Children patient sleep aiding system based on light adjustment remodeling biological clock

Abstract

The invention discloses a child patient sleep aiding system based on a light adjustment remodeling biological clock, and belongs to the field of medical health. A child patient sleep aiding system based on a light adjustment remodeling biological clock comprises an optical adjustment module, an environment monitoring module, a physiological monitoring module and a central processing module. The intelligent sleep-aiding system solves the problems that an existing sleep-aiding product for children lacks an optical adjustment means for a biological clock, and intervention is inaccurate and child patient compliance is low due to the fact that light environments are changeable and contact type monitoring is uncomfortable. The intelligent sleep-aiding system integrates intelligent phototherapy, ambient light dynamic compensation and non-contact physiological monitoring into a whole, and the intelligent sleep-aiding system has the advantages that the intelligent sleep-aiding system is simple in structure, convenient to use and high in practicability. Individualized illumination intervention can be automatically provided according to individual features and real-time states of child patients so as to improve child sleep disorders, accurate phototherapy dosage is ensured through a spectrum adjustable light source and real-time calibration, sleep physiological signals are analyzed through fusion of multiple sensors, dynamic optimization of intervention parameters is achieved, and the accuracy of the sleep physiological signals is improved. Therefore, the biological clock of the child patient is safely and effectively rebuilt.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical health, in particular to a sleep aid system for children based on light regulation and remodeling of biological clock. BACKGROUND

[0002] In modern society, sleep disorders in children are increasingly common, including difficulty falling asleep, frequent awakenings at night, rhythm disorders and other manifestations, which seriously affect the physical and mental development and quality of life of children. Light is the most important external factor for regulating human biological clock (circadian rhythm), and the blue light component has a significant impact on melatonin secretion and rhythm phase. However, existing sleep aid products for children focus on behavioral intervention or sound soothing, lack of light regulation means for biological clock, and the actual light exposure received by children often does not match the ideal rhythm regulation requirements due to the complex and variable daily light environment. At the same time, traditional contact physiological monitoring can cause discomfort in children, leading to difficulties in data collection and low compliance; therefore, it does not meet the existing needs, and for this we propose a sleep aid system for children based on light regulation and remodeling of biological clock. SUMMARY

[0003] The purpose of the present application is to provide a sleep aid system for children based on light regulation and remodeling of biological clock, which combines non-contact physiological monitoring and intelligent dynamic light regulation, and actively outputs compensatory or offsetting precise spectral intervention in a closed-loop manner based on real-time assessment of the sleep state of children and environmental light exposure, thereby remodeling the biological clock of children in a complex light environment, solving the problems raised in the background art.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a sleep aid system for children based on light regulation and remodeling of biological clock, comprising:

[0005] An optical regulation module configured to output light to the eye area of the child in accordance with a predetermined regulation scheme;

[0006] An environmental monitoring module including an environmental light sensor configured to obtain real-time environmental light intensity and spectral data of the environment in which the child is located;

[0007] A physiological monitoring module configured to collect at least two types of sleep physiological data of the child in a non-contact manner, the sleep physiological data including at least two of body movement signals, skin electrical signals and electrocardiogram signals;

[0008] A central processing module with an intelligent chip, which is in communication connection with the optical regulation module, the environmental monitoring module and the physiological monitoring module, and is configured to:

[0009] Generate a predetermined regulation scheme including light intensity, spectral composition and irradiation timing based on the age, sleep disorder type and baseline rhythm data of the child;

[0010] According to the ambient light data obtained by the environmental monitoring module, the optical adjustment module outputs light with a supplementary blue light component during the day and outputs light for reducing the blue light component at night;

[0011] According to the sleep physiological data collected by the physiological monitoring module, the output parameters of the optical adjustment module are adjusted.

[0012] Further, the optical adjustment module comprises:

[0013] The spectrum-adjustable light source module comprises a plurality of independently controllable light-emitting sub-modules configured to output blue light, green light and long-wavelength light with continuously adjustable intensity in the range of 0-100%;

[0014] The uniform light projection module comprises an optical diffuser, a microlens array and a flexible light guide element arranged in sequence along the light path, the flexible light guide element has an arc-shaped inner surface that fits the orbital contour around the eyes of the child, and the light exit surface of the flexible light guide element covers the eyelid area;

[0015] The spectrum calibration module comprises a spectrum sensor embedded in the near-eye side of the flexible light guide element, configured to monitor the spectrum and intensity of the light actually reaching the target area around the eyes in real time and form a feedback signal;

[0016] The spectrum-adjustable light source module and the spectrum calibration module are in communication connection with the intelligent chip of the central processing module, specifically:

[0017] According to the predetermined adjustment scheme, control instructions containing the target intensity and target timing of each waveband light are sent to the spectrum-adjustable light source module;

[0018] The spectrum and intensity data monitored by the spectrum calibration module are received and compared with the target intensity and target timing;

[0019] When the deviation between the monitoring data and the target value exceeds the set threshold, the driving current of the spectrum-adjustable light source module is adjusted.

