The function of a basic resistive pressure sensor is to convert applied pressure into a corresponding electrical signal. These sensors are designed to measure pressure changes in a variety of applications and are commonly used in industrial, automotive, medical, and consumer electronics devices.
The basic structure of a resistive pressure sensor typically consists of a diaphragm or sensing element that deforms under the influence of applied pressure. The diaphragm is often made of a flexible material, such as silicon or metal, which bends or stretches when exposed to pressure.
The diaphragm is connected to a resistive element, such as a Wheatstone bridge or a piezoresistive material. As the diaphragm flexes, it causes a change in the resistance of the element. This change in resistance is directly proportional to the applied pressure, following a predefined relationship (calibration) specific to the sensor.
The output signal from the resistive pressure sensor can be measured and interpreted to determine the pressure level. It is usually an analog signal that may be converted into a digital value using an analog-to-digital converter (ADC) for further processing and display.
Overall, the basic resistive pressure sensor serves as a reliable and cost-effective means to measure pressure changes and is widely used in various industrial and consumer applications where precise pressure monitoring is required.