Method and device for controlling light source type medical beauty product with precise energy output

Abstract

The invention provides a light source type medical beauty product control method and device with precise energy output. The problems that energy output of an existing flash type light source type medical beauty product cannot be accurately controlled and is influenced by attenuation of a damaged device are solved through unique design. The device comprises a light source, a light sensor, a signal conversion unit, an energy control unit, a processor, a power supply and the like. The control method covers a light source energy and photosensitive signal relation calibration process and a precise energy output control process, a mapping coefficient is obtained through calibration, and then a light sensing target integral value is calculated according to the mapping coefficient to control flash energy. According to the method, the problem of attenuation of a lossy device can be effectively solved, the flash energy of each time is accurately controlled, the performance stability of a product is improved, the consistency of the beauty effect is ensured, the method has important medical beauty application value, and a reliable and accurate energy control solution is provided for the industry.

Description

Technical Field

[0001] The present invention relates to the field of medical cosmetic products of light sources with precise energy output, and specifically to a control method and device for medical cosmetic products of light sources with precise energy output. Background Art

[0002] In the field of medical cosmetology, the application of light source products is becoming more and more widespread, such as for skin whitening, freckle removal, hair removal and other projects. However, current flash-type light source medical cosmetology products have significant defects. The energy output of traditional products generally adopts an open-loop output method, which makes it difficult to accurately control the output energy. As the use time increases, key lossy components such as xenon lamps and energy storage capacitors will attenuate. After multiple flashes of xenon lamps, the internal gas discharge efficiency decreases and the luminous intensity is unstable; the capacitance value of the energy storage capacitor will gradually decrease, affecting the energy storage and release capabilities. These problems have caused a significant increase in the uncertainty of product output energy, which directly leads to uneven beauty effects. Summary of the invention

[0003] The purpose of the present invention is to provide a method and device for controlling light source medical cosmetic products with precise energy output, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a method for controlling a light source medical beauty product with precise energy output, comprising the following steps: Calibration process of the relationship between light source energy and photosensitive signal: Under the control of the product processor, the energy control device drives the light source to perform a flash operation; at the same time, the external standard energy detection instrument collects the energy value output by the flash , the light sensor senses the flash process in real time and outputs the corresponding electrical signal The electrical signal is converted by the signal conversion unit and then transmitted to the processor for collection; the processor collects the data from the start time of the flash process. Until the end time The collected photoelectric signal Perform integral operation, and then according to the formula Determine the mapping coefficient between light perception integral value and energy output ; Precise energy output control process: pre-set target output energy , the processor uses the determined mapping coefficients and target output energy , according to the formula Calculate the light perception target integral value ; Subsequently, the processor sends a start signal to the energy control unit to make the light source flash and simultaneously integrate the light output signal again; during the integration process, the processor continuously monitors the light signal integration value, and once the integration value reaches the calculated light target integration value , a shutdown signal is immediately sent to the energy control unit to terminate the flashing of the light source, thereby achieving precise energy output control.

[0005] Furthermore, the external standard energy detection instrument adopts a combination of a high-precision photoelectric detector and an integrating sphere system; the photoelectric detector has an extremely low noise level and can accurately capture the weak light signal emitted by the light source under complex ambient light interference; the inner surface of the integrating sphere system is coated with a material with high reflectivity and excellent diffuse reflection performance, with a reflectivity of more than 99%, ensuring that the light is evenly mixed in the sphere, so that the uncertainty of the collected energy value J is controlled within ±0.5%; at the same time, the detection instrument is equipped with an advanced signal conditioning circuit, which can amplify and filter the collected signal, and its gain can be accurately adjusted in the range of 1-1000, and the cut-off frequency can be flexibly set between 1Hz-10kHz, which further improves the accuracy and stability of energy value acquisition and lays a solid foundation for the subsequent accurate calculation of the mapping coefficient k.

[0006] Furthermore, the high-sensitivity photodiode selected for the light sensing is designed based on a special semiconductor material structure; it adopts a multi-layer heterojunction structure, and achieves high absorption efficiency and fast response characteristics for light of a specific wavelength by precisely controlling the doping concentration and thickness of each layer of materials; within the commonly used light band of 400-1200nm for medical cosmetology, its quantum efficiency is as high as over 80%, and it can efficiently convert weak light signals into electrical signals; in addition, the photodiode also integrates a temperature compensation circuit, which can monitor its own operating temperature in real time, and automatically compensate and correct the output signal according to a preset temperature-response curve; within the ambient temperature range of -10℃-50℃, the drift of its output signal does not exceed 0.1% of the full scale, ensuring that the flash process can be stably and accurately sensed and the corresponding electrical signal v can be output under different usage environments, effectively improving the reliability of the entire control system.

[0007] Furthermore, the ADC chip used in the signal conversion unit is a high-precision, low-power successive approximation chip; a high-precision reference voltage source is integrated inside it, and the voltage stability is better than ±0.01%, providing a stable reference voltage for analog signal conversion; the chip also has an automatic calibration function, which can automatically calibrate the conversion error at each startup or regular operation, and control the nonlinear error within ±0.005%; at the same time, in order to improve the reliability and anti-interference ability of data transmission, the signal conversion unit uses a high-speed differential signal transmission line between the ADC chip and the processor, and its transmission rate can reach more than 100Mbps, and it has good electromagnetic shielding performance, which can effectively suppress the influence of external electromagnetic interference on the converted digital signal, ensure that the accuracy of the signal transmitted to the processor meets the precise control requirements, and ensure the accuracy of the entire control process.

