Door lock structure and door lock system based on terminal control

Abstract

The utility model provides a door lock structure and a door lock system based on terminal control, and relates to the technical field of intelligent door locks, the door lock structure comprises a wireless receiving coil, an identity recognizer, a relay and an electromagnetic lock; the wireless receiving coil is electrically connected with the identity recognizer and the relay, the identity recognizer is further electrically connected with the relay, and the relay is further electrically connected with the electromagnetic lock. The wireless receiving coil is used for carrying out electromagnetic coupling with a terminal with a near field communication (NFC) function to generate induction current and supplying power to the whole circuit; the identity recognizer is used for recognizing and verifying the identity of a user and sending an unlocking signal to the relay when the identity verification of the user is passed; the relay is used for switching on a circuit where the electromagnetic lock is located when receiving the unlocking signal and supplying power to the electromagnetic lock; the electromagnetic lock is used for unlocking when powered on. According to the door lock structure, unlocking can be achieved without an external power source and a built-in battery, and door lock authority management can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of smart door lock technology, and in particular to a door lock structure and a door lock system based on terminal control. Background Technology

[0002] Currently, door locks on the market are mainly divided into two categories:

[0003] The first type is the traditional mechanical lock, which requires a physical key to open. If the key is forgotten or lost, the lock cannot be opened. Therefore, users need to carry the key with them at all times, and if the key is lost, a replacement key needs to be made.

[0004] The second type is electronic locks, which require an external power source or battery power. If the external power source is interrupted or the battery is dead, the lock will not be able to open. Therefore, it is necessary to keep the external power source uninterrupted or replace the battery in time. Utility Model Content

[0005] This utility model was developed to at least partially solve the technical problems of existing mechanical locks requiring users to carry keys and electronic locks requiring uninterrupted external power supply or timely battery replacement.

[0006] According to one aspect of this utility model, a door lock structure is provided, comprising: a wireless receiving coil, an identity reader, a relay, and an electromagnetic lock; the wireless receiving coil is electrically connected to the identity reader and the relay respectively, the identity reader is also electrically connected to the relay, and the relay is also electrically connected to the electromagnetic lock; the wireless receiving coil is used to electromagnetically couple with a terminal having near-field communication (NFC) function to generate an induced current and to power the entire circuit; the identity reader is used to identify and verify the user's identity, and to send an unlocking signal to the relay when the user's identity verification is successful; the relay is used to connect the circuit containing the electromagnetic lock when it receives the unlocking signal, thereby powering the electromagnetic lock; the electromagnetic lock is used to unlock when powered on.

[0007] Optionally, the identity identifier includes a radio frequency integrated circuit (RFIC) receiver; the RFIC receiver is used to receive a radio frequency signal carrying user identity information sent by the terminal, and compare the user identity information carried by the radio frequency signal with the identity information stored internally. If the match is successful, an unlocking signal is sent to the relay.

[0008] Optionally, the RFIC receiver is further configured to return a successful card swipe signal to the terminal when a match is successful, so that the terminal can issue a successful card swipe prompt based on the successful card swipe signal, and / or return a failed card swipe signal to the terminal when a match fails, so that the terminal can issue a failed card swipe prompt based on the failed card swipe signal.

[0009] Optionally, the identity information stored internally by the RFIC receiver is IC card information; the RFIC receiver is provided with an onboard button for storing newly added IC card information into the internal database and deleting IC card information already stored in the internal database.

[0010] Optionally, the identity recognition device includes a fingerprint recognition device; the fingerprint recognition device is used to receive fingerprint information input by the user and compare the fingerprint information input by the user with the fingerprint information stored internally. If the match is successful, an unlocking signal is sent to the relay.

[0011] Optionally, the fingerprint reader is also used to store newly added fingerprint information into an internal database and to delete fingerprint information already stored in the internal database.

[0012] Optionally, the identity recognition device includes an iris recognition device; the iris recognition device is used to receive iris information input by the user and compare the iris information input by the user with the iris information stored internally, and if the match is successful, send an unlocking signal to the relay.

[0013] Optionally, the iris recognizer is also used to store newly added iris information into an internal database and to delete iris information already stored in the internal database.

