Warning device based on vehicle-mounted CAN bus

Abstract

The invention discloses a warning device based on a vehicle-mounted CAN bus, comprising a CAN bus, a CAN bus transceiver connected with the CAN bus, a central processing unit connected with the CAN bus transceiver, a wireless communication module connected with the central processing unit, and a mobile terminal communicated with the wireless communication module and embedded with a monitoring APP. The warning device based on the vehicle-mounted CAN bus, disclosed by the invention, is simple in monitoring principle, low in manufacturing cost, strong in system stability and capable of reducing occurrence of vehicle stolen events.

Description

technical field [0001] The invention relates to an automobile monitoring and alarming device, in particular to an alarming device based on a vehicle-mounted CAN bus, and belongs to the technical field of automobile monitoring and alarming. Background technique [0002] In order to prevent the vehicle from being stolen, there are many kinds of vehicle-mounted alarm devices on the market, and the alarm generation methods are also different; some use vehicle-mounted GPS systems, some use acceleration sensors, and some use changes in the state of door and window locks; There are three main types of vehicle security systems in the world. The first type is based on the common GPS positioning system, which generates an alarm when the alarm range is preset, resulting in a delay in the generation of alarm information; the second type is based on acceleration sensors, pressure sensors, etc. Install sensor devices, the false alarm rate of this type is extremely high, causing customers ...

AI Technical Summary

Problems solved by technology

[0002] In order to prevent the occurrence of vehicle theft incidents, there are many kinds of vehicle-mounted alarm devices on the market, and the alarm generation methods are also different; some use vehicle-mounted GPS systems, some use acceleration sensors, and some use changes in the state of door and window locks; There are three main types of vehicle security systems in the world. The first type is based on the common GPS positioning system, which generates an alarm when the alarm range is preset, resulting in a delay in the generation of alarm information; the second type is based on acceleration sensors, pressure sensors, etc. Install sensor devices, the false alarm rate of this type is extremely high, causing customers to often receive alarm information; the third type is based on the alarm generated when the door and window lock status of the vehicle OBD changes. Since the standard OBD does not contain door and window lock information, it is necessary to crack the vehicle manufacturer. Defined communication protocol, resulting in heavy work for this solution

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