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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mao Li Chao Hu Shuang Song Houde Dai Meng, M.Q.-H. |
| Copyright Year | 2009 |
| Description | Author affiliation: Shenzhen Institute of Advanced Integration Technology, Chinese Academy of Sciences (Mao Li; Chao Hu; Shuang Song; Houde Dai) || Department of Electronic Engineering The Chinese University of HongKong (Meng, M.Q.-H.) |
| Abstract | A permanent magnet is embedded in the capsule endoscope to perform as an excitation source for tracking capsule's position and orientation, and a magnetic sensor array is built around the capsule to capture the signals from magnet. However, the magnet-field signal is weak and attenuates dramatically when the spatial distance between the magnet and the sensor increases. How to detect this weak magnetic signal will be the key factor to influence the tracking accuracy, so a high stable, sensitive, anti-interference magnetic measurement system must be developed. In this paper, we present a weak magnetic signal detection system which is composed of Honeywell 3-axis magnetic sensors, high performance analog multiplexers, low noisy amplifiers, 16 bits A/D converter, and ARM controller. Especially, some processing measures are employed to reduce the sensors' tolerance and enhance the sensitivity and dynamic range of localization system. The experimental results show that this detection system can be effectively applied for the cubic magnetic sensor array with the measurement space of 0.5m×0.5m×0.5m. |
| Starting Page | 900 |
| Ending Page | 905 |
| File Size | 777163 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424447947 |
| DOI | 10.1109/ICAL.2009.5262793 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-08-05 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Multiplexing Magnetic Localization and Orientation Magnetic variables measurement Magnetic noise Control systems Permanent magnets Sensor systems Weak Signal Detection Sensor arrays Endoscopes Magnetic sensors Wireless Capsule Endoscope Signal detection Magnetic Sensor |
| Content Type | Text |
| Resource Type | Article |
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