[0014] Optionally, one end of the wireless receiving coil is electrically connected to the positive terminal of the identity scanner, the DC+ port and the COM port of the relay, respectively; the other end of the wireless receiving coil is electrically connected to the negative terminal of the identity scanner, the DC- port of the relay and the negative terminal of the electromagnetic lock, respectively; the signal output port of the identity scanner is electrically connected to the signal input port of the relay; and the NO port of the relay is electrically connected to the positive terminal of the electromagnetic lock.

[0015] According to another aspect of the present invention, a door lock system based on terminal control is provided, comprising: a terminal and the aforementioned door lock structure.

[0016] The technical solution provided by this utility model can include the following beneficial effects:

[0017] By reverse-powering the door lock structure from the terminal, the lock can be unlocked without an external power source or built-in battery, solving the problem of existing electronic locks requiring an external power source or built-in battery. Furthermore, by verifying the user's identity through an identification device, and only after successful verification, a relay controls the electromagnetic lock to power on and unlock, enabling door lock access control, improving security, and preventing unauthorized unlocking. Moreover, the lock structure is easy to install, compact, and low-cost, requiring only a single terminal to perform all related functions.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0020] Figure 1 A structural block diagram of the door lock structure provided in the embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the door lock structure provided in an embodiment of the present utility model;

[0022] Figure 3 This is a structural block diagram of a terminal-controlled door lock system provided in an embodiment of the present invention.

[0023] In the diagram: 100 - door lock structure; 101 - wireless receiving coil; 102 - identity recognition device; 103 - relay; 104 - electromagnetic lock; 200 - terminal. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the specific implementation methods of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation methods described herein are for illustration and explanation only and are not intended to limit the utility model.

[0025] It should be noted that the orientation or positional relationship indicated by various directional terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Where there is no conflict, the embodiments and features in the embodiments of this utility model can be arbitrarily combined with each other.

[0026] Those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. It should be understood that when an element is referred to as "connected" or "coupled" to another element, it can be a direct connection or coupling to the other element, or there may be intermediate elements.

[0027] Fiber optic junction boxes, also known as fiber distribution boxes, are devices that provide termination and patching services for backbone and distribution layer fiber optic cables. Currently, most fiber optic junction boxes still use mechanical locks, which present problems such as difficulty in obtaining and borrowing keys, easy loss, and inability for maintenance personnel to open the boxes promptly during equipment maintenance. Some maintenance personnel, in their haste to operate, even forcefully open the locks, damaging the boxes. Electronic locks require external power or internal batteries, which present problems such as difficulty in obtaining external power sources or frequent battery replacements. Furthermore, there are issues with chaotic access control, making it difficult to trace and assign responsibility. To solve these problems, this invention provides a door lock structure that eliminates the need for users to carry keys, external power sources, or internal batteries, enabling unlocking and access control management. This reduces the risk of the junction box being forcibly damaged due to lack of keys, and allows for on-site addition and deletion of access permissions for management and tracking. Specific embodiments are described in detail below.

[0028] like Figure 1 As shown, this utility model embodiment provides a door lock structure 100, including: a wireless receiving coil 101, an identity recognition device 102, a relay 103, and an electromagnetic lock 104.

[0029] The wireless receiving coil 101 is electrically connected to both the identity reader 102 and the relay 103. The identity reader 102 is also electrically connected to the relay 103, and the relay 103 is also electrically connected to the electromagnetic lock 104. The wireless receiving coil 101 is used to electromagnetically couple with a terminal with NFC functionality to generate an induced current and power the entire circuit. The identity reader 102 is used to identify and verify the user's identity and to send an unlocking signal to the relay 103 when the user's identity verification is successful. The relay 103 is used to activate the circuit containing the electromagnetic lock 104 when it receives the unlocking signal, thus powering the electromagnetic lock 104. The electromagnetic lock 104 is used to unlock when powered on.

[0030] The wireless receiving coil supports the Qi protocol and has a specification of 7.5W (5V / 1.5A). The Qi protocol is a wireless charging standard used to wirelessly power electronic devices such as smartphones, headphones, and wearable devices. The wireless receiving coil, acting as a radio signal receiver, electromagnetically couples with an NFC-enabled terminal to generate an induced electromotive force, which in turn produces an induced current to power the entire circuit. During coupling, the effectiveness of the coupling can be determined by detecting changes in voltage or current across the wireless receiving coil. If the voltage or current values ​​are not as expected, the position of the terminal relative to the wireless receiving coil needs to be adjusted, or obstacles between the terminal and the wireless receiving coil need to be checked.

