Vacuum leakage location based on cross-correlation wavenumber domain imaging method with a 64-element ultrasonic sensor array

2021 ◽  
Vol 92 (9) ◽  
pp. 094902
Author(s):  
Lei Qi ◽  
Xiaobo Rui ◽  
Yu Zhang ◽  
Lichen Sun ◽  
Yue Zheng
Keyword(s):  
Cross Correlation ◽  
Sensor Array ◽  
Ultrasonic Sensor ◽  
Imaging Method ◽  
Wavenumber Domain ◽  
Leakage Location

Leakage location on a stiffened structure based on ultrasonic sensor array

2021 ◽  
Author(s):  
Xiaobo Rui ◽  
Lixin Xu ◽  
Yu Zhang ◽  
Lei Qi ◽  
Ningbo Shi
Keyword(s):  
Sensor Array ◽  
Ultrasonic Sensor ◽  
Leakage Location

scholarly journals Phaseless Imaging by Reverse Time Migration: Acoustic Waves

2017 ◽  
Vol 10 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Zhiming Chen ◽  
Guanghui Huang
Keyword(s):  
Acoustic Waves ◽  
Numerical Experiments ◽  
Cross Correlation ◽  
Scattering Data ◽  
Imaging Method ◽  
Total Field ◽  
Reverse Time ◽  
Reverse Time Migration ◽  
Time Migration ◽  
Imaging Results

AbstractWe propose a reliable direct imaging method based on the reverse time migration for finding extended obstacles with phaseless total field data. We prove that the imaging resolution of the method is essentially the same as the imaging results using the scattering data with full phase information when the measurement is far away from the obstacle. The imaginary part of the cross-correlation imaging functional always peaks on the boundary of the obstacle. Numerical experiments are included to illustrate the powerful imaging quality

scholarly journals Gas Leak Location Detection Based on Data Fusion with Time Difference of Arrival and Energy Decay Using an Ultrasonic Sensor Array

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2985 ◽  
Author(s):  
Tao Wang ◽  
Xiaoran Wang ◽  
Mingyu Hong
Keyword(s):  
Data Fusion ◽  
Sensor Array ◽  
Three Dimensional ◽  
Energy Decay ◽  
Ultrasonic Sensor ◽  
Time Difference Of Arrival ◽  
Leak Location ◽  
Gas Leak ◽  
Location Algorithm ◽  
The Individual

Ultrasonic gas leak location technology is based on the detection of ultrasonic waves generated by the ejection of pressured gas from leak holes in sealed containers or pipes. To obtain more accurate leak location information and determine the locations of leak holes in three-dimensional space, this paper proposes an ultrasonic leak location approach based on multi-algorithm data fusion. With the help of a planar ultrasonic sensor array, the eigenvectors of two individual algorithms, i.e., the arrival distance difference, as determined from the time difference of arrival (TDOA) location algorithm, and the ratio of arrival distances from the energy decay (ED) location algorithm, are extracted and fused to calculate the three-dimensional coordinates of leak holes. The fusion is based on an extended Kalman filter, in which the results of the individual algorithms are seen as observation values. The final system state matrix is composed of distances between the measured leak hole and the sensors. Our experiments show that, under the condition in which the pressure in the measured container is 100 kPa, and the leak hole–sensor distance is 800 mm, the maximum error of the calculated results based on the data fusion location algorithm is less than 20 mm, and the combined accuracy is better than those of the individual location algorithms.

Proposal of an ultrasonic sensor array with flexible and scalable organization

2018 ◽  
Vol 24 (2) ◽  
pp. 189-194
Author(s):  
Yuichi Morita ◽  
Sota Kono ◽  
Akira Yamawaki
Keyword(s):  
Sensor Array ◽  
Ultrasonic Sensor

scholarly journals Reconstruction of Temperature Distribution in a Steel Block Using an Ultrasonic Sensor Array

2014 ◽  
Vol 33 (3) ◽  
pp. 458-470 ◽  
Author(s):  
A. Gajdacsi ◽  
A. J. C. Jarvis ◽  
P. Huthwaite ◽  
F. B. Cegla
Keyword(s):  
Temperature Distribution ◽  
Sensor Array ◽  
Ultrasonic Sensor
Sign in / Sign up

Export Citation Format

Share Document