A contact-type non-invasive ultraviolet phototherapy device and its implementation method for promoting the conversion of vitamin D3 in the human body

Abstract

This invention belongs to the field of ultraviolet phototherapy technology, specifically relating to a contact-type non-invasive ultraviolet phototherapy device and its implementation method for promoting VD3 conversion in the human body. It includes a temperature acquisition module for acquiring ambient temperature, comprising an NTC thermistor and a temperature acquisition chip, which are located adjacently for temperature acquisition under the same ambient temperature; a microcontroller connected to the temperature acquisition module via a power and data transmission interface, for supplying power to the temperature acquisition module and receiving the transmitted temperature data; a UVB constant current drive module connected to the microcontroller; and a pressure sensor module including a first pressure sensor and a second pressure sensor. This invention addresses the safety, stability, and reliability of the contact-type non-invasive ultraviolet phototherapy device from multiple perspectives and provides effective control measures for the effectiveness of phototherapy time.

Description

Technical Field

[0001] This invention belongs to the field of ultraviolet phototherapy technology, specifically relating to a contact-type non-invasive ultraviolet phototherapy device and its implementation method for promoting the conversion of VD3 in the human body. Background Technology

[0002] As people place increasing importance on health, the demand for efficient and safe medical devices is growing. Among the many medical needs, promoting the conversion of vitamin D3 in the human body has become a focus of attention. Vitamin D3 plays an important role in bone health and immune regulation, and how to safely and effectively promote the conversion of vitamin D3 through external means is an important direction for current medical device research and development.

[0003] Existing phototherapy equipment has some shortcomings in promoting the conversion of vitamin D3 in the human body. First, in terms of temperature control, traditional phototherapy equipment often uses a single temperature acquisition method, which has limitations in terms of accuracy and reliability. Once the temperature acquisition is deviated, it may lead to excessively high or low temperatures during phototherapy, affecting the treatment effect or even causing harm to the patient.

[0004] Secondly, in terms of UVB lamp chip drive control, traditional drive methods lack precise control of the drive current and fault diagnosis functions. As the core component of phototherapy equipment, the stability and safety of UVB lamp chips are crucial. If the drive current is unstable or malfunctions, it will not only affect the lifespan of the lamp chips, but may also lead to unstable phototherapy effects and even safety hazards.

[0005] Furthermore, regarding safety in phototherapy, existing equipment often lacks effective detection mechanisms to ensure user safety during the treatment process. For example, it cannot accurately determine whether the body is in close contact with the phototherapy panel, which could lead to the user's eyes being directly exposed to the UVB light source, causing risks such as eye damage.

[0006] Furthermore, traditional phototherapy equipment often cannot accurately record and accumulate the total phototherapy duration, or dynamically adjust the phototherapy time based on the actual contact with the body during the treatment. This can lead to insufficient or excessive phototherapy time, affecting the treatment effect and patient experience.

[0007] In summary, existing phototherapy devices have many problems in terms of temperature control, UVB lamp driving, safety protection, and phototherapy time control. A more intelligent, safe, and reliable phototherapy device is needed to meet the needs of promoting the conversion of VD3 in the human body. Summary of the Invention

[0008] To address the technical problems of existing phototherapy devices, this invention provides a contact-type ultraviolet non-invasive phototherapy device and its implementation method that promotes the conversion of VD3 in the human body.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] A contact-type non-invasive ultraviolet phototherapy device that promotes the conversion of vitamin D3 in the human body includes:

[0011] A temperature acquisition module is used to acquire ambient temperature. The temperature acquisition module includes an NTC thermistor and a temperature acquisition chip. The NTC thermistor and the temperature acquisition chip are located adjacent to each other and are used to acquire temperature under the same ambient temperature.

[0012] A microcontroller is connected to the temperature acquisition module via a power and data transmission interface to power the temperature acquisition module and receive the temperature data transmitted by it.

