Interface Circuits Based on FPGA for Tactile Sensor Systems

Development of tactile sensing systems is motivated by the possibility of application in many domains such as robotics, prosthetics, and industrial automation. This paper provides a functionality assessment of an interface electronic circuit prototype for tactile sensing systems. The circuits are based on the DDC112U and an FPGA Xilinx Spartan-6. An experimental setup is carried out to measure the signals generated from a single tactile sensor. Experimental results validate the correct functionality of the proposed interface when the measured voltage and charge are analyzed in terms of the input force. Moving to the new system may pave the way towards the fully integrated SoC for the e-skin development.