CN209149409U - RFID card lock - Google Patents

Abstract

The utility model discloses a kind of RFID card lock.RFID card lock includes Wi-Fi module, RFID reader, microcontroller, memory module and electromagnetic lock；Wi-Fi module is delivered to microcontroller by Wi-Fi module for connecting with cell phone application, by the encrypted message that cell phone application exports；RFID reader includes antenna, radio-frequency module and module for reading and writing；Microcontroller is connect with Wi-Fi module, RFID reader, memory module and electromagnetic lock respectively, memory module is used to store the encrypted message unlocked and RFID card information, microcontroller be used to judge input password or RFID card information whether with the information matches that are stored in memory module, pass through control electromagnetic lock realization unlocking operation after successful match.RFID card lock can increase unlocking approach, improve convenience degree by RFID card or unlocked by mobile telephone.

Description

RFID card lock

Technical field

The utility model relates to control technology field, specifically a kind of RFID card lock for being mainly used for managing vehicle pass-through.

Background technique

RFID technique, also known as radio frequency identification or radio frequency identification are a kind of communication technologys, can be known by radio signals Other specific objective simultaneously reads and writes related data, without establishing mechanical or optical contact between identifying system and specific objective.Wirelessly The signal of electricity is the electromagnetic field by being tuned into radio frequency, and data are sent out from the label being attached on article, with Automatic identification and the tracking article.Certain labels can be obtained by energy from the electromagnetic field that identifier issues in identification, and Battery is not needed；Also there is label itself to possess power supply, and can actively issue radio wave and (be tuned into the electromagnetism of radio frequency ).Label contains the information of Electronic saving, can identify within several meters.Unlike bar code, RF tag is not required to It is within identifier sight, can also be embedded in and be tracked within object.RFID technique can recognize high-speed moving object and can Identify multiple labels simultaneously, it is swift and convenient to operate.Therefore, this technology production RFID card is mostly used to enter greatly in access control system big Door.Currently, common RFID card lock system is divided into card and lock two parts mostly, it is difficult to unlock if after RFID card loss, Bring various troubles.Therefore, user and technical staff thirst for improving this.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of RFID card locks, can be opened by RFID card or mobile phone Lock, increases unlocking approach, improves convenience degree.

In order to solve the above technical problems, the utility model uses following technical scheme:

A kind of RFID card lock, including Wi-Fi module, RFID reader, microcontroller, memory module and electromagnetic lock, institute Wi-Fi module is stated for connecting with cell phone application, microcontroller is delivered to by Wi-Fi module by the encrypted message that cell phone application exports Device；The RFID reader includes antenna, radio-frequency module and module for reading and writing, antenna radio-frequency carrier signal for transmitting and receiving, Radio-frequency module emits the signal by antenna after radio-frequency carrier signal for generating and amplifying, and radio-frequency module is also used to connect on antenna That receives is transmitted to module for reading and writing after the transmitting of the RFID card of unlocking or the demodulation of reflected radio-frequency carrier signal, and module for reading and writing is used In receiving and obtaining RFID card information after decoding the signal of radio-frequency module transmission, module for reading and writing is also used to for RFID card information being transmitted to Microcontroller；The microcontroller is connect with Wi-Fi module, RFID reader, memory module and electromagnetic lock respectively, stores mould Block is used to store the encrypted message unlocked and RFID card information, and microcontroller is used to judge the password of input or RFID card information is It is no with the information matches that are stored in memory module, unlocking operation is realized by control electromagnetic lock after successful match.

As a further improvement of the above technical scheme:

The radio-frequency module includes radio-frequency oscillator, rf processor and radio frequency receiver；What radio-frequency oscillator generated penetrates Frequency carrier signal amplified by rf processor after by antenna emit, radio frequency receiver be used for receive by antenna send by RFID card transmitting or reflected radio-frequency carrier signal, radio-frequency module are transmitted to reading after demodulating the radio-frequency carrier signal received Writing module.

