Output monitoring and adjusting method and system of intense pulsed light therapeutic apparatus

Abstract

The invention is suitable for the field of intense pulsed light treatment technology improvement, and provides an output monitoring and adjusting method and system of an intense pulsed light therapeutic apparatus, the method is realized through a dual-single-chip microcomputer cooperative control architecture, and a first single-chip microcomputer is responsible for generating a preset pulse string control waveform; the second single-chip microcomputer is responsible for real-time safety monitoring. The temperature rise rate of a treatment part is calculated in real time, the overtemperature risk is predicted, the output time sequence is adjusted by dynamically inserting a turn-off interval in a pulse string, and energy consistency and treatment safety are ensured; the light output duration is monitored through a photoelectric sensor, and continuous output caused by out-of-control of a program is prevented; overcurrent protection is carried out through a current sensor; meanwhile, the light emitting frequency of the xenon lamp is recorded and aging compensation capability is possessed. The problems of treatment interruption, potential safety hazards and xenon lamp aging in the prior art are effectively solved, and the treatment efficiency, safety and reliability of equipment are remarkably improved.

Description

A method and system for monitoring and adjusting the output of an intense pulsed light therapy device Technical Field

[0001] This invention belongs to the field of medical device technology improvement, and in particular relates to an output monitoring and adjustment method and system for a high pulsed light therapy device. Background Technology

[0002] Intense pulsed light (IPL) therapy devices are widely used in the field of medical aesthetics. They treat skin diseases or improve skin texture by emitting intense light of a specific wavelength in a single or periodic manner. The basic working method is to set the pulse width, sub-pulse interval, and energy parameters, use a foot switch as a trigger signal, control the connection to the xenon lamp power supply through the pulse signal, and finally release light energy through the xenon lamp on the handle.

[0003] In existing intense pulsed light (IPL) therapy devices, the sub-pulse width and sub-pulse interval constitute a pulse train. The pulse train output is controlled by a microcontroller timer. During the sub-pulse width, the microcontroller outputs a high level to enable light energy output; during the sub-pulse interval, the microcontroller outputs a low level to disable light energy output. However, this technical solution has the following drawbacks: existing control schemes typically use a single microcontroller to implement the pulse train output. During the sub-pulse width, the microcontroller outputs a high level to enable light energy output; during the sub-pulse interval, it outputs a low level to disable output. However, this approach has the following significant drawbacks: During treatment, if the temperature at the treatment site is detected to be too high, existing solutions typically employ a "one-size-fits-all" approach of immediately stopping the light energy output. This not only interrupts the treatment process but also, to avoid further overheating, often reduces energy output in subsequent treatments, directly impacting the treatment effect. If the microcontroller program malfunctions or becomes uncontrollable, it may cause the light energy to continuously output at a high level, posing a serious safety hazard of burning the patient. As a consumable device, the xenon lamp has a limited number of light outputs; long-term use may result in insufficient energy, and its performance will degrade with each additional light output. Existing equipment lacks effective recording of the number of times the xenon lamp is used at the handpiece end, and a quality assessment and compensation mechanism based on this, affecting the consistency and reliability of treatment. Relying solely on time monitoring to prevent continuous light energy output lacks coordinated protection through energy / current monitoring, and the integration of the physical emergency stop mechanism is insufficient, leaving safety in extreme situations requiring improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for monitoring and adjusting the output of an intense pulsed light therapy device, in order to solve the above-mentioned technical problems.

