An ambient-driven ultraviolet dose monitoring device for phototherapy and / or post-operative skin management

Abstract

The application discloses an environment-driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin management. The device is started in an environment-responsive manner by triggering power supply by local temperature and humidity of the human body through an environment-driven module, thereby avoiding the problem of continuous autonomous discharge of a conventional self-powered battery after preparation is completed or the battery is exposed to the environment, reducing invalid energy loss, and being beneficial to prolonging the effective working life of the power supply module. Meanwhile, the device is free from dependence on a conventional battery, so that the flexible detection device has the characteristics of light weight, flexibility and low maintenance.

Description

Technical Field

[0001] This invention belongs to the field of intelligent wearable device technology, specifically relating to an environment-driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin management. Background Technology

[0002] In recent years, with the development of dermatology and precision rehabilitation management, the control of ultraviolet (UV) dose during phototherapy and postoperative rehabilitation has received increasing attention. In clinical dermatology, UV phototherapy is widely used to treat diseases such as vitiligo and psoriasis. Furthermore, during the rehabilitation process after laser therapy, chemical peels, and cosmetic procedures, patients' skin is typically in a highly photosensitized state, requiring stricter control of UV exposure. Insufficient UV irradiation may affect treatment efficacy, while excessive irradiation can lead to erythema, pigmentation, skin barrier damage, and even increase the risk of long-term photodamage. Therefore, real-time, continuous, and individualized monitoring of the actual UV irradiation dose on the skin surface is of great significance.

[0003] Existing ultraviolet (UV) detection equipment has many limitations, and traditional portable UV detectors mostly rely on external power supplies. For example, utility model CN207963947U discloses a wearable device for microenvironment monitoring, including a control board, MP3 player, UV sensor, temperature and humidity sensor, wireless connection device, display screen, power supply battery, battery booster charging board, and two switches. This utility model uses battery power, which not only increases the size and weight of the device but also requires regular battery replacement, making it inconvenient to use and not environmentally friendly.

[0004] For example, patent application CN105277279A discloses a wearable ultraviolet monitoring device and its processing method based on an ARM chip. The device includes an ARM chip, whose power supply terminal is connected to a solar power module, and whose input terminal is connected to an ultraviolet sensor to measure the current ambient ultraviolet index (UV). This patent application utilizes solar power, making it highly susceptible to the influence of sunlight.

[0005] Furthermore, some wearable UV detection devices have limited functionality and are inadequate in data processing, storage, and user interaction, failing to meet people's personalized needs for UV protection in different environments.

[0006] Furthermore, very few existing ultraviolet monitoring devices can utilize human body temperature for activation. Most devices require manual activation or rely on external power, significantly limiting their usability. Body temperature, as a stable and continuous source of energy, would offer immense convenience if effectively utilized to activate monitoring devices. However, research in this area is still in its early stages and has significant room for development. Summary of the Invention

[0007] To address the aforementioned technical problems in the prior art, the present invention provides an environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin management.

[0008] An environment-driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management includes a flexible detection device. The flexible detection device comprises a bottom encapsulation layer, a base layer, and a top encapsulation layer stacked sequentially. The base layer has the following features: Ultraviolet (UV) sensor module for UV dose detection; An environmental driving module is used to generate electricity and supply power to the ultraviolet sensing module. The environmental driving module includes an environmental driving power generation unit, which includes a first electrode layer, an environmental driving layer, a proton exchange membrane layer, a first power generation thin film layer, a second power generation thin film layer, and a second electrode layer stacked sequentially. The environmental driving layer includes a phase change material, which changes from a solid phase to a liquid phase at the temperature of human skin, thereby reducing the barrier effect of the environmental driving layer. In the first power generation thin film layer and the second power generation thin film layer, polycations and polyanions dissociate into positive and negative ions, respectively, and migrate in opposite directions, so that a potential difference is generated between the first electrode layer and the second electrode layer to output electrical energy.

[0009] Preferably, the phase change material has a phase change temperature of 26~32℃. This phase change temperature is suitable for maintaining the phase change material in a solid state at ambient temperature in most cases, while it transitions to a liquid state at human skin temperature. However, in environments with high ambient temperatures, such as summer, the environmentally driven ultraviolet dose monitoring device used for phototherapy and / or postoperative skin rehabilitation management should be stored in a cool place or directly in a temperature-controlled environment or device such as a refrigerator to prevent the phase change material from melting prematurely due to excessively high ambient temperatures.

