Output control method of laser therapy equipment and laser therapy equipment

Abstract

This application discloses an output control method and a laser therapy device. The laser therapy device includes a laser for outputting laser light and a laser power supply control unit for supplying power to the laser. The maximum output power of the laser is greater than 100mW, and the wavelength of the laser output is 622nm-1000nm. The method includes: outputting a control signal to the laser power supply control unit to control the laser to output laser light to irradiate the user's skin; acquiring a first temperature of the user's skin at the irradiation site, and adjusting the control signal according to the first temperature to control the output power of the laser. This can achieve the therapeutic effect of phototherapy and moxibustion, thereby improving the user's experience.

Description

Technical Field

[0001] This application relates to the field of massage technology, and more specifically, to an output control method and a laser therapy device. Background Technology

[0002] For office workers, long hours working in front of a computer can cause neck and back pain. Physiotherapy devices can effectively relieve neck and back pain, and therefore, they are becoming increasingly popular.

[0003] Existing physiotherapy devices typically include electrode physiotherapy devices and laser physiotherapy devices. Taking laser physiotherapy devices as an example, existing ones are usually used for laser irradiation, which cannot achieve good physiotherapy effects, resulting in a poor user experience. Summary of the Invention

[0004] In view of the above problems, this application proposes an output control method and a laser therapy device, which can control the duration of voltage supply to the laser according to the temperature of the user's skin surface to achieve the purpose of heat therapy, thereby improving the user's experience.

[0005] In a first aspect, embodiments of this application provide an output control method for a laser therapy device. The laser therapy device includes a laser for outputting laser light and a laser power supply control unit for supplying power to the laser. The maximum output power of the laser is greater than 100mW, and the wavelength of the laser light output by the laser is 622nm-1000nm. The method includes: outputting a control signal to the laser power supply control unit to control the laser to output laser light to irradiate the user's skin; acquiring a first temperature of the user's skin at the irradiation site of the laser, and adjusting the control signal according to the first temperature to control the output power of the laser.

[0006] Secondly, embodiments of this application provide a laser therapy device, including: a laser, a power supply unit, a laser power supply control unit, and a controller. The power supply unit is used to provide voltage. A first terminal of the laser power supply control unit is connected to the power supply unit, and a second terminal is used to connect to the laser. The controller is connected to the power supply unit and the third terminal of the laser power supply control unit, respectively. The controller is used to output a control signal to the laser power supply control unit to control the laser to output laser light to irradiate the user's skin, and to obtain a first temperature of the user's skin at the laser irradiation site, and to adjust the control signal according to the first temperature to control the output power of the laser.

[0007] The laser therapy device output control method and laser therapy device provided in this application embodiment have a certain thermal effect when the laser is irradiated on the user's skin due to the large power of the laser and the laser band being in the red light or near-infrared band. This results in a comprehensive therapeutic effect of phototherapy, heating, and moxibustion on the human body, thereby improving the user's experience. In addition, the output power of the laser per unit time can be adjusted according to the temperature of the skin surface, which can prevent the laser emitted by the laser from overheating and causing skin damage when irradiating the human body, thus improving the safety of the laser therapy device.

[0008] These or other aspects of this application will become more apparent in the following description of the embodiments. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 An application block diagram of a laser power supply control circuit is shown.

[0011] Figure 2 A circuit schematic diagram of a power supply unit is shown.

[0012] Figure 3 A circuit diagram of a charging management circuit is shown.

[0013] Figure 4 The waveform of a pulse width modulation signal is shown.

[0014] Figure 5 A circuit diagram of a laser power supply control circuit is shown.

[0015] Figure 6 Another application block diagram of a laser power supply control circuit is shown.

[0016] Figure 7 A schematic diagram of a heat dissipation component is shown.

[0017] Figure 8 A circuit diagram of a second temperature acquisition unit is shown.

[0018] Figure 9 A schematic diagram of a laser therapy device is shown.

[0019] Figure 10 A schematic diagram of a neck laser therapy device is shown.

[0020] Figure 11 A flowchart illustrating an output control method for a laser therapy device is shown. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0022] For people who work at a desk for long periods, maintaining the same posture or repeating the same movements for extended periods can cause muscle soreness in areas such as the shoulders, neck, and lower back due to prolonged contraction. Physiotherapy devices can effectively alleviate this muscle soreness; currently, these devices include laser physiotherapy.

[0023] The inventors discovered that existing laser therapy devices only emit laser light to provide cold light irradiation therapy to users. When the laser therapy device only emits laser light to irradiate the area requiring treatment, the user does not experience any noticeable sensation, and the therapeutic effect is poor.

[0024] Therefore, to improve the above-mentioned problems, the inventors have proposed an output control method and a laser therapy device according to the embodiments of this application. The laser therapy device includes a laser for outputting laser light and a laser power supply control unit for supplying power to the laser. The maximum output power of the laser is greater than 100mW, and the wavelength of the laser output is 622nm-1000nm. By outputting a control signal to the laser power supply control unit, the laser outputs laser light to irradiate the user's skin. A first temperature of the user's skin at the laser irradiation site is obtained, and the control signal is adjusted according to the first temperature to control the output power of the laser. Because the laser has a large power and the laser wavelength is in the red or near-infrared band, there is a certain thermal effect when the laser irradiates the user's skin, thereby achieving a comprehensive therapeutic effect of phototherapy, heating, and moxibustion, thus improving the user's experience. In addition, the output power of the laser per unit time can be adjusted according to the temperature of the skin surface, which can prevent overheating and skin damage when the laser emitted by the laser irradiates the human body, thus improving the safety of the laser therapy device.

[0025] The output control method and the laser therapy device provided in this application will be described in detail below through specific embodiments.

[0026] Please see Figure 1This application provides a laser therapy device, which includes a laser power supply control circuit 100 and a laser 200. The laser power supply control circuit 100 includes a power supply unit 110, a laser power supply control unit 120, and a controller 130.