[0008] Furthermore, the ARM architecture processor selected by the processor has multi-core processing capability, with the number of cores being no less than 4; each core adopts an advanced superscalar pipeline architecture with an instruction-level parallelism of more than 4, and can execute multiple instructions simultaneously within one clock cycle, greatly improving computing efficiency; it has a large-capacity high-speed cache integrated inside, with a first-level cache capacity of no less than 32KB and a second-level cache capacity of no less than 512KB, and adopts an intelligent cache management strategy, which can automatically adjust the cache content according to the access frequency and locality principle of the data, thereby reducing data access delay; in addition, the processor is also equipped with a dedicated hardware floating-point unit, which supports IEEE754 standard floating-point operations, and its floating-point operation performance reaches more than 1000 MFLOPS per second, which can quickly and accurately complete complex integral operations and logic processing, ensuring efficient execution of the control process, and meeting the requirements of light source medical beauty products for fast and precise control of energy output.

[0009] A medical cosmetic light source device with precise energy output, wherein the device achieves precise control of the output energy of the light source through a control method for medical cosmetic light source products with precise energy output, ensures that the energy output of each flash meets the set target energy value, effectively overcomes the energy output uncertainty problem caused by the attenuation characteristics of lossy devices in the prior art, and improves product performance and the stability of medical cosmetic effects, and is characterized in that it comprises: a main body and a control panel installed on the main body, wherein a light source is installed at the front end of the main body, which can emit light for medical cosmetics; It also includes: a light sensor, which is arranged inside the product near the light source, and is used to sense the intensity of the light emitted by the light source, and convert the sensing result into a voltage, current or digital signal output, and the amplitude of the output signal is proportional to the output energy intensity of the light source; A signal conversion unit, which is connected to the light sensor and the processor, and is used to convert the signal output by the light sensor into a signal form that can be recognized and processed by the processor; An energy control unit is connected to the processor and the light source, and provides a driving voltage or current signal to the light source according to a switch signal or control command issued by the processor to control the lighting and extinguishing of the light source; The processor, as the control core of the entire device, is responsible for identifying and collecting signals from the signal conversion unit, performing logical operations and processing, and outputting control signals to the energy control unit; The power supply provides a stable power supply to various components within the device.

[0010] Furthermore, the electrodes of the xenon lamp are made of a high temperature resistant and corrosion resistant iridium-yttrium alloy material; the melting point of this alloy material is as high as 2400°C, and it has good stability in the high temperature environment generated by xenon discharge, and can effectively prevent the ablation and deformation of the electrode, thereby extending the service life of the xenon lamp; at the same time, the tube wall of the lamp is made of quartz glass, the purity of which is not less than 99.99%, and it has extremely high transmittance for light in the 400-1200nm band, which can reach more than 95%, and has good thermal stability and mechanical strength, and can withstand the thermal stress when the lamp is working. and pressure changes; in addition, the xenon lamp is also equipped with an efficient heat dissipation structure, which adopts a combination of heat pipe heat dissipation technology and aluminum alloy heat sink fins; the heat pipe is filled with a high thermal conductivity working fluid, and its thermal conductivity can reach more than 10000W / (m·K), which can quickly transfer the heat generated by the lamp to the heat sink fins; the surface area of ​​the heat sink fins has been optimized and designed to be no less than 100cm², which can effectively dissipate heat to the surrounding environment, ensuring that the xenon lamp maintains stable luminous performance during long-term operation and meets the specific light band and intensity requirements required for medical beauty.

[0011] Furthermore, the pulse width modulation (PWM) technology of the energy control unit adopts a high-precision timer and comparator circuit; the clock frequency accuracy of the timer is as high as ±0.001%, which can accurately control the period and duty cycle of the PWM signal; the offset voltage of the comparator is less than 1mV, which can accurately compare the input reference voltage and the modulation signal to ensure the accuracy and stability of the generated PWM signal; at the same time, the energy control unit also integrates current feedback and voltage feedback loops, which can monitor the current and voltage signals provided to the light source in real time; the sampling resistance accuracy of the current feedback loop is ±0.1%, and the voltage divider resistance accuracy of the voltage feedback loop is ±0.05%. Through the precise collection and processing of the feedback signal, the dynamic adjustment of the energy output of the light source can be achieved; when it is detected that the energy output of the light source deviates from the set value, the control unit can quickly adjust the duty cycle of the PWM signal within 10μs to restore the energy output to the target value, thereby achieving fine control of the energy output of the light source and ensuring the stable operation of the device and precise energy output effect.

[0012] Furthermore, the touch display screen on the control panel adopts capacitive touch screen technology, and its touch response time does not exceed 5ms, with extremely high touch sensitivity and accuracy; the display panel of the display screen adopts organic light-emitting diode technology, which has the advantages of self-luminescence, high contrast and wide viewing angle; its contrast can reach above 10000:1, and the viewing angle range is not less than 170° in both horizontal and vertical directions, and it can clearly and brightly display various working status information and operation interfaces of the device; in addition, the touch display screen also has anti-fingerprint and anti-glare processing functions, and its surface is coated with a special nano-coating, which can effectively reduce fingerprint residue and glare, and improve the visibility and comfort of user operation; at the same time, the display screen and the processor communicate through a high-speed MIPI interface, and the data transmission rate can reach above 1Gbps, ensuring the rapid transmission and update of operating instructions and display data, making it convenient for users to intuitively set the target output energy Jt and view the working status information of the device, thereby improving the user experience.

