Choosing component values for capacitive accelerometer readout-circuit

Question

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?

Answer 1

The design values will be determined by the physical parameters of whatever is making the sensor. Remember that two conductors with distance between them can make a capacitor. So whether this is happening in an integrated I see or you actually have two separate capacitors on an integrated circuit, the values of these can be calculated.

It looks like the last few capacitors and resistors form an RC circuit before a gain stage which gives you time constant for a filter. The first two capacitors need to have enough capacitance to pass AC to the sensor caps and the rest of the circuit