This deals with briefly listing different methods of achieving tactile (touch) sensing, and then some commercial tactile sensors available in the industry. Finally, a comparison has been made among them.

1. Nirma University
TACTILE SENSING TECHNIQUES
AND COMPARATIVE ANALYSIS
OF COMMERCIAL SENSORS
Aasheesh Tandon Paxaj Shukla Himanshu K Patel

2. • Interpretation of Tactile
• Tactile Sensing
• Parameters measured: pressure distribution, thermal
conductivity, etc.
• Performance Criteria: Sensitivity, Dynamic Range, Linearity,
etc.
INTRODUCTION

3. • Resistive
• Capacitive
• Inductive
TACTILE SENSING: TRANSDUCTION
METHODS
Capacitive Transduction

4. • Piezoresistive
• Piezoelectric
• Magnetic
TACTILE SENSING: TRANSDUCTION
METHODS
Magnetic Transduction

5. • Optoelectric
• Ultrasonic
• Tunnel Effect
TACTILE SENSING: TRANSDUCTION
METHODS
Proposed sensing mechanism for a force sensor
using QTC

6. • Capacitive Type
• Variable Resistive Type
• Conductive Rubber type
• Quantum Tunnelling Composite Type
COMMERCIAL TACTILE SENSORS

7. Capacitive Type
Leading Manufacturer: Pressure Profile Systems, Inc.
Product Name: DigiTacts System
COMMERCIAL TACTILE SENSORS

8. Sensor Characteristics and
Performance
– Pressure Range: 5, 20 or 40
– Pressure Sensitivity: 0.2%
– Signal to Noise Ratio (SNR):700:1
– Repeatability Error: 0.5%
– Linearity: 99.7%
ELECTRONICS SPECIFICATIONS
– Sample Rate: 30-100Hz
– Computer Interface: Bluetooth
– ADC Resolution: 16 bit
– Input Voltage: 5V
– Input Power: 2.5W
COMMERCIAL TACTILE SENSORS :
CAPACITIVE

9. Conductive Rubber Type
Leading Manufacturer: Weiss Robotics
Product Name:
i) DSA 9330/5: Highly Miniaturized Tactile Transducers for
Handling Tasks
ii) DSA 9205: Tactile Transducer for Handling Tasks
COMMERCIAL TACTILE SENSORS

10. DSA 9330
Power Supply
• 5V ± 10 %, 10mA
• Spatial Resolution
• 3.8 mm
• Operational Temperature Range
• 40° C
• Media Connected Parts
• Stainless Steel, Silicone Rubber
DSA 9205
Power Supply
• 5V ± 10 %, 10mA
• Spatial Resolution
• 3.4 mm
• Operational Temperature Range
• 0-40°C
• Measurement Range
• 250 kPa
COMMERCIAL TACTILE SENSORS:
CONDUCTIVE RUBBER

11. • Variable Resistance Type Tactile Sensors
Leading Manufacturer: Spectra Symbol
Product Name:
i) SoftPot Membrane Potentiometer
ii) HotPot Membrane Potentiometer
iii) ThinPot Membrane Potentiometer
COMMERCIAL TACTILE SENSORS

12. COMMERCIAL TACTILE SENSORS: VARIABLE
RESISTANCE TYPE

13. • Quantum Tunneling Composite Type Tactile Sensor
• Leading Manufacturer: Peratech Holdco Ltd
Product Name: QTC Touch Processing Unit
COMMERCIAL TACTILE SENSORS

14. COMMERCIAL TACTILE SENSORS: A
COMPARISON

15. THANK YOU !