Control System and Control Method for Ultraviolet Phototherapy Device Based on Distributed Sensing

Abstract

This invention discloses a control system and method for an ultraviolet phototherapy device based on distributed sensing. The system includes a light-emitting module; at least two skin-sensing modules spaced apart around the light outlet of the phototherapy device; a parameter setting module for collecting user parameter settings, including a safety control mode; and a main control unit for controlling the light emission of the light-emitting module based on the safety control mode and signals collected by the skin-sensing modules. The safety control mode includes a full control mode and a non-full control mode. In the full control mode, the light-emitting module emits light only when all skin-sensing modules detect skin contact; in the non-full control mode, the light-emitting module emits light only when a set number or proportion of skin-sensing modules detect skin contact. This invention takes into account the specific location of the patient for safe skin contact control, improving the treatment smoothness and operational stability of the phototherapy device while ensuring safety.

Description

Technical Field

[0001] This invention belongs to the field of skin treatment instrument technology, and in particular relates to a control system and control method for an ultraviolet phototherapy instrument based on distributed sensing. Background Technology

[0002] Ultraviolet (UV) phototherapy is a medical device that uses ultraviolet radiation to treat skin diseases. It works by irradiating the skin surface with specific wavelengths of ultraviolet light, stimulating the metabolic activity of skin cells and enhancing immunity, thereby achieving the therapeutic effect on skin diseases.

[0003] To improve the safety of ultraviolet phototherapy devices, patent CN219896806U discloses a phototherapy device with a safety device. This device has a contact induction coil around the light outlet. The light emission is controlled by detecting whether the light is in contact with the patient's skin, thus achieving safety control. However, this phototherapy device is only suitable for treating skin areas with high flatness. It is not suitable for areas with obvious concave-convex features, small curved areas, or areas at the edges of the skin, such as fingers, toes, cheeks, or jawlines. When the area around the light outlet cannot fully conform to the skin, but only partially, the light emission will stop or cease due to incomplete contact with the skin, frequently interrupting the treatment process or even preventing normal phototherapy.

[0004] Therefore, it is necessary to provide a new control system and control method for ultraviolet phototherapy devices based on distributed sensing to solve the above-mentioned technical problems. Summary of the Invention

[0005] The main objective of this invention is to provide a control method for an ultraviolet phototherapy device based on distributed sensing, which takes into account the special location of the patient to ensure safe skin adhesion control, thereby improving the smoothness of treatment and the stability of use of the phototherapy device while ensuring safety.

[0006] This invention achieves the above objective through the following technical solution: a control system for an ultraviolet phototherapy device based on distributed sensing, comprising:

[0007] The light-emitting module is used to emit ultraviolet light;

[0008] The number of skin sensing modules is set to P and they are distributed at intervals around the light outlet of the phototherapy device, where P is an integer and is greater than or equal to 2.

[0009] The main control unit is electrically connected to the light-emitting module and the skin sensing module. When the number of skin sensing modules with skin contact reaches a set number A, the main control unit controls the light-emitting module to emit light, where A is less than or equal to P.

[0010] Furthermore, it also includes a parameter setting module electrically connected to the main control unit, used to collect user parameter setting information, the parameter setting information including the setting of a safety control mode; the safety control mode includes a full control mode and a non-full control mode; the full control mode is when the set quantity A is equal to the number of skin sensing modules P; the non-full control mode is when the set quantity A is less than the number of skin sensing modules P;

[0011] Furthermore, the skin sensing modules are distributed around the light outlet of the phototherapy device, forming several monitoring points or monitoring areas.

[0012] Furthermore, the skin sensing module is a capacitive sensor.

[0013] Furthermore, it also includes a communication module and control software installed on the mobile terminal. The main control unit is connected to the mobile terminal via the communication module, and the control software includes the parameter setting module.

[0014] Furthermore, the parameter setting information also includes luminous intensity and illumination duration.

