transducer (English name: transducer/sensor) is a detection device that can feel the information being measured, and can transform the felt information into an electrical signal or other required form of information output according to a certain law to meet the requirements of information transmission, processing, storage, display, recording and control. It is the primary link to realize automatic detection and automatic control.
sensor
The progress of information processing technology and the rapid development of microprocessor and computer technology require corresponding progress in the development of sensors. Microprocessors are now widely used in measurement and control systems. With the enhancement of the capability of these systems, as the front-end unit of the information acquisition system, the role of sensors is becoming more and more important. Sensors have become a key component in automation systems and robotics, and as a structural component in the system, its importance is becoming more and more obvious.
In the broadest sense, a sensor is a device that converts a physical or chemical quantity into an electrical signal that can be easily used. According to the International Electrotechnical Committee (IEC), "A sensor is a pre-component in a measurement system that converts input variables into signals that can be measured." "A sensor is a sensitive element that includes a carrier and a circuit connection," while "a sensor system is a combination of sensors that have some kind of information processing (analog or digital) capability." The sensor is an integral part of the sensor system, which is the first gateway through which the measured signal is input.
