Title :
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
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;
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
DOI :
10.1109/ISCAS.2007.377934
