Earphone Noise Cancellation Control via Motion State Detection
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Solution Overview
Problem
Earphones with strong noise cancellation functions can reduce users' sensitivity to environmental sounds, posing safety hazards, especially during rapid movements when visual alert detection is impaired.
Innovation Solution
An earphone control method that monitors the wearer's motion state using sensors or GPS, adjusts noise cancellation levels, and performs alert operations, such as increasing external sound gain or outputting reminders, when the wearer is in a potentially dangerous environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noise cancellation function is strengthened, then noise reduction effect is improved, but user sensitivity to environmental sounds deteriorates
Solution Approach 1:
The patent applies dynamics by making the noise cancellation level adjustable and changeable based on real-time motion state detection. The system transitions from a static noise cancellation setting to a dynamic one that automatically adapts to the user's activity level, allowing full noise cancellation during stationary periods and reduced noise cancellation during motion to maintain environmental awareness
Solution Approach 2:
The patent changes the parameter of noise cancellation intensity based on motion state parameters. By detecting motion through sensors and comparing against thresholds, the system adjusts the noise cancellation parameter dynamically - maintaining high cancellation when motion is low and reducing cancellation when motion exceeds thresholds, thus resolving the contradiction between noise reduction and environmental sound sensitivity
2Measurement precision
If visual alert identification is relied upon, then alert detection is improved, but safety deteriorates during rapid movement when visual identification is weakened
Solution Approach 1:
The patent applies preliminary action by proactively detecting motion states and preemptively adjusting noise cancellation levels before dangerous situations occur. The system continuously monitors motion parameters and提前 (in advance) modifies the audio output environment to ensure alert sounds remain detectable during upcoming high-motion periods, rather than reacting after the problem arises
Solution Approach 2:
The patent implements feedback by continuously monitoring motion state parameters from sensors and using this information to dynamically adjust noise cancellation levels. The system creates a closed-loop control where motion detection feedback automatically triggers appropriate noise cancellation adjustments, ensuring safety during rapid movement without requiring user intervention
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the user's ability to detect environmental dangers by adjusting noise cancellation and alert settings based on motion state, improving safety and user experience.
Implementation Method 1
an acceleration sensor or Global Positioning System (GPS) positioner is disposed at a position on the earphone contacting a wearer's head
Implementation Method 2
an acceleration sensor or Global Positioning System (GPS) positioner is disposed at a position on the earphone contacting a wearer's head
Data Source
AI summary
An earphone control method, an earphone control system and an earphone. The earphone control method includes: selecting a motion state judgement parameter of a wearer for controlling an earphone and setting an alert condition according to the selected motion state judgement parameter; real-timely monitoring and acquiring behavior data of the earphone wearer; calculating the motion state judgement parameter by using the acquired behavior data to obtain a motion state judgement parameter value; and judging whether or not the motion state judgement parameter value satisfies the alert condition; if the motion state judgement parameter value satisfies the alert condition, determining to enter an earphone alert state and controlling to perform corresponding alert operation on the earphone.