Antenna system of PEPS system, key searching method, PEPS system and vehicle

Abstract

The invention relates to the technical field of vehicles, and provides an antenna system of a PEPS system, a key searching method, the PEPS system and a vehicle. The antenna system comprises: a firstlow-frequency antenna arranged at a middle position inside a vehicle; a second low-frequency antenna and a third low-frequency antenna which are respectively arranged on a driving side and a co-driverside outside the vehicle; a fourth low-frequency antenna which is arranged at the position of a trunk in the vehicle, wherein the first low-frequency antenna, the second low-frequency antenna, the third low-frequency antenna and the fourth low-frequency antenna are configured to generate a field intensity carrier for searching a key, the relative positions of the first low-frequency antenna, thesecond low-frequency antenna, the third low-frequency antenna and the fourth low-frequency antenna are configured to enable the antenna system to generate field intensity carrier waves capable of covering the interior of the whole vehicle; the fourth low-frequency antenna is configured to generate a field intensity carrier wave covering an external area of the trunk of the vehicle. The number of antennas is reduced, and the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of vehicles, in particular to an antenna system of a keyless entry and start (Passive EntryPassive Start, PEPS) system, a key search method, the PEPS system and a vehicle. Background technique [0002] With the continuous improvement of consumers' requirements for vehicle comfort, the PEPS system has gradually become the standard configuration of various models. On the premise of satisfying the basic functions of the PEPS system, how to improve the user experience and reduce the cost of the PEPS system has gradually become relevant. Manufacturers are increasingly concerned about the issue. [0003] figure 1 It is a schematic diagram of the antenna layout in the PEPS system of the existing vehicle. Such as figure 1 As shown, the existing mass-produced models adopt the scheme of internal and external layout of 6 low-frequency antennas, which includes the layout of the No. 1 antenna, No. 2 antenna an...

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a PEPS system antenna system to solve the problems of high cost and relatively poor user experience of the scheme of 6 low-frequency antennas used in existing models.

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