CN211923842U - Bluetooth electronic door lock device based on single chip microcomputer control - Google Patents

Abstract

The utility model discloses a bluetooth electronic door lock device controlled by a single-chip microcomputer. An electric telescopic rod is arranged inside the door body, the telescopic end of the electric telescopic rod is provided with one end of a door latch, and the side wall of the door body is provided with an electric telescopic rod. The part located at the door latch is provided with an opening, and the position corresponding to the door frame and the door latch is provided with a locking block, an electromagnet is sleeved on the outer side of the locking block, and the electronic door lock control system is arranged in the door body. After receiving a legal unlocking or locking command, the single-chip microcomputer controls the electric telescopic rod drive module to extend or retract the telescopic end of the electric telescopic rod, thereby driving the door latch to complete the unlocking and locking actions. When the door latch is inserted into the spring cavity of the locking block, The steel ball in the spring cavity can slide to the position of the annular groove on the door latch, and the annular baffle on one side of the steel ball can firmly clamp the steel ball in the annular groove under the pressure of the elastic member to achieve Therefore, the effect of not being able to directly pull out the door latch from the locking block has a better anti-theft effect.

Description

A Bluetooth electronic door lock device based on single chip control

technical field

The utility model relates to the technical field of smart home, in particular to a bluetooth electronic door lock device controlled by a single-chip microcomputer.

Background technique

Door locks are one of the most common things in human daily life. With the development of society, modern tools can be easily installed on mechanical door locks, drill small holes and then use steel wire rolling handles to open the door, so traditional mechanical door locks can no longer meet people's requirements for the safety of property; people There are many door locks in daily life. If they are all mechanical door locks, you need to carry a large series of keys. If the keys are lost or stolen, you need to replace the door locks. The complicated operation brings inconvenience to people's lives. . Therefore, it is particularly important to design an electronic door lock that is used to ensure the safety of people's lives and property and facilitate people's lives. To this end, we propose a Bluetooth electronic door lock device based on single-chip control.

Utility model content

The purpose of the present utility model is to provide a Bluetooth electronic door lock device controlled by a single-chip microcomputer, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a Bluetooth electronic door lock device controlled by a single-chip microcomputer, comprising a door body, a door frame, an electronic door lock control system and a mobile phone Bluetooth, and the interior of the door body is provided with an electric telescopic device. Rod, the telescopic end of the electric telescopic rod is provided with one end of the latch, the side wall of the door body is provided with an opening at the part of the latch, the door frame is provided with a locking block at the position corresponding to the latch, and the locking block is provided with an opening. There is a spring cavity, the inner side of the spring cavity is provided with an elastic piece, one end of the elastic piece close to the door body is provided with an annular baffle, the other end of the latch is inserted into the spring cavity, and the latch passes through the annular baffle and the elastic A steel ball is provided between the annular baffle plate and the side wall of the spring cavity close to the door body, the side wall of the door latch is provided with an annular groove for use with the steel ball, and the outer side of the locking block is sleeved With an electromagnet, when the latch is inserted into the spring cavity of the locking block, the steel ball in the spring cavity can slide to the position of the annular groove on the latch, and the annular baffle on one side of the steel ball is under the pressure of the elastic piece, The steel ball can be firmly stuck in the annular groove, and the effect of not being able to directly pull out the door latch from the locking block is achieved, which has a better anti-theft effect. The baffle plate and the elastic piece compressed by the steel ball are attracted by the strong magnetic force and move to the inside of the locking block, so that the door latch can leave the locking block under the driving of the electric telescopic rod to complete the unlocking. The electronic door lock control system is set in the door body, The electronic door lock control system includes a single-chip microcomputer, a bluetooth serial port module, an electric telescopic rod drive module, a buzzer, an LED light and a Hall switch. The single-chip microcomputer encrypts or decrypts the data transmitted by the bluetooth serial port module. After a legal unlocking or locking command, the single-chip microcomputer controls the electric telescopic rod drive module to extend or retract the telescopic end of the electric telescopic rod, thereby driving the door latch to complete the unlocking and locking actions. The Bluetooth serial port module is respectively connected to the single-chip microcomputer and the mobile phone Bluetooth, so The Hall switch is connected with the input end of the single-chip microcomputer, the LED light, the buzzer, the electromagnet and the electric telescopic rod driving module are connected with the output end of the single-chip microcomputer, and the electric telescopic rod driving module is connected with the input of the electric telescopic rod When the terminals are connected, when the Hall switch detects that the door is not closed, it will output a high-level signal to the single-chip microcomputer, and the single-chip microcomputer controls the buzzer to issue an alarm prompt, and makes the LED light flash to realize the alarm function and enhance the safety of the door lock. sex, improve the convenience of life.