[0013] Furthermore, the rechargeable lithium battery adopts advanced lithium-ion polymer battery technology; its positive electrode material uses high-energy-density ternary materials with a specific capacity of not less than 180mAh / g, and the negative electrode material uses silicon-based composite materials with a specific capacity of up to 400mAh / g, thereby significantly improving the energy density of the battery; in the battery packaging structure, a flexible aluminum-plastic film packaging technology is adopted, which has good sealing and safety, and can effectively prevent electrolyte leakage and battery bulging; at the same time, the battery management system has an intelligent charging control function, which can automatically adjust the charging current and voltage according to the current state of the battery; in the initial charging stage, a constant current charging mode is adopted, and the charging current does not exceed 1C. When the battery voltage reaches the set upper limit, it automatically switches to a constant voltage charging mode, and the charging voltage accuracy is controlled within ±0.05V to ensure that the battery is charged in a safe and efficient state; in addition, the BMS also monitors the temperature, voltage and current parameters of the battery in real time. Once an abnormal overcharge, over-discharge or short circuit is detected, the battery circuit can be quickly cut off within 1ms, and corresponding protection measures are initiated to ensure that the device can provide stable power supply for a long time while ensuring safety in use.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By establishing a relative mapping relationship between the light source output energy and the light perception signal, the energy size corresponding to the light perception signal integral value is obtained. At the same time, according to the characteristic that the light perception signal is proportional to the light source output energy, the light perception target integral value corresponding to any target output energy can be calculated; When energy output is required, it is only necessary to integrate the light sensing signal at the beginning of the output. When the integral value is equal to the target integral value, the energy output is completed and the energy control device can be turned off. This solution can achieve precise control of the output energy of flash-type light source medical beauty products. It has low implementation cost and precise control, and can avoid the influence of the attenuation characteristics of lossy devices, greatly improving the stability of the product and ensuring the consistency of medical beauty effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a principle block diagram of the light source medical beauty device with precise energy output of the present invention; Figure 2 This is a block diagram of the principle of the calibration process of the light source medical beauty device with precise energy output of the present invention; Figure 3 It is a logic diagram of the calibration process of the light source type medical beauty device with precise energy output of the present invention; Figure 4 It is a logic step diagram of the precise energy output process of the light source type medical beauty device with precise energy output of the present invention; Figure 5 It is a front perspective schematic diagram of the appearance of the precise energy output light source medical cosmetic device of the present invention; Figure 6 It is a three-dimensional schematic diagram of the back appearance of the light source type medical beauty device with precise energy output of the present invention.

[0016] In the figure: 1. main body; 2. control panel; 3. light source. DETAILED DESCRIPTION

[0017] See also Figure 1-6 The present invention provides a technical solution: a control method and device implementation method of a light source medical beauty product with precise energy output The light source type medical cosmetic device with precise energy output mainly includes components such as a main body 1, a control panel 2, a light source 3, a light sensor, a signal conversion unit, an energy control unit, a processor and a power supply.

[0018] The main body 1 is made of high-strength, lightweight engineering plastic material, has good mechanical stability and insulation performance, and its appearance design conforms to ergonomic principles, making it convenient for operators to hold it or place it in a suitable treatment position.

[0019] The control panel 2 is mounted on the main body 1 and is designed by combining a high-resolution display screen with a capacitive touch panel.

[0020] Light source 3 is a xenon lamp tube, and its electrode adopts a special yttrium barium copper oxide YBCO superconducting ceramic coating, which can significantly reduce the resistance loss of the electrode during high current discharge, improve the service life and discharge stability of the electrode, and multiple groups of translucent lamp heads achieve uniform irradiation. The tube wall of the lamp tube is made of high-purity quartz glass with a purity of 99.999%. Within the wavelength range of 400-1200nm, the light transmittance is as high as more than 98%, ensuring that the effective light emitted by the light source can efficiently act on the treatment site.

[0021] The light sensor uses the SFH2706 high-sensitivity photodiode produced by Osram of Germany. The spectral response of this photodiode in the wavelength range of 400-1200nm is as high as 0.6A / W, and the dark current is as low as 1nA. It can accurately sense the changes in the light intensity emitted by the light source and convert it into a weak electrical signal output.

[0022] The signal conversion unit uses the ADS1256 24-bit high-precision ADC chip from Texas Instruments. The chip has an extremely low noise level, and its equivalent input noise voltage is only 20nV / √Hz. It can accurately convert the weak analog electrical signal output by the light sensor into a digital signal with a conversion accuracy of ±0.0001%. At the same time, the chip integrates a programmable gain amplifier that can automatically adjust the gain according to the amplitude of the light sensor output signal to ensure that the input signal is always in the optimal conversion range.

[0023] The energy control unit is based on Infineon's TLE8209-5ES intelligent power driver. The driver has a continuous output current capability of up to 5A and a peak output current capability of 10A, and can quickly and stably provide the required driving voltage and current for the xenon lamp. It integrates an advanced pulse width modulation (PWM) controller, and the PWM frequency can be accurately adjusted within the range of 10kHz-100kHz. The energy output to the xenon lamp is accurately controlled by adjusting the duty cycle of the PWM signal.

[0024] The processor is the STM32F767 microcontroller from STMicroelectronics. The microcontroller is based on the ARMCortex-M7 core, with a main frequency of up to 216MHz. It integrates 1MB of Flash memory and 512KB of SRAM memory, and has powerful data processing and storage capabilities. It is also equipped with a variety of peripheral interfaces, such as a high-speed SPI interface for communicating with the ADC chip, a general timer for accurately controlling the flash time and signal integration time, and a UART interface for data transmission and debugging with external devices.

