Title :
Coin recognition using an inductive proximity sensor microsystem
Author :
Passeraub, A. ; Besse, P.-A. ; de Raad, C. ; Dezuari, O. ; Quinet, F. ; Popovic, R.S.
Author_Institution :
Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
We have realized metallic profile imagery of coins using a miniaturized inductive proximity sensor. The sensor is a microsystem composed of a 1 mm diameter coil and a new ASIC interface based on the principle of a differential relaxation oscillator. This imagery is appropriate for coin pattern recognition. We successfully acquired well recognizable images of various coins with similar and different geometrical, electrical and magnetic properties
Keywords :
coils; electric impedance measurement; electric sensing devices; image recognition; microsensors; 1 mm; ASIC interface; coil; coin pattern recognition; differential relaxation oscillator; double alloy coins; ferromagnetic coins; metallic profile imagery; miniaturized inductive proximity sensor; Application specific integrated circuits; Coils; Image recognition; Image sensors; Magnetic sensors; Mechanical sensors; Oscillators; Pattern recognition; Robustness; Variable structure systems;
Conference_Titel :
Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-3829-4
DOI :
10.1109/SENSOR.1997.613666