[0020] Further, the spectrum calibration module is further configured to:

[0021] When the system is started, the spectrum parameters of the standard calibration light beam emitted by the spectrum-adjustable light source module are obtained;

[0022] During the emission of the standard calibration light beam, the actual received spectrum parameters after transmission and reflection inside the flexible light guide element are measured synchronously;

[0023] According to the comparison result of the spectrum parameters of the standard calibration light beam and the actual spectrum parameters, the spectrum transmission attenuation parameters and the chroma shift parameters of the flexible light guide element are obtained;

[0024] In generating the control instruction, the target intensity and spectral composition are corrected according to the spectral transmission attenuation parameter and the chroma offset parameter.

[0025] Further, the environment monitoring module comprises:

[0026] The spectral sensing module is configured to collect spectral energy distribution data of visible light to near-infrared band in the environment where the child is located, and output environmental illumination, color temperature and short-wavelength blue light irradiance.

[0027] The spatial scanning module comprises an arrayed light sensor configured to obtain light environment data in different directions within the activity area of the child, and generate an environmental light three-dimensional spatial distribution model.

[0028] The data fusion module is configured to calculate the light exposure dose of the child's eyes in the natural gaze direction according to the spectral energy distribution data and the environmental light three-dimensional spatial distribution model, and identify high-frequency flicker or pulsed blue light components in the environmental light.

[0029] Further, the physiological monitoring module comprises:

[0030] The physiological sensing module comprises a piezoelectric film sensor arranged in the lower layer of the mattress and a photoplethysmography sensor arranged above the sleep area, the piezoelectric film sensor being used to collect respiratory waveform, heart rate fluctuation and body movement events, and the photoplethysmography sensor being used to collect light intensity signals reflecting the blood volume changes of skin surface microvessels.

[0031] The signal processing module is configured to synchronize, denoise and feature extract the fusion signal and the light intensity signal, separate the respiratory signal and the heart signal from the fusion signal, extract the skin conductance level baseline and fluctuation frequency from the light intensity signal, and feed the processed respiratory signal, heart signal, body movement event, heart rate variability data and skin electrical activity data as at least two kinds of sleep physiological data to the central processing module.

[0032] Further, the signal processing module is further configured to:

[0033] Synchronously collect the signals of the piezoelectric film sensor and the photoplethysmography sensor in the initial period;

[0034] Adjust the gain and filtering parameters of the photoplethysmography sensor according to the correlation between the respiratory waveform and the heart cycle signal extracted from the light intensity signal;

[0035] When the quality of the light intensity signal continuously falls below a set threshold, the heart signal extracted by the piezoelectric film sensor is mainly used, and the skin electrical activity data is analyzed based on a pre-established corresponding relationship between the heart signal and the skin electrical activity.

[0036] Further, the central processing module comprises the following realized by an intelligent chip:

[0037] The scheme generation module is configured to generate an initial light adjustment scheme according to the age of the child, the type of sleep disorder and the baseline rhythm data;

[0038] The dynamic compensation module is configured to control the optical adjustment module to output light of a complementary spectrum during the day and to output light for reducing a specific spectrum component at night according to the ambient light data.

[0039] The closed-loop adjustment module is configured to adjust the output parameters of the optical adjustment module according to the sleep physiological data.

[0040] Further, the scheme generation module specifically performs the following processes:

[0041] The input age of the child, the type of sleep disorder and the baseline rhythm data calculated based on the initial monitoring data of the physiological monitoring module are received;

[0042] Based on the baseline rhythm data, the endogenous circadian rhythm phase and amplitude of the child are calculated through the built-in rhythm model;

[0043] According to the age, the type of sleep disorder, the rhythm phase and the amplitude, an initial predetermined adjustment scheme is generated from a preconfigured scheme library, and the predetermined adjustment scheme at least includes the target spectrum curve, the target light intensity and the irradiation start and end time of each of the daytime compensation period and the night offset period.