[0015] Another object of the present invention is to provide a control method based on the ultraviolet phototherapy device control system described above, comprising the following steps:

[0016] S101. Set the initial value of i to 1, the initial value of j to 0, and obtain the set quantity A and the number of skin sensing modules P;

[0017] S102, The sensed skin signal X collected by the i-th skin sensing module i Digitize the data, i = 1, 2, ..., P;

[0018] S103, Determine the skin-sensing signal X i If the value exceeds the set threshold, increment the skin contact count j; otherwise, proceed to the next step. The set threshold is the skin signal X collected by the skin sensing module when the skin is in contact with the skin. i The digitized value;

[0019] S104. Determine if i is less than P. If yes, increment i and return to step S102; otherwise, proceed to the next step.

[0020] S105. Determine whether the value j is greater than or equal to A. If yes, control the light-emitting module to emit light; otherwise, control the light-emitting module not to emit light.

[0021] Another object of the present invention is to provide a control method based on the ultraviolet phototherapy device control system described above, comprising the following steps:

[0022] S201. Obtain the set quantity A and the number of skin sensing modules P;

[0023] S202. Determine whether the set quantity A is equal to P. If yes, proceed to step S203; otherwise, proceed to step S207.

[0024] S203, Set the initial value of i to 1;

[0025] S204, The sensed skin signal X collected by the i-th skin sensing module i Digitize the data, i = 1, 2, ..., P;

[0026] S205. Determine the skin sensor signal X i If the value exceeds a set threshold, it indicates that there is skin contact, and step S206 is executed; otherwise, it indicates that there is no skin contact, and step S212 is executed. The set threshold is the skin signal X collected by the skin sensing module when the skin is in contact. i The digitized value;

[0027] S206. Determine if i is less than P. If yes, increment i and return to step S204; otherwise, execute step S213.

[0028] S207. Set the initial value of i to 1 and the initial value of j to 0;

[0029] S208, The sensed skin signal X collected by the i-th skin sensing module i Digitize the data, i = 1, 2, ..., P;

[0030] S209. Determine the skin sensor signal X i If the value exceeds the set threshold, then the skin contact count j++, and then step S210 is executed; otherwise, step S211 is executed.

[0031] S210. Determine if the value j is equal to A. If yes, proceed to step S213; otherwise, proceed to step S211.

[0032] S211. Determine if i is less than P. If yes, increment i and return to step S208. If not, proceed to step S212.

[0033] S212, Control the light-emitting module to not emit light;

[0034] S213, Controls the light-emitting module to emit light.

[0035] Compared with existing technologies, the beneficial effects of the ultraviolet phototherapy device control system and method based on distributed sensing of the present invention are as follows: Multiple skin sensing modules are spaced apart around the light outlet of the phototherapy device to form a distributed skin adhesion monitoring system. Based on this distributed skin adhesion monitoring system, users can set various safety control modes. When the patient's lesion area is located in a relatively flat, large area of ​​skin, a full control mode can be activated to improve safety. In this mode, the light-emitting module emits light only when all sensing modules detect skin adhesion. If the patient's lesion area is in a special location and cannot completely adhere to the area around the light outlet, a non-full control mode can be activated. In this mode, the light-emitting module emits light only when one or a set number of sensing modules detects skin adhesion, making the phototherapy device of this solution suitable for more usage scenarios. This control system takes into account the special characteristics of the patient's location and flexibly controls the light emission based on the skin adhesion state, improving the treatment smoothness, stability, and flexibility of the phototherapy device while ensuring safety. Attached Figure Description

[0036] Figure 1 This is a system structure block diagram according to an embodiment of the present invention;

[0037] Figure 2-4 This is a schematic diagram of the multiple distribution structures of the skin sensing module in an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the control flow of the main control unit in Embodiment 1 of the present invention;

[0039] Figure 6 This is a schematic diagram of the control flow of the main control unit in Embodiment 2 of the present invention;

[0040] The numbers in the diagram represent:

[0041] 100 - Control system for ultraviolet phototherapy device based on distributed sensing; 200 - Light outlet of phototherapy device;

[0042] 1-Main control unit; 2-Light emission module; 3-Skin sensing module; 4-Parameter setting module; 5-Communication module. Detailed Implementation

[0043] Example 1:

[0044] Please refer to Figures 1-4 This embodiment is a distributed sensing-based ultraviolet phototherapy device control system 100, which includes a main control unit 1, a light-emitting module 2 electrically connected to the main control unit 1, at least two skin sensing modules 3, and a parameter setting module 4; the skin sensing modules 3 are arranged at intervals around the light outlet 200 of the phototherapy device, and the number of them is two or more.