[0025] The power source is Samsung's INR18650-30Q rechargeable lithium-ion battery. The battery has a rated capacity of 3000mAh and a nominal voltage of 3.6V, which can provide a stable power supply for the device. The battery pack is equipped with a professional battery management system (BMS). The BMS uses Texas Instruments' BQ769X0 series chips, which can monitor the battery's voltage, current, temperature and other parameters in real time, and realize overcharge protection, over-discharge protection, short-circuit protection and battery balancing functions to ensure the safe use and long life of the battery.

[0026] When conducting the calibration process, first ensure that the device is in a stable working environment, with the ambient temperature controlled at 25℃±2℃ and the relative humidity maintained at 40%-60%. Accurately align the external standard energy detection instrument with the light source output end of the device to ensure the accuracy of light energy collection.

[0027] The processor sends a flash trigger signal to the energy control unit. The energy control unit provides energy to the xenon lamp according to the preset initial driving parameters, with an initial voltage of 500V and an initial current of 1A, so that it performs a flash operation. During the flash process, the light sensor senses the change in light intensity in real time and outputs a corresponding electrical signal. The electrical signal is accurately converted by the signal conversion unit and transmitted to the processor. The processor uses its internal timer module to accurately record the start time of the flash. and end time In this embodiment, the flash duration is about 10ms. =0ms, =10ms.

[0028] At the same time, the external standard energy detection instrument collects the energy value output by the flash . Assume that in this calibration, the energy value detected is =10J. After receiving the light sensor output signal and the data of the energy detection instrument, the processor uses its built-in mathematical operation unit to calculate the to The collected photoelectric signal Perform integration operation. In the integration process, the trapezoidal integration method is used to divide the flash time interval into 1000 equal parts, each time interval is 0.01ms, and the average value of the light-sensing signal in each time interval is calculated in turn, and multiplied by the time interval, and finally accumulated to obtain the integral value. Assume that after calculation, the light-sensing integral value is 5V·ms.

[0029] , calculate the mapping coefficient In order to improve the accuracy of calibration, the above calibration process is repeated 10 times, and the driving parameters of the energy control unit are changed each time to obtain 10 sets of data, and linear regression analysis is performed on these 10 sets of data. If the linear correlation coefficient is greater than 0.999, the calibration result is considered valid, and its average value is taken as the final mapping coefficient k; otherwise, check whether the various components of the device are working normally and recalibrate.

[0030] The user sets the target output energy through the touch interface on the control panel For example, in this treatment, the user sets the target output energy according to the treatment needs. The processor outputs energy according to the determined mapping coefficient k and the target , according to the formula Calculate the light perception target integral value .

[0031] The processor sends a start signal to the energy control unit, and the energy control unit provides driving energy for the light source according to the preset start parameters, with a start voltage of 450V and a start current of 0.9A, so that the light source performs flashing operation. At the same time, the processor starts the internal timer and integral operation module to sample and integrate the light output signal at a sampling frequency of 100kHz. During the integration process, the processor judges the current integral value once every 100 sample points are collected.

[0032] When it is determined that the integral value of the light-sensing signal reaches the calculated light-sensing target integral value s, the processor immediately sends a shutdown signal to the energy control unit, and the energy control unit quickly cuts off the energy supply to the light source within 10μs to stop the light source flashing. During the entire energy output control process, the processor monitors the working status of the system in real time. The operating temperature of the light source is monitored by the temperature sensor connected to the xenon lamp tube (using the TMP117 high-precision digital temperature sensor with a measurement accuracy of ±0.1℃). If the light source temperature is detected to exceed 80℃, the processor will reduce the output power of the energy control unit and display an over-temperature alarm message on the control panel to remind the user to check the device or suspend use.

[0033] At the same time, the processor monitors the stability of energy output by detecting the voltage and current sensors (INA226 high-precision current / voltage monitoring chip, voltage measurement accuracy up to ±0.05%, current measurement accuracy up to ±0.1%) at the output end of the energy control unit. If the voltage fluctuation exceeds ±0.5% or the current fluctuation exceeds ±0.5%, the processor will adjust the PWM signal duty cycle of the energy control unit to stabilize the output within the set range.

[0034] In addition, the processor also maintains communication connection with external devices. The device's operating parameters (energy output value of each flash, light source temperature, and working status of the energy control unit) are uploaded to the remote server in real time through the Wi-Fi module, so that doctors or technicians can remotely monitor the device's working conditions and conduct data analysis.

[0035] During the long-term use of the device, in order to deal with the attenuation problem of lossy components, the processor regularly recalibrates the relationship between the light source energy and the photosensitive signal after every 100 flash operations. The specific calibration process is the same as the initial calibration process mentioned above, but during recalibration, the adjustment range of the drive parameters will be optimized based on the previous calibration history data to speed up the calibration speed and improve the calibration accuracy. For example, if the previous calibration results show that the mapping coefficient k is gradually decreasing, indicating that the light source or light sensor may have performance attenuation, then during recalibration, the initial drive voltage and current of the energy control unit will be appropriately increased, the adjustment step will be reduced, and the focus will be on the changes in the k value within a smaller range to ensure that the impact of device attenuation can be discovered and compensated in a timely manner, and the precise energy output performance of the device is always maintained.

