A skin phototherapy system with precise positioning of illumination area shape

Abstract

This invention discloses a skin phototherapy system with precise positioning of the illuminated area shape, comprising: a lesion skin image recognition module, an LED light source emission control module, and an LED light source heat dissipation module; the lesion skin image recognition module includes a camera and a lesion skin image analysis module; the LED light source emission control module includes a soft light pad, a fixing plate, an optical fiber, a light source board, an LED light source, an IC circuit control module, and a movable support; the LED light source heat dissipation module includes a water cooler, cooling water pipes, and a cooling water tank. This invention can precisely locate and illuminate lesion skin areas, using LED light sources instead of traditional fluorescent tubes, resulting in more precise wavelengths and more stable illumination. The LED light source heat dissipation module ensures the light source operates at the most suitable temperature, reducing unnecessary damage to normal skin and improving the efficiency of lesion skin identification and treatment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of phototherapy equipment, and particularly relates to a skin phototherapy system with accurate positioning of a light irradiation area shape. BACKGROUND

[0002] Phototherapy is a physical therapy method for treating diseases by using the radiant energy of light. Phototherapy mainly includes ultraviolet therapy, visible light therapy, infrared therapy and laser therapy. At present, global phototherapy equipment for vitiligo and psoriasis adopts a polygonal structure with an inner diameter of 80 cm or 100 cm. The light source is a specific wavelength fluorescent tube (ultraviolet lamp tube).

[0003] Since the emitted specific light wavelength only acts on the lesion site, the normal skin will be damaged. Therefore, in actual use, in order to avoid the damage of the ultraviolet light to the benign skin of the patient, the patient is required to wear a specific clothes, the clothes are manually cut according to the actual lesion area by using a scissors, the lesion skin is exposed for phototherapy, and the normal skin is covered by the clothes. This operation method has the following difficulties: it is difficult for a person to accurately cut the actual lesion area; a doctor or a nurse needs to spend more energy and time to align the clothes with the lesion area, which affects the speed and efficiency of diagnosis and treatment; with the deepening of treatment, the clothes need to be cut and the lesion area needs to be repositioned every few times.

[0004] There are many disclosed technologies in the prior art for light illumination area and / or shape, such as CN201511016003.5 discloses a light source device for an instrument for relieving diabetic fundus lesions, which effectively determines the shape of the light illumination area by setting different shapes of the light absorption layer, and achieves the purpose of uniform light through the action of the light guide plate. CN201821670609.X relates to an image reading device and its illumination aiming structure, the condenser lens can control the concentration of light, and after the light is condensed, it can be shot from the diaphragm to control the size and shape of the light illumination area on the image plane to be identified, so as to form an illumination area on the image plane to be identified, so that the illumination area just covers the range required for decoding. CN202010770469.9 relates to an intelligent flexible regulation light source method and system, which includes three parts: a big data image acquisition module, an intelligent learning and regulation module, and a high-density dot matrix light source and a flexible substrate direction driving module. The big data image acquisition module: the vision system acquires high-speed large data of the image; the intelligent learning and regulation module: the vision system's big data image is autonomously learned and judged, digitized, and intelligently regulated to drive the high-density dot matrix light source driving module; the high-density dot matrix light source and the flexible substrate direction driving module: execute the decision of the intelligent learning and regulation module, drive the area light intensity and the direction of the flexible substrate intelligently and quickly, and realize the consistency of the surface brightness of the measured object. It solves the problem of uneven light caused by light environment, object surface shape, and object surface reflection, and further provides an important guarantee for high-quality image acquisition work.

[0005] There are many existing technologies for image edge discrimination or region discrimination, such as CN112132846A, which describes an image segmentation method and apparatus based on edge pixel discrimination. This method involves image enhancement and denoising of the original target image; initial localization of edge pixel regions in the image based on a pixel-level edge detection algorithm; extraction of edge pixel regions and interpolation using a parametric interpolation method; determination of pixel categories based on the interpolated edge pixel regions using a neural network; and using edge pixels of the same category as image segmentation lines. By utilizing an edge detection algorithm for initial localization of image edges and classifying image pixels after edge region interpolation, sub-pixel-level edge pixel detection is achieved, thereby enabling more accurate image segmentation. CN114241261A is a skin disease identification method based on image processing. The method involves: preprocessing a skin image to obtain a target image; using a pre-trained image recognition model to identify the target image and obtain the probability of each skin disease category; using the image recognition model to identify the target image and obtain the probability of each skin location corresponding to a skin disease location; filtering the skin locations based on their probabilities to obtain the target skin disease location; sorting the skin disease categories based on their probabilities to generate a candidate skin disease category sequence; and filtering the candidate skin disease category sequence based on the target skin disease location to obtain the target skin disease category.

