Wireless Health 2010 Abstract

BSN 2009 Conference Paper

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A 4.5 minute long demo of the HeathMonitor

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Powerpoint Presentation
A recent presentation I gave to our group

BioEng 2007 Poster
A poster I presented on this project at my 2007 BioEngineering Conference

Home » Projects » HealthMonitor

The Berkeley Tricorder

The Berkley Tricorder is a highly integrated piece of wireless technology capable of monitoring a wide range of physiological parameters with very high precision in a compact form factor.  It represents a platform that can be used for a wide range of applications such as:

  • Ambulatory monitoring for diagnosing health issues
  • Low cost medical telemedicine device for use in developing countries (used in conjunction with dial-up-networking available on most cell phones via Bluetooth)
  • Long term continuous monitoring of the elderly or people with chronic conditions for early detection of serious events
  • Wireless real-time telemetry for sports training feedback
  • Triage applications



Click on video for larger view


This version of the health monitor was built in 2008, and has been vetted in a number of ambulatory studies. Check out some of the links to the left for more information.

Sensing Modalities

All samples are acquired at 256 samples/second at 12-bits unless otherwise specified.  

  • ECG - Single-channel ECG raw waveform
  • EMG - Muscle tesnion/activity
  • GSR (Galvanic Skin Response) - Changes in the electrical properties of the skin in response to stress or anxiety
  • Pulse Oximeter (Photoplethysmography)  - Measures volumetric changes due to pulsatile blood flow; Measures pulse rate, blood oxygen saturation [15 bits effective]
  • Skin Temperature
  • 3-Axis Accelerometer - Movement, Activity, Orientation; Fall-detection in the elderly [8 bits/axis]
  • bioImpedance - Breathing (respiration rate and volume), cough detection; level of hydration & water compartmentatlization [12 bits real / 12 bits imaginary]
  • PTT (Pulse Transit Time) - Derived from measuring the time difference between the R-wave in the ECG signal to the arrival of the pulse at the Pulse Oximeter site -- corresponds with Blood Pressure

Other features

  • microSD interface with FAT16 filesystem support (via a bugfixed version of dosfs)
  • Bluetooth interface (wireless telemetry, data transmission, audio transmission, dial-up-networkng)

Version 8

Currently being assembled.

  • Lower power consumption  
  • Improved noise isolation in Pulse Oximeter signal
  • Simpler BioImpedance output stage
  • Onboard GSM cell modem