Anti-theft door lock

Abstract

The utility model discloses an anti-theft door lock which comprises a lock body, a main control board is arranged in the lock body, a control unit and a power management unit are arranged on the main control board, and the power management unit comprises a charging module, a battery module, an electric quantity acquisition module and an interface. The control unit is electrically connected with the battery module, the electric quantity acquisition module, the wireless communication 4G module, the NFC radio frequency matching module, the emergency power supply module, the anti-disassembly detection module, the doorbell module and the driving module, the interface is electrically connected with the battery module and the charging module, and the battery module is electrically connected with the charging module and the electric quantity acquisition module. According to the intelligent door lock, the safety of the door lock is enhanced through the NFC radio frequency matching module, the personal safety guarantee of a user is greatly improved, meanwhile, the card swiping recognition rate can be improved, replacement and maintenance are convenient, the use cost can be reduced, and the intelligent door lock has wide application prospects and is beneficial to application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, in particular to an anti-theft door lock. Background Art

[0002] With the rapid development of society and rising awareness of safety, door locks, as a crucial safeguard for homes and businesses, are receiving increasing attention. However, existing door locks offer insufficient privacy protection. While NFC technology offers high security, its close-range communication characteristics pose a risk of privacy leakage. For example, information on NFC tags can be easily read through physical contact, potentially raising privacy concerns. Furthermore, malicious users or hackers could exploit NFC vulnerabilities to steal users' personal information or bank card details by forging NFC tags or using malicious NFC devices. Therefore, there is an urgent need to develop anti-theft door locks that address these technical issues.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-theft door lock, which enhances the security of the door lock through the NFC radio frequency matching module, greatly improves the user's personal safety, and at the same time can improve the card swiping recognition rate, and is easy to replace and repair, which is conducive to reducing the cost of use. It has broad application prospects and is conducive to popularization and application.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an anti-theft door lock, including a lock body, a main control board is provided inside the lock body, a control unit is provided on the main control board, the control unit is electrically connected to the NFC radio frequency matching module, and the circuit structure of the NFC radio frequency matching module is as follows: RX and VMID are connected in parallel with resistor R14, the upper end of resistor R14 is connected to resistor R12, resistor R12 is connected in series with capacitor C11, the negative electrode of capacitor C11 is connected to the negative electrode of capacitor C27, the lower end of resistor R14 is connected to the positive electrode of capacitor C14, and the negative electrode of capacitor C14 is connected to the internal GN D, TX1 and TX2 are respectively connected in series with inductors L1 and L3. The lower end of inductor L1 is connected to capacitors C17 and C16. Capacitor C16 is connected in series with resistor R16 and connected to the induction coil. Capacitor C16 and capacitor C17 are connected in parallel, capacitor C23 and capacitor C17 are connected in series with the lower end of inductor L3, and the lower end of inductor L3 is connected to capacitor C27. Capacitor C18 and capacitor C24 are connected in series, capacitor C19 and capacitor C25 are connected in series, and capacitor C20 is connected in parallel. The positive pole is connected to resistor R16, and the negative pole is connected to resistor R17. The other ends of resistors R16 and R17 are connected to the antenna coil.

[0006] Preferably, a power management unit is also provided on the main control board, and the power management unit includes a charging module, a battery module, a power collection module and an interface. The control unit is electrically connected to the battery module, the power collection module, the wireless communication 4G module, the emergency power supply module, the anti-dismantling detection module, the doorbell module and the drive module respectively. The interface is electrically connected to the battery module and the charging module respectively. The battery module is electrically connected to the charging module and the power collection module respectively. The wireless communication 4G module is wirelessly connected to the server.

[0007] Preferably, the resistor R12 is 5.1K, the resistor R14 is 820R, the resistor R16 is 0R, and the resistor R17 is 0R.