[0010] Preferably, the phase change material is polyethylene glycol with a molecular weight of 700-900. More preferably, the phase change material is polyethylene glycol with a molecular weight of 800.

[0011] Preferably, the polycation in the first power-generating thin film layer is polydiallyldimethylammonium chloride; The polyanion in the second power-generating thin film layer is polystyrene sulfonic acid.

[0012] More preferably, the second power-generating thin film layer is a physical composite formed by polystyrene sulfonic acid and polyvinyl alcohol through hydrogen bonding and electrostatic interaction.

[0013] Preferably, the thickness of the first electrode layer is 80-120 μm; the thickness of the environmental driving layer is 150-200 μm; the thickness of the proton exchange membrane layer is 150-190 μm; the thickness of the first power generation thin film layer is 150-200 μm; the thickness of the second power generation thin film layer is 150-200 μm; and the thickness of the second electrode layer is 80-120 μm.

[0014] Preferably, the first electrode layer is a copper foil and the second electrode layer is an aluminum foil.

[0015] Preferably, the base layer further comprises: The energy management module is used to receive, regulate, and distribute electrical energy from the environmental drive module to the various power consumption units on the base layer; The analog-to-digital converter module is used to convert the analog current signal detected and output by the ultraviolet sensor module into a digital signal. The central processing unit controls the data acquisition timing and processes digital signals from the digital-to-analog converter module; The wireless communication module transmits digital signals to the central processing unit and also transmits wireless signals to external smart terminals.

[0016] Preferably, the environmental drive module includes multiple environmental drive power generation units connected in series.

[0017] Preferably, the method for preparing the environmentally driven power generation unit includes the following steps: first, forming a second power generation thin film layer on the second electrode layer; then, forming a first power generation thin film layer on the second power generation thin film layer; next, placing a proton exchange membrane layer on the first power generation thin film layer; then, forming an environmental driving layer on the proton exchange membrane layer; and finally, encapsulating the first electrode layer.

[0018] Preferably, the environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management further includes a smart terminal, which is one or more of a smartphone, smartwatch, and computer with data processing and storage functions, and the smart terminal is equipped with Bluetooth or NFC functions.

[0019] Based on the above-described environment-driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management, the present invention also provides an environment-driven ultraviolet dose monitoring method for phototherapy and / or postoperative skin rehabilitation management, comprising the following steps: (b1) When medical staff or users attach the flexible detection device to the skin area to be monitored, the environmental driving module is activated and starts to supply power due to the local body temperature and humidity environment of the skin. The ultraviolet sensing module is activated to monitor the intensity of ultraviolet irradiation on the skin surface in real time during phototherapy or postoperative skin recovery. (b2) Users establish a connection with the wireless communication module of the flexible detection device through a smart terminal to obtain real-time ultraviolet intensity data, cumulative ultraviolet dose information or dose over-limit alarm information, and evaluate and manage the ultraviolet exposure during the phototherapy process or postoperative skin recovery based on the data. (b3) The environmental drive module continuously outputs power when in contact with the skin to provide power support for the ultraviolet sensing module, data processing module and wireless communication module, so as to realize the continuous acquisition, processing and transmission of ultraviolet dose data.

[0020] The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin management described in this invention has the following power generation principle: (c1) This patch is a single-use product. After the patch is applied to the skin, body temperature raises the patch temperature. Once the body temperature-activated layer reaches its phase transition temperature, a state change occurs, opening the ion channels that were previously blocked by this layer. This allows ion migration between the first and second power-generating thin film layers. The first power-generating thin film layer absorbs ambient moisture and becomes positively charged, releasing mobile ions such as chloride ions. The second power-generating thin film layer absorbs moisture and becomes negatively charged, releasing mobile ions such as sulfonate ions. When an ion concentration gradient or potential difference forms between the two layers, cations and anions migrate in opposite directions, creating a potential difference between the two layers and generating electricity.

[0021] (c2) Further, the present invention provides copper electrodes and aluminum electrodes at both ends of the power generation module. The aluminum electrode acts as the anode and participates in the metal-air reaction: aluminum loses electrons in a humid environment to generate Al. 3+ Oxygen gains electrons on the surface of the copper electrode to generate OH-. - This reaction can accelerate the diffusion rate of ions between the two layers, thereby increasing the output power.

