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A sensor is a device or device that senses a specific measurement quantity and converts it into a usable output signal according to certain rules. Sensors usually consist of sensing elements and conversion elements, including:
① Sensitive element refers to the part of the sensor that can directly sense (or respond) to the measured quantity.
② The conversion element refers to the part of the sensor that can convert the measurement quantity sensed (or responded) by the sensitive element into an electrical signal suitable for transmission or measurement.
③When the output is a specified standard signal, it is called a transmitter.
Sensors have been widely used in various fields, such as industrial production, medical equipment, environmental monitoring, etc. They can help us monitor and measure various physical quantities in real time, thereby helping us better understand and grasp the conditions of the objects being measured.
In sensors, sensitive components play a key role. They are responsible for directly sensing (or responding to) the measured quantity and converting it into an electrical signal. The types and structures of sensitive components vary depending on the measurement objects and measurement requirements.
The conversion element is another important component of the sensor. They are responsible for converting the measured quantities sensed (or responded) by sensitive components into usable electrical signals. Conversion components can use various technologies and principles, such as resistance, capacitance, inductance, piezoelectric effect, etc., to achieve signal conversion and amplification.
The output signal of the sensor can be in many forms, such as analog signals and digital signals. When the output is a specified standard signal, the sensor is also called a transmitter. Transmitters are often used to transmit measurement results to other devices or systems for further processing and analysis. They play a vital role in industrial automation and control processes.
Generally speaking, the sensitive elements and conversion elements in the sensor are key components to achieve the measurement function. The sensitive element is responsible for sensing (or responding) to the measured quantity, and the conversion element is responsible for converting the measured quantity into a usable signal. By rationally selecting and designing these components, we can obtain accurate and reliable measurement results to meet the needs in different fields. Whether it is industrial production, medical equipment or environmental monitoring, sensors play an irreplaceable role.
