Ultra Low-Power Sensor Node for Wireless Health Monitoring System

Author

Teo, T. Hui ; Lim, Gin Kooi ; Sutomo, D. ; Tan, Kuo Hwi ; Gopalakrishnan, Pradeep Kumar ; Singh, Rajnder

Author_Institution

Inst. of Microelectron., Singapore

fYear

2007

fDate

27-30 May 2007

Firstpage

2363

Lastpage

2366

Abstract

Ultra low power sensor node for wireless health monitoring system was designed and implemented in 0.18-mum CMOS. The sensor node functions as an interface circuit to both sensor and RF transceiver. The sensor node consists of an amplifier, an ADC (analog-to-digital converter) as well as digital system. The digital system is embedded with DSP (digital signal processing) for heart rate processing and RF interface for transceiver. The sensor node draws a total current of 7.5-muA from a 0.9-V single supply. The decoding scheme in the RF transceiver can tolerate up to plusmn22% clock frequency variation.

Keywords

amplifiers; analogue-digital conversion; biomedical communication; low-power electronics; patient monitoring; sensors; transceivers; 0.18 micron; 0.9 V; 7.5 muA; Amplifier; CMOS integrated circuits; RF interface; RF transceiver; analog-to-digital converter; digital signal processing; digital system; heart rate processing; interface circuit; ultra low-power sensor node; wireless health monitoring system; Analog-digital conversion; Circuits; Digital signal processing; Digital systems; Monitoring; Radio frequency; Radiofrequency amplifiers; Sensor systems; Transceivers; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.377934

Filename

4253150