Information technology three pillars of the seven sensors common solution

Introduction Physical sensors are sensors that detect physical quantities. It is the use of certain physical effects, the measured physical volume into a form of energy to facilitate the processing of the signal device. The output signal and the input signal have a definite relationship.

China's national standard (GB7665-2005) of the sensor is defined as: "can feel the measured and in accordance with certain laws converted to the available output signal of the device or device." Sensor as an important means of information acquisition, and communications technology and computer technology together constitute the three pillars of information technology.

Here are the following for everyone to introduce the following seven sensors.

Sensor 1: Physical sensor

One of the three pillars of information technology Common sensor solution

Physical sensor

Physical sensors are sensors that detect physical quantities. It is the use of certain physical effects, the measured physical volume into a form of energy to facilitate the processing of the signal device. The output signal and the input signal have a definite relationship.

Photoelectric sensors, piezoelectric sensors, piezoresistive sensors, electromagnetic sensors, thermoelectric sensors, optical fiber sensors.

Classified according to their purpose

Pressure sensitive sensor, position sensor, level sensor, energy sensor, speed sensor acceleration sensor, radiation detector, thermal sensor, 24GHz radar sensor.

According to its principle classification

Vibration sensor, humidity sensor, magnetic sensor, gas sensor, vacuum sensor, biosensor and so on.

According to its output signal classification

Analog Sensor - Converts the measured non-electrical quantities into an analog electrical signal.

Digital Sensor - Converts measured non-electrical quantities into digital output signals (including direct and indirect conversions).

Switch Sensor - When a measured signal reaches a certain threshold, the sensor outputs a set low or high signal accordingly.

According to their material classification

Under the influence of external factors, all materials will make corresponding and characteristic reactions. Among them, those materials that are the most sensitive to the outside world, that is, those materials with functional characteristics, are used to make the sensor's sensitive components. From the point of view of the applied materials, the sensors can be divided into the following categories:

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