Vehicle antitheft warning system

Abstract

The invention discloses a vehicle antitheft warning system, which comprises a mobile terminal, an intelligent vehicle-mounted unit, a distance test unit, a vehicle monitoring unit and a wireless communication module, wherein the intelligent vehicle-mounted unit, the distance test unit and the vehicle monitoring unit are communicated through a CAN (controller area network) bus; the distance test unit is used for detecting whether the distance between the mobile terminal and the vehicle is greater than a preset value or not when the vehicle is in a flameout and power-down state; if so, the intelligent vehicle-mounted unit is controlled to wake up the CAN bus, and an inquiry command is sent to the vehicle monitoring unit through the CAN bus; the vehicle monitoring unit receives the inquiry command and then sends vehicle state information to the intelligent vehicle-mounted unit. The vehicle antitheft warning system provided by the invention has the advantages that the intelligent vehicle-mounted unit is connected with the CAN bus; when an automobile detects that a user is not in a preset range, the intelligent vehicle-mounted unit sends the vehicle state information to the mobile terminal so as to perform warning reminding.

Description

technical field [0001] The invention relates to the field of automobile anti-theft devices, in particular to a vehicle anti-theft alarm system based on an intelligent vehicle-mounted unit and a CAN bus. Background technique [0002] Traditional electronic anti-theft devices need to be specially equipped with a detection element for each anti-theft point, and connect a line to the anti-theft device host for each detection element. For ordinary cars, 12 or more wirings are usually required. It is not only time-consuming and labor-intensive to install a car anti-theft device, but also too many lines are easily damaged, which will bring potential safety hazards. Contents of the invention [0003] The main purpose of the present invention is to provide a vehicle anti-theft alarm system, which aims to reduce lines and can actively send vehicle conditions to users. [0004] To achieve the above object, the present invention provides a vehicle anti-theft alarm system, comprising ...

AI Technical Summary

Problems solved by technology

[0002] Traditional electronic anti-theft devices need to be specially equipped with a detection element for each anti-theft point, and connect a line to the anti-theft device host for each detection element. For ordina

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