A wireless flexible temperature and tactile sensing array for robot applications
2008
The development of a flexible 8x8 temperature and tactile sensing array, which will serve as the artificial skin for robot
applications, is presented in this work. Pressure conductive rubber is employed as the tactile sensing material, and
discrete temperature sensor chips are employed as the temperature sensing cells. Small disks of pressure conductive
rubber are bonded on pre-defined interdigital copper electrode pairs which are patterned on a flexible copper-PI substrate
which is fabricated by micromachining techniques. This approach can effectively reduce the crosstalk between each
tactile sensing element. The mechanical and electrical properties of tactile sensing elements are measured. Also,
scanning circuits are designed and implemented. The temperature and tactile sensing elements are heterogeneously
integrated on the flexible substrate. By using the integrated 8x8 sensing arrays, temperature and tactile images induced
by the heaters/stamps of different shapes have been successfully measured. Radio-frequency (RF) wireless modules are
also developed and integrated on the skin system.
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