Temperature-controlled speed-adjusted weft light illuminator and control method thereof

Abstract

This invention relates to the field of medical device technology, specifically to a temperature-controlled and speed-adjustable phototherapy device and its control method. It includes a housing with a ventilation opening at one end. A light source module for emitting a therapeutic beam is located inside the housing. A filter assembly is provided on the light-emitting side of the light source module to filter the beam. A reflector with a temperature sensor is located near the light source module. A speed-adjustable fan is also located inside the housing, along with a control PCBA assembly electrically connected to the temperature sensor and the fan. The control PCBA assembly is configured to dynamically adjust the speed of the speed-adjustable fan based on the real-time temperature signal collected by the temperature sensor.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to a temperature-controlled and speed-regulating irradiation device and its control method. Background Technology

[0002] Photobiomodulation therapy (PBMT), developed since the 1960s, has been widely used for pain relief, inflammation regulation, and wound healing. PBMT primarily works through mitochondrial mechanisms, using light sources of specific wavelengths (typically a continuous band of 560-1400 nm) to promote the activity of cytochrome C oxidase (CCO) in the mitochondrial inner membrane. This CCO replaces NO in binding with NO, leading to increased ATP production in the mitochondria and thus promoting cell growth and repair.

[0003] In existing technologies, one of the key factors determining the efficacy of PBMT is optical power density. As clinical demands for optical power increase, the power of the light emitter also increases, leading to significant heat generation during operation. Traditional light irradiation devices typically employ passive or constant-speed cooling using ordinary DC fans and metal heat sinks. However, this approach has several significant drawbacks: constant-speed fans cannot adjust their rotation speed according to real-time temperature changes, resulting in excessive energy consumption and noise at low loads and insufficient cooling at high loads; to ensure effective cooling, large heat sinks are often required, making the device bulky and inconvenient for handheld or portable operation; and delayed heat dissipation can easily lead to overheating of the filter and reflector, posing a risk of burns to the patient's skin. High temperatures also accelerate the aging of optical components, affecting filter accuracy. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this invention is to provide a temperature-controlled and speed-regulating illuminator and its control method, which has the advantages of solving the problems mentioned in the background art.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A temperature-controlled and speed-adjustable phototherapy device and its control method are disclosed. The device includes a housing with a ventilation opening at one end. A light source module for emitting a therapeutic beam is located inside the housing. A filter assembly is provided on the light-emitting side of the light source module to filter the beam. A reflector is also located near the light source module, and a temperature sensor is mounted on the reflector. A speed-adjustable fan is also located inside the housing, along with a control PCBA assembly electrically connected to the temperature sensor and the speed-adjustable fan. The control PCBA assembly is configured to dynamically adjust the speed of the speed-adjustable fan based on the real-time temperature signal collected by the temperature sensor.

[0006] Furthermore, the housing of the filter device assembly is integrally formed of aluminum alloy material, and its outer surface is provided with a plurality of fin-shaped heat dissipation fins; an air duct is formed between adjacent heat dissipation fins, and the air duct is aligned with the wind direction of the speed control fan.

[0007] Furthermore, the temperature sensor is an NTC thermistor or a thermocouple, and its sensing end is closely attached to the metal surface of the reflector through a heat-conducting medium, so as to monitor the temperature change of the optical path system in real time.

[0008] Furthermore, a target temperature threshold Ttarget and a hysteresis interval ΔT are preset in the control PCBA component; when the real-time temperature Treal satisfies Treal>Ttarget+ΔT, the control PCBA component outputs a first control signal to increase the fan speed; when Treal<Ttarget−ΔT, a second control signal is output to reduce the fan speed.

[0009] Furthermore, the control PCBA component controls the voltage of the speed control fan by outputting PWM pulse signals with different duty cycles, so as to achieve stepless or hierarchical adjustment of the fan speed.

[0010] Furthermore, the reflector is sleeved around the light source module, and the inner wall of the reflector is coated with a high-reflectivity coating to converge the light emitted by the light source to the filter device assembly.

