Sensitive element refers to the part of the sensor that can directly feel or respond to the measured object; The conversion element refers to the part of the sensor that can convert the measured feeling or response of the sensitive element into an electrical signal suitable for transmission or measurement; The signal conditioning conversion circuit consists of three parts: the above-mentioned electric signal is connected to the conversion circuit and can be converted into electric quantity output.
A sensor is a device that can detect and respond to changes in the external environment. They can sense various parameters, such as temperature, pressure, humidity, light and sound, and convert them into readable and analyzable signals. The existence of sensors is very important for the application of modern science and technology. They are widely used in various fields, such as medical diagnosis, environmental monitoring, automated production, transportation and so on.
The main components of the sensor
Sensitive element: The sensitive element is the most critical part of the sensor, which directly senses the measured object and produces corresponding response. Such as thermistor in temperature sensor, strain gauge in pressure sensor, photosensitive resistor in photoelectric sensor, etc.
Conversion element: The function of conversion element is to convert the output of sensitive element into electricity for subsequent processing and transmission. This process usually involves physical or chemical changes. For example, a thermocouple measures temperature by converting it into a potential difference, while an optical fiber sensor converts an optical signal into an electrical signal by interference or scattering of light.
Signal conditioning and conversion circuit: The signal conditioning and conversion circuit amplifies, filters and linearizes the electrical signal output by the conversion element for more accurate analysis and measurement. This process may involve technologies such as analog-to-digital conversion (A/D conversion) and digital signal processing (DSP).