USB is gradually developing into a standard transmission protocol

USB (Universal Serial Bus) is gradually developing into a standard transmission protocol. There is no doubt that this development has benefited from the widespread application of USB interfaces in many electronic products. Therefore, it is a very reasonable and wise choice to configure such universal bus devices on the vehicle.

　　In the past ten years or so, the application of integrated communication technology in various vehicles has developed rapidly. The car radio device has undoubtedly become the "main unit" in the car, responsible for the central coordination of a large number of applications and functional equipment.

At the same time, electronic products (such as laptops, iPods, mobile phones, MP3 players and memory sticks, etc.) are increasingly used in automobiles. Therefore, it is necessary to ensure data transmission between electronic products and existing vehicle equipment In addition, the data transmission system is not only assembled on mid-to-high-end and luxury vehicles, but also gradually developed to standard configuration vehicles, which has become the current mainstream trend.

　　USB is gradually developing into a standard transmission protocol. Although a large number of related transmission accessories are currently available on the market, especially in connection technology (such as connectors and transmission lines), and these accessories are also very convenient and fast to use, but in some occasions, the use of these products will make Applications become complex and risky.

　　 For USB interface devices that are gradually being used in cars, their connectors and cables are often not designed according to the harsh environment of the car. Therefore, the simplest circuit design may not be the most successful design. Loosely laid cables and adapter wires on the equipment, especially poorly shielded wiring connections, will significantly worsen the electromagnetic conditions inside the vehicle.

Based on years of experience in the production of mass-produced products, Tyco Electronics believes that these product designs must also meet many other boundary conditions in vehicle use, including very harsh environmental requirements, such as vibration, humidity, and gas pollution. In the case of mechanical stress and mechanical stress, the relevant components must be able to operate normally within the specified temperature range. These requirements will ensure that the relevant parts of the vehicle have a service life of about 15 to 20 years.

　　Of course, these functions are also directly related to automobile manufacturers; in addition, the number of plug-in uses is also a very important indicator of USB connectors. Although many electronic products such as mobile phones and computers have to be replaced every two or three years, it is estimated that the USB interface for vehicles must be able to be plugged in 20,000 times during the service life of about 20 years. Figure 1 shows Tyco Electronics' reliable automotive USB connection technology.

　　In the next few years, the interface will be miniaturized, so it is only a matter of time to use a small or micro USB interface. Tyco Electronics solves these problems through a comprehensive product concept. The principle is to use connectors and cables that are fully compatible with vehicle usage, combined with a flexible USB adapter.