Auxiliary door opening device and control method in ATM machine protection cabin

Abstract

The invention discloses an auxiliary door-opening device in a protective cabin of an ATM machine and a control method thereof. The device includes a central processing unit connected to a sound detection module, a cabin door state detection circuit, a human body recognition sensor for detecting a human body in the cabin, and an electronic switch circuit respectively. The switch of the electronic switch circuit is connected in parallel with the door-opening button switch in the cabin by connecting wires; the central processing unit includes a sound signal sample library, and the sound detection module is two, including a microphone and an audio amplifier circuit connected in series , A / D conversion circuit; one microphone is installed inside the cabin, and the other microphone is installed outside the cabin. The method is that when the frequencies of the two microphone signals are the same, and the amplitude of the signal of the microphone inside the cabin is greater than that of the signal of the microphone outside the cabin, or the frequencies of the signals of the two microphones are inconsistent, then the frequency of the signal of the microphone inside the cabin is compared with the samples of crying and dog sounds. exists, and the amplitude is greater than the set threshold, the analog signal of the door-opening button in the cabin is output to open the cabin door.

Description

technical field [0001] The invention relates to an electronic system for an ATM machine protection cabin door, in particular to an auxiliary door opening device using specific audio in the ATM machine protection cabin and a control method thereof. Background technique [0002] At present, in the ATM machine withdrawal room (cash booth) of the bank, in order to protect depositors from withdrawing money more safely, some of them are equipped with (closed protective cabins similar to closed telephone booths) closed protective cabins (rooms) outside each ATM automatic teller machine to realize "One person, one cabin", the cabin door is set as a protective door of the electronic system (once entering the withdrawal room, the door lock will be automatically locked and cannot be opened from the outside, so that citizens will be safer when withdrawing money inside), The protective door of the electronic system is provided with a door-opening button inside the cabin door, some are pr...

AI Technical Summary

Problems solved by technology

[0004] The technical problem that the purpose of the present invention and solution is to exist in the existing ATM machine protective cabin and can trap the defective of child, propose a kind of auxiliary door opening device and control method thereof in the ATM machine protective cabin, realize detecting that there is a child in the ATM machine protective cabin. When a child cries or / and a pet dog barks, the door opening device sends a door opening control signal to the electronic system of the protective door of the ATM machine protective cabin, so that the electronic system automatically opens the cabin door

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