Composite alarm detector and anti-theft alarm method for museum showcase

Abstract

The invention relates to a composite alarm detector for a museum showcase. The composite alarm detector comprises a power supply module, an ultrasonic generation module, an ultrasonic receiving module, a mobile detection module, a main control module, a wireless communication module and an alarm host, wherein the power supply module is used for supplying power to each component and is internally provided with a rechargeable battery. The invention further provides an anti-theft alarm method for the museum showcase. The anti-theft alarm method comprises the steps of periodically transmitting ultrasonic waves into a closed space of the showcase; collecting reflected ultrasonic waves in real time; detecting the spatial change of the showcase, specifically, demodulating the ultrasonic wave collected each time, and if the attribute of the demodulated ultrasonic wave is inconsistent with the attribute of the initial ultrasonic wave, triggering an alarm; and detecting the movement change of the showcase and triggering an alarm. According to the invention, any change of the showcase cavity and the cavity space form is monitored by using ultrasonic waves to generate an alarm, the acceleration is synchronously detected, the moving state of the showcase is monitored, the situation that the showcase is directly moved away under the condition that the space in the showcase is not touched is prevented, the functions are practical, and the comprehensive monitoring of the showcase condition is realized.

Description

technical field [0001] The invention belongs to the technical field of display cabinet anti-theft, and in particular relates to a composite alarm detector and an anti-theft alarm method for museum display cabinets. Background technique [0002] At present, there is no good and reliable anti-theft equipment inside the exhibition cabinets of the museum, because the safety requirements are that all the inside of the exhibition hall will be powered off when there is no one there, resulting in the fact that the inside of the exhibition cabinets is actually in a state of no monitoring after the museum is closed. Although museum showcases are generally equipped with anti-theft systems, the main form of anti-theft facilities for showcases currently on the market is triggering, such as opening detectors to detect whether the showcases are open, infrared anti-theft, and motion detectors, vibration sensors and other equipment , more wiring, higher false alarm rate, and inconvenient ins...

AI Technical Summary

Problems solved by technology

[0002]At present, there is no good and reliable anti-theft equipment inside the museum showcases, because the safety requirements are that all the inside of the exhibition hall will be powered off when there is no one there, resulting in the fact that the interior of the exhibition cabinets is actually in a closed state after the museum is closed. No monitoring status

Although museum showcases are generally equipped with anti-theft systems, the main form of anti-theft facilities for showcases currently in use on the market is the trigger method, such as the opening detector to detect whether the showcase is opened, infrared anti-theft, in addition to motion detectors, vibration sensors and other equipment , more wiring, higher false alarm rate, inconvenient installation

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