTC thermistor chip and the MCU. One end of the eleventh capacitor C11 and one end of the fifteenth resistor R15 are connected in parallel to ground, and the other end of the eleventh capacitor C11 and the other end of the fifteenth resistor R15 are connected in parallel to the second pin 2 of the NTC thermistor chip H2.

[0084] In an optional implementation, the first processor 100 is further configured to control the temperature regulation module 200 to shut down after the load 400 has been in standby mode for a third preset period of time.

[0085] For example, the standby time, i.e. the third preset duration, can be within 2 minutes. When the user does not perform any action during the standby period, the device will automatically shut down to achieve energy saving.

[0086] If the load 400 is in operation for a fourth preset time, the first processor 100 is also used to shut down the load 400, and after a fifth preset time, shut down the temperature regulation module 200.

[0087] Taking the fourth preset duration of 10 minutes and the fifth preset duration of 30 seconds as an example, when the load 400 accumulates 10 minutes of working time in one run (excluding standby time), the load 400 will be shut down, while the semiconductor cooling chip, fan 240 and beauty device motor will continue to run for 30 seconds before automatically shutting down.

[0088] In addition, once the device is started, if the running time exceeds 10 seconds, the thermoelectric cooler, fan 240, and beauty device motor will automatically stop after running for 30 seconds after the power button is pressed. This is to prevent the machine from overheating due to prolonged operation and to avoid burns to the user.

[0089] Please see Figure 6 When the device is started, the beauty device motor begins to work simultaneously. Even after the load 400 stops working, the beauty device motor continues to operate for 3-5 seconds. Simultaneously, the thermoelectric cooler and fan 240 also operate synchronously with the motor. Even when the load 400 is in standby mode, the thermoelectric cooler, beauty device motor, and fan 240 continue to operate. The beauty device motor is the motor that supports the beauty device's own functions. Figure 6 U4 is a voltage regulator or constant voltage transformer, and U5 is an electronic potentiometer. The ADJ_EN signal emitted from the third pin of U4 is the motor enable signal, which is used to enable the motor of the beauty device. When the ADJ_EN signal enables the motor of the beauty device, the motor runs normally; when the enable signal is deactivated, the motor stops running.

[0090] The ADJ_UD signal output from pin 3 of U5 is the motor direction signal, and the ADJ_CS signal output from pin 4 of U5 is the high-speed start signal for the motor. U4 is supplied with +5V, and U5 is supplied with VCC_3V3. Furthermore, the 3V3_ADJ signal output from pin 5 of U4 is the operating voltage of the beauty device motor. 3V3_ADJ is also electrically connected to terminal CN1. Figure 6 The circuit shown also includes isolation capacitors C17, C18, and C19 between the power supply and ground, and a 21st protective resistor R21 between U4 and U5.

[0091] It should be noted that the motor's operating voltage is adjustable. The currently defined operating voltage is 1.2V. As the speed range changes, the power of the load 400 increases, and the motor's supply voltage changes accordingly. The higher the power of the load 400, the higher the motor's operating voltage. The range of variation is 1.2-3.3V. For example, U4 can be a voltage-adjustable low-dropout regulator TLV74312PDBVR.

[0092] Please see again Figure 2 and Figure 6The VIN pin of U4 is electrically connected to one end of the seventeenth capacitor C17, and the other end of the seventeenth capacitor C17 is grounded. The GND pin of U4 is grounded. The shutdown# pin of U4 is electrically connected to the PA12 pin (i.e., pin 45) of the microcontroller U6. The VOUT pin of U4 is electrically connected to one end of the nineteenth capacitor C19 and terminal CN1, and the other end of the nineteenth capacitor C19 is grounded. The NC / ADJ pin of U4 is electrically connected to the H pin of U5 through the twenty-first resistor R21. The L pin of U5 is grounded. The CS pin of U5 is electrically connected to the PA15 pin (i.e., pin 50) of the microcontroller U6. The U / D pin of U5 is electrically connected to the PA10 pin (i.e., pin 51) of the microcontroller U6. The GND pin of U5 is grounded. The VDD pin of U5 is electrically connected to the power supply VCC_3V3. One end of the eighteenth capacitor C18 is electrically connected to the GND pin of U5, and the other end of the eighteenth capacitor C18 is electrically connected to the VDD pin of U5.

[0093] In one specific implementation, when the NTC thermistor chip detects that the temperature is too high, the power of the semiconductor cooling chip is increased, and the operating voltage 3V3_ADJ of the beauty device motor and fan 240 is also increased. If the temperature still cannot drop or the drop is not significant after increasing the power, the power of the load 400 is reduced until the temperature returns to the range of the initial setting value.

[0094] If the temperature is too high and the system fails to return to a safe level after reducing the load by 400 kW for a period of time, an alarm will be issued and the system will automatically shut down.

[0095] The laser cosmetic equipment control system provided in this embodiment has at least the following advantages:

[0096] This embodiment utilizes multiple cooling methods—water cooling, thermoelectric coolers, and fans—to cool the laser cosmetic device, effectively preventing the low cooling efficiency often associated with single-cooling devices, especially thermoelectric coolers, which are highly susceptible to temperature fluctuations. Furthermore, it promptly cuts off power and issues a warning when the device overheats, ensuring safety during operation.

