CN104481264A - Intelligent alarm anti-theft door-lock system - Google Patents

Abstract

The invention discloses an intelligent alarm and anti-theft door lock system, which includes a single-chip microcomputer, which is connected with a door lock switch control circuit, a key insertion monitoring circuit and an RF module. The single-chip microcomputer also controls the operation of the sound and light alarm circuit and the GSM communication module, and The GSM communication module is connected to the mobile phone terminal of the user through a wireless network, and a transmitting module is provided to match the above-mentioned RF module. The above-mentioned door lock switch control circuit is located inside the door lock, and the above-mentioned key insertion monitoring circuit includes an infrared transmission light sensor. The infrared transmission light sensor is arranged inside the door lock. This is an intelligent alarm anti-theft door lock system with simple structure and ingenious design, which can monitor the state of the door lock at any time, and automatically send alarm information to the surrounding and the owner when theft occurs.

Description

Intelligent alarm anti-theft door lock system

technical field

The invention relates to an anti-theft system, in particular to an intelligent alarm anti-theft door lock system.

Background technique

In order to prevent others from entering the room without permission, a door lock is provided on the door, and the door lock can only be opened by using the key matched with it. However, some criminals can use various tools (such as master keys, thin hooks, plastic sheets, tin foil, etc.) to open the door locks, which will bring people economic and property losses. Doors or door locks, but most of these doors and door locks are improved in mechanical structure to prevent theft by increasing the complexity of illegally opening the door locks, and with the advancement of thieves' technology and tools, these doors Or door lock also can't realize anti-theft well. Especially once this type of traditional door lock is opened, there is no way to notify the homeowner who is not on the scene, causing the homeowner to be unable to take various remedial measures in time and in real time, resulting in economic losses. Therefore need a kind of novel anti-theft door lock that can solve the above problems now.

Contents of the invention

The present invention aims to solve the above-mentioned deficiencies in the prior art, and proposes an intelligent alarm anti-theft door lock with simple structure and ingenious design, which can monitor the state of the door lock at any time, and automatically send alarm information to the surroundings and the owner when theft occurs. system.

The technical solution of the present invention is: an intelligent alarm and anti-theft door lock system, which is characterized in that: the system includes a single-chip microcomputer, which is connected with a door lock switch control circuit, a key insertion monitoring circuit and an RF module. Also control the sound and light alarm circuit and the GSM communication module to work, and the GSM communication module is connected to the user's mobile phone terminal through a wireless network, and the above-mentioned RF module is matched with a transmitter module, and the above-mentioned door lock switch control circuit is located inside the door lock. When the door lock bolt is in the extended state, the door lock switch control circuit outputs a low level to the single-chip microcomputer. When the door lock bolt is in the recovery state, the door lock switch control circuit outputs a high level to the single-chip microcomputer, and the above-mentioned key is inserted into the monitoring circuit. Including an infrared transmission light sensor, the infrared transmission light sensor is set inside the door lock, when no key is inserted into the door lock, the infrared light emitted by the infrared transmission light sensor is not blocked, the key insertion monitoring circuit outputs a low level to the single chip microcomputer, when the key is inserted When the door is locked, the infrared light emitted by the infrared transmission light sensor is blocked, and the key insertion monitoring circuit outputs a high level to the single-chip microcomputer.

Compared with the prior art, the present invention has the following advantages:

The intelligent alarm and anti-theft door lock system of this structural form has simple structure, ingenious design and reasonable layout. Aiming at the various problems of traditional mechanical anti-theft door locks, it designs an intelligent system that can automatically judge whether a key is inserted into the door lock and whether the door lock is opened. It can verify whether the unlocker is the legal owner and Send an alarm to the surrounding environment and the homeowner in time, so that the homeowner can take remedial measures in time and quickly, and reduce or even avoid the economic loss of the homeowner. Moreover, its manufacturing process is simple and its manufacturing cost is low, so it can be said that it has many advantages, and is especially suitable for popularization and application in this field, and its market prospect is very broad.

Description of drawings

Fig. 1 is a system composition block diagram of an embodiment of the present invention.

Fig. 2 is a system flow chart of the embodiment of the present invention.

