Two portable long-term measurement devices for ECG and bioimpedance

This paper presents an implementation of two portable measurement device prototypes. Both prototypes are targeted for measuring ECG and bioimpedance signals. The first prototype is a wireless type, which sends data in real-time to a PC. The second prototype is a logging device, which stores data to a memory card. After a measurement session data from memory card is transferred to a PC through USB cable. One drawback in the first prototype is a poor usability caused by the limited range of the wireless data link and another drawback is a crosstalk between measured signals. The drawbacks of the first prototype were improved in the second prototype.