An Efficient Data Acquisition System for Three-Dimensional Ultrasonic Imaging

1992 ◽  
pp. 263-267
Author(s):  
Ja Il Koo ◽  
Song Bai Park
Keyword(s):  
Data Acquisition ◽  
Ultrasonic Imaging ◽  
Three Dimensional ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Efficient Data

scholarly journals RECONSTRUCTION OF INDOOR MODELS USING POINT CLOUDS GENERATED FROM SINGLE-LENS REFLEX CAMERAS AND DEPTH IMAGES

2015 ◽  
Vol XL-4/W5 ◽  
pp. 99-102
Author(s):  
F. Tsai ◽  
T.-S. Wu ◽  
I.-C. Lee ◽  
H. Chang ◽  
A. Y. S. Su
Keyword(s):  
Data Processing ◽  
Data Acquisition ◽  
Three Dimensional ◽  
Point Clouds ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Indoor Environments ◽  
Single Lens ◽  
Processing Procedure ◽  
Data Processing Procedure

This paper presents a data acquisition system consisting of multiple RGB-D sensors and digital single-lens reflex (DSLR) cameras. A systematic data processing procedure for integrating these two kinds of devices to generate three-dimensional point clouds of indoor environments is also developed and described. In the developed system, DSLR cameras are used to bridge the Kinects and provide a more accurate ray intersection condition, which takes advantage of the higher resolution and image quality of the DSLR cameras. Structure from Motion (SFM) reconstruction is used to link and merge multiple Kinect point clouds and dense point clouds (from DSLR color images) to generate initial integrated point clouds. Then, bundle adjustment is used to resolve the exterior orientation (EO) of all images. Those exterior orientations are used as the initial values to combine these point clouds at each frame into the same coordinate system using Helmert (seven-parameter) transformation. Experimental results demonstrate that the design of the data acquisition system and the data processing procedure can generate dense and fully colored point clouds of indoor environments successfully even in featureless areas. The accuracy of the generated point clouds were evaluated by comparing the widths and heights of identified objects as well as coordinates of pre-set independent check points against in situ measurements. Based on the generated point clouds, complete and accurate three-dimensional models of indoor environments can be constructed effectively.

An Efficient Data Acquisition System for Automatic Transmission

2012 ◽  
Vol 239-240 ◽  
pp. 865-868
Author(s):  
Chun Fu Li ◽  
Yan Qin Li
Keyword(s):  
Data Acquisition ◽  
Virtual Instrument ◽  
Automatic Transmission ◽  
Sampling Rate ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Transmission Oil ◽  
Data Acquisition Card ◽  
Efficient Data ◽  
Armored Vehicle

A data acquisition system for electronic automatic transmission test, which makes use of American NI’s data acquisition card, is designed based on Virtual Instrument. The data can be collected by the data acquisition system include automatic transmission oil pressure, solenoid duty, as well as speed of turbine and output shaft of transmission and throttle degree of engine and so on. The key problems of the system design are measurement method of automatic transmission solenoid duty, signal conditioning circuit design and how to improve sampling rate of the system. Test platform is of a armored vehicle which has equipped a high-power electronic automatic transmission. The automatic transmission shift control strategy and characteristics of throttle oil pressure etc can be obtained through test data acquisition.

Fast and Efficient Data Acquisition System for Ubiquitous Participation in DEC Experiment on GAMMA 10

2007 ◽  
Vol 51 (2T) ◽  
pp. 394-396
Author(s):  
H. Yonemori ◽  
Y. Yasaka ◽  
H. Takeno ◽  
T. Yamamoto ◽  
Y. Nakashima ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Efficient Data

scholarly journals Three-dimensional fluence rate measurement and data acquisition system for minimally invasive light therapies

2009 ◽  
Vol 80 (4) ◽  
pp. 043104
Author(s):  
Benjamin Lai ◽  
Maxim Loshchenov ◽  
Alexander Douplik ◽  
Rob Rusnov ◽  
Marcos Jimenez-Davila ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Data Acquisition ◽  
Three Dimensional ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Fluence Rate ◽  
Rate Measurement

scholarly journals Pengembangan Array sensor Suhu dan Sistem Akusisi Data Berbasis Mikrokontroler untuk Pengukuran Suhu Bawah Permukaan

Jurnal MIPA ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 66
Author(s):  
Verna Albert Suoth ◽  
Didik R. Santoso ◽  
Sukir Maryanto
Keyword(s):  
Data Acquisition ◽  
Measurement Techniques ◽  
Control Unit ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Subsurface Temperature ◽  
Field Bus ◽  
Microsoft Excel ◽  
Array Sensor ◽  
Efficient Data

Dalam penelitian ini dikembangkan sebuah sistem akusisi data untuk survei panas bumi. Untuk menghasilkan sistem instrumentasi yang mampu mengukur dan memonitor distribusi suhu bawah permukaan diperlukan sistem akusisi data yang murah dan efesien. Sistem dibangun berbasis jaringan sistem terdistribusi dengan topologi field-bus, menggunakan arsitektur single-master multi-slave. Master merupakan unit pengendali, dibangun berbasiskan sebuah PC yang dilengkapi dengan antarmuka RS-485. Slave merupakan unit sensing, tiap-tiap unit slave dibangun dengan mengintegrasikan sistem array sensor LM35 dengan sistem akuisisi data berbasis mikrokontroler menggunakan AVR ATmega8. Pengolahan data dari hasil pengukuran suhu ini menggunakan satu set komputer dengan perangkat lunak microsoft excel 2010 untuk menghasilkan grafik pada titik pengukuran. Hasil implementasi dari monitoring suhu ini akan mengambarkan distribusi suhu bawah permukaan tanah.A data acquisition system for geothermal survey was developed in this research. Cheap and efficient data acquisition system was required to produce the instrumentation system which was capable to measure and monitor the distribution of subsurface temperature. The system consists of field-bus topology, using single-master multi-slave architecture. Master is a control unit built based on a PC equipped with RS-485 interface. Slave is a sensing unit; each slave is built by integrating array sensor LM35 within AVR ATmega8a microcontroller-based data acquisition system. Measurement techniques included sounding and mapping system by placing four slaves planted in the depth of 2.5 m. Processing of data obtained from temperature measurements was performed using Microsoft Excel 2010 to produce graphics at point of measurement. The results of temperature monitoring will described the distribution of subsurface temperature.

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