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

An in-vehicle system and anti-interference technology, applied in the field of in-vehicle system communication, can solve a large number of software modification problems, achieve the effect of satisfying signal integrity and avoiding common frequency interference

Inactive Publication Date: 2016-03-09
HUIZHOU DESAY SV AUTOMOTIVE
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  • Claims
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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

Method used

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

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Embodiment Construction

[0024] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The accompanying drawings are only for reference and description, and do not constitute a limitation to the protection scope of the present invention.

[0025] In this embodiment, the WiFi and Bluetooth modules of the vehicle system can effectively avoid co-frequency interference from the aspects of module layout design and antenna circuit board optimization.

[0026] Such as figure 2 As shown, the present embodiment provides a WIFI and bluetooth anti-interference device for vehicle-mounted systems, the WIFI module in the vehicle-mounted system is separated from the bluetooth module by a set distance, and an antenna ANT is arranged between the WIFI module and the bluetooth module. , the communication line of the antenna ANT adopts an inner layer equal-length line and equal-impedance wiring layout.

[0027] Such as image 3 As shown, the distanc...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B5/02H04K3/00H04W4/00H04W12/00H04B5/48
CPCH04K3/80H04W4/80H04W12/00H04B5/48
Inventor 崔功强
Owner HUIZHOU DESAY SV AUTOMOTIVE
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