DocumentCode :
472545
Title :
Tracking wireless bio-medical sensors: Result validation with the Bland-Altman plots
Author :
Arshak, Khalil ; Adepoju, Francis ; Hayes, Kevin
Author_Institution :
Univ. of Limerick, Limerick
fYear :
2008
fDate :
12-14 Feb. 2008
Firstpage :
149
Lastpage :
154
Abstract :
In this paper, we present a series of experimental results of tracking an embedded sensor object similar in physical characteristics to telemetry capsules in the gastro-intestinal (GI) tract using radio frequency (RF) signals. A fair description of implementation detail is given in the body of the paper while focus is on analyzing the experimental results. Experiments were based on a test capsule transmitting radio frequency (RF) signals pulses at 433 MHz; a Receiver based on microcontroller circuits with ADC capability and a means of transferring the received signal strength intensity (RSSI) voltage converted to digital, from the microcontroller to the personal computer (PC). Primary focus is a unique and practical way of achieving the task of dynamically identifying the location of the capsule in real-time as it traverses the experimental duct. Tracking results for experiments in liquid simulating the electrical behavior of the lower portion of the intestines yielded an average error of about 18.9%. These results were validated with the Bland-Altman plots using manual measurements as gold standard. Overall analysis shows that the end result of the algorithm is quite suitable for tracking ingestible telemetry capsules in the GI tract.
Keywords :
biomedical telemetry; endoscopes; regression analysis; Bland-Altman plots; embedded sensor object; microcontroller circuits; radio frequency signals; received signal strength intensity; test capsule; wireless bio-medical sensors; Biosensors; Circuit testing; Microcontrollers; Pulse circuits; RF signals; Radio frequency; Receivers; Sensor phenomena and characterization; Telemetry; Wireless sensor networks; Bland-Altman plot; Gastro-intestinal track; Real-Time Localization; Trilateration; Wireless Endoscopy;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Sensors Applications Symposium, 2008. SAS 2008. IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1962-3
Electronic_ISBN :
978-1-4244-1963-0
Type :
conf
Filename :
4472961
Link To Document :
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