Electroacoustic tomography system with nanosecond electric pulse excitation source

2019 ◽  
Author(s):  
Siqi Wang ◽  
Jack Merrill ◽  
Bin Zheng ◽  
Liangzhong Xiang ◽  
Ali Zarafshani
Keyword(s):  
Electric Pulse ◽  
Excitation Source ◽  
Pulse Excitation ◽  
Tomography System

Remarkable Enhancement in the Self-Pulsating Action of a Weakly-Index-Guided AlGaAs Laser Diode by Nanosecond Electric-Pulse Excitation

2009 ◽  
Author(s):  
Shunsuke Kono ◽  
Tomoyuki Oki ◽  
Takao Miyajima ◽  
Masaru Kuramoto ◽  
Hideki Watanabe ◽  
...  
Keyword(s):  
Laser Diode ◽  
Electric Pulse ◽  
The Self ◽  
Pulse Excitation

All solid state pulse excitation source for kHz excimer laser

2013 ◽  
Vol 25 (4) ◽  
pp. 885-559 ◽  
Author(s):  
王庆胜 Wang Qingsheng ◽  
游利兵 You Libing ◽  
余吟山 Yu Yinshan ◽  
赵家敏 Zhao Jiamin ◽  
方晓东 Fang Xiaodong
Keyword(s):  
Solid State ◽  
Excimer Laser ◽  
Excitation Source ◽  
Pulse Excitation

FPGA Based Excitation Source in Biomedical Electrical Impedance Tomography System

2011 ◽  
Vol 48-49 ◽  
pp. 537-540 ◽  
Author(s):  
Xiao Yan Chen ◽  
Jia Ni Wu
Keyword(s):  
Electrical Impedance Tomography ◽  
Electrical Impedance ◽  
Bioelectrical Impedance ◽  
Excitation Source ◽  
Digital Signals ◽  
Impedance Tomography ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Tomography System ◽  
Low Pass

An excitation source for biomedical electrical impedance tomography system based on FPGA is designed and implemented with 33 KHz bandwidth and adjustable phases. Codes are programmed with PicoBlaze instructions by Notepad++, and compiled to user programs by KCPSM3 assembler. Digital-analog conversion is carried out in interruption subroutine, the output digital signals are sampled at the setting frequency and filtered by a second-order Butterworth low-pass filter. The proposed method offers a novel effective and feasible approach to satisfy the requirements of excitation source in bioelectrical impedance tomography system.

Sign in / Sign up

Export Citation Format

Share Document