The signal conditioning equipment is required to perform line processes such as amplification, attenuation, integration differentiation, addition or subtraction They are also require non-linear processes such as modulation, demodulation, s filtering, clipping and clamping, squaring and linearising or multiplication by another function. These functions require selection of components and faithful reproduction of the final c for the presentation stage.
The signal conditioning of a data acquisition equipment is in many cases an excitation and amplification system for p transducer or an amplification system for active transducer. In both cases, the transducer’s output is brought to the required level it useful for conversion, processing, indicating and recording.
|Block diagram of a signal conditioning system|
The transducer is connected to one arm of the bridge and the signal is transferred to an instrumentation amplifier after calibration. Instrumentation amplifier is followed by a filter, which is used to eliminate noise from the signal.