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:


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
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