Battery car anti-theft alarm device and method

Abstract

The invention relates to the field of anti-theft technology, in particular to a battery car anti-theft alarm device and a method, wherein the method comprises a power supply is connected, a relay works, and a normally closed contact is in an off state, when motor car signals are sent, a horn of a car alarm sounds, a build-in horn of the car alarm also can sound, and a light emitting diode flashes to alarm. A charging plug is pulled up from an A position (such as a three-core coaxial line), a charging loop is cut off, break-over voltage on the two ends of the light emitting diode disappears, the light emitting diode changes into a non-conducting state from a conducting state, work current loops on the two ends of a relay coil are cut off, the normally closed contact returns to a closed state, and an audible and visual alarm works. The battery car anti-theft alarm device uses wired protection, uses cables to transport signals, alarms through sound and light, double warms on vision and auditory, and is intuitive and clear. A 36V-48V low voltage direct current power supply which is changed from a 220V alternating current power supply leads to the front of an electric car, thereby eliminating hidden trouble of leakage. The battery car anti-theft alarm device and the method use special circuit design, thereby leading motor cars to obtain multi-azimuth protection.

Description

[technical field] [0001] The invention relates to the field of anti-theft technology, in particular to an anti-theft alarm device and method for a battery car. [Background technique] [0002] With the enhancement of people's awareness of environmental protection, battery cars driven by electricity have been recognized by the market for their non-polluting, durable and other characteristics, but electric cars are easy to be stolen and cause property losses. [0003] Existing electric vehicle anti-theft products are divided into radio long-distance protection and wired connection protection, all of which utilize triggers in the circuit and built-in alarm devices to prompt alarms, such as a battery car charging anti-theft alarm device disclosed in the domestic patent CN280666Y, including two plugs and three plugs. The power connection line of the plug, the relay, the alarm, the grounding wire and the zero line of the three plugs are connected to the grounding column of the seco...

AI Technical Summary

Problems solved by technology

However, due to the low recognition of the sound of the alarm, the owner cannot be sure immediately, which provides an opportunity for criminals to take advantage of it.

When in use, in order to

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