Frequency-hopping communication method and system applied to automobile electronic burglary prevention as well as application

A technology of frequency hopping communication and automotive electronics, applied in the field of communication, can solve the problems of communication data monitoring, interference and anti-theft purposes cannot be satisfied, and achieve the effect of ensuring data security and improving anti-theft effect.

Active Publication Date: 2016-08-17
DALIAN ROILAND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the times, vehicles have become an indispensable item in our life; with the popularization of vehicles and the advancement of technology, the old car anti-theft system based on a single carrier frequency uses fixed carrier frequency communication, which has been repeatedly interfered by malicious , The communication data is maliciously monitored, the purpose of the original vehicle anti-theft can no longer be satisfied, so the new anti-jamming communication method applied to the automobile anti-theft system is particularly important

Method used

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  • Frequency-hopping communication method and system applied to automobile electronic burglary prevention as well as application

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Embodiment 1

[0026] Embodiment 1: A frequency hopping communication method applied to automobile electronic anti-theft. The vehicle-mounted terminal and the handheld terminal have the same basic password sequence and the same multiple sets of pseudo-random sequences. The pseudo-random sequence generates a corresponding frequency-hopping spectrum through the basic password sequence , the basic cipher sequence generates corresponding frequency hopping patterns through a set of pseudo-random sequences, using different pseudo-random sequences to generate different frequency hopping patterns, so as to realize the diversification of frequency hopping patterns, when the vehicle-mounted terminal and the handheld terminal communicate through the frequency hopping pattern synchronization first , effective frequency hopping communication after synchronization.

[0027] In this embodiment, the basic password in the basic password sequence does not directly participate in data communication, and can be ...

Embodiment 2

[0029] Embodiment 2: the same as each technical solution in embodiment 1, more specifically: the method for described map synchronization is:

[0030] S1. The vehicle terminal according to the basic password sequence L i Generate frequency point f through pseudo-random sequence i , choose to send the frequency point and send a communication handshake command on the frequency point for frequency hopping spectrum synchronization.

Embodiment 3

[0031] Embodiment 3: It is the same as each technical solution in Embodiment 1 or 2, more specifically: the method for effective frequency hopping communication after frequency hopping graph synchronization is:

[0032] S2: The vehicle-mounted terminal is used to receive the handshake signal (ACK) sent by the handheld terminal within 3ms after sending the communication handshake command. If the vehicle-mounted terminal receives the handshake signal (ACK) sent by the handheld terminal correctly, it indicates that the vehicle-mounted terminal and the handheld terminal are at the same time At the same frequency point at all times and the data communication on this frequency point is normal, the synchronization of the frequency hopping map is completed, and the normal frequency hopping communication process is entered, see S6;

[0033] S3: If the vehicle-mounted terminal receives an error in the handshake signal (ACK) sent by the handheld terminal or the vehicle-mounted terminal do...

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Abstract

The invention discloses a frequency-hopping communication method and system applied to automobile electronic burglary prevention as well as application, and belongs to the technical field of communication. The key technical points are that a frequency-hopping communication method is adopted in a process of communication between a vehicle-mounted terminal (base station system) and a handheld terminal (intelligent key), that is to say, a way with an unset carrier frequency and a random and diversified frequency hopping spectrum is adopted to realize the purposes of preventing an anti-theft system from being interfered and monitored maliciously while communicating. According to the frequency-hopping communication method and system as well as the application, the advantages such as diversified methods, implementation convenience, rational design and wide application are obtained.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a frequency-hopping communication method applied to automobile electronic anti-theft. Background technique [0002] With the development of the times, vehicles have become an indispensable item in our life; with the popularization of vehicles and the advancement of technology, the old car anti-theft system based on a single carrier frequency uses fixed carrier frequency communication, which has been repeatedly interfered by malicious 1. The communication data is maliciously monitored, and the purpose of the original vehicle anti-theft can no longer be satisfied. Therefore, the new anti-jamming communication method applied to the automobile anti-theft system is particularly important. Contents of the invention [0003] In order to solve the weak anti-interference ability of the communication of the automobile electronic anti-theft system, the purpose of the pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7156B60R25/20
CPCB60R25/20H04B1/7156
Inventor 田雨农李伟刘欣苍柏
Owner DALIAN ROILAND SCI & TECH CO LTD
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