[0044] Further, the dynamic compensation module specifically performs the following processes:

[0045] During the daytime compensation period, the ambient light data monitored by the environment monitoring module is received in real time, the real-time spectrum in the ambient light is extracted, and the real-time spectrum is compared with the target spectrum curve in the predetermined adjustment scheme during the period;

[0046] If the intensity of the blue light component in the ambient light is lower than the corresponding value in the target spectrum curve, a first control instruction is generated to control the optical adjustment module to output compensation light of a specific intensity and spectrum, so that the intensity of the blue light component in the net spectrum received by the eyes of the child reaches the target value;

[0047] During the night offset period, the ambient light data monitored by the environment monitoring module is received in real time, and the interfering blue light band and intensity in the ambient light are identified;

[0048] Based on the identified interfering blue light parameters, a second control instruction is generated to control the optical adjustment module to output offset light with a specific spectrum component, and the spectrum of the offset light is configured to make the intensity of the blue light component in the net spectrum received by the eyes of the child lower than the preset sleep safety threshold after superimposing the spectrum of the offset light on the spectrum of the interfering blue light in the ambient light.

[0049] Further, the closed-loop adjustment module specifically performs the following processes:

[0050] Periodically receiving sleep physiological data fed back by the physiological monitoring module;

[0051] Based on the sleep physiological data analysis, at least one real-time sleep state parameter is obtained, including sleep latency, sleep stability index or number of night awakenings, and the real-time sleep state parameter is compared with the expected target range in the predetermined adjustment scheme;

[0052] If the real-time sleep state parameter deviates from the target range, a third control instruction is generated according to the preset adjustment strategy, and the output parameter of the optical adjustment module in the subsequent period is dynamically adjusted, including the output intensity, spectral ratio or action timing of the compensation light and the offset light.

[0053] Compared with the prior art, the beneficial effects of the present application are:

[0054] The present application integrates the optical adjustment module, the environmental monitoring module and the non-contact physiological monitoring module, and constructs an intelligent feedback system with the central processing module as the core, realizes the precise and personalized phototherapy intervention for children with sleep disorders, the system can generate an initial light adjustment scheme according to the individual characteristics of the child, and dynamically compensate and close-loop adjust according to the real-time environmental light exposure and sleep physiological data, so as to accurately regulate the light exposure around the child's eyes to the ideal state that meets the needs of its biological clock remodeling, thereby solving the problems of lack of light adjustment means for biological clock in existing products, and mismatch between actual light environment and ideal demand, and improving the sleep quality of the child. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 The structure diagram of the sleep aid system for children based on light regulation remodeling biological clock of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0057] In order to solve the technical problems of lack of light adjustment means for biological clock in existing children sleep aid products, and inaccurate intervention and low compliance of children due to variable light environment and unsuitable contact monitoring, please refer to Figure 1 The technical solutions of the present embodiment are as follows:

[0058] The sleep-aid system for children based on light regulation and remodeling of biological clock comprises:

[0059] An optical regulation module configured to output light conforming to a predetermined regulation scheme to the eye area of the child;

[0060] An environment monitoring module comprising an ambient light sensor configured to acquire ambient light intensity and spectral data of the environment where the child is located in real time;

[0061] A physiological monitoring module configured to collect at least two sleep physiological data of the child in a non-contact manner, the sleep physiological data comprising at least two of body movement signal, electrodermal signal and electrocardiogram signal;

[0062] A central processing module comprising an intelligent chip and being in communication connection with the optical regulation module, the environment monitoring module and the physiological monitoring module, and being configured to:

[0063] Generate a predetermined regulation scheme comprising light intensity, spectral composition and irradiation timing according to the age, sleep disorder type and baseline rhythm data of the child;

[0064] Control the optical regulation module to output light with supplementary blue light component during the day and light for reducing blue light component at night according to the ambient light data acquired by the environment monitoring module;

[0065] Adjust the output parameters of the optical regulation module according to the sleep physiological data collected by the physiological monitoring module.

[0066] The technical effects of the above technical solution are as follows: by integrating the optical regulation module, the environment monitoring module and the physiological monitoring module and intelligently linking them by the central processing module, a precise and personalized biological clock remodeling and sleep-aid closed-loop system is constructed, which can dynamically adjust the light intervention scheme according to the individual differences of the child and real-time environmental light interference, thereby making up for the deficiency of traditional single sleep-aid means that cannot correct the biological clock rhythm synchronously. The non-contact physiological monitoring improves the compliance and comfort of the child, significantly enhances the reliability of sleep state judgment through multi-modal sleep data fusion analysis, and enables the system to adaptively optimize the light parameters, thereby achieving the dual goals of daytime rhythm synchronization and nighttime sleep promotion.

