Piezoelectric resonance sensor array
Velimira Dimitrova Todorova, Dimo Kolev · 2005
With the piezoelectric resonance sensors, high sensibility can be achieved in the tactile information systems, because the working frequency of the piezomaterial has a great dependence on the applied mechanical stress. Discrete piezoelectric resonance sensors have been used for a long time, but they are unable to satisfy the requirements of modern tactile sensing information systems. At the moment, there is an interest in developing piezoelectric array sensors, which have greater sensibility and more functional abilities than the discrete sensor. The operating principle and construction of this array sensor affords an opportunity of obtaining the exact location of applied mechanical stress - a tactile image can be obtained. The purpose of this paper is to study the possibilities for the design of the piezoelectric resonance array sensor system. The results from these investigations allow us to build such a resonance tactile array as a micro system, which will enable increase in the spatial resolution and the radical decrease of the sensor dimensions.