[0005] This invention is implemented as follows: an output monitoring and adjustment method for an intense pulsed light (IPL) therapy device. The method includes the following steps: S1. Constructing a dual-microcontroller control architecture, where the first and second microcontrollers output logic levels to the control module. The control module performs a logical AND operation on the two logic level signals and outputs the result to the photon power supply. A high level enables the photon power supply output, and a low level disables it. Under normal circumstances, the signal output from the second microcontroller to the control module is high, and the logic level output from the first microcontroller is consistent with the output level of the control module. The first and second microcontrollers achieve timing synchronization through a UART communication mechanism. S2. Based on the user-set cooling temperature, the cooling module operates and maintains the set temperature. When the temperature deviates from the set cooling temperature, the greater the deviation, the greater the output power of the cooling module. When the detected temperature is greater than 10°C, the cooling module outputs full power, with an output voltage of approximately 14V and a current of 15A. During treatment, the temperature module detects the temperature of the treatment site in real time with a detection cycle of 1000µs, calculating the temperature rise rate Ktemp = (temp2 - ... temp1) / 1000us; At time Ts, if the acquired temperature Ts1 < 39℃, pulse control is performed according to the preset value; if Ts1 > 39℃ and the temperature is determined to be at the end of the current sub-pulse, temperature = (T_end - Ts) * K1 + Ts1 > 42℃, then at time Ts, the signal output by the second microcontroller to the control module is inserted at a low level, and the low-level insertion time is T. 插1 =(Ts1-38) / K1*1000us, waiting for Ts+T 插1 At time S1, the second microcontroller resumes outputting a high-level pulse; the first microcontroller monitors the feedback signal in real time. If the first microcontroller outputs a high level while the feedback signal is low, it records T-interpolation 1. After the last sub-pulse interval completes its output, it executes a high-level output for the T-interpolation 1 time period; S3, the photoelectric signal is converted into an electrical signal by the photoelectric sensor. When the second microcontroller detects the rising edge of the photoelectric sensor signal, it starts timing. If a high level is detected continuously for 6.5ms, it determines that the first microcontroller's control is abnormal, and the second microcontroller forces a low level output to the control module, turning off the photoelectric power output. If a high level is detected within 6.5ms... S4. When the photoelectric sensor signal falls, the first microcontroller is determined to be operating normally. S5. When the second microcontroller detects the rising edge of the photoelectric sensor signal, it increments the xenon lamp emission count by 1 and stores the current emission count to measure the xenon lamp quality. S6. The microcontroller collects the xenon lamp current in real time. When the detected current exceeds the preset maximum output current, the second microcontroller forces a low-level output to the control module to shut down the photoelectric power supply output. At the same time, it sends an overcurrent alarm message to the first microcontroller via the serial port to trigger the overcurrent alarm reminder. S7. An emergency stop switch is connected in series on the device's input AC line. When the emergency stop switch is triggered, the device power supply is directly cut off.

[0006] A further technical solution of the present invention is: in step S2, the first temperature is preset to 39°C, the second temperature threshold is 42°C, and the safe temperature is 38°C; the temperature module uses a temperature sensor with a temperature error range of ±0.1°C to ±0.5°C to ensure the accuracy of the temperature rise rate calculation.

[0007] A further technical solution of the present invention is: in step S4, when the number of light outputs reaches a preset lifetime threshold, the width and / or number of sub-pulses of subsequent pulse outputs are automatically adjusted to compensate for the light energy attenuation of the xenon lamp; the compensation amount is expressed by the formula... Calculate, where, To compensate for the energy setting, To set the initial energy, For compensation coefficient, This represents the current number of light emission events. This refers to the maximum number of light outputs rated for the xenon lamp.

[0008] A further technical solution of the present invention is: the control module is a hardware logic circuit that implements AND gate function and uses a 74LS08 chip; the first microcontroller and the second microcontroller communicate with each other through the UART serial communication protocol to ensure timing synchronization.

[0009] A further technical solution of the present invention is: the photoelectric sensor is a 2CU301 type silicon photodiode with a spectral response range of 350-1100nm, a response frequency of not less than 1MHz, a maximum pulse frequency of 20Hz in the light pulse frequency output mode, and a minimum sub-pulse width of 1ms in the pulse train mode.

[0010] A further technical solution of the present invention is: when the intense pulsed light therapy device is working, the cooling module is turned on in advance to avoid the temperature of the treatment area from being too high; when the energy fluctuation of a single xenon lamp emission exceeds ±10% or the number of emission times reaches the preset maximum number, a xenon lamp replacement reminder is triggered.

[0011] A further technical solution of the present invention is that the output monitoring and adjustment method is applicable to intense pulsed light therapy for temperature-sensitive areas such as the neck, inner arm, and forehead.