Detailed ways

The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. As shown in Figure 1 and Figure 2: an intelligent alarm and anti-theft door lock system, the system includes a single-chip microcomputer for signal processing and transmission, connected with this single-chip microcomputer is provided with a door lock switch control circuit, key insertion monitoring circuit and RF module, at the same time, the single-chip microcomputer can also control the sound and light alarm circuit and the GSM communication module to work, and the above-mentioned GSM communication module is also connected to the user's mobile phone terminal through a wireless network (such as 2G network, 3G network and other conventional networks). The matching RF module is equipped with a transmitting module, and the user carries the transmitting module with him for data transmission with the RF module;

The above-mentioned door lock switch control circuit is set inside the door lock. When the door lock bolt is in the extended state (that is, in the locked state), the door lock switch control circuit outputs a low level to the single-chip microcomputer. state (that is, when it is in the open state), the door lock switch control circuit outputs a high level to the single-chip microcomputer, and the single-chip microcomputer can judge that the door lock has been opened at this time;

The above-mentioned key insertion monitoring circuit includes an infrared transmission light sensor, which is arranged inside the door lock. When no key is inserted into the door lock, the infrared light emitted by the infrared transmission light sensor is not blocked, and the key insertion monitoring circuit Output low level to the single-chip microcomputer, but when the key is inserted into the door lock, the infrared light emitted by the infrared transmission light sensor will be blocked by the key, the key insertion monitoring circuit outputs high level to the single-chip microcomputer, and the single-chip microcomputer can judge that the key has been inserted into the door at this time Lock.

The process flow of the intelligent alarm and anti-theft door lock system of the embodiment of the present invention is shown in the figure: firstly, the system is initialized, and then the single-chip microcomputer judges whether the identity of the person who unlocks the lock is legal according to the signal sent by the RF module. The door lock can be opened normally, if it is illegal, it will enter the alarm state; after entering the alarm state, first judge whether there is an illegal key inserted, if there is an illegal key inserted, start the sound and light alarm circuit to alarm, and monitor whether the door lock is opened, If the door lock is opened in an illegal state, an alarm message is automatically sent to the user's mobile phone terminal through the GSM communication module to notify the user, and if the door lock is not opened, then return to the beginning of the system program.

The working process of the intelligent alarm and anti-theft door lock system of the embodiment of the present invention is as follows: when the homeowner carrying the transmitter module opens the door, the RF module sends a signal to the single-chip microcomputer, and the single-chip microcomputer will not control the door even if it receives the signal of key insertion and door lock opening. The sound and light alarm circuit works, and the owner can open the door normally to enter the house;

When an illegal person without a transmitter module opens the door with a master key or other tools, as long as the infrared light emitted by the infrared transmission light sensor is blocked by an object, it means that an object has been inserted into the door lock, so the key insertion monitoring circuit will output a high voltage to the microcontroller. At this time, the single-chip microcomputer can judge that someone is opening the door; at the same time, if the RF module does not receive the signal from the matching transmitting module, the RF module will output a signal to the single-chip microcomputer, and the single-chip microcomputer can judge that the door is being opened. If the person who opens the door is not the owner of the house, he will control the audible and visual alarm circuit to send an audible and visual alarm to the surroundings to remind the surrounding people that this person is carrying out illegal activities; if the thief stops the theft and leaves, the audible and visual alarm stops; if The thief continues the theft and successfully unlocks the door lock. At this time, the door lock switch control circuit can detect that the door lock has been opened, and outputs a high level to the single-chip microcomputer. Then the single-chip microcomputer controls the GSM communication module to automatically send a message Send alarm information on the Internet to remind homeowners to go home in time, call the police or take other measures.

Claims (1)

1. an Intelligent alarm theftproof door lock system, it is characterized in that: described system comprises single-chip microcomputer, what be connected with single-chip microcomputer is provided with door interlock switch control circuit, key inserts observation circuit and RF module, this single-chip microcomputer also controls sound light alarming circuit and gsm communication module work, and gsm communication module is connected by wireless network with user mobile phone terminal, what match with above-mentioned RF module is provided with transmitter module, above-mentioned door interlock switch control circuit is positioned at door lock inside, when Door-lock bolt be in stretch out state time, door interlock switch control circuit is to single-chip microcomputer output low level, when Door-lock bolt is in recovery state, door interlock switch control circuit exports high level to single-chip microcomputer, above-mentioned key inserts observation circuit and comprises an infrared transmission optical sensor, this infrared transmission optical sensor is arranged on door lock inside, when not having key to insert door lock, the infrared light that infrared transmission optical sensor sends is unobstructed, key inserts observation circuit to single-chip microcomputer output low level, when key inserts door lock, the infrared light that infrared transmission optical sensor sends is blocked, key inserts observation circuit and exports high level to single-chip microcomputer.