PLANTOGRAF V07 Jaromír Volf, Stanislava Papežová, Josef Vlček, Petr Novák, René Neděla Czech...
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Transcript of PLANTOGRAF V07 Jaromír Volf, Stanislava Papežová, Josef Vlček, Petr Novák, René Neděla Czech...
PLANTOGRAF V07
Jaromír Volf, Stanislava Papežová,Josef Vlček, Petr Novák, René Neděla
Czech Technical University in PragueFaculty of Mechanical Engineering
Czech Republic
INTRODUCTION
Measurement of pressure distribution on contact human body with environment belongs to important non-invasive diagnostic methods that used not only in medicine. This transducer exploitation is supposed especially in area medical orthopedics and biomechanics for study pressure distribution on sole and its dynamic change during footstep.
CONSTRUCTION
1 – cover layer
2 – slip layer
3 – upper electrode CUFLEX
4 – conductive elastic material CS 57-7 RSC
5 – lower electrode CUFLEX
6 – antistatic layer
7 – duralumin desk
8 – antistatic layer
12
34 5
67
8
TECHNICAL PARAMETERS
Patient Mass to 120 kg
Rated Pressure Range 5 - 80 kPa
Permissible Overload 1.4 MPa
Transducer Activated Area 400 x 300 mm
Transducer Dimensions 750 x 650 mm
Sensing Elements Number 7500 pcs
Dimension of Sensor 3x3 mm
Transducer Supply Voltages + 5V + 12 V
Transducer Analogue Outputto 1V
Digital Output 256 levels
Snap Frequency 300 Hz
Sampling Frequency 2.5 MHz
SYSTEM MODES
Continuous visualization. Shows actually pressure distribution on transducer. Data are direct transferred to PC. It is possible to be seen up to 10 snaps per second.
Accuracy measurement. Measured data aren't direct visualized, but data are saved in the HDD and later these ones are transferred to PC - to be visualized Snaps number can be up to 300 snaps per second. Record time is 4 hours for 160 GB HDD.
PARAMETERS
Measurement speed
Signal gain from transducer in range from 0,5 to 5
Zero shift input signal
Mode recording start
immediate from PC external by transducer activation, e.g. by step contact
1 Working window
2 Region
3 Dialog menu
4 Pressure distribution in cut
5 Information about region
6 Vertical cut
MEASUREMENT RESULTS
2D VISUALIZATION
3D VISUALIZATION
DEFECTS
NEWS
using HDD flash memory for ultra speed
records
version with COMPACT FLASH
USB with optical separation in lieu of
parallel port
increasing of snap frequency
Thank you for your attention