[0045] The skin sensing modules 3 are distributed around the light outlet 200 of the phototherapy device. The skin sensing modules 3 can be distributed in a point-like manner or in several independent blocks to form several monitoring points or monitoring areas to monitor whether each monitoring position of the light outlet 200 of the phototherapy device is in contact with the skin.

[0046] The skin sensing module 3 is a capacitive sensor. When the user places the light outlet of the phototherapy device against the skin, the capacitance of the skin sensing module 3 will change, thereby sensing the skin contact.

[0047] The parameter setting module 4 is used to collect the user's parameter setting information, which includes luminous intensity, illumination duration, and safety control mode.

[0048] The main control unit 1 controls the light-emitting module 2 to emit light based on the parameter setting information and the skin adhesion information collected by the skin sensing module 3.

[0049] The security control modes include the following two:

[0050] (1) Full control mode: In this mode, the light-emitting module 2 will emit light only when all skin sensing modules 3 detect skin contact;

[0051] (2) Non-full control mode: In this mode, the light-emitting module 2 will emit light when the number or proportion of skin sensing modules 3 with skin contact is reached.

[0052] The parameter setting module 4 can be directly integrated into the ultraviolet phototherapy device control system or installed in the control software of a mobile terminal. If installed in the control software of the mobile terminal, the ultraviolet phototherapy device control system 100 based on distributed sensing also includes a communication module 5, which communicates with the mobile terminal. The user can set the parameter setting information in the control software installed on the mobile terminal, and then transmit it to the main control unit 1 through the communication module 5. If the user sets a non-full control mode, the number A of skin sensing modules 3 required to detect skin contact can also be set, where A is less than or equal to the total number P of skin sensing modules 3.

[0053] This embodiment also provides a control method for a distributed sensing-based ultraviolet phototherapy device control system, which includes controlling the light emission module 2 according to the safety control mode and the acquisition signals of a plurality of skin sensing modules 3.

[0054] For details, please refer to Figure 5 The control method includes the following steps:

[0055] S101. Set the initial value of i to 1, the initial value of j to 0, and obtain the set quantity A and the number of skin sensing modules P;

[0056] S102, The sensed skin signal X collected by the i-th skin sensing module 3 i Digitalization is performed, i=1,2,...P, where P is the number of skin sensing modules 3, and P is greater than or equal to 2;

[0057] S103, Determine the skin-sensing signal X i If the value exceeds the set threshold, increment the skin contact count j; otherwise, proceed to the next step.

[0058] S104. Determine if i is less than P. If yes, increment i and return to step S102; otherwise, proceed to the next step.

[0059] S105. Determine whether the value j is greater than or equal to A. If yes, the main control unit 1 controls the light-emitting module 2 to emit light; otherwise, the light-emitting module 2 does not emit light.

[0060] Example 2:

[0061] Please refer to Figure 6 The structural principle of this embodiment is basically the same as that in Embodiment 1, the difference being that the control method includes the following steps:

[0062] S201. Obtain the set quantity A and the number of skin sensing modules P;

[0063] S202. Determine whether the set quantity A is equal to P. If yes, proceed to step S203; otherwise, proceed to step S207.

[0064] S203, Set the initial value of i to 1;

[0065] S204, The sensed skin signal X collected by the i-th skin sensing module 3 i Digitalization is performed, i=1,2,...P, where P is the number of skin sensing modules 3, and P is greater than or equal to 2;

[0066] S205. Determine the skin sensor signal X i If the value exceeds the set threshold, it indicates that there is skin contact, and step S206 is executed; otherwise, it indicates that there is no skin contact, and step S212 is executed. The set threshold is the skin-sensing signal X collected by the skin sensing module 3 when the skin is in contact. i The digitized value;

[0067] S206. Determine if i is less than P. If yes, increment i and return to step S204; otherwise, execute step S213.

