WIFI and Bluetooth anti-interference device and method for vehicle-mounted system

Abstract

The invention provides a WIFI and Bluetooth anti-interference device for a vehicle-mounted system. A WiFi module and a Bluetooth module in the vehicle-mounted system are arranged in a manner that the WiFi module and the Bluetooth module are separated from each other by a set distance; an antenna is arranged between the WiFi module and the Bluetooth module; and the communication lines of the antenna are wired in an inner layer equal-length and equal-impedance manner. The invention also provides a WIFI and Bluetooth anti-interference method for a vehicle-mounted system. The method includes the following steps that: a WiFi module and a Bluetooth module in the vehicle-mounted system are separated from each other by a set distance; and wiring layout is realized according to a rule that inner layer equal-length and equal-impedance communication lines of an antenna are adopted. According to the WIFI and Bluetooth anti-interference device and method for the vehicle-mounted system of the invention, the set distance is kept between the WiFi module and the Bluetooth module in the vehicle-mounted system, the communication lines of the antenna arranged between the WiFi module and the Bluetooth module are wired in an inner layer equal-length and equal-impedance manner, and therefore, the separation degree of the WiFi module and the Bluetooth module is ensured, wireless and Bluetooth communication of the vehicle-mounted system not only satisfy requirements for signal integrity and but also can avoid co-channel interference.

Description

technical field [0001] The invention relates to the technical field of in-vehicle system communication, in particular to a WIFI and Bluetooth anti-interference device and method for an in-vehicle system. Background technique [0002] At present, car audio systems are more and more inclined to the development of wireless networks. The working frequency of car WIFI is mainly concentrated in the range of 2.4GHZ, and the working frequency of car Bluetooth is roughly 2.4GHZ. The same frequency can easily cause co-frequency interference, resulting in a large amount of data loss and unstable transmission. [0003] Such as figure 1 As shown, the vehicle-mounted host system integrates the Bluetooth module and the WiFi module. Since both of them must be connected to the core processor of the system after data processing, the two modules are processed close to each other for the sake of signal integrity. The isolation is very low. Such a layout will cause mutual interference to the r...

AI Technical Summary

Problems solved by technology

[0004] At present, the co-existence of WiFi and Bluetooth is the basic function of mainstream consumer electronics products. There are also many solutions to the problem of common frequency interference. When the antenna, WiFi and Bluetooth are all performing normal data transmission, when the WiFi has data to transmit, it will suppress the Bluetooth data transmission, but this method requires a lot of software modification

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