Optimizing Power Consumption for STM32-based Wearable Health Monitor?
I am currently working on the development of a wearable health monitor based on the STM32 microcontroller. The device is intended for continuous monitoring of vital signs, such as heart rate and body temperature, and it is battery-powered.
I am facing a significant challenge in optimizing power consumption to ensure extended battery life without compromising the real-time monitoring capabilities. This is crucial, as users rely on the device for accurate and uninterrupted health data.
I'm seeking insights and strategies to efficiently manage power consumption in this real-time STM32 application. Specifically, I would like to know how to:
Minimize power consumption during periods of inactivity while ensuring the device remains responsive to vital sign changes.
Implement low-power modes or strategies that allow the microcontroller to enter sleep or standby states and wake up promptly to collect and transmit data when needed.
Utilize STM32's hardware features and HAL functions to achieve power-efficient sensor and communication module control.
Balance the need for real-time monitoring with power-saving measures, such as sensor sampling rates and communication intervals.
If you have experience with STM32-based wearable health devices or expertise in power optimization for real-time applications, I would greatly appreciate your insights and suggestions. Your guidance will be instrumental in enhancing the usability and practicality of this healthcare solution.
5 Replies
Interesting topic indeed. STM32L series are being classically used in wearables and low power designs. The newer generation of STM32U5 offer higher performance(even graphics) and come with LPBMA(low power background autonomous monitoring) and LP(low -power) peripheral options. I am evaluating one of these U5 - STM32U5A9-DK boards currently. Will share more once I have some study.
Worth looking at https://www.st.com/en/microcontrollers-microprocessors/stm32-ultra-low-power-mcus.html
The STM32U5 series (Arm® Cortex®-M33) with its best-in-class power consumption and enhanced security features is the latest addition to this rich portfolio.
Smart Watches, Health Cares, Heart-rate Monitors
Ditto Navadeep. @embeddedshiksha_39035 have you encountered the LPBAM feature Navadeep referenced? Worth looking into for sure as it sounds like it may check a couple boxes you listed.
Have you selected a device yet? Seems like the STM32L is the path if you're staying in the STM32 ecosystem.
Sure will check
Quick heads up on this thread - I just published a review on STM32U5 best in class power optimized MCU development kit https://community.element14.com/products/roadtest/rv/roadtest_reviews/1749/review_of_stm32u5a9j-dk_discovery_kit_with_embedded_display