  The measurement of the pulse wave has proven to be a vital tool in medical
diagnosis. Whereby most pulse wave measurements are carried out at extremities,
this work proposes a system for measuring the pulse wave and the Pulse Arrival
Time (PAT) in the interior of the ear. The developed measurement device is
based on a battery powered microcontroller system. The measurement device
simultaneously acquires an Einthoven Lead II Electrocardiogram (ECG), a dual
wavelength Photoplethysmogram (PPG), the pressure in both ears, the temperature
inside the ear canal, as well as the subject's motion. The acquired measurement
data can either be saved on a micro SD-card or can be transmitted wireless via
Bluetooth or wired via USB to a host PC for further analysis. Battery powered
the device can operate up to 8 hours. In addition to the system description,
first measurements carried out with the system will be presented.
