A photobiomodulation method and device based on outdoor tracking

Abstract

The application provides an outdoor tracking-based photobiomodulation method and device. The method comprises: determining effective outdoor time of a user according to collected light exposure data of the user; determining a light compensation level of the user according to the effective outdoor time and a target effective outdoor time; determining photobiomodulation parameters and simulated light compensation parameters according to the light compensation level; when the user is in a specified light compensation scene, outputting artificial light simulating outdoor natural light characteristics according to the simulated light compensation parameters; and performing photobiomodulation on the user according to the photobiomodulation parameters, preset wavelength red light and near-infrared light. The application can achieve the purpose of a comprehensive system that comprehensively simulates outdoor light environment characteristics and integrates photobiomodulation, and provides a more complete solution for myopia prevention and control.

Description

Technical Field

[0001] This application relates to the field of myopia prevention and control technology, and in particular to a photobiological modulation method and device based on outdoor tracking. Background Technology

[0002] Numerous epidemiological studies have confirmed a negative correlation between outdoor activity time and the incidence of myopia; increasing outdoor activity by one hour per week can reduce the risk of myopia by approximately 2%. The mechanisms by which outdoor light protects vision involve multiple aspects: First, outdoor light intensity is much higher than indoor light, typically reaching 10,000-100,000 lux. Strong light stimulates the retina to release dopamine, inhibiting axial elongation. Second, outdoor natural light has a full spectrum, containing complete visible light and a suitable amount of ultraviolet light, which is beneficial for maintaining normal retinal physiological function. Furthermore, the long-distance vision and dynamic changes in light in the outdoor environment help regulate the refractive development of the eyeball.

[0003] However, in modern society, especially in urban environments, it is difficult for children and adolescents to guarantee sufficient outdoor activity time. Academic pressure, safety concerns, air pollution, and weather conditions limit outdoor activities. Indoor lighting environments differ significantly from natural outdoor light: indoor illuminance is typically only 300-500 lux, with a relatively high blue light component in the spectrum and a lack of dynamic variation. This lifestyle of prolonged exposure to artificial light is considered a significant environmental factor contributing to the prevalence of myopia.

[0004] While some daylight-simulating lighting products exist on the market, most focus only on achieving a comprehensive spectrum or high illuminance, failing to consider the temporal dynamics of outdoor light or integrate with proven myopia control methods such as PBM (Photobiomodulation). Therefore, there is an urgent need for a comprehensive system that can fully simulate the characteristics of the outdoor light environment and integrate PBM therapy, providing a more complete solution for myopia control. Summary of the Invention

[0005] The purpose of this application is to provide a photobiological modulation method and device based on outdoor tracking, so as to achieve a comprehensive system that fully simulates the characteristics of the outdoor light environment and integrates PBM therapy, thereby providing a more complete solution for myopia prevention and control. The specific technical solution is as follows: In a first aspect of this application, a photobiological modulation method based on outdoor tracking is provided, comprising: The effective outdoor time of the user is determined based on the collected light exposure data of the user; The user's light compensation level is determined based on the effective outdoor time and the target effective outdoor time. Based on the light compensation level, determine the photobiological regulation parameters and the simulated light compensation parameters; When the user is in a specified light compensation scene, artificial light simulating the characteristics of outdoor natural light is output according to the simulated light compensation parameters. The user is subjected to photobiological regulation based on the aforementioned photobiological regulation parameters and preset wavelengths of red and near-infrared light.

[0006] A second aspect of this application provides a photobiological modulation device based on outdoor tracking, comprising: The time determination module is used to determine the user's effective outdoor time based on the collected user's light exposure data; The level determination module is used to determine the user's light compensation level based on the effective outdoor time and the target effective outdoor time. The parameter determination module is used to determine the photobiological adjustment parameters and the simulated light compensation parameters based on the light compensation level. The artificial light output module is used to output artificial light that simulates the characteristics of outdoor natural light according to the simulated light compensation parameters when the user is in a specified light compensation scene. The photobiological regulation module is used to perform photobiological regulation on the user based on the photobiological regulation parameters and preset wavelengths of red and near-infrared light.

[0007] In another aspect of this application, an electronic device is also provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; When the processor executes a program stored in the memory, it implements any of the above-described photobiological regulation methods based on outdoor tracking.

[0008] In another aspect of this application, a computer-readable storage medium is also provided, wherein instructions are stored therein, which, when executed on a computer, cause the computer to perform any of the above-described photobiological modulation methods based on outdoor tracking.

[0009] The solution provided in this application determines the effective outdoor time and light compensation level by collecting light exposure data, and then determines the simulated light compensation parameters and photobiological adjustment parameters. By outputting artificial light that simulates the characteristics of outdoor natural light, and emitting preset wavelength red light and near-infrared light, the solution adjusts the PBM for the user, thereby achieving the organic integration of comprehensive simulation of the outdoor light environment and photobiological adjustment, and thus providing a more complete solution for myopia prevention and control. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0011] Figure 1 A flowchart illustrating the steps of a photobiological regulation method based on outdoor tracking, provided in this application embodiment; Figure 2 A schematic diagram of a photobiological regulation device based on outdoor tracking provided in this application embodiment; Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0012] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0013] Figure 1 This is a flowchart illustrating the steps of a photobiological modulation method based on outdoor tracking, provided as an embodiment of this application. Figure 1 As shown, the photobiological regulation method based on outdoor tracking may include steps 101 to 105.

[0014] Step 101: Determine the user's effective outdoor time based on the collected user's light exposure data.

[0015] In this embodiment, light exposure data refers to various types of data related to user light exposure collected in real time or at regular intervals by light acquisition devices (such as smart wearable devices and ambient light sensors). The core data includes light intensity (unit: lux), light duration, light spectrum distribution, light time period (such as day / night), and light scene (outdoor / indoor).

[0016] Effective outdoor time refers to the cumulative duration of outdoor sunlight exposure that meets the "effective light exposure standard" and is selected from light exposure data. The effective light exposure standard needs to be set in advance. For example, it is a period of time with outdoor light intensity ≥1000 lux (close to the average outdoor light intensity on a sunny day), no obvious obstruction (such as tree shade or building obstruction causing a sudden drop in light intensity), and a single exposure duration ≥10 minutes (to avoid invalid data from short outdoor stays). The cumulative duration of these periods is the effective outdoor time.

[0017] When performing photobiological regulation on users, light exposure data can be collected. Wearable light sensors worn on the user's body and ambient light sensors in the user's environment can collect the user's time-series light data in real time. Each data point includes a timestamp, light intensity, spectral distribution, and some data also include light location and ultraviolet exposure.

[0018] After data acquisition, the data is preprocessed by slicing it into segments according to fixed time windows (usually one frame per minute) to remove outliers, such as extremely low illumination data caused by sensor obstruction or extremely high illumination data caused by momentary strong light interference. Simultaneously, short, missing data points are filled in to ensure data integrity and accuracy. Next, effective outdoor illumination is determined by evaluating the illumination data for each time window.

[0019] First, it is determined whether the light intensity within the given time window is not lower than a preset effective outdoor light threshold (e.g., 1000 lux). Then, using auxiliary methods such as spectral characteristics, user location information, or sensor acceleration data, it is determined whether the user is in an outdoor environment during this period, excluding high-illuminance interference from indoor artificial light sources. If both the light intensity and outdoor scene conditions are met, the time window is marked as an effective outdoor period. Finally, the durations of all marked effective outdoor periods are summed to obtain the user's cumulative effective outdoor time for the day, which serves as the core basis for subsequent judgments on the degree of insufficient light.

[0020] Step 102: Determine the user's light compensation level based on the effective outdoor time and the target effective outdoor time.

[0021] The target effective outdoor time refers to the minimum outdoor light exposure duration standard preset according to the user's age, health status and life scenario, which meets the user's normal physiological needs (such as vitamin D synthesis and biological clock regulation). Usually, the target effective outdoor time for adults is 120 minutes per day, while children and the elderly can adjust it according to their actual situation.

[0022] Light compensation level refers to the priority level of compensation based on the difference between the user's actual effective outdoor time and the target effective outdoor time, used to determine the level of compensation. The levels can be divided into mild, moderate, and severe. The smaller the difference, the lower the compensation level, and vice versa (e.g., a difference of <30 minutes is no compensation required, 30-60 minutes is mild, 60-90 minutes is moderate, and greater than 90 minutes is severe).

[0023] Obtain the user's actual effective outdoor time calculated in the first step, as well as the system-preset or doctor-defined target effective outdoor time. Calculate the difference between the two to obtain the user's light deficit for the day, which is equal to the target effective outdoor time minus the actual effective outdoor time.