[0027] The laser 200 is used to output laser light, and the maximum output power of the laser 200 is greater than 100mw. The laser wavelength output by the laser 200 is 622nm-1000nm, which is the band of red light and near-infrared light, and has a good therapeutic effect.

[0028] The power supply unit 110 provides voltage. A first terminal of the laser power supply control unit 120 is connected to the power supply unit 110, and a second terminal is connected to the laser 200. A controller 130 is connected to both the power supply unit 110 and the third terminal of the laser power supply control unit 120. The controller 130 outputs a control signal to the laser power supply control unit 110 to control the laser 200 to output laser light to irradiate the user's skin. It also acquires a first temperature of the user's skin at the irradiation site of the laser 200 and adjusts the control signal based on the first temperature to control the output power of the laser 200.

[0029] The power supply unit 110 may include only a power supply, or only a power supply circuit connected to the power supply of the peripheral device, or it may include both a power supply and a power supply circuit, as long as it can provide voltage.

[0030] When the power supply unit 110 includes a power source, the power source can be a power source with a variable output voltage or a power source for outputting a fixed voltage value. The fixed voltage value output by the power supply unit 110 can be a single fixed voltage value or multiple fixed voltage values ​​with different values. The specific configuration can be determined according to actual needs and is not limited here.

[0031] In one embodiment, if the power supply unit 110 includes a power supply with a fixed output voltage value, the output voltage value may be one or more of the following fixed voltage values: 3V, 3.3V, 5V, 12V or 24V, which are not specifically limited here.

[0032] The power source mentioned above can specifically be a rechargeable battery. It should be understood that when the power source includes a rechargeable battery, the power supply unit 110 may also include a power supply circuit and a charging management circuit. The input terminal of the power supply circuit is used to connect to an external power source, and the output terminal is connected to the input terminal of the charging management circuit. The output terminal of the charging management circuit is connected to the input terminal of the rechargeable battery, and the output terminal of the rechargeable battery is connected to the first terminal of the controller 130 and the laser power supply control unit 120, respectively.

[0033] Please refer to the following: Figure 2 and Figure 3 As shown, Figure 2 The diagram shown is the circuit schematic of the power supply circuit. Figure 2 The diagram shown is the circuit schematic of the charging management circuit. Among them, Figure 2 201 in the text refers to the charging port. Figure 2 The charging interface 201 shown is a TYPE-C interface, used for connecting to an external power supply device. Figure 2 The Vusb interface is the output terminal of the power supply circuit, used to connect to... Figure 3 Connect to the Vusb interface (input terminal of the charging management circuit) in the middle. Figure 3 The 301 in the code refers to the charging management chip, which could be model TC4056A. Figure 3 The Vbat-in interface is the output terminal of the charging management circuit, which is used to connect to the rechargeable battery. It should be understood that the output terminal of the charging management circuit can also be directly connected to the first terminal of the controller 130 and the laser power supply control unit 120 respectively.

[0034] It should be understood that Figure 2 and Figure 3 This is for illustrative purposes only; the charging management circuit and power supply circuit may include more or fewer components. It should also be understood that different charging interfaces may be used. Figure 2 The power supply circuit shown will change; with different charging management chips, Figure 3 The peripheral circuits shown will also change accordingly, but will not be specified here.

[0035] The laser power supply control unit 120 may include one or more devices such as resistors, capacitors, and inductors, as long as they can be used to control the voltage (equivalent voltage, the same below) supplied by the power supply unit 110 to the laser 200 according to the pulse width modulation signal.

[0036] The controller 130 may include one or more processing cores. If the laser power supply control circuit 100 described above is applied to a laser therapy device, the controller 130 can connect to various parts of the entire laser therapy device using various interfaces and lines. It can execute various functions and process data of the laser therapy device by running or executing instructions, programs, code sets, or instruction sets stored in its storage space or associated memory, and by calling data stored in its storage space or associated memory. Optionally, the controller 130 can be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA).

[0037] In one implementation, the controller 130 described above can be a microcontroller, as long as it can perform data processing and output control signals.

[0038] The control signal can be a pulse width modulation signal or a control command used to control the output power of the laser.

[0039] In one implementation, the control signal includes a pulse width modulation (PWM) signal. The PWM signals corresponding to different first temperatures have the same high and low level periods (same frequency) but may have different duty cycles. Therefore, when controlling the laser 200 to operate according to the PWM signals corresponding to different first temperatures, the laser 200 can operate for different durations within the same time range.

[0040] For example, if the first temperature is higher than a predetermined first threshold, the duty cycle of the PWM signal is reduced to decrease the output power of the laser; and / or, if the first temperature is lower than the predetermined second threshold, the duty cycle of the PWM signal is increased to increase the output power of the laser.

[0041] The first threshold is greater than the second threshold, and the first threshold can be any one of 55 degrees Celsius, 57 degrees Celsius, or 60 degrees Celsius, etc., while the second temperature threshold can be any one of 36 degrees Celsius, 38 degrees Celsius, or 40 degrees Celsius, etc.

[0042] The frequency of the pulse width modulation signal can be any one of, but not limited to, 45KHz, 50KHz or 55KHz, and the duty cycle of the pulse width modulation signal can be different for different first temperatures. For example, it can be any value between 0 and 99%.

[0043] The initial temperature of the user's skin at the irradiation site of the laser 200 can be obtained by a temperature acquisition device. In other words, the laser therapy device may include a temperature acquisition device, and the laser therapy device may also be associated with a temperature acquisition device.

[0044] It should be understood that the controller 130 can output power to the laser power supply control unit 120 according to the first temperature by adjusting the duty cycle of the pulse width modulation signal according to the first temperature, thereby adjusting the output power of the laser 200. During the adjustment process, the first temperature can be acquired in real time to obtain the duty cycle of the pulse width modulation signal, and the corresponding pulse width modulation signal can be output to the laser power supply control unit 120. Alternatively, the first temperature can be acquired at preset intervals (e.g., 10 seconds, 30 seconds, or one minute) to obtain the duty cycle of the pulse width modulation signal, and the corresponding pulse width modulation signal can be output to the laser power supply control unit 120.

