CN216772495U

CN216772495U - Bluetooth BLE multi-connection short-distance-based access control system

Info

Publication number: CN216772495U
Application number: CN202220417413.XU
Authority: CN
Inventors: 曹剑斌
Original assignee: Shenzhen Ruidiyou Technology Co ltd
Current assignee: Shenzhen Ruidiyou Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-06-17
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a Bluetooth BLE multi-connection short-distance-based access control system which comprises a Bluetooth terminal, a door lock, a card reader and a Bluetooth BLE5.0 communication module, wherein the card reader comprises a microcontroller, a state display module, an alarm module and a RFID card reading module, the Bluetooth BLE5.0 communication module is respectively in communication connection with the Bluetooth terminal and the microcontroller, the Bluetooth BLE5.0 communication module can sense the Bluetooth terminal within a preset distance and transmit the information of the Bluetooth terminal to the microcontroller, and the microcontroller can judge the legality of the information of the Bluetooth terminal and whether the Bluetooth terminal moves to the outside of a door for a preset distance and is used for sending information to control the door lock to be unlocked. This access control system presets the user bluetooth terminal that has mate in the distance through microcontroller and bluetooth BLE5.0 communication module's cooperation perception, as long as this bluetooth terminal is close to the card reader, and the card reader controls the lock promptly and unblanks the operation, realizes that induction type contactless unblanks, liberates both hands, uses in a flexible way, the simple operation.

Description

Bluetooth BLE multi-connection short-distance-based access control system

Technical Field

The utility model relates to the field of door control, in particular to a Bluetooth BLE multi-connection short-distance-based door control system.

Background

At present, an access control system usually adopts two unlocking modes of an IC card and Bluetooth. The IC card is required to be close to the card reader for card swiping in the mode of unlocking the IC card, so that when a user holds heavy objects with both hands, the heavy objects are required to be put down, and then the card is taken out for unlocking operation, and the use is extremely inconvenient; and adopt the mode that the bluetooth unblanked, need click through APP and "open the door" the operation search near entrance guard's equipment's bluetooth send the instruction of opening the door after connecting and open the door the operation, can't realize liberation both hands, the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a Bluetooth BLE based multi-connection short-distance access control system, and aims to solve the technical problem that the unlocking operation of the existing access control system is inconvenient.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an access control system based on bluetooth BLE connects short distance more, includes bluetooth terminal, lock, card reader, bluetooth BLE5.0 communication module, the card reader includes microcontroller, state display module, alarm module and RFID card reading module, microcontroller with state display module alarm module reaches RFID card reading module electric connection, bluetooth BLE5.0 communication module respectively with bluetooth terminal with microcontroller communication connection, bluetooth BLE5.0 communication module can perceive the bluetooth terminal in predetermineeing the distance and with this bluetooth terminal information transfer to microcontroller, microcontroller can judge the legitimacy of bluetooth terminal information and whether bluetooth terminal moves in predetermineeing the distance and be used for sending information control lock unblanks.

Further, the Bluetooth BLE5.0 communication module adopts a model QCC5121 Bluetooth chip.

Furthermore, the card reader also comprises a distance measuring module for detecting the distance between the Bluetooth terminal and the card reader.

Further, the access control system further comprises a thermal infrared living body detection module and a camera rotatably installed on the card reader, wherein the thermal infrared living body detection module and the camera are respectively electrically connected with the microcontroller.

Further, the alarm module is a buzzer, and the buzzer is installed at the bottom end of the card reader.

Further, the state display module comprises a first state display lamp and a second state display lamp.

According to the technical scheme, compared with the prior art, the Bluetooth BLE-based multi-connection short-distance access control system comprises the Bluetooth terminal, the door lock, the card reader and the Bluetooth BLE5.0 communication module, the Bluetooth terminal is in communication connection with the card reader through the Bluetooth BLE5.0 communication module, the position of a user is determined according to the positioning capacity of the Bluetooth terminal in communication connection, the paired user Bluetooth terminals in the preset distance are sensed through the cooperation of the microcontroller and the Bluetooth BLE5.0 communication module, and the card reader controls the door lock to be unlocked as long as the Bluetooth terminal approaches the card reader, so that induction type contactless unlocking is achieved, hands are liberated, the use is flexible, and the operation is simple.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of the access control system provided by the present invention.

