2026-05-30T19:36:55Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/263562026-02-03T11:30:00Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Hidalgo-López, José Antonio
author
Castellanos-Ramos, Julián
2023-04-21T11:43:13Z
2023-04-21T11:43:13Z
2023
José A. Hidalgo-López, Julián Castellanos-Ramos, Two proposals to simplify resistive sensor readout based on Resistance-to-Time-to-Digital conversion, Measurement, Volume 213, 2023, 112728, ISSN 0263-2241, https://doi.org/10.1016/j.measurement.2023.112728.
https://hdl.handle.net/10630/26356
https://doi.org/10.1016/j.measurement.2023.112728
Direct Interface Circuits (DICs) are simple circuits used in readouts for all types of sensors. For resistive sensors, all DICs perform a resistance-to-time-to-digital conversion using just the sensor, some calibration resistors, one or two capacitors, and a Digital Processor. These circuits require a variable number of charging and discharging cycles of a capacitor to estimate the sensor resistance, Rx, increasing both acquisition time and power consumption. This paper presents two resistive DICs capable of estimating Rx by means of a single charging-discharging process, simplifying the readout process. Furthermore, this is achieved without increasing hardware requirements. Only two time measurements are used to obtain Rx. Despite the simplicity of the new circuits, the experimental results show that relative errors of estimating Rx can be below 0.8 %, and this in a wide range of resistances of over 40 dB. Moreover, acquisition time and energy consumption can be reduced by up to 75 %.
eng
Atribución 4.0 Internacional
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Two proposals to simplify resistive sensor readout based on Resistance-to-Time-to-Digital conversion
journal article
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