[0045] When a user uses a laser therapy device, because the skin surface temperature is initially low when the laser therapy device irradiates the user's skin, the controller 130 can output as follows: Figure 4 The pulse width modulation signal with a large duty cycle, as shown in Figure a, results in higher power for the laser 200. As the laser 200 is used for longer periods, the surface temperature of human skin gradually increases, and consequently, the temperature of the laser 200 also gradually increases. Therefore, the controller 130 can adjust the pulse width modulation signal output by one or more of the following: usage time, human skin temperature, and laser 200 temperature, so that the controller 130 outputs a signal that... Figure 4 The adjusted pulse width modulation signal shown in Figure b shows that... Figure 4 Compared to diagram a, diagram b shows that within the same high and low level cycle, the duty cycle of the pulse width modulation signal in diagram b is lower than that in diagram a. This means that by adjusting the operating time of the laser 200 within a high and low level signal cycle, its output power is reduced, thereby achieving a comfortable temperature for the human body.

[0046] For example, the maximum output power of the laser can be between 100mw and 1000mw. The actual output power of the laser is less than or equal to its maximum output power, for example, it can be between 0-200mW, between 0-500mW, between 200mW and 500mW, or between 500-1000mW. There are no specific limitations here, and it can be set according to actual needs.

[0047] In one alternative embodiment, the wavelength of the laser emitted by the laser 200 can be any one of 830nm, 808nm, 650nm, and 635nm.

[0048] The laser therapy device may include one or more lasers 200. When there are multiple lasers 200, each laser 200 can be connected to a laser power supply control circuit 100. Each laser 200 can also be connected to a separate laser power supply control circuit 100. The multiple lasers 200 can also be divided into multiple groups, each group of lasers 200 can be connected to a laser power supply control circuit 100. It should be understood that each group of lasers 200 can include at least one laser 200, and the number of lasers included in each group can be different.

[0049] If the laser therapy device includes multiple lasers 200, the wavelengths of the lasers emitted by each laser 200 can be the same or different, depending on the actual needs. No specific limitation is made here.

[0050] In one implementation, there are multiple groups of lasers 200 and multiple laser power supply control circuits 100. Each group of lasers 200 corresponds to one laser power supply control circuit 100, and each group of lasers 200 includes at least one laser. The controller 130 is used to obtain a pulse width modulation signal for controlling the output power of each group of lasers 200 based on the operating parameters corresponding to each group of lasers 200. Each laser power supply control unit 120 is used to control the voltage supplied by the power supply unit 110 to the laser 200 according to the corresponding pulse width modulation signal.

[0051] When each group of lasers 200 includes at least two lasers 200, the at least two lasers 200 can be connected in series with the laser power supply control circuit 100.

[0052] By adopting the above settings, laser moxibustion and temperature control can be applied to multiple parts of the user's body that require heating, thereby creating various different laser moxibustion heating modes for different parts of the user's body.

[0053] In another embodiment, there are multiple lasers 200, and the laser power supply control circuit 100 is used to supply power to the multiple lasers 200.

[0054] In this embodiment, the plurality of lasers 200 are connected in series or in parallel and then connected to the laser power supply control circuit 100.

[0055] In this embodiment, the laser therapy device may be a neck laser therapy device, a waist laser therapy device, a back laser therapy device, an eye laser therapy device, etc.

[0056] By employing the laser therapy device of this application, due to the high power of the laser and the laser wavelength being in the red or near-infrared band, there is a certain thermal effect when the laser irradiates the user's skin, thereby achieving a comprehensive therapeutic effect of phototherapy, heating, and moxibustion on the human body, thus enhancing the user's experience; in addition, the output power of the laser per unit time can be adjusted according to the temperature of the skin surface, which can prevent the laser emitted by the laser from overheating and causing skin damage when irradiating the human body, thus improving the safety of the laser therapy device.

[0057] Please see Figure 5 Another embodiment of this application provides a laser therapy device. The laser power supply control circuit 100 in the laser therapy device includes a power supply unit 110, a laser power supply control unit 120, and a controller 130. The laser power supply control unit 120 includes a power voltage control chip 122 and an inductor L.

[0058] The power supply unit 110 is used to provide voltage. The power supply voltage control chip 122 has its power supply terminal (Vin terminal) connected to the power supply unit 110, its enable terminal (CTRL terminal) connected to the controller 130 for receiving the pulse width modulation signal sent by the controller 130, its output terminal (SW terminal) connected to the power input terminal of the laser 200, and its feedback terminal (FB terminal) connected to the feedback terminal of the laser 200. The inductor L is connected between the input terminal and the output terminal of the power supply voltage control chip 122. The controller 130 is connected to the power supply unit 110 and the third terminal of the laser power supply control unit 120, respectively. The controller 130 is used to output the pulse width modulation signal obtained according to the first temperature to the laser power supply control unit 120. The laser power supply control unit 120 is used to control the voltage provided by the power supply unit 110 to the laser 200 according to the pulse width modulation signal.

[0059] The power supply voltage control chip 122 also includes a ground terminal (GND terminal) for grounding. It should be noted that the power supply voltage control chip 122 is a chip used for voltage and power conversion, featuring low input and high output performance; that is, it can boost a low-voltage signal received at its input terminal and output a high-voltage signal through its output terminal. The output voltage of the power supply voltage control chip 122 can also be determined based on the load connected to its output terminal.

[0060] In this embodiment, the power supply voltage control chip 122 can be a chip with model number SGM3752, SGM3756, or SGM3751. In this embodiment, no specific limitation is made, as long as it is a chip that can perform voltage boosting processing when it receives a low voltage signal at its input terminal and then output a high voltage signal through its output terminal.

[0061] The inductor L is used to boost and store energy for the power supply voltage control chip 122. It should be understood that... Figure 5 The inductor L shown is only illustrative and can be composed of multiple coils connected in series. That is, the number of turns of the coil of the inductor L is not specifically limited here and can be set according to actual needs.

