Title :
A flexible attitude system for wireless Micro-Ball endoscopy
Author :
Zheng Yin ; Guolin Li ; Xiang Xie ; Yingke Gu ; Jun Hu ; Dan Wang ; Zhihua Wang
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
To meet the needs of reducing miss rate of wireless Micro-Ball endoscopy and assisting in gastrointestinal (GI) tract images 2D representation in post-processing, a small size, low power attitude system is designed. The system, which consist of 3-axis magnetic and accelerate sensors, calculates the orientation of the wireless Micro-Ball helping select the most suitable camera to capture GI images and provide information for image registration. A demonstration system based on MCU is implemented and is verified in the Micro-Ball endoscopy system. The total power consumption of the hardware implementation is about 1.5mW at 50Hz output data rate (ODR). And the relative errors of pitch and yaw are within 2.5°, roll is within 3°.
Keywords :
biological organs; biomedical optical imaging; endoscopes; image sensors; magnetic sensors; medical image processing; power consumption; 3-axis magnetic sensors; accelerate sensors; camera; flexible attitude system; frequency 50 Hz; gastrointestinal tract image 2D representation; hardware implementation; image registration; output data rate; power attitude system; power consumption; relative errors; wireless microball endoscopy; Cameras; Endoscopes; Magnetic sensors; Vectors; Wireless communication; Wireless sensor networks;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2012 IEEE
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-2291-1
Electronic_ISBN :
978-1-4673-2292-8
DOI :
10.1109/BioCAS.2012.6418483
