Based on Rotating Machinery Data Acquisition System Anti-Aliasing Filter Design and Application

2011 ◽  
Vol 328-330 ◽  
pp. 2328-2332
Author(s):  
Hai Yan Sun ◽  
Chun Liang Zhang ◽  
Sen Li
Keyword(s):  
Fault Diagnosis ◽  
Data Acquisition ◽  
Filter Design ◽  
Data Acquisition System ◽  
Rotating Machinery ◽  
Acquisition System ◽  
Design Requirement ◽  
Low Pass ◽  
Design Proposal ◽  
Hardware Circuit

In this work, on the basis of the analysis of the component of traditional data acquisition system, and in view of the design requirement of data acquisition system for the process of rotating machinery testing and fault diagnosis, adopt the integrated with AD module based on the 8th -order low pass elliptic switched-capacitor filter MAX297 for filtering, thereby proposes a portable data acquisition system. And it gives the design proposal of anti-aliasing filter according to the design requirement, and illustrates the principle of filtering and accomplished the corresponding hardware circuit. And this proposal of the filter can be used to other testing and fault diagnosis systems by adjusting the sampling frequency.

One Kind of Data Acquisition System Used in PC104 Embedded Navigation Computer

2013 ◽  
Vol 347-350 ◽  
pp. 24-27 ◽  
Author(s):  
Zhao Hua Liu ◽  
Yu Liang Mao ◽  
Chun Lei Song
Keyword(s):  
Data Acquisition ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Time Dynamic ◽  
Logic Control ◽  
Navigation Computer ◽  
Dynamic Navigation ◽  
Acquisition Speed ◽  
Hardware Circuit ◽  
Circuit Configuration

In order to meet requirements of real-time dynamic navigation system, one multi-channels synchronization data acquisition system was designed based on PC104 bus. It can achieve simultaneous sampling of multiple channels data in one conversion cycle of ADC. The logic control is performed by FPGA, FIFO integrated by FPGA is used as buffer, so we can use resources of FPGA in large. At the same time, this design simplified the hardware circuit and improved circuit configuration flexibility. Using interrupt mode to read data into the FIFO, so it enhanced the data acquisition speed and reduced the burden on the navigation computer. Tests proved this system is efficient and feasible.

scholarly journals Low-Cost, High-Frequency, Data Acquisition System for Condition Monitoring of Rotating Machinery through Vibration Analysis-Case Study

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3493
Author(s):  
César Ricardo Soto-Ocampo ◽  
José Manuel Mera ◽  
Juan David Cano-Moreno ◽  
José Luis Garcia-Bernardo
Keyword(s):  
Data Acquisition ◽  
Condition Monitoring ◽  
Vibration Analysis ◽  
Low Cost ◽  
Data Acquisition System ◽  
Sampling Frequency ◽  
Rotating Machinery ◽  
Acquisition System ◽  
Raspberry Pi

Data acquisition is a crucial stage in the execution of condition monitoring (CM) of rotating machinery, by means of vibration analysis. However, the major challenge in the execution of this technique lies in the features of the recording equipment (accuracy, resolution, sampling frequency and number of channels) and the cost they represent. The present work proposes a low-cost data acquisition system, based on Raspberry-Pi, with a high sampling frequency capacity in the recording of up to three channels. To demonstrate the effectiveness of the proposed data acquisition system, a case study is presented in which the vibrations registered in a bearing are analyzed for four degrees of failure.

Data Acquisition System Connect to CMG-3T Low-Frequency Seismic Pendulum

2013 ◽  
Vol 734-737 ◽  
pp. 2945-2948
Author(s):  
Ting Ting Liu ◽  
Yong Wu ◽  
Jun Lin
Keyword(s):  
Data Acquisition ◽  
Seismic Waves ◽  
Low Frequency ◽  
Data Acquisition System ◽  
Low Noise ◽  
Acquisition System ◽  
Power Module ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass

Aiming at the low-frequency performance of the lowfrequency seismic pendulum CMG -3T, we design a data acquisition system can acquire the low-frequency seismic waves, at the same time we accomplish the process of adjusting the CMG-3T. This paper gives designing scheme include the low noise design of the power module, the design of the connector to RS232 which can send command to adjusting the mass of CMG-3T,the design of voltage attenuation network and no-source low-pass filter network of data acquisition system, the last is the design of software for adjusting the CMG-3T.

scholarly journals Development of a Portable Field Machinery Data Acquisition System

1985 ◽  
Author(s):  
Ben J. Drinkwater ◽  
Chris Brashears ◽  
Dennis G. Wilson
Keyword(s):  
Data Acquisition ◽  
Computer Technology ◽  
Data Acquisition System ◽  
Rotating Machinery ◽  
Predictive Maintenance ◽  
Host Computer ◽  
Acquisition System ◽  
Portable Instrument ◽  
Digital Memory ◽  
Maintenance Program

This paper describes the development of a portable data acquisition system for use in a plant-wide, predictive maintenance program for rotating machinery. Designed to replace hand-logging and other clipboard surveillance methods, the portable instrument stores the measured parameters in digital memory for transfer to a desktop host computer for processing and analysis. Developments in electronics and computer technology as well as preventive/predictive maintenance procedures have made this instrument system possible. These developments are outlined, along with a discussion of the operation and use of the system.

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