Medical isolation of universal serial bus data signals

Author

Junnila, Sakari ; Ruoho, Jarkko ; Niittylahti, J.

Author_Institution

Inst. of Digital & Comput. Syst., Tampere Univ. of Technol., Finland

Volume

3

fYear

2002

fDate

2002

Firstpage

1215

Abstract

Modern PC-based patient monitoring systems are modular, where serial bus connects the measurement units and the PC. The bus is usually a derivate of RS-485 or RS-232 serial buses. The Universal Serial Bus (USB) will probably replace RS-485 and RS-232 in some new applications. The USB specification does not specify anything about isolation, which is often required in medical communication applications. In this paper, we consider different isolation alternatives and present our implementation of medical isolation of USB data signals. We also discuss the problems we observed with maintaining compliance with the USB specification.

Keywords

biomedical telemetry; computerised monitoring; data acquisition; field buses; instrument transformers; medical computing; patient monitoring; PC-based patient monitoring systems; USB data signals; USB specification compliance; Universal Serial Bus; medical communication applications; Isolation technology; Measurement standards; Measurement units; Noise measurement; Patient monitoring; Power supplies; Standards development; Transformers; Universal Serial Bus; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2002. 9th International Conference on

Print_ISBN

0-7803-7596-3

Type

conf

DOI

10.1109/ICECS.2002.1046472

Filename

1046472