[0013] The UVB constant current drive module is connected to the microcontroller and is used to drive the UVB lamp beads with constant current. It includes a constant current drive chip and a threshold resistor. The constant current drive chip is a multi-channel constant current drive chip, and the threshold resistor is used to set the single-channel current threshold of the constant current drive chip.

[0014] The pressure sensor module includes a first pressure sensor and a second pressure sensor, which are distributed on both sides of the upper plane of the contact ultraviolet non-invasive phototherapy device to detect whether the human body is in close contact with the phototherapy plate.

[0015] The microcontroller is also used to control the start, pause, continuation and end of phototherapy based on the detection results of the pressure sensor module, as well as to record and accumulate the total duration of phototherapy.

[0016] The NTC thermistor in the temperature acquisition module uses an analog signal acquisition method, and the temperature acquisition chip uses an I2C communication method. The NTC thermistor and the temperature acquisition chip are respectively connected to a microcontroller to realize the acquisition and transmission of temperature signals.

[0017] The constant current drive chip in the UVB constant current drive module has open-circuit and short-circuit diagnostic functions for single-channel drive current, and can transmit fault information to the microcontroller via I2C communication.

[0018] The detection signals from the first and second pressure sensors in the pressure sensor module are both transmitted to the microcontroller. The microcontroller determines whether the conditions for phototherapy initiation and continuation are met based on a preset pressure threshold.

[0019] A method for implementing a contact-type non-invasive ultraviolet phototherapy device that promotes the conversion of VD3 in the human body includes the following steps:

[0020] Temperature safety control: Temperature is acquired through NTC thermistors and temperature acquisition chips. In failure scenarios, the data from a single, unfailed temperature source is used as the actual valid data. In non-failure scenarios, temperature is compared. If the compared data is within the required range, the temperature is normal; otherwise, a fault is reported.

[0021] Stable drive control for UVB lamp beads: A UVB constant current drive module is used to drive the UVB lamp beads with constant current. The open circuit and short circuit diagnosis function of the constant current drive chip is used to realize closed-loop monitoring of the drive current and dynamically adjust the total threshold current of the UVB lamp beads according to the fault condition.

[0022] UVB radiation safety protection: The pressure sensor module detects whether the human body is close to the phototherapy plate. Phototherapy is only activated when the pressure value is not lower than the preset threshold, ensuring that the user's eyes do not look directly at the UVB light source.

[0023] User effective treatment time guarantee: Based on the real-time detection results of the pressure sensor module, the start, pause, continuation and end of phototherapy are controlled, and the total phototherapy duration is recorded and accumulated to ensure the effectiveness and integrity of the phototherapy process.

[0024] In the temperature safety control procedure, the failure scenario is the failure of a single temperature source acquisition in the NTC thermistor and the temperature acquisition chip, and the non-failure scenario is that neither the NTC thermistor nor the temperature acquisition chip fails.

[0025] In the stable drive control step of UVB lamp beads, when the microcontroller detects an open circuit or short circuit fault in the N drive currents, it shuts down the constant current drive function of the faulty line and readjusts the total threshold current of the UVB lamp beads; the adjusted total threshold current of the UVB lamp beads = the total threshold current of the UVB lamp beads before adjustment - the threshold current of a single UVB lamp bead × N, thereby realizing the dynamic control of the drive current threshold of the UVB lamp beads under sudden abnormal conditions.

[0026] In the UVB radiation safety protection procedure, phototherapy is only activated when the pressure values ​​of both the first and second pressure sensors are not lower than the preset pressure threshold for phototherapy activation.