[0024] If the calculated light deficit is less than or equal to 0, it means the user's effective outdoor time for the day has reached or exceeded the target value, and the lighting is sufficient, requiring no compensation. If the light deficit is greater than 0, it means the user's outdoor lighting for the day is insufficient, and a light compensation level needs to be determined based on the specific duration of the deficit. The general classification rule is as follows: when the light deficit is less than 30 minutes, it is determined as no compensation is required; when the light deficit is between 30 and 60 minutes (inclusive, excluding 60 minutes), it is determined as a low compensation level; when the light deficit is between 60 and 90 minutes (inclusive, excluding 90 minutes), it is determined as a medium compensation level; when the light deficit is greater than or equal to 90 minutes, it is determined as a high compensation level. After determining the compensation level, the system will match the corresponding compensation parameters according to that level.

[0025] Step 103: Determine the photobiological adjustment parameters and simulated light compensation parameters based on the light compensation level.

[0026] Photobiological modulation parameters (PBM parameters) are a set of treatment parameters used to control the output of red and near-infrared light therapy devices. They mainly include the wavelength of the therapeutic light, power density, duration of a single treatment, number of treatments per day, treatment time period, and the maximum upper limit of the daily treatment dose. These parameters directly determine the efficacy and safety of photobiological modulation therapy.

[0027] Simulated light compensation parameters refer to the set of ambient light parameters used to control the output of indoor full-spectrum simulated light sources. These parameters mainly include the target illuminance, spectral ratio, dynamic illuminance change curve, blue light ratio, and the on-time and on-period of the simulated light. The core purpose is to make the indoor simulated light as close as possible to the characteristics of outdoor natural light, thereby compensating for insufficient outdoor lighting.

[0028] The system has a pre-stored mapping table of light compensation levels and photobiological adjustment parameters and simulated light compensation parameters. Once the user's light compensation level is determined, the system will automatically query the mapping table and output the corresponding two sets of parameters.

[0029] Regarding the determination of photobiological regulation parameters, the wavelengths of the therapeutic light are first fixed at 630–680 nm for red light and 810–850 nm for near-infrared light. The preset baseline power density is 20 mW / cm², and the baseline treatment duration is 3 to 5 minutes. Adjustments are then made according to the compensation level: when no compensation level is needed, the photobiological regulation function is turned off, or only the baseline health dose is maintained without additional treatment. At a low compensation level, the baseline power density is multiplied by 1.2, and the treatment duration is increased by 1 minute. At a moderate compensation level, the baseline power density is multiplied by 1.5, and the treatment duration is increased by 2 minutes. At a high compensation level, the baseline power density is multiplied by 1.8, and the treatment duration is increased by 3 minutes, while also increasing the number of additional treatments in the evening.

[0030] Meanwhile, to ensure treatment safety, the system constrains photobiological adjustment parameters, controlling the power density adjustment range between 8 and 50 mW / cm², and ensuring the total daily treatment dose does not exceed twice the baseline dose. The simulated light compensation parameters are determined primarily based on the compensation level, adjusting the target illuminance accordingly. When no compensation level is required, the simulated light maintains a standard indoor illuminance of 300 to 500 lux. At low compensation levels, the target illuminance is no less than 2000 lux; at medium compensation levels, the target illuminance is no less than 3000 lux; and at high compensation levels, the target illuminance is no less than 5000 lux, approaching the equivalent outdoor illuminance.

[0031] Regardless of the compensation level, the simulated light spectrum is full spectrum, with a color rendering index Ra of no less than 95. The dynamic illuminance change curve can be selected as either sunny or cloudy mode. The proportion of blue light is adjusted according to the time of day, maintaining a normal proportion during the day and reducing it to less than 50% of the daytime level in the evening. The duration of the simulated light is extended as the compensation level increases to ensure the compensation effect.

[0032] Step 104: When the user is in the specified light compensation scene, output artificial light that simulates the characteristics of outdoor natural light according to the simulated light compensation parameters.

[0033] Designated light compensation scenarios refer to pre-set fixed scenarios suitable for activating indoor light compensation and PBM therapy. These are typically indoor scenarios where users spend a long time and where there is insufficient light, such as living rooms, offices, and bedrooms (during non-sleep periods). These scenarios can be confirmed through device positioning or manual settings by the user.

[0034] Artificial light that simulates the characteristics of outdoor natural light is indoor lighting light output by a multispectral LED array that closely approximates natural sunlight in terms of spectrum, illuminance, and dynamic changes.

[0035] First, the system determines whether the user is in the preset light compensation scene by using a variety of methods, including determining the user's location through indoor positioning technologies such as WiFi and Bluetooth, detecting whether the user is in the scene through human presence sensors, manually selecting corresponding modes such as "study", "study room" or "night" on the APP, or identifying whether the user is in a close-range eye use state through cameras and radar.

[0036] When any one of the judgment conditions is met, the user is confirmed to be in the designated light compensation scene. Subsequently, the system's central controller, based on the simulated light compensation parameters determined in the third step, drives the ceiling-mounted or desktop full-spectrum simulated light source to start, outputting light according to the preset target illuminance. Simultaneously, it achieves a gradual change in light intensity according to the selected dynamic illuminance change curve, ensuring flicker-free output light and preventing harm to the user's eyes. At the same time, the system monitors changes in indoor ambient light in real time. If natural light is detected entering the room, it automatically reduces the output intensity of the artificial simulated light to prevent excessive illumination.

[0037] If an imbalance in the spectrum of the existing indoor light environment is detected, the power of each channel of the light source will be automatically adjusted to fill in the missing spectral bands and ensure that the spectral characteristics of the simulated light are close to those of natural outdoor light.

[0038] If no one is detected in the scene, the system will automatically enter a low-power standby mode to save energy. When a user is detected to have entered the scene again, the system will resume the output of analog light to ensure that the output of analog light is stable and continuous, and can truly reproduce the characteristics of outdoor natural light.

[0039] Full-spectrum sunlight simulation can employ a large-area diffuse luminescent panel design with a luminescent area of ​​not less than 0.3m² and an illuminance uniformity of not less than 0.7 in the irradiated area.

[0040] In practical implementation, the light source for simulating artificial light can be a multi-channel LED array, including: (1) violet channel (400-420nm); (2) blue channel (450-470nm); (3) cyan channel (490-510nm); (4) green channel (520-550nm); (5) yellow channel (570-590nm); (6) orange channel (600-620nm); (7) red channel (630-660nm); (8) deep red channel (680-700nm). The power of each channel can be adjusted independently, and the spectral characteristics of sunlight at different times can be reproduced through precise proportioning. A phosphor layer with a special formula is added to fill the missing bands in the LED emission spectrum, so that the continuity and smoothness of the final output spectrum reach the level of natural sunlight. Spectral similarity indices were evaluated using the general color rendering index Ra and the special color rendering index Ri defined by CIE, with Ra ≥ 95, and R9 (saturated red), R12 (saturated blue), and R15 (skin color) all ≥ 90. The adjustable illuminance range was set to 500-30,000 lux.

[0041] In its implementation, visual comfort during high-illuminance output is a key consideration in this application. The system employs the following anti-glare design: (1) a large-area (≥0.5m²) diffuse light-emitting panel is used to reduce the uniformity of light source brightness; (2) a microprism film layer is used to cover the surface of the light source to guide the light downwards and laterally, reducing glare when looking directly at the light source; (3) a reasonable installation height and angle are set so that the light illuminates the area in a manner similar to skylight; (4) a user-adjustable light shield allows adjustment of the illumination range according to individual sensitivity. The illuminance uniformity (minimum / average) of the irradiated area is ≥0.7.

[0042] Configuration schemes for different scenarios can be described as follows: For school classroom lighting systems: (1) Install 6-8 ceiling-mounted main light source panels in each classroom, with a total power of about 1200W and a maximum output illuminance of 5000 lux (desktop); (2) Set environmental monitoring sensors at the front and back of the classroom; (3) Connect the central controller to the school network for remote management and monitoring; (4) Automatically increase the illuminance during breaks to simulate the outdoor environment; (5) Reduce the indoor illuminance after outdoor activities such as physical education classes to follow the natural rhythm; (6) Automatically adjust the illuminance curve according to the weather conditions of the day.

[0043] Configuration for home use: (1) A ceiling-mounted main light source panel (approximately 0.6m × 0.6m) is installed above the desk; (2) A desktop personal irradiation unit is placed on the desk and integrates PBM therapy function; (3) An environmental monitoring sensor is integrated into the desktop unit; (4) It connects to the smart home system via home WiFi; (5) It can be linked with a smartphone APP to set personalized lighting schemes; (6) It supports voice control, making it convenient to operate hands-free when studying.

[0044] Step 105: Perform photobiological regulation on the user according to the photobiological regulation parameters and preset wavelengths of red and near-infrared light.

[0045] Preset wavelengths of red and near-infrared light are specific wavelengths of light used for photobiological modulation therapy. The wavelength range of red light is 630–680 nm, and the wavelength range of near-infrared light is 810–850 nm. Light in this wavelength range can act on the retina and choroid, promote the release of dopamine in the retina, improve choroidal blood flow, and thus achieve the effect of inhibiting axial elongation and preventing myopia.

