A CMOS microcontroller based PCM encoder for use with a total artificial heart

Author

Khomeshwari, Arcot R. ; Jeutter, D.C.

Author_Institution

Dept. of Electr. Comput. & Biomed. Eng., Marquette Univ., Milwaukee, WI, USA

fYear

1989

Firstpage

157

Abstract

A multichannel, implantable, microcontroller system has been developed for use with a total artificial heart to provide monitoring of physiological and electrical parameters such as blood flow, pressure, ECG, and battery voltage. Although the system described samples data from eight channels at 200 Hz, various sample rates can be used to sample different channels by simply modifying the software. Data are transmitted to a remote data acquisition system comprising a personal computer or recorders outside the body over a 10 MHz FSK link at 19.2 kbaud. The system is a half duplex, asynchronous system and uses pulse code modulation (PCM) techniques. The use of the CMOS MC68HC11 microcontroller has greatly reduced the size and power requirements of such a system

Keywords

artificial organs; biomedical electronics; cardiology; medical computing; microcontrollers; 10 MHz; 200 Hz; CMOS MC68HC11 microcontroller; CMOS microcontroller based PCM encoder; ECG; battery voltage; blood flow; blood pressure; electrical parameters; half duplex asynchronous system; personal computer; physiological parameters monitoring; pulse code modulation; remote data acquisition system; sample rate; total artificial heart; Artificial heart; Batteries; Biomedical monitoring; Blood flow; Condition monitoring; Electrocardiography; Microcontrollers; Phase change materials; Pulse modulation; Remote monitoring;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in

Conference_Location

Seattle, WA

Type

conf

DOI

10.1109/IEMBS.1989.95658

Filename

95658