RF Sensor Biometric Cardiovascular Monitoring
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Solution Overview
Problem
Conventional methods for determining cardiovascular parameters, such as blood pressure and heart rate, face challenges in maintaining consistent signal quality due to user variations and environmental factors, and are often invasive or inconvenient.
Innovation Solution
A radio frequency (RF) sensor system that includes multiple RF sensor devices positioned to transmit and receive signals at different locations on an artery, using signal modification and processing techniques to improve signal quality and generate accurate cardiovascular parameters, including heart beat metrics and blood pressure metrics, through continuous monitoring and dynamic adjustment of delay settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine cardiovascular parameters, then measurement can be obtained, but signal quality consistency deteriorates due to user variations and environmental factors
Solution Approach 1:
The patent divides the measurement system into multiple RF sensor devices positioned at different locations on the artery. Each sensor captures signals from different segments of the artery, allowing the system to process multiple signal sources to improve overall signal quality consistency and reliability under varying user and environmental conditions.
Solution Approach 2:
The patent implements dynamic adjustment of delay settings in the signal processing chain. The system continuously monitors signal quality and dynamically adjusts delay parameters to optimize signal detection despite user variations and environmental factors, thereby maintaining consistent measurement precision and reliability.
2Measurement precision
If invasive methods are used to obtain cardiovascular parameters, then measurement accuracy improves, but user comfort and convenience deteriorate
Solution Approach 1:
The patent replaces invasive mechanical measurement methods with non-invasive RF electromagnetic sensing. The RF sensor devices detect cardiovascular parameters through electromagnetic signals transmitted through and reflected from the artery, eliminating the need for physical intrusion while maintaining measurement accuracy and significantly improving user comfort and convenience.
3Productivity
If continuous monitoring is implemented, then real-time health data is obtained, but system complexity and energy consumption increase
Solution Approach 1:
The patent implements preliminary signal processing steps including delay adjustment and reference signal generation before main analysis. By preparing processed signal datasets in advance with optimized delay settings, the system reduces the computational burden during real-time continuous monitoring, thereby managing device complexity while maintaining real-time productivity.
4Reliability
If multiple RF sensor devices are used to improve signal quality, then measurement reliability improves, but device complexity increases
Solution Approach 1:
The patent combines multiple RF sensor devices into a coordinated measurement system where sensors work together to capture arterial signals from different locations. The system merges the data from multiple sensors through synchronized processing with delay adjustment, improving signal quality consistency and measurement reliability while managing the complexity through integrated signal processing rather than independent sensor operations.
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 RF system provides continuous, non-invasive monitoring of cardiovascular parameters with high granularity, overcoming issues of signal quality variability and user discomfort, and enabling real-time health monitoring and disease prediction.
Implementation Method 1
biometric measurements that utilize a sensor based on radio frequency (RF) detection and ranging technology
Data Source
AI summary
A system and method for evaluating cardiovascular-related health of a user including an RF sensor device configured to transmit incident pulse signals towards the user, and to receive reflected pulse signals for generating a reflected pulse signal dataset, a pulse signal modification module configured to modify the reflected pulse signal dataset, and a processing system communicably coupled to the RF sensor device and the pulse signal modification module, the processing system configured to generate a cardiovascular parameter for the user based on the modified reflected pulse signal dataset.