[0006] However, current whole-body or large-area phototherapy devices have not fully adopted LED light sources. The main reason is that the cylindrical structure cannot effectively dissipate the heat generated by the LED while ensuring sufficient light intensity. Existing skin phototherapy devices cannot precisely position the shape of the illumination area, and the heat dissipation problem remains unresolved. This affects the LED light characteristics, causing wavelength drift, reduced light efficiency, and shortened light source lifespan, thus impacting the treatment effect. Summary of the Invention

[0007] To address the problems of insufficient light intensity, inaccurate positioning of the illuminated area, poor heat dissipation, immobile illuminated surface, and inability to fully conform to the lesion area when using LED light sources in large-area whole-body phototherapy devices, this invention provides a skin phototherapy system with precise positioning of the illuminated area, achieved through the following solution:

[0008] A skin phototherapy system with precise positioning of the illuminated area shape includes: a diseased skin image recognition module, an LED light source emission control module, and an LED light source heat dissipation module.

[0009] Further, the lesion skin image recognition module collects lesion skin image information, and sends the lesion skin information to the LED light source light control module, and the corresponding region of the LED light source is turned on for treatment. The heat generated by the LED light source during operation is processed by the LED light source heat dissipation module.

[0010] Further, the lesion skin image recognition module includes a camera and a lesion skin image analysis module. The camera captures the lesion skin image information, and transmits the lesion skin image information to the lesion skin image analysis module. The lesion skin image analysis module divides the lesion skin image information into pixel points, pre-stores standard case lesion skin image information, identifies and analyzes the lesion skin image information, and sends the lesion skin image information to the LED light source light control module.

[0011] Further, the lesion skin image analysis module compares the captured lesion skin pixel points with normal skin standard pixel points, determines the boundary between the lesion skin region and the normal skin, compares the lesion skin region pixels with the pre-stored standard case lesion skin pixels, determines the severity of each pixel point of the lesion skin, and the different skin disease categories have corresponding pre-stored standard case lesion skin image information in the lesion skin image analysis module. The light intensity of the LED light source has 8 levels from the lowest 000 to the highest 111. The treatment level required by the lesion skin of different severity corresponds to the 8 levels of light intensity of the LED light source. After comparing and identifying the pre-stored standard case lesion skin image information, the image information of the corresponding region of the lesion skin is divided into pixel points with the same size as a single LED light source in proportion, and the generated lesion skin image information is a group of dot matrix data. The dot matrix data is sent to the LED light source light control module.

[0012] Further, the LED light source light control module includes an IC circuit control module, a soft light pad, a fixed plate, a light source plate, an optical fiber, an LED light source, and a moving support. The IC circuit control module controls each LED light source individually. The LED light sources are fixed on the light source plate in the order of the IC circuit control module. The front of the light source plate is provided with a fixed plate. The front of the fixed plate is provided with a soft light pad for adhering to the surface of the lesion skin. The moving support is also provided below the fixed plate. The moving support drives the soft light pad to move to the vicinity of the lesion skin for positioning. The soft light pad and the fixed plate are connected by a plastic hose. After the LED light source emits light, the light is coupled to the optical fiber through the optical fiber connector. The optical fiber passes through the round hole on the fixed plate and is installed on the soft light pad in the order determined by the IC circuit control module. After the LED light source emits light, multiple optical fibers emit light to form a light guide beam. The pattern area formed on the soft light pad by the light guide beam is the lesion area of the soft light pad.

[0013] Further, the IC circuit control module controls the LED light source to emit light or not to emit light, the LED light source is combined to form different shapes by a plurality of IC circuit control modules, the light intensity of the LED light source is realized by adjusting the current size of a single LED light source, the IC circuit control module is controlled according to the dot matrix data, the IC circuit control module has 16 pin outputs, one pin output corresponds to one LED light source, the number of IC circuit control modules is stacked according to the use range of the diseased skin, the IC circuit control module controls the LE and OE two pins to realize the individual control of the LED light source; the different light intensities of the LED light source 11 are realized by adjusting the current size of a single LED light source 11, and are realized by the IC circuit control module; binary "000" represents that one LED light source 11 is turned off; binary "111" represents the highest light intensity of the LED, and the data between 000 and 111 given by the IC circuit control module represents different brightness of the LED light source; the light intensity of the LED light source is sequentially increased from low to high by the IC circuit control module, so that the required light intensity of the central region of the diseased skin is higher than that of the edge.

