Camera-based sensors for smart robots

Camera-based tactile sensor

Tactile sensors provide a pressure or contact profile, similar to touch we feel on our skin. They offer rich feedback about the grasping process and are thus essential for adaptive and sensitive grasping processes. RoVi's camera-based solution requires only a passive and low-cost foam bar on the fingers, which deforms on pressure. Our image processing software derives a tactile signal from the observed deformation.

Interactive demo: Drag the objects to the finger to see the tactile profile

Pressure [MPa]

Tactile Pressure Profile

Highlights

  • Tactile profile:
    Touch feedback for gripper fingers
  • Passive element:
    No electronics/wiring on the fingers
  • Remote sensing:
    External camera on gripper (eye-in-hand), or nearby
  • Virtual sensor:
    Tactile signal from image processing

Development kit

Our kit contains everything you need to get started quickly with tactile sensing. Contact us for options and availablity.

  • Sensitive element (rubber foam bar), with mounts for common grippers
  • USB3 camera
  • Sensor software with ROS integration
  • Bootable USB stick
  • Web-based interface

Technical data

Application Gripper finger, eye-in-hand camera High-end camera
Deformable element EPDM (Rubber foam)
Sensor length * 20  to 150 mm typ.
Data points 1x20 to 1x150 (1 point/mm length)
Maximum pressure * 100 kPa – 1 MPa
Trigger level 5% typ.
Noise level 2% typ.
Sampling rate 60-120 Hz (camera framerate)
Software Sensor software running on ROS/Linux
Camera USB3 Vison, Standard USB UVC, etc.

*: Adjustable values
Values are given for a typical camera setup: Full HD camera, 30 cm distance.

Inquiry

Please contact us to know more about our products/solutions. They are currently available for prototype/lab/pilot applications. We are happy to provide you with a free evaluation of your use case!

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RoVi Robot Vision
TU Munich, LMT
Arcisstr. 21
80333 Munich, Germany
Sponsored by: