RT Journal Article
T1 Reducing measurement time in direct interface circuits for resistive sensor readout
A1 Hidalgo-López, José Antonio
A1 Sánchez-Durán, José Antonio
A1 Oballe-Peinado, Óscar
K1 Detectores
AB Direct Interface Circuits (DICs) carry out resistive sensor readings using a resistance-to-time-to-digital conversion without the need for analog-to-digital converters. The main advantage of this approach is the simplicity involved in designing a DIC, which only requires some additional resistors and a capacitor in order to perform the conversion. The main drawback is the time needed for this conversion, which is given by the sum of up to three capacitor charge times and their associated discharge times. This article presents a modification of the most widely used estimation method in a resistive DIC, which is known as the Two-Point Calibration Method (TPCM), in which a single additional programmable digital device pin in the DIC and one extra measurement in each discharge cycle, made without slowing down the cycle, allow charge times to be reduced more than 20-fold to values around 2 µs. The new method designed to achieve this reduction only penalizes relative errors with a small increase of between 0.2% and 0.3% for most values in the tested resistance range.
PB MDPI
YR 2020
FD 2020-05-02
LK https://hdl.handle.net/10630/36132
UL https://hdl.handle.net/10630/36132
LA eng
NO Hidalgo-López, J. A., Sánchez-Durán, J. A., & Oballe-Peinado, Ó. (2020). Reducing Measurement Time in Direct Interface Circuits for Resistive Sensor Readout. Sensors, 20(9), 2596. https://doi.org/10.3390/s20092596
NO This work was funded by the Spanish Government and by the European ERDF program funds under contract TEC2015-67642-R and by the Universidad de Málaga under program “Plan Propio 2020”.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026