[0022] The present invention has the following beneficial effects: (1) By using the local temperature and humidity of the human body to trigger power supply through the environmental driving module, the device can be started in an environmental response manner, avoiding the problem of continuous self-discharge of traditional self-powered batteries after preparation or exposure to the environment, reducing ineffective energy loss, and helping to extend the effective working life of the power supply module; at the same time, it gets rid of the dependence on traditional batteries, making the flexible detection device lightweight, flexible and low-maintenance. (2) The flexible substrate and thin film layering design make the device thin, flexible and flexible, which can comfortably fit the skin and achieve truly imperceptible wearing; (3) It integrates ultraviolet dose monitoring, data processing and wireless communication functions, and realizes a closed-loop monitoring system from real-time monitoring of ultraviolet irradiation, cumulative dose calculation to dose warning and individualized management. It can meet the needs of continuous monitoring and precise management of ultraviolet exposure during phototherapy and postoperative skin rehabilitation, and has good application value in the field of wearable medical monitoring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an environmentally driven ultraviolet dose monitoring device for phototherapy and postoperative skin management. Figure 2 A flowchart illustrating the workflow of an environment-driven ultraviolet dose monitoring device for phototherapy and postoperative skin management. Figure 3 This is a schematic diagram of the structure of an environmentally driven power generation unit; Figure 4 Comparison of melting points of polyethylene glycol with different molecular weights; Figure 5 This is a flowchart illustrating the fabrication process of the environment-driven module. Figure 6 A schematic diagram showing the activation of the environmentally driven power generation unit; Figure 7 A schematic diagram of the open-circuit potential for different numbers of environmental drive power generation units in the environmental drive module; Figure 8 Schematic diagram of the output power of the environmental drive module; Figure 9 This is a graph showing the ultraviolet radiation power results from an ultraviolet absorbed dose monitoring device.

[0024] Figure label: 1. Smart terminal; 2. Ultraviolet sensing module; 3. Energy management module; 4. Central processing unit; 5. Wireless communication module; 6. Environmental drive module; 7. Digital-to-analog conversion module; 8. Flexible polyimide substrate; 9. Top encapsulation layer; 10. Bottom encapsulation layer; 11. First electrode layer; 12. Environmental drive layer; 13. Proton exchange membrane layer; 14. First power generation thin film layer; 15. Second power generation thin film layer; 16. Second electrode layer. Detailed Implementation

[0025] refer to Figure 1 and Figure 2As shown, this embodiment provides an environment-driven ultraviolet dose monitoring device for phototherapy and postoperative skin management, comprising a smart terminal 1 and a flexible detection device. The flexible detection device includes a bottom encapsulation layer 10, a base layer 8, and a top encapsulation layer 9 stacked sequentially. The top encapsulation layer 9 and the bottom encapsulation layer 10 are made of transparent, flexible medical-grade silicone material to protect the internal circuitry. The layers are bonded together using a biocompatible adhesive.

[0026] The substrate 8 is provided with an environmental driving module 6, an ultraviolet sensing module 2, an energy management module 3, a central processing unit 4, a wireless communication module 5, and a digital-to-analog conversion module 7. The substrate 8 is preferably a flexible polyimide substrate.

[0027] The ultraviolet (UV) sensing module 2 uses the ML8511 UV sensor, whose spectral response range covers the UVA and UVB bands, for real-time detection of UV intensity in the environment. The analog-to-digital converter (ADC) module 7 is directly connected to the UV sensing module 2, responsible for converting the analog current signal output by the sensor into a digital signal for processing by the central processing unit 4. The central processing unit 4 uses an ultra-low-power microcontroller, the MSP430FR2433, which integrates an analog-to-digital converter and a real-time clock. It is responsible for controlling the data acquisition timing and processing the digital signals from the ADC module 7. The wireless communication module 5 uses a low-power Bluetooth chip, responsible for establishing a wireless connection with the external smart terminal 1 and transmitting monitoring data and alarm information. The energy management module 3 includes a low-dropout linear regulator and power management circuitry, used to receive, regulate, and rationally distribute electrical energy from the environmental drive module 6 to various units of the system.

[0028] Apart from the wireless communication module 5 and the external smart terminal 1 being connected wirelessly (e.g., via Bluetooth), all other components on the base layer 8 are connected via circuits, i.e., using common printed circuit boards (PCBs), which are conventional connection circuits. None of the connection circuits are shown in the figure.

