The car alarm is a device installed on the car to increase the difficulty of car theft and extend the time of car theft. It is the protector of the car. By matching the anti-theft device with the car circuit, it can prevent theft, infringement and protection of the vehicle. With the development of computer networks and embedded technologies, car anti-theft systems have evolved from traditional mechanical and electronic anti-theft devices to more intelligent network-based anti-theft systems.
The In-Vehicle Infotainment (IVI) is an in-vehicle integrated information processing system based on a vehicle-mounted bus system and an Internet service. IVI can realize a series of applications including 3D navigation, real-time road conditions, fault detection, vehicle information, mobile office, etc., greatly improving the electronic, network and intelligent level of vehicles.
The CAN (Controller Area Network) controller area network was developed by the German company BOSCH and eventually became an international standard. Among many automobile buses, CAN bus has an important position. It is a standard bus for communication between automotive electronic devices. It has been widely used in automotive distributed control systems. It has a CAN underlying protocol for large trucks and heavy machinery vehicles. The J1939 protocol. The system proposes a method for integrating the anti-theft function and the infotainment function of the automobile, and effectively utilizes the existing resources of the automobile to realize the optimization of the structure and function of the in-vehicle electronic system.
Compared with existing systems on the market, this system has the following advantages:
(1) Integrated design of anti-theft and infotainment system, low cost, simplified structure and powerful function;
(2) Adopting network-based anti-theft system, which has the advantages of stable operation, strong real-time performance and high reliability;
(3) The system CAN bus part can be combined with other body electronics systems to facilitate secondary development.
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