[0097] Example 2

[0098] Secondly, this utility model provides a laser beauty device, which includes a laser beauty device control system as described in any of the foregoing embodiments.

[0099] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A laser cosmetic device control system, characterized by, The system is applied to a laser cosmetic device, and comprises a first processor, a temperature regulation module and an alarm module, wherein the temperature regulation module comprises a semiconductor refrigeration unit, a water cooling unit, a heat sink and a fan. The first processor is in communication connection with the temperature regulation module, and the first processor is in electrical connection with the alarm module. The first processor is also in electrical connection with a load, and when the load is in a working state, the first processor controls the temperature regulation module to operate.

2. The laser cosmetic device control system of claim 1, wherein, The system further comprises a vibration motor, and the vibration motor is in electrical connection with the first processor. The system further comprises a second processor, and the second processor is in communication connection with the first processor. The second processor is also in communication connection with a display screen and a camera. The semiconductor refrigeration unit comprises a semiconductor refrigerating sheet and an NTC thermosensitive chip, and the NTC thermosensitive chip is used for monitoring the instrument temperature of the laser cosmetic device.

3. The laser cosmetic device control system of claim 2, wherein, The temperature regulation module further comprises a TEC control module, and the TEC control module is in communication connection with the first processor and also in communication connection with the semiconductor refrigerating sheet. The TEC control module is used for sending a first refrigeration signal to the semiconductor refrigerating sheet, and the first refrigeration signal is used for enabling the semiconductor refrigerating sheet to adjust the temperature of the front end of the laser cosmetic device.

4. The laser cosmetic device control system of claim 3, wherein, The TEC control module is also in communication connection with the water cooling unit. The TEC control module is also used for sending a second refrigeration signal to the water cooling unit, wherein the second refrigeration signal is used for enabling the operation of the water cooling unit to adjust the temperature of the cavity of the laser cosmetic device.

5. The laser cosmetic device control system of claim 3, wherein, The TEC control module comprises a first switch tube, a first voltage stabilizer, a second switch tube and a second voltage stabilizer. The control end of the first switch tube is in electrical connection with the first processor, the output end of the first switch tube is grounded, and the input end of the first switch tube is in electrical connection with the output end of the first voltage stabilizer. The input end of the first voltage stabilizer is in electrical connection with the first processor. The control end of the second switch tube is in electrical connection with the first processor, the output end of the second switch tube is grounded, and the input end of the second switch tube is in electrical connection with the output end of the second voltage stabilizer. The input end of the second voltage stabilizer is in electrical connection with the first processor.

6. The laser cosmetic device control system of claim 5, wherein, The first processor is a micro control unit, and the TEC control module further comprises a filter network, the filter network comprising a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a third resistor, a fourth resistor, a fifth resistor; one end of the first inductor is electrically connected with the input end of the first switch tube, and the other end of the first inductor is electrically connected with the output end of the first voltage stabilizer; one end of the first capacitor is grounded, and the other end of the first capacitor is electrically connected with the input end of the first switch tube; one end of the second capacitor is grounded, and the other end of the second capacitor is electrically connected with the IN pin of the first voltage stabilizer; one end of the third capacitor is electrically connected with the output end of the first voltage stabilizer, and the other end of the third capacitor is electrically connected with the BS pin of the first voltage stabilizer; one end of the fourth capacitor is electrically connected with the VCC pin of the first voltage stabilizer, and the other end of the fourth capacitor is grounded; one end of the third resistor is grounded, and the other end of the third resistor is electrically connected with the EN pin of the first voltage stabilizer; one end of the fourth resistor is electrically connected with one end of the fifth sampling resistor, and the other end of the fourth resistor is electrically connected with the FB pin of the first voltage stabilizer; one end of the fourth resistor is also electrically connected with one end of the fifth sampling resistor, one end of the sixth resistor and one end of the seventh protective resistor respectively; the other end of the fifth sampling resistor is electrically connected with the other end of the first capacitor; the other end of the sixth sampling resistor is grounded; and the other end of the seventh protective resistor is electrically connected with the PA4 pin of the micro control unit.

7. The laser cosmetic device control system of claim 6, wherein, The second processor is a CPU or a GPU. The laser cosmetic device control system further comprises an LC filter unit, and the VDDA pin of the micro control unit is electrically connected with the power supply through the LC filter unit.

8. The laser cosmetic device control system of claim 5, wherein, The first switch tube and the second switch tube are N-channel super-junction MOS tubes of NCEP3040Q, and the first voltage stabilizer and the second voltage stabilizer are voltage stabilizers of SY8368AQQC.

9. The laser cosmetic device control system of claim 3, wherein, The first pin of the NTC thermosensitive chip is electrically connected with a low-voltage power supply, and the second pin of the NTC thermosensitive chip is in communication connection with the first processor. The first processor is configured to modulate the instrument temperature after obtaining the instrument temperature sampled by the NTC thermosensitive chip, to obtain a refrigeration adjustment instruction. The first processor is further configured to adjust the power of the semiconductor refrigeration piece based on the refrigeration adjustment instruction.

10. A laser cosmetic device, characterized by, The laser cosmetic device comprises the laser cosmetic device control system according to any one of claims 1-9. The laser cosmetic device comprises the laser cosmetic device control system according to any one of claims 1-9.

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