[0046] Photobiological modulation is a non-invasive treatment for myopia prevention and control. It involves irradiating the user's eyes with low-energy light of a specific wavelength, power, and dose, and using photobiochemical effects to achieve myopia prevention, relief of eye fatigue, and improvement of accommodative spasm. It is a core intervention method that replaces some of the protective effects of outdoor light.

[0047] First, the system determines the timing of treatment and automatically selects the optimal treatment time, usually once in the morning and once in the evening. When the user is in a high compensation level, an additional treatment will be added in the evening. At the same time, the system avoids high-intensity red light exposure before bedtime to avoid affecting the user's melatonin secretion and sleep quality.

[0048] Once the treatment timing is determined, the system activates the desktop or head-mounted photobiological modulation therapy unit. According to the photobiological modulation parameters determined in step three, it outputs red light and near-infrared light of preset wavelengths. The red light wavelength is controlled at 630–680nm, and the near-infrared light wavelength is controlled at 810–850nm. The power density is set according to the value corresponding to the compensation level, and the irradiation distance is controlled at 30 to 50cm to ensure that the light can be accurately aimed at the user's eyes to exert a therapeutic effect.

[0049] During treatment, the system implements strict dosage control and safety protection. It keeps track of the treatment time according to the set duration and automatically shuts down the treatment unit when the treatment time expires. At the same time, it accumulates the daily treatment dose in real time to ensure that it does not exceed the maximum daily dose limit. If the treatment unit is detected to be overheating, running beyond its time limit, or if the user's eyes are obstructed, an alarm signal will be issued immediately and the treatment will be stopped to ensure the user's safety.

[0050] After treatment, the system will automatically record relevant information about the treatment, including treatment time, power density, treatment duration, and cumulative dose. At the same time, it will synchronize this data to the user's APP (Application) to update the completion rate of light compensation for the day, so that users, parents or doctors can check the treatment status and form a complete treatment record.

[0051] In practice, the PBM treatment module is integrated into a desktop personal irradiation unit with an irradiation distance of 30-60cm.

[0052] This application can be applied to school myopia prevention and control projects and family myopia management. The wearable monitoring device uses low-power sensors, making it cost-effective and suitable for large-scale deployment. The system uses a mobile app to visualize data and send reminders, facilitating parental supervision. This system can be integrated with school outdoor activity time policies to form a complete light intervention system.

[0053] Meanwhile, this application has clear industrial applicability and broad market prospects. In terms of technical implementation, multi-channel LED lighting technology and high color rendering index (CRI) light source design are quite mature. High-power LED chips and precision driving circuits can be obtained from professional suppliers, and system integration can be completed by lighting fixture manufacturers or medical device companies. In terms of market application, this application can target three major markets: homes, schools, and offices. The home market primarily targets families with myopic children, positioning the product as a combination of healthy lighting and myopia prevention. The school market targets schools that prioritize students' vision health, serving as a classroom lighting upgrade solution. The office market targets companies concerned with employee health, combining healthy lighting with improved work efficiency. It can integrate the concept of myopia prevention into the daily lighting environment, offering advantages such as ease of use and subtle influence, with promising market acceptance.

[0054] This application embodiment determines the effective outdoor time and light compensation level by collecting light exposure data, and then determines the simulated light compensation parameters and photobiological adjustment parameters. By outputting artificial light that simulates the characteristics of outdoor natural light, and emitting preset wavelength red light and near-infrared light, the user is subjected to PBM adjustment, realizing the organic integration of comprehensive outdoor light environment simulation and photobiological adjustment, thereby achieving the goal of providing a more complete solution for myopia prevention and control.

[0055] In one implementation of this application, step 101 may include sub-steps A1 to A3.

[0056] Sub-step A1: Collect the light exposure data corresponding to the user, the light exposure data including: light intensity.

[0057] In this embodiment, the wearable light sensor worn by the user and the ambient light sensor in the user's environment can be activated to enter a real-time acquisition mode. The mode focuses on collecting light intensity data of the user's environment and simultaneously collects the timestamp corresponding to each piece of light intensity data to ensure that each piece of light intensity data can accurately correspond to the specific time period, thus ensuring the accuracy of subsequent time period determination.

[0058] During the data acquisition process, the sensor must be kept in normal working order to avoid situations that may affect the acquisition accuracy, such as obstruction, collision, or direct sunlight. The acquisition frequency is set to one frame per minute to ensure both the continuity and timeliness of data acquisition and to avoid data redundancy.

[0059] After the data collection is completed, the light intensity data and corresponding timestamps are temporarily stored locally on the device and simultaneously backed up to the cloud for subsequent data retrieval, verification and processing. This data collection focuses only on the core parameter of light intensity and does not require additional collection of auxiliary parameters such as spectral distribution, light location, and ultraviolet exposure. The key is to ensure the accuracy and completeness of the light intensity data and to eliminate abnormal interference data that occurs during the collection process.

[0060] Sub-step A2: Determine the time period when the light intensity is greater than the first light intensity threshold as the outdoor time period.

[0061] The first light intensity threshold is a preset threshold value for light intensity used to determine outdoor time periods. It is the core light index that distinguishes between outdoor and indoor environments. The typical preset value is 1000 lux. When the light intensity exceeds this threshold, it is determined to be the corresponding outdoor light state.

[0062] Outdoor time refers to the continuous or discrete time period when the light intensity of the user's environment is greater than the first light intensity threshold. It is the basis for statistically valid outdoor time, and only light intensity is used as the core criterion. There is no need to combine it with other scene judgment conditions.

[0063] First, the system's preset first light intensity threshold (typically 1000 lux) is called to clarify the standard for judging light intensity during outdoor periods; then, all light intensity data and corresponding timestamps collected in sub-step A1 are extracted, and the data are sorted and arranged in chronological order to ensure the temporal continuity of the data.

[0064] Then, the relationship between the light intensity at each time point and the first light intensity threshold is compared one by one. If the light intensity in a certain continuous time period is continuously greater than the first light intensity threshold, the complete time period is marked as a continuous outdoor time period, and its start and end times are recorded.

[0065] If there are discrete instances where the light intensity at a single time point exceeds the threshold, and the light intensity at adjacent time points before and after that time point also exceeds the threshold, then that single time point is merged with the adjacent time period into a continuous outdoor time period.

[0066] If the light intensity at a single time point is greater than the threshold, but the light intensity at the adjacent time points before and after it is lower than the threshold, and the duration of the single time point is less than 1 minute, it is determined to be interference data and will not be marked as an outdoor time period.

[0067] After the above screening, comparison and merging process, all time periods with light intensity greater than the first light intensity threshold were finally selected and uniformly determined as outdoor time periods. The start and end times of each outdoor time period were fully recorded to prepare for subsequent duration statistics.

[0068] Sub-step A3: Calculate the total duration of the outdoor time period corresponding to the user to obtain the user's effective outdoor time.

[0069] First, extract all outdoor time periods determined in sub-step A2, and calculate the duration of each outdoor time period one by one. The calculation method is to subtract the start time from the end time of each outdoor time period to obtain the specific duration of a single outdoor time period.

[0070] Then, the durations of all individual outdoor time periods are summed up. During the summation process, abnormal time periods are checked and removed, such as interference periods lasting less than 1 minute or incorrectly marked time periods, to ensure the accuracy of the statistical results.

[0071] After the total duration is accumulated, the resulting total duration is the user's effective outdoor time for the day. This effective outdoor time is stored in the system database and simultaneously synchronized to the user's APP. It serves as the core basis for subsequent related lighting assessments and gap calculations. At the same time, the completion time of this duration statistics is recorded to form a complete statistical record, which is convenient for subsequent data traceability, verification, and review.

[0072] This embodiment of the application, through the orderly execution of sub-steps A1 to A3, focuses solely on the collection of core parameters of light intensity. Using the first light intensity threshold as a clear judgment standard, it accurately filters outdoor time periods and counts effective outdoor time, simplifying the determination process of effective outdoor time, reducing redundant data collection, improving data processing efficiency and judgment accuracy, and enabling the rapid and reliable acquisition of core indicators of user outdoor light exposure. This provides accurate and effective data support for subsequent determination of insufficient light and the formulation of compensation plans.

[0073] In one implementation of this application, step 102 may include sub-steps B1 to B5.

[0074] Sub-step B1: Calculate the difference between the target effective outdoor time and the effective outdoor time to obtain the time gap.

[0075] In this embodiment, the time gap refers to the difference between the target effective outdoor time and the user's actual effective outdoor time. It is a core quantitative indicator for determining the degree of insufficient light and the level of light compensation. The difference is non-negative. If the difference is 0, it means there is no insufficient light and no compensation is needed.

[0076] The system calls the preset target effective outdoor time (the preset value can be 120 minutes per day, which can be customized by the doctor), and at the same time extracts the actual effective outdoor time of the user that has been statistically obtained, to ensure that the statistical dimensions of the two time parameters are consistent (both are the cumulative duration of the same natural day, and the unit is uniformly minutes).