[0067] The optical regulation module comprises:

[0068] A spectrum-adjustable light source module comprising a plurality of independently controllable light-emitting sub-modules configured to output blue light band light, green light band light and long-wavelength light with continuously adjustable intensity in the range of 0-100%;

[0069] The uniform light projection module comprises, in sequence along the light path, an optical diffusion sheet, a microlens array and a flexible light guide element, the flexible light guide element has an arc-shaped inner surface that is fitted to the contour of the orbital bone around the child's eye, and the light exit surface of the flexible light guide element covers the eyelid area.

[0070] The spectral calibration module comprises a spectral sensor embedded in the near-eye side of the flexible light guide element, configured to monitor the spectrum and intensity of the light actually reaching the target area around the eye in real time, and form a feedback signal.

[0071] The spectral adjustable light source module and the spectral calibration module are in communication connection with the intelligent chip of the central processing module, specifically:

[0072] The control instructions containing the target intensity and target timing of each waveband light are sent to the spectral adjustable light source module according to the predetermined adjustment scheme;

[0073] The spectral and intensity data monitored by the spectral calibration module are received and compared with the target intensity and target timing;

[0074] When the deviation of the monitored data from the target value exceeds the set threshold, the driving current of the spectral adjustable light source module is adjusted to ensure that the net light parameters received by the child's periorbital area accurately meet the predetermined adjustment scheme.

[0075] The technical effects of the above technical solutions are: through the spectral adjustable light source module, continuous and independent control of blue light, green light and long-wavelength light within a wide range of intensity can be achieved, thereby providing a core light intervention means for precise biological rhythm regulation; the uniform light projection module can ensure that the light energy uniformly, comfortably and efficiently covers the target eyelid area through multiple optical elements, thereby improving the wearing comfort of the child and the effectiveness of the light therapy; and the internal spectral calibration module can realize real-time in-situ monitoring and feedback of the key light parameters actually acting on the periorbital area, so that the central processing module can dynamically correct the light source output, effectively compensating for the deviation caused by device aging, environmental disturbance or wearing differences, thereby ensuring that the net light parameters received by the child's periorbital area are highly accurate and reliable in matching the generated predetermined adjustment scheme in terms of intensity, spectrum and timing.

[0076] The spectral calibration module is further configured to:

[0077] When the system is started or at a preset period, the spectral parameters of the standard calibration light beam emitted by the spectral adjustable light source module are obtained;

[0078] During the emission of the standard calibration light beam, the actual received spectral parameters after transmission and reflection inside the flexible light guide element are measured synchronously;

[0079] According to the comparison result of the spectral parameters of the standard calibration light beam and the actual spectral parameters, the spectral transmission attenuation parameters and the chroma shift parameters of the flexible light guide element are obtained.

[0080] In generating the control instruction, the target intensity and spectral composition are corrected according to the spectral transmission attenuation parameter and the chrominance offset parameter, so as to offset the influence of the characteristics and aging and deformation of the flexible light guide element on light transmission, and ensure that the preset output value of the control instruction can accurately meet the predetermined regulation scheme after passing through the light homogenizing projection module.

[0081] The technical effect of the above technical solution is that by introducing the self-calibration mechanism, the system can accurately quantify and compensate the spectral attenuation and chrominance offset of the light guide element caused by material characteristics, long-term aging, physical deformation or environmental factors, thereby ensuring the high transmission consistency of the light intervention dose in the spectral and intensity dimensions from the light source driving instruction to the final action on the perioptic biological target, greatly improving the accuracy and stability of the long-term use of the entire light regulation system, so that the patient can continuously receive the accurate phototherapy dose strictly in accordance with the individualized treatment scheme regardless of the length of use of the device or the state of the light guide element.

[0082] The environmental monitoring module comprises:

[0083] The spectral sensing module is configured to collect spectral energy distribution data of visible light to near-infrared band in the environment of the patient, and output the environmental illumination, color temperature and short-wavelength blue light irradiance;

[0084] The spatial scanning module comprises an arrayed light sensor configured to obtain light environment data in different directions within the activity area of the patient, and generate an environmental light three-dimensional spatial distribution model, wherein the establishment process of the three-dimensional spatial distribution model is a prior art content in the field and is not the inventive scheme of the present application, and will not be described here.

