I am trying to design and simulate a capacitive accelerometer.
The idea is to model the sensor as a capacitance bridge to which an AC signal is inserted. Each arm of the bridge acts as a voltage divider proportional to the acceleration (as capacitance). Then the signals are rectified and summed up to result in a signal proportional to the input. My question is both specific and general. I have no idea how to choose values for the resistors, capacitors and the source of this circuit. And in general what is the design process (choosing values) when designing a read-out circuit of any type of sensor?