A reminder device for forgetting to dial the key and not closing the door

Abstract

The invention discloses a reminding device for reminding the forgotten-pulling of a key and the forgotten-closing of a door. The device comprises a pyroelectric body induction module, a single-chip microcomputer, a relay drive circuit, a relay, a buzzer reminding device, a key insertion trigger switch and a door magnetic alarm. The power input end of the buzzer reminding device is connected in series with the normally closed end of the relay. The key insertion trigger switch is arranged besides the lock hole of a door lock. The normally opened end of the key insertion trigger switch is connected in series with the power input end of the buzzer reminding device. The normally opened end of the relay is connected in series with the power input end of the door magnetic alarm. The reminding device is simple in structure and convenient to use. When a key is inserted into the door lock, the buzzer reminding device sends out an alarm in real time as long as a user does not enter an area outside a door or have left the area outside the door. That means, the user is reminded of the condition that the key has already been inserted into the door lock. If the user gets out of the door without locking the door, the door magnetic alarm sounds to alarm immediately as long as the user enters the area outside the door. Therefore, the user is reminded of the condition that the door has not been locked. Therefore, the problem in the prior art that people usually forget to pull out the key and lock the door when going out can be solved.

Description

technical field [0001] The invention relates to the technical field of alarm devices, in particular to a reminder device for forgetting to dial a key and not closing a door. Background technique [0002] Considering the safety of the property in the room, many people will lock the door when they go out. At the same time, some doors can be opened no matter whether the key is pulled out or not. People are easily distracted when they have more things in their hands. For those who have poor concentration, it is always easy to forget to close the door or forget the key in the lock hole. Can cause great threat; Such as the utility model patent of Chinese Patent No. 02278951.0 in the prior art, on August 6th, 2003, disclosed a kind of reminder device for forgetting to pull out the key of door lock and forgetting to close the door, it comprises power supply circuit, time delay circuit and the alarm sounding circuit connected to the output end of the delay circuit, a power switch to...

AI Technical Summary

Problems solved by technology

[0002] Considering the safety of the property in the room, many people will lock the door when they go out. At the same time, some doors can be opened no matter whether the key is pulled out or not. People are easily distracted when they have more things in their hands. For those who have poor concentration, it is always easy to forget to close the door or forget the key in the lock hole. Can cause great threat; Such as the utility model patent of Chinese Patent No. 02278951.0 in the prior art, on August 6th, 2003, disclosed a kind of reminder device for forgetting to pull out the key of door lock and forgetting to close the door, it comprises power supply circuit, time delay circuit and the alarm sounding circuit connected to the output end of the delay circuit, a power switch touched by a key inserted into the lock cylinder is connected in series between the power supply circuit and the power input end of the delay circuit, which solves the problem of people forgetting to pull out the key after closing the door Fault, but it has not solved the problem of not closing the door and alarm when entering and exiting, and most of the commercial houses in the city are equipped with elevators. When the door is locked, the faster person may have entered the elevator before the six-second delay time set for the alarm delay, or walked away from the door while answering the phone. It will sound, and when the key is inserted into the door lock for more than six seconds, when the alarm sounds, the person may have entered the elevator or is away from the door. At this time, if the alarm sounds again, it will be easily ignored, and the key will be left in the door lock If you go up and send out an alarm, it will remind others that there is a key on the door, which will cause a greater safety hazard; People, or there are many things in their hands, cannot quickly unlock and enter the door. At this time, the time for the key to be inserted into the door lock is likely to be longer than the set delay alarm time, and a false alarm will be generated. In this case, the person is still at the door, which does not belong to the Forget to pull out the key, but the alarm will still be triggered, which will definitely affect the user experience

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