[0031] In this system, the NFC-enabled terminal and the wireless receiving coil utilize NFC (Near Field Communication) technology to achieve reverse charging, meaning the terminal supplies power to the circuitry within the door lock structure. Of course, to achieve reverse charging, the terminal needs to have a built-in NFC chip. An NFC chip is a miniature radio frequency chip with an antenna, capable of transmitting and receiving radio frequency signals.

[0032] NFC power generation works by using NFC technology to establish a radio magnetic field between the charging device and the device being charged. This allows the charging device to charge the device via electromagnetic induction. The core of NFC power generation technology lies in the transmission and induction of this radio magnetic field. When a charging device (an NFC-enabled terminal) approaches a device being charged (a door lock structure), the charging device sends a radio signal to activate the device. The wireless receiving coil of the device being charged then generates electrical energy using electromagnetic induction and transfers this energy to its internal circuitry.

[0033] In this embodiment, the terminal supplies power to the door lock structure in reverse, eliminating the need for an external power source and built-in battery. This solves the problem of existing electronic locks requiring external power or built-in batteries. Furthermore, the user's identity is verified by an identification device. Only after successful verification is the electromagnetic lock energized via a relay to unlock, enabling door lock access control, improving security, and preventing unauthorized access. Moreover, the door lock structure is easy to install, compact, and requires only one terminal to perform its functions, reducing hardware procurement costs, improving compatibility, and making it suitable for devices such as optical distribution boxes.

[0034] In practical applications, existing smartphones with NFC functionality and reverse charging support can be used as terminals. For example, the Mate 60 Pro smartphone from a certain brand has NFC functionality, supports 50W wireless super-fast charging, and supports 20W wireless reverse charging. During use, it is necessary to ensure good contact and accurate positioning between the wireless receiving coil and the smartphone to guarantee that the wireless receiving coil can obtain the maximum amount of power provided by the smartphone's reverse charging.

[0035] "Reverse charging" refers to the process where a smartphone, when connected to other electronic devices, switches to acting as a power bank to discharge and charge those devices. With smartphone battery capacities increasing, many manufacturers have considered providing users with more features, and reverse charging technology emerged as a result.

[0036] Reverse charging technology is mainly divided into wired charging and wireless charging. Wireless charging is achieved through electromagnetic induction. When a coil in a smartphone is energized, it generates a magnetic field. Coils in other electronic devices sense this magnetic field and generate an induced current, thus charging the other devices. Wired charging is achieved through OTG (On-Grid Transfer) technology. It requires two electronic devices to be connected via a data cable. Using OTG reverse charging, a smartphone can instantly become a power bank, directly charging other electronic devices.

[0037] In one embodiment, the identity identifier 102 includes an RFIC receiver.

[0038] RFIC refers to Radio Frequency Integrated Circuit, an electronic integrated circuit that integrates radio frequency circuitry and digital circuitry. RFIC receivers also have NFC functionality and can operate at 5V.

[0039] NFC is a wireless communication technology that enables short-range data transfer between two electronic devices. It works by using electromagnetic induction; when two electronic devices are close together, a virtual connection is established, allowing them to transfer data. Because of the close proximity, NFC data transfer is fast and highly secure. NFC can be used to transfer files, swipe public transport cards, and access control cards, among other things.

[0040] The RFIC receiver, acting as a card reader, receives radio frequency signals carrying user identity information sent by the terminal, compares the user identity information carried by the radio frequency signal with the identity information stored internally, and sends an unlock signal to the relay 103 if the match is successful.

[0041] In this embodiment, after receiving the radio frequency signal (including the current card swipe information) from the terminal, the RFIC receiver will transmit the radio frequency signal to the main control chip of the RFIC receiver. The main control chip of the RFIC receiver is responsible for parsing the radio frequency signal and transmitting the parsed signal data to the application of the RFIC receiver. The application of the RFIC receiver compares the parsed signal data with the card swipe data stored inside the RFIC receiver to verify the accuracy and legality of the current card swipe information. If the comparison is successful, the RFIC receiver will send an unlocking signal to the relay.

