Wireless ultra-low power smart data aquisition system for pressure sensing in medical application

The development of a wireless sensor microsystems containing all the components of data acquisition system, such as sensors, signal-conditioning circuits, analog-digital converter, embedded microcontroller (MCU), and RF communication modules has become now the focus of attention in many biomedical applications. This paper discusses innovation circuits and system techniques for building advanced smart medical devices (SMD). Low power consumption and high reliability are among the main criteria that must be given priority when designing such wirelessly powered Microsystems. Different capacitive readout circuits used for pressure sensing will be described. An example for a low power wireless system developed for multi-sensors monitoring will be presented.