[0027] In the process of ensuring effective treatment time for the user, when the human body is completely in close contact with the phototherapy plate of the contact ultraviolet non-invasive phototherapy device, and the microcontroller simultaneously collects the pressure values ​​from the first and second pressure sensors and finds that they are not lower than the preset pressure threshold for phototherapy activation, the phototherapy activation condition is met, and the contact ultraviolet non-invasive phototherapy device can start phototherapy, and the total phototherapy time is reset to zero; when the microcontroller continuously collects the pressure values ​​from the first and second pressure sensors and finds that they are not lower than the preset pressure threshold for continuous phototherapy, the phototherapy maintenance condition is met, and the contact ultraviolet non-invasive phototherapy device continuously maintains phototherapy; during the phototherapy process... When the human body leaves the light-emitting surface of the contact ultraviolet non-invasive phototherapy device, the microcontroller continuously collects the pressure values ​​from the first and second pressure sensors. If these values ​​are below the preset pressure threshold for continuous phototherapy, and the remaining phototherapy time is not zero, the conditions for pausing phototherapy are met. The contact ultraviolet non-invasive phototherapy device then pauses phototherapy. At this point, the total phototherapy duration is saved and recorded, and a countdown for the return time begins. If the return time countdown is not zero, the human body returns to the phototherapy plate of the contact ultraviolet non-invasive phototherapy device, and the microcontroller continuously collects the pressure values ​​from the first and second pressure sensors. If the pressure value of the force sensor is not lower than the preset pressure threshold for continuous phototherapy, the conditions for continuing phototherapy are met, and the contact ultraviolet non-invasive phototherapy device continues phototherapy, accumulating and recording the total phototherapy time. If the countdown to the return time is zero, and the human body is not in close contact with the phototherapy plate of the contact ultraviolet non-invasive phototherapy device, and the pressure values ​​of the first and second pressure sensors continuously collected by the microcontroller in real time are lower than the preset pressure threshold for continuous phototherapy, the first condition for ending phototherapy is met, and the phototherapy ends. The total phototherapy time is the total phototherapy time when the human body last left the phototherapy plate of the contact ultraviolet non-invasive phototherapy device. The recording process is as follows: If the total phototherapy duration equals the preset total phototherapy duration, the second condition for ending phototherapy is met, the contact ultraviolet non-invasive phototherapy device completes a single phototherapy session, the phototherapy ends, and the total phototherapy duration is the preset total phototherapy duration; if the stop phototherapy button of the contact ultraviolet non-invasive phototherapy device is pressed during the phototherapy process or pause, the third condition for ending phototherapy is met, the contact ultraviolet non-invasive phototherapy device ends the phototherapy, and the total phototherapy duration is the phototherapy duration recorded in real time; through the control of the user's effective phototherapy logic, the effective calculation of the total phototherapy duration during the phototherapy process is ensured, so as to effectively guarantee the user's effective treatment time.

[0028] Compared with the prior art, the beneficial effects of this invention are:

[0029] This invention addresses the safety, stability, and reliability of contact-type ultraviolet non-invasive phototherapy devices from multiple perspectives, and provides effective control measures for the effectiveness of phototherapy time. The implementation method of this invention is highly operable, based on the quality and performance requirements of medical devices and the actual needs of user application scenarios. It can more safely and effectively ensure that phototherapy with contact-type ultraviolet non-invasive phototherapy devices is safer and more effective than medication, while avoiding the side effects of oral medication. Attached Figure Description

[0030] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0031] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0032] Figure 1 Electrical diagram for temperature acquisition redundancy design provided in embodiments of the present invention;

[0033] Figure 2 Electrical diagram for constant current drive of UVB lamp beads provided in embodiments of the present invention;

[0034] Figure 3 This invention provides a software logic diagram for dynamically adjusting the driving current threshold of UVB lamp beads under sudden abnormal conditions.

[0035] Figure 4 This is a schematic diagram of the structure of the pressure sensor and the contact-type ultraviolet non-invasive phototherapy device provided in an embodiment of the present invention;

[0036] Figure 5 A logic diagram of the user effective treatment time guarantee method provided in the embodiments of the present invention.

