Data Acquisition and Software for the Multicomponent Piezoelectric Force Plate

2009 ◽  
pp. 147-147-10
Author(s):  
DA Schieb
Keyword(s):  
Data Acquisition ◽  
Force Plate

scholarly journals Design and construction of a 3D force plate prototype for developing an instrumented swimming start block

2016 ◽  
Vol 2 (2) ◽  
pp. 99 ◽  
Author(s):  
Luis Mourão ◽  
Karla De Jesus ◽  
Nuno Viriato ◽  
Ricardo J. Fernandes ◽  
João Paulo Vilas-Boas ◽  
...  
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Force Plate ◽  
Movement Analysis ◽  
Human Movement ◽  
Calibration Procedure ◽  
Main Concern ◽  
Vertical Force ◽  
Competitive Swimming ◽  
Design And Construction

Force plates have been used in human movement analysis to measure ground reaction forces, centre of pressure (COP) and derived kinetic quantities. In competitive swimming external tridimensional (3D) forces assessment is crucial to improve starting technique performance. This work aimed to describe the design and construction of a 3D force plate prototype, which might be a modular sensor of an instrumented swimming starting block. For this purpose four steps were followed: 1) numerical determination of sensor conspicuous spatial positioning; 2) development of a first test device and respective calibration procedures; 3) final prototype (3D force plate) development and implementation; and 4) development and programming of a high speed multiple data acquisition system. Vertical force (< 140 N ± 5%) and COP real time determination (± 3% to centre distance uncertainty) are compliant with the literature data and horizontal force is assessed based on COP displacement time derivatives. The software for data acquisition and interpretation was developed, leading to calibration procedure that provides a set of gains for sequential balance protocol and final transfer matrix. Although the final prototype implementation was the main concern of the current study, its development also has proven to be an important milestone for a dynamometric swimming start block advance.

scholarly journals Determinação dos eventos da marcha com diferentes frequências de aquisição em plataformas de força

2016 ◽  
Vol 85 (3) ◽  
Author(s):  
Mateus Corrêa Silveira ◽  
Francielle Marques Pivetta ◽  
Carlos Bolli Mota
Keyword(s):  
Data Collection ◽  
Data Acquisition ◽  
Gait Analysis ◽  
Kinetic Data ◽  
Force Plate ◽  
Heel Strike ◽  
Kinematic Data ◽  
Detection Delay ◽  
Different Populations ◽  
Event Times

Introdução: A análise da marcha permite avaliar parâmetros da marcha de diferentes populações. Frequentemente essas variáveis estão associadas aos eventos que determinam as fases da marcha: o toque do calcanhar e a saída do pé. Os dados fornecidos por plataformas de força são considerados ideais para detectar o instante correto desses eventos, mas o efeito de diferentes frequências de aquisição adotadas para determiná-los não é muito conhecido.Objetivo: Determinar o efeito de diferentes frequências de aquisição de plataformas de força para detectar os eventos da marcha.Métodos: Um homem adulto caminhou na sua velocidade preferida. Os dados cinéticos foram obtidos por duas plataformas de força com frequências de aquisição em 1000 Hz. Após as coletas, os dados foram amostrados novamente em 500 Hz, 250 Hz, 200 Hz e 100 Hz, removendo amostras a partir eliminação de múltiplos. Dois limiares de força foram adotados na detecção dos dois eventos: 5 Newtons e 20 Newtons.Resultados: Os resultados mostraram diferenças entre todas as frequências de aquisição, exceto 250 Hz e 200 Hz, para o toque do calcanhar e a saída do pé em ambos os limiares de força. Um atraso na detecção dos eventos foi observado à medida que a frequência de aquisição diminuía.Conclusão: Maiores frequências de aquisição das plataformas são mais apropriadas para a detecção dos eventos da marcha. Os dados cinéticos podem ser mais precisos para definir os tempos de apoio e balanço do que dados cinemáticos.Determination of Gait Events with Different Force Plate Acquisition FrequenciesIntroduction: Gait analysis allows assessing walking parameters of different populations. Frequently, these variables are associated with events which determine the phases of the gait: the heel strike and the foot off. Data provided by force plates are considered a good mean to detect precise event times, however the effect of different data acquisition frequencies adopted are still unknown.Objective: To determine the effect of different acquisition frequencies of force plates on gait events detection.Introduction: Gait analysis allows assessing walking parameters of different populations. Frequently, these variables are associated with events which determine the phases of the gait: the heel strike and the foot off. Data provided by force plates are considered a good mean to detect precise event times, however the effect of different data acquisition frequencies adopted are still unknown.Methods: An adult man walked in his preferred gait speed. Kinetic data were obtained by two force plates with acquisition frequency of 1000 Hz. After data collection, the data was resampled again in 500 Hz, 250 Hz, 200 Hz e 100 Hz, removing samples by eliminating multiples. Two force thresholds were adopted to detect gait events: 5 Newtons e 20 Newtons.Results: Differences between all frequencies of acquisition were shown, except between 250 Hz and 200 Hz, for both heel strike and foot off and force thresholds. A detection delay is observed as the acquisition frequency decrease.Conclusion: Higher force plates acquisition frequencies are better to detect gait events Kinect data can be more accurate to define stance and swing times than kinematic data.