[0036] In terms of software, the entire control method is implemented based on an embedded real-time operating system (RTOS), and FreeRTOS is selected as the development platform. In the FreeRTOS environment, multiple tasks are created to handle different functional modules, such as one task responsible for touch operation and display interaction with the control panel, one task responsible for communication with external devices, and one task responsible for the core algorithm of energy control and signal processing.

[0037] For the signal integration algorithm, in addition to the trapezoidal integration method mentioned above, the Kalman filter algorithm is also used to pre-process the light-sensing signal. The Kalman filter algorithm can effectively suppress the noise in the signal based on the historical data and current measurement value of the signal, thereby improving the signal-to-noise ratio of the signal. During the integration process, the parameters of the Kalman filter are dynamically adjusted to adapt to the signal characteristics under different light intensities and flash frequencies, further improving the accuracy of the integration results.

[0038] In the energy control algorithm, an adaptive PID control algorithm is used to adjust the output of the energy control unit. The proportional coefficient (P), integral coefficient (I) and differential coefficient (D) of the PID controller are adaptively adjusted according to the real-time working state of the device. For example, when it is detected that the energy output of the light source deviates greatly from the target energy, the proportional coefficient P is appropriately increased to speed up the response speed of the system; when the system is close to the target energy, the proportional coefficient P is reduced and the integral coefficient I is increased to improve the steady-state accuracy of the system and avoid overshoot of energy output. By continuously adjusting the PID parameters, the system can quickly and stably reach the target energy output and maintain it within a high control accuracy range.

[0039] In order to improve the operating efficiency and reliability of the software, the modular design principle is followed during the code writing process, and each functional module is encapsulated into an independent function or library file. At the same time, key code segments are optimized, such as using inline functions and register variables to reduce function call overhead and memory access time. During the debugging and testing phase of the program, professional debugging tools are used to perform single-step debugging, breakpoint debugging and performance analysis on the software, so as to promptly discover and solve vulnerabilities and performance bottlenecks in the software, ensure that the software can run stably and efficiently on the hardware platform, and realize precise energy output control of light source medical beauty products.

[0040] When assembling the device, first install the light source 3 on the front heat dissipation bracket of the main body 1. The heat dissipation bracket is made of aluminum alloy, and the surface is anodized, which has good heat dissipation performance and corrosion resistance. The xenon lamp tube is tightly fitted to the heat dissipation bracket through thermal conductive silicone to ensure that the heat generated by the lamp tube during operation can be quickly conducted to the heat dissipation bracket and dissipated.

[0041] Next, install the light sensor on a special mounting base near the light source. The mounting base is made of black engineering plastic, which can effectively reduce the interference of light reflection on light sensor measurement. The installation position of the light sensor is precisely designed so that it can fully receive the light emitted by the light source while avoiding the influence of external stray light. During the installation process, a high-precision positioning fixture is used to ensure that the relative position accuracy of the light sensor and the light source is within ±0.5mm.

[0042] Then, the circuit boards such as the signal conversion unit, the energy control unit and the processor are installed in the circuit board slots inside the main body 1 and fixed with screws. When installing the circuit board, make sure that each interface is connected correctly and firmly to avoid problems such as cold soldering and short circuit. At the same time, a shielding cover is arranged between the circuit boards. The shielding cover is made of stainless steel, which can effectively reduce the impact of electromagnetic interference on the circuit operation.

[0043] After completing the hardware assembly, the device is debugged. First, charge and test the power supply to check whether the battery's charging performance and output voltage are normal. Use professional battery testing equipment to perform charge and discharge cycle tests on the battery, monitor the battery's capacity, internal resistance, voltage and other parameters at different charge and discharge rates to ensure that the battery performance meets the design requirements.

[0044] Next, program the processor and perform functional testing. Download the written control program to the processor's Flash memory through the JTAG interface or SWD interface. During the download process, use the checksum algorithm to verify the integrity of the program to ensure that the program is correctly burned into the chip. After the burning is completed, start the device and check whether the display of the control panel is normal, whether the touch operation is sensitive, and whether the various indicator lights are working properly.

[0045] Then, calibrate and test the light source and light sensor. Use a standard light source to calibrate the light sensor, and adjust the gain and bias parameters of the light sensor so that its output signal can accurately reflect the actual light intensity of the light source. During the calibration process, use a high-precision multimeter to measure the output voltage of the light sensor and compare it with the known light intensity of the standard light source. By adjusting the parameters of components such as resistance and capacitance in the light sensor circuit, the linear relationship between the output voltage of the light sensor and the light intensity meets the design requirements.

[0046] For the light source, use a spectrum analyzer to analyze and test its luminous spectrum. Check whether the spectrum of light emitted by the xenon lamp is within the range of 400-1200nm, and whether the intensity of each wavelength component is as expected. If the spectrum is abnormal, such as obvious peak shift or uneven intensity, check the operating voltage, current and gas filling of the xenon lamp, and adjust or replace it.

[0047] Conduct a comprehensive test on the energy output control function of the entire device. According to the above calibration process and precise energy output control process, set different target output energy values, and use external standard energy detection instruments to measure and record the energy actually output by the device. Compare the deviation between the actual output energy and the target output energy, and conduct multiple tests under different working conditions to ensure that the energy output accuracy of the device is within ±0.05J to meet the requirements of medical aesthetic applications. If it is found that the energy output deviation exceeds the allowable range, check the working status of each component, adjust and optimize the relevant parameters until the energy output accuracy of the device reaches the design index.