The module for reading and writing includes that amplifier, decoding and error correction circuit, microprocessor, clock circuit, memory, I/O connect Mouth and power supply, microprocessor are separately connected decoding and error correction circuit, clock circuit, memory and I/O interface, the radio frequency mould The signal that block sends over successively by amplifier, decoding and correction module processing after storage into memory, I/O interface with it is micro- Controller connection.

In addition, RFID card lock is additionally provided with the keyboard input module connecting with microcontroller, keyboard input module is used for Input encrypted message.And RFID card lock is additionally provided with for powering and the power module of storing electrical energy.And the RFID Clamping lock is additionally provided with the display module connecting with microcontroller, and display module is used to show the encrypted message or RFID card letter of input Whether breath matches.

Preferably, the Wi-Fi module uses ESP8266 module, and the microcontroller uses STC12C5A60S2 monolithic Machine, the memory module use AT24C08 memory.

The beneficial effects of the utility model are: the utility model RFID card lock can be unlocked by cell phone application and RFID card, Unlocking cipher can also be inputted by keyboard, effectively increase the mode of unlocking, improve the convenience degree of unlocking.

Detailed description of the invention

Fig. 1 is the connection schematic diagram of the preferred embodiment in the utility model.

Figure label are as follows: 1, Wi-Fi module；2, RFID reader；21, antenna；22, radio-frequency module；23, module for reading and writing； 3, keyboard input module；4, microcontroller；5, power module；6, memory module；7, electromagnetic lock；8, display module.

Specific embodiment

The utility model is illustrated with reference to the accompanying drawing, the specific embodiments described herein be merely to illustrate and It explains the utility model, is not used to limit the utility model, under the premise of not departing from the spirit of the design of the utility model, ability The various changes and improvements that domain those of ordinary skill makes the technical solution of the utility model should all fall into the utility model In protection scope.

As shown in Figure 1, the RFID card of the present embodiment is locked, including Wi-Fi module 1, RFID reader 2, microcontroller 4, deposit Module 6 and electromagnetic lock 7 are stored up, Wi-Fi module 1 passes through Wi- for connecting with cell phone application, by the encrypted message that cell phone application exports Fi module 1 is delivered to microcontroller 4；RFID reader 2 includes antenna 21, radio-frequency module 22 and module for reading and writing 23, and antenna 21 is used In emitting and receiving radio-frequency carrier signal, radio-frequency module 22 is emitted after being used to generate and amplify radio-frequency carrier signal by antenna 21 The signal, radio-frequency module 22 are also used to antenna 21 is received from the transmitting of the RFID card of unlocking or reflected radio-frequency carrier Module for reading and writing 23 is transmitted to after signal demodulation, module for reading and writing 23 obtains after being used to receive and decode the signal of the transmission of radio-frequency module 22 RFID card information, module for reading and writing 23 are also used to RFID card information being transmitted to microcontroller 4；Microcontroller 4 respectively with Wi-Fi module 1, RFID reader 2, memory module 6 and electromagnetic lock 7 connect, and memory module 6 is used to store the encrypted message and RFID unlocked Card information, the password or RFID card information that microcontroller 4 is used to judge to input whether with the information that is stored in memory module 6 Match, unlocking operation is realized by control electromagnetic lock 7 after successful match.

Wherein, the radio-frequency module 22 includes radio-frequency oscillator, rf processor and radio frequency receiver；Radio-frequency oscillator produces Raw radio-frequency carrier signal is emitted after being amplified by rf processor by antenna 21, and radio frequency receiver is passed for receiving by antenna 21 Bring by RFID card transmitting or reflected radio-frequency carrier signal, the radio-frequency carrier signal that radio-frequency module 22 will receive Module for reading and writing 23 is transmitted to after demodulation.The module for reading and writing 23 includes amplifier, decoding and error correction circuit, microprocessor, clock electricity Road, memory, I/O interface and power supply, microprocessor are separately connected decoding and error correction circuit, clock circuit, memory and I/O Interface, successively memory is arrived in storage to the signal that radio-frequency module 22 sends over after the processing of amplifier, decoding and correction module In, I/O interface is connect with microcontroller 4.