[0042] In one specific embodiment, the RFIC receiver is further configured to return a successful card swipe signal to the terminal upon successful matching, so that the terminal issues a successful card swipe prompt based on the successful card swipe signal.

[0043] In this embodiment, the successful card swipe notification can be a text notification, such as a pop-up message box displaying "Card swipe successful", or it can be an audio notification, such as playing a "Card swipe successful" notification sound.

[0044] In one specific embodiment, the RFIC receiver is further configured to return a failed card swipe signal to the terminal when a match fails, so that the terminal issues a failed card swipe prompt based on the failed card swipe signal.

[0045] In this embodiment, the failed card swipe notification can be a text notification, such as a pop-up message box displaying "Card swipe failed", or it can be an audio notification, such as playing a "Card swipe failed" notification sound.

[0046] In one specific implementation, the identity information stored inside the RFIC receiver is IC card information.

[0047] The terminal's built-in NFC chip can also swipe IC cards and send the IC card information to an RFIC receiver via radio frequency signals for comparison. One NFC chip can store information for one or more virtual IC cards (also known as access cards). Each virtual IC card is equivalent to an NFC electronic key, and each NFC electronic key can open one or more door locks. A door lock can be opened by one or more NFC electronic keys.

[0048] The virtual IC card in the terminal is equivalent to an electronic tag. The NFC chip in the terminal can establish a magnetic field with the RFIC receiver. When the electronic tag in the terminal enters the magnetic field, it sends a radio frequency signal carrying the IC card information to the RFIC receiver through electromagnetic coupling. After receiving the IC card information, the RFIC receiver performs data verification. If the match is successful, it outputs a high-level signal (i.e., an unlocking signal) to the relay to trigger the subsequent unlocking operation.

[0049] Accordingly, the RFIC receiver is equipped with onboard buttons for storing newly added IC card information into the internal database and deleting IC card information already stored in the internal database.

[0050] In this context, "board-mounted" refers to a function or component being directly mounted on a circuit board or system motherboard. For example, some functions may not be independent components but exist as an integrated part of the motherboard; this situation can be described as board-mounted.

[0051] In this embodiment, IC card information can be added or deleted via onboard buttons, facilitating timely adjustment of access control information and enabling on-site access control management. This is convenient and quick, allowing for the timely addition or deletion of corresponding access card permissions when personnel permissions change.

[0052] In one embodiment, the identity identifier 102 includes a fingerprint identifier.

[0053] The fingerprint reader receives the fingerprint information entered by the user and compares it with the fingerprint information stored internally. If a match is found, an unlock signal is sent to the relay.

[0054] In one specific implementation, the fingerprint reader is also used to store newly added fingerprint information into an internal database, and to delete fingerprint information already stored in the internal database.

[0055] In one embodiment, the identity recognizer 102 includes an iris recognizer.

[0056] The iris recognition device receives iris information input by the user and compares it with the iris information stored internally. If a match is found, an unlock signal is sent to the relay.

[0057] In one specific implementation, the iris recognizer is also used to store newly added iris information into an internal database, and to delete iris information already stored in the internal database.

[0058] It should be noted that the identity reader 102 may include only one of the RFIC receiver, fingerprint reader, and iris reader, or any two of them, or all three. In other words, in addition to the authentication method of using the terminal's built-in NFC function to simulate IC card communication with the RFIC receiver, other authentication methods such as fingerprint recognition and iris recognition can be selected as needed, improving the compatibility and scalability of the door lock structure.

[0059] When the identity reader 102 uses only one authentication method, a single relay is used accordingly. When the identity reader 102 uses more than one authentication method, multiple relays are used accordingly, with each relay corresponding to one authentication method, used to control the door lock switch based on the authentication result of the corresponding authentication method. The relay specification can be single-channel / 5V.

[0060] In one specific embodiment, one end of the wireless receiving coil 101 is electrically connected to the positive terminal of the identity detector 102, the DC+ port and the COM port of the relay 103, respectively. The other end of the wireless receiving coil 101 is electrically connected to the negative terminal of the identity detector 102, the DC- port of the relay 103 and the negative terminal of the electromagnetic lock 104, respectively. The signal output port of the identity detector 102 is electrically connected to the signal input port of the relay 103, and the NO port of the relay 103 is electrically connected to the positive terminal of the electromagnetic lock 104.

