Adaptive Light Therapy Terminal for Circadian Rhythm Regulation

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Solution Overview

Problem

Existing light therapy devices cannot flexibly adjust light based on individual user requirements, leading to inadequate circadian rhythm regulation due to fixed brightness levels and limited adaptability to varying user needs across different scenarios.

Innovation Solution

A method and terminal that determine awake and sleep time periods, set light parameter thresholds based on user profiles and geographical location, and adjust light emission accordingly to meet specific user requirements, using a light source device to optimize light exposure for improved circadian rhythm regulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed brightness levels are used in light therapy devices, then device complexity is reduced and ease of operation is improved, but adaptability to different user requirements and scenarios deteriorates

Engineering Contradiction:
Improveadaptability to user requirementsVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The light therapy device dynamically adjusts light parameters (brightness, color temperature, intensity) based on real-time detection of user physiological data such as melatonin levels, circadian rhythm phase, and sleep stages. This transforms the fixed-output device into an adaptive system that automatically modifies its light emission characteristics to match individual user needs and environmental conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback mechanisms by continuously monitoring user physiological parameters (via sensors detecting melatonin secretion, heart rate, body temperature) and using this information to adjust light therapy parameters. The device receives feedback about user response to light exposure and modifies subsequent light delivery accordingly, creating a closed-loop control system that enhances adaptability.

Inventive Principle:
Principle #23Feedback

2Measurement precision

If fixed brightness levels are used, then ease of operation is improved, but measurement precision of user-specific light requirements deteriorates

Engineering Contradiction:
Improveprecision of light requirement assessmentVSAvoidease of operation
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The light therapy device performs self-adjustment by automatically detecting user physiological state and determining optimal light parameters without requiring manual input or configuration from the user. The system autonomously measures melatonin levels, assesses circadian rhythm phase, and configures appropriate light therapy settings, eliminating the need for users to manually adjust brightness or understand complex parameters.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system precisely measures and adjusts multiple light parameters including brightness intensity, color temperature (spectral composition), pulse duration, and duty cycle based on detected physiological parameters. By changing these parameters dynamically according to user needs, the device achieves high measurement precision in assessing individual light requirements while maintaining automatic operation.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3791927B1Illumination adjustment method and terminal
Publication Date: 2024.07.03 HUAWEI TECH CO LTD
  • EP3791927B1 patent drawingFigure 1~2
  • EP3791927B1 patent drawingFigure 3
  • EP3791927B1 patent drawingFigure 4A

AI summary

Embodiments of this application relate to the field of communications technologies, and provide a light adjustment method and a terminal to resolve a problem that an existing light therapy device cannot flexibly adjust light based on a light requirement of a user and cannot more intelligently adjust a circadian rhythm of the user. The method includes: determining, by a terminal, an awake time period and a sleep time period of a user, and determining light parameter thresholds in the awake time period and the sleep time period; and then obtaining, by the terminal, a light parameter in a current time period, and adjusting, based on the light parameter in the current time period, a light parameter of light emitted by a light source device. This method is used in a process of adjusting the light emitted by the light source device.