Dispersion Capacitive de l’Interface H2SO4/Pt = Capacitive Dispersion of Pt/H2SO4 Interface

Capacitive Sensor Circuit Interface

Capacitive sensing is becoming a popular technology to replace optical detection methods and The FDC1004's basic operation of capacitive sensing implements a switched capacitor circuit to transfer interface.ti.com. Find design resources for Capacitive Sensing. I2C Interface (8) using the AT42QT1060-MMU ('QT1060') 6 Channel QTouchTM Integrated Circuit (IC). Silicon Labs' 8and 32-bit capacitive t...

An accurate interface for capacitive sensors

A new smart interface based on a first-order chargebalanced SC-oscillator is presented for capacitive sensors, which are shunted by a parasitic conductance. In the novel interface, the effect of shunting conductance is reduced by using the charge/discharge method. The effect of the stray capacitances is eliminated by using the two-port measurement. Moreover, all multiplicative and additive erro...

High-resolution continuous-time interface for micromachined capacitive accelerometer

A Capacitive Sensor Interface Circuit Based on Phase Differential Method

A new interface circuit for capacitive sensor is presented. This paper presents the design and simulation of soil moisture capacitive sensor interface circuit based on phase differential technique. The circuit has been designed and fabricated using MIMOS’ 0.35μm CMOS technology. Simulation and test results show linear characteristic from 36 – 52 degree phase difference, representing 0 – 100% in...

Charge-transfer-based Signal Interface for Differential Capacitive Sensors

 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 obtaine...