Method and system for wireless car search
A car-finding and wireless technology, applied in the field of car keyless entry systems, can solve problems such as weak environmental adaptability and difficulty in identifying the specific location of the buzzer, so as to avoid inconvenience and overcome weak environmental adaptability.
Active Publication Date: 2016-12-21
BYD CO LTD
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Problems solved by technology
Although the above method can realize the function of finding the car, it has weak adaptability to the environment. In a noisy application environment, it will be difficult for the owner to distinguish the specific location of the buzzer sound.
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[0024] 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.
[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the descrip...
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A wireless vehicle tracking method provided by the embodiment of the invention comprises the following steps: a user triggers a vehicle tracking function of a handheld module, and the handheld module issues a vehicle tracking request to a vehicle-mounted module; the vehicle-mounted module receives the vehicle tracking request from the handheld module and sends a vehicle tracking request response to the handheld module; the handheld module receives the vehicle tracking request response sent by the vehicle-mounted module; the user carries the handheld module to repeat the above steps three times in three vehicle tracking positions to obtain three vehicle tracking request response signals, and a micro control unit in the handheld module calculates the position of the vehicle-mounted module according to the three vehicle tracking positions and the strength of the three vehicle tracking request response signals; and the handheld module displays the position of the vehicle-mounted module to the user, and the position of the vehicle-mounted module is the position of a real vehicle. According to the invention, the direction and distance of a vehicle can be determined more accurately through two-way communication, the shortcoming of poor environment adaptability of a one-way communication scheme for traditional vehicle tracking is overcome, and inconvenience caused by a complex environment to vehicle tracking by a vehicle owner is avoided.
Description
technical field [0001] The present invention relates to the field of automobile keyless entry system (Passive Keyless Entry, PKE), in particular to a wireless car search method and system based on Received Signal Strength Indication (RSSI). Background technique [0002] RSSI (Received Signal Strength Indication), that is, received signal strength indication, is a positioning technology that measures the distance between the signal point and the receiving point by the strength of the received signal, and then performs positioning according to the corresponding data calculation. In the wireless communication field, the RSSI signal plays a decisive role, but the application of the RSSI signal in the existing automotive PKE (Passive Keyless Entry) field is almost zero. [0003] In today's society, the living environment is becoming more and more complex, and the parking spaces are becoming increasingly tense. The car-finding function in the PKE system is very important. The car...
Claims
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IPC IPC(8): G08G1/123G01S5/14H04B17/318
Inventor 李雪冬
Owner BYD CO LTD