1. PLANTOGRAF V07 Jaromír Volf, Stanislava Papežová, Josef Vlček, Petr Novák, René Neděla Czech Technical University in Prague Faculty of Mechanical Engineering Czech Republic jaromir.volf@fs.cvut.cz

2. 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.

3. 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

4. TECHNICAL PARAMETERS Patient Massto 120 kg Rated Pressure Range5 - 80 kPa Permissible Overload 1.4 MPa Transducer Activated Area400 x 300 mm Transducer Dimensions750 x 650 mm Sensing Elements Number7500 pcs Dimension of Sensor3x3 mm Transducer Supply Voltages+ 5V  + 12 V Transducer Analogue Outputto 1V Digital Output256 levels Snap Frequency 300 Hz Sampling Frequency2.5 MHz

5. 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.

6. 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

7. 1 Working window 2 Region 3 Dialog menu 4 Pressure distribution in cut 5 Information about region 6 Vertical cut MEASUREMENT RESULTS

8. 2D VISUALIZATION

9. 3D VISUALIZATION

10. DEFECTS

12. 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

13. Thank you for your attention