| 摘要 |
PURPOSE: A pressure sensor for a commercial vehicle is provided to improve safety and reliability of a brake system by measuring deformation rate generated when applying pressure on a diaphragm using a strain gage and converting the deformation rate into a pressure value. CONSTITUTION: A pressure sensor for a commercial vehicle comprises a case, a diaphragm, and a strain gage. A pressure input part is formed on the upper end of the case. The diaphragm is installed inside the case and the deformation of the diaphragm is generated by applying the pressure delivered through a pressure input part(15) on the diaphragm. The strain gage adheres to the lower side of the diaphragm and senses the deformation rate through resistance change and converts the deformation rate into the pressure value.
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