Health Monitor Duration Filtering for Minimum Heart Rate
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Solution Overview
Problem
Existing heart rate measurement devices provide inaccurate and non-repeatable heart rate measurements, particularly for determining the minimum heart rate, which is crucial for deriving health and fitness parameters.
Innovation Solution
A system and method for determining a minimum heart rate (MHR) by filtering heart rate data using an adaptive threshold and duration criteria, processing data to identify stable, baseline heart rate measurements over time, and utilizing a minimum heuristics algorithm to refine the MHR value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If heart rate data is collected continuously over time, then more data is available for analysis, but the data includes transient values that reduce measurement accuracy
Solution Approach 1:
The patent extracts and removes transient heart rate values from the continuous data stream by applying a duration threshold filter. Only heart rate values that persist for at least the threshold duration are retained, effectively separating meaningful baseline data from transient noise while preserving the benefits of continuous monitoring.
Solution Approach 2:
The continuous heart rate data stream is segmented into discrete events based on duration criteria. Each heart rate value is evaluated independently against the duration threshold, creating distinct segments of valid data that can be analyzed separately to determine the minimum heart rate.
2Measurement precision
If a simple minimum value is taken from heart rate data, then the calculation is fast and simple, but the result is inaccurate due to transient values
Solution Approach 1:
The patent applies preliminary filtering action by establishing and applying a duration threshold before determining the minimum heart rate. This pre-processing step eliminates transient values in advance, ensuring that the subsequent minimum value calculation is performed only on valid, stable heart rate data, thus improving accuracy without requiring complex post-processing algorithms.
3Reliability
If transient heart rate values are included in analysis, then all collected data is utilized, but the reliability of the minimum heart rate determination is reduced
Solution Approach 1:
The patent extracts transient heart rate values from the complete data set by applying duration-based filtering. This selective extraction removes unreliable transient measurements while retaining all valid heart rate data that meets the duration criterion, thereby improving reliability without unnecessarily discarding valuable information.
Solution Approach 2:
The patent applies different quality criteria to different heart rate values based on their temporal characteristics. Each heart rate value is evaluated individually against the duration threshold, allowing the system to selectively include or exclude values based on local data quality rather than applying a uniform filter to all data.
Data Source
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AI summary
Methods and apparatus, including computer program products, are provided for analyzing heart rate data for a fitness or health device. In some example embodiments, there may be provided an apparatus that includes at least one processor and at least one memory including program code which when executed configures the apparatus to at least: receive, from at least one heart rate sensor, a heart rate data set collected from a subject over at least one session; filter the heart rate data set to remove at least one heart rate value failing to satisfy a predetermined duration threshold; determine a minimum heart rate value from the filtered heart rate data; and provide the determined minimum heart rate. Related systems, methods, and articles of manufacture are also described.