RT Journal Article
T1 A simple interface circuit for digital readout of lossy capacitive sensors
A1 Hidalgo-López, José Antonio
K1 Circuitos electrónicos
K1 Circuitos de interfaces
K1 Detectores de proximidad
AB Direct Interface Circuits (DICs) allow straightforward digital reading from a range of sensors. Their architecture consists of a few passive components that help a digital processor (DP) perform a series of charge and discharge processes that provide time measurements to determine the sensor's resistive, capacitive, or inductive magnitudes. This article presents a new DIC that only requires two resistors for the digital readout of a group of sensors with a wide range of applications, namely lossy capacitive sensors. The DP does not need any analog element in its architecture, and the arithmetic operations involved are simple additions and multiplications. Apart from its simplicity, the new circuit brings significant improvements compared to other DICs proposed in the literature for the same type of sensors. Thus, the systematic errors in the capacitance estimates are only 0.30% for a wider range (100 pF − 95.92 nF), and the measurement time is 34% shorter.
PB Elsevier
YR 2023
FD 2023-11
LK https://hdl.handle.net/10630/27498
UL https://hdl.handle.net/10630/27498
LA eng
NO Hidalgo-López, J. A. (2023). A simple interface circuit for digital readout of lossy capacitive sensors. Measurement, 221, 113512.
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026