DocumentCode :
1663069
Title :
A distributed transducer system for functional electrical stimulation
Author :
Gudnason, Gunnar ; Nielsen, Hannik H. ; Bruun, Erik ; Haugland, Morten
Author_Institution :
Tech. Univ. Denmark, Lyngby, Denmark
Volume :
1
fYear :
2001
fDate :
6/23/1905 12:00:00 AM
Firstpage :
397
Abstract :
Implanted transducers for functional electrical stimulation (FES) powered by inductive links are subject to conflicting requirements arising from low link efficiency, a low power budget and the need for protection of the weak signals against strong RF electromagnetic fields. We propose a solution to these problems by partitioning the RF transceiver and sensor/actuator functions onto separate integrated circuits. By amplifying measured neural signals directly at the measurements site and converting them into the digital domain before passing them to the transceiver the signal integrity is less likely to be affected by the inductive link. Neural stimulators are affected to a lesser degree, but still benefit from the partitioning. As a test case, we have designed a transceiver and a sensor chip which implement this partitioning policy. The transceiver is designed to operate in the 6.78 MHz ISM band and consumes approximately 360 μW. Both chips were implemented in a standard 0.5 μm CMOS technology, and use a 3 V supply voltage
Keywords :
CMOS integrated circuits; biomedical electronics; biomedical transducers; electric sensing devices; microactuators; microsensors; neuromuscular stimulation; power supplies to apparatus; prosthetics; radiofrequency interference; signal processing equipment; transceivers; 0.5 μm CMOS; 0.5 micron; 3 V; 3 V supply voltage; 360 μW; 360 muW; 6.78 MHz; 6.78 MHz ISM band; RF electromagnetic fields; RF transceiver; biomedical implants; digital domain; functional electrical stimulation; inductive links; link efficiency; neural signals; neural stimulators; partitioning; protection; signal integrity; transceiver; weak signals; CMOS technology; Electromagnetic fields; Electromagnetic measurements; Integrated circuit measurements; Neuromuscular stimulation; Power system protection; RF signals; Radio frequency; Transceivers; Transducers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on
Print_ISBN :
0-7803-7057-0
Type :
conf
DOI :
10.1109/ICECS.2001.957763
Filename :
957763
Link To Document :
بازگشت