INES MOVIES : A NEW ACOUSTIC DATA ACQUISITION AND PROCESSING SYSTEM

1990 ◽  
Vol 51 (C2) ◽  
pp. C2-939-C2-942 ◽  
Author(s):  
N. DINER ◽  
A. WEILL ◽  
J. Y. COAIL ◽  
J. M. COUDEVILLE
Keyword(s):  
Data Acquisition ◽  
Processing System ◽  
Acoustic Data ◽  
Data Acquisition And Processing

Force Plate Analysis of Dogs with Bilateral Hip Dysplasia Treated with a Unilateral Triple Pelvic Osteotomy: A Long-term Review of Cases

1998 ◽  
Vol 11 (02) ◽  
pp. 85-93 ◽  
Author(s):  
Joanne R. Cockshutt ◽  
H. Dobson ◽  
C. W. Miller ◽  
D. L. Holmberg ◽  
Connie L. Taves ◽  
...  
Keyword(s):  
Gait Analysis ◽  
Hip Dysplasia ◽  
Weight Bearing ◽  
Force Plate ◽  
Case Series ◽  
Pelvic Osteotomy ◽  
Vertical Force ◽  
Long Term Outcome ◽  
Case Series Study

SummaryA retrospective case series study was done to determine the long-term outcome of operations upon dogs treated for canine hip dysplasia by means of a triple pelvic osteotomy (TPO). Twentyfour dogs with bilateral hip dysplasia, that received a unilateral TPO between January 1988 and June 1995, were re-examined at the Ontario Veterinary College. The assessment included physical, orthopedic and lameness examinations, standard blood work, pelvic radiographs and force plate gait analysis. They were compared to bilaterally dysplastic dogs that had not been treated, and also to normal dogs. Force plate data analysis demonstrated a significant increase in peak vertical force (PVF) and mean vertical force over stance (MVF) in the limb that underwent surgical correction by means of a TPO, when compared to the unoperated hip. It was determined that performing a unilateral TPO on a young dysplastic dog resulted in greater forces and weight bearing being projected through the TPO corrected limb when compared to the unoperated limb.Dogs with bilateral hip dysplasia treated with a unilateral triple pelvic osteotomy (TPO) were assessed by force plate gait analysis, radiographs and orthopedic examination. There was a significant increase in hip Norberg angles over time, although degenerative changes did progress. Limbs that had been operated upon had significantly greater peak and mean ground reaction forces than limbs that had not received an operation.

Multidetector-row Computed Tomography in the Assessment of Coronary Artery Disease – New Techniques and Insights

2010 ◽  
Vol 6 (2) ◽  
pp. 43 ◽  
Author(s):  
Andreas H Mahnken ◽  
Keyword(s):  
Computed Tomography ◽  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Data Acquisition ◽  
Temporal Resolution ◽  
High Temporal Resolution ◽  
Multidetector Row ◽  
Ct Scanners ◽  
Artery Disease ◽  
Cardiac Mdct

Over the last decade, cardiac computed tomography (CT) technology has experienced revolutionary changes and gained broad clinical acceptance in the work-up of patients suffering from coronary artery disease (CAD). Since cardiac multidetector-row CT (MDCT) was introduced in 1998, acquisition time, number of detector rows and spatial and temporal resolution have improved tremendously. Current developments in cardiac CT are focusing on low-dose cardiac scanning at ultra-high temporal resolution. Technically, there are two major approaches to achieving these goals: rapid data acquisition using dual-source CT scanners with high temporal resolution or volumetric data acquisition with 256/320-slice CT scanners. While each approach has specific advantages and disadvantages, both technologies foster the extension of cardiac MDCT beyond morphological imaging towards the functional assessment of CAD. This article examines current trends in the development of cardiac MDCT.

Development of a Low Frequency Electric Field Probe Integrating Data Acquisition and Storage

2020 ◽  
Vol E103.C (8) ◽  
pp. 345-352
Author(s):  
Zhongyuan ZHOU ◽  
Mingjie SHENG ◽  
Peng LI ◽  
Peng HU ◽  
Qi ZHOU
Keyword(s):  
Electric Field ◽  
Data Acquisition ◽  
Low Frequency ◽  
Frequency Electric Field ◽  
Electric Field Probe ◽  
And Storage

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.

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