Introduction to the principles and applications of pressure sensors

Infineon / Mitsubishi / Fuji / Semikron / Eupec / IXYS

Introduction to the principles and applications of pressure sensors

Posted Date: 2024-01-16

A pressure sensor is a device that senses external pressure and converts it into an electrical signal. Its working principle is to use the effect of pressure to change the resistance, capacitance or inductance inside the sensor, thereby generating a corresponding electrical signal.

Pressure sensors are widely used in industrial automation control, automotive electronic systems, medical equipment, aerospace and other fields.

capacitive pressure sensor symbol

There are many working principles of pressure sensors, including resistive, capacitive, inductive and piezoelectric. Among them, the resistive pressure sensor is the most common one, which reflects the pressure by measuring changes in resistance value. Capacitive pressure sensors use changes in capacitance to sense pressure, while inductive pressure sensors measure pressure by sensing changes in inductance.

In the industrial field, pressure sensors are widely used in measurement and control systems. It can be used to monitor the pressure of liquids and gases and convert it into electrical signal output to monitor and control the production process. In automotive electronic systems, pressure sensors can be used to monitor parameters such as engine oil pressure and braking system pressure to ensure the safety and stability of the car. In medical equipment, pressure sensors can be used to monitor patients' breathing, blood pressure and other vital signs to help doctors diagnose and treat them.

In the aerospace field, pressure sensors play a vital role. It can be used in the air pressure control system of aircraft, the attitude control system of missiles, etc. to ensure the safety and stability of the aircraft. In addition, pressure sensors can also be used in geological exploration, environmental monitoring, meteorological prediction and other fields, providing important technical support for human production and life.

In short, the pressure sensor is an indispensable sensor device in modern industry and technology. It has a wide range of applications and is of great significance to improving production efficiency and ensuring safety and stability. With the continuous development of science and technology, the performance and application fields of pressure sensors will be further expanded and improved.

Review Editor: Liu Qing

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