What does bus signal interruption mean?

[Edmund]

Bus signal interruption refers to the complete or partial loss of wireless communication and satellite positioning signals between the bus and the dispatch center, which are used to monitor the vehicle's location. Below is a detailed introduction: 1. Satellite Positioning System: This is a technology that uses satellites to accurately locate objects. It has evolved from early systems with low positioning accuracy, inability to provide real-time positioning, and difficulty in offering timely navigation services to today's high-precision GPS global positioning system. This system allows observation of at least four satellites from any point on Earth at any given time, enabling functions such as navigation, positioning, and time synchronization. 2. Interrupt Number: This is a code assigned by the system to each interrupt source for identification and processing. The interrupt number plays a crucial role in the interrupt handling process. In an interrupt system using vector interrupt methods, the CPU must use it to locate the entry address of the interrupt service routine and achieve program transfer.