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Updated: May 25, 2026
11:21
Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data
Published on: July 27, 2018
CARER: efficient dynamic sensing for continuous activity monitoring
Lawrence K Au1, Alex A T Bui, Maxim A Batalin
1Electrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USA.
Summary
This study introduces CARER, a software system that optimizes wireless health sensor usage. It dynamically schedules measurements to conserve energy while maintaining accurate activity classification for chronic disease management.
Area of Science:
- Biomedical Engineering
- Computer Science
- Health Informatics
Background:
- Wireless health sensor systems are crucial for continuous activity monitoring in chronic disease management and physical rehabilitation.
- Remote sensor data collection offers objective in-field evaluation of physical activity patterns.
- Limited operating lifetime due to energy constraints is a primary limitation for these systems.
Purpose of the Study:
- To introduce CARER, a software system with a novel algorithm for dynamic sensor measurement scheduling.
- To address the challenge of energy conservation in wireless health sensor systems.
- To ensure classification accuracy while operating within an energy budget.
Main Methods:
- Development of the CARER software system.
- Implementation of a novel algorithm utilizing context-aware dynamic scheduling.
- Application of Partially Observable Markov Decision Process (POMDP) for sensor selection.
- Parameter estimation for POMDP using maximum likelihood estimation.
- Collection of multi-location body sensor data for activity pattern estimation.
Main Results:
- CARER enables dynamic scheduling of sensor measurement episodes.
- The system operates within a defined energy consumption budget.
- Classification accuracy is maintained despite energy-saving measures.
- Multi-location sensor data aids in estimating daily activity patterns.
Conclusions:
- CARER effectively manages energy consumption in wireless health sensor systems.
- The POMDP-based approach ensures reliable activity classification.
- This system supports efficient and objective remote patient monitoring for chronic diseases and rehabilitation.
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