[0085] The data fusion module is configured to calculate the light exposure dose of the patient's eye in the natural gaze direction according to the spectral energy distribution data and the environmental light three-dimensional spatial distribution model, and identify the high-frequency flicker or pulsed blue light component in the environmental light.

[0086] The technical effect of the above technical solution is that through the cooperative work of the spectral sensing module and the spatial scanning module, and the calculation of the data fusion module, the light environment of the patient can be comprehensively and dynamically quantitatively evaluated from one-dimensional spectral information to three-dimensional spatial distribution, not only the intensity of the illumination, color temperature and key blue light component of the environmental light is accurately measured, but also the actual light exposure dose of the patient's eye is calculated by establishing the spatial distribution model and combining the natural gaze direction, so that the system can upgrade from passive perception of environmental light parameters to active evaluation of effective light intervention dose which actually affects the patient's biological clock, thereby significantly improving the adaptability and effectiveness of the entire system in individualized rhythm regulation under complex real light environment.

[0087] The physiological monitoring module comprises:

[0088] The physiological sensing module comprises a piezoelectric film sensor arranged in the lower layer of the mattress and a photoplethysmography sensor arranged above the sleep area, the piezoelectric film sensor is used to collect respiratory waveform, heart rate fluctuation and body movement event, and the photoplethysmography sensor is used to collect light intensity signal reflecting the blood volume change of skin surface microvessels;

[0089] The signal processing module is configured to synchronize, denoise and feature extract the fusion signal and the light intensity signal, separate the respiratory signal and the heart signal from the fusion signal, extract the skin conductance level baseline and fluctuation frequency from the light intensity signal, and feed the processed respiratory signal, heart signal, body movement event, heart rate variability data and skin electrical activity data as at least two kinds of sleep physiological data to the central processing module, wherein the implementation process of synchronization, denoising and feature extraction is the prior art content in the field, and is not the creative scheme of the present application, and is not described here.

[0090] The technical effects of the above technical scheme are that the physiological sensing module can collect multi-dimensional data such as respiratory waveform, heart signal, body movement event and skin electrical activity with high precision while avoiding interference with the natural sleep of the child, and the signal processing module can convert the physical pressure signal and the optical signal into key biomarkers reflecting the autonomic nervous state and the sleep structure through synchronization processing and intelligent feature extraction of the aforementioned original signals, thereby providing the central processing module with comprehensive, stable and deep sleep physiological state evaluation basis, and further laying a reliable physiological feedback foundation for dynamic and accurate optimization of the subsequent light regulation scheme.

[0091] The signal processing module is further configured to:

[0092] Synchronously collecting the signals of the piezoelectric film sensor and the photoplethysmography sensor in the initial period;

[0093] Adjusting the gain and filtering parameters of the photoplethysmography sensor according to the correlation of the respiratory waveform and the heart cycle signal extracted from the light intensity signal;

[0094] When the light intensity signal quality continuously falls below the set threshold, the heart signal extracted by the piezoelectric film sensor is mainly used, and the skin electrical activity data is analyzed based on the pre-established corresponding relationship between the heart signal and the skin electrical activity, for maintaining continuous and reliable feedback of at least two kinds of sleep physiological data.

[0095] The technical effects of the above technical solutions are: by introducing the sensor parameter dynamic self-optimization mechanism based on signal correlation and the multi-source signal redundancy complementary and fusion analysis strategy, the problem of unstable single sensor signal quality caused by individual differences or external interference in non-contact physiological monitoring can be solved, so that the entire physiological monitoring module can continuously output stable and reliable at least two kinds of sleep physiological data under different sleep stages and complex individual conditions.

[0096] The central processing module includes:

[0097] The scheme generation module is configured to generate an initial light adjustment scheme according to the age of the child, the sleep disorder type and the baseline rhythm data.

[0098] The dynamic compensation module is configured to control the optical adjustment module to output light with a complementary spectrum during the day and to output light for reducing a specific spectrum component at night according to the ambient light data.

[0099] The closed-loop adjustment module is configured to adjust the output parameters of the optical adjustment module according to the sleep physiological data.

[0100] The technical effects of the above technical solutions are: the central processing module cooperates with the scheme generation module, the dynamic compensation module and the closed-loop adjustment module, so that the system can not only customize a basic intervention strategy based on the static characteristics of the child, but also actively respond to the complex changes of the ambient light during the day and night to maintain a stable net light exposure dose through the dynamic compensation module, and continuously optimize the light parameters according to the real-time feedback of the sleep physiological data through the closed-loop adjustment module, so as to ensure that the light intervention can always accurately match the rhythm correction and sleep promotion needs of the child.