[0077] The difference is then calculated by subtracting the user's actual effective outdoor time from the target effective outdoor time, and the resulting difference is the time gap.

[0078] If the calculation result is negative, the time gap will be automatically corrected to 0, because the time gap is only used to characterize the degree of insufficient light and there is no negative gap.

[0079] After the calculation is completed, the time gap is stored in the system database, and user information and valid outdoor time data of the day are synchronized and linked. This serves as the core basis for subsequent determination of the light compensation level. At the same time, the calculation time is recorded to facilitate subsequent data traceability and verification.

[0080] Sub-step B2: When the time gap is less than the first time threshold, determine that the illumination compensation level is a level that does not require compensation.

[0081] The first time threshold refers to the critical time value preset by the system to determine whether illumination compensation is needed. It is the boundary that distinguishes between "no compensation needed" and "compensation needed". In this example, the first time threshold can be 30 minutes.

[0082] The system calls the preset first time threshold (the preset value can be 30 minutes), compares the time gap calculated in the first step with the first time threshold. If the time gap is less than the first time threshold, it means that the user's effective outdoor time on that day is close to the target value, the degree of insufficient light is very mild, and no light compensation or photobiological regulation treatment is required.

[0083] At this point, the system automatically determines that the lighting compensation level is no longer required, generates a judgment record, clarifies the judgment basis (specific time gap value, first time threshold), and synchronizes it to the user's APP to inform the user that the lighting is sufficient on that day and no compensation is needed. At the same time, the judgment result is stored in the system for subsequent data statistics and review.

[0084] Sub-step B3: When the time gap is greater than or equal to the first time threshold and less than the second time threshold, determine the illumination compensation level as the first compensation level.

[0085] The second time threshold refers to a system-preset critical time value used to distinguish different compensation levels, falling between the first and third time thresholds. In this example, the first time threshold can be 60 minutes, used to differentiate between the first and second compensation levels.

[0086] The first compensation level refers to the basic compensation level among the illumination compensation levels. It has the lowest compensation intensity and corresponds to a time gap between the first and second time thresholds, which is lower than the second and third compensation levels.

[0087] The system calls the first and second preset time thresholds (preset values ​​are 30 minutes and 60 minutes respectively) to confirm that the two thresholds satisfy the relationship that the first time threshold < the second time threshold. Then, the time gap is compared with the two thresholds. If the first time threshold ≤ time gap < second time threshold, it means that the user has a slight lack of light on that day and basic intensity compensation is required.

[0088] At this point, the system automatically determines the illumination compensation level to be the first compensation level (lowest compensation intensity), generates a judgment record, clarifies the time gap range, corresponding threshold and compensation level, and synchronizes it to the system control module. This provides a basis for subsequently matching the photobiological adjustment parameters and simulated light compensation parameters corresponding to the first compensation level. At the same time, it is synchronized to the user's APP to inform the user that basic compensation is required.

[0089] Sub-step B4: When the time gap is greater than or equal to the second time threshold and less than the third time threshold, determine the illumination compensation level as the second compensation level.

[0090] The third time threshold is a system-preset critical time value used to distinguish between higher-level compensation and lower-level compensation; it serves as the boundary for determining the highest compensation level. In this example, the third time threshold can be 90 minutes, used to differentiate between the second and third compensation levels. It also satisfies the condition that the first time threshold < the second time threshold < the third time threshold.

[0091] The second compensation level refers to the moderate compensation level in the illumination compensation level, with the compensation intensity between the first and third compensation levels, corresponding to the time gap being between the second and third time thresholds.

[0092] The system calls the preset second and third time thresholds (preset values ​​can be 60 minutes and 90 minutes respectively) to confirm that the two thresholds satisfy the relationship of second time threshold < third time threshold. The time gap is compared with the two thresholds. If the condition is second time threshold ≤ time gap < third time threshold, it indicates that the user has moderate insufficient light on that day and needs moderate-intensity compensation. At this time, the system automatically determines the light compensation level to be the second compensation level (compensation intensity between the first and third compensation levels), generates a judgment record, clarifies the time gap range, corresponding threshold, and compensation level, and synchronizes it to the system control module for matching moderate-intensity compensation parameters. Simultaneously, it synchronizes to the user's APP to inform the user that moderate compensation is required.

[0093] Sub-step B5: When the time gap is greater than or equal to the third time threshold, determine the illumination compensation level as the third compensation level; The third compensation level refers to the highest compensation level among the illumination compensation levels. It has the highest compensation intensity and corresponds to a time gap that is not lower than the third time threshold. It is higher than the first compensation level and the second compensation level.

[0094] The system calls upon a preset third time threshold (which can be 90 minutes) and compares the time gap with this threshold. If the time gap is greater than or equal to the third time threshold, it indicates that the user has severe insufficient light exposure that day and requires the highest intensity compensation. At this point, the system automatically determines the light compensation level to be the third compensation level (highest compensation intensity), generates a judgment record, clearly stating the judgment criteria (specific time gap value, third time threshold), and synchronizes it to the system control module. This provides a basis for subsequently matching the highest intensity compensation parameters. Simultaneously, it synchronizes with the user's app, informing the user that high-intensity compensation is required and reminding them to complete the compensation treatment on time.

[0095] This application calculates the time gap by precisely measuring the difference between the target effective outdoor time and the actual effective outdoor time. Using three gradient thresholds as the judgment criteria, it clearly divides four light compensation levels. The judgment logic is simple and the quantification is accurate. It can differentiate the compensation level according to the degree of insufficient light, providing a clear and reliable basis for matching the corresponding intensity compensation scheme. This improves the pertinence and rationality of light compensation. At the same time, the judgment process is completed automatically without human intervention, balancing efficiency and accuracy, and providing solid technical support for the light compensation link in myopia prevention and control.

[0096] In one implementation of this application, step 103 may include sub-step C1 and sub-step C2.

[0097] Sub-step C1: Determine the corresponding spectral ratio parameter and illuminance adjustment parameter according to the illumination compensation level; wherein, the spectral ratio parameter is used to determine the power ratio of the multi-channel light source so that the spectrum of the output artificial light is consistent with the outdoor natural light; the illuminance adjustment parameter is used to control the output illuminance of the artificial light.

[0098] In this embodiment, the spectral ratio parameter is used to determine the power distribution ratio of each channel of the multi-channel light source. Its core function is to adjust the power ratio of the multi-channel light source so that the output artificial light spectrum is consistent with the spectral distribution of outdoor natural light, ensuring that the spectral characteristics of the simulated light match outdoor light and playing a role in myopia protection.

[0099] Illuminance adjustment parameters are used to control the output illuminance of artificial light. They can be dynamically adjusted according to the illuminance compensation level to determine the brightness level of simulated outdoor natural light and ensure that the illuminance of the compensated light meets the requirements of the corresponding compensation level.

[0100] A multi-channel light source is an LED light source array composed of multiple independent wavelength channels. By adjusting the power ratio of each channel, it can achieve full-spectrum output, simulating the spectral characteristics of outdoor natural light. It is the core hardware for outputting simulated artificial light.

[0101] The system calls the light compensation level (no compensation, first compensation level, second compensation level, third compensation level) that has been determined by the system. The system has pre-stored the corresponding mapping relationship between different light compensation levels and spectral ratio parameters and illuminance adjustment parameters, and the mapping relationship is based on the preset spectral distribution and illuminance characteristics of outdoor natural light.

[0102] For applications requiring no compensation level, the spectral ratio parameter is set to the standard indoor light ratio, and the illuminance adjustment parameter corresponds to the standard indoor illuminance (300-500 lux), eliminating the need to simulate outdoor natural light.

[0103] For the first compensation level (basic compensation), the spectral ratio parameter is set to be close to the basic ratio of outdoor natural light. The power of each channel of the multi-channel light source is allocated according to the preset ratio to ensure that the spectrum is consistent with outdoor natural light. The illuminance adjustment parameter corresponds to an illuminance level of 2000 lux or higher.

[0104] For the second compensation level (medium compensation), the spectral ratio parameter maintains the outdoor natural light ratio, and the power of each channel is finely adjusted to make the spectral matching degree higher. The illuminance adjustment parameter corresponds to an illuminance level of 3000 lux or higher.

[0105] For the third compensation level (height compensation), the spectral ratio parameters are precisely matched to the outdoor natural light spectrum, the power of each channel of the multi-channel light source is precisely allocated according to the outdoor natural light spectrum distribution, and the illuminance adjustment parameters correspond to an outdoor equivalent illuminance level of 5000 lux or more.

[0106] After determining the spectral ratio parameters, they are sent to the multi-channel light source control module to control the power output of each channel light source, ensuring that the artificial light spectrum is consistent with the outdoor natural light.

[0107] After determining the illuminance adjustment parameters, they are simultaneously sent to the lighting control module to control the artificial light output illuminance to reach the corresponding standard. At the same time, two sets of parameters and corresponding compensation levels are recorded for easy traceability and adjustment in the future.