[0062] To ensure a more stable voltage output from the laser power supply control unit 120 to the laser 200 and to prevent the components from burning out due to excessive current, in this embodiment, the laser power supply control unit 120 further includes a diode D and a first current-limiting resistor R1. The anode of the diode D is connected to the output terminal of the power supply voltage control chip 122, and the cathode is connected to the power input terminal of the laser 200. The first end of the first current-limiting resistor R1 is connected between the feedback terminal of the power supply voltage control chip 122 and the feedback terminal of the laser 200, and the second end is grounded.

[0063] By incorporating the diode D, sudden changes in the voltage and current output from the power supply voltage control chip 122 to the laser 200 can be effectively prevented. Simultaneously, since the inductor L can also provide a continuous current to the load through the diode D, further preventing sudden changes in the current and voltage output to the laser 200, the diode D effectively smooths the current.

[0064] By setting the first current-limiting resistor R1, the current received by the feedback terminal of the power supply voltage control chip 122 can be reduced, effectively preventing the feedback terminal of the power supply voltage control chip 122 from being burned out due to excessive current when receiving a large current. Simultaneously, the output power of the laser 200 can be determined, allowing the laser power supply control unit 120 to output a current suitable for the operation of the laser 200.

[0065] The value of the first current-limiting resistor R1 is not specified here; it can be selected based on the model and performance parameters of the power supply voltage control chip 122.

[0066] In order to adjust the current received at the feedback terminal of the power supply voltage control chip 122, in this embodiment, the laser power supply control unit 120 further includes a second current limiting resistor R2. The first end of the second current limiting resistor R2 is connected between the feedback terminal of the power supply voltage control chip 122 and the feedback terminal of the laser 200, and the second end is grounded.

[0067] The resistance value of the second current-limiting resistor R2 can be the same as that of the first current-limiting resistor R1. For example, the resistance values ​​of the first current-limiting resistor R1 and the second current-limiting resistor R2 can be any one of 1 ohm, 2 ohms or 10 ohms.

[0068] It should be understood that the laser power supply control unit 120 may also include more current-limiting resistors, and it should be understood that the first current-limiting resistor R1 may be composed of multiple resistors connected in series or in parallel, and correspondingly, the second current-limiting resistor R2 may also be composed of multiple resistors connected in series or in parallel.

[0069] As one implementation, to further stabilize the voltage signal when the laser power supply control unit 120 supplies power to the laser 200, in this embodiment, the laser power supply control unit 120 further includes a first input filter capacitor C11 and a first output filter capacitor C21. The first end of the first input filter capacitor C11 is connected between the power supply unit 110 and the power supply terminal of the power supply voltage control chip 122, and the second end is grounded. The first end of the first output filter capacitor C21 is connected between the output terminal of the power supply voltage control chip 122 and the power supply terminal of the laser 200, and the second end is grounded.

[0070] The capacitance value of the first input filter capacitor C11 and the capacitance value of the first output filter capacitor C21 can be the same or different, and the capacitance values ​​of the first input filter capacitor C11 and the first output filter capacitor C21 can be set according to actual needs.

[0071] In one implementation, the capacitance value of the first input filter capacitor C11 is any one of 0.1uF, 1uF, 10uF or 22uF, and the capacitance value of the first output filter capacitor C21 is any one of 0.1uF, 1uF, 10uF or 22uF.

[0072] To further stabilize the voltage signal when the laser power supply control unit 120 supplies power to the laser 200, the laser power supply control unit 120 also includes a second input filter capacitor C12 and a second output filter capacitor C22. The first end of the second input filter capacitor C12 is connected between the power supply unit 110 and the power supply terminal of the power supply voltage control chip 122, and the second end is grounded. The first end of the second output filter capacitor C22 is connected between the output terminal of the power supply voltage control chip 122 and the power supply terminal of the laser 200, and the second end is grounded.

[0073] The capacitance values ​​of the first input filter capacitor C11 and the second input filter capacitor C12 can be different. For example, the capacitance value of the first input filter capacitor C11 is 0.1uF, and the capacitance value of the second input filter capacitor C12 is 22uF.

[0074] Similarly, the capacitance value of the first output filter capacitor C21 and the capacitance value of the second output filter capacitor C22 can be different. For example, the capacitance value of the first output filter capacitor C21 is 10uF and the capacitance value of the second output filter capacitor C22 is 0.1uF.

[0075] It should be understood that the laser power supply control unit 120 may include more or fewer electrical components, which will not be described in detail here. As long as the laser power supply control unit 120 can control the time when the power supply unit 110 provides voltage to the laser 200 according to the pulse width modulation signal, thereby adjusting the output power of the laser 200, and thus adjusting the temperature of the object surface when the laser 200 projects the laser onto the object surface.

[0076] Therefore, by employing the laser power supply control circuit 100 of this application, and by configuring electrical components such as the power supply voltage control chip 122 and the inductor L in the laser power supply control circuit 100, a corresponding pulse width modulation signal can be obtained based on the first temperature, and the pulse width modulation signal can be output to the laser power supply control unit 120. This allows the power supply voltage control chip 122 and the inductor L to control the voltage supplied to the laser 200 by the power supply unit 110 according to the pulse width modulation signal. This enables the adjustment of the output power of the laser 200 per unit time, allowing control of the temperature of the heat therapy when the laser emitted by the laser 200 irradiates the human body, thereby improving the user experience.

[0077] Please see Figure 6This application also provides a laser therapy device, in which the laser power supply control circuit 100 includes a power supply unit 110, a laser power supply control unit 120, a controller 130, and a first temperature acquisition unit 140.

[0078] The power supply unit 110 is connected to the laser power supply control unit 120 and the controller 130, respectively, and is used to provide voltage to the laser power supply control unit 120 and the controller 130. The controller 130 is connected to the first temperature acquisition unit 140 and the laser power supply control unit 120. The first temperature acquisition unit 140 is used to detect the first temperature of the object surface when the laser 200 projects the laser onto the object surface. The controller 130 is used to receive the first temperature and output a pulse width modulation signal obtained according to the first temperature to the laser power supply control unit 120. The laser power supply control unit 120 is used to control the voltage provided by the power supply unit 110 to the laser 200 according to the pulse width modulation signal.

