Title
An embedded multichannel telemetry unit for bone strain monitoring.
Abstract
An embedded telemetry unit for bone strain monitoring is presented. The telemetry unit is designed using commercially available components to lower design time and manufacturing costs. The unit can read up to eight strain gauges and measures 2.4 cm × 1.3 cm × 0.7 cm. The unit is powered from a small Li-polymer battery that can be recharged wirelessly through tissue, making it suitable for implanted applications. The average current consumption of the telemetry unit is 1.9 mA while transmitting at a rate of 75 kps and at a sampling rate of 20 Hz. The telemetry unit also features a power-down mode to minimize its power consumption when it is not in use. The telemetry unit operates in the 915-MHz ISM radio band. The unit was tested in an ex vivo setting with an ulna bone from a mouse and in a simulated in vivo setting with a phantom tissue. Bone strain data collected ex vivo shows that the telemetry unit can measure strain with an accuracy comparable to a more expensive benchtop data acquisition system.
Year
DOI
Venue
2013
10.1186/1687-3963-2013-14
EURASIP J. Emb. Sys.
Keywords
Field
DocType
Packet Loss, Strain Gauge, Control Packet, Sleep Mode, Radio Packet
Biomedical engineering,Computer science,Imaging phantom,Sampling (signal processing),Average current,Data acquisition,Real-time computing,Telemetry unit,Strain gauge,Radio spectrum,Power consumption,Embedded system
Journal
Volume
Issue
ISSN
2013
1
1687-3963
Citations 
PageRank 
References 
0
0.34
6
Authors
4
Name
Order
Citations
PageRank
Fahad Moiz111.03
Sharika Kumar200.34
Walter D. Leon36913.94
Mark Johnson400.34