[0037] The module is as follows: 1 is the temperature acquisition module, 1-1 is the NTC thermistor, 1-2 is the temperature acquisition chip, and 1-3 is the power supply and data transmission interface; 2 is the UVB constant current drive module, 2-1 is the UVB lamp bead, 2-2 is the constant current drive chip, 2-3 is the microcontroller, and 2-4 is the threshold resistor; 3 is the dynamic control of the drive current threshold, 3-1 is the threshold current of a single UVB lamp bead, 3-2 is the drive current of a single UVB lamp bead, and 3-3 is the total threshold current of the UVB lamp beads; 4 is the pressure sensor module, 4-1 is the first pressure sensor, and 4-2 is the second pressure sensor; 5 is the user's effective phototherapy logic, 5-1 is the phototherapy start condition, 5-2 is the phototherapy maintenance condition, 5-3 is the phototherapy pause condition, 5-4 is the phototherapy continue condition, 5-5 is the first phototherapy end condition, 5-6 is the second phototherapy end condition, 5-7 is the third phototherapy end condition, and 5-8 is the total phototherapy duration; 6 is the contact-type non-invasive ultraviolet phototherapy device. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. These descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the claims of the present invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Example 1

[0043] This embodiment provides a contact-type non-invasive ultraviolet phototherapy device that promotes the conversion of VD3 in the human body, such as... Figure 1-4 As shown, it includes:

[0044] Temperature acquisition module 1 is used to acquire ambient temperature. Temperature acquisition module 1 includes NTC thermistor 1-1 and temperature acquisition chip 1-2, which are located adjacent to each other and are used to acquire temperature under the same ambient temperature.

[0045] The microcontroller 2-3 is connected to the temperature acquisition module 1 through the power and data transmission interface 1-3. It is used to power the temperature acquisition module 1 and receive the temperature data transmitted by it.

[0046] The UVB constant current drive module 2 is connected to the microcontroller 2-3 and is used to drive the UVB lamp bead 2-1 with constant current. It includes a constant current drive chip 2-2 and a threshold resistor 2-4. The constant current drive chip 2-2 is a multi-channel constant current drive chip, and the threshold resistor 2-4 is used to set the single-channel current threshold of the constant current drive chip 2-2.

[0047] The pressure sensor module 4 includes a first pressure sensor 4-1 and a second pressure sensor 4-2. The first pressure sensor 4-1 and the second pressure sensor 4-2 are distributed on both sides of the upper plane of the contact ultraviolet non-invasive phototherapy device 6, and are used to detect whether the human body is close to the phototherapy plate.

[0048] The microcontroller 2-3 is also used to control the start, pause, continue and end of phototherapy based on the detection results of the pressure sensor module 4, as well as to record and accumulate the total phototherapy duration 5-8.

[0049] Furthermore, the NTC thermistor 1-1 in the temperature acquisition module 1 adopts an analog signal acquisition method, and the temperature acquisition chip 1-2 adopts an I2C communication method. The NTC thermistor 1-1 and the temperature acquisition chip 1-2 are respectively connected to the microcontroller 2-3 to realize the acquisition and transmission of temperature signals.

[0050] Furthermore, the constant current drive chip 2-2 in the UVB constant current drive module 2 has the function of open circuit and short circuit diagnosis of single-channel drive current, and can transmit fault information to the microcontroller 2-3 through I2C communication.

[0051] Furthermore, the detection signals of the first pressure sensor 4-1 and the second pressure sensor 4-2 in the pressure sensor module 4 are both transmitted to the microcontroller 2-3. The microcontroller 2-3 determines whether the conditions for phototherapy start-up and continuity are met based on the preset pressure threshold.

[0052] Example 2

[0053] This embodiment provides a method for implementing a contact-type non-invasive ultraviolet phototherapy device that promotes the conversion of VD3 in the human body, including:

