And people's own sense organs, alone in the study of natural phenomena and laws as well as the production activities and their functions are not enough. In order to adapt to this situation, it needs to sensor. Most used in automobile industry, electron, according to the factory on some machinery.

Actually sensor is a kind of testing device, can feel the measured information, and will feel information, according to certain rules transform into electrical signal or other required information in the form of output, in order to meet the information transmission, processing, storage, display, record and control requirements. Sensor has already penetrated into such as industrial production, the development, Marine exploration, environmental protection, resource investigation, medical diagnosis, biological engineering, and even the protection of cultural relics and extremely extensive areas. It is no exaggeration to say, from the vast space, to the mighty ocean, and all kinds of complicated engineering system, nearly every modern project, is inseparable from the various sensors. Common sensor application field and principle of work is as follows. 1, sensors, classified according to its USES: pressure sensitive and force sensor

Position sensor

Liquid level sensor

Energy consumption of the sensor

Speed sensor

Acceleration sensor

Radiation sensor

Thermal sensors

24 GHZ radar sensor

2, sensors, according to the principle of classification: vibration sensor

Wet sensor

Magnetic sensor

Gas sensor

Vacuum sensor

Biosensor, etc.

3, sensors, according to the output signal to a standard classification: analog sensor - will be measured the electrical signal into analog signals.

Digital sensors - will be measured the electrical signal into digital output signal (including direct and indirect conversion).

Full digital sensors - will be measured signal into frequency signal or short periodic signal output (including direct or indirect conversion).

Switch sensors - when a measured signal reaches a certain threshold, the sensor output accordingly a set of low level or high level signal.

The above content is the understanding of the sensor, a good learning together, learning is endless, they must have a studious aspirant heart, use knowledge to enrich their lives, have good knowledge and you should be a good sharing!