USB (Universal Serial Bus) is gradually evolving into a standard transport protocol. There is no doubt that this development thanks to the USB interface in a wide range of electronic products in a wide range of applications. Therefore, USB connector the configuration of such general-purpose bus equipment on vehicles is a very reasonable and wise choice.

In the past 10 years, integrated communications technology in the application of various types of vehicles to the rapid development. Car radio has undoubtedly become the car's "main unit", responsible for a large number of applications and functional equipment for central coordination.

At the same time, the use of electronic products in the automotive industry is also increasing, therefore, must ensure that electronic products and existing vehicle equipment, the reliability of data transmission; In addition, USB connector the data transmission system not only in the high-end and luxury vehicles To carry out the assembly, but also will gradually develop to the standard configuration of vehicles, which has become the current mainstream trend.

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

For the current car gradually began to use the USB interface device, its connectors and cables are often not designed according to the harsh environment. Therefore, the simplest line design is not necessarily the most successful design. USB connector Equipment loosely laid on the cable, the adapter wire, especially the poor shielding of the line connection, will significantly deteriorate the internal electromagnetic condition of the vehicle.

Based on years of experience in mass production products, these product designs must also meet many other boundary conditions in the use of vehicles, including very demanding environmental requirements, such as in the event of vibration, moisture, gas pollution and mechanical stress, The part must be able to operate normally within the specified temperature range. These requirements will ensure that vehicle-related components have a life of about 15 to 20 years.

Of course, these features are also directly related to the car factory; In addition, the number of plug-in USB connector is a very important indicator. Although many electronic products such as mobile phones, computers and so on will be replaced every two or three years, it is estimated that the USB interface for vehicles must be connected for 20,000 years in about 20 years of service life.

In the next few years the interface will be miniaturized development, so the use of small or micro USB interface is only a matter of time. USB connector These problems are addressed through a comprehensive product concept, which is addressed by using a fully compatible connector and cable for vehicle use, combined with a flexible USB adapter.

The basic principle of high-speed connector:

In the development of high-frequency automotive connection system, the primary consideration of its use in harsh environments when the accuracy, mechanical strength and overall applicability of the design issues. To achieve symmetrical high-frequency electrical signals through the cable and the interface of the interference-free data communication, the following characteristics are also very important: transmission line constant impedance; USB connector dielectric material dielectric loss is small; connector with a good low-resistance terminal connection; Wire guide wire; shield part of the repeated coverage.

Obviously, if no extra effort is made, these special requirements will not be achieved. At the same time, we must also note that some conditions are still contradictory. More important is how to choose the terminal connection system, it must be able to ensure that the vehicle life within the termination of good. USB connector Possible problems here include low contact resistance and impedance, as well as the homogeneity of the socket area of the socket and terminal contacts.