[0079] The first temperature acquisition unit 140 may include a human infrared temperature measurement module, a contact temperature measurement device, or a temperature detection sensor, which can be configured according to the application scenario and requirements of the laser power supply control circuit 100.

[0080] As one possible implementation, the laser power supply circuit is applied to physiotherapy equipment or massage equipment, etc., and the first temperature acquisition unit 140 includes a human infrared temperature measurement module, which is connected to the controller 130.

[0081] By obtaining a corresponding pulse width modulation signal based on the first temperature and outputting the pulse width modulation signal to the laser power supply control unit 120, the laser power supply control unit 120 controls the voltage supplied to the laser 200 by the power supply unit 110 according to the pulse width modulation signal, thereby adjusting the output power of the laser 200 per unit time.

[0082] To further refine the obtained pulse width modulation signal and more accurately control the voltage supplied to the laser 200 by the power supply unit 110 based on the pulse width modulation signal using the laser power supply control unit 120, in this embodiment, the laser power supply control circuit 100 further includes a second temperature acquisition unit 150. The second temperature acquisition unit 150 is connected to the controller 130 and is used to detect the second temperature of the heat dissipation component, which is disposed on the laser 200 and used to dissipate heat from the laser 200. The controller 130 is also used to receive the second temperature and output the pulse width modulation signal obtained based on the first and second temperatures to the laser power supply control unit 120.

[0083] like Figure 7 The diagram shown is a schematic diagram of the specific structure of the heat dissipation component 300. The heat dissipation component 300 may be provided with a first through hole 310 and a second through hole 320, wherein at least one of the first through hole 310 and the second through hole 320 is used to install and fix the heat dissipation component 300.

[0084] In one embodiment, the heat dissipation component 300 can be installed and fixed through the first through hole 310 and used to dissipate heat from the laser 200, and the light emitted by the laser 200 can be emitted through the second through hole 320.

[0085] In another implementation, the heat dissipation component 300 can be sleeved on the laser 200 through the second through hole 320 and fixed through the first through hole 310 for heat dissipation of the laser 200.

[0086] By setting the first temperature acquisition unit 140 and the second temperature acquisition unit 150, corresponding pulse width modulation signals can be obtained based on the first and second temperatures, and output to the laser power supply control unit 120. This allows the laser power supply control unit 120 to control the duration of voltage supply from the power supply unit 110 to the laser 200 based on the pulse width modulation signals. This adjusts the output power of the laser 200 per unit time, enabling the laser emitted by the laser 200 to provide a heat therapy effect when irradiating the human body. During the use of the laser therapy equipment, if the temperature exceeds the human comfort temperature or the laser 200 temperature is too high, the duty cycle of the pulse width modulation signal is automatically reduced to decrease the output power of the laser 200, achieving a comfortable temperature. Conversely, if the temperature falls below the human comfort temperature or the laser 200 temperature is too low, the duty cycle of the pulse width modulation signal is automatically increased to increase the output power of the laser 200, achieving a comfortable temperature. This allows the laser therapy equipment to simultaneously perform laser phototherapy and laser heating therapy, enhancing the user experience.

[0087] The second temperature acquisition unit 150 may include any one of a temperature sensor or a contact temperature measuring device.

[0088] Please see Figure 8 , Figure 8 The diagram shows the specific circuit schematic of the second temperature acquisition unit 150. The second temperature acquisition unit 150 includes a thermistor R11 and a voltage divider resistor R12. The first end of the voltage divider resistor R12 is connected to the power supply unit 110, and the second end is connected to the first end of the thermistor R11 and the controller 130, respectively. The second end of the thermistor R11 is grounded.

[0089] It should be understood that the thermistor R11 should be disposed in the heat dissipation assembly 300, and used to enable the controller 130 to acquire the voltage of the thermistor R11 by utilizing the voltage divider resistor R12 and the thermistor R11, thereby obtaining the temperature of the heat dissipation assembly 300 based on the voltage of the thermistor R11.

[0090] The resistance value of the voltage divider resistor R12 can be any one of 10K ohms, 20K ohms, or 100K ohms. In this embodiment, no specific limitation is made, and it can be selected according to actual needs.

[0091] To make the temperature obtained by the second temperature acquisition unit 150 more accurate, in this embodiment, the second temperature acquisition unit 150 further includes a fifth capacitor C5. The first end of the fifth capacitor C5 is connected between the first end of the thermistor R11 and the second end of the voltage divider resistor R12, and the second end is grounded.

[0092] Among them, the fifth capacitor C5 is a filter capacitor, which can be used to smooth and filter the voltage signal output by the second temperature detection module to the controller 130.

[0093] By employing the laser power supply control circuit 100 of this application, and by setting electrical components such as the first temperature acquisition unit 140, the power supply voltage control chip 122, and the inductor L in the laser power supply control circuit 100, it is possible to obtain a corresponding pulse width modulation signal based on the temperature acquired by the first temperature acquisition unit 140, and output the pulse width modulation signal to the laser power supply control unit 120. This allows the power supply voltage control chip 122 and the inductor L to control the voltage provided by the power supply unit 110 to the laser 200 according to the pulse width modulation signal, thereby adjusting the output power of the laser 200 per unit time. This enables the laser emitted by the laser 200 to have a phototherapy heating effect on the human body when irradiating it, thereby improving the user experience.

[0094] To further improve the performance and safety of laser therapy equipment, please refer to the following: Figure 9 As shown, the laser therapy device also includes a temperature control switch 400, with each laser 200 connected to a corresponding temperature control switch 400. The temperature control switch 400 automatically disconnects when the temperature of the corresponding laser 200 is too high, thereby stopping the laser 200 from emitting laser light. Figure 9 The diagram only shows the case involving two lasers 200 and a corresponding temperature control switch 400 for each laser 200.