[0054] The temperature safety control method includes temperature acquisition and calculation in two scenarios: redundant temperature acquisition under failure mode and temperature comparison under non-failure mode, achieved by using NTC thermistor 1-1 and temperature acquisition chip 1-2. NTC thermistor 1-1 and temperature acquisition chip 1-2 are located on the same temperature acquisition module 1, on the same side of the module, and adjacent to each other, ensuring that they acquire the same ambient temperature. Microcontroller 2-3 supplies power to temperature acquisition module 1 through power and data transmission interface 1-3 and transmits temperature data. NTC thermistor 1-1 uses analog signal acquisition by microcontroller 2-3, while temperature acquisition chip 1-2 uses I2C communication. The temperature generation methods of NTC thermistor 1-1 and temperature acquisition chip 1-2 are different, and their temperature signal acquisition methods are also inconsistent, ensuring the effectiveness of failure redundancy. The failure scenario is defined as the failure of a single temperature source acquisition by NTC thermistor 1-1 and temperature acquisition chip 1-2. The non-failure mode is defined as where both the NTC thermistor 1-1 and the temperature acquisition chip 1-2 remain intact. In a failure scenario, data from a single intact temperature source is considered valid. In a non-failure scenario, both temperature sources acquire data and perform temperature calibration. If the calibrated data is within the required range, the temperature is normal, meeting the temperature conditions for phototherapy initiation and execution. Otherwise, the temperature acquisition system reports a corresponding audio-visual fault. Through this method and logic, safe temperature control is ensured, guaranteeing the temperature safety of the application portion of the contact ultraviolet non-invasive phototherapy device.

[0055] The stable drive control method for UVB LED chips includes three measures: constant current drive of UVB LED chips, closed-loop monitoring of drive current, and dynamic adjustment of drive current threshold. The UVB constant current drive module 2 consists of N UVB LED chips 2-1, a constant current drive chip 2-2, a microcontroller 2-3, and a threshold resistor 2-4. The constant current drive chip 2-2 is a constant current drive chip with M channels. The threshold resistor 2-4 is used to set the single-channel current threshold of the constant current drive chip 2-2 (i.e., the threshold current 3-1 for a single UVB LED chip), thus achieving constant current drive for a single LED chip. The total threshold current 3-3 for UVB LED chips is the total threshold current of the actual drive channels used by the constant current drive chip 2-2. The total threshold current 3-3 for UVB LED chips is equal to the product of the actual number of drive channels used by the constant current drive chip 2-2 and the threshold current 3-1 for a single UVB LED chip. The constant current drive chip 2-2 has M channels of constant current drive function, and also has open circuit and short circuit diagnosis function for single channel drive current. It can transmit open circuit and short circuit faults of single channel drive current to microcontroller 2-3 via I2C communication to realize closed-loop monitoring of drive current. When microcontroller 2-3 obtains open circuit or short circuit faults in N channels of drive current, microcontroller 2-3 shuts down the constant current drive function of the faulty line via I2C communication, and readjusts the total threshold current 3-3 of UVB lamp beads. The adjustment method is: adjusted total threshold current 3-3 of UVB lamp beads = adjusted total threshold current 3-3 of UVB lamp beads - threshold current of UVB single lamp bead 3-1 × N, realizing dynamic control of the drive current threshold of UVB lamp beads in the event of sudden abnormality.

[0056] The UVB safety protection method utilizes pressure sensors to detect when the body is in close contact with the non-invasive UV phototherapy device, serving as a fundamental guarantee for UVB safety protection. The pressure sensor module 4 includes a first pressure sensor 4-1 and a second pressure sensor 4-2; these sensors are located on the left and right sides of the upper plane of the non-invasive UV phototherapy device 6. When the body is completely in close contact with the phototherapy plate of the non-invasive UV phototherapy device 6, the microcontroller 2-3 simultaneously collects the pressure values ​​of the first and second pressure sensors 4-1 and 4-2, ensuring they are not lower than the preset pressure threshold for phototherapy activation. Only when phototherapy activation condition 5-1 is met can the non-invasive UV phototherapy device 6 activate phototherapy, and only then will UV radiation be present. Because the phototherapy plate of the non-invasive UV phototherapy device 6 is in close contact with the user's back, it ensures that the user's eyes cannot point to the UVB light source during phototherapy, thus achieving UVB radiation safety protection.

