Signal Conditioning, Data Acquisition, and Spectral Analysis

2005 ◽  
pp. 205-247
Keyword(s):  
Spectral Analysis ◽  
Data Acquisition ◽  
Signal Conditioning ◽  
Conditioning Data

scholarly journals The Design of a Chemical Virtual Instrument Based on LabVIEW for Determining Temperatures and Pressures

2007 ◽  
Vol 2007 ◽  
pp. 1-7 ◽  
Author(s):  
Wen-Bin Wang ◽  
Jang-Yuan Li ◽  
Qi-Jun Wu
Keyword(s):  
Physical Chemistry ◽  
Data Acquisition ◽  
Virtual Instrument ◽  
Serial Port ◽  
Signal Conditioning ◽  
Chemistry Research ◽  
Software Modules

A LabVIEW-based self-constructed chemical virtual instrument (VI) has been developed for determining temperatures and pressures. It can be put together easily and quickly by selecting hardware modules, such as the PCI-DAQ card or serial port method, different kinds of sensors, signal-conditioning circuits or finished chemical instruments, and software modules such as data acquisition, saving, proceeding. The VI system provides individual and extremely flexible solutions for automatic measurements in physical chemistry research.

Design of SPI Bus Communication in the Multi-Channel Data Acquisition Systems

2012 ◽  
Vol 532-533 ◽  
pp. 187-191
Author(s):  
Bei Yang ◽  
Xiao Wu Ding
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
System Structure ◽  
Signal Conditioning ◽  
Communication Design ◽  
Communication Interaction ◽  
Spi Bus ◽  
Speed And Accuracy ◽  
Signal Conditioning Circuit ◽  
Conditioning Circuit

the system structure of a multi-channel data acquirement system is introduced in this paper. The communication interaction circuit between the main control system and signal conditioning circuit is described. The SPI bus communication type is adopted between C8051F320 and FPGA. The speed and accuracy of datum transfer must be considered in the communication design, so the CRC calibration is used.

The Development of Rock Failure Electromagnetic Emission Monitoring System

2013 ◽  
Vol 330 ◽  
pp. 401-406
Author(s):  
Song Ling Huang ◽  
Fu Rong Zhu ◽  
Hong Xiu Zhu ◽  
Zheng Wei ◽  
Shen Wang
Keyword(s):  
Data Acquisition ◽  
Monitoring System ◽  
Electromagnetic Induction ◽  
Rock Fracture ◽  
Electromagnetic Emission ◽  
Rock Failure ◽  
Mine Safety ◽  
Signal Conditioning ◽  
Signal Conditioning Circuit ◽  
Conditioning Circuit

The research about electromagnetic emission (EME) during rock failure is very important to earthquake prediction and mine safety. A corresponding monitoring system has been developed according to the characteristics of EME signals during rock fracture, which include a wide frequency band and small amplitude of the inductive signals. The system is constituted by electromagnetic induction probe, signal-conditioning circuit and a computer for data acquisition. Among them, the electromagnetic induction probe can detect spatial magnetic field changes in a certain direction and convert it into electrical signals, the signal-conditioning circuit can magnify, filter and isolate signals acquired by the probe, and the computer for data acquisition is used for recording and displaying the detected signals. Several testing results have been achieved in rock failure experiments on marble that are carried out both by mechanical loading and expansion caused by chemical agents.

A Compact Portable Data Acquisition Module for Sports Biomechanics Research

1990 ◽  
Vol 6 (4) ◽  
pp. 404-414 ◽  
Author(s):  
Jeff Newmiller ◽  
Maury L. Hull
Keyword(s):  
Data Acquisition ◽  
General Purpose ◽  
Battery Pack ◽  
Digital Data ◽  
Signal Conditioning ◽  
Maximum Throughput ◽  
Analog To Digital ◽  
Portable Power ◽  
Temporary Storage ◽  
Data Acquisition Module

This article describes a new portable digital data acquisition module, which has been developed for the measurement and temporary storage of signals from mobile biomechanical phenomena in the field. The module’s performance capabilities include 32 available analog input channels, a 12-bit analog-to-digital converter, maximum throughput of 57,040 samples per second, and a temporary storage capacity of up to 253,000 samples. The portable power source is a rechargeable battery pack, and the appropriate sensors and sensor signal conditioning circuits are supplied by the user to meet the particular needs of the phenomena under study. The size of the signal conditioning, battery pack, and data acquisition module is such that it can be carried in a belt pack worn by a subject under study and weighs less than 3 kgf. To facilitate the use of the module, operating software complements the hardware. The software is comprehensive functionally in that routines are provided for acquiring data, for transferring acquired data serially to a general purpose microcomputer for storage on magnetic media, and for monitoring equipment setup. Further, the software is versatile in that the various parameters necessary to customize the operation to a particular application may be readily set. Finally, the menu-driven structure ensures that the software is easy to use.

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