[0095] The temperature control switch 400 can disconnect when the temperature of the laser 200 is higher than a preset temperature threshold, such as when it is higher than any of the temperature values ​​of 50 degrees Celsius, 60 degrees Celsius or 65 degrees Celsius, so that the corresponding laser 200 stops emitting laser light.

[0096] Please combine Figure 10 As shown, Figure 10 The following description uses a neck laser therapy device as an example of the laser therapy device provided in this application embodiment. The laser therapy device includes a controller 130, a laser power supply control unit 120, a massage bracket 500, and a laser 200. The massage bracket 500 can be worn on the neck of a human body. The laser 200 is located on the side of the massage bracket 500 facing the neck of the human body. The controller 130 is electrically connected to the laser 200 through the laser power supply control unit 120 and is used to control the power supply unit 110 to provide voltage to the laser 200 through the laser power supply control unit 120 so that the laser 200 emits laser light for a certain period of time.

[0097] Optionally, the controller 130 and the laser power supply control unit 120 can be located inside the massage bracket 500 or inside the laser 200. Optionally, there can be one or more lasers 200.

[0098] Optionally, such as Figure 10 As shown, there are multiple lasers 200, and the multiple lasers 200 can be respectively set on the electrode plates of the massage bracket 500.

[0099] It should be understood that multiple through holes can be provided on the electrode sheet, and multiple lasers 200 can also be provided in the massage bracket 500, and each through hole can correspond to at least one laser 200 so that the light emitted by the laser 200 corresponding to the through hole can be emitted through the through hole.

[0100] Specifically, when the laser therapy device is worn around the user's neck, the light emitted by each laser 200 can pass through the corresponding through-holes and irradiate the user's skin surface.

[0101] It should be understood that Figure 10 The laser therapy device shown is merely illustrative. The laser therapy device in this application may also be a lumbar laser therapy device, a back laser therapy device, an eye laser therapy device, etc., in addition to the neck laser therapy device. These will not be described in detail here.

[0102] Please see Figure 11 This application provides an output control method for a laser therapy device, which can be applied to, for example... Figure 9 The controller 130 in the laser therapy device shown may include the following method:

[0103] Step S110: Output a control signal to the laser power supply control unit to control the laser to output laser light to irradiate the user's skin.

[0104] Step S120: Obtain the first temperature of the user's skin at the laser irradiation site, and adjust the control signal according to the first temperature to control the output power of the laser.

[0105] In one possible implementation, step S120 may be: acquiring the first temperature of the user's skin at the laser irradiation site collected by the temperature acquisition module, wherein the temperature acquisition module may be located at the laser 200 or connected to the laser therapy device.

[0106] It should be noted that the pulse width modulation signals corresponding to different first temperatures have the same high and low level periods but different duty cycles. Therefore, when controlling the laser 200 to operate according to the pulse width modulation signals corresponding to different first temperatures, the laser 200 can operate for different durations within the same time range.

[0107] As one implementation, the above-mentioned method of obtaining the pulse width modulation signal based on the first temperature can be to obtain the pulse width modulation signal based on the correspondence between the first temperature, the preset temperature and the pulse width modulation signal.

[0108] The aforementioned correspondence can be a calculation formula between the first temperature and the pulse width modulation signal.

[0109] As another implementation, the above-mentioned method of adjusting the control signal according to the first temperature can also be to search for a pulse width modulation signal corresponding to the first temperature from a preset database, and the preset database can store multiple temperatures and pulse width modulation signals corresponding to each temperature, and the duty cycle corresponding to different pulse width signals is different.

[0110] In one possible implementation, the control signal is a pulse width modulation (PWM) signal, and step S120 includes: if the first temperature is higher than a predetermined first threshold, reducing the duty cycle of the PWM signal to reduce the output power of the laser; and / or, if the first temperature is lower than the predetermined second threshold, increasing the duty cycle of the PWM signal to increase the output power of the laser.

[0111] To further improve the performance of the laser therapy device and provide better therapeutic effects for users, in this embodiment, the laser therapy device further includes a heat dissipation component for dissipating heat from the laser. The method further includes: obtaining a second temperature of the heat dissipation component; the above step S120 includes: adjusting the control signal according to the first temperature and the second temperature to control the output power of the laser.

[0112] In one possible implementation, the control signal is adjusted according to a first temperature and a second temperature to control the output power of the laser. The controller stores multiple power values ​​and a first temperature range and a second temperature range corresponding to each power value. The target output power can be determined according to the first temperature range and the second temperature range corresponding to the second temperature, so as to control the laser to output the target output power.

[0113] In another possible implementation, the method of adjusting the control signal to control the output power of the laser according to the first temperature and the second temperature may also be as follows: if the first temperature is higher than a predetermined first threshold or the second temperature is higher than a predetermined third threshold, the duty cycle of the PWM signal is reduced to decrease the output power of the laser; and / or, if the first temperature is lower than the predetermined second threshold and the second temperature is lower than the predetermined third threshold, the duty cycle of the PWM signal is increased to increase the output power of the laser.

[0114] In this implementation, the way to increase or decrease the duty cycle of the PWM signal can be by increasing or decreasing the duty cycle of the PWM signal by a preset percentage. The preset percentage can be 5%, 7%, or 10%, etc., and can be set according to actual needs.

[0115] Please refer to the following: Figure 4 By employing steps S110-S120, when a user uses the aforementioned laser therapy device, because the skin surface temperature is initially low when the laser therapy device irradiates the user's skin, the controller 130 can output... Figure 4 The pulse width modulation signal with a large duty cycle, as shown in Figure a, results in a higher output power for the laser 200. As the laser 200 is used for longer periods, the surface temperature of human skin gradually increases, and consequently, the temperature of the laser 200 also gradually increases. Therefore, the controller 130 can adjust the pulse width modulation signal output by one or more of the following: usage time, human skin temperature, and laser 200 temperature, to achieve the desired output power. Figure 4 The adjusted pulse width modulation signal shown in Figure b shows that... Figure 4Compared to diagram a, diagram b shows that within the same high and low level cycle, the duty cycle of the pulse width modulation signal in diagram b is lower than that in diagram a. This means that by adjusting the operating time of the laser 200 within a high and low level signal cycle, its average output power is reduced, thereby achieving a temperature that is comfortable for the human body.