[0057] The method for ensuring effective treatment time for users utilizes pressure sensors as a detection method for the contact-type ultraviolet non-invasive phototherapy device, serving as a basic guarantee for ensuring effective treatment time for users. The pressure sensor module 4 includes a first pressure sensor 4-1 and a second pressure sensor 4-2; the first pressure sensor 4-1 and the second pressure sensor 4-2 are distributed on the left and right sides of the upper plane of the contact-type ultraviolet non-invasive phototherapy device 6. The effective phototherapy logic 5 for users is as follows: When the human body is completely in close contact with the phototherapy plate of the contact ultraviolet non-invasive phototherapy device 6, the microcontroller 2-3 simultaneously collects the pressure values ​​of the first pressure sensor 4-1 and the second pressure sensor 4-2, which are not lower than the preset pressure threshold for phototherapy activation. Phototherapy activation condition 5-1 is met, and the contact ultraviolet non-invasive phototherapy device 6 can then activate phototherapy, and the total phototherapy duration 5-8 is reset to zero. When the pressure values ​​of the first pressure sensor 4-1 and the second pressure sensor 4-2 continuously collected by the microcontroller 2-3 in real time are not lower than the preset pressure threshold for continuous phototherapy, phototherapy maintenance condition 5-2 is met, and the contact ultraviolet non-invasive phototherapy device 6 continuously maintains phototherapy. During the treatment, when the human body leaves the light-emitting surface of the contact ultraviolet non-invasive phototherapy device 6, the pressure values ​​of the first pressure sensor 4-1 and the second pressure sensor 4-2, continuously collected in real time by the microcontroller 2-3, are lower than the preset pressure threshold for continuous phototherapy, and the remaining phototherapy time is not zero. The condition 5-3 for pausing phototherapy is met, and the contact ultraviolet non-invasive phototherapy device 6 pauses phototherapy. At this time, the total phototherapy duration 5-8 is saved and recorded, and a countdown for the return time begins. If the return time countdown is not zero, the human body returns to the phototherapy plate of the contact ultraviolet non-invasive phototherapy device 6, and the pressure values ​​of the first pressure sensor 4-1 and the second pressure sensor 4-2, continuously collected in real time by the microcontroller 2-3, are lower than the preset pressure threshold for continuous phototherapy, and the remaining phototherapy time is not zero. If the pressure value of the second pressure sensor 4-2 is not lower than the preset pressure threshold for continuous phototherapy, and the condition 5-4 for continuing phototherapy is met, the contact ultraviolet non-invasive phototherapy device 6 continues phototherapy, and the total phototherapy duration 5-8 is accumulated and recorded. If the countdown to the return time is zero, and the human body is not in close contact with the phototherapy plate of the contact ultraviolet non-invasive phototherapy device 6, the microcontroller 2-3 continuously collects the pressure values ​​of the first pressure sensor 4-1 and the second pressure sensor 4-2 in real time, which are lower than the preset pressure threshold for continuous phototherapy. If the first condition 5-5 for ending phototherapy is met, the phototherapy ends, and the total phototherapy duration 5-8 is the time when the human body leaves the phototherapy plate of the contact ultraviolet non-invasive phototherapy device 6 for the last time. The total phototherapy duration is recorded. If the total phototherapy duration 5-8 equals the preset total phototherapy duration, the second end phototherapy condition 5-6 is met, the contact ultraviolet non-invasive phototherapy device 6 completes a single phototherapy session, the phototherapy ends, and the total phototherapy duration 5-8 is the preset total phototherapy duration. If the stop phototherapy button of the contact ultraviolet non-invasive phototherapy device 6 is pressed during the phototherapy process or pause, the third end phototherapy condition 5-7 is met, the contact ultraviolet non-invasive phototherapy device 6 ends the phototherapy, and the total phototherapy duration 5-8 is the real-time recorded phototherapy duration. Through the control of the user's effective phototherapy logic 5, the effective calculation of the total phototherapy duration during the phototherapy process is ensured, so as to effectively guarantee the user's effective treatment time.

