Power supply management method of vehicle security system

Abstract

The invention discloses a power supply management method of a vehicle security system. The method comprises the following steps of: starting up the system, detecting whether an external power supply exists or not by the system and selecting a corresponding power supply mode; monitoring the state of external equipment by the system and judging the working state of the system; when the system detects the condition that the voltage of the external power supply is lower than a first voltage threshold value, cutting off the power supplied by the external power supply by the system and supplying power by adopting an internal battery; when the voltage of the internal battery is lower than a second voltage threshold value, automatically powering off by a GSM (Global System for Mobile Communications)/GPRS (General Packet Radio Service) module; continuing running by a master controller and closing a GPS (Global Position System); and when the voltage of the batteries is lower than a battery protection voltage, powering off by the system. The invention improves the power supply management of the system through improving the power supply circuit of a vehicle-mounted GPS/GPRS anti-theft apparatus and ensures that the working time of the system can be prolonged under the conditions of reducing the system power consumption under an SLEEP mode, avoiding vehicle feed and only using the internal batteries so as to guarantee the normal running of an anti-theft tracking system.

Description

technical field [0001] The invention belongs to the technical field of electronic communication, and relates to a power management method, in particular to a power management method of a vehicle security system. Background technique [0002] With the development of society and economy, automobiles / motorcycles / gas mopeds have entered the daily life of ordinary people. Due to the limitations of existing technologies, vehicle anti-theft is facing a huge challenge. The anti-theft devices currently on the market mainly include mechanical locks, electronic locks, electronic alarms, and GPS / GPRS tracking anti-theft devices. Although the first three devices have certain anti-theft and alarm capabilities, when the owner is away from the vehicle, the anti-theft device cannot remotely remind the owner of the vehicle status, and the anti-theft effect is poor. The GPS / GPRS tracking anti-theft device has become the development trend of the current vehicle security equipment because it ca...

AI Technical Summary

Problems solved by technology

[0003] Most of the vehicle-mounted GPS/GPRS anti-theft devices currently on the market are large in size and have external accessories, which are easy to be identified and removed by criminals, thus affecting the anti-theft effect

In addition, although the ultra-small GPS/GPRS anti-theft equipment sold on the market has a built-in ant

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