Vehicle and key finding method and system
A key-finding and key-finding technology, applied in the field of key-finding systems, can solve the problems of inability to identify the position in the key car, unable to find the key, forgetting the key, etc., to achieve the effect of controlling the search range in real time and reducing the number of antennas used
Inactive Publication Date: 2019-02-12
CH AUTO TECH CORP CO LTD
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Problems solved by technology
[0003] However, while the smart key brings convenience to the user, it also occurs that the user cannot find the key in the car and forgets that the key is in the car.
The existing technology can only identify whether the key is in the car, but cannot identify the position of the key in the car
Method used
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[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0033] The method for finding the key, the system for finding the key and the vehicle with the system for finding the key according to the embodiments of the present invention will be described below in conjunction with the accompanying drawings.
[0034] It should be noted that, as far as the test logic of the traditional smart key is concerned, two relative position states are defined: one is inside the vehicle, and the other is outside the vehicle. In this case, the relevant technology can only identify whether the smart key i...
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The invention discloses a vehicle and a key finding method and system. The key finding method comprises the steps that a key finding instruction is received; an antenna assembly of a vehicle is drivenby an initial target driving current to transmit a key finding signal, wherein the antenna assembly comprises at least three antennas; if the at least three antennas do not scan a smart key, the target driving current is gradually increased; and when one of the at least three antennas scans the smart key, the position of the smart key is determined according to signal strength information corresponding to one of the at least three antennas and fed back by the smart key. The embodiment of the key finding method can control the magnitude of the antenna target driving current by PWM waves, the field strength range of the antennas is adjusted in real time, the number of the antennas used can be reduced, and the search range can be controlled in real time to determine the position of the smartkey.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to a key-seeking method, a key-seeking system and a vehicle with the key-seeking system. Background technique [0002] Today's automotive electronics technology is developing rapidly, and smart keys have changed from an optional item for high-end configurations to a standard accessory for all models. With the maturity of technology and the continuous decline of manufacturing costs, smart keys have begun to be widely accepted and recognized by users. In the application of smart keys, the most convenient functions are passive entry and one-button start. The traditional remote control key realizes the opening and closing function of the car door, but a mechanical key is required to operate the car to start, which is cumbersome and inconvenient to operate. With the continuous innovation of technology, the door opening and closing of the smart key and the starting of the car can be re...
Claims
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Inventor 陆群王颖鑫
Owner CH AUTO TECH CORP CO LTD