[0108] Sub-step C2: Determine the photobiological regulation parameters based on the light compensation level, the preset base power density, and the base irradiation duration.

[0109] The baseline power density is a preset power parameter for photobiological conditioning therapy. It is a fixed value determined based on myopia control needs and safety of use. The typical preset value is 20mW / cm², which serves as the basis for adjusting the power density for different compensation levels.

[0110] The baseline irradiation duration is a preset parameter for photobiological conditioning therapy. It is a fixed duration to ensure the basic treatment effect. The typical preset value is 3-5 minutes, which serves as the basis for adjusting the irradiation duration for different compensation levels.

[0111] Photobiological regulation parameters are a set of parameters used to control the output of photobiological regulation therapy equipment, including irradiation wavelength, power density, irradiation duration, etc. They are determined by the light compensation level, base power density, and base irradiation duration, and directly determine the treatment effect and safety.

[0112] The system calls up the preset base power density (preset value 20mW / cm²) and base irradiation duration (typical value 3-5 minutes), and extracts the determined light compensation level. According to the preset level adjustment rules, the base parameters are dynamically adjusted to determine the final photobiological regulation parameters.

[0113] If the light compensation level is set to no compensation, the photobiological regulation parameters are set to off, or only the basic health care dose is maintained (not exceeding the basic power density and basic duration), and no additional treatment is performed.

[0114] If it is the first compensation level, multiply the base power density by 1.2 and increase the base irradiation time by 1 minute. Use this as the photobiological adjustment parameter for this level to ensure the base compensation effect.

[0115] If it is the second compensation level, the base power density is multiplied by 1.5, the base irradiation time is increased by 2 minutes, and the compensation intensity is increased.

[0116] If it is the third compensation level, multiply the base power density by 1.8, increase the base irradiation duration by 3 minutes, and increase the parameter settings for the evening additional treatment (such as adding an additional treatment, maintaining the adjusted power density and duration).

[0117] During the adjustment process, the power density is strictly controlled within the safe range of 8-50 mW / cm², and the total daily treatment dose does not exceed twice the baseline dose to ensure treatment safety. After determining the photobiological regulation parameters, they are stored in the system control module and synchronously linked to the light compensation level to provide precise parameter support for the initiation and execution of subsequent photobiological regulation therapy. At the same time, the basis and results of parameter adjustments are recorded for subsequent verification and optimization.

[0118] This embodiment of the application achieves precise matching between light compensation levels and compensation parameters through the execution of sub-steps C1 and C2. Sub-step C1 ensures that the simulated artificial light spectrum and illuminance at different compensation levels closely match outdoor natural light, guaranteeing the effectiveness of environmental compensation. Sub-step C2 dynamically adjusts photobiological regulation parameters based on the compensation level, balancing therapeutic efficacy and safety. The entire process is automated, with precise parameter matching and concise logic, effectively connecting to the initial compensation level determination stage. This provides clear and reliable parameter support for subsequent simulated light output and photobiological regulation therapy, enhancing the targeting and effectiveness of light compensation and further improving the light compensation system for myopia prevention and control.

[0119] In one implementation of this application, the above sub-step C2 may include: sub-steps D1 to D3.

[0120] Sub-step D1: When the illumination compensation level is the first compensation level, determine the power density parameter as the base power density multiplied by the first coefficient, and the illumination duration parameter as the sum of the base illumination duration and the first duration increment.

[0121] In this embodiment, the photobiological regulation parameters may include power density parameters and irradiation duration parameters. The power density parameter is a core component of the photobiological regulation parameters, used to control the power density of the light output from the photobiological regulation therapy device, directly affecting the treatment intensity and effect, and is calculated from the base power density and corresponding coefficient. The irradiation duration parameter is another core component of the photobiological regulation parameters, used to control the duration of a single irradiation session in photobiological regulation therapy, obtained by summing the base irradiation duration and the corresponding duration increment, determining the cumulative dose of a single treatment session.

[0122] The first coefficient refers to the power density adjustment coefficient preset by the system corresponding to the first compensation level. It is used to calculate the power density parameter of the first compensation level. The typical preset value is 1.2, which is less than the second and third coefficients.

[0123] The first duration increment refers to the system-preset increase in irradiation duration corresponding to the first compensation level, used to calculate the irradiation duration parameter for the first compensation level. The typical preset value is 1 minute, which is less than the second and third duration increments.

[0124] The system calls upon the first compensation level already determined by the system, and simultaneously extracts the system's preset base power density, first coefficient, base irradiation duration, and first duration increment, confirming that the first coefficient is less than the second and third coefficients, and the first duration increment is less than the second and third duration increments.

[0125] Subsequently, parameter calculations are performed. The power density parameter is calculated by multiplying the base power density (typical value 20mW / cm²) by the first coefficient (typical value 1.2) to obtain the power density parameter corresponding to the first compensation level. The irradiation duration parameter is calculated by summing the base irradiation duration (typical value 3-5 minutes) and the first duration increment (typical value 1 minute) to obtain the irradiation duration parameter corresponding to the first compensation level.

[0126] After the calculation is completed, the power density parameter is verified to ensure that it is within the safe range of 8-50mW / cm². After the verification is passed, the power density parameter and irradiation duration parameter corresponding to the level are stored in the system control module as the basis for the execution of the first compensation level photobiological regulation therapy. At the same time, the calculation process and results are recorded for easy traceability.

[0127] Sub-step D2: When the illumination compensation level is the second compensation level, determine the power density parameter as the base power density multiplied by the second coefficient, and the illumination duration parameter as the sum of the base illumination duration and the second duration increment.

[0128] The second coefficient refers to the power density adjustment coefficient preset by the system corresponding to the second compensation level. It is used to calculate the power density parameters of the second compensation level. The typical preset value is 1.5, which is between the first coefficient and the third coefficient.

[0129] The second duration increment refers to the system-preset increase in irradiation duration corresponding to the second compensation level. It is used to calculate the irradiation duration parameter for the second compensation level. The typical preset value is 2 minutes, which is between the first duration increment and the third duration increment.

[0130] The system calls up the second compensation level that has been determined, extracts the preset base power density, second coefficient, base irradiation duration and second duration increment, and confirms that the second coefficient is between the first coefficient and the third coefficient, and the second duration increment is between the first duration increment and the third duration increment.

[0131] Then, the parameters are calculated: power density parameter = base power density × second coefficient (typical value 1.5), irradiation duration parameter = base irradiation duration + second duration increment (typical value 2 minutes).

[0132] The calculated power density parameters are verified to ensure they are within the safe range of 8-50 mW / cm². After verification, the two sets of parameters corresponding to this level are stored and synchronously associated with the second compensation level to provide a basis for subsequent treatment and to record relevant calculation information.

[0133] Sub-step D3: When the illumination compensation level is the third compensation level, determine the power density parameter as the base power density multiplied by the third coefficient, and the illumination duration parameter as the sum of the base illumination duration and the third duration increment.

[0134] The third coefficient refers to the power density adjustment coefficient preset by the system corresponding to the third compensation level. It is used to calculate the power density parameter of the third compensation level. The typical preset value is 1.8, which is greater than the first coefficient and the second coefficient. It also satisfies the condition that the first coefficient < the second coefficient < the third coefficient.

[0135] The third duration increment refers to the system-preset increase in irradiation duration corresponding to the third compensation level. It is used to calculate the irradiation duration parameter for the third compensation level. The typical preset value is 3 minutes, which is greater than the first duration increment and the second duration increment; and satisfies the condition that the first duration increment < the second duration increment < the third duration increment.

[0136] The system calls up the third compensation level that has been determined, extracts the preset base power density, third coefficient, base irradiation duration and third duration increment, and confirms that the third coefficient is greater than the first coefficient and the second coefficient, and the third duration increment is greater than the first duration increment and the second duration increment.

[0137] Next, parameter calculations are performed: power density parameter = base power density × third coefficient (typical value 1.8), irradiation duration parameter = base irradiation duration + third duration increment (typical value 3 minutes). The power density parameter undergoes a safety check to ensure it does not exceed the upper limit of 50mW / cm². Simultaneously, considering the requirement that the total daily dose does not exceed twice the base dose, the parameter's rationality is further verified. After successful verification, the two sets of parameters corresponding to this level are stored, associated with the third compensation level, and synchronized to the treatment control module. The calculation process and parameter results are recorded to ensure the accuracy and safety of the treatment parameters.

[0138] This application's embodiments accurately calculate the power density and irradiation duration parameters of photobiological modulation by matching the corresponding coefficients and duration increments according to the light compensation level. This achieves a gradient correspondence between the compensation level and the treatment parameters, and the gradient settings of the coefficients and increments are tailored to the degree of insufficient light, ensuring that the treatment intensity matches the gap. At the same time, safety verification ensures the safety of treatment. The entire process is logically clear and computationally accurate, providing scientific and reliable parameter support for photobiological modulation therapy and improving the pertinence and effectiveness of myopia prevention and control treatment.