[0068] S207. Set the initial value of i to 1 and the initial value of j to 0;

[0069] S208, The sensed skin signal X collected by the i-th skin sensing module 3 i Digitalization is performed, i=1,2,...P, where P is the number of skin sensing modules 3, and P is greater than or equal to 2;

[0070] S209. Determine the skin sensor signal X i If the value exceeds the set threshold, then the skin contact count j++, and then step S210 is executed; otherwise, step S211 is executed.

[0071] S210. Determine if the value j is equal to A. If yes, proceed to step S213; otherwise, proceed to step S211.

[0072] S211. Determine if i is less than P. If yes, increment i and return to step S208. If not, proceed to step S212.

[0073] S212, Control the light-emitting module 2 to not emit light;

[0074] S213, control the light output of the light-emitting module 2.

[0075] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this invention, and these all fall within the protection scope of this invention.

Claims

1. A control system for an ultraviolet phototherapy device based on distributed sensing, characterized in that: It includes The light-emitting module is used to emit ultraviolet light; The skin sensing modules are configured in a quantity of P and are distributed at intervals around the light outlet of the phototherapy device, where P is an integer greater than or equal to 2; the skin sensing modules are distributed around the light outlet of the phototherapy device to form several monitoring points or monitoring areas; the skin sensing modules are capacitive sensors; The main control unit is electrically connected to the light-emitting module and the skin sensing module; when the number of skin sensing modules with skin contact reaches a set number A, the main control unit controls the light-emitting module to emit light, where A is less than or equal to P; The parameter setting module, electrically connected to the main control unit, is used to collect user parameter setting information, including the setting of a safety control mode; the safety control mode includes a full control mode and a non-full control mode; the full control mode is when the set quantity A is equal to the number of skin sensing modules P; the non-full control mode is when the set quantity A is less than the number of skin sensing modules P. The control method implemented by the ultraviolet phototherapy device control system includes method one or method two; The first method includes the following steps: S101. Set the initial value of i to 1, the initial value of j to 0, and obtain the set quantity A and the number of skin sensing modules P; S102, The sensed skin signal X collected by the i-th skin sensing module i Digitize the data, i = 1, 2, ..., P; S103, Determine the skin-sensing signal X i If the value exceeds the set threshold, increment the skin contact count j; otherwise, proceed to the next step. The set threshold is the skin signal X collected by the skin sensing module when the skin is in contact with the skin. i The digitized value; S104. Determine if i is less than P. If yes, increment i and return to step S102; otherwise, proceed to the next step. S105. Determine whether the value j is greater than or equal to A. If yes, control the light-emitting module to emit light; otherwise, control the light-emitting module not to emit light. The second method includes the following steps: S201. Obtain the set quantity A and the number of skin sensing modules P; S202. Determine whether the set quantity A is equal to P. If yes, proceed to step S203; otherwise, proceed to step S207. S203, Set the initial value of i to 1; S204, The sensed skin signal X collected by the i-th skin sensing module i Digitize the data, i = 1, 2, ..., P; S205. Determine the skin sensor signal X i If the value exceeds a set threshold, proceed to step S206; otherwise, proceed to step S212. The set threshold is the skin signal X collected by the skin sensing module when the skin is in contact with the skin. i The digitized value; S206. Determine if i is less than P. If yes, increment i and return to step S204; otherwise, execute step S213. S207. Set the initial value of i to 1 and the initial value of j to 0; S208, The sensed skin signal X collected by the i-th skin sensing module i Digitize the data, i = 1, 2, ..., P; S209. Determine the skin sensor signal X i If the value exceeds the set threshold, the skin contact count j++ and step S210 is executed; otherwise, step S211 is executed. S210. Determine if the value j is equal to A. If yes, proceed to step S213; otherwise, proceed to step S211. S211. Determine if i is less than P. If yes, increment i and return to step S208. If not, proceed to step S212. S212, Control the light-emitting module to not emit light; S213, Controls the light-emitting module to emit light.

2. The ultraviolet phototherapy device control system based on distributed sensing as described in claim 1, characterized in that: It also includes a communication module and control software installed on the mobile terminal. The main control unit is connected to the mobile terminal via the communication module, and the control software includes the parameter setting module.

3. The ultraviolet phototherapy device control system based on distributed sensing as described in claim 1 or 2, characterized in that: The parameter settings also include luminous intensity and illumination duration.

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