[0012] Another objective of this invention is to provide an output monitoring and adjustment system for an intense pulsed light (IPL) therapy device. The system includes a dual-control unit composed of a first microcontroller and a second microcontroller. The first and second microcontrollers are synchronized via UART communication, and both output logic level signals. A control module employs a hardware logic circuit with an AND gate function. Its input terminals are connected to the signal output terminals of the first and second microcontrollers, respectively, and its output terminal is connected to a photon power supply. This module performs a logical AND operation on the two logic level signals to control the on / off state of the photon power supply. During normal operation, the second microcontroller outputs a high level, and the output level of the control module is synchronized with the input of the first and second microcontrollers. The first microcontroller outputs a consistent level. A temperature control unit includes a temperature module and a cooling module. The temperature module detects the temperature of the treatment site at 1000µs intervals, and the cooling module operates according to a set cooling temperature. The greater the temperature deviation from the set value, the greater the output power. When the detected temperature exceeds 10°C, it outputs full power at 14V and 15A. The second microcontroller, based on the temperature detected by the temperature module and the calculated temperature rise rate Ktemp=(temp2-temp1) / 1000µs, inserts a low-level signal into the control module when the temperature Ts1>39°C at time Ts and the predicted sub-pulse end temperature exceeds 42°C. The insertion time is T... 插1 =(Ts1-38) / K1*1000us, where the first microcontroller records T. 插1 The system includes a high-level output for a corresponding duration after the last sub-pulse interval; a runaway protection unit, where the photoelectric sensor converts the light signal into an electrical signal, and the second microcontroller starts timing when it detects the rising edge of the signal. If a high level is detected continuously for 6.5ms, the first microcontroller is deemed abnormal and forced to output a low level to the control module; a xenon lamp management unit, where the second microcontroller counts and stores the number of xenon lamp light emissions by detecting the rising edge of the photoelectric sensor signal; an overcurrent protection unit, including a current acquisition module consisting of a Hall current sensor and an operational amplifier circuit mounted on the xenon lamp power supply line, where the current acquisition module converts the current signal into a voltage signal compatible with the microcontroller's AD port, and when the microcontroller detects a current exceeding 550A, the second microcontroller forces a low level output to the control module and sends an alarm signal to the first microcontroller via a serial port; and a physical emergency stop unit, used to directly cut off the equipment power supply.

[0013] A further technical solution of the present invention is as follows: the output monitoring and adjustment system further includes an alarm module, which triggers a xenon lamp replacement reminder when the single emission energy fluctuation of the xenon lamp exceeds ±10% or the number of emission times reaches a preset maximum value; the temperature module uses a temperature sensor with a temperature error range of ±0.1℃ to ±0.5℃; and the cooling module is started in advance before treatment.

[0014] A further technical solution of the present invention is that the output monitoring and adjustment system is adapted to treatment scenarios of temperature-sensitive parts of the human body, such as the neck, inner arm, and forehead.

[0015] The beneficial effects of this invention are as follows: By monitoring the temperature and temperature rise rate in real time, the pulse train output timing is dynamically adjusted to avoid excessively high temperatures at the treatment site, while ensuring consistent pulse train energy output and uninterrupted treatment, effectively improving the treatment effect. This meets the requirements for equipment surface temperature in GB 9706.1-2007 "Medical Electrical Equipment Part 1: General Requirements for Safety," keeping the treatment site temperature within a safe range. The dual single-chip microcomputer control architecture combined with UART communication ensures synchronized control signal timing, preventing malfunctions. The photoelectric sensor monitors the light output in real time, effectively preventing continuous light energy output caused by the first single-chip microcomputer program malfunction. Overcurrent protection and a physical emergency stop mechanism work together to further enhance the safety of the equipment under extreme conditions, ensuring the safety of patients and operators. The invention accurately records the number of xenon lamp light outputs, establishes clear xenon lamp quality judgment standards, and promptly reminds users to replace aging xenon lamps, preventing insufficient xenon lamp energy from affecting the treatment effect, while also providing data support for xenon lamp maintenance. Attached Figure Description

[0016] Figure 1 is a schematic block diagram of the output monitoring and adjustment system of the intense pulsed light therapy device provided in an embodiment of the present invention.

[0017] Figure 2 is a schematic diagram of the control waveform from the first microcontroller to the control module provided in an embodiment of the present invention.

[0018] Figure 3 is a schematic diagram of real-time temperature detection of the treatment site provided in an embodiment of the present invention. Figure 4 is a schematic diagram of the execution of T provided in an embodiment of the present invention. 插1 High-level output for a specific time period. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] The output monitoring and adjustment method of the intense pulsed light therapy device provided by this invention is detailed as follows: The control section of the intense pulsed light therapy device is built according to a dual-microcontroller control architecture. Appropriate microcontrollers are selected as the first and second microcontrollers. A 74LS08 chip is used to construct the control module, implementing an AND gate function. A temperature sensor with a temperature error range of ±0.2℃ is selected for the temperature module. A 2CU301 silicon photodiode is used as the photoelectric sensor. A Hall current sensor is installed on the xenon lamp power supply line, and an operational amplifier circuit is used for the current acquisition module. An emergency stop switch is connected in series on the device's 220V AC input line. Pulse parameters are set via a touchscreen, and a foot switch is used as the trigger signal. All components are connected and debugged to ensure normal communication and stable function of each module.

