Wednesday, June 2, 2010

Heart Rate Variability - Data Handling

One heartbeat signal from Polar Chest Strap displayed in Audacity with Beat Finder marking.

Four heartbeats captured from a Polar Chest Strap displayed in Audacity using Beat Finder

Recording the signal from a heart rate monitor like Polar or Pro-Form using the Polar Heart Rate Module - RMCM01 from Sparkfun proved less complex than other techniques. Here is one of the best:


Audacity Beat Finder converted the audio signal into a text file of with every R-R interval time, and that signal is as accurate as an EKG.

The breakthrough came from this article. The Kubios software installed efficiently on both Windows and Ubuntu.

The details and pictures will follow. Budget Biofeedback has a table at the Ann Arbor Maker Faire on June 6, 2010. See you there.

Sunday, January 31, 2010

OMHE - Being Monitoring in Open Source

This is the future. Read more:

OMHE (Open Mobile Health Exchange): A Microsyntax for Devices, Machines, & Humans:

OMHE (Open Mobile Health Exchange), pronounced "ooommm" is an open-source microsyntax for text messaging (mobile SMS), Twitter®, medical devices, and other "short text capable" systems. It is a community work product of Its called OMHE because its the nirvana of health, free, and simple.

OMHE follows the basic syntax:




So the '=' sign is optional to make it easy to work on a telephone keypad when needed. For example, to report weight (either automatically reported by a scale or by human, you could say things like.




The examples above illustrate two ways of communicating the same piece of information, 'weight'.

Use OMHE as format for sending blood pressure, blood glucose, weight, pedometer readings, pain levels, and other common information exchanged between people, health care providers and medical devices.

OMHE is designed to be easily typed on a mobile phone, while at the same time, easy for computers to read, write, and understand (i.e. machine readable/writeable).

Friday, January 29, 2010

Latest in Medical Monitoring

The following clips are from this Slashdot item:

This is the lead information:
"Japanese venture firm WIN Human Recorder Ltd is set to bring a health monitor patch to market that is capable of keeping tabs on all your vitals. The HRS-I is a small (30mm x 30mm x 5mm) lightweight (7g) device that adheres to your chest and relays the data it collects to a computer or mobile phone via wireless connection. While the HRS-I only directly monitors electrocardiograph information, body surface temperature, and movement (via accelerometers), it can connect to sensors for heart rate, brain waves, respiration and many other important health indicators. WIN is selling the HRS-I for around ¥30,000 (~$330) and providing monitoring software for around ¥10,000 (~$110)."

This is an information rich comment:
This is old news, and just a variation on a theme -

As somebody who does this sort of stuff for a living - now they need to get around the IEC-60601 compliance and the FDA before they could introduce it in the USA. [] []

Something similar is in the works for hospital use: [] []

That goes out over WiFi inside a hospital.

Also - Bluetooth LE (Low Energy) is designed for this application and there are a bunch of "health monitors either int the works, or already out there for this: [] []

Blood Glucose monitors using this technology have been around for a while: [] []

Now if you want exciting - research into electronic eyes, electronic ears and neural pacemaker for people with epilepsy are kind of interesting. Google them and you will find them.

Got your Borg Implants? :-)