[0008] Preferably, the capacitor C11 is 100nF / 50V, the capacitor C14 is 100nF / 50V, the capacitor C16 is 36pF, the capacitor C17 is 75pF, the capacitor C23 is 75pF, and the capacitor C27 is 36pF.

[0009] Preferably, the inductor L1 is 560nH, and the inductor L3 is 560nH.

[0010] Preferably, the control unit is connected to the wireless communication 4G module through a stand-up socket and a stand-up pin.

[0011] The utility model provides an anti-theft door lock, which has the following beneficial effects.

[0012] 1. This utility model enhances the security of door locks through the NFC radio frequency matching module, greatly improving the user's personal safety. It can also improve the card recognition rate and facilitate replacement and maintenance, which helps reduce the cost of use.

[0013] 2. This utility model adopts a differential transmission circuit design. By matching the impedance of the TX1 and TX2 ports with the entire circuit behind the ports, it can maximize the transmission of signal energy to the antenna coil and convert it into electromagnetic energy, thereby improving the card recognition rate.

[0014] 3. The control unit and the wireless communication 4G module of this utility model adopt the connection method of vertical sticker socket and vertical sticker pin, which is convenient and fast. Compared with the traditional direct sticker method, it is easier to replace and repair, which helps to reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of an anti-theft door lock provided by the utility model;

[0016] Figure 2 This is a structural block diagram of the main control board of an anti-theft door lock provided by the utility model;

[0017] Figure 3 This is a circuit diagram of an NFC radio frequency matching module for an anti-theft door lock provided by the utility model.

[0018] In the picture:

[0019] 1. Lock body 2. Main control board. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to specific embodiments and accompanying drawings to facilitate understanding of the present invention.

[0021] like Figure 1 The figure is a schematic diagram of the structure of an anti-theft door lock provided by the present invention. The anti-theft door lock comprises a lock body 1, wherein a main control board 2 is provided inside the lock body 1. Figure 2 The figure shows a block diagram of the main control board structure of an anti-theft door lock provided by the present invention. The main control board 2 is provided with a control unit and a power management unit. The power management unit includes a charging module, a battery module, a power acquisition module, and an interface. The control unit is electrically connected to the battery module, the power acquisition module, the wireless communication 4G module, the NFC radio frequency matching module, the emergency power module, the anti-tampering detection module, the doorbell module, and the driver module. The interface is electrically connected to the battery module and the charging module. The battery module is electrically connected to the charging module and the power acquisition module. The wireless communication 4G module is wirelessly connected to the server.

[0022] like Figure 3 The figure shows a circuit diagram of an NFC radio frequency matching module for an anti-theft door lock provided by the present invention. The circuit structure of the NFC radio frequency matching module is as follows: RX and VMID are connected in parallel with resistor R14, the upper end of resistor R14 is connected to resistor R12, resistor R12 is connected in series with capacitor C11, the negative electrode of capacitor C11 is connected to the negative electrode of capacitor C27, the lower end of resistor R14 is connected to the positive electrode of capacitor C14, and the negative electrode of capacitor C14 is connected to the internal GND. TX1 and TX2 are respectively connected in series with inductors L1 and L3, the lower end of inductor L1 is connected to capacitors C17 and C16, capacitor C16 is connected in series with resistor R16 and connected to the induction coil, wherein capacitor C16 is connected in parallel with capacitor C17, capacitor C23 and capacitor C17 are connected in series with the lower end of inductor L3, the lower end of inductor L3 is connected to capacitor C27, capacitor C18 and capacitor C24 are connected in series, capacitor C19 and capacitor C25 are connected in series, and capacitor C20 is connected in parallel, after which the positive electrode is connected to resistor R16 and the negative electrode is connected to resistor R17, and the other end of resistor R16 and resistor R17 are connected to the antenna coil. The utility model adopts a transmitting differential circuit design, and matches the impedance of the TX1 and TX2 ports with the entire circuit behind the ports, so as to transmit the signal energy to the antenna coil to the maximum extent and convert it into electromagnetic energy, thereby improving the card swiping recognition rate.