Reference numerals:

100-an access control system; 1-a card reader; 11-a microcontroller; 12-a status display module; 13-an alarm module; 14-an RFID card reading module; 15-a ranging module; 2-a bluetooth terminal; a 3-Bluetooth BLE5.0 communication module; 4-door lock; 5-a thermal infrared biopsy module; 6-camera.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawing 1, the embodiment of the utility model discloses a Bluetooth BLE based multi-connection short-distance access control system, which comprises a Bluetooth terminal 2, a door lock 4, a card reader 1 and a Bluetooth BLE5.0 communication module 3, wherein the Bluetooth terminal 2 is in communication connection with the card reader 1 through the Bluetooth BLE5.0 communication module 3. The card reader 1 includes a microcontroller 11, a status display module 12, an alarm module 13, an RFID card reading module 14, and a 12V power interface (not shown), where the microcontroller 11 is electrically connected to the status display module 12, the alarm module 13, and the RFID card reading module 14, respectively. The Bluetooth BLE5.0 communication module 3 can sense the Bluetooth terminal 2 within a preset distance and transmit the Bluetooth terminal information to the microcontroller 11; and the microcontroller 11 can judge the legality of the Bluetooth terminal information and whether the Bluetooth terminal 2 moves to the outside of the door for a preset distance, and can send information to control the door lock 4 to unlock. Here, confirm user's position according to the location ability when bluetooth terminal 2 communication connection, bluetooth terminal 2 that has already paired in the distance is predetermine to cooperation perception through microcontroller 11 and bluetooth BLE5.0 communication module 3, as long as this bluetooth terminal 2 is close to card reader 1, card reader 1 controls lock 4 promptly and unblanks the operation, realizes that the induction type contactless unblanks, liberates both hands, uses in a flexible way, easy operation.

In this embodiment, this access control system 100 adopts bluetooth BLE5.0 communication module 3, has anti-copy nature, high security, convenience. The method specifically comprises the following steps:

(1) authentication information (STK and LTK) of 128 bits;

(2) carrying out pairing in an OOB Authentication mode;

(3) the safety guarantee technology of reliable Bluetooth data communication;

(4) customizing the encrypted data pair;

(5) and a non-touch type, close to the automatic induction opening gate.

Here, OOB (out-of-band) authentication is adopted to perform bidirectional authentication with the bluetooth terminal 2. In the whole OOB authentication process, user intervention is not needed, the automation of distribution network authentication is realized, the user experience is improved, and the distribution network authentication efficiency is improved; in addition, different bluetooth terminals 2 correspond to different OOB information, which is beneficial to ensuring the security of the distribution network authentication process.

The Bluetooth BLE5.0 communication module 3 comprises a Bluetooth chip, the Bluetooth chip preferentially selects a highly integrated module Bluetooth chip, and the Bluetooth chip is provided with a baseband controller and a storage unit and supports data transmission of various baud rates. Preferably, a bluetooth chip of model QCC5121 may be selected.

Further, the status display module 12 includes a first status indicator lamp capable of emitting blue light and a second status display lamp capable of emitting green light. The status display module 12 uses a two-color lamp to indicate the pairing status, the unlocking status, the locking status and various abnormal statuses of the bluetooth in the access control system 100, so that the user can more intuitively obtain the current use status of the access control system 100, and unnecessary loss caused by misjudgment is avoided.

In addition, the alarm module 13 is a buzzer. The buzzer 28 is a passive electromagnetic buzzer sounding at 7.5mm by 2.5mm side, and the passive electromagnetic buzzer is arranged at the bottom end of the card reader 1 and cannot be found easily, so that the overall aesthetic property of the card reader 1 is maintained.

In one embodiment, the card reader 1 further comprises a ranging module 15. Such as radar ranging modules, laser ranging modules. This range module 15 can detect bluetooth terminal 2 and card reader 1 distance, and just can control bluetooth BLE5.0 communication module 3 when microcontroller 11 receives range module 15 and detects that the distance of bluetooth terminal 2 and card reader 1 is close to the preset distance, broadcast through the broadcast mode, and bluetooth terminal 2 acquires the broadcast signal through the scanning mode and carries out the authentication with bluetooth BLE5.0 communication module 3 and be connected, and bluetooth BLE5.0 communication module 3 and microcontroller 11 are in the dormant state at other times, reduce access control system 100's energy consumption. Here, adopt ranging module 15 to detect the distance of bluetooth terminal 2 and card reader 1, namely the distance of user to access control system 100, can realize accurate distance induction and open the door, the entrance guard auto-induction keeps the characteristic of opening, need not to set up the back of opening of entrance guard through the system and postpone, avoids entrance guard delay design unreasonable and the drawback that leads to unable normal business turn over.

Further, the access control system 100 further includes a thermal infrared living body detection module 5 and a camera 6 rotatably installed on the card reader 1, wherein the thermal infrared living body detection module 5 and the camera 6 are respectively electrically connected with the microcontroller 11. Thus, first, the thermal infrared living body detection module 5 detects whether a human body approaches the access control system 100; then, shooting and collecting human body characteristics and human body postures by the camera 6 and transmitting collected images to the microcontroller 11, extracting the human body characteristics according to the collected images by the microcontroller 11 and comparing the human body characteristics with a system preset white list to judge the legality of the user; when the user identity is legal, judging whether the human body posture is close to the card reader 1, and if so, carrying out unlocking operation; otherwise, the door opening operation is not carried out even if the Bluetooth pairing is successful within the specified distance, and the door opening accuracy is improved. And, the cooperation of hot infrared live body detection module 5 and camera 6 makes this access control system 100 have face identification's the function of unblanking, has solved the too single problem of entrance guard mode of unblanking, still guarantees that the user can accomplish entrance guard through the combination of one kind alone or multiple mode and unblank to satisfy the user to the various demand of unblanking, improved user's use and experienced.

