CN211349445U

CN211349445U - Bluetooth access control circuit compatible with Wiegand protocol

Info

Publication number: CN211349445U
Application number: CN201921945352.9U
Authority: CN
Inventors: 张余款
Original assignee: Hangzhou Honyar Electrical Co Ltd; Putian Intelligent Lighting Institute Co Ltd
Current assignee: Hangzhou Honyar Electrical Co Ltd; Putian Intelligent Lighting Institute Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-08-25
Anticipated expiration: 2029-11-12

Abstract

The embodiment of the application provides a Bluetooth access control circuit compatible with a Wiegand protocol, which comprises a Bluetooth processing module, wherein the input end of the Bluetooth processing module is electrically connected with a Wiegand input interface, the output end of the Bluetooth processing module is electrically connected with the Wiegand output interface through the first input end of an AND gate circuit, and the Wiegand input interface is electrically connected with the Wiegand input interface through the second input end of the AND gate circuit; the Wiegand input interface is electrically connected with an external Wiegand communication initiating end, and the Wiegand output interface is electrically connected with an external Wiegand communication receiving end; the Bluetooth module is connected with the Bluetooth module through a power supply. The Wiegand protocol and the Bluetooth protocol are compatible by the Wiegand input interface and the Bluetooth processing module, and the Bluetooth entrance guard and the entrance guard of the Wiegand protocol do not need to be installed independently, so that the workload of entrance guard installation can be reduced.

Description

Bluetooth access control circuit compatible with Wiegand protocol

Technical Field

The utility model belongs to entrance guard's management and control field especially relates to bluetooth entrance guard's circuit of compatible wiegand agreement.

Background

At present, Bluetooth entrance guards on the market are opened based on a power on-off mode, but a plurality of new door locks communicate with a card reader through a Wiegand protocol at present, and the existing Bluetooth entrance guards cannot be used for opening the door locks. In addition, because the manufacturers of the access control and the card reader are numerous, the protocols of all the manufacturers have certain difference, even if the protocols are known, a card needs to be simulated to open the door, and the cards of each lock capable of opening the door are different, so that a large amount of workload is brought to installation and configuration.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming and the deficiency that exist among the prior art, the utility model provides a bluetooth entrance guard circuit of compatible wiegand agreement carries out compatibly to wiegand agreement and bluetooth agreement simultaneously with the help of wiegand input interface and bluetooth processing module, need not to carry out the independent erection to bluetooth entrance guard and the entrance guard of wiegand agreement to can reduce the work load of entrance guard installation.

Specifically, the bluetooth access control circuit compatible with wiegand protocol that this embodiment provided includes:

the input end of the Bluetooth processing module is electrically connected with a Wiegand input interface, the output end of the Bluetooth processing module is electrically connected with the Wiegand output interface through the first input end of the AND gate circuit, and the Wiegand input interface is electrically connected with the Wiegand input interface through the second input end of the AND gate circuit;

the Wiegand input interface is electrically connected with an external Wiegand communication initiating end, and the Wiegand output interface is electrically connected with an external Wiegand communication receiving end;

the Bluetooth module is connected with the Bluetooth module through a power supply.

Optionally, in the bluetooth access control circuit:

the Bluetooth processing module is used for receiving a door opening request sent by the wireless communication equipment.

Optionally, in the bluetooth access control circuit:

and after receiving a door opening request sent by the wireless communication equipment, the Bluetooth processing module outputs a low level to the AND gate circuit, and the AND gate circuit outputs the low level to the Wiegand output interface.

Optionally, in the bluetooth access control circuit:

and after the Wiegand input interface receives a door opening request transmitted by an external Wiegand communication initiating terminal, the low level is output to the AND gate circuit, and the AND gate circuit outputs the low level to the Wiegand output interface.

Optionally, a Flash storage area for storing a door opening request transmitted by the wiegand input interface is arranged in the bluetooth processing module.

The utility model provides a beneficial effect that technical scheme brought is:

the Wiegand protocol and the Bluetooth protocol are compatible by the Wiegand input interface and the Bluetooth processing module, and the Bluetooth entrance guard and the entrance guard of the Wiegand protocol do not need to be installed independently, so that the workload of entrance guard installation can be reduced. On the other hand, by means of the added AND gate circuit, the communication interference between the Wiegand protocol and the Bluetooth protocol can be avoided, and two door opening modes can be normally implemented.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bluetooth access control circuit compatible with the wiegand protocol according to this embodiment.

Detailed Description

In order to make the structure and advantages of the present invention clearer, the structure of the present invention will be further described with reference to the accompanying drawings.