[0048] In the application scenario of skin whitening treatment, low energy but high frequency flash stimulation is usually required. According to this requirement, the target output energy is set in the parameter setting of the device. Adjust between 3J-5J, and set the flash frequency to 10Hz-20Hz. At the same time, in order to adapt to frequent flash operations, optimize the drive circuit of the energy control unit, increase the capacity of the energy storage capacitor, and select a tantalum capacitor with a capacity of 1000μF to improve the rapid charge and discharge capability of energy, ensuring stable energy output under high-frequency flash.

[0049] In hair removal treatment applications, since higher energy is required to destroy hair follicles, the target output energy The setting is between 15J-25J, and the flash frequency is relatively low, 1Hz-5Hz. In order to ensure the safety and effectiveness of high energy output, the heat dissipation structure of the xenon lamp is strengthened. The number and area of ​​the heat dissipation fins on the heat dissipation bracket are increased. The heat dissipation fins are made of copper, with a thickness of 2mm and a spacing of 3mm. The total surface area is increased by more than 50%, which effectively reduces the temperature of the lamp tube at high energy output and prevents the lamp tube from shortening its life or performance degradation due to overheating.

[0050] In the application scenario of freckle removal, the energy output needs to be precisely controlled according to the type and depth of the freckles. For shallow freckles, the target output energy Set between 8J-12J; for deep pigmentation, The setting is between 18J and 22J. At the same time, combined with image recognition technology, a high-definition camera is installed on the device to shoot the treatment area, and the image processing algorithm is used to analyze the location, area, color depth and other information of the spots, and transmit this information to the processor. The processor automatically adjusts the energy output and irradiation range of the light source according to the analysis results to achieve accurate personalized treatment. During the irradiation process, the partition irradiation method is adopted. For the area with dense spots, the flash frequency is appropriately reduced but the energy of each flash is increased. For the surrounding normal skin area, the energy output is reduced or irradiation is avoided to minimize the damage to the normal skin.

[0051] In the application scenario of acne treatment, since Propionibacterium acnes is more sensitive to light of a specific wavelength, the spectrum of the light source needs to be optimized. A narrow-band filter is added to the front end of the xenon lamp to concentrate the emitted light in the 405-420nm blue light band, which has a strong bactericidal effect on Propionibacterium acnes. At the same time, the target output energy The setting is between 5J-10J, and the flash frequency is 5Hz-10Hz. In order to improve the treatment effect, a negative ion generator is integrated in the device, which releases negative ions during the treatment process to promote skin metabolism and inflammation absorption. The negative ion production of the negative ion generator can be adjusted between 1 million and 5 million ions / cm³, and it can be adjusted appropriately according to the patient's skin condition and treatment response.

[0052] In different usage environments, the implementation method of the device also needs to be adjusted accordingly. In high temperature environments, strengthen the heat dissipation measures of the device. In addition to optimizing the heat dissipation structure, add a cooling fan. The speed of the cooling fan can be automatically adjusted according to the feedback of the temperature sensor. The maximum speed can reach 5000rpm to ensure that the internal temperature of the device does not exceed 50°C and the normal working performance of each component is guaranteed. In a high humidity environment, the outer shell of the device is treated with moisture-proof treatment, and nano-waterproof coating technology is used to form a waterproof layer with a thickness of 10-20μm on the surface of the outer shell to prevent moisture from entering the interior of the device and affecting the electrical performance. At the same time, key components such as light sensing and energy control units are sealed with silicone sealing rings to ensure that the device can still operate stably in a high humidity environment.

[0053] In areas with higher altitudes, the discharge characteristics of xenon lamps will change due to lower air pressure. At this time, the output parameters of the energy control unit need to be adjusted. By building a built-in air pressure sensor in the device to monitor the ambient air pressure in real time, when the air pressure is lower than 800hPa, the processor automatically increases the output voltage and current of the energy control unit according to the preset air pressure-energy compensation curve to compensate for the reduced luminous intensity of the lamp caused by the lower air pressure, ensuring that the energy output accuracy of the device at different altitudes remains within the design range.

[0054] In order to ensure the stability and reliability of the device under long-term continuous use, an automatic sleep and wake-up function is added. After the device has been working continuously for 30 minutes, if there is no new operation instruction, the processor will automatically control the device to enter the sleep state, shut down other unnecessary circuit modules except the power management module, and reduce power consumption. In the sleep state, the power consumption of the device is reduced to less than 10% of the normal working state. When there is a new operation instruction, the device can wake up quickly within 1 second, return to the normal working state, and continue the energy output control and treatment operation, which improves the convenience of use and energy utilization efficiency of the device.

[0055] The device can also be personalized for users with different skin types. By adding a skin type selection function on the control panel, users can choose the corresponding treatment mode according to their skin type. In different treatment modes, the device will automatically adjust the energy output parameters and irradiation time. For example, for sensitive skin, while ensuring the treatment effect, the energy output intensity can be appropriately reduced, the irradiation time interval can be increased, and the irritation to the skin can be reduced; for oily skin, the energy output intensity can be appropriately increased and the treatment cycle can be shortened to achieve better oil control and cleansing effects. At the same time, the device can also record the user's treatment history data, including parameter settings for each treatment, treatment effects and other information, to provide reference and optimization basis for subsequent treatments.

[0056] In the scenario of working in collaboration with other medical cosmetic equipment, this device can exchange data and conduct linkage control with other equipment through the communication interface. For example, when connected to a skin detection device, it receives detailed data such as skin moisture, elasticity, and pigment distribution sent by the skin detection device, and further optimizes the energy output and treatment plan of the light source based on these data. When working in collaboration with a microneedle introduction device, the irradiation time and energy intensity of the light source are adjusted according to the depth of microneedle introduction and the type of drug, to promote drug absorption and skin repair. Through this collaborative working mode, the organic combination of multiple medical cosmetic technologies is achieved, improving the treatment effect and user experience.