[0029] The environmental drive module 6 is the core power supply unit of the system. It includes multiple environmental drive power generation units connected in series, with a layered structure as follows: Figure 3As shown, the layers are arranged in sequence as follows: second electrode layer 16, second power generation thin film layer 15, first power generation thin film layer 14, proton exchange membrane layer 13, environmental driving layer 12, and first electrode layer 11. The power generation module is stored at a relatively low temperature, generally below 20°C. The first electrode layer 11 and the second electrode layer 16 use copper foil and aluminum foil as current collectors, respectively. The first power generation thin film layer 14 is composed of polydiallyldimethylammonium chloride, and the second power generation thin film layer 15 is composed of a physical composite of polystyrene sulfonic acid and polyvinyl alcohol, which respectively provide ion sources as a polycation layer and a polyanion layer. The proton exchange membrane layer 13 is used to construct ion transport channels. The environmental driving layer 12 is composed of polyethylene glycol with a molecular weight of 800 and serves as an environmental response layer. When the flexible detection device is attached to the skin, the body temperature raises the device temperature. After the environmental driving layer 12 reaches its phase transition temperature, it changes from a solid state to a molten state, and the ion channels that were originally blocked by this layer are opened. The polycation layer and polyanion layer dissociate into positive and negative ions, forming an ion concentration gradient. This gradient drives the cations and anions to migrate in opposite directions through the molten environment, thereby generating a potential difference across the multilayer structure and continuously outputting electrical energy.

[0030] When the flexible detection device is attached to the skin, the body temperature raises the device's temperature. Once the environmental driving layer 12 reaches its phase transition temperature, it changes from a solid to a molten state, opening the ion channels that were previously blocked by this layer. The polycation layer and polyanion layer dissociate into positive and negative ions, respectively, forming an ion concentration gradient. This gradient drives the cations and anions to migrate in opposite directions through the molten environmental driving layer, thereby generating a potential difference across the multilayer structure and continuously outputting electrical energy.

[0031] like Figure 4 As shown, the melting point of polyethylene glycols with different molecular weights gradually increases with the increase of their average molecular weight. Polyethylene glycols with a molecular weight of 600 and below have lower melting points and are mostly liquid or highly fluid at room temperature, making it difficult to maintain the stable structure required for the environmental driving layer. Polyethylene glycol with an average molecular weight of 1000 has a melting point of approximately 38°C, higher than the surface temperature of human skin, making it difficult to undergo phase transition under skin contact conditions, which is detrimental to the activation of the environmental driving power generation unit. Considering both the structural stability and skin-contact activation performance of the environmental driving layer, polyethylene glycol with an average molecular weight of 700-900 is preferred as the environmental driving layer material. Among them, polyethylene glycol with an average molecular weight of approximately 800 has a melting point of approximately 26-32°C, close to the surface temperature of human skin. It can maintain a stable solid structure at room temperature and undergo a phase transition under skin contact conditions, effectively opening ion transport channels. Therefore, it is the preferred embodiment of this invention. The melting point of polyethylene glycol with an average molecular weight of about 700 is between that of polyethylene glycol with a molecular weight of 600 and 800, while the melting point of polyethylene glycol with an average molecular weight of about 900 is between that of polyethylene glycol with a molecular weight of 800 and 1000.

[0032] The preparation method of environment-driven module 6, such as Figure 5 As shown, the method includes the following steps: (a1) Solution preparation: Prepare solution A, solution B and solution C.

[0033] Solution A is a 30% (w / w) aqueous solution of poly(diallyldimethylammonium chloride), with a molecular weight of 400,000-500,000 (also known as polyquaternium-6, PDADMAC, a strong cationic polyelectrolyte).

[0034] Preparation method of solution B: A 10% (w / w) solution of polystyrene sulfonic acid (PSS, polyanionic acid) with a molecular weight of ~70,000 and a 5% (w / w) aqueous solution of polyvinyl alcohol (PVA, polyvinyl alcohol) with a molecular weight of ~34,000 are magnetically stirred and heated at 80°C for 1 hour. Then, they are mixed evenly at a mass ratio of 5:1 to obtain solution B. In this solution, polystyrene sulfonic acid (PSS) provides migratable anions as a polyanionic material, while polyvinyl alcohol (PVA) serves as a film-forming and structurally stabilizing component. PSA forms a physical composite network with PSS through hydrogen bonding, improving the mechanical stability, water retention, and flexibility of the second power-generating thin film layer, while also providing a stable transport medium for ion migration.

[0035] Solution C is a liquid polyethylene glycol solution made by heating solid polyethylene glycol with a molecular weight of 800 in a water bath at 60°C until it is completely melted.