[0014] Further, the LED light source heat dissipation module comprises a cooling water tank for storing cooling water, a water cooler and a cooling water pipe; the cooling water tank is attached to the back side of the light source plate, and the cooling water tank, the water cooler and the cooling water pipe form a cooling water circulation channel; the LED light source light emission control module is connected with the water cooler and the diseased skin image recognition module at the same time, and the water cooler is sent a cooling and stopping instruction by the LED light source light emission control module.

[0015] Further, when the heat generated by the LED light source in the LED light source light emission control module exceeds a threshold value, the corresponding LED light source is turned off, the LED light source heat dissipation module is started to cool the LED light source to below the threshold value, when the temperature of the LED light source is lower than the threshold value, the corresponding LED light source is restarted by the LED light source light emission control module, and the LED light source is continuously controlled by the LED light source light emission control module to start the treatment of the diseased skin area.

[0016] The present application has the following advantages: the diseased skin image recognition module accurately locates the diseased skin range of the skin patient, the severity of the diseased skin and provides corresponding information to the LED light source light emission control module, so that accurate light treatment is realized, the LED light source heat dissipation module ensures the stable performance of the light source of the LED light source light emission control module, and wavelength drift, low light efficiency and short light source life do not occur, and the problems of inaccurate treatment range and unsatisfactory treatment effect of the existing light treatment equipment on the diseased skin of the patient are solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present application;

[0018] Figure 2 This is a schematic diagram of the soft light pad of the LED light source emission control module of the present invention;

[0019] Figure 3 This is a schematic diagram of the IC circuit control module of the present invention;

[0020] Figure 4 This is a schematic diagram of the luminescence emitted by the soft light pad in the lesion area according to the present invention;

[0021] Figure 5 This is a flowchart of the process of the present invention;

[0022] In the diagram: 1. Lesion skin image recognition module; 2. LED light source emission control module; 3. LED light source heat dissipation module; 4. Camera; 5. Lesion skin image analysis module; 6. IC circuit control module; 7. Soft light pad; 8. Fixing plate; 9. Light source board; 10. Optical fiber; 11. LED light source; 12. Movable bracket; 13. Cooling water tank; 14. Cooling water pipe; 15. Cooler; 16. Soft light pad lesion area. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] This invention discloses a skin phototherapy system with precise positioning of the illuminated area shape, such as... Figure 1 As shown, it includes a diseased skin image recognition module 1, an LED light source emission control module 2, and an LED light source heat dissipation module 3.

[0025] The lesion skin image recognition module 1 includes a camera 4 and a lesion skin image analysis module 5. After the camera 4 captures the patient's skin image information, it is transmitted to the lesion skin image analysis module 5 for analysis, recognition, and comparison. The lesion skin image analysis module 5 has a database of case lesion skin image information stored in advance. It determines whether the skin is lesion. If it is not lesion, it is compared with the database again until all lesions are identified. If it is lesion, the coordinate position of the lesion is generated as processed dot matrix information. The severity information of the lesion is compared with the database. The resulting severity level information and precise location information of the lesion are sent to the LED light source emission control module 2.

[0026] Further, the LED light source light-emitting control module 2 comprises an IC circuit control module (6), a soft light pad 7, a fixed plate 8, a light source plate 9, an optical fiber 10, an LED light source 11 and a moving support 12; a plurality of LED light source groups are arranged equidistantly on the light source plate 9, the fixed plate 8 is arranged in front of the light source plate 9, the optical fiber 10 is arranged between the light source plate 9 and the fixed plate 8, and the optical fiber 10 is used for butting the LED light source 11 to the light source plate 9; the soft light pad 7 used for adhering to the surface of the diseased skin is arranged in front of the fixed plate 8, and the soft light pad 7 and the fixed plate 8 are connected through a plastic hose; the LED light source light-emitting control module 2 controls each LED light source 11 individually, the controlled single LED light source 11 emits light, the light is coupled to the optical fiber 10 through an optical fiber joint, and the optical fiber 10 is a channel for a bendable light beam; the middle part of the fixed plate 8 is provided with a channel opening of the optical fiber 10, the optical fiber 10 passes through the fixed plate 8 through the channel opening and is sequentially installed on the soft light pad 7 according to the order of the IC circuit control module 6, and a plurality of light beams are formed by the light emitted by the plurality of optical fibers 10 after the plurality of LED light sources 11 emit light, and the pattern area formed by the light beams on the soft light pad 7 is the lesion area 16 of the soft light pad.