[0061] In this embodiment, the wireless receiving coil 101, the identity scanner 102, and the electromagnetic lock 104 are all connected to the relay 103. The relay 103 controls the door lock opening and closing in the entire circuit. The electromagnetic lock 104 utilizes the principle of electromagnetism. When current flows through the electromagnetic lock 104, it generates a magnetic force that attracts the bolt, thus unlocking the door. When the power to the electromagnetic lock 104 is cut off, it loses its attraction and locks the door. The electromagnetic lock 104 can be 5V / 500mA. The specific model of the electromagnetic lock 104 can be selected by those skilled in the art according to actual needs, and this invention does not limit this selection.

[0062] like Figure 2 As shown, taking the identity identifier 102 using an RFIC receiver as an example, it needs to be designed according to the pre-designed schematic diagram (i.e. Figure 2 The wireless receiving coil 101, RFIC receiver, relay 103, and electromagnetic lock 104 are electrically connected. Specifically, one end of the wireless receiving coil 101 is electrically connected to the positive terminal of the RFIC receiver, the DC+ port and the COM port of the relay 103, respectively. The other end of the wireless receiving coil 101 is electrically connected to the negative terminal of the RFIC receiver, the DC- port of the relay 103, and the negative terminal of the electromagnetic lock 104, respectively. The OUT port of the RFIC receiver is electrically connected to the IN port of the relay 103, and the NO port of the relay 103 is electrically connected to the positive terminal of the electromagnetic lock 104.

[0063] For relays, this includes DC+, DC-, IN, COM, NO, and NC ports. IN is short for input, referring to the signal input terminal; NC is short for Normally Closed, referring to a normally closed terminal; NO is short for Normally Open, referring to a normally open terminal; COM is short for Common, referring to the common terminal, which can be connected to either the NC or NO terminal depending on whether power is applied. When power is applied, the NC and COM terminals are disconnected, while the NO and COM terminals are connected. When power is de-energized, the NC and COM terminals are connected, while the NO and COM terminals are disconnected.

[0064] During the connection process, pay attention to the pin definitions and connection sequence of each component to ensure a secure connection and avoid problems such as loose connections or short circuits. For each connection point, use appropriate tools to tighten it, such as using a screwdriver to tighten the screws or using a soldering tool to solder (if applicable). After the connection is completed, check the circuit connection again to ensure it is correct. This can be done by referring to the schematic diagram one by one, or by using tools such as a multimeter to test the circuit continuity.

[0065] After connecting all the components of the door lock structure, activate the reverse charging function of your smartphone and use professional testing instruments (such as a voltmeter and ammeter) to check the voltage and current at relevant nodes in the circuit. For example, check if the voltage across the wireless receiving coil is within the expected range (for a 7.5W (5V / 1.5A) coil, the voltage should normally be close to 5V), and whether the current through the wireless receiving coil meets the requirements. If the voltage or current values ​​are abnormal, check if the reverse charging settings of the smartphone are correct, if the coupling between the smartphone and the wireless receiving coil is good, and if there are other fault points in the circuit.

[0066] Next, test the smartphone's NFC function. Using tools or devices that simulate IC card information, send different virtual IC card information to the RFIC receiver for verification. Observe whether the RFIC receiver can accurately identify and verify this information, and whether it can correctly output a high level when a match is successful. If verification fails or the output level is incorrect, check whether the smartphone's NFC settings are correct, whether the distance and angle between the smartphone and the RFIC receiver are appropriate, and whether the RFIC receiver itself is faulty.

[0067] Next, test the operation of the relay and electromagnetic lock. By simulating a high-level output from the RFIC receiver, observe whether the relay can be triggered accurately, specifically whether the COM and NO ports of the relay can be closed correctly. Simultaneously, check whether the electromagnetic lock can open normally after the relay is closed, and whether it can close normally under simulated power failure (COM and NO ports disconnected). If the relay or electromagnetic lock malfunctions, check whether the relay's control circuit is correct, whether the electromagnetic lock's power supply is normal, and whether the relay or electromagnetic lock itself is faulty.

