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Analysis of the Principle of Pressure Sensors

Release time:

2023-06-06 08:54

In the human social environment, pressure is everywhere, so pressure sensors naturally become the most commonly used sensors in industrial practice. It is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, power, ships, machine tools, pipelines and many other industries.
A pressure sensor is a sensor that converts pressure into an electrical signal output. What is the concept of a pressure sensor when describing it.
Usually, a pressure sensor consists of two parts, namely a sensitive element and a conversion element. Among them, sensitive components refer to a part of the sensor that can directly sense or respond to the tested component; The conversion component refers to a part of a sensor that converts the measured strain experienced or responded to by a sensitive component into an electrical signal suitable for transmission or measurement.
Due to the typically weak output signal of the sensor, it is necessary to modulate and amplify it. With the development of integrated technology, people have also installed these circuits and power circuits inside sensors. In this way, the sensor can output usable signals that are easy to process and transmit. Although existing technology is relatively backward, the so-called sensor refers to the sensitive components mentioned above, while the transmitter is the conversion component mentioned above.
Pressure sensors usually refer to sensitive components that convert changing pressure signals into corresponding changing resistance or capacitance signals, such as piezoresistive components, pressure capacitive components, etc. A pressure transmitter usually refers to a complete set of circuit units used to measure the pressure composed of pressure sensitive components and regulating circuits. It can usually directly output standard voltage signals or current signals linearly related to the pressure of instruments, PLCs, and acquisition cards, and the equipment can directly collect them.