These days, the piezoresistive pressure sensors are widely used because of their strength and resistance properties. These types of pressure sensors are manufactured with semiconductor technology, which helps them to operate on the resistive principle. One can experience that the piezoresistive pressure sensors have enabled automatic, precise and low-cost electric compensation of the standard error parameters, as its semiconductor components use the new signal processing techniques.
About Piezoresistive Sensors:
In the piezoresistive sensors, we can see the pressure changes the resistance by mechanically deforming the sensor and enables the resistors in a bridge circuit. These types of pressure sensors are manufactured with semiconductor technology that normally operates on the resistive principle. This type of resistance change caused in a monocrystalline semiconductor is known as a piezoelectric effect that is believed to be substantially higher than that in the standard strain gauges.
The specific advantages of using the piezoresistive sensors are high sensitivity, good linearity (at a constant temperature) and the ability to track the pressure changes (without any kind of signal hysteresis). It is believed that to know the optimal application of these types of pressure sensors, as a user, you need to understand their structure, manufacturing details and properties. Manufactured with monocrystalline silicon (in a water format) the piezoresistive sensor provides very high mechanical strength and elastic behavior (up to the point of mechanical breakdown). This helps the pressure sensors to exhibit an only minor response to hysteresis and mechanical aging.
Manufactured with MEMS technology, the piezoresistive sensors are used for various applications like the automotive industry, biomedical applications, and household appliances. A diaphragm formed on a silicon substrate in a piezoresistive sensor is believed to be, the sensing material that blends with applied pressure and causes a deformation (occurs in the crystal lattice of the diaphragm). This type of deformation leads to a change in the band structure of the piezoresistive sensors to change the resistivity of the material (which normally increases or decreases as per the orientation of the resistors). One should know that piezoresistive sensors are usable only after undergoing corrections that have been made to offset and for other certain effects, which are induced by their sensitivity to temperature variations and the manufacturing process.
Some Specific Application Areas:
1.Advanced Household Appliances: In our daily life, we use many household appliances in which the piezoresistive sensors are sued, such as dishwashers, vacuum cleaners, and washing machines. This helps in making things easy for us and ensures the appliances deliver a top quality service.
2.Automotive Industry or Applications: One can find the use of piezoresistive sensors in automotive industrial applications like air pressure selection, checking the gas level and oil level.
3.Biomedical Application: Most often one can find the use of piezoresistive sensors in the blood pressure measurement equipment.
Advantages of Using Piezoresistive Pressure Sensors:
1. The first advantage of using piezoresistive sensor- these are a low-cost yet effective sensor that offers fabrication opportunity.
2.Has a mature processing technology that helps in suitably adjusting different pressure levels (achieved according to the application).
It is important to get well-designed and durable piezoresistive pressure sensors for your specific application or industry to enjoy the best results by relying on a reliable manufacturer. No doubt, a competent pressure sensor manufacturer or supplier will provide you the best quality piezoresistive sensor devices at an affordable price.