A sensor is a device, subsystem or module which detects changes or
events in its environment. It sends the information to electronic
devices such as a computer processor. All living organisms have
biological sensors that are sensitive to light, motion, magnetic fields,
temperature, humidity or pressure, or that can detect toxins,
pheromones, nutrients, or internal metabolic indicators. Sensor devices
can be designed to measure different physical parameters, such as
geophones, hydrophones and seismometers can measure sounds, while air
pollution sensors, actinometers and gas detectors can detect changes in
the environment. Sensor accuracy and precision, and sensor deviations
are essential attributes of sensors that determine their efficiency.
This book elucidates new techniques and applications of sensors in a
multidisciplinary manner. It includes some of the vital pieces of work
being conducted across the world, on sensor devices, circuits and
systems. This book aims to equip students and experts with the advanced
topics and upcoming concepts of this technology.