What is the Basic Principle of Sensors?
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The basic principle of sensors is: through sensitive elements and conversion elements, specific measured signals are converted into a certain type of usable signal according to a certain law and then outputted, to meet the requirements of information transmission, processing, recording, display, and control. Sensors can detect physical quantities such as force, temperature, light, sound, and chemical composition, and convert them into electrical quantities like voltage and current according to certain laws, or into the on/off state of a circuit. Sensors generally consist of sensitive elements and conversion elements, serving as the primary link in achieving automatic detection and automatic control. The function of a sensor is to convert non-electrical quantities into electrical quantities or the on/off state of a circuit, thereby facilitating convenient measurement, transmission, processing, and control.