[0116] Therefore, in this embodiment, the controller 130 acquires the first temperature of the user's skin at the laser irradiation site during the operation of the laser therapy device, obtains a corresponding pulse width modulation signal based on the first temperature, and outputs the pulse width modulation signal to the laser power supply control unit 120. This allows the laser power supply control unit 120 to control the duration for which the power supply unit 110 provides voltage to the laser 200 based on the pulse width modulation signal. This adjusts the output power of the laser 200 per unit time, enabling the laser emitted by the laser 200 to provide a heat therapy effect on the human body when irradiated, thereby enhancing the user's experience.

[0117] By employing the above method, a pulse width modulation (PWM) signal is obtained based on a first temperature and a second temperature, and then output to the laser power supply control unit 120. This allows the laser power supply control unit 120 to control the duration of voltage supply from the power supply unit 110 to the laser 200 based on the PWM signal. This adjusts the output power of the laser 200 per unit time, enabling the laser emitted by the laser 200 to provide a thermal effect when irradiating the human body. During use of the laser therapy equipment, if the temperature exceeds the user's comfort level or the laser 200 temperature is too high, the duty cycle of the PWM signal is automatically reduced to decrease the output power of the laser 200, achieving a comfortable temperature. Conversely, if the temperature falls below the user's comfort level or the laser 200 temperature is too low, the duty cycle of the PWM signal is automatically increased to increase the output power of the laser 200, also achieving a comfortable temperature. This allows the laser therapy equipment to simultaneously perform both laser phototherapy and laser thermal therapy, enhancing the user experience.

[0118] It should be understood that the number of the aforementioned lasers 200 can be one or more.

[0119] In one implementation, if there are multiple lasers 200, the multiple lasers 200 can be connected to a laser power supply control unit 120, so that the controller 130 outputs the pulse width modulation signal to a laser power supply control unit 120 to simultaneously control the working state of the multiple lasers 200.

[0120] As another implementation, the multiple lasers 200 can be divided into multiple groups, and there are multiple laser power supply control units 120. Each group of lasers 200 corresponds to one laser power supply control unit 120. Each group of lasers 200 includes at least one laser 200. Correspondingly, there are also multiple groups of first temperatures. The above step S120 can also be to obtain a pulse width modulation signal for controlling the working time of each group of lasers 200 according to the first temperature corresponding to each group of lasers 200.

[0121] It should be understood that, since the controller 130 is configured to execute specific steps in steps S110-S130 or S210-S240 as described in the above embodiments, the controller 130 may include one or more processing cores. The controller 130 connects various parts within the laser therapy device using various interfaces and lines, and executes various functions and processes data of the laser therapy device by running or executing instructions, programs, code sets, or instruction sets stored in memory, and by calling data stored in memory. Optionally, the controller 130 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The controller 130 may integrate one or more of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem is used for wireless communication. It is understandable that the aforementioned modem may not be integrated into the controller 130, but may be implemented using a separate communication chip.

[0122] The memory may include random access memory (RAM) or read-only memory (ROM). The memory can be used to store instructions, programs, code, code sets, or instruction sets. The memory may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch functionality, pulse signal output functionality, etc.), and instructions for implementing the various method embodiments described below. The data storage area may also store data created during terminal use (such as the output frequency, duration, and pulse width of electrical pulse signals).

[0123] In summary, the output control method, laser power supply control circuit 100, and laser therapy device provided in this embodiment include a controller 130, a power supply unit 110, and a laser power supply control unit 120. The controller 130 outputs a pulse width modulation signal to the laser power supply control unit 120 based on the first temperature of the laser therapy device. The laser power supply control unit 120 controls the duration for which the power supply unit 110 provides voltage to the laser 200 based on the pulse width modulation signal. This allows for control of the duration (output power) of the laser 200's voltage supply based on the first temperature of the user's skin at the laser irradiation site, thereby achieving the purpose of heat therapy and enhancing the user's experience.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An output control method for a laser physiotherapy device, characterized in that, The laser therapy device includes a laser for outputting laser light, a laser power supply control unit for supplying power to the laser, and a heat dissipation component for cooling the laser. The maximum output power of the laser is greater than 100mW, and the laser wavelength output by the laser is 622nm-1000nm. The method includes: A control signal is output to the laser power supply control unit to control the laser to output laser light to irradiate the user's skin; The system obtains a first temperature of the user's skin at the laser irradiation site and adjusts the control signal based on the first temperature to control the output power of the laser. The control signal includes a pulse width modulation (PWM) signal, and adjusting the control signal according to the first temperature to control the output power of the laser includes: Obtain the second temperature of the heat dissipation component; If the first temperature is higher than a predetermined first threshold or the second temperature is higher than a predetermined third threshold, the duty cycle of the PWM signal is reduced by a preset ratio to decrease the output power of the laser; and / or, If the first temperature is lower than the predetermined second threshold and the second temperature is lower than the predetermined third threshold, the duty cycle of the PWM signal is increased by a preset ratio to increase the output power of the laser; wherein, the first threshold is greater than the second threshold, and the high and low level periods corresponding to different pulse width modulation signals are the same but the duty cycles are different; the first threshold is any temperature value between 55-60℃, the second threshold is any temperature value between 36-40℃, the third temperature threshold is any temperature value between 50-65℃, and the preset ratio is any ratio between 5%-10%.

2. The method according to claim 1, characterized in that, The control signal is a pulse width modulation (PWM) signal, and adjusting the control signal according to the first temperature to control the output power of the laser includes: If the first temperature is higher than a predetermined first threshold, the duty cycle of the PWM signal is reduced to decrease the output power of the laser; and / or, If the first temperature is lower than the predetermined second threshold, the duty cycle of the PWM signal is increased to increase the output power of the laser.