[0101] The scheme generation module specifically performs the following processes:

[0102] The age of the child, the sleep disorder type, and the baseline rhythm data calculated based on the initial monitoring data of the physiological monitoring module are received as input;

[0103] Based on the baseline rhythm data, the endogenous circadian rhythm phase and amplitude of the child are calculated through the built-in rhythm model;

[0104] According to the age, the sleep disorder type, the rhythm phase and the amplitude, an initial predetermined adjustment scheme is generated from a pre-stored scheme library, and the predetermined adjustment scheme at least includes the target spectrum curve, the target light intensity and the irradiation start and end time of each of the daytime compensation period and the night offset period.

[0105] The technical effects of the above technical solutions are: by integrating the age of the child, the sleep disorder type, and the baseline rhythm parameters objectively quantified through physiological monitoring data, and by using the built-in rhythm model to calculate the key rhythm phase and amplitude indicators, the scheme generation module can intelligently match a highly personalized initial light regulation scheme from the pre-set scheme library, thereby providing a scientific, accurate, and individual physiological actuality-matching scheme for subsequent dynamic intervention, and thereby improving the safety and effectiveness of treatment.

[0106] The dynamic compensation module specifically performs the following processes:

[0107] During the daytime compensation period, real-time environmental light data monitored by the environment monitoring module is received, the real-time spectrum in the environmental light is extracted, and compared with the target spectrum curve in the predetermined adjustment scheme for the period;

[0108] If the intensity of the blue light component in the environmental light is lower than the corresponding value in the target spectrum curve, a first control instruction is generated to control the optical adjustment module to output compensation light with a specific intensity and spectrum, so that the blue light component in the net spectrum received by the child's eyes reaches the target value;

[0109] During the night offset period, real-time environmental light data monitored by the environment monitoring module is received, and the interfering blue light band and intensity in the environmental light are identified;

[0110] Based on the identified interfering blue light parameters, a second control instruction is generated to control the optical adjustment module to output offset light with a specific spectral component, and the spectrum of the offset light is configured to superimpose the interfering blue light spectrum in the environmental light, so that the intensity of the blue light component in the net spectrum received by the child's eyes is lower than the preset sleep safety threshold.

[0111] The technical effects of the above technical solutions are: by respectively performing real-time monitoring, spectrum comparison and intelligent compensation in daytime and nighttime, a two-way dynamic adjustment strategy is implemented, that is, in daytime, environmental blue light deficiency can be actively detected and accurately supplemented to ensure that the required synchronous light dose of the biological clock is reliably met, and in nighttime, interfering blue light in the environment can be actively identified and spectrum-specific offset light can be generated to neutralize the interfering blue light, thereby realizing precise closed-loop control of the actual net light received by the child's eyes.

[0112] The closed-loop adjustment module specifically performs the following processes:

[0113] Periodically receive sleep physiological data fed back by the physiological monitoring module;

[0114] At least one real-time sleep state parameter is obtained based on sleep physiological data analysis, including sleep latency, sleep stability index or number of night awakenings, and the real-time sleep state parameter is compared with the expected target range in the predetermined adjustment scheme;

[0115] If the real-time sleep state parameter deviates from the target range, a third control instruction is generated according to a preset adjustment strategy to dynamically adjust the output parameter of the optical adjustment module in the subsequent period, and the output parameter includes the output intensity, spectral ratio or action timing of the compensating light and the offsetting light.

[0116] The technical effects of the above technical solutions are: by converting the real-time multi-dimensional sleep physiological data into specific sleep state parameters and intelligently comparing them with the preset target, the continuous quantitative evaluation and dynamic optimization of the light adjustment intervention effect are realized, and when the actual sleep indicators deviate from the expectation, the system can automatically adjust the parameters of the subsequent light intervention according to the preset strategy, so that the intervention scheme can be adaptively iterated according to the individual differences and dynamic changes of the physiological responses of the children, thereby improving the precision, adaptability and stability of the entire system for personalized intervention of children's sleep disorders.

