Sensor TechnologyA sensor is a device，which responds to an input quantity by gener-ating a functionally related output usually in the form of an electrical oroptical signal.Sensors and sensor systems perform a diversity of sensing functi-ons allowing the acquisition, capture, communication, processing, anddistribution of information about the states of physical systems. Thismay be chemical composition, texture and morphology, large-scale str- ucture, position, and so on. Few product
