A Soft Multi-Axis Force Sensor

Daniel Vogt, Yong-Lae Park, and Robert J. Wood
Proceedings of the IEEE Sensors 2012 Conference, October, 2012, pp. 897-900.

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Thin, highly compliant sensing skins could provide valuable information for a host of grasping and locomotion tasks with minimal impact on the host system. We describe the design, fabrication and characterization of a novel soft multi-axis force sensor made of highly deformable materials. The sensor is capable of not only measuring normal force and but also 2D in-plane forces. This soft sensor is composed of an elastomer (modulus: 69 kPa) embedded with microchannels filled with conductive liquid. Depending on the intensity and the direction of an applied force, the cross-section of some of the channels will be compressed, changing its electrical resistance. The channel dimensions of the current prototype are 200 um x 200 um and the overall size of the sensor is 50 mm x 60 mm x 7 mm. Characterization results showed sensitivities in the two principal in-plane directions of 37.0 mV/N and -28.6 mV/N, respectively.

Number of pages: 4

Text Reference
Daniel Vogt, Yong-Lae Park, and Robert J. Wood, "A Soft Multi-Axis Force Sensor," Proceedings of the IEEE Sensors 2012 Conference, October, 2012, pp. 897-900.

BibTeX Reference
   author = "Daniel Vogt and Yong-Lae Park and Robert J. Wood",
   title = "A Soft Multi-Axis Force Sensor",
   booktitle = "Proceedings of the IEEE Sensors 2012 Conference",
   pages = "897-900",
   month = "October",
   year = "2012",