scholarly journals Virtual Instrumentation for load cell signal processing

2020 ◽  
Vol 14 (2) ◽  
pp. 222-227
Author(s):  
Leonardo César Vega Gómez ◽  
Sonnia Pavoni Oliver ◽  
Dilaila Criado Cruz ◽  
Víctor Eugenio Escartín Fernández
Keyword(s):  
Signal Processing ◽  
Everyday Life ◽  
Digital Filter ◽  
Virtual Instrument ◽  
Moving Average ◽  
Load Cell ◽  
Strain Gauges ◽  
Virtual Instrumentation ◽  
Cell Signal ◽  
Load Cells

In different spheres of everyday life it is very important to determine the weight of substances, objects and peoples. Strain gauges are widely used in load cells for electronic scales. However, the signal from these transducers presents noise due to various factors. This work presents a virtual instrument developed in LabVIEW for acquisition and processing of the AC108B/BW load cell signal. A moving average digital filter was developed, in order to decrease the amplitude of the signal noise.

Research and Design of Virtual FIR Digital Filter Based on LabVIEW

2012 ◽  
Vol 241-244 ◽  
pp. 240-243
Author(s):  
Jun Liu ◽  
Rong Xing Guo
Keyword(s):  
Experimental Study ◽  
Signal Processing ◽  
Digital Filter ◽  
Virtual Instrument ◽  
Front Panel ◽  
Broad Application ◽  
Instrument Technology ◽  
Labview Platform ◽  
Research And Design ◽  
The Ideal

Digital filter technology is quite important in the signal processing field. This paper realizes digital filter designing by way of the virtual instrument technology, and this paper introduces the filter plat front panel and program frame diagram designing based on the FIR filter algorithm through the LabVIEW platform. Through the simulation, the virtual digital filter validates the designing accuracy. The digital filter achieves the ideal effect in filtering, which can be widely applied into the signal processing field, such as digital de-nosing, and experimental study, etc. Digital filter panel designing has broad application prospect and research value.

Virtual instrument designed for data acquisition

2020 ◽  
Vol 65 (1) ◽  
pp. 179-186
Author(s):  
Mihaela Dorica Stroia
Keyword(s):  
Software Development ◽  
Data Acquisition ◽  
Virtual Instrument ◽  
Virtual Instrumentation ◽  
Design And Implementation ◽  
Adequate Design

Current software development directions open up a world of possibilities, especially in the engineering field. Present paper is meant to highlight the advantages and in particular the ease of using virtual instrumentation facilities, with a proper and adequate design and implementation of desired instrument. In this idea we bring into discussion a design for virtual instrument which can be used for data acquisition that can be stored for further simulations according to the needs required by the process in discussion.

scholarly journals Open Source Digitally Replicable Lab-Grade Scales

2020 ◽  
Author(s):  
Benjamin R. Hubbard ◽  
Joshua M. Pearce
Keyword(s):  
Open Source ◽  
Low Cost ◽  
Cost Savings ◽  
Load Cell ◽  
Significant Cost ◽  
Load Cells ◽  
The Cost ◽  
Cell Data ◽  
Precision Balance ◽  
Multiple Load

This study provides designs for a low-cost, easily replicable open source lab-grade digital scale that can be used as a precision balance. The design is such that it can be manufactured for use in most labs throughout the world with open source RepRap-class material extrusion-based 3-D printers for the mechanical components and readily available open source electronics including the Arduino Nano. Several versions of the design were fabricated and tested for precision and accuracy for a range of load cells. The results showed the open source scale was found to be repeatable within 0.1g with multiple load cells, with even better precision (0.01g) depending on load cell range and style. The scale tracks linearly with proprietary lab-grade scales, meeting the performance specified in the load cell data sheets, indicating that it is accurate across the range of the load cell installed. The smallest loadcell tested(100g) offers precision on the order of a commercial digital mass balance. The scale can be produced at significant cost savings compared to scales of comparable range and precision when serial capability is present. The cost savings increase significantly as the range of the scale increases and are particularly well-suited for resource-constrained medical and scientific facilities.

scholarly journals ANALYSIS AND IMPROVISATION IN EXTRACTING AUDIO SIGNAL AMPLITUDE USING LABVIEW

2020 ◽  
pp. 273-278
Author(s):  
Adarsh V Srinivasan ◽  
Mr. N. Saritakumar
Keyword(s):  
Virtual Instrument ◽  
Sampling Rate ◽  
Audio Signal ◽  
Signal Amplitude ◽  
Audio Signals ◽  
Virtual Instrumentation ◽  
Audio Processing ◽  
Reading And Writing ◽  
Labview Software ◽  
Frequency Sampling

In this paper, either a pre-recorded audio or a newly recorded audio is processed and analysed using the LabVIEW Software by National Instruments. All the data such as bitrate, number of channels, frequency, sampling rate of the Audio are analyzed and improvising the signal by a few operations like Amplification, De-Amplification, Inversion and Interlacing of Audio Signals are done. In LabVIEW, there are a few Sub Virtual Instrument’s available for Reading and Writing Audio in .wav formats and using them and array Sub Virtual Instrument, all the processing are done. KEYWORDS: Virtual Instrumentation (VI), LabVIEW (LV), Audio, Processing, audio array.

A Load Cell System in Foot Pressure Analysis

1982 ◽  
Vol 11 (3) ◽  
pp. 121-122 ◽  
Author(s):  
W V James ◽  
J F Orr ◽  
T Huddleston
Keyword(s):  
Low Cost ◽  
Cell System ◽  
Load Cell ◽  
Foot Pressure ◽  
Cost System ◽  
Pressure Sensitive ◽  
Low Profile ◽  
Load Cells ◽  
Pressure Analysis

A method of displaying discrete areas of pressure beneath the foot has been produced. The device employs a pressure sensitive elastomer which gives quantitative readings of the pressure developed. The 512 load cells are enclosed in a low profile platform only one inch in depth which provides a low-cost system that can be employed in clinical situations.

Bearing Scuffing Detection and Condition Monitoring Using Virtual Instrumentation

2014 ◽  
Vol 657 ◽  
pp. 604-608 ◽  
Author(s):  
Carmen Bujoreanu ◽  
Florin Breabăn
Keyword(s):  
Condition Monitoring ◽  
Virtual Instrument ◽  
Friction Torque ◽  
Diagnostic Methods ◽  
Virtual Instrumentation ◽  
Friction Forces ◽  
Data Acquisition Board ◽  
Bearing Condition Monitoring ◽  
Braking Torque ◽  
Vibration Signature

Bearing condition monitoring confronts the most machine users. Diagnostic methods used to include bearing problems represent one of the most important challenges. The scuffing phenomenon initiation of the bearing elements produces an important increase in the vibration level and can be emphasized by the analysis of the bearing friction forces which are the most sensitive indicator of the bearing failure. Commonly used technique for damage detection is the vibration signature analysis that must be carefully utilized in conjunction with the friction torque monitoring through the strain gauges measurements. In order to detect the scuffing onset, the paper presents an experimental setup for the scuffing tests performed on a 7206 ball bearing. A virtual instrument monitoring the friction force respectively the braking torque was created. An accelerometer captures the signal from the bearing outer ring then it is processed using PCI-4451 National Instruments data acquisition board and LabVIEW soft.

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