[0139] In one implementation of this application, step 104 may include sub-step E1 and sub-step E2.

[0140] Sub-step E1: Adjust the output illuminance of artificial light according to the illuminance adjustment parameter in the simulated light compensation parameters and a preset curve; wherein, the preset curve includes multiple modes, and different modes correspond to different illuminance change patterns.

[0141] In this embodiment, the preset curve refers to the curve set in advance by the system to adjust the change of artificial light output illuminance. It includes a variety of different modes, each corresponding to a specific illuminance change law. The core function is to simulate the illuminance change characteristics of outdoor natural light in different weather and at different times.

[0142] A mode refers to a specific category of a preset curve. Different modes correspond to different illuminance variation patterns. Typical modes include sunny mode, cloudy mode, and custom mode, which are adapted to different scenarios and user needs.

[0143] Illuminance variation information refers to the rules governing the change of artificial light output illuminance over time in each mode, including the initial illuminance value, peak value, rate of change, and duration of maintenance, which are used to accurately simulate the dynamic illuminance changes of outdoor natural light.

[0144] First, the illuminance adjustment parameters in the simulated light compensation parameters determined in sub-step C1 are invoked to clarify the target illuminance level that artificial light needs to achieve. Simultaneously, the system's preset curves and corresponding modes are extracted to confirm the illuminance change pattern information for each mode (e.g., sunny day mode: illuminance gradually increases from the target lower limit to the peak value within a set time period, maintains this level for a period, and then gradually decreases; cloudy day mode: the peak illuminance is lower than in sunny day mode, and the rate of change is more gradual; custom mode: executes according to the user-preset illuminance change rules).

[0145] The system then automatically selects the corresponding preset curve mode based on the current usage scenario, weather conditions, or user presets. If the user does not make any custom settings, the system will default to the sunny mode.

[0146] Based on the illuminance change pattern information corresponding to the selected mode and combined with the illuminance adjustment parameters, the output illuminance of artificial light is gradually adjusted to ensure that the illuminance change conforms to the preset curve, thereby simulating the dynamic illuminance of outdoor natural light. During the adjustment process, the actual output illuminance of artificial light is monitored in real time and compared with the theoretical illuminance of the preset curve. If a deviation occurs, it is fine-tuned in time to ensure that the output illuminance accurately matches the preset curve and illuminance adjustment parameters. At the same time, the illuminance data and the selected mode during the adjustment process are recorded for subsequent traceability and adjustment.

[0147] In the specific implementation, a dynamic illuminance control module can be set up, which can simulate the natural changes in outdoor light intensity throughout the day. The system has a variety of preset illuminance curves: (1) Sunny mode: The illuminance gradually increases from 500 lux to 30,000 lux within 2 hours after sunrise, maintains high illuminance around noon, and gradually decreases to 500 lux within 2 hours before sunset. (2) Cloudy mode: The maximum illuminance is limited to 10,000 lux, and the change curve is more gradual. (3) Custom mode: Users can set personalized curves according to local latitude and longitude and season. The illuminance adjustment adopts a combination of PWM dimming and current dimming to ensure no flicker (flicker index <0.02) across the entire range. When the illuminance is high, the system adopts a large-area diffuse light source design to avoid direct glare.

[0148] Sub-step E2: Adjust the illuminance of the artificial light using a preset dimming method so that the flicker index of the artificial light is less than the first flicker index threshold.

[0149] Preset dimming mode refers to the control mode that the system pre-sets to adjust the artificial light intensity. The core purpose is to control the flicker index of artificial light while adjusting the illuminance to ensure visual comfort. Typically, it is a combination of PWM dimming and current dimming.

[0150] The flicker index is a quantitative indicator used to characterize the degree of flicker in artificial light. The smaller the value, the less noticeable the flicker and the higher the visual comfort. It is an important indicator for measuring the quality of artificial light.

[0151] The first flicker index threshold is a system-preset critical value for flicker index that ensures visual safety and comfort. The flicker index of artificial light must be less than this threshold, and the preset value can be 0.02.

[0152] The system calls the preset dimming mode (which can be a combination of PWM dimming and current dimming) to define the adjustment range of the dimming parameters, and extracts the first flicker index threshold (typically 0.02) as the criterion for flicker control.

[0153] While adjusting the artificial light output illuminance in sub-step E1, a preset dimming mode is activated. By adjusting the PWM duty cycle and current, the artificial light illuminance is smoothly adjusted to avoid flickering caused by dimming.

[0154] During the adjustment process, the flicker index of the artificial light is detected in real time. The light signal is collected through the flicker detection module, the current flicker index value is calculated, and it is compared with the first flicker index threshold. If the flicker index is detected to be greater than or equal to the first flicker index threshold, the dimming parameters are immediately adjusted (such as optimizing the PWM duty cycle and stabilizing the current output) to reduce the flicker index.

[0155] If the flicker index is less than the first flicker index threshold, maintain the current dimming parameters to ensure that the artificial light does not flicker significantly during the illuminance adjustment process.

[0156] After adjustment, the flicker index is tested again to confirm that it is consistently below the first flicker index threshold, ensuring user visual comfort and preventing eye damage from flicker. At the same time, the dimming method and flicker index test results are recorded to form a complete adjustment record.

[0157] This embodiment of the application achieves precise adjustment and flicker control of artificial light output illuminance through the execution of sub-steps E1 and E2. Sub-step E1 combines multiple modes with preset curves to make the changes in artificial light illuminance closely resemble natural outdoor light, enhancing the realism of environmental compensation. Sub-step E2 controls the flicker index through preset dimming methods, ensuring visual comfort and safety. The entire process is logically rigorous and precisely adjusted, ensuring both the compensation effect of simulated light and avoiding eye damage from flicker, thus providing a guarantee for the effective implementation of subsequent light compensation and further improving the light simulation system for myopia prevention and control.

[0158] In one implementation of this application, before step 104 above, steps F1 to F3 may also be included.

[0159] Step F1: Monitor the ambient light intensity of the user's environment in real time.

[0160] In this embodiment, ambient light intensity refers to the luminous flux received per unit area in the user's real-time physical environment. It is a core indicator characterizing ambient light brightness, and its unit is lux. It is used to determine whether the ambient light is sufficient and provides a basis for determining the specified light compensation scene.

[0161] It can activate the wearable light sensor worn by the user and the fixed ambient light sensor in the user's environment to enter real-time monitoring mode, with the monitoring frequency set to once per minute to ensure timely capture of changes in ambient light intensity.

[0162] The sensor collects real-time light flux data of the user's surrounding environment and converts it into ambient light intensity (unit: lux). During the collection process, interference such as sensor obstruction and direct strong light is avoided to ensure the accuracy of the monitoring data.

[0163] The collected ambient light intensity data is transmitted to the system control module in real time and stored synchronously in the local database. It is associated with timestamps and user location information to provide real-time data support for scene determination in subsequent steps F2 and F3. At the same time, the data is updated in real time to ensure the continuity and timeliness of monitoring.

[0164] Step F2: When the ambient light intensity is less than the second light intensity threshold and the user is in an indoor environment, determine that the user is in a specified light compensation scene.

[0165] The second light intensity threshold is a system-preset critical value for light intensity used to assist in determining the light compensation scene. It is different from the first light intensity threshold. The preset value can be 300 lux, which is used to determine whether the indoor ambient light is insufficient and trigger the light compensation scene determination.

[0166] The system calls the second light intensity threshold preset by the system (typical value is 300 lux), extracts the current ambient light intensity monitored in real time in step F1, compares the two, and determines whether the ambient light intensity is less than the second light intensity threshold.

[0167] Meanwhile, the system determines whether a user is in an indoor environment through multiple scene recognition methods, including indoor WiFi / Bluetooth positioning, human presence sensor detection, and environmental spectral feature analysis (there are differences between indoor artificial light and outdoor natural light spectra). If any one of the recognition conditions is met, the system determines that the user is in an indoor environment.

[0168] When both the ambient light intensity is less than the second light intensity threshold and the user is in an indoor environment, the system automatically determines that the user is in a designated light compensation scene, generates a scene determination record, clarifies the determination criteria (current ambient light intensity, second light intensity threshold, indoor environment determination result), and synchronizes it to the system control module to trigger subsequent simulated light compensation and photobiological regulation processes. At the same time, it synchronizes it to the user's APP to inform the user that they have entered the light compensation scene.

[0169] Step F2: When the user's effective outdoor time is less than the target effective outdoor time and the user is in an indoor environment, determine that the user is in a specified light compensation scene.

[0170] Indoor environments refer to enclosed or semi-enclosed non-outdoor spaces, typically including family studies, school classrooms, and offices. In contrast to outdoor environments, they can be accurately determined through scene recognition technology and are the core scene conditions for specifying light compensation scenes.