[0023] The resistor R12 is 5.1K, the resistor R14 is 820R, the resistor R16 is 0R, and the resistor R17 is 0R. The capacitor C11 is 100nF / 50V, the capacitor C14 is 100nF / 50V, the capacitor C16 is 36pF, the capacitor C17 is 75pF, the capacitor C23 is 75pF, and the capacitor C27 is 36pF. The inductor L1 is 560nH, and the inductor L3 is 560nH. The control unit is connected to the wireless communication 4G module through a stand-up socket and a stand-up pin, which is convenient and fast. Compared with the traditional direct patch method, it is easier to replace and repair, which helps to reduce the cost of use.

[0024] The utility model enhances the security of the door lock through the NFC radio frequency matching module, greatly improving the user's personal safety, while increasing the card recognition rate, and facilitating replacement and maintenance, which is conducive to reducing usage costs.

[0025] This document uses specific examples to illustrate the concept of the utility model in detail. The above examples are only intended to help understand the core concept of the utility model. It should be noted that any obvious modifications, equivalent substitutions, or other improvements made by a person skilled in the art without departing from the concept of the utility model should be included in the scope of protection of the utility model.

Claims

1. An anti-theft door lock, characterized in that: The lock body includes a main control board, a control unit is provided on the main control board, and the control unit is electrically connected to the NFC radio frequency matching module. The circuit structure of the NFC radio frequency matching module is as follows: RX and VMID are connected in parallel with resistor R14, the upper end of resistor R14 is connected to resistor R12, resistor R12 is connected in series with capacitor C11, the negative electrode of capacitor C11 is connected to the negative electrode of capacitor C27, the lower end of resistor R14 is connected to the positive electrode of capacitor C14, the negative electrode of capacitor C14 is connected to the internal GND, TX1 and TX2 are connected in series Inductors L1 and L3 are connected in series, the lower end of inductor L1 is connected to capacitors C17 and C16, capacitor C16 is connected in series with resistor R16 and connected to the induction coil, wherein capacitor C16 and capacitor C17 are connected in parallel, capacitor C23 and capacitor C17 are connected in series to the lower end of inductor L3, the lower end of inductor L3 is connected to capacitor C27, capacitor C18 and capacitor C24 are connected in series, capacitor C19 and capacitor C25 are connected in series, and capacitor C20 is connected in parallel, and the positive pole is connected to resistor R16, and the negative pole is connected to resistor R17, and the other end of resistor R16 and resistor R17 are connected to the antenna coil.

2. The anti-theft door lock according to claim 1, characterized in that: The main control board is also provided with a power management unit, which includes a charging module, a battery module, a power collection module and an interface. The control unit is electrically connected to the battery module, the power collection module, the wireless communication 4G module, the emergency power supply module, the anti-dismantling detection module, the doorbell module and the drive module respectively. The interface is electrically connected to the battery module and the charging module respectively. The battery module is electrically connected to the charging module and the power collection module respectively. The wireless communication 4G module is wirelessly connected to the server.

3. The anti-theft door lock according to claim 2, characterized in that: The resistor R12 is 5.1KΩ, the resistor R14 is 820Ω, the resistor R16 is 0Ω, and the resistor R17 is 0Ω.

4. The anti-theft door lock according to claim 3, characterized in that: The capacitor C11 is 100 nF / 50 V, the capacitor C14 is 100 nF / 50 V, the capacitor C16 is 36 pF, the capacitor C17 is 75 pF, the capacitor C23 is 75 pF, and the capacitor C27 is 36 pF.

5. The anti-theft door lock according to claim 4, characterized in that: The inductor L1 is 560nH, and the inductor L3 is 560nH.

6. The anti-theft door lock according to claim 5, characterized in that: The control unit is connected to the wireless communication 4G module through a stand-up socket and a stand-up pin.

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