Monitor your sleep: breath, apneas, movments, and snoring detection - with alerts by vibrations

[troubadour06]

Hi,
I implemented a ‘Sleep Monitoring’ device based on the great Seeed nRF52840 Sense board and the code is developed in the Arduino environment / IDE. It measures breathing rate, sleep positions, movements, suspected sleep apnea events by measuring low‑frequency micro‑movements of the human body.
It also measures audio noises to detect snoring.
Alerts can be triggered in case of position on the back that favors apneas and snoring.
Snoring volume can also trigger vibration alerts.

The project is designed mostly for experimentation, and my wife is the real life and happy tester, as she suffers apneas, only when she sleeps on the back. Some vibrations when she is ont eh back and… she moves to the side
The software is Arduino based, in C. The user interface generating graphics is written in Python.
Its available on Github, with some level of documentation: GitHub - midibody/Sleep_monitor: Sleep-monitoring wearable for breathing, apnea, and snoring detection with vibration alerts

It works quite well, but I would be happy to get some advices regarding the power consumption: I use the IMU and even when switching to system off (NRF_POWER->SYSTEMOFF = 1), it still burns aound 570uA. If I remove the calls to UMI functions, it falls to mostly 0uA. So, the LSM6DS3.h library included in the Arduino nRF52 package seems to force something up (I dont use the BLE firmware as I dont use Blutooth).
Any idea , code in this environment is welcome

[PJ_Glasso]

HI there,

and welcome here…

So , You will want to check out @msfujino Posts he has some very excellent examples and code for BLE and Sleep Apnea. The Radar sensors are also very effective and getting better with each new revision.

The Tiny Size of Xiao and the Sensors makes it very suitable for these kinds of products.

HTH
GL PJ

[msfujino]

Hi troubadour06,

XIAO nRF52840(mbed) 1-Central 2-Peripherals Project "Sleeping Posture, Heart rate, Pulse oximetry Monitor"

Sleep apnea sufferers are encouraged to sleep on their side and need to manage pulse oximetry and heart rate Many wearable devices are used, but the number of measurements while sleeping was low and unsatisfactory. I developed this monitor recorder to obtain detailed information. I hope this will be helpful to those interested in this subject. Peripheral_1 consists of XIAO_BLE_Sense and a 3.7V 220mA(10 hours operation) battery, attached to the chest. Data from the built-in IMU is converted to R…

I’ve also built a similar device for experimentation. It uses the MAX30102 to measure heart rate and oxygen saturation. Later, I modified it to directly measure respiration using a BME280 pressure sensor, but it hasn’t been fully debugged yet.

I’ll look into your link as well.

EDIT: I wired a push button to D0 and an LED to D1 instead of a motor, then uploaded the sketch.
I wish there was a “quick start guide” that lets I try things out without reading all the documentation.

[troubadour06]

Thanks a lot for your feedback, I added a ‘quick start doc’ here: Sleep_monitor/quickStart.md at main · midibody/Sleep_monitor · GitHub

[troubadour06]

Thanks a lot for your feedback, I added a ‘quick start doc’ here: Sleep_monitor/quickStart.md at main · midibody/Sleep_monitor · GitHub