[0171] The system retrieves the user's effective outdoor time for the day and the system's preset target effective outdoor time, compares the two, and determines whether the effective outdoor time is less than the target effective outdoor time. If they are, it means that the user's daytime sunlight is insufficient and there is a need for compensation.

[0172] Simultaneously, using the same scene recognition method as step F2, the system determines whether the user is in an indoor environment, ensuring that the user is in a suitable scene for indoor light compensation. When both the user's effective outdoor time < the target effective outdoor time and the user being in an indoor environment are met, the system automatically determines that the user is in the designated light compensation scene, generates a scene determination record, clarifies the determination criteria (effective outdoor time, target effective outdoor time, indoor environment determination result), synchronizes it to the system control module, and initiates the subsequent compensation process. If the user is already in the compensation scene, the compensation state is maintained; if it has not been initiated, it is initiated immediately to ensure timely compensation.

[0173] This embodiment of the application achieves accurate identification of specified light compensation scenarios by monitoring ambient light intensity in real time through step F1, combined with the dual judgment conditions in steps F2 and F3. It considers both insufficient indoor lighting and the core needs of users in low outdoor lighting conditions, avoiding scene misjudgment and compensation timing deviations. The entire judgment process is automated and highly real-time, quickly identifying scenarios requiring compensation and promptly triggering subsequent compensation processes. This ensures the targeted and timely nature of light compensation, providing precise scene support for the light compensation stage of myopia prevention and control, and improving the practicality and reliability of the entire light compensation system.

[0174] In one implementation of this application, before step 104 above, steps G1 and G2 may be included.

[0175] Step G1: Obtain the user's daily routine.

[0176] In this embodiment, the daily routine refers to the user's fixed schedule, which includes the user's wake-up time, sleep start time, and main activity periods (such as studying and resting). It is the core basis for adjusting the spectral ratio parameters to make the simulated light spectrum conform to the human body's biological clock rhythm.

[0177] In its implementation, the system offers multiple methods for obtaining daily routines to ensure data accuracy and convenience: First, users can manually input their routines via the app, filling in their wake-up time, sleep start time, and main daytime activity periods (e.g., waking up at 7:00 AM, falling asleep at 10:00 PM, and main activity periods from 8:00 AM to 6:00 PM). Users can also set different modes for weekdays and weekends. Second, the system can synchronously collect data from user-linked smart devices (e.g., smartwatches, mobile phones), automatically extracting sleep and activity timeline data to generate a daily routine. Third, the system automatically analyzes and generates personalized routine recommendations based on the user's historical usage data, which are then confirmed by the user as the final routine. After obtaining the routine, the system processes the data, extracts key time points (wake-up, sleep, peak activity times), stores it in the user's dedicated database, links it to user information, and allows users to modify and update it at any time, ensuring the routine matches the user's actual situation.

[0178] Step G2: Adjust the spectral ratio parameter in the simulated light compensation parameters according to the work and rest schedule.

[0179] The system retrieves the user's daily routine data from the first step, extracts key time points, and dynamically adjusts the spectral ratio parameters for different time periods based on the system's preset "routine-spectral ratio" mapping rules. This ensures that the simulated light spectrum closely matches the characteristics of the human biological clock and outdoor natural light during different time periods. The specific adjustment logic is as follows: During the user's wake-up time (e.g., 7:00-8:00), adjust the spectral ratio parameters, increasing the power proportion of the blue light channel to simulate natural outdoor morning light and help the user wake up quickly. During the main daytime activity periods (e.g., 8:00-18:00), maintain the spectral ratio parameters consistent with natural outdoor light to ensure compensation effectiveness while adapting to different light compensation levels. During the pre-sleep period (e.g., 20:00-22:00), adjust the spectral ratio parameters, decreasing the power proportion of the blue light channel and increasing the power proportion of the red and warm light channels to simulate natural outdoor evening light, avoiding blue light affecting the user's melatonin secretion and ensuring sleep quality. During the user's sleep period, turn off the simulated light output, and the spectral ratio parameters are temporarily ineffective.

[0180] During the adjustment process, the current illumination compensation level is synchronously linked to ensure that the adjusted spectral ratio parameters match the illuminance adjustment parameters and do not affect the compensation effect of the simulated light. After the adjustment is completed, the new spectral ratio parameters are sent to the multi-channel light source control module to perform spectral adjustment. At the same time, the adjustment basis (work and rest time, compensation level) and the adjusted parameters are recorded for subsequent traceability and optimization.

[0181] In practical applications, a biological rhythm regulation module can be set up, which optimizes the lighting scheme according to the user's circadian rhythm: (1) The user's daily routine is set through the APP, and the system calculates the best lighting curve accordingly; (2) The proportion of blue light is increased in the morning to help wake up and improve alertness; (3) The proportion of blue light is automatically reduced in the evening and at night to avoid affecting melatonin secretion and sleep; (4) It can be linked with smartphones or wearable devices to obtain the user's sleep data and dynamically adjust the lighting strategy; (5) A time zone adjustment mode is provided to help people adapt quickly after traveling across time zones.

[0182] This application's embodiments obtain the user's daily routine and dynamically adjust the spectral ratio parameters based on the human body's biological clock rhythm. This makes the simulated light compensation not only conform to the characteristics of outdoor natural light but also adapt to the user's individual routine. It ensures the effectiveness of light compensation while avoiding the impact of inappropriate spectra (such as blue light at night) on the user's sleep, thus improving user comfort and personalization. The entire process is highly automated, the routine data acquisition method is convenient, and the spectral adjustment is precise, further improving the rationality of simulated light compensation and making it more in line with the user's actual needs, thereby enhancing the humanization and practicality of the entire light compensation system.

[0183] Reference Figure 2 The diagram shows a schematic representation of a photobiological regulation device based on outdoor tracking, as provided in an embodiment of this application. Figure 2 As shown, the outdoor tracking-based photobiological regulation device 200 may include the following modules: The time determination module 210 is used to determine the user's effective outdoor time based on the collected user's light exposure data; The level determination module 220 is used to determine the user's light compensation level based on the effective outdoor time and the target effective outdoor time. The parameter determination module 230 is used to determine the photobiological adjustment parameters and the simulated light compensation parameters according to the light compensation level; The artificial light output module 240 is used to output artificial light that simulates the characteristics of outdoor natural light according to the simulated light compensation parameters when the user is in a specified light compensation scene. The photobiological regulation module 250 is used to perform photobiological regulation on the user based on the photobiological regulation parameters and preset wavelengths of red light and near-infrared light.

[0184] Optionally, the time determination module includes: The data acquisition unit is used to collect the light exposure data corresponding to the user, wherein the light exposure data includes: light intensity; A time period determination unit is used to determine the time period in which the light intensity is greater than a first light intensity threshold as an outdoor time period; The time acquisition unit is used to calculate the total duration of the outdoor time period corresponding to the user, and obtain the user's effective outdoor time.

[0185] Optionally, the level determination module includes: The gap acquisition unit is used to calculate the difference between the target effective outdoor time and the effective outdoor time to obtain the time gap; The first determining unit is configured to determine the illumination compensation level as a level that does not require compensation when the time gap is less than a first time threshold. The second determining unit is used to determine the illumination compensation level as the first compensation level when the time gap is greater than or equal to the first time threshold and less than the second time threshold. The third determining unit is used to determine the illumination compensation level as the second compensation level when the time gap is greater than or equal to the second time threshold and less than the third time threshold. The fourth determining unit is used to determine the illumination compensation level as the third compensation level when the time gap is greater than or equal to the third time threshold. Wherein, the first time threshold is less than the second time threshold, and the second time threshold is less than the third time threshold; The first compensation level is lower than the second compensation level, and the second compensation level is lower than the third compensation level.

[0186] Optionally, the parameter determination module includes: The first parameter determination unit is used to determine the corresponding spectral ratio parameter and illuminance adjustment parameter according to the illumination compensation level; wherein, the spectral ratio parameter is used to determine the power ratio of the multi-channel light source so that the spectrum of the output artificial light is consistent with the outdoor natural light; the illuminance adjustment parameter is used to control the output illuminance of the artificial light; The second parameter determination unit is used to determine the photobiological regulation parameters based on the light compensation level, the preset base power density, and the base irradiation duration.

[0187] Optionally, the photobiological regulation parameters include power density parameters and irradiation duration parameters; The second parameter determination unit includes: The first parameter determination subunit is used to determine the power density parameter as a base power density multiplied by a first coefficient when the illumination compensation level is the first compensation level, and the illumination duration parameter as the sum of the base illumination duration and the first duration increment. The second parameter determination subunit is used to determine the power density parameter as the base power density multiplied by a second coefficient when the illumination compensation level is the second compensation level, and the illumination duration parameter as the sum of the base illumination duration and the second duration increment. The third parameter determination subunit is used to determine the power density parameter as the base power density multiplied by the third coefficient when the illumination compensation level is the third compensation level, and the illumination duration parameter as the sum of the base illumination duration and the third duration increment. Wherein, the first coefficient is less than the second coefficient, the second coefficient is less than the third coefficient, the first duration increment is less than the second duration increment, and the second duration increment is less than the third duration increment.