[0022] Step S1: Construct a dual-microcontroller control architecture. The first and second microcontrollers output logic levels to the control module. The control module performs a logical AND operation on the two logic level signals and outputs the result to the photonic power supply. A high level enables the photonic power supply output, and a low level disables it. Under normal circumstances, the signal output from the second microcontroller to the control module is high, and the logic level output from the first microcontroller is consistent with the output level of the control module. The first and second microcontrollers achieve timing synchronization through a UART communication mechanism. The control module is a hardware logic circuit that implements AND gate functionality and uses a 74LS08 chip. The first and second microcontrollers communicate via a UART serial communication protocol to ensure timing synchronization.

[0023] Step S2: According to the user-set cooling temperature, the cooling module works and maintains the set temperature. When the temperature deviates from the set cooling temperature, the greater the deviation, the greater the output power of the cooling module. When the detected temperature is greater than 10℃, the cooling module outputs full power, with an output voltage of approximately 14V and a current of 15A. During the treatment, the temperature module detects the temperature of the treatment site in real time with a detection cycle of 1000us, and calculates the temperature rise rate Ktemp = (temp2-temp1) / 1000us between two consecutive temperature detections. At time Ts, if the acquired temperature Ts1 < 39℃, pulse control is performed according to the preset value. If Ts1 > 39℃ and it is determined that the temperature T ends when the current sub-pulse ends, and the temperature = (T ends - Ts) * K1 + Ts1 > 42℃, then at time Ts, the signal output from the second microcontroller to the control module is inserted at a low level for a period of time T. 插1 =(Ts1-38) / K1*1000us, waiting for Ts+T 插1 At time T, the second microcontroller resumes outputting a high-level pulse; the first microcontroller monitors the feedback signal in real time. If the first microcontroller outputs a high level while the feedback signal is low, it records T. 插1 After the last sub-pulse interval completes its output, execute T. 插1 The high-level output during the time period; in step S2, the first temperature is preset to 39℃, the second temperature threshold is 42℃, and the safe temperature is 38℃; the temperature module uses a temperature sensor with a temperature error range of ±0.1℃~±0.5℃ to ensure the accuracy of the temperature rise rate calculation.

[0024] Step S3: The photoelectric signal is converted into an electrical signal by the photoelectric sensor. When the second microcontroller detects the rising edge of the photoelectric sensor signal, it starts timing. If a high level is detected for 6.5ms, the first microcontroller is deemed to be malfunctioning, and the second microcontroller forces a low level output to the control module, turning off the photoelectric power output. If a falling edge of the photoelectric sensor signal is detected within 6.5ms, the first microcontroller is deemed to be functioning normally. Step S4: When the second microcontroller detects the rising edge of the photoelectric sensor signal, it increments the xenon lamp emission count by 1 and stores the current emission count to measure the xenon lamp quality. When the emission count reaches a preset lifespan threshold, it automatically adjusts the sub-pulse width and / or the number of sub-pulses in subsequent pulse outputs to compensate for the xenon lamp's light energy attenuation. The compensation amount is calculated using the formula... Calculate, where, To compensate for the energy setting, To set the initial energy, For compensation coefficient, This represents the current number of light emission events. This refers to the maximum number of light outputs rated for the xenon lamp.

[0025] Step S5: The optical signal is converted into an electrical signal by the photoelectric sensor. The microcontroller collects the xenon lamp current in real time. When the current exceeds the preset maximum output current, the second microcontroller forces a low level output to the control module to turn off the photonic power supply output. At the same time, an overcurrent alarm message is sent to the first microcontroller via the serial port to trigger the overcurrent alarm reminder. The photoelectric sensor is a 2CU301 silicon photodiode with a spectral response range of 350-1100nm, a response frequency of not less than 1MHz, a maximum pulse frequency of 20Hz in the light pulse frequency output mode, and a minimum sub-pulse width of 1ms in the pulse train mode.

[0026] Step S6: Connect an emergency stop switch in series on the AC input line of the equipment. When the emergency stop switch is triggered, the power supply to the equipment will be cut off directly.

[0027] The control section of the intense pulsed light therapy device was built according to a dual-microcontroller control architecture. Appropriate microcontrollers were selected as the first and second microcontrollers, and a 74LS08 chip was used to construct the control module, implementing AND gate functionality. A temperature sensor with a temperature error range of ±0.2℃ was selected for the temperature module. A 2CU301 silicon photodiode was used as the photoelectric sensor. A Hall current sensor was installed on the xenon lamp power supply line, and an operational amplifier circuit was used for the current acquisition module. An emergency stop switch was connected in series on the device's 220V AC input line. Pulse parameters were set via a touchscreen, and a foot switch was used as the trigger signal. All components were connected and debugged to ensure normal communication and stable function of each module.

