Study on the system of a capsule endoscope driven by an outer rotational magnetic field

2006 ◽  
Author(s):  
Wei Zhang ◽  
Yingjun Chen ◽  
Ping Huang
Keyword(s):  
Magnetic Field ◽  
Capsule Endoscope ◽  
Rotational Magnetic Field

Self-assembly and novel planetary motion of ferrofluid drops in a rotational magnetic field

2014 ◽  
Vol 18 (5-6) ◽  
pp. 795-806 ◽  
Author(s):  
Ching-Yao Chen ◽  
Hao-Chung Hsueh ◽  
Sheng-Yan Wang ◽  
Yan-Hom Li
Keyword(s):  
Magnetic Field ◽  
Self Assembly ◽  
Planetary Motion ◽  
Rotational Magnetic Field

Magnetic Generator with Automatic Gain Regulation in a Wireless Tracking System for a Capsule Endoscope

2013 ◽  
Vol 401-403 ◽  
pp. 1393-1396
Author(s):  
Xu Dong Guo ◽  
Chao Ruan ◽  
Bin Ge ◽  
Rong Guo Yan ◽  
Ying Liu
Keyword(s):  
Magnetic Field ◽  
Signal To Noise Ratio ◽  
Tracking System ◽  
Reference Value ◽  
Digital Signal ◽  
Measuring Method ◽  
Magnetic Sensor ◽  
Capsule Endoscope ◽  
The Magnetic Field ◽  
Magnetic Generator

To track a capsule endoscope, a novel measuring method based on alternating magnetic field is presented. The signal-to-noise ratio of the magnetic sensor decreases sharply with the increasing tracking distance. Thus, a magnetic generator with automatic gain regulation is designed to improve the localization precision. It is composed of a microcontroller, a DA converter, a timer, a waveform synthesis circuit, a power amplifier, a sequence control circuit and excitation coils. First, the wireless magnetic sensor measures the strength of the magnetic field produced by the magnetic generator. Via radio frequency communication, the measured result is feedback to the comparator of the microcontroller. According to a deviation obtained by comparing the measured results with the reference value, the microcontroller outputs a digital signal to the DA converter to control the magnitude of the exciting current. The prototype of the system was developed and the experiment was performed. The experiment shows that the magnetic field generator can automatically adjust the strength of the exciting signal.

Spinning rate decay of levitated high-Tc superconductors in rotational magnetic field

1992 ◽  
Vol 193 (1-2) ◽  
pp. 110-116 ◽  
Author(s):  
A.N. Terentiev ◽  
E.O. Kutukova ◽  
A.A. Kuznetsov ◽  
A.P. Mozhaev
Keyword(s):  
Magnetic Field ◽  
High Tc Superconductors ◽  
High Tc ◽  
Rotational Magnetic Field ◽  
Rate Decay

scholarly journals Sonothrombolysis with magnetic microbubbles under a rotational magnetic field

Ultrasonics ◽  
2019 ◽  
Vol 98 ◽  
pp. 62-71 ◽  
Author(s):  
Bohua Zhang ◽  
Howuk Kim ◽  
Huaiyu Wu ◽  
Yu Gao ◽  
Xiaoning Jiang
Keyword(s):  
Magnetic Field ◽  
Rotational Magnetic Field

The Effect of a Rotational Magnetic Field on MCZ Crystal Growing

2008 ◽  
pp. 7-7-11 ◽  
Author(s):  
K Yamashita ◽  
S Kobayashi ◽  
T Aoki ◽  
Y Kawata ◽  
T Shiraiwa
Keyword(s):  
Magnetic Field ◽  
Rotational Magnetic Field

419 Experimental study on the transient velocity of the conductive fluid under the rotational magnetic field

2005 ◽  
Vol 2005 (0) ◽  
pp. 153-154
Author(s):  
Yoshikazu Naraki ◽  
Kentarou Etoh ◽  
Mituo Iwamoto ◽  
Masato Akamatsu ◽  
Hiroyuki Ozoe
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
Conductive Fluid ◽  
Rotational Magnetic Field ◽  
Transient Velocity

1C1 UVP measurement of transient CZ melt flow under the rotational magnetic field

2014 ◽  
Vol 2014 (0) ◽  
pp. _1C1-1_-_1C1-2_
Author(s):  
Megumi ASAHINA ◽  
Miyuki HONDA ◽  
Shinichi SAITO ◽  
Mituo IWAMOTO
Keyword(s):  
Magnetic Field ◽  
Melt Flow ◽  
Rotational Magnetic Field
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