[0027] The moving support 12 is further arranged below the fixed plate 8, and the soft light pad 7 is controlled to move to the vicinity of the diseased skin to be treated by the moving support 12 to complete positioning.

[0028] Further, if the heat generated by the LED light source 11 in the LED light source light-emitting control module 2 exceeds a specified threshold value, the corresponding LED light source 11 is turned off, and the LED light source cooling module 3 is started to cool the LED light source; when the temperature of the LED light source is lower than the threshold value, the LED light source light-emitting control module 2 is restarted to continue treatment.

[0029] The LED light source cooling module 3 comprises a cooling water tank 13 used for storing cooling water, a water cooler 15 and a cooling water pipe 14, and the cooling water tank 13, the water cooler 15 and the cooling water pipe 14 form a cooling water circulation channel; the LED light source light-emitting control module 2 is connected with the water cooler 15 and the diseased skin image recognition module 1 simultaneously, and sends the cooling and stopping instructions to the water cooler 15 through the LED light source light-emitting control module 2.

[0030] During operation, the patient with diseased skin stands at a pre-set photographing position, exposes the skin in the diseased area, the camera 4 captures the image information of the diseased skin, and sends the collected skin information to the diseased skin image analysis module 5; the diseased skin image analysis module 5 is located at the front end of the LED light source light-emitting control module 2, determines the preliminary range of the diseased skin according to the color difference and the boundary between the dark and light colors of the skin based on the received skin information of the patient.

[0031] The preliminarily determined lesion skin image information is compared with the database formed by the pre-stored case lesion image information in the lesion skin image analysis module 5, and is distinguished as lesion skin or normal skin. After a certain area of the skin is taken, the picture of the corresponding area is divided into the same size pixel array as the LED light source 11 in proportion; the taken pixel is compared with the normal skin pixel mark, and the lesion skin area range is marked, and then the pixel of the lesion skin area is compared with the pixel in the database to determine the severity of different pixels. At this time, the pixel array formed by the LED light source 11 and the pixel of the skin area are one-to-one corresponding.

[0032] As shown in Figure 2 , 3 , the lesion skin image analysis module 5 accurately determines the size and severity of the lesion skin area, and compares and identifies the existing lesion skin picture in the database, and then transmits the data to the LED light source light control module 2. The image information of the corresponding area of the lesion skin will be divided into the same size pixel array as the LED light source in proportion. At this time, the LED light beam and the skin area to be treated are one-to-one corresponding. In the 10x10 dot array, the LED light source 11 of the LED light source light control module 2 is controlled by the IC circuit module. Each IC circuit control module has 16 pin outputs, one-to-one corresponding to 16 LED light sources 11. The number of IC circuit control modules can also be stacked with the number of LEDs, and the number of LED light sources needs to be matched with the number of dot arrays. Each IC circuit control module realizes individual control through LE and OE two pins, and controls the LED light source 11 to emit light or not emit light through the different dot array data transmitted by the lesion skin image analysis module 5. Each LED light source 11 is individually controlled, and multiple ICs are combined to control the LED light source 11 to form a shape consistent with the boundary range of the patient's lesion skin. Different light intensities of the LED light source 11 are realized by adjusting the current size of the single LED light source 11, which is realized by the IC circuit control module 6. Binary "000" represents that a LED light source 11 is turned off; binary "111" represents the highest light intensity of the LED; the data between 000 and 111 given by the IC circuit control module 6 represents different brightness of the LED light source 11. The IC circuit control module increases the light intensity of the LED light source 11 from low to high in turn, to ensure that the light intensity required by the center area of the lesion skin is higher than that of the edge.

[0033] Further, when the LED light source light emission control module 2 receives the lesion skin information sent by the lesion skin image analysis module 5, first compare the captured pixel points with the normal skin pixel points, mark the lesion skin area, and then compare the pixel points of the lesion skin area with the pre-stored disease pixel points to determine the severity of different pixel points. The illumination intensity of the LED light source has 8 levels from 000 to 111, and the treatment level required by the lesion skin of different severity also has 8 levels, which matches the corresponding illumination intensity. Different skin disease categories have corresponding pre-stored standard case lesion skin image information in the image analysis and recognition module. The severity of the patient's lesion skin and the level of the corresponding illumination intensity of the LED light source are one-to-one corresponding. Different skin disease categories and different severity of lesion skin have different comparison picture information pre-stored in the lesion skin image recognition module. According to the pre-stored lesion image information, the LED light source 11 is lit according to the severity and lesion range of different lesion skin corresponding to the pixel points of the lesion skin image.

