Excavator pressure sensor is the most widely used sensor, it is a general term for detecting gas, liquid, solid and other substances between the inductive force energy, also includes
Manometers that measure air pressure above and vacuum gauges that measure air pressure below. There are many kinds of force sensor, the traditional measurement method is to apply the deformation and displacement of elastic elements to express the maintenance of electric injection engine, but its volume is large, clumsy, and the output is non-linear. With the growth of microelectronics skills, the application of semiconductor materials piezoresistive effect and superior elasticity, the development of semiconductor force sensors, important silicon piezoresistive and capacitive two, they have small size, light weight, high sensitivity advantages, is widely used in semiconductor force sensors. When a semiconductor is stressed upward on a crystal, its resistivity will change. The relationship between the conductor resistivity change and stress is called the semiconductor piezoresistive effect, and the mechanical quantity sensor made of this effect is called the piezoresistive force sensor, which has two types, one is the sensor made of the semiconductor strain gauge pasted on the elastic element, which is called the pasted piezoresistive sensor. The other is the diffusion resistance made of integrated circuit technology on the substrate of semiconductor material, so that the strain gauge and the silicon substrate form the same whole sensor, called the diffusion piezoresistive sensor. It has the characteristics of high sensitivity, high precision, small size, light weight, high working frequency, simple structure, reliable work and long life.