2026-04-05T10:40:57Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/868322025-07-17T07:35:27Zcom_2072_1033col_2072_452950

urn:hdl:2117/86832 Charge-transfer-based signal interface for differential capacitive sensors Gaitán Pitre, Jorge Eliécer Pallàs-Areny, Ramon Àrees temàtiques de la UPC::Enginyeria electrònica Detectors Differential capacitive sensor charge transfer sensor-to-microcontroller interface direct sensor interface Detectors We propose a circuit to directly connect a differential capacitive sensor to a microcontroller unit (MCU), which is based on the charge-transfer method and does not need any calibration component. The performance has been tested by emulating the differential capacitive sensor with discrete components. The major uncertainty sources are residual stray capacitances. The maximal deviation obtained, referred to the Full Scale Span (FSS), is ±4 % for sensors with nominal capacitance C0 = 100 pF, and ±0,6 % for sensors with C0 = 1 nF. Postprint (published version) 2015 Conference lecture http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access