what is da difference between sensors and transducers?

Answer 1

In the general case, a sensor is the complete assembly required to detect and communicate a particular event, while a transducer is the element within that assembly which accomplishes only the detection of the event. At the risk of getting too abstract, a transducer converts an input to an output that can be exploited to accomplish the sensing mission.

For example, a pressure sensor may use a diaphragm and/or strain gage to "detect" pressure differential across the diaphragm, but he complete sensor will additionally consist of a display element and the electronics required to energize and condition the output of the detecting transducer, as well as the elements required to house and drive the display feature.

A compass is a simple sensor of magnetic north, wherein the magnetic element in the compass is the transducer or "north detector" and the needle, housing and compass face comprise the remainder of the "north sensor".

In special cases, a sensor and a transducer can be the same. For example, a bi-metallic spring element can both detect temperature change, and may well be the entire sensor if a pointer is attached to the bi-metalic spring.

Are you sensing the difference now?....:-)

Answer 2

Sensors are a type of transducer. The broad definition of a transducer is a device which converts one form of signal to another. For example, an LED is a transducer which converts electrical energy to light, or an antenna converts EM wave energy to electrical signal. There are many examples.

Sensors are transducers which typically present more information for measurement, for example. A common example is a temperature sensor. Another would be pressure or flow sensors. Other examples would include speedometers, tachometers, altimeters, etc.

Answer 3

The difference between sensors and transducers is :
Sensors are devices which mainly sence any thing and give out put in any desired form; where as transducers are devices that transform one form of energy in to another form.
For example;-
An TV antenna is a transducer where electromegnetic energy is transformed and reproduced in to electrical energy.
A thermal sensor ia a device which senses heat energy and a photo sensor is device which senses light.

Answer 4

Sensor and transducer can be used interchangeably