Preferably, a backup power supply is provided inside the door body, and the backup power supply is electrically connected to the single-chip microcomputer. Charge the backup power supply, and when the external power supply cannot supply power to the device due to an accident, the device is powered by the backup power supply to prevent the door from being unable to be opened due to the fact that the latch cannot be pulled out from the locking block when there is no power connection due to an accident.

Preferably, the model of the single-chip microcomputer is STC89C52.

Preferably, the locking block is made of a material that cannot be attracted by a magnet, so as not to affect the retraction of the door latch.

Preferably, the Bluetooth serial port module is version 4.0, which can support a wider range of compatible mobile phones.

Compared with the prior art, the beneficial effect of the utility model is: a bluetooth electronic door lock device controlled by a single chip microcomputer, after receiving a legal unlocking or locking command, the single chip microcomputer controls the electric telescopic rod driving module to make the electric telescopic rod move. The telescopic end extends or retracts, thereby driving the latch to complete the unlocking and locking actions. When the latch is inserted into the spring cavity of the locking block, the steel ball in the spring cavity can slide to the position of the annular groove on the latch, and the side of the steel ball Under the pressure of the elastic member, the annular baffle can firmly clamp the steel ball in the annular groove, so as to achieve the effect that the door latch cannot be directly pulled out from the locking block, which has a better anti-theft effect. When the unlocking action is performed, the electromagnet is activated by the single-chip microcomputer, and the ring-shaped baffle plate and the elastic member compressed by the steel ball are attracted by the strong magnetic force and move to the inside of the locking block, so that the door latch can be driven by the electric telescopic rod to leave the locking block and complete the unlocking.

Description of drawings

Fig. 1 is the system block diagram of the electronic door lock control system of the present invention;

Fig. 2 is the sectional structure schematic diagram of the door body and the door frame of the utility model;

FIG. 3 is a schematic cross-sectional view of the locking block of the present invention.

In the picture: 1-door body, 2-door frame, 3-electric telescopic rod, 4-door latch, 5-lock block, 6-spring cavity, 7-elastic piece, 8-ring baffle, 9-steel ball, 10- Ring groove, 11 - electromagnet.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, the present utility model provides a technical solution: a Bluetooth electronic door lock device controlled by a single-chip microcomputer, comprising a door body 1, a door frame 2, an electronic door lock control system and a mobile phone Bluetooth, the door body 1 There is an electric telescopic rod 3 inside, the telescopic end of the electric telescopic rod 3 is provided with one end of the latch 4, the side wall of the door body 1 is provided with an opening at the part of the latch 4, and the door frame 2 corresponds to the latch 4 A locking block 5 is provided at the position of the door, a spring cavity 6 is provided in the locking block 5, an elastic member 7 is provided on the inner side of the spring cavity 6, and an annular baffle 8 is provided at one end of the elastic member 7 close to the door body 1 , the other end of the latch 4 is inserted into the spring cavity 6, and the latch 4 passes through the annular baffle 8 and the elastic member 7 in turn, between the annular baffle 8 and the side wall of the spring cavity 6 on the side close to the door body 1 A steel ball 9 is provided, the side wall of the door latch 4 is provided with an annular groove 10 for use with the steel ball 9, and an electromagnet 11 is sleeved on the outer side of the locking block 5. When the door latch 4 is inserted into the spring cavity of the locking block 5 6, the steel ball 9 in the spring cavity 6 can slide to the position of the annular groove 10 on the latch 4, and the annular baffle 8 on the side of the steel ball 9 can be firmly pressed by the elastic member 7. The steel ball 9 is stuck in the annular groove 10, so that it is impossible to directly pull out the door latch 4 from the locking block 5, which has a better anti-theft effect. The elastic member 7 compressed by the annular baffle 8 and the steel ball 9 is attracted by the strong magnetic force and moves to the inside of the locking block 5, so that the latch 4 can leave the locking block 5 under the driving of the electric telescopic rod 3, and the unlocking is completed. The lock control system is arranged in the door body 1, and the electronic door lock control system includes a single-chip microcomputer, a bluetooth serial port module, an electric telescopic rod drive module, a buzzer, an LED light and a hall switch integrated and formed, and the single-chip microcomputer transmits the bluetooth serial port module transmission. After receiving the legal unlocking or locking command, the single-chip microcomputer controls the electric telescopic rod drive module to extend or retract the telescopic end of the electric telescopic rod 3, thereby driving the door latch 4 to complete the unlocking and locking actions, so the The bluetooth serial port module is respectively connected to the single-chip microcomputer and the mobile phone Bluetooth, the hall switch is connected to the input end of the single-chip microcomputer, the LED light, the buzzer, the electromagnet 11 and the electric telescopic rod driving module are connected to the output end of the single-chip microcomputer, The electric telescopic rod drive module is connected to the input end of the electric telescopic rod 3. When the Hall switch detects that the door is not closed properly, it will output a high-level signal to the single-chip microcomputer. The LED light flashes to realize the alarm function, which enhances the security of the door lock and improves the convenience of life.

