Biometric Sensor Module Context Recognition via Pressure and Electrical State
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Solution Overview
Problem
Existing electronic devices face challenges in accurately recognizing external contexts, such as being underwater, without increasing unit cost or current consumption, as they rely on single sensors or require user input for function execution.
Innovation Solution
An electronic device equipped with an atmospheric pressure sensor and a biometric sensor module with multiple electrodes, where the electrodes detect electrical connections and transmit interrupt signals to the processor, allowing the device to determine context based on pressure changes and electrode states, thereby reducing the need for separate sensors and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are used to accurately recognize external context, then measurement precision is improved, but device complexity and unit cost increase
Solution Approach 1:
The biometric sensor module is designed to serve dual purposes: measuring biometric information (heart rate, respiratory rate) and detecting external context (water immersion, swimming). By making the sensor module universal, the patent eliminates the need for separate context recognition sensors, thereby reducing device complexity while maintaining accurate measurement of multiple parameters
2Measurement precision
If multiple sensors are used to accurately recognize external context, then measurement precision is improved, but unit cost increases
Solution Approach 1:
The biometric sensor module is designed to serve dual purposes: measuring biometric information (heart rate, respiratory rate) and detecting external context (water immersion, swimming). By making the sensor module universal, the patent eliminates the need for separate context recognition sensors, thereby reducing device complexity while maintaining accurate measurement of multiple parameters
3Measurement precision
If multiple sensors are used to recognize external context, then measurement precision is improved, but current consumption increases
Solution Approach 1:
The system uses periodic monitoring of electrode connections rather than continuous operation. The biometric sensor module periodically checks whether electrodes are connected to detect water immersion or swimming, and only activates full biometric measurement when needed. This periodic action significantly reduces current consumption while maintaining accurate context recognition
Solution Approach 2:
The biometric sensor module is designed to serve dual purposes: measuring biometric information (heart rate, respiratory rate) and detecting external context (water immersion, swimming). By making the sensor module universal, the patent eliminates the need for separate context recognition sensors, thereby reducing device complexity while maintaining accurate measurement of multiple parameters
4Adaptability or versatility
If user input is required to execute appropriate functions, then adaptability is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically detects external context through electrode connection status and pressure sensor data, then autonomously selects and executes appropriate functions without requiring user input. When water immersion is detected, the system automatically activates water-resistant mode; when swimming is detected, it automatically provides swimming guidance. This self-service approach maintains high adaptability while significantly improving ease of operation
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
The device accurately recognizes contexts like being underwater or swimming while reducing costs and power consumption by using integrated sensors and minimizing unnecessary sensor activation.
Implementation Method 1
an atmospheric pressure sensor configured to measure pressure
Implementation Method 2
some of the plurality of electrodes are disposed to come into contact with a body part of the user when the electronic device is worn, and others of the plurality of electrodes are disposed to not come into contact with a body part of the user when the electronic device is worn
Data Source
AI summary
A method is provided. The method includes identifying whether an amount of change in the pressure detected through an atmospheric pressure sensor is greater than or equal to a specified first threshold, in response to the amount of change in the pressure being greater than or equal to the first threshold, waking up a biometric sensor module including a plurality of electrodes in which some of the plurality of electrodes are disposed to come into contact with a body part of a user when the electronic device is worn, and others thereof are disposed to not come into contact with a body part of the user when the electronic device is worn, and identifying whether an interrupt signal, indicating that a state in which the plurality of electrodes are electrically connected is maintained for a specified first time or more, is received from the biometric sensor module.