[0068] To unlock, bring your smartphone close to the wireless receiving coil and activate reverse charging and NFC. During this process, ensure the smartphone and coil are at the correct distance and angle to guarantee effective power transfer and data verification. The distance between the smartphone and the wireless receiving coil should be within a few centimeters, and the angle deviation should not be too large. The smartphone uses NFC to send the stored virtual IC card to the RFIC receiver for verification. Specifically, a virtual connection is established between the smartphone and the RFIC receiver using electromagnetic induction, transmitting data for verification. If the verification is successful, the RFIC receiver will output a high level through its OUT port, triggering the COM and NO ports of the relay to close. After the relay closes, the wireless receiving coil powers the electromagnetic lock, causing the lock to generate magnetic force that attracts the bolt, thus unlocking the door. Throughout the unlocking process, you can hear the electromagnetic lock attracting the bolt and observe the change in the lock's status.

[0069] After use, remove the smartphone from the wireless receiving coil and RFIC receiver. As the distance between the smartphone and the coil and RFIC receiver increases, the electromagnetic lock loses its magnetism, the bolt springs back, and the door closes. You can check the lock's status again to confirm that the door closed successfully.

[0070] The RFIC receiver's onboard buttons allow for on-site management operations such as adding and deleting IC card information. During these operations, security must be ensured, for example, by setting access permissions so that only authorized personnel can perform IC card management operations. Press the corresponding button to add or delete IC cards as needed. When adding an IC card, relevant authorization information, such as the IC card number and user's name, must be entered; when deleting an IC card, confirmation is required to avoid accidental deletion. These operations enable authorization management and tracking of access control cards, facilitating control over door lock access permissions.

[0071] by Figure 2 For example, the hardware configuration of the door lock structure is detailed in Table 1 below.

[0072] Table 1

[0073]

[0074] The working principle of the door lock structure using the above hardware configuration is as follows:

[0075] (1) Bring the smartphone close to the door lock structure and turn on the reverse charging function so that the wireless receiving coil generates current through electromagnetic induction to provide power to the subsequent circuit, thereby powering the door lock structure through the smartphone.

[0076] (2) Enable the NFC function of the smartphone to simulate the communication between the IC card and the RFIC receiver, and send the virtual IC card information to the RFIC receiver. The RFIC receiver verifies the virtual IC card information stored locally with the virtual IC card information sent by the smartphone. If the verification is successful, a high-level signal is output to the relay through the OUT port.

[0077] (3) After receiving a high-level signal from the OUT port of the RFIC receiver, the IN port of the relay switches to high-level mode, triggering the COM port and NO port to close. At this time, the wireless receiving coil supplies power to the electromagnetic lock, and the electromagnetic lock generates magnetic force to attract the bolt, thereby unlocking the lock.

[0078] (4) After use, remove the smartphone. When the smartphone is removed from the wireless receiving coil and RFIC receiver, it can no longer generate induced current, the electromagnetic lock loses its magnetic force, the bolt springs back, and the door is locked.

[0079] The door lock structure described in this embodiment has the following characteristics:

[0080] 1. By utilizing the reverse charging function of the terminal to power the door lock of the (optical distribution box), the problem of existing electronic locks requiring dry cell batteries or direct external power supply is solved.

[0081] 2. By implementing identity verification and unlocking functions through the terminal, the risk of maintenance personnel forcibly damaging the optical distribution box door lock due to not having the key can be reduced to a certain extent.

[0082] 3. Virtual IC cards (access cards) can be added and deleted on-site, and users can be authorized. Management is convenient and can be tracked.

[0083] 4. Easy to install and small in size, it can realize functions such as reverse power supply, identity verification and unlocking with only one terminal.

[0084] 5. The procurement cost of various hardware components is low, with an initial estimated procurement cost of only about 60 yuan, which reduces the overall cost of the door lock structure. Moreover, it has strong compatibility and is suitable for various application scenarios such as optical distribution boxes, residential communities, office buildings, communication facilities, and power facilities, and can meet the door lock needs in different environments.

[0085] The door lock structure provided in this embodiment of the invention is based on Internet of Things (IoT) technology and utilizes the terminal's reverse charging technology and NFC technology to achieve unlocking. This door lock structure requires neither an external power source nor a built-in battery; it is powered solely by the terminal's reverse charging technology, solving the problem of inconvenient power supply in existing electronic locks. Furthermore, it utilizes the terminal's NFC function to simulate communication between an IC card and an RFIC receiver, enabling door lock access management (authentication management). Therefore, power supply, identity authentication, and automatic unlocking can all be achieved through the terminal alone. Moreover, it requires no energy storage, triggers instantly, and unlocks on demand, eliminating concerns about long-term power supply. The door lock structure also features small size, low cost, ease of use, convenient installation, high efficiency, and strong scalability.