[0117] Working principle: the system generates a personalized light adjustment scheme according to the individual characteristics of the children and the initial rhythm evaluation, the optical adjustment module outputs precise and controllable light to the eyes of the children through spectrum-adjustable light sources and uniform light projection combined with real-time calibration, the environmental monitoring module analyzes the spectrum and spatial distribution of the ambient light in real time, dynamically calculates the actual light exposure dose of the eyes of the children, and the central processing module accordingly supplements the insufficient blue light during the day and outputs specific spectrum at night to offset the interfering blue light in the environment, so as to ensure that the net light exposure always meets the scheme target. At the same time, the physiological monitoring module continuously collects multi-modal sleep physiological data in a non-contact manner, the central processing module dynamically adjusts the output parameters of the subsequent light adjustment module by analyzing the sleep state parameters and comparing them with the expected target, forming an adaptive optimization closed loop with the improvement of sleep as the terminal. The present application can realize the precise remodeling of the children's biological clock and the continuous and effective improvement of the sleep quality in a comfortable and non-invasive manner in complex real-life scenarios by constructing a sleep aid system integrating personalized scheme development, dynamic intelligent compensation of ambient light, high-precision and reliable light output, and physiological feedback-based sleep aid system.

[0118] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0119] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and changes can be made by those skilled in the art without departing from the spirit and principles of the present application.

Claims

1. A sleep aid system for children based on light-induced remodeling of the biological clock, characterized in that, include: The optical adjustment module is configured to output light to the periocular area of ​​the child in accordance with a predetermined adjustment scheme. The environmental monitoring module includes an ambient light sensor, configured to acquire real-time ambient light intensity and spectral data of the environment in which the child is located; The physiological monitoring module is configured to collect at least two types of sleep physiological data from the child in a non-contact manner, wherein the sleep physiological data includes at least two of body movement signals, skin conductance signals, and electrocardiogram signals; The central processing module, with a built-in intelligent chip, communicates with the optical adjustment module, environmental monitoring module, and physiological monitoring module, and is configured as follows: Based on the child's age, type of sleep disorder, and baseline circadian rhythm data, a predetermined adjustment plan is generated, which includes light intensity, spectral composition, and irradiation timing. Based on the ambient light data obtained by the environmental monitoring module, the optical adjustment module is controlled to output light that supplements the blue light component during the day and to output light that reduces the blue light component at night. Based on the sleep physiological data collected by the physiological monitoring module, the output parameters of the optical adjustment module are adjusted.

2. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 1, characterized in that, The optical adjustment module includes: The spectrally tunable light source module includes multiple independently controllable light-emitting sub-modules, configured to continuously adjust the output intensity of blue light, green light, and long-wavelength light within the range of 0-100%. The uniform light projection module includes an optical diffuser, a microlens array, and a flexible light guide element arranged sequentially along the light path. The flexible light guide element has an arc-shaped inner surface that conforms to the contour of the orbital bone around the child's eye, and the light-emitting surface of the flexible light guide element covers the eyelid area. The spectral calibration module includes a spectral sensor embedded in the flexible light guide element near the eye, configured to monitor the actual light spectrum and intensity reaching the target area around the eye in real time and generate a feedback signal; Specifically, the spectrally tunable light source module and the spectral calibration module are connected to the intelligent chip of the central processing module, as follows: According to the predetermined adjustment scheme, control commands containing the light target intensity and target timing of each wavelength band are sent to the spectrally tunable light source module. Receive spectral and intensity data monitored by the spectral calibration module and compare them with the target intensity and target time series; When the deviation between the monitored data and the target value exceeds the set threshold, the drive current of the spectral adjustable light source module is adjusted.

3. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 2, characterized in that, The spectral calibration module is further configured as follows: When the system starts up, the spectral parameters of the standard calibration beam emitted by the spectrally tunable light source module are acquired; During the emission of the standard calibration beam, the actual received spectral parameters after transmission and reflection within the flexible light guide element are measured simultaneously. Based on the comparison between the spectral parameters of the standard calibration beam and the actual spectral parameters, the spectral transmission attenuation parameters and chromaticity shift parameters of the flexible light guide element are obtained. When generating control commands, the target intensity and spectral composition are corrected based on the spectral transmission attenuation parameter and the chromaticity shift parameter.

4. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 1, characterized in that, The environmental monitoring module includes: The spectral sensing module is configured to collect spectral energy distribution data in the visible to near-infrared bands of the environment in which the child is located, and output ambient illuminance, color temperature and short-wavelength blue light irradiance. The spatial scanning module includes an array of light sensors configured to acquire light environment data from different directions within the child's activity area and generate a three-dimensional spatial distribution model of ambient light. The data fusion module is configured to calculate the light exposure dose of the child's eyes in the natural gaze direction based on spectral energy distribution data and a three-dimensional spatial distribution model of ambient light, and to identify high-frequency flickering or pulsed blue light components in the ambient light.

5. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 1, characterized in that, The physiological monitoring module includes: The physiological sensing module includes a piezoelectric thin film sensor disposed on the underside of the mattress and a photoplethysmography sensor disposed above the sleeping area. The piezoelectric thin film sensor is used to collect respiratory waveforms, heart rate fluctuations, and body movement events, while the photoplethysmography sensor is used to collect light intensity signals that reflect changes in the blood volume of microvessels on the skin surface. The signal processing module is configured to synchronize, denoise, and extract features from the fused signal and the light intensity signal, separate the respiratory signal and cardiac signal from the fused signal, extract the skin conductance baseline and fluctuation frequency from the light intensity signal, and feed the processed respiratory signal, cardiac signal, body movement event, heart rate variability data, and skin conductance activity data as at least two types of sleep physiological data back to the central processing module.

6. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 5, characterized in that, The signal processing module is further configured as follows: Signals from the piezoelectric thin film sensor and the photoplethysmography sensor were acquired simultaneously during the initial period. Based on the correlation between the respiratory waveform and the cardiac cycle signal extracted from the light intensity signal, the gain and filtering parameters of the photoplethysmography sensor are adjusted. When the light intensity signal quality is consistently below a set threshold, the cardiac signal extracted by the piezoelectric thin film sensor is used as the primary signal, and the skin electrical activity data is analyzed based on the pre-established correspondence between the cardiac signal and skin electrical activity.

7. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 1, characterized in that, The central processing module includes components implemented using smart chips: The protocol generation module is configured to generate an initial light modulation protocol based on the child's age, type of sleep disorder, and baseline rhythm data. The dynamic compensation module is configured to control the optical adjustment module to output supplementary spectral illumination during the day and to output illumination at night to reduce specific spectral components based on ambient light data. The closed-loop adjustment module is configured to adjust the output parameters of the optical adjustment module based on sleep physiological data.

8. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 7, characterized in that, The solution generation module specifically executes the following process: The system receives the child's age, type of sleep disorder, and baseline rhythm data calculated based on initial monitoring data from the physiological monitoring module. Based on baseline rhythm data, the phase and amplitude of the child's endogenous diurnal rhythm are calculated using a built-in rhythm model; Based on age, type of sleep disorder, rhythm phase and amplitude, an initial predetermined adjustment scheme is generated by matching from a preset scheme library. The predetermined adjustment scheme includes at least the target spectral curves, target light intensity and irradiation start and end times for the daytime compensation period and the nighttime offset period.

9. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 7, characterized in that, The dynamic compensation module specifically executes the following process: During the daytime compensation period, the ambient light data monitored by the environmental monitoring module is received in real time, the real-time spectrum of the ambient light is extracted, and it is compared with the target spectral curve of the predetermined adjustment scheme for that period. If the intensity of the blue light component in the ambient light is lower than the corresponding value in the target spectrum curve, a first control command is generated to control the optical adjustment module to output compensation light with a specific intensity and spectrum, so that the blue light component in the net spectrum received by the child's eyes reaches the target value. During the nighttime offsetting period, the system receives ambient light data monitored by the environmental monitoring module in real time and identifies the interfering blue light bands and intensities in the ambient light. Based on the identified interfering blue light parameters, a second control command is generated to control the optical adjustment module to output a canceling light with specific spectral components. The spectrum of the canceling light is configured so that after being superimposed with the interfering blue light spectrum in the ambient light, the intensity of the blue light component in the net spectrum received by the child's eyes is lower than a preset sleep safety threshold.

10. The sleep aid system for children based on light-induced remodeling of the biological clock according to claim 7, characterized in that, The closed-loop adjustment module specifically executes the following process: It periodically receives sleep physiological data fed back from the physiological monitoring module; At least one real-time sleep state parameter is obtained based on sleep physiological data analysis. The real-time sleep state parameter includes sleep latency, sleep stability index or number of nighttime awakenings. The real-time sleep state parameter is compared with the expected target range in the predetermined adjustment program. If the real-time sleep state parameters deviate from the target range, a third control command is generated according to the preset adjustment strategy to dynamically adjust the output parameters of the optical adjustment module in subsequent cycles. The output parameters include the output intensity, spectral ratio, or action sequence of the compensation light and the cancellation light.

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