[0028] The operator sets the cooling temperature to 3℃, pulse width t1=3ms, sub-pulse interval T2=5ms, and pulse train period T via the touchscreen, based on the treatment site (e.g., neck) and the patient's condition. # =20ms and other parameters are set to activate the cooling module in advance. Once the cooling module stabilizes the temperature near the set value, the treatment can begin.

[0029] After treatment begins, the temperature module collects the temperature of the neck treatment area in real time with a detection cycle of 1000µs. Assuming that at time Ts, the collected temperature Ts1 = 40℃, and the previous temperature temp1 = 39.8℃, then the temperature rise rate Ktemp = (40 - 39.8 / 1000µs = 0.2℃ / 1000µs). The predicted temperature at the end of the current sub-pulse, T_end_temperature, is calculated as (T_end - Ts) * 0.2℃ / 1000µs + Ts1. If the calculated T_end_temperature = 43℃ > 42℃, then the signal output from the second microcontroller to the control module is inserted at a low level, with an insertion time T_insertion. 插1=(40-38 / (0.2℃ / 1000us)*1000us=10000us=10ms. At time (Ts+10ms), the second microcontroller resumes outputting a high-level pulse. When the first microcontroller detects that its own output is high while the feedback signal is low, it records T... 插1 =10ms, after the last sub-pulse interval is completed, a high-level output is executed for a period of 10ms to ensure that the pulse train energy is consistent.

[0030] During treatment, the photoelectric sensor converts the light signal output by the xenon lamp into an electrical signal in real time. If the first microcontroller program malfunctions and continuously outputs a high level, the photoelectric sensor will also continuously output a high level. The second microcontroller will start timing after detecting the rising edge of the photoelectric sensor signal. If no falling edge is detected after 6.5ms, the first microcontroller is deemed to be malfunctioning. The second microcontroller will then force a low level output to the control module, causing the control module to output a low level and shutting down the photonic power supply output to prevent continuous light energy output.

[0031] A Hall effect current sensor monitors the xenon lamp current in real time. The current acquisition module converts the current signal into a voltage signal and transmits it to the microcontroller. If the xenon lamp current rises to 560A due to an abnormal situation, the microcontroller detects that this current value exceeds the 550A threshold. The second microcontroller then forcibly pulls the signal output to the control module low, shutting down the photonic power supply output. Simultaneously, it sends an overcurrent alarm message to the first microcontroller via serial port. The first microcontroller controls the touchscreen to display the overcurrent alarm information, reminding the operator to handle the situation promptly.

[0032] In case of an emergency during treatment, the operator can press the emergency stop switch. The emergency stop switch cuts off the 220V AC power supply to the equipment, and the equipment will stop working immediately to ensure patient safety.

[0033] During treatment, the second microcontroller increments the xenon lamp emission count by 1 and stores it each time it detects a rising edge of the photoelectric sensor signal. After treatment, the operator can view the xenon lamp emission count via the touchscreen. If a single emission energy fluctuation exceeds ±10%, or if the xenon lamp emission count reaches the preset maximum, such as 10,000 times, the device will trigger a xenon lamp replacement reminder, prompting the operator to replace the xenon lamp promptly to ensure the effectiveness of subsequent treatments.

[0034] Another objective of this invention is to provide an output monitoring and adjustment system for an intense pulsed light (IPL) therapy device. The output monitoring and adjustment system includes a dual-control unit, consisting of a first microcontroller and a second microcontroller. The first and second microcontrollers are synchronized via UART communication, and both output logic level signals. A control module employs a hardware logic circuit with an AND gate function. Its input terminals are connected to the signal output terminals of the first and second microcontrollers, respectively, and its output terminal is connected to a photon power supply. This module performs a logical AND operation on the two logic level signals to control the on / off state of the photon power supply. During normal operation, the second microcontroller outputs a high level, and the output level of the control module is synchronized with the first microcontroller's output. The microcontroller outputs a consistent level. The temperature control unit includes a temperature module and a cooling module. The temperature module detects the temperature of the treatment site at 1000µs intervals. The cooling module operates according to a set cooling temperature; the greater the temperature deviation from the set value, the greater the output power. When the detected temperature exceeds 10℃, it outputs full power at 14V and 15A. The second microcontroller, based on the temperature detected by the temperature module and the calculated temperature rise rate Ktemp=(temp2-temp1) / 1000µs, inserts a low-level signal into the control module when the temperature Ts1>39℃ at time Ts and the predicted sub-pulse end temperature exceeds 42℃. The insertion time is T. 插1 =(Ts1-38) / K1*1000us, where the first microcontroller records T. 插1 The system includes a high-level output for a corresponding duration after the last sub-pulse interval; a runaway protection unit, where the photoelectric sensor converts the light signal into an electrical signal, and the second microcontroller starts timing when it detects the rising edge of the signal. If a high level is detected continuously for 6.5ms, the first microcontroller is deemed abnormal and forced to output a low level to the control module; a xenon lamp management unit, where the second microcontroller counts and stores the number of xenon lamp light emissions by detecting the rising edge of the photoelectric sensor signal; an overcurrent protection unit, including a current acquisition module consisting of a Hall current sensor and an operational amplifier circuit mounted on the xenon lamp power supply line, where the current acquisition module converts the current signal into a voltage signal compatible with the microcontroller's AD port, and when the microcontroller detects a current exceeding 550A, the second microcontroller forces a low level output to the control module and sends an alarm signal to the first microcontroller via a serial port; and a physical emergency stop unit, used to directly cut off the equipment power supply.

