What is a sensor?

Sensor is a kind of detection device that can sense the measured information, and can convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control.

The national standard GB7665-87 defines a sensor as "a device or equipment that can sense a specified measured object and convert it into a usable signal according to a certain law (the law of mathematical functions), usually consisting of a sensitive element and a conversion element".

Extended data:

The characteristics of sensors include miniaturization, digitalization, intelligence, multifunction, systematization and networking. It not only promotes the transformation and upgrading of traditional industries, but also may establish new industries, thus becoming a new economic growth point in 2 1 century. Miniaturization is based on MEMS technology, and has been successfully applied to silicon devices to make silicon pressure sensors.

Composition of sensor: The sensor is generally composed of four parts: sensitive element, conversion element, conversion circuit and auxiliary power supply.

References:

Baidu encyclopedia-sensor