The present invention relates to a method for the control or the response time of a sensor (1) for chemical substances, said sensor (1) being comprised of a first (2) and a second (3) pins, at least a layer of active material deposited between said first (2) and said second (3) pins, said active material varying its own impedance following the contact with said chemical substances and as a function of their concentration, and a further control pin (4); said method being characterized in that it provides at least a phase of detection of said chemical substances corresponding to an absorption of said chemical substances by said material, and at least a phase of recovery of said sensor, corresponding to a desorption of said chemical substances by said material; and in that during said phases of detection and recovery a signal is applied to said control pin (4), suited to solicit the absorption or desorption of said material varying the duration of the respective phases of detection and recovery.
Reale, A., DI CARLO, A., D'Amico, A., DI NATALE, C., Lucci, M., Paolesse, R., et al. (2004). Metodo per il controllo della risposta temporale di un sensore per sostanze chimiche.
Metodo per il controllo della risposta temporale di un sensore per sostanze chimiche
REALE, ANDREA;DI CARLO, ALDO;D'AMICO, ARNALDO;DI NATALE, CORRADO;LUCCI, MASSIMILIANO;PAOLESSE, ROBERTO;TERRANOVA PERSICHELLI, MARIA LETIZIA
2004-12-30
Abstract
The present invention relates to a method for the control or the response time of a sensor (1) for chemical substances, said sensor (1) being comprised of a first (2) and a second (3) pins, at least a layer of active material deposited between said first (2) and said second (3) pins, said active material varying its own impedance following the contact with said chemical substances and as a function of their concentration, and a further control pin (4); said method being characterized in that it provides at least a phase of detection of said chemical substances corresponding to an absorption of said chemical substances by said material, and at least a phase of recovery of said sensor, corresponding to a desorption of said chemical substances by said material; and in that during said phases of detection and recovery a signal is applied to said control pin (4), suited to solicit the absorption or desorption of said material varying the duration of the respective phases of detection and recovery.File | Dimensione | Formato | |
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PCT25800_UniTorVergata_SensoreGas_Figure.pdf
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