In this embodiment, the bluetooth terminal 2 may be a smart phone of a user, and a bluetooth chip in the smart phone is directly used as the bluetooth terminal 2 of the user, so that the cost can be effectively reduced, and the familiarity of the user with the smart phone is utilized to simplify the operation process. Of course, in other embodiments, a key with a bluetooth module may be provided.

The microcontroller 11 of the access control system 100 controls the bluetooth BLE5.0 communication module 3 to broadcast at 120 ms intervals to increase the speed at which the device is searched by the mobile phone. The marked HID appearance characteristic defined by the Bluetooth SIG is used in the broadcast data, the equipment has the service and the characteristic UUID of the HID mouse, the simulated mouse equipment enables the mobile phone to be automatically connected after receiving the broadcast, and the door lock 4 is automatically opened when the mobile phone is close to the access control system 100 within a preset distance.

The premise of automatic connection is that pairing and binding of Bluetooth are required to be completed. And the mobile phone which does not carry out identity authentication directly initiates a pairing request, and the equipment refuses pairing. The pairing mode is as follows: after the APP of the product is used in the mobile phone to complete real-name authentication, close-range pairing is clicked to acquire user identity information through a background server, and encrypted user information is generated to the APP and the equipment to prepare for close-range pairing. And after the authentication is finished, sending the encrypted data to the Bluetooth peripheral equipment for decryption, and finishing the authentication of the user after the data and the identity are verified. After the user identity authentication is completed, the equipment sends out a Bluetooth pairing request and a binding request to complete the pairing of the equipment, and the automatic connection of the mobile phone is realized.

The access control system 100 supports at most 8-20 devices for connection, and if a plurality of users are near the access control system, the bluetooth is occupied, so that the mobile phones of the users needing to open the door cannot be connected with the devices. And the microcontroller 11 does not allow this event to occur. Where users who are not securely paired are disconnected by the device. If the distance between the user and the entrance guard is not reduced within 3 seconds, the user is considered to be immediately disconnected after time out, and the user can continue to approach and try to connect the device to complete distance detection.

Specifically, the door opening operation using auto-induction is: when the mobile phone is close to the equipment within 10 meters, the equipment broadcast can be received, the mobile phone can be automatically connected with the equipment according to the appearance characteristics of the Bluetooth HID, the equipment can detect the Bluetooth signal strength (RSSI) after connection is completed, and the distance between the mobile phone and the equipment is judged according to the signal strength. When the distance between the mobile phone and the equipment is less than 2 meters, whether the mobile phone completes safe pairing and binding is checked, the validity period of the user is checked, and if the equipment does not use safe pairing and binding or the identity information is expired, the Bluetooth connection of the mobile phone is immediately disconnected. If the identity information is confirmed, the microcontroller 11 controls the buzzer to prompt for one sound, then the green state display lamp flickers once, and the door lock 4 is opened, so that the induction type non-contact unlocking is realized, the hands are liberated, the use is flexible, and the operation is convenient.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an access control system based on bluetooth BLE connects short distance more, its characterized in that, includes bluetooth terminal, lock, card reader, bluetooth BLE5.0 communication module, the card reader includes microcontroller, state display module, alarm module and RFID card reading module, microcontroller with state display module alarm module reaches RFID card reading module electric connection, bluetooth BLE5.0 communication module respectively with bluetooth terminal with microcontroller communication connection, bluetooth BLE5.0 communication module can perceive the bluetooth terminal in predetermineeing the distance and with this bluetooth terminal information transfer to microcontroller, microcontroller can judge whether the legitimacy of bluetooth terminal information and bluetooth terminal move to predetermineeing the distance in and be used for sending information control lock and unblank.

2. The access control system of claim 1, wherein the Bluetooth BLE5.0 communication module is a model QCC5121 Bluetooth chip.

3. The door access system of claim 1, wherein the card reader further comprises a ranging module for detecting a distance between a bluetooth terminal and the card reader.

4. The door control system according to claim 3, further comprising a thermal infrared biopsy module and a camera rotatably mounted on a card reader, wherein the thermal infrared biopsy module and the camera are electrically connected to the microcontroller respectively.

5. The access control system of claim 1, wherein the alarm module is a buzzer, and the buzzer is mounted at the bottom end of the card reader.

6. The door access system of claim 1, wherein the status display module comprises a first status display light and a second status display light.