3. The method according to claim 1, characterized in that, The step of adjusting the control signal according to the first temperature and the second temperature to control the output power of the laser includes: A pulse width modulation signal for controlling the output power of a laser is obtained based on the first temperature, the second temperature, and a preset correspondence. The preset correspondence is used to characterize the relationship between the first temperature, the second temperature, and the duty cycle of the pulse width modulation signal.

4. The method according to any one of claims 1-2, characterized in that, The lasers are in multiple groups, and there are multiple laser power supply control units. Each group of lasers corresponds to one laser power supply control unit. Each group of lasers includes at least one laser. A pulse width modulation signal for controlling the operating time of the lasers is obtained based on operating parameters, including: Based on the operating parameters corresponding to each group of lasers, a pulse width modulation signal is obtained to control the operating time of each group of lasers.

5. A laser physiotherapy device, characterized in that, include: Laser; A heat dissipation assembly for dissipating heat from the laser; The power supply unit is used to provide voltage; A laser power supply control unit, wherein a first end of the laser power supply control unit is connected to the power supply unit, and a second end is used to connect to the laser; The controller is connected to the third terminal of the power supply unit and the laser power supply control unit respectively. The controller is used to output a control signal to the laser power supply control unit to control the laser to output laser to irradiate the user's skin, and to obtain a first temperature of the user's skin at the laser irradiation site, and adjust the control signal according to the first temperature to control the output power of the laser. The control signal includes a pulse width modulation (PWM) signal. The controller is also used to acquire a second temperature of the heat dissipation component; when the first temperature is higher than a predetermined first threshold or the second temperature is higher than a predetermined third threshold, the duty cycle of the PWM signal is reduced by a preset percentage to decrease the output power of the laser; and / or, when the first temperature is lower than the predetermined second threshold and the second temperature is lower than the predetermined third threshold, the duty cycle of the PWM signal is increased by a preset percentage to increase the output power of the laser; wherein the first threshold is greater than the second threshold, different pulse width modulation signals correspond to the same high and low level periods but different duty cycles; the first threshold is any temperature value between 55-60℃, the second threshold is any temperature value between 36-40℃, the third temperature threshold is any temperature value between 50-65℃, and the preset percentage is any percentage between 5%-10%.

6. The laser therapy device according to claim 5, characterized in that, The laser power supply control unit includes a power voltage control chip and an inductor; The power supply voltage control chip has a power supply terminal connected to the power supply unit, an enable terminal connected to the controller for receiving pulse width modulation signals sent by the controller, an output terminal connected to the power input terminal of the laser, and a feedback terminal connected to the feedback terminal of the laser. The inductor is connected between the input and output terminals of the power supply voltage control chip.

7. The laser therapy device according to claim 6, characterized in that, The laser power supply control unit further includes a diode and a first current-limiting resistor. The anode of the diode is connected to the output terminal of the power supply voltage control chip, and the cathode is connected to the power input terminal of the laser. The first end of the first current-limiting resistor is connected between the feedback terminal of the power supply voltage control chip and the feedback terminal of the laser, and the second end is grounded.

8. The laser therapy device according to claim 7, characterized in that, The laser power supply control unit further includes a second current-limiting resistor, the first end of which is connected between the feedback terminal of the power supply voltage control chip and the feedback terminal of the laser, and the second end is grounded.

9. The laser therapy device according to claim 6, characterized in that, The laser power supply control unit further includes a first input filter capacitor and a first output filter capacitor. The first end of the first input filter capacitor is connected between the power supply unit and the power supply terminal of the power supply voltage control chip, and the second end is grounded. The first end of the first output filter capacitor is connected between the output terminal of the power supply voltage control chip and the power supply terminal of the laser, and the second end is grounded.

10. The laser therapy device according to claim 9, characterized in that, The laser power supply control unit further includes a second input filter capacitor and a second output filter capacitor. The first end of the second input filter capacitor is connected between the power supply unit and the power supply terminal of the power supply voltage control chip, and the second end is grounded. The first end of the second output filter capacitor is connected between the output terminal of the power supply voltage control chip and the power supply terminal of the laser, and the second end is grounded.

11. The laser therapy device according to claim 5, characterized in that, The laser power supply control unit also includes a first temperature acquisition unit, which is connected to the controller and is used to detect the first temperature of the user's skin surface when the laser projects the laser onto the user's skin. The controller is also used to receive the first temperature and output a pulse width modulation signal obtained based on the first temperature to the laser power supply control unit.

12. The laser therapy device according to claim 11, characterized in that, The first temperature acquisition unit includes a human infrared temperature measurement module, which is connected to the controller.

13. The laser therapy device according to claim 11, characterized in that, The laser power supply control unit also includes a second temperature acquisition unit; The second temperature acquisition unit is connected to the controller and is used to detect the second temperature of the heat dissipation component. The heat dissipation component is disposed on the laser and is used to dissipate heat from the laser. The controller is also used to receive the second temperature and output a pulse width modulation signal obtained based on the first temperature and the second temperature to the laser power supply control unit.

14. The laser therapy device according to claim 13, characterized in that, The second temperature acquisition unit includes a thermistor and a voltage divider resistor. The first end of the voltage divider resistor is connected to the power supply unit, and the second end is connected to the first end of the thermistor and the controller, respectively. The second end of the thermistor is grounded.

15. The laser therapy device according to claim 14, characterized in that, The second temperature acquisition unit also includes a fifth capacitor, the first end of which is connected between the first end of the thermistor and the second end of the voltage divider resistor, and the second end is grounded.

16. The laser therapy device according to any one of claims 5-15, characterized in that, The power supply unit includes a power supply circuit and a charging management circuit. The input terminal of the power supply circuit is connected to an external power source, and the output terminal is connected to the input terminal of the charging management circuit. The output terminal of the charging management circuit is connected to the first terminal of the controller and the laser power supply control unit, respectively.

17. The laser therapy device according to any one of claims 5-15, characterized in that, There are multiple lasers, and the laser power supply control unit is connected to each of the multiple lasers respectively.

18. The laser therapy device according to any one of claims 5-15, characterized in that, The laser emitted by the laser has a wavelength of any one of 830nm, 808nm, 650nm, and 635nm.

Images