Charge-transfer-based Signal Interface for Resistive Sensors
نویسندگان
چکیده
Charge transfer has been demonstrated to be a cost-effective method to measure capacitive sensors with low-end microcontrollers. Here we apply charge transfer to measure the output of voltage dividers that include a highvalue resistive sensor hence extending the advantages of this method to a large group of sensors. By using two-point calibration, the maximal deviation obtained, referred to the Full Scale Span (FSS), is ±4 % for sensors between 100 kΩ and 1 MΩ, and ±5 % for sensors between 1 MΩ and 10 MΩ.
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