Example one

As shown in fig. 1, the bluetooth access control circuit compatible with the wiegand protocol provided in this embodiment includes a bluetooth processing module capable of receiving a door opening request sent by a mobile phone or other wireless communication devices via the bluetooth protocol, and a power converter for supplying power to the bluetooth processing module.

In order to realize the availability of a wiegand protocol in an entrance guard, in the bluetooth entrance guard circuit provided by the embodiment of the application, a wiegand input interface and a wiegand output interface are added on an existing bluetooth processing module, specifically, the input end of the bluetooth processing module is electrically connected with the wiegand input interface, the output end of the bluetooth processing module is electrically connected with the wiegand output interface through the first input end of an and gate circuit, and the wiegand input interface is electrically connected with the wiegand input interface through the second input end of the and gate circuit; the Wiegand input interface is electrically connected with an external Wiegand communication initiating terminal (such as a card reader), and the Wiegand output interface is electrically connected with an external Wiegand communication receiving terminal (such as an access controller), so that a user can simultaneously use a Bluetooth protocol and a door opening medium based on the Wiegand protocol to realize door opening operation.

Based on above-mentioned structure, the bluetooth entrance guard circuit that this embodiment provided can support two kinds of modes of opening the door:

1) an application program installed in the wireless communication equipment performs Bluetooth connection to send a door opening signal, a Bluetooth processing module reads built-in Wiegand communication data after receiving the signal, and the Wiegand communication data is sent to a Wiegand communication receiving end of an original access control system through a Wiegand output interface, so that the door opening is successful.

2) When a user opens the door by using the original mode, the Wiegand signal is output to the Wiegand output interface through the Wiegand input interface and the AND gate circuit.

It is worth noting that the disadvantage of being compatible with multiple communication protocols is that mutual interference may occur, and in order to avoid interference between the two protocols, in the bluetooth access control circuit provided in the embodiment of the present application, an and gate circuit is additionally provided between the bluetooth processing module, the wiegand input interface and the wiegand output interface.

The AND gate (AND gate) serves as a basic logic gate for performing an AND operation. There are multiple inputs, one output. The output is high when all inputs are high (logic 1) at the same time, and low (logic 0) otherwise.

In bluetooth entrance guard's circuit:

Based on the above description of the level change, if no request based on the wiegand communication protocol occurs at present, the high level is continuously output from the signal line connected to the and gate circuit, so that both signals pass through the and gate or the high level when neither signal is communicated. When any one signal is communicated, a low-level effective signal is output through the AND gate. Considering that an extreme condition that two modes are triggered simultaneously may occur, once the entrance guard is opened, people can pass through, so that the simultaneous use of the entrance guard system is not influenced.

The bluetooth processing module used here is a QN902X chip of NXP, which integrates microprocessor and bluetooth functions. QN902x is a low power, high performance and high integration bluetooth 4.0 low energy solution from NXP, suitable for bluetooth smart applications such as sports/healthcare, human interface devices and smart accessories supporting applications. It is particularly suitable for wearable electronics and can operate on small capacity batteries such as button cells. QN902x integrates a BLE radio, controller, protocol stack and configuration software on a single chip, allowing flexible and simple use of BLE SoC solutions. In addition, the system also comprises a high-performance MCU and an on-chip memory, and supports users to develop a single-chip wireless MCU solution.

Other system features include fully integrated dc/dc and LDO, low power sleep timers, battery monitors, temperature sensors, general purpose ADCs and GPIOs to further reduce overall system cost and size. The operating power range of QN902x is 2.4V to 3.6V, with very low power consumption in all modes, which can extend the useful life of the battery powered system and maintain excellent rf performance.

After going up the electricity the utility model provides a bluetooth processing module among the bluetooth entrance guard's circuit is in the data record state, uses original access control system's wiegand mode of opening the door this moment correctly once opens the door, and bluetooth processing module can take notes the complete data of wiegand communication this moment to save the Flash memory area. Therefore, on the basis of not influencing the original door opening mode, the Wiegand data generated when the door is opened in the original door opening mode is captured and stored in a Flash storage area in the microcomputer, and power-down storage is realized for door opening records.

The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. Compatible wiegand agreement's bluetooth entrance guard circuit, its characterized in that, bluetooth entrance guard circuit includes:

2. The wiegand protocol-compatible bluetooth door access circuit of claim 1, wherein in the bluetooth door access circuit:

3. The wiegand protocol-compatible bluetooth door access circuit of claim 2, wherein, in the bluetooth door access circuit:

4. The wiegand protocol-compatible bluetooth door access circuit of claim 1, wherein in the bluetooth door access circuit:

5. The Wiegand protocol-compatible Bluetooth access control circuit according to any one of claims 1-4, wherein a Flash storage area for storing a door opening request transmitted by a Wiegand input interface is arranged in the Bluetooth processing module.