[0034] Figure 3 As shown, each LED light source 11 can be individually controlled by the IC circuit control module 6. After the controlled single LED light source 11 emits light, the light is coupled to the optical fiber 10 through the optical fiber joint. The diameter of each optical fiber is 2 mm. The optical fiber 10 becomes a bendable light beam channel. 1000 optical fibers 10 are installed on the soft light pad 1 in the order of the IC circuit control module through the fixing plate 8. The LED light source light emission control module 2 sends a signal to each LED light source 11, Figure 4 As shown, the pattern area formed by the light guide light beam on the soft light pad 7 is the soft light pad lesion area 16. The intensity of the light emitted by the LED light source 11 corresponds to the severity of the treatment of the lesion skin. In the soft light pad lesion area 16, when the skin area determined by the lesion skin image recognition module 1 is normal skin, the information sent by the IC circuit control module 6 is to close the corresponding LED light source 11 of the normal skin area. When the information sent by the IC circuit control module 6 is 111, the pixel area corresponding to the lesion skin needs the maximum illumination intensity. The illumination intensity of the LED light source 11 is increased to the highest level.

[0035] The corresponding area of the LED light source 11 is lit to form a light-emitting area with the same pattern as the lesion. According to the positioning of the visual system, the LED light source light emission control module 2 controls the movement support 12 and the soft light pad 7 to move around the lesion skin. The optical fiber 10 on the soft light pad 7 accurately performs phototherapy on the lesion skin area according to the pre-set time, achieving the purpose of treatment.

[0036] Figure 5As shown, the LED light source light-emitting control module 2 is connected with the water cooler 15 and the lesion skin image recognition module 5, a large amount of heat is generated during the working process of the LED light source 11, and the heat is treated by the LED light source heat dissipation module 3, the LED light source heat dissipation module 3 is connected with the light source plate 9 of the LED light source light-emitting module 2, the cooling water is cooled by the water cooler 15, then reaches the cooling water tank 13 at the back of the LED light source 11 through the cooling water pipe 14, and the cooling water circulates in the LED light source heat dissipation module 3 to take away the heat. When the temperature of the LED light source 11 exceeds the set threshold 65 DEG C, the LED light source light-emitting control module 2 sends an instruction to the water cooler to start cooling, and when it does not exceed, the LED light source light-emitting control module 2 does not issue an instruction.

[0037] The present application relies on the lesion skin image recognition module to accurately locate the lesion skin range of the skin patient, the severity of the lesion skin and provide corresponding information to the LED light source light-emitting control module, and accurately light treatment is carried out, the LED light source heat dissipation module ensures that the light source performance of the LED light source light-emitting control module is stable, and wavelength drift, light efficiency reduction, light source life shortening and the like do not occur, and the problems that the treatment range of the lesion skin of the patient is not accurate and the treatment effect is not ideal in the prior light treatment equipment are solved.

[0038] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A skin phototherapy system with precise positioning of the shape of the illuminated area, characterized in that: The application relates to a skin disease treatment device, which comprises a lesion skin image recognition module (1), an LED light source light-emitting control module (2) and an LED light source heat dissipation module (3); the lesion skin image recognition module (1) collects lesion skin image information, sends the lesion skin information to the LED light source light-emitting control module (2), and lights up the LED light source (11) in the corresponding area for treatment; the heat generated by the LED light source (11) during operation is treated by the LED light source heat dissipation module (3); The lesion skin image recognition module (1) comprises a camera (4) and a lesion skin image analysis module (5); the camera (4) shoots lesion skin image information and transmits the lesion skin image information to the lesion skin image analysis module (5); the lesion skin image analysis module (5) prestores standard case lesion skin image information, identifies and analyzes the lesion skin image information, and sends the analyzed lesion skin image information to the LED light source light-emitting control module (2); After the camera (4) shoots a certain area of skin, the lesion skin image analysis module (5) divides the picture of the corresponding area into pixel dot arrays of the same size as the LED light source (11) in a same proportion, then compares the segmented lesion skin pixel dots with normal skin standard pixel dots, determines and labels the boundary between the lesion skin area and the normal skin, and then compares the pixel dots of the lesion skin area with the prestored standard case lesion skin pixel dots to determine the severity of each pixel dot of the lesion skin; the pixel dot arrays formed by the LED light source (11) and the pixel dot arrays segmented from the skin area are one-to-one corresponding. Different skin diseases have corresponding prestored standard case lesion skin image information in the lesion skin image analysis module (5); the light intensity of the LED light source (11) ranges from the lowest 000 to the highest 111, and there are totally 8 stages; the treatment level required by the lesion skin with different severities corresponds to the 8-stage light intensity of the LED light source (11); after the prestored standard case lesion skin image information is compared and identified, the image information of the corresponding area of the lesion skin is divided into pixel dot arrays of the same size as the single LED light source (11) in a same proportion, the lesion skin image information is generated as a group of dot array data, and the dot array data is sent to the LED light source light-emitting control module (2).

