1. Traditional piezoresistive principle.
The piezoresistive principle is to measure the change in pressure by using the change in the resistance value of the strain gauge. When pressure is applied to the strain gauge, the strain gauge deforms, causing its resistance value to change. By measuring the change in the resistance value, the amount of pressure acting on the strain gauge can be calculated. Pressure sensors on the conventional piezoresistive principle typically consist of an elastic sensing element and a strain gauge. When pressure is applied to an elastic sensitive element, the strain gauge deforms accordingly, changing its resistance value.
2. Characteristics of pressure sensors based on the traditional piezoresistive principle.
1.High accuracy: Since the resistance value of the strain gauge changes very slightly, the change in pressure can be accurately measured.
2.Good stability: The pressure sensor with the traditional piezoresistive principle has good stability and will not have a large error after long-term use.
3.Wide range of application: due to its simple structure, small size, light weight and other characteristics, it is suitable for a variety of different application scenarios.
4.High reliability: Since the core components are solid-state electronics, they have higher reliability compared to traditional mechanical sensors.
3. The application of pressure sensors based on the principle of traditional piezoresistivity.
1.Industrial control: In the field of industrial control, pressure sensors based on the traditional piezoresistive principle are widely used in gas cylinder pressure monitoring, pipeline pressure monitoring and other occasions. By monitoring pressure changes in real time, safety and stability in the production process can be guaranteed.
2.Medical devices: In the medical field, pressure sensors based on the traditional piezoresistive principle are used to monitor physiological parameters such as blood pressure and respiratory pressure. For example, this type of pressure sensor is commonly used in medical blood pressure monitors to accurately measure blood pressure.
3.Environmental monitoring: In the field of environmental monitoring, pressure sensors based on the traditional piezoresistive principle can be used to measure parameters such as atmospheric pressure, weather station pressure, etc. By monitoring environmental stress, it is possible to better understand how the weather is changing.
4.Aerospace: In the aerospace field, pressure sensors based on the traditional piezoresistive principle have the characteristics of high precision and high stability, and can be used in pressure monitoring systems of aircraft such as aircraft and rockets. This helps to ensure the safe performance and operational stability of the aircraft.
5.In ***, pressure sensors based on the traditional piezoresistive principle are widely used in monitoring systems such as engine oil pressure and gas cylinder pressure. By monitoring these parameters, it is possible to ensure the safety of the operation of the car and extend its service life.
IV. Conclusions. As a common pressure measuring device, the pressure sensor with traditional piezoresistive principle has the advantages of high accuracy, good stability, wide application range and high reliability. It has been widely used in industrial control, medical equipment, environmental monitoring, aerospace, ** and other fields. With the continuous development of science and technology, new types of pressure sensors are emerging, but the traditional piezoresistive principle of pressure sensors still occupies a certain market position due to their stability and reliability. In the future, with the continuous progress of material science and manufacturing process, it is believed that pressure sensors based on the traditional piezoresistive principle will make greater breakthroughs and innovations in technology and application.