[0188] Optionally, the artificial light output module includes: The first illuminance adjustment unit is used to adjust the output illuminance of artificial light according to the illuminance adjustment parameters in the simulated light compensation parameters and a preset curve; wherein, the preset curve includes multiple modes, and different modes correspond to different illuminance change patterns. The second illuminance adjustment unit is used to adjust the illuminance of the artificial light using a preset dimming method so that the flicker index of the artificial light is less than the first flicker index threshold.

[0189] Optionally, the device further includes: The light intensity monitoring module is used to monitor the ambient light intensity of the user's environment in real time. The first scene determination module is used to determine that the user is in a specified light compensation scene when the ambient light intensity is less than the second light intensity threshold and the user is in an indoor environment. The second scene determination module is used to determine that the user is in a specified light compensation scene when the user's effective outdoor time is less than the target effective outdoor time and the user is in an indoor environment.

[0190] Optionally, the device further includes: The information monitoring module is used to monitor the ambient light intensity and spectral distribution of the user's environment in real time. The parameter adjustment module is used to adjust the simulated light compensation parameters based on the monitored ambient light intensity and ambient spectral distribution. An illuminance adjustment module is used to adjust the output illuminance of the artificial light when the ambient light intensity changes; The spectral adjustment module is used to adjust the spectral ratio parameters of the artificial light when the environmental spectral distribution information does not meet expectations.

[0191] Optionally, the device further includes: The daily routine acquisition module is used to acquire the user's daily routine. The ratio parameter adjustment module is used to adjust the spectral ratio parameter in the simulated light compensation parameter according to the work and rest schedule.

[0192] This application embodiment determines the effective outdoor time and light compensation level by collecting light exposure data, and then determines the simulated light compensation parameters and photobiological adjustment parameters. By outputting artificial light that simulates the characteristics of outdoor natural light, and emitting preset wavelength red light and near-infrared light, the user is subjected to PBM adjustment, realizing the organic integration of comprehensive outdoor light environment simulation and photobiological adjustment, thereby achieving the goal of providing a more complete solution for myopia prevention and control.

[0193] This application also provides an electronic device, such as... Figure 3 As shown, it includes a processor 301, a communication interface 302, a memory 303, and a communication bus 304, wherein the processor 301, the communication interface 302, and the memory 303 communicate with each other through the communication bus 304. Memory 303 is used to store computer programs; When processor 301 executes a program stored in memory 303, it performs the following steps: The effective outdoor time of the user is determined based on the collected light exposure data of the user; The user's light compensation level is determined based on the effective outdoor time and the target effective outdoor time. Based on the light compensation level, determine the photobiological regulation parameters and the simulated light compensation parameters; When the user is in a specified light compensation scene, artificial light simulating the characteristics of outdoor natural light is output according to the simulated light compensation parameters. The user is subjected to photobiological regulation based on the aforementioned photobiological regulation parameters and preset wavelengths of red and near-infrared light.

[0194] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0195] The communication interface is used for communication between the aforementioned terminal and other devices.

[0196] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0197] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0198] In another embodiment provided in this application, a computer-readable storage medium is also provided, which stores instructions that, when executed on a computer, cause the computer to perform any of the photobiological modulation methods based on outdoor tracking described in the above embodiments.

[0199] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (SSD)).

[0200] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0201] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0202] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A photobiological regulation method based on outdoor tracking, characterized in that, include: The effective outdoor time of the user is determined based on the collected light exposure data of the user; The user's light compensation level is determined based on the effective outdoor time and the target effective outdoor time. Based on the light compensation level, determine the photobiological regulation parameters and the simulated light compensation parameters; When the user is in a specified light compensation scene, artificial light simulating the characteristics of outdoor natural light is output according to the simulated light compensation parameters. The user is subjected to photobiological regulation based on the aforementioned photobiological regulation parameters and preset wavelengths of red and near-infrared light.

2. The method according to claim 1, characterized in that, The step of determining the user's effective outdoor time based on the collected user's light exposure data includes: Collect the light exposure data corresponding to the user, the light exposure data including: light intensity; The time period when the light intensity is greater than the first light intensity threshold is defined as the outdoor time period; The total duration of the outdoor time period corresponding to the user is counted to obtain the user's effective outdoor time.

3. The method according to claim 1, characterized in that, Determining the user's light compensation level based on the effective outdoor time and the target effective outdoor time includes: The time gap is obtained by calculating the difference between the target effective outdoor time and the effective outdoor time. When the time gap is less than a first time threshold, the illumination compensation level is determined to be a level that does not require compensation. When the time gap is greater than or equal to the first time threshold and less than the second time threshold, the illumination compensation level is determined to be the first compensation level. When the time gap is greater than or equal to the second time threshold and less than the third time threshold, the illumination compensation level is determined to be the second compensation level; When the time gap is greater than or equal to the third time threshold, the illumination compensation level is determined to be the third compensation level; Wherein, the first time threshold is less than the second time threshold, and the second time threshold is less than the third time threshold; The first compensation level is lower than the second compensation level, and the second compensation level is lower than the third compensation level.

4. The method according to claim 1, characterized in that, The step of determining the photobiological regulation parameters and simulated light compensation parameters based on the light compensation level includes: Based on the illumination compensation level, the corresponding spectral ratio parameters and illuminance adjustment parameters are determined; wherein, the spectral ratio parameters are used to determine the power ratio of the multi-channel light source so that the spectrum of the output artificial light is consistent with that of outdoor natural light; the illuminance adjustment parameters are used to control the output illuminance of the artificial light. The photobiological regulation parameters are determined based on the light compensation level, the preset base power density, and the base irradiation duration.

5. The method according to claim 4, characterized in that, The photobiological regulation parameters include power density parameters and irradiation duration parameters; The determination of the photobiological regulation parameters based on the light compensation level, the pre-set base power density, and the base irradiation duration includes: When the illumination compensation level is the first compensation level, the power density parameter is determined by multiplying the base power density by a first coefficient, and the illumination duration parameter is the sum of the base illumination duration and the first duration increment. When the illumination compensation level is the second compensation level, the power density parameter is determined by multiplying the base power density by the second coefficient, and the irradiation duration parameter is the sum of the base irradiation duration and the second duration increment. When the illumination compensation level is the third compensation level, the power density parameter is determined by multiplying the base power density by the third coefficient, and the irradiation duration parameter is the sum of the base irradiation duration and the third duration increment. Wherein, the first coefficient is less than the second coefficient, the second coefficient is less than the third coefficient, the first duration increment is less than the second duration increment, and the second duration increment is less than the third duration increment.

6. The method according to claim 1, characterized in that, The step of outputting artificial light that simulates the characteristics of outdoor natural light based on the simulated light compensation parameters includes: Based on the illuminance adjustment parameters in the simulated light compensation parameters, the output illuminance of the artificial light is adjusted according to a preset curve; wherein, the preset curve includes multiple modes, and different modes correspond to different illuminance change patterns. The illuminance of the artificial light is adjusted using a preset dimming method so that the flicker index of the artificial light is less than a first flicker index threshold.

7. The method according to claim 1, characterized in that, Before outputting artificial light simulating the characteristics of outdoor natural light based on the simulated light compensation parameters, the method further includes: Real-time monitoring of ambient light intensity in the user's environment; When the ambient light intensity is less than the second light intensity threshold and the user is in an indoor environment, it is determined that the user is in a designated light compensation scene; or If the user's effective outdoor time is less than the target effective outdoor time, and the user is in an indoor environment, the user is determined to be in a specified light compensation scene.

8. The method according to claim 1, characterized in that, The method further includes: Real-time monitoring of ambient light intensity and spectral distribution information of the user's environment; Adjust the simulated light compensation parameters based on the monitored ambient light intensity and ambient spectral distribution; When the ambient light intensity changes, the output illuminance of the artificial light is adjusted; When the environmental spectral distribution information does not meet expectations, the spectral ratio parameters of the artificial light are adjusted.

9. The method according to claim 1, characterized in that, Before outputting artificial light simulating the characteristics of outdoor natural light based on the simulated light compensation parameters, the method further includes: Obtain the user's daily routine; Adjust the spectral ratio parameter in the simulated light compensation parameters according to the stated work and rest schedule.

10. A photobiological regulation device based on outdoor tracking, characterized in that, include: The time determination module is used to determine the user's effective outdoor time based on the collected user's light exposure data; The level determination module is used to determine the user's light compensation level based on the effective outdoor time and the target effective outdoor time. The parameter determination module is used to determine the photobiological adjustment parameters and the simulated light compensation parameters based on the light compensation level. The artificial light output module is used to output artificial light that simulates the characteristics of outdoor natural light according to the simulated light compensation parameters when the user is in a specified light compensation scene. The photobiological regulation module is used to perform photobiological regulation on the user based on the photobiological regulation parameters and preset wavelengths of red and near-infrared light.

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