The sensor (English name: transducer/sensor) is a detecting device that can sense the measured information and can transform the detected information into an electrical signal or other required form of information output according to a certain rule to satisfy Requirements for the transmission, processing, storage, display, recording and control of information. It is the first step in achieving automatic detection and automatic control.
The national standard GB7665-87 defines the sensor as: "A device or device that can sense a specified measured piece and convert it into a usable signal according to a certain law (the mathematical function rule), usually composed of a sensitive element and a conversion element."
"Sensor" is defined in the new Wei-style dictionary as:
"Power is received from one system, and power is usually sent to the device in the second system in another form."
According to this definition, the role of the sensor is to convert one energy into another, so many scholars also use the "Transducer" to refer to the "sensor."
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