[0035] The output monitoring and adjustment system also includes an alarm module. When the energy fluctuation of a single xenon lamp emission exceeds ±10% or the number of emission cycles reaches a preset maximum value, the alarm module triggers a xenon lamp replacement reminder. The temperature module uses a temperature sensor with a temperature error range of ±0.1℃ to ±0.5℃. The cooling module is activated in advance before treatment.

[0036] The output monitoring and adjustment system is adapted to treatment scenarios involving temperature-sensitive areas of the human body, such as the neck, inner arm, and forehead.

[0037] As shown in Figure 1, this invention provides a measure to adjust the pulse train output timing when a safety risk is detected in the temperature of the treatment site, thus avoiding the risk. Simultaneously, the pulse train energy output is consistent, avoiding the risk of treatment interruption and ensuring the treatment effect. It also provides a risk prevention measure to prevent microcontroller program malfunction, which could lead to continuous light energy output. Furthermore, it provides a scheme to record the number of xenon lamp light emission times at the handle end for judging xenon lamp quality. The first and second microcontrollers output logic levels to the control module, which performs an AND gate operation. The control module performs a logical AND operation on the two signals and then outputs the result to the photon power supply. A high (low) level enables (disables) the photon power supply output.

[0038] Under normal circumstances, the second microcontroller outputs a high level to the control module, and the logic level output by the first microcontroller is consistent with the output level of the control module.

[0039] The control waveform from the first microcontroller to the control module is shown in Figure 2.

[0040] The cooling module operates and maintains the set temperature of 5℃ (generally ranging from -5 to 5℃) according to the user's setting. When the temperature deviates from the set cooling temperature, the greater the deviation, the greater the power output of the cooling module, thus increasing the cooling effect. When the detected temperature is greater than 10℃, the cooling module outputs full power, with an output voltage of approximately 14V and a current of 15A. During treatment, the temperature module detects the temperature of the treatment site in real time with a detection cycle of 1000us. The temperatures detected before and after are temp1 and temp2, and the temperature rise rate is Ktemp = (temp2 - temp1) / 1000us, as shown in Figure 3.

[0041] Assuming the temperature rise rate is K1 at time Ts, and the collected temperature is Ts1, if Ts1 < 39℃, pulse control is performed according to the preset value; when Ts1 is greater than 39℃ (maximum power output of the cooling module), the temperature at the end of the current sub-pulse is determined, and T_end temperature = (T_end - Ts) * K1 + Ts1; if T_end temperature > 42℃, an over-temperature risk is identified; at the current time Ts, the control signal from the second microcontroller to the control module is inserted with a low level for a period of time, causing the control module to output a low level for the same duration, preventing the temperature from continuing to rise. Assuming the preset safe temperature is 38℃, the low-level insertion time is T_end temperature. 插1 =(Ts1-38) / K1*1000us; wait for (Ts+T 插1At time T, the second microcontroller outputs a high-level pulse to the control module; the first microcontroller monitors the feedback signal in real time. If the first microcontroller outputs a high level and the feedback signal is low, it indicates that the second microcontroller has inserted a low-level signal; the first microcontroller records the current time T. 插1 After the last sub-pulse interval completes its output, execute T. 插1 High-level output for a specific time period; as shown in Figure 4.

[0042] Through the above control, the risk of excessive temperature was avoided, and the energy remained consistent during pulse train output, achieving the expected therapeutic effect.

