Descripción
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This article upgrades the RC linear model presented for piezoresistive force sensors. Amplitude nonlinearity is found in sensor conductance, and a characteristic equation is formulated for modeling its response under DC-driving voltages below 1 V. The feasibility of such equation is tested on four FlexiForce model A201-100 piezoresistive sensors by varying the sourcing voltage and the applied forces. Since the characteristic equation proves to be valid, a method is presented for obtaining a specific sensitivity in sensor response by calculating the appropriate sourcing voltage and feedback resistor in the driving circuit; this provides plug-and-play capabilities to the device and reduces the start-up time of new applications where piezoresistive devices are to be used. Finally, a method for bypassing the amplitude nonlinearity is presented with the aim of reading sensor capacitance. | |
Internacional
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No |
JCR del ISI
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No |
Título de la revista
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Sensors |
ISSN
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14248220 |
Factor de impacto JCR
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Información de impacto
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Volumen
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11 |
DOI
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10.3390/s110908836 |
Número de revista
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9 |
Desde la página
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8836 |
Hasta la página
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8854 |
Mes
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SIN MES |
Ranking
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