A simple interface circuit to measure very small capacitance changes in capacitive sensors

IEEE Transactions on Instrumentation and Measurement

Volumn 50, Issue 6, 2001, Pages 1583-1586

  Preethichandra, D M G ^a,b   Shida, Katsunori ^a,b  

^a IEEE   (Japan)

^b SAGA UNIVERSITY   (Japan)

Author keywords

Capacitive sensor; Double differential operating principle; High resolution; Interface circuit; Parallel stray capacitance; Percentage change

Indexed keywords

ANALOG TO DIGITAL CONVERTER; CAPACITIVE SENSORS; DOUBLE DIFFERENTIAL OPERATING PRINCIPLE; INTERFACE CIRCUIT; PARALLEL STRAY CAPACITANCE; PERCENTAGE CHANGE;

ANALOG TO DIGITAL CONVERSION; CAPACITORS; DIFFERENTIATING CIRCUITS; ELECTRIC CONVERTERS; ELECTRIC MEASURING BRIDGES; LINEAR NETWORK SYNTHESIS; SCHEMATIC DIAGRAMS; SENSORS;

CAPACITANCE MEASUREMENT;

EID: 0035720935     PISSN: 00189456     EISSN: None     Source Type: Journal    
DOI: 10.1109/19.982949     Document Type: Article

References (10)

1. An integrated capacitive position sensor
2. A capacitive 4-turn angular-position sensor
3. A robust angular speed sensor
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6. A planar capacitive precision gauge for liquid-level and leakage detection
7. An interface circuit for high accuracy signal processing of differential-capacitance transducers
8. A novel low-cost capacitive-sensor interface
9. Liquid condition monitoring through a multi-functional sensing approach