A sensor is a detection device that can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, and display , recording and control requirements.

This website has introduced many types of sensors. This article will explain which parts the sensor generally consists of and the functions of each part. Different types and models of sensors have different components due to the different physical quantities measured. The following are some Basic components common to sensors:

1. Sensing element

The sensing element is the core part of the sensor, and it is also the part that converts the measured physical quantity into an electrical signal. The sensing element generally chooses a component that can convert the measured physical quantity into an easy-to-measure electrical signal, and selects a component that is suitable for measuring the physical quantity. Sensitive components, such as piezoelectric effect, magnetoelectric effect, photoelectric effect, etc. Different types of sensors have very different sensing elements, such as temperature sensors, acceleration sensors, pressure sensors.

2. Conductive parts

The special guide part is a part that effectively conducts the measurement results of the measured physical quantity to the sensitive part of the sensing element. The conduction part is usually made of conductive materials, and the commonly used materials are metal, graphite, carbon, etc.

3. Amplifier

The signal output by the sensor cannot be directly accepted and utilized by people, so it is necessary to amplify or amplify the output signal of the sensor so that the signal output by the sensor can be effectively transmitted. The amplifier is generally composed of a microprocessor, an operational amplifier, and a positive feedback circuit. The amplifier increases the signal strength and improves the signal-to-noise ratio, providing conditions for the next signal processing.

4. Filter

The signal of the special sensor contains a large number of interference signals, which need to be filtered to remove noise. The flow wave device extracts the required signal from the messy interference signal through a specific algorithm, which improves the reliability of signal transmission and precision.
5. Power supply and interface circuit

The power supply and interface circuit of the sensor are mainly to provide the power required by the sensor and exchange information with other devices. The power supply can be DC power supply or battery, and the interface circuit generally includes various communication interfaces and data transmission interfaces. Analog or digital approach to data evangelization

6. Shell and connector

The shell and connector of the sensor play the role of protecting and connecting the components of the sensor, and also play a role similar to the casing or protective shell, which can avoid external physical and environmental disturbances to the sensor.

In short, the components of the sensor are complex and diverse, consisting of sensing elements, conductive components, amplifiers, filters, power supply and interface circuits, housings and connectors, etc., and are also affected by the measured physical quantities and sensor functions. Sensors have been widely used in industrial applications, vehicle control, environmental monitoring, medical care and other fields, providing an important support for the detection of physical quantities and the development of technology.

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