The pressure sensor of the two methods to achieve impact

Pressure sensors used in many bad environment , some of the bad environment may be more severe , such as pressure Map Sensor need to measure the impact pressure , the measured impact pressure generally requires relatively high pressure sensor performance , we usually have the following two methods to measure the impact type pressure .1, changing the pressure transmitter chip , not an ordinary ceramic cores or diffused silicon core , but with strain gages , strain gauges is a strain on the DUT will be converted into an electrical signal changes in the sensitivity of the device . It is a piezoresistive strain Engine Temp Sensor of the main components .Resistance strain gauge is the most widely used metal resistance strain gauges and semiconductor strain gauges two kinds . Metal resistance strain gauges have filamentous strain gauge and the metal foil strain gages two kinds . The strain gauge is usually via a special adhesive binder tight mechanical strain is generated on the substrate , the force occurs when the substrate stress , the resistance strain gauge is generated with deformation, the resistance strain gauge is changed , so that the the voltage across the resistor changes .The strain gauge force generated when the change in resistance is usually small , it typically are composed of strain gage bridge , and through subsequent instrumentation amplifier is amplified , and then transmitted to the processing circuit . Strain gauge pressure Crankshaft Position Sensor is generally shock and impact resistance is better, but this sensor accuracy with their manufacturers .2 , with ordinary ceramic pressure sensor or pressure sensor to measure diffusion silicon , but not be measured directly , but with the addition of a buffer tube , which also can measure the impact pressure . This method is economical , easy to install , so the application is very extensive.Regardless of the method is to measure the impact pressure sensor core body protection is not strong pressure washed out . Which method based on the specific use now have a bad environment and customer choice .