[0036] (a2) Film Formation and Composite Assembly: Solution B is uniformly sprayed onto the surface of an aluminum electrode (second electrode layer 16, thickness 80-120 μm), and then dried in a 60°C oven to form a dense shaped film (second power generation thin film layer 15) with a thickness of 150-200 μm. Subsequently, solution A is coated onto the surface of the shaped film using a casting method and dried at 75°C. The film layer formed by solution A is the first power generation thin film layer 14, with a thickness of 150-200 μm. The first power generation thin film layer 14 and the second power generation thin film layer 15 form a composite film. Next, a Nafion N115 proton exchange membrane (proton exchange membrane layer 13) with a thickness of 150-190 μm is smoothly laid on the composite film. Finally, the liquid C solution is cast onto the other side of the proton exchange membrane and allowed to solidify at room temperature (the resulting membrane layer is the environmental driving layer 12, with a thickness of 150-200 μm), ultimately forming an environmental driving composite power generation membrane material.

[0037] (a3) Cutting and Integration: The multilayer film material obtained in step (a2) is cut into multiple rectangular power generation units with dimensions of 1.5 cm in length and 1.0 cm in width using a laser cutter. These units are encapsulated using copper electrodes (first electrode layer 11, with a thickness of 80-120 μm). Finally, multiple such basic unit modules are connected in series in the circuit and physically aligned and stacked, then bonded and connected using conductive silver paste to integrate them into an environmental drive module 6 with sufficient output voltage and power. The copper electrode layer has a thickness of 80-120 μm; the aluminum electrode layer has a thickness of 80-120 μm.

[0038] like Figure 6 As shown, open-circuit voltage and response characteristics were tested to evaluate the power generation performance of a single environmentally driven generator unit. The experimental procedure was as follows: a single environmentally driven generator unit was placed on a constant-temperature heating platform, with the platform temperature set to 36℃ to simulate the surface temperature of human skin. The output terminal of the generator unit was connected to a digital multimeter or data acquisition system. After the temperature stabilized, the open-circuit voltage change curve over time was recorded. When the environmentally driven generator unit came into contact with the simulated heat source at 36℃, its response was activated, and it began to gradually generate a potential. The experiment showed that, under stable operating conditions, the open-circuit potential of a single environmentally driven generator unit was approximately 0.5-0.6 V.

[0039] like Figure 7 As shown, to investigate the effect of integrated design on output voltage improvement, different numbers (1, 2, 4, and 6) of environmental drive units were connected in series, and the relationship between their open-circuit voltage and the number of units was tested. The results show that the voltage of the series-connected units increases approximately linearly with the increase in the number of units. Considering the operating voltage requirements of actual sensing circuits, 6 units were connected in series to form an integrated environmental drive module.

[0040] like Figure 8 As shown, to further evaluate the actual power supply capability of this integrated module, the output power of the environmental drive module, consisting of six units connected in series, was measured by changing the external load resistance. Experimental results show that under matched load conditions, the module can stably output approximately 0.61 mW of power, meeting the low-power operation requirements of modules such as ultraviolet sensing, signal processing, and wireless communication.

[0041] like Figure 9 As shown, to verify the system's monitoring function, the integrated wearable ultraviolet absorbed dose monitoring device was exposed to ultraviolet light. The ultraviolet sensor module 2 monitored and recorded the ultraviolet intensity change curve in real time. The data shows that the ultraviolet intensity increased significantly after exposure to ultraviolet light, indicating that the flexible detection device has a sensitive response to ultraviolet changes and continuous monitoring capabilities, which can effectively support the quantitative assessment of personal ultraviolet radiation.

[0042] In conjunction with the above specific embodiments, the environmentally driven ultraviolet dose monitoring device and method for phototherapy and postoperative skin management of the present invention further includes the following steps: (b1) When medical staff or users attach the flexible detection device to the skin area to be monitored, the environmental drive module 6 is activated by the local body temperature and humidity environment of the skin and starts to generate electricity. The generated electrical energy is regulated by the energy management module 3 to power the system.

[0043] (b2) After the system is powered on, the ultraviolet sensor module 2 begins to monitor the intensity of ultraviolet irradiation on the skin surface in real time at a preset frequency during phototherapy or postoperative skin recovery. The monitoring data is converted by the digital-to-analog converter module 7 and then received and processed in real time by the central processing unit 4. The central processing unit 4 calculates the cumulative ultraviolet dose in real time according to the formula "cumulative dose = Σ (ultraviolet irradiation intensity × sampling time interval)", and saves the monitoring data, cumulative dose, and time information in real time and sends them to the smart terminal 1.

