A device for automatically opening the door after the ATM protective cabin is locked and its control method

Abstract

The invention discloses an automatic door opening device after locking an ATM machine protective cabin door and a control method for the automatic door opening device. The device comprises a microphone, an audio frequency amplifying circuit, a filter circuit, an amplitude value detecting circuit, a reference power supply, a voltage comparator, a processor unit, an electronic switch circuit and an in-cabin cabin door state detecting circuit, which are sequentially connected in the cabin in series; an in-phase input end of the voltage comparator is connected with output of the amplitude value detecting circuit; an inverse-phase input end of the voltage comparator is connected with the reference power supply; the output of the reference power supply is connected with input of the processor unit; the cabin door state detecting circuit is connected with another input of the processor unit; a control end of the electronic switch circuit is connected with output end of the processor unit; and the two ends of the switch are mutually spliced with the two ends of an in-cabin door opening button respectively. The control method comprises the following steps: when the cabin door of the ATM machine protective cabin is closed and the automatic door opening device detects that child's crying is larger than 55 decibels, outputting a door opening signal to simulate the in-cabin door opening button, thereby opening the cabin door and making a trapped child get out of the ATM machine protective cabin.

Description

technical field [0001] The invention relates to an electronic system for an ATM protective cabin door, in particular to a device for automatically opening the door after the ATM protective cabin is locked 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 provided with a...

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 ATM machine protective cabin automatic door-opening device and its control method after locking the door, realize detecting that there is a child in the protective cabin. When a child is trapped, send a control signal to the electronic system of the protective door of the protective cabin of the ATM, and the electronic system will automatically open the door

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