[0011] Furthermore, a temperature-controlled speed-regulating WIRA illuminator and its control method include the following steps: S1. System initialization: Start the light source module and the speed control fan, and the system enters the working state; S2. Data acquisition: The temperature sensor continuously acquires the surface temperature Treal of the reflector or the filter device assembly, and converts the temperature signal into an electrical signal and sends it to the control PCBA component; S3. Logic judgment: The control PCBA component compares the real-time temperature Treal with the preset target temperature threshold Ttarget (for example, 45°C); S4. Dynamic speed regulation: If Treal<Ttarget−ΔT (ΔT is the hysteresis interval, such as 5°C), the control PCBA component outputs a low-level PWM signal to reduce the speed control fan speed to the idle state; if Ttarget−ΔT≤Treal≤Ttarget+ΔT, the current fan speed is maintained; if Treal>Ttarget+ΔT, the control PCBA component outputs a high-level PWM signal to linearly or stepwise increase the speed control fan speed until the maximum speed is reached. ; S5. Loop monitoring: Repeat steps S2-S4 to form a closed-loop negative feedback control.

[0012] In summary, the present invention has the following beneficial effects: This invention achieves precise real-time temperature control of the optical path system by integrating a dynamic temperature monitoring system with an intelligent speed-regulating fan and an innovative fish-fin-shaped heat dissipation fin design. This solution not only effectively solves the problems of high-temperature burns, accelerated aging of optical components, and performance degradation caused by insufficient heat dissipation in traditional phototherapy equipment, but also significantly reduces equipment energy consumption and operating noise, improving overall energy efficiency. Simultaneously, by optimizing the heat dissipation structure, it reduces the size and weight of the equipment, enhancing portability and operational comfort, extending equipment lifespan, and lowering long-term maintenance costs, providing a safer, more efficient, economical, and patient-friendly treatment option for clinical phototherapy. Attached Figure Description

[0013] The accompanying drawings, which are provided to further illustrate the invention and form part of this application, are not intended to unduly limit the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded view of the structure of the present invention.

[0014] In the diagram, 1. Main casing; 2. Ventilation vent; 3. Light source module; 4. Filter assembly; 5. Reflector; 6. Temperature sensor; 7. Variable speed fan; 8. PCBA assembly; 9. Heat sink fins; 10. Air duct. Detailed Implementation

[0015] The foregoing and other technical contents, features and effects of the present invention are described in conjunction with the appendix below. Figure 1 To be continued Figure 2 The detailed description of the embodiments will make this clear. All structural details mentioned in the following embodiments are based on the accompanying drawings.

[0016] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0017] Example 1: A temperature-controlled and speed-regulating Viva illuminator and its control method, such as Figure 1 , 2As shown in the figure, it includes the whole machine housing 1. One end of the whole machine housing 1 is provided with a ventilation port 2. Inside the whole machine housing 1, there is a light source module 3 for emitting treatment light beams. On the light-emitting side of the light source module 3, there is a filter device assembly 4 for filtering the light beams. The housing of the filter device assembly 4 is integrally formed of aluminum alloy material, and its outer surface is provided with several fin-shaped heat dissipation fins 9. A ventilation duct 10 is formed between adjacent heat dissipation fins 9, and the ventilation duct 10 is aligned with the wind direction of the speed control fan 7. Near the light source module 3, there is also a reflector 5. The reflector 5 is sleeved around the light source module 3, and the inner wall of the reflector 5 is coated with a high-reflectivity coating to converge the light emitted by the light source to the filter device assembly 4. A temperature sensor 6 is provided on the reflector 5. The temperature sensor 6 is an NTC thermistor or a thermocouple, and its sensing end is closely attached to the metal surface of the reflector 5 through a heat-conducting medium for real-time monitoring of the temperature change of the optical path system. Inside the whole machine housing 1, there is also a speed control fan 7, and inside the whole machine housing 1, there is also a control PCBA assembly 8 electrically connected to the temperature sensor 6 and the speed control fan 7. Among them, the control PCBA assembly 8 is configured to dynamically adjust the speed of the speed control fan 7 according to the real-time temperature signal collected by the temperature sensor 6. A target temperature threshold Ttarget and a hysteresis interval ΔT are preset in the control PCBA assembly 8. When the real-time temperature Treal satisfies Treal>Ttarget+ΔT, the control PCBA assembly 8 outputs a first control signal to increase the fan speed; when Treal<Ttarget−ΔT, a second control signal is output to decrease the fan speed.

[0018] A temperature-controlled speed-regulating WIRA light irradiator and its control method include the following steps: S1. Start the light source module 3 and the speed control fan 7, and the system enters the working state; S2. Real-time collect the temperature data Treal in the optical path system through the temperature sensor 6; S3. Transmit Treal to the PCBA assembly 8 to generate a corresponding PWM control signal; S4. Generate a corresponding PWM control signal by the control PCBA assembly 8 according to the comparison result; S5. The speed control fan 7 responds to the PWM signal and adjusts its speed to achieve dynamic balance of the heat dissipation amount.

