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Sensors 2014, 14(2), 2225-2238; doi:10.3390/s140202225
Article

A Two-Ply Polymer-Based Flexible Tactile Sensor Sheet Using Electric Capacitance

1,2,* , 1
, 1,2
 and 2
Received: 24 December 2013; in revised form: 14 January 2014 / Accepted: 23 January 2014 / Published: 29 January 2014
(This article belongs to the Special Issue Tactile Sensors and Sensing Systems)
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Abstract: Traditional capacitive tactile sensor sheets usually have a three-layered structure, with a dielectric layer sandwiched by two electrode layers. Each electrode layer has a number of parallel ribbon-like electrodes. The electrodes on the two electrode layers are oriented orthogonally and each crossing point of the two perpendicular electrode arrays makes up a capacitive sensor cell on the sheet. It is well known that compatibility between measuring precision and resolution is difficult, since decreasing the width of the electrodes is required to obtain a high resolution, however, this may lead to reduction of the area of the sensor cells, and as a result, lead to a low Signal/Noise (S/N) ratio. To overcome this problem, a new multilayered structure and related calculation procedure are proposed. This new structure stacks two or more sensor sheets with shifts in position. Both a high precision and a high resolution can be obtained by combining the signals of the stacked sensor sheets. Trial production was made and the effect was confirmed.
Keywords: capacitive tactile sensor; tactile sensor; flexible sensor; polymer; conductive rubber; screen printing capacitive tactile sensor; tactile sensor; flexible sensor; polymer; conductive rubber; screen printing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Guo, S.; Shiraoka, T.; Inada, S.; Mukai, T. A Two-Ply Polymer-Based Flexible Tactile Sensor Sheet Using Electric Capacitance. Sensors 2014, 14, 2225-2238.

AMA Style

Guo S, Shiraoka T, Inada S, Mukai T. A Two-Ply Polymer-Based Flexible Tactile Sensor Sheet Using Electric Capacitance. Sensors. 2014; 14(2):2225-2238.

Chicago/Turabian Style

Guo, Shijie; Shiraoka, Takahisa; Inada, Seisho; Mukai, Toshiharu. 2014. "A Two-Ply Polymer-Based Flexible Tactile Sensor Sheet Using Electric Capacitance." Sensors 14, no. 2: 2225-2238.


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