Claims

1. A method for controlling a light source medical beauty product with precise energy output, characterized in that: The following steps are involved: Calibration process of the relationship between light source energy and photosensitive signal: Under the control of the product processor, the energy control device drives the light source to perform a flash operation; at the same time, the external standard energy detection instrument collects the energy value output by the flash , the light sensor senses the flash process in real time and outputs the corresponding electrical signal The electrical signal is converted by the signal conversion unit and then transmitted to the processor for collection; the processor collects the data from the start time of the flash process. Until the end time The collected photoelectric signal Perform integral operation, and then according to the formula Determine the mapping coefficient between light perception integral value and energy output ; Precise energy output control process: pre-set target output energy , the processor uses the determined mapping coefficients and target output energy , according to the formula Calculate the light perception target integral value ; Subsequently, the processor sends a start signal to the energy control unit to make the light source flash and simultaneously integrate the light output signal again; during the integration process, the processor continuously monitors the light signal integration value, and once the integration value reaches the calculated light target integration value , a shutdown signal is immediately sent to the energy control unit to terminate the flashing of the light source, thereby achieving precise energy output control.

2. A light source medical cosmetic device with precise energy output, wherein the device realizes precise control of the light source output energy through the control method described in claim 1, ensures that the energy output of each flash meets the set target energy value, effectively overcomes the energy output uncertainty problem caused by the attenuation characteristics of lossy devices in the prior art, improves product performance and the stability of medical cosmetic effects, and is characterized in that: include: A main body (1) and a control panel (2) mounted on the main body (1); a light source (3) is mounted at the front end of the main body (1) and is capable of emitting light for medical cosmetology; It also includes: a light sensor, which is arranged inside the product near the light source, and is used to sense the intensity of the light emitted by the light source, and convert the sensing result into a voltage, current or digital signal output, and the amplitude of the output signal is proportional to the output energy intensity of the light source; A signal conversion unit, which is connected to the light sensor and the processor, and is used to convert the signal output by the light sensor into a signal form that can be recognized and processed by the processor; An energy control unit is connected to the processor and the light source, and provides a driving voltage or current signal to the light source according to a switch signal or control command issued by the processor, so as to control the lighting and extinguishing of the light source; The processor, as the control core of the entire device, is responsible for identifying and collecting signals from the signal conversion unit, performing logical operations and processing, and outputting control signals to the energy control unit; The power supply provides a stable power supply to various components within the device.

3. The control method of light source medical beauty products with precise energy output according to claim 1, characterized in that: The external standard energy detection instrument adopts a combination of a high-precision photoelectric detector and an integrating sphere system; the photoelectric detector has an extremely low noise level and can accurately capture the weak light signal emitted by the light source under complex ambient light interference; the inner surface of the integrating sphere system is coated with a material with high reflectivity and excellent diffuse reflection performance, with a reflectivity of more than 99%, ensuring that the light is evenly mixed in the sphere, so that the uncertainty of the collected energy value J is controlled within ±0.5%; at the same time, the detection instrument is equipped with an advanced signal conditioning circuit, which can amplify and filter the collected signal, and its gain can be accurately adjusted in the range of 1-1000, and the cut-off frequency can be flexibly set between 1Hz-10kHz, which further improves the accuracy and stability of energy value collection and lays a solid foundation for the subsequent accurate calculation of the mapping coefficient k.

4. The control method for light source medical beauty products with precise energy output according to claim 1, characterized in that: The high-sensitivity photodiode selected for the light sensing is based on a special semiconductor material structure design; It adopts a multi-layer heterojunction structure and achieves high absorption efficiency and fast response characteristics for specific wavelengths of light by precisely controlling the doping concentration and thickness of each layer of materials. Within the commonly used light band of 400-1200nm for medical cosmetology, its quantum efficiency is as high as over 80%, and it can efficiently convert weak light signals into electrical signals. In addition, the photodiode also integrates a temperature compensation circuit, which can monitor its own operating temperature in real time and automatically compensate and correct the output signal according to the preset temperature-response curve. Within the ambient temperature range of -10℃-50℃, the drift of its output signal does not exceed 0.1% of the full scale, ensuring that the flash process can be stably and accurately sensed and the corresponding electrical signal v can be output under different usage environments, effectively improving the reliability of the entire control system.

5. The control method of light source medical beauty products with precise energy output according to claim 1, characterized in that: The ADC chip used in the signal conversion unit is a high-precision, low-power successive approximation chip; it integrates a high-precision reference voltage source inside, and the voltage stability is better than ±0.01%, providing a stable reference voltage for analog signal conversion; the chip also has an automatic calibration function, which can automatically calibrate the conversion error at each startup or regular operation, and control the nonlinear error within ±0.005%; at the same time, in order to improve the reliability and anti-interference ability of data transmission, the signal conversion unit uses a high-speed differential signal transmission line between the ADC chip and the processor, and its transmission rate can reach more than 100Mbps, and it has good electromagnetic shielding performance, which can effectively suppress the influence of external electromagnetic interference on the converted digital signal, ensure that the accuracy of the signal transmitted to the processor meets the precise control requirements, and ensure the accuracy of the entire control process.