[0043] If the first microcontroller program malfunctions, causing continuous output of light energy, there is a safety hazard. A safety mechanism is provided to avoid the above problem. The photoelectric sensor converts the light signal into an electrical signal, which can be used by the second microcontroller to monitor the light output time (the maximum sub-pulse width of the intense pulsed light therapy instrument is 6ms). When the second microcontroller detects a rising edge from the photoelectric sensor, it starts a timer. If a high level is detected for 6.5ms consecutively, it considers the first microcontroller's control to be malfunctioning. The second microcontroller then forces a low level output to the control module, causing the control module's output to go low and immediately shutting down the photonic power supply. If the second microcontroller detects a falling edge from the photoelectric sensor within 6.5ms, it considers the first microcontroller's control to be normal.

[0044] When the second microcontroller detects a rising edge from the photoelectric sensor, it increments the light emission count by 1 and records the current emitted beam in the second microcontroller to measure the quality of the xenon lamp.

[0045] The above measures can greatly reduce the safety risk of excessively high temperature at the treatment site during treatment; and ensure that there will be no continuous output of light energy in the event of a malfunction in the host program, thus increasing the safety of the equipment.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for monitoring and adjusting the output of an intense pulsed light therapy device, characterized in that, The output monitoring and adjustment method of the intense pulsed light therapy device includes the following steps: S1. Construct a dual microcontroller control architecture, so that the output logic levels of the first and second microcontrollers control the control module. The control module performs a logical AND operation on the two logic level signals and outputs them to the photon power supply. A high level enables the photon power supply output, and a low level disables the photon power supply output. Under normal circumstances, the signal output from the second microcontroller to the control module is high level, and the logic level output by the first microcontroller is consistent with the output level of the control module. The first and second microcontrollers achieve timing synchronization through a UART communication mechanism; S2. According to the cooling temperature set by the user, the cooling module works and maintains the set temperature. When the temperature deviates from the set cooling temperature, the greater the deviation, the greater the output power of the cooling module. When the detected temperature is greater than 10℃, the cooling module outputs full power, with an output voltage of approximately 14V and a current of 15A; During the treatment, the temperature module detects the temperature of the treatment site in real time with a detection cycle of 1000us, and calculates the temperature rise rate Ktemp = (temp2 - ... temp1) / 1000us; At time Ts, if the acquired temperature Ts1 < 39℃, pulse control is performed according to the preset value; if Ts1 > 39℃ and it is determined that the temperature T ends when the current sub-pulse ends, temperature = (T ends - Ts) * K1 + Ts1 > 42℃, then at time Ts, the signal output by the second microcontroller to the control module is inserted at a low level, and the low level insertion time is T. 插1 =(Ts1-38) / K1*1000us, waiting for Ts+T 插1 At time T, the second microcontroller resumes outputting a high-level pulse; the first microcontroller monitors the feedback signal in real time. If the first microcontroller outputs a high level while the feedback signal is low, it records T. 插1 After the last sub-pulse interval completes its output, execute T. 插1 S3. The photoelectric signal is converted into an electrical signal by the photoelectric sensor. When the second microcontroller detects the rising edge of the photoelectric sensor signal, it starts timing. If a high level is detected for 6.5ms, the first microcontroller is deemed to be malfunctioning. The second microcontroller forces a low level to the control module to turn off the photoelectric power output. If a falling edge of the photoelectric sensor signal is detected within 6.5ms, the first microcontroller is deemed to be functioning normally. S4. When the second microcontroller detects the rising edge of the photoelectric sensor signal, it increments the xenon lamp emission count by 1 and stores the current emission count to measure the xenon lamp quality. S5. The microcontroller collects the xenon lamp current in real time. When the current exceeds the preset maximum output current, the second microcontroller forces a low level to the control module to turn off the photoelectric power output. At the same time, it sends an overcurrent alarm message to the first microcontroller via the serial port to trigger the overcurrent alarm. S6. An emergency stop switch is connected in series on the device's input AC line. When the emergency stop switch is triggered, the device power is directly cut off.

2. The output monitoring and adjustment method of the intense pulsed light therapy device according to claim 1, characterized in that, In step S2, the first temperature is preset to 39℃, the second temperature threshold is 42℃, and the safe temperature is 38℃; the temperature module uses a temperature sensor with a temperature error range of ±0.1℃~±0.5℃ to ensure the accuracy of the temperature rise rate calculation.