In addition, RFID card lock is additionally provided with keyboard input module 3, power module 5 and display module 8.Keyboard inputs mould Block 3 is connect with microcontroller 4, for inputting encrypted message.Power module 5 is powered for storing electrical energy and for whole device, and one As use lithium battery.Display module 8 is used to show whether the encrypted message of input or RFID card information match, generally using liquid crystal Display screen.The Wi-Fi module uses 1ESP8266 module, and microcontroller 4 uses STC12C5A60S2 single-chip microcontroller, memory module 6 use AT24C08 memory.

Claims (7)

1.RFID clamping lock, including Wi-Fi module (1), RFID reader (2), microcontroller (4), memory module (6) and electromagnetism It locks (7), it is characterised in that: the Wi-Fi module (1) is led to for connecting with cell phone application by the encrypted message that cell phone application exports It crosses Wi-Fi module (1) and is delivered to microcontroller (4)；The RFID reader (2) include antenna (21), radio-frequency module (22) and Module for reading and writing (23), antenna (21) radio-frequency carrier signal for transmitting and receiving, radio-frequency module (22) is for generating and amplification is penetrated Emit the signal by antenna (21) after frequency carrier signal, radio-frequency module (22) is also used to antenna (21) is received from use of unlocking RFID card transmitting or the demodulation of reflected radio-frequency carrier signal after be transmitted to module for reading and writing (23), module for reading and writing (23) is for connecing It receives and obtains RFID card information after decoding the signal that radio-frequency module (22) are transmitted, module for reading and writing (23) is also used to RFID card information It is transmitted to microcontroller (4)；The microcontroller (4) respectively with Wi-Fi module (1), RFID reader (2), memory module (6) with And electromagnetic lock (7) connection, memory module (6) is used to store the encrypted message unlocked and RFID card information, microcontroller (4) are used for Judge input password or RFID card information whether with the information matches that are stored in memory module (6), pass through after successful match It controls electromagnetic lock (7) and realizes unlocking operation.

2. RFID card according to claim 1 lock, it is characterised in that: the radio-frequency module (22) include radio-frequency oscillator, Rf processor and radio frequency receiver；The radio-frequency carrier signal that radio-frequency oscillator generates passes through antenna after being amplified by rf processor (21) emit, radio frequency receiver, which is used to receive, to be carried by what antenna (21) was sent by RFID card transmitting or reflected radio frequency Wave signal, radio-frequency module (22) are transmitted to module for reading and writing (23) after demodulating the radio-frequency carrier signal received.

3. RFID card lock according to claim 1, it is characterised in that: the module for reading and writing (23) includes amplifier, decoding And error correction circuit, microprocessor, clock circuit, memory, I/O interface and power supply, microprocessor are separately connected decoding and entangle Wrong circuit, clock circuit, memory and I/O interface, the signal that the radio-frequency module (22) sends over successively pass through amplifier, Into memory, I/O interface is connect with microcontroller (4) for storage after decoding and correction module processing.

4. RFID card lock according to claim 1, it is characterised in that: RFID card lock is additionally provided with and microcontroller (4) The keyboard input module (3) of connection, keyboard input module (3) is for inputting encrypted message.

5. RFID card lock according to claim 1, it is characterised in that: RFID card lock is additionally provided with for powering and saving The power module (5) of electric energy.

6. RFID card lock according to claim 1, it is characterised in that: RFID card lock is additionally provided with and microcontroller (4) The display module (8) of connection, display module (8) are used to show whether the encrypted message of input or RFID card information match.

7. RFID card lock according to claim 1, it is characterised in that: the Wi-Fi module (1) uses ESP8266 module, The microcontroller (4) uses STC12C5A60S2 single-chip microcontroller, and the memory module (6) uses AT24C08 memory.