The rapid deployment of the Internet of Things (IoT) is much dependent on the capacity
of the IoT node to be able to self-adapt to the target application. With the increase of
sensor networks and diversity of sensors available and with the increasing integration of
multiple sensors in a sensor node, it is necessary to develop systems capable of handling
all of these sensors with high level of flexibility. These may have different characteristics
that provide quite distinct interface requirements, thus giving rise to the need for systems
with re-configurable properties. With the implementation of sensor networks in places
where energy supply is limited or non-existent, and in situations where technician intervention
is expensive, there is a need to exchange conventional energy sources by methods
of storage and harvesting of the energy present in the environment, where the sensor
node is used (autonomous and renewable energy sources). This thesis will focus on the
study and implementation of a family of re-configurable and multi-sensor IoT nodes with
special emphasis on the energy storage and power management. It will also focus on the
develop of a CAD tool in order to help in the design of CMOS circuits, for the purpose of
integrating all the strategies here presented
