What does 'pass' mean in a car?
1 Answers
pass means the passenger seat belt is not fastened, and the passenger seat has a gravity sensor. This is used to determine if there is someone in the passenger seat. Below is the relevant introduction: 1. Introduction: The gravity sensor, also known as the gravity-sensitive sensor, is a new type of sensor technology. It uses elastic sensitive elements to form a cantilever-type displacement device and employs elastic sensitive elements to create an energy-storing spring that drives electrical contacts, completing the conversion from gravity changes to electrical signals. 2. Working principle: The gravity sensor operates based on the principle of the piezoelectric effect. The so-called piezoelectric effect refers to 'for heteropolar crystals lacking a symmetrical center, the external force applied to the crystal not only causes deformation of the crystal but also alters the polarization state of the crystal, establishing an electric field inside the crystal. This phenomenon of polarization in the medium due to mechanical force is called the positive piezoelectric effect.'