[0044] (b3) The user establishes a connection with the wireless communication module 5 of the flexible detection device through the smart terminal 1, and reads and displays the current ultraviolet irradiation intensity, cumulative dose and monitoring status information in real time. When the ultraviolet dose is detected to reach the preset threshold or exceed the target management range, the system sends a prompt message to the user or medical staff to assist in the control of phototherapy process or the management of ultraviolet exposure during postoperative skin recovery.

[0045] Compared to existing wearable ultraviolet (UV) monitoring devices, this invention offers the following advantages: Firstly, it innovatively utilizes the local temperature and humidity of human skin as driving conditions. Through an environmental drive module, it achieves controlled activation and power supply, enabling the monitoring device to start operating under actual skin-touch conditions. This avoids the energy loss problem caused by the continuous self-discharge of traditional self-powered devices after fabrication or environmental exposure, thus extending the effective lifespan of the power supply module. Secondly, this invention eliminates reliance on traditional batteries or external power sources, simplifying the system's power supply structure and making the overall design thinner, more flexible, integrated, and reliable, making it more suitable for skin-touch medical monitoring applications. Furthermore, the UV sensing module is highly integrated with the environmental drive power generation, data processing, and wireless communication systems, achieving a continuous monitoring process from real-time monitoring of UV irradiation on the skin surface and automatic calculation of cumulative dose to dose warning and individualized management. This solution overcomes the limitations of traditional single-function monitoring, meeting the continuous and quantitative monitoring needs of UV exposure during phototherapy and postoperative skin recovery. It has significant application value and promising prospects in the fields of skin medical monitoring, phototherapy dose management, and postoperative rehabilitation management.

Claims

1. An environment-driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management, characterized in that, The device includes a flexible detection device comprising a bottom encapsulation layer, a base layer, and a top encapsulation layer stacked sequentially, wherein the base layer has: Ultraviolet (UV) sensor module for UV dose detection; An environmental driving module is used to generate electricity and supply power to the ultraviolet sensing module. The environmental driving module includes an environmental driving power generation unit, which includes a first electrode layer, an environmental driving layer, a proton exchange membrane layer, a first power generation thin film layer, a second power generation thin film layer, and a second electrode layer stacked sequentially. The environmental driving layer includes a phase change material, which changes from a solid phase to a liquid phase at the temperature of human skin, thereby reducing the barrier effect of the environmental driving layer. In the first power generation thin film layer and the second power generation thin film layer, polycations and polyanions dissociate into positive and negative ions, respectively, and migrate in opposite directions, so that a potential difference is generated between the first electrode layer and the second electrode layer to output electrical energy.

2. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The phase transition temperature of the phase change material is 26~32℃.

3. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The phase change material is polyethylene glycol with a molecular weight of 700-900.

4. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The polycation in the first power-generating thin film layer is polydiallyl dimethylammonium chloride; The polyanion in the second power-generating thin film layer is polystyrene sulfonic acid.

5. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 4, characterized in that, The second power-generating thin film layer is a physical composite formed by polystyrene sulfonic acid and polyvinyl alcohol through hydrogen bonding and electrostatic interaction.

6. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The thickness of the first electrode layer is 80-120 μm; the thickness of the environmental driving layer is 150-200 μm; the thickness of the proton exchange membrane layer is 150-190 μm; the thickness of the first power generation thin film layer is 150-200 μm; the thickness of the second power generation thin film layer is 150-200 μm; and the thickness of the second electrode layer is 80-120 μm.

7. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The first electrode layer is copper foil, and the second electrode layer is aluminum foil.

8. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The base layer is also provided with: The energy management module is used to receive, regulate, and distribute electrical energy from the environmental drive module to the various power consumption units on the base layer; The analog-to-digital converter module is used to convert the analog current signal detected and output by the ultraviolet sensor module into a digital signal. The central processing unit controls the data acquisition timing and processes digital signals from the digital-to-analog converter module; The wireless communication module transmits digital signals to the central processing unit and also transmits wireless signals to external smart terminals.

9. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The environmental drive module includes multiple environmental drive power generation units connected in series.

10. The environmentally driven ultraviolet dose monitoring device for phototherapy and / or postoperative skin rehabilitation management according to claim 1, characterized in that, The method for preparing the environmentally driven power generation unit includes the following steps: first, forming a second power generation thin film layer on the second electrode layer; then, forming a first power generation thin film layer on the second power generation thin film layer; next, placing a proton exchange membrane layer on the first power generation thin film layer; then, forming an environmental driving layer on the proton exchange membrane layer; and finally, encapsulating the first electrode layer.

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