[0058] By ensuring safe temperature control, stable drive control of UVB lamp beads, safe protection against UVB radiation, and effective guarantee of treatment time for users, a safer and more stable method for promoting VD3 conversion in the human body through contact ultraviolet non-invasive phototherapy has been achieved. This method enables the contact ultraviolet non-invasive phototherapy device to emit a narrow-spectrum ultraviolet spectrum with a peak wavelength of 297nm, ensuring that phototherapy using this device is safer and more effective than medication, while avoiding the side effects associated with oral medication.

[0059] The above description only illustrates the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and all such changes should be included within the protection scope of the present invention.

Claims

1. A contact-type non-invasive ultraviolet phototherapy device for promoting the conversion of vitamin D3 in the human body, characterized in that, include: A temperature acquisition module (1) is used to acquire ambient temperature. The temperature acquisition module (1) includes an NTC thermistor (1-1) and a temperature acquisition chip (1-2). The NTC thermistor (1-1) and the temperature acquisition chip (1-2) are located adjacent to each other and are used to acquire temperature under the same ambient temperature. In the failure scenario, the data of a single unfailed temperature source is used as the actual valid data. In the non-failure scenario, temperature is compared. If the comparison data is within the required range, the temperature is normal; otherwise, a fault is reported. The failure scenario is the failure of acquisition of a single temperature source in the NTC thermistor (1-1) and the temperature acquisition chip (1-2). The non-failure scenario is that neither the NTC thermistor (1-1) nor the temperature acquisition chip (1-2) is unfailed. The microcontroller (2-3) is connected to the temperature acquisition module (1) through the power supply and data transmission interface (1-3) to supply power to the temperature acquisition module (1) and receive the temperature data transmitted by it. The UVB constant current drive module (2) is connected to the microcontroller (2-3) and is used to drive the UVB lamp beads (2-1) with constant current. It includes a constant current drive chip (2-2) and a threshold resistor (2-4). The constant current drive chip (2-2) is a multi-channel constant current drive chip. The threshold resistor (2-4) is used to set the single-channel current threshold of the constant current drive chip (2-2). The open circuit and short circuit diagnosis function of the constant current drive chip (2-2) realizes closed-loop monitoring of the drive current and dynamically adjusts the total threshold current of the UVB lamp beads (3-3) according to the fault condition. The pressure sensor module (4) includes a first pressure sensor (4-1) and a second pressure sensor (4-2). The first pressure sensor (4-1) and the second pressure sensor (4-2) are distributed on both sides of the upper plane of the contact ultraviolet non-invasive phototherapy device (6) to detect whether the human body is close to the phototherapy plate. The phototherapy is only started when the pressure value is not lower than the preset threshold to ensure that the user's eyes do not look directly at the UVB light source. The microcontroller (2-3) is also used to control the start, pause, continue and end of phototherapy according to the detection results of the pressure sensor module (4), and to record and accumulate the total phototherapy duration (5-8).

2. The contact-type non-invasive ultraviolet phototherapy device for promoting VD3 conversion in the human body according to claim 1, characterized in that: The NTC thermistor (1-1) in the temperature acquisition module (1) adopts analog signal acquisition mode, and the temperature acquisition chip (1-2) adopts I2C communication mode. The NTC thermistor (1-1) and the temperature acquisition chip (1-2) are respectively connected to the microcontroller (2-3) to realize the acquisition and transmission of temperature signals.

3. The contact-type non-invasive ultraviolet phototherapy device for promoting VD3 conversion in the human body according to claim 1, characterized in that: The constant current drive chip (2-2) in the UVB constant current drive module (2) has the function of open circuit and short circuit diagnosis of single channel drive current, and can transmit fault information to the microcontroller (2-3) through I2C communication.

4. The contact-type non-invasive ultraviolet phototherapy device for promoting the conversion of VD3 in the human body according to claim 1, characterized in that: The detection signals of the first pressure sensor (4-1) and the second pressure sensor (4-2) in the pressure sensor module (4) are both transmitted to the microcontroller (2-3). The microcontroller (2-3) determines whether the conditions for phototherapy start-up and continuous operation are met based on the preset pressure threshold.

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