A transducer that measure physical quantities and transmit the information as coded digital signals rather than as continuously wearing current or voltage is called digital transducer.
As sensors and actuators become more complex they provide support for various modes of operation and interfacing. Some application requires additional e fault tolerance and distributed computing. Search high level functionality can be achieved by adding an embedded microcontroller to the classical sensor/actuator which increases the ability to cope with the complexity at a fair price. Does integration of an analogue or digital sensor or actuator a processing unit and a communication become necessary.
Transducer are sensors and actuator in order that a computer system can interact with the physical environment. In 1982, KO and Fung introduce the term "intelligent transducer". An intelligent trans ducer for smart transducer is the integration of an analogue or digital sensor actuator element a processing unit and communication interface. In case of a sensor the smart transducer transform the raw sensor signal to a standardized digita representation of check and calibrate the signal and transmit this signal to its user via a standardized communication protocol. In case of any actuated the smart of ducer except standardized amounts and transforms this into control signals for the actuator. Interface is a referred to as water transducer for signal transducer.