[0019] In an embodiment of the present invention, system initialization: Start the light source module 3 and the speed-regulating fan 7, and the system enters the working state; The temperature sensor 6 continuously collects the surface temperature Treal of the reflector 5 or the filter device assembly 4, and converts the temperature signal into an electrical signal and sends it to the control PCBA assembly 8; The control PCBA assembly 8 compares the real-time temperature Treal with a preset target temperature threshold Ttarget (for example, 45°C); If Treal < Ttarget - ΔT (ΔT is the hysteresis interval, such as 5°C), then the control PCBA assembly 8 outputs a low-level PWM signal to reduce the speed of the speed-regulating fan 7 to the idle state; If Ttarget - ΔT ≤ Treal ≤ Ttarget + ΔT, the current fan speed is maintained. If Treal > Ttarget + ΔT, the control PCBA assembly 8 outputs a high-level PWM signal to linearly or stepwise increase the speed of the speed-regulating fan 7 until the maximum speed is reached. Repeat the above steps to form a closed-loop negative feedback control.

[0020] The above is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to this; For those skilled in the art of the present invention and related technical fields, based on the technical solution idea of the present invention, the expansions, operation methods, and data replacements should all fall within the protection scope of the present invention.

Claims

1. A temperature-controlled and speed-regulating Viva illuminator and its control method, characterized in that: It includes the whole machine housing (1), one end of the whole machine housing (1) is provided with a ventilation port (2), and a light source module (3) for emitting a treatment beam is arranged inside the whole machine housing (1); a filter device assembly (4) is arranged on the light-emitting side of the light source module (3) for filtering the beam; a reflector (5) is also arranged adjacent to the light source module (3), and a temperature sensor (6) is arranged on the reflector (5); a speed-regulating fan (7) is also arranged inside the whole machine housing (1), and a control PCBA assembly (8) electrically connected to the temperature sensor (6) and the speed-regulating fan (7) is also arranged inside the whole machine housing (1); wherein the control PCBA assembly (8) is configured to dynamically adjust the speed of the speed-regulating fan (7) according to the real-time temperature signal collected by the temperature sensor (6).

2. The temperature-controlled and speed-regulating Viva illuminator and its control method according to claim 1, characterized in that: The housing of the filter device assembly (4) is integrally formed of aluminum alloy material, and a plurality of fin-shaped heat dissipation fins (9) are arranged on its outer surface; a duct (10) is formed between adjacent heat dissipation fins (9), and the duct (10) is aligned with the wind direction of the speed-regulating fan (7).

3. The temperature-controlled and speed-regulating Viva illuminator and its control method according to claim 1, characterized in that: The temperature sensor (6) is an NTC thermistor or a thermocouple, and its sensing end is closely attached to the metal surface of the reflector (5) through a heat-conducting medium for real-time monitoring of the temperature change of the optical path system.

4. The temperature-controlled and speed-regulating Viva illuminator and its control method according to claim 1, characterized in that: A target temperature threshold Ttarget and a hysteresis interval ΔT are preset in the control PCBA assembly (8); when the real-time temperature Treal satisfies Treal>Ttarget+ΔT, the control PCBA assembly (8) outputs a first control signal to increase the fan speed; when Treal<Ttarget−ΔT, a second control signal is output to reduce the fan speed.

5. The temperature-controlled and speed-regulating Viva illuminator and its control method according to claim 4, characterized in that: The control PCBA assembly (8) controls the voltage of the speed-regulating fan (7) by outputting PWM pulse signals with different duty cycles, so as to achieve stepless or stepped adjustment of the fan speed.

6. The temperature-controlled and speed-regulating Viva illuminator and its control method according to claim 1, characterized in that: The reflector (5) is sleeved around the light source module (3), and a high-reflectivity coating is applied to the inner wall of the reflector (5) to converge the light emitted by the light source to the filter device assembly (4).

7. A temperature-controlled and speed-regulating illuminator and its control method according to claims 1-6, characterized in that: It includes the following steps: S1. Start the light source module (3) and the speed-regulating fan (7), and the system enters the working state; S2. Real-time collect the temperature data Treal in the optical path system through the temperature sensor (6); S3. Transmit Treal to the PCBA assembly (8) to generate a corresponding PWM control signal; S4. Generate a corresponding PWM control signal by the control PCBA assembly (8) according to the comparison result; S5. The speed-regulating fan (7) responds to the PWM signal and adjusts its speed to achieve dynamic balance of the heat dissipation amount.

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