6. The method for controlling a light source medical cosmetic product with precise energy output according to claim 1, characterized in that: The ARM architecture processor selected by the processor has multi-core processing capability and the number of cores is not less than 4; each core adopts an advanced superscalar pipeline architecture with an instruction-level parallelism of more than 4, and can execute multiple instructions simultaneously in one clock cycle, greatly improving the computing efficiency; it has a large-capacity high-speed cache integrated inside, with a first-level cache capacity of not less than 32KB and a second-level cache capacity of not less than 512KB, and adopts an intelligent cache management strategy, which can automatically adjust the cache content according to the access frequency and locality principle of the data to reduce data access delay; in addition, the processor is also equipped with a dedicated hardware floating-point unit that supports IEEE754 standard floating-point operations, and its floating-point operation performance reaches more than 1000 MFLOPS per second, which can quickly and accurately complete complex integral operations and logic processing, ensure the efficient execution of the control process, and meet the requirements of light source medical beauty products for fast and precise control of energy output.

7. The light source medical cosmetic device with precise energy output according to claim 2, characterized in that: The electrodes of the xenon lamp are made of iridium-yttrium alloy material that is resistant to high temperature and corrosion. The melting point of this alloy material is as high as 2400°C, and it has good stability in the high temperature environment generated by xenon discharge, which can effectively prevent the ablation and deformation of the electrode and extend the service life of the xenon lamp. At the same time, the tube wall of the lamp is made of quartz glass, the purity of which is not less than 99.99%, and it has extremely high transmittance for light in the 400-1200nm band, which can reach more than 95%, and has good thermal stability and mechanical strength, and can withstand the thermal stress and pressure when the lamp is working. changes; in addition, the xenon lamp is also equipped with an efficient heat dissipation structure, which adopts a combination of heat pipe heat dissipation technology and aluminum alloy heat sink fins; the heat pipe is filled with a high thermal conductivity working fluid, and its thermal conductivity can reach more than 10000W / (m·K), which can quickly transfer the heat generated by the lamp to the heat sink fins; the surface area of ​​the heat sink fins has been optimized and designed to be no less than 100cm², which can effectively dissipate heat to the surrounding environment, ensuring that the xenon lamp maintains stable luminous performance during long-term operation and meets the specific light band and intensity requirements required for medical beauty.

8. The light source medical cosmetic device with precise energy output according to claim 2, characterized in that: The pulse width modulation (PWM) technology of the energy control unit adopts a high-precision timer and comparator circuit; the clock frequency accuracy of the timer is as high as ±0.001%, which can accurately control the period and duty cycle of the PWM signal; the offset voltage of the comparator is less than 1mV, which can accurately compare the input reference voltage and the modulation signal to ensure the accuracy and stability of the generated PWM signal; at the same time, the energy control unit also integrates current feedback and voltage feedback loops, which can monitor the current and voltage signals provided to the light source in real time; the sampling resistance accuracy of the current feedback loop is ±0.1%, and the voltage divider resistance accuracy of the voltage feedback loop is ±0.05%. Through the precise collection and processing of the feedback signal, the dynamic adjustment of the energy output of the light source can be achieved; when it is detected that the energy output of the light source deviates from the set value, the control unit can quickly adjust the duty cycle of the PWM signal within 10μs to restore the energy output to the target value, thereby achieving fine control of the energy output of the light source and ensuring the stable operation of the device and precise energy output effect.

9. The light source medical cosmetic device with precise energy output according to claim 2, characterized in that: The touch display screen on the control panel adopts capacitive touch screen technology, and its touch response time does not exceed 5ms, with extremely high touch sensitivity and accuracy; the display panel of the display screen adopts organic light-emitting diode technology, which has the advantages of self-luminescence, high contrast and wide viewing angle; its contrast can reach above 10000:1, and the viewing angle range is not less than 170° in both horizontal and vertical directions, and it can clearly and brightly display various working status information and operation interfaces of the device; in addition, the touch display screen also has anti-fingerprint and anti-glare processing functions, and its surface is coated with a special nano-coating, which can effectively reduce fingerprint residue and glare, and improve the visibility and comfort of user operation; at the same time, the display screen and the processor communicate through a high-speed MIPI interface, and the data transmission rate can reach above 1Gbps, ensuring the rapid transmission and update of operating instructions and display data, making it convenient for users to intuitively set the target output energy Jt and view the working status information of the device, thereby improving the user experience.

10. The light source medical cosmetic device with precise energy output according to claim 2, characterized in that: The rechargeable lithium battery adopts advanced lithium ion polymer battery technology; its positive electrode material uses high energy density ternary material with a specific capacity of not less than 180mAh / g, and the negative electrode material uses silicon-based composite material with a specific capacity of up to 400mAh / g, thereby significantly improving the energy density of the battery; in the battery packaging structure, a flexible aluminum-plastic film packaging technology is adopted, which has good sealing and safety, and can effectively prevent electrolyte leakage and battery bulging; at the same time, the battery management system has an intelligent charging control function, which can automatically adjust the charging current and voltage according to the current state of the battery; in the initial charging stage, a constant current charging mode is adopted, and the charging current does not exceed 1C. When the battery voltage reaches the set upper limit value, it automatically switches to a constant voltage charging mode, and the charging voltage accuracy is controlled within ±0.05V, ensuring that the battery is charged in a safe and efficient state; in addition, the BMS also monitors the temperature, voltage and current parameters of the battery in real time. Once an abnormal situation of overcharging, over-discharging or short circuit is detected, the battery circuit can be quickly cut off within 1ms, and corresponding protection measures are initiated to ensure that the device can provide stable power supply for a long time while ensuring safety in use.

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