PPG Sensor Exercise Type Identification
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Solution Overview
Problem
Current electronic devices using acceleration and heart rate sensors are inadequate in providing accurate exercise intensity information, particularly for isolated exercises and distinguishing between aerobic and static exercises, leading to suboptimal workout performance.
Innovation Solution
An electronic device incorporating a photoplethysmography (PPG) sensor to determine exercise type and intensity, in conjunction with data from existing sensors, and providing users with feedback for tailored workout guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If acceleration sensor and heart rate sensor are used to provide exercise information, then basic exercise data can be obtained, but accurate exercise intensity information cannot be provided for isolated exercises and distinguishing between aerobic and static exercises
Solution Approach 1:
The patent combines data from multiple sensors including acceleration sensor, heart rate sensor, and PPG sensor to comprehensively determine exercise type and intensity. By merging information from these different sensing mechanisms, the system achieves accurate recognition of both isolated exercises (like planks) and differentiation between aerobic and static exercises, resolving the limitation of using single sensor types.
Solution Approach 2:
The system uses a multi-functional sensing approach where the PPG sensor serves multiple purposes: detecting heart rate, determining exercise type (aerobic vs. static), and assessing exercise intensity. This universal application of the PPG sensor across multiple measurement functions enables the system to provide accurate exercise information for diverse exercise types without requiring separate specialized sensors for each exercise category.
2Measurement precision
If PPG sensor is added to determine exercise type and intensity, then accurate exercise information can be provided, but device complexity increases
Solution Approach 1:
The PPG sensor is designed to perform multiple functions within a single device: it detects heart rate variations, determines exercise type (aerobic versus static), and assesses exercise intensity. This multi-functional capability reduces the need for additional specialized sensors, thereby limiting the increase in device complexity while achieving high measurement precision across different exercise parameters.
3Loss of information
If multiple sensors are integrated to provide comprehensive exercise data, then exercise information accuracy improves, but processing and analysis complexity increases
Solution Approach 1:
The system employs feedback mechanisms where data from acceleration sensors, heart rate sensors, and PPG sensors are continuously processed and cross-validated. The processing unit uses feedback from multiple sensor streams to iteratively refine exercise type determination and intensity assessment, ensuring complete and accurate exercise information while managing data processing complexity through systematic feedback loops.
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
Enables accurate identification of exercise type and intensity, ensuring users perform optimal exercises aligned with their goals by integrating blood pressure data with motion and heart rate data, thus enhancing workout effectiveness.
Implementation Method 1
determine the type and intensity of first exercise performed by the user on the basis of at least some of the first sensor data or at least some of the second sensor data... using blood pressure data of a user, which is sensed by a photoplethysmography (PPG) sensor
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing, a touch screen display to be exposed through a first portion of the housing, a motion sensor disposed inside the housing, a photoplethysmography (PPG) sensor disposed in a second portion of the housing, a processor operatively coupled to the display, the motion sensor, and the PPG sensor, and a memory operably coupled to the processor. The memory stores instructions that allow, when executed, the processor to receive first data from the motion sensor, identify whether a user has started exercise based on at least a portion of the first data, receive second data from the PPG sensor after identifying whether or not the user has started exercise, and determine the type of exercise of the user based on at least a portion of the first data and the second data.