3. The output monitoring and adjustment method of the intense pulsed light therapy device according to claim 2, characterized in that, In step S4, when the number of light outputs reaches a preset lifespan threshold, the width and / or number of sub-pulses of the subsequent pulse output are automatically adjusted to compensate for the light energy decay of the xenon lamp. The compensation amount is expressed by the formula Calculate, where, To compensate for the energy setting, To set the initial energy, For compensation coefficient, This represents the current number of light emission events. This refers to the maximum number of light outputs rated for the xenon lamp.

4. The output monitoring and adjustment method of the intense pulsed light therapy device according to claim 3, characterized in that, The control module is a hardware logic circuit that implements AND gate functions and uses a 74LS08 chip; the first microcontroller and the second microcontroller communicate with each other through the UART serial communication protocol to ensure timing synchronization.

5. The output monitoring and adjustment method of the intense pulsed light therapy device according to claim 4, characterized in that, The photoelectric sensor is a 2CU301 silicon photodiode with a spectral response range of 350-1100nm, a response frequency of not less than 1MHz, a maximum pulse frequency of 20Hz in the light pulse frequency output mode, and a minimum sub-pulse width of 1ms in the pulse train mode.

6. The output monitoring and adjustment method of the intense pulsed light therapy device according to claim 5, characterized in that, When the intense pulsed light therapy device is working, turn on the cooling module in advance to avoid the treatment area from getting too hot; when the energy fluctuation of a single xenon lamp emission exceeds ±10% or the number of emission times reaches the preset maximum, trigger the xenon lamp replacement reminder.

7. The output monitoring and adjustment method of the intense pulsed light therapy device according to claim 6, characterized in that, This output monitoring and adjustment method is suitable for intense pulsed light therapy on temperature-sensitive areas such as the neck, inner arm, and forehead.

8. An output monitoring and adjustment system for a high-intensity pulsed light therapy device, characterized in that, The output monitoring and adjustment system includes a dual control unit, consisting of a first microcontroller and a second microcontroller. The first and second microcontrollers are synchronized via UART communication, and both output logic level signals. The control module uses a hardware logic circuit with AND gate functionality. Its input terminals are connected to the signal output terminals of the first and second microcontrollers, respectively, and its output terminal is connected to a photonic power supply. It is used to control the on / off state of the photonic power supply after performing a logical AND operation on the two logic level signals. During normal operation, the second microcontroller outputs a high level, and the output level of the control module is consistent with the output level of the first microcontroller. The temperature control unit includes a temperature module and a cooling module. The temperature module detects the temperature of the treatment site at 1000µs intervals. The cooling module operates according to a set cooling temperature; the greater the temperature deviation from the set value, the greater the output power. When the detected temperature exceeds 10°C, it outputs full power at 14V and 15A. The second microcontroller, based on the temperature detected by the temperature module and the calculated temperature rise rate Ktemp=(temp2-temp1) / 1000µs, inserts a low-level signal into the control module when the temperature Ts1>39°C at time Ts and the predicted sub-pulse end temperature exceeds 42°C. The insertion time is T. 插1 = (Ts1-38) / K1*1000us, where the first microcontroller records T. 插1 The system includes a high-level output for a corresponding duration after the last sub-pulse interval; a runaway protection unit, where the photoelectric sensor converts the light signal into an electrical signal, and the second microcontroller starts timing when it detects the rising edge of the signal. If a high level is detected continuously for 6.5ms, the first microcontroller is deemed abnormal and forced to output a low level to the control module; a xenon lamp management unit, where the second microcontroller counts and stores the number of xenon lamp light emissions by detecting the rising edge of the photoelectric sensor signal; an overcurrent protection unit, including a current acquisition module consisting of a Hall current sensor and an operational amplifier circuit mounted on the xenon lamp power supply line, where the current acquisition module converts the current signal into a voltage signal compatible with the microcontroller's AD port, and when the microcontroller detects a current exceeding 550A, the second microcontroller forces a low level output to the control module and sends an alarm signal to the first microcontroller via a serial port; and a physical emergency stop unit, used to directly cut off the equipment power supply.

9. The output monitoring and adjustment system according to claim 8, characterized in that, The output monitoring and adjustment system also includes an alarm module. When the energy fluctuation of a single xenon lamp emission exceeds ±10% or the number of emission cycles reaches a preset maximum value, the alarm module triggers a xenon lamp replacement reminder. The temperature module uses a temperature sensor with a temperature error range of ±0.1℃ to ±0.5℃. The cooling module is activated in advance before treatment.

10. The output monitoring and adjustment system of the intense pulsed light therapy device according to claim 9, characterized in that, The output monitoring and adjustment system is adapted to treatment scenarios involving temperature-sensitive areas of the human body, such as the neck, inner arm, and forehead.

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