2. Phototherapy system with precise positioning of the shape of the illuminated area according to claim 1, characterized in that: The LED light source light control module (2) comprises an IC circuit control module (6), a soft light pad (7), a fixing plate (8), a light source plate (9), an optical fiber (10), an LED light source (11), and a moving support (12); the IC circuit control module (6) controls each LED light source (11) individually, the LED light source (11) is fixed on the light source plate (9) in the order of the IC circuit control module (6), the front of the light source plate (9) is provided with the fixing plate (8), the front of the fixing plate (8) is provided with the soft light pad (7) for adhering to the surface of the diseased skin, the fixing plate (8) is further provided below with the moving support (12), the moving support (12) drives the soft light pad (7) to move to the vicinity of the diseased skin for positioning; the soft light pad (7) and the fixing plate (8) are connected through a plastic hose, the LED light source (11) emits light and couples the light to the optical fiber (10) through an optical fiber joint, the optical fiber (10) passes through a round hole on the fixing plate (8) and is installed on the soft light pad (7) in the order determined by the IC circuit control module (6), the LED light source (11) emits light and drives multiple optical fibers (10) to emit light to form a light guide beam, and a pattern area formed on the soft light pad (7) by the light guide beam is a soft light pad lesion area (16).

3. Phototherapy system with precise positioning of the shape of the illuminated area according to claim 1, characterized in that: The IC circuit control module (6) controls the LED light source (11) to emit light or not to emit light, the LED light source (11) is controlled by multiple IC circuit control modules (6) to form different shapes, the light intensity of the LED light source (11) is realized by adjusting the current size of a single LED light source (11), the IC circuit control module (6) is controlled according to dot matrix data, the IC circuit control module (6) has 16 pin outputs, one pin output corresponds to one LED light source (11), the number of the IC circuit control module (6) is superimposed according to the size of the lesion area of the diseased skin, the IC circuit control module (6) controls the LE, OE two pins to realize the individual control of the LED light source (11); different light intensities of the LED light source (11) are realized by adjusting the current size of a single LED light source (11), which is realized by the IC circuit control module (6), binary "000" represents that one LED light source (11) is turned off; binary "111" represents the highest light intensity of the LED, the data between 000-111 given by the IC circuit control module (6) represents different brightness of the LED light source (11), the IC circuit control module (6) sequentially increases the light intensity of the LED light source (11) from low to high, and ensures that the light intensity required by the central area of the diseased skin is higher than that of the edge.

4. Phototherapy system with precise positioning of the shape of the illuminated area according to claim 1, characterized in that: The LED light source heat dissipation module (3) comprises a cooling water tank (13) for storing cooling water, a water cooler (15) and a cooling water pipe (14); the cooling water tank (13) is attached to the back side of the light source board (9), and the cooling water tank (13), the water cooler (15) and the cooling water pipe (14) form a cooling water circulation channel; the LED light source light emitting control module (2) is connected with the water cooler (15) and the lesion skin image recognition module (1) at the same time, and the water cooler (15) is sent an opening cooling instruction or a stopping cooling instruction by the LED light source light emitting control module (2).

5. Phototherapy system with precise positioning of the shape of the illuminated area according to claim 1, characterized in that: If the heat generated by the LED light source (11) in the LED light source light emitting control module (2) exceeds a threshold value, the corresponding LED light source (11) is turned off, the LED light source heat dissipation module (3) is started to cool the LED light source (11) to below the threshold value, and when the temperature of the LED light source (11) is lower than the threshold value, the corresponding LED light source (11) is restarted by the LED light source light emitting control module (2), and the LED light source (11) is continued to be controlled by the LED light source light emitting control module (2) to start the treatment of the lesion skin area.

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