Specifically, the door body 1 is internally provided with a backup power supply, and the backup power supply is electrically connected to the single-chip microcomputer. When the external power supply fails to supply power to the device due to an accident, the device can be powered by the standby power supply to prevent the door latch 4 from being unable to be pulled out from the locking block 5 when there is no power supply due to an accident. Happening.

Specifically, the model of the microcontroller is STC89C52.

Specifically, the locking block 5 is made of a material that cannot be attracted by a magnet, and does not affect the retraction of the door latch 4 .

Specifically, the Bluetooth serial port module is version 4.0, which can support a wider range of compatible mobile phones.

Working principle: when the utility model is used, the data transmitted by the bluetooth serial port module is encrypted or decrypted by the single-chip microcomputer. After receiving a legal unlocking or locking command, the single-chip microcomputer controls the electric telescopic rod drive module to extend the telescopic end of the electric telescopic rod 3. When the latch 4 is inserted into the spring cavity 6 of the locking block 5, the steel ball 9 in the spring cavity 6 can slide to the position of the annular groove 10 on the latch 4. , and the annular baffle 8 on the side of the steel ball 9 can firmly clamp the steel ball 9 in the annular groove 10 under the pressure of the elastic member 7, so that the door latch 4 cannot be directly pulled out from the locking block 5. When the door latch 4 is unlocked, the electromagnet 11 is activated by the single-chip microcomputer, and the annular baffle 8 and the steel ball 9 are attracted by the strong magnetic force and the compressed elastic member 7 moves to the inner side of the locking block 5, Therefore, the door latch 4 can leave the locking block 5 driven by the electric telescopic rod 3 to complete the unlocking; when the Hall switch detects that the door is not closed properly, it will output a high-level signal to the microcontroller, and the microcontroller will control the buzzer to issue an alarm prompt. , and let the LED light flash to realize the alarm function, enhance the security of the door lock, improve the convenience of life, and can charge the backup power supply when the external power supply is normally supplied, and when the external power supply fails to supply power to the device due to accidents , to supply power to the device through the backup power supply, to prevent the situation that the door cannot be opened due to the fact that the door latch 4 cannot be pulled out from the locking block 5 when there is no power connection due to unexpected circumstances.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. a bluetooth electronic door lock device based on single chip control, comprising door body (1), door frame (2), electronic door lock control system and mobile phone bluetooth, it is characterized in that: the interior of described door body (1) is provided with An electric telescopic rod (3), the telescopic end of the electric telescopic rod (3) is provided with one end of the latch (4), the side wall of the door body (1) is provided with an opening at the part of the latch (4), the A locking block (5) is provided at a position corresponding to the door frame (2) and the door latch (4), a spring cavity (6) is provided in the locking block (5), and an elastic member (6) is provided on the inner side of the spring cavity (6). 7), the elastic member (7) is provided with an annular baffle plate (8) at one end close to the door body (1), the other end of the door latch (4) is inserted into the spring cavity (6), and the door latch (4) passes through in sequence An annular baffle (8) and an elastic member (7), a steel ball (9) is provided between the annular baffle (8) and the side wall of the spring cavity (6) on the side close to the door body (1), so The side wall of the door latch (4) is provided with an annular groove (10) used in cooperation with the steel ball (9), the outer side of the locking block (5) is sleeved with an electromagnet (11), and the electronic door lock controls The system is arranged in the door body (1), and the electronic door lock control system includes a single-chip microcomputer, a bluetooth serial port module, an electric telescopic rod drive module, a buzzer, an LED light and a Hall switch. The bluetooth serial port modules are respectively connected to The single-chip microcomputer and the Bluetooth of the mobile phone, the Hall switch is connected to the input end of the single-chip microcomputer, the LED light, the buzzer, the electromagnet (11) and the electric telescopic rod drive module are connected to the output end of the single-chip microcomputer, and the electric telescopic The rod driving module is connected with the input end of the electric telescopic rod (3). 2 . The Bluetooth electronic door lock device based on single-chip microcomputer control according to claim 1 , wherein the door body (1) is internally provided with a backup power supply, and the backup power supply is electrically connected to the single-chip microcomputer. 3 . 3. A Bluetooth electronic door lock device based on single-chip control according to claim 1, wherein the model of the single-chip microcomputer is STC89C52. 4. A Bluetooth electronic door lock device based on single-chip control according to claim 1, characterized in that: the locking block (5) is made of a material that cannot be attracted by a magnet. 5 . The Bluetooth electronic door lock device based on single-chip control according to claim 1 , wherein the Bluetooth serial port module is version 4.0. 6 .

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