[0086] like Figure 2 As shown, this utility model embodiment also provides a door lock system based on terminal control, which includes a terminal 200 and the door lock structure 100 described in the previous embodiment.

[0087] The terminal-controlled door lock system provided in this embodiment of the invention achieves interconnection between the door lock and other smart terminals through the Internet of Things (IoT). Unlocking is achieved using the terminal's reverse charging and NFC technology, eliminating the need for dry batteries, external power supplies, and energy storage modules. Power supply, identity verification, and door lock control can all be performed solely through the terminal. Furthermore, multiple independent NFC electronic keys can be set for each door lock on-site, and one NFC electronic key can manage multiple door locks simultaneously, making management convenient. This system can be widely applied in various scenarios such as factories, residential communities, office buildings, communication facilities, and power facilities.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A door lock structure, characterized in that, include: The system comprises a wireless receiving coil, an identity scanner, a relay, and an electromagnetic lock. The wireless receiving coil is electrically connected to both the identity scanner and the relay. The identity scanner is also electrically connected to the relay, and the relay is also electrically connected to the electromagnetic lock. The wireless receiving coil is used to electromagnetically couple with a terminal that has Near Field Communication (NFC) functionality to generate an induced current and to power the entire circuit. The identity scanner is used to identify and verify the user's identity and to send an unlocking signal to the relay when the user's identity verification is successful. The relay is used to activate the circuit containing the electromagnetic lock when it receives the unlocking signal, thus powering the electromagnetic lock. The electromagnetic lock is used to unlock when powered on. When the electromagnetic lock is powered on, it generates magnetic force to attract the bolt and unlock. When the electromagnetic lock is de-powered, it loses its attraction and locks the door. The identity identifier includes a radio frequency integrated circuit (RFIC) receiver. The RFIC receiver receives a radio frequency signal carrying user identity information sent by the terminal and compares the user identity information carried by the radio frequency signal with the identity information stored internally. If the match is successful, an unlocking signal is sent to the relay. The identity information stored internally by the RFIC receiver is IC card information. The NFC chip in the terminal can establish a magnetic field with the RFIC receiver. When the virtual IC card in the terminal enters the magnetic field, it sends a radio frequency signal carrying IC card information to the RFIC receiver through electromagnetic coupling. After receiving the IC card information, the RFIC receiver performs data verification. If the match is successful, an unlocking signal is output to the relay. One end of the wireless receiving coil is electrically connected to the positive terminal of the RFIC receiver, the DC+ port and the COM port of the relay, respectively. The other end of the wireless receiving coil is electrically connected to the negative terminal of the RFIC receiver, the DC- port of the relay and the negative terminal of the electromagnetic lock, respectively. The signal output port of the RFIC receiver is electrically connected to the signal input port of the relay, and the NO port of the relay is electrically connected to the positive terminal of the electromagnetic lock.

2. The door lock structure according to claim 1, characterized in that, The RFIC receiver is also configured to: return a successful card swipe signal to the terminal when a match is successful, so that the terminal can issue a successful card swipe prompt based on the successful card swipe signal; and / or return a failed card swipe signal to the terminal when a match fails, so that the terminal can issue a failed card swipe prompt based on the failed card swipe signal.

3. The door lock structure according to claim 1, characterized in that, The RFIC receiver is equipped with an onboard button for storing newly added IC card information into the internal database and deleting IC card information already stored in the internal database.

4. The door lock structure according to claim 1, characterized in that, The identity recognition device includes a fingerprint recognition device; the fingerprint recognition device is used to receive fingerprint information input by the user and compare the fingerprint information input by the user with the fingerprint information stored internally. If the match is successful, an unlocking signal is sent to the relay.

5. The door lock structure according to claim 4, characterized in that, The fingerprint reader is also used to store newly added fingerprint information into an internal database and to delete fingerprint information already stored in the internal database.

6. The door lock structure according to claim 1, characterized in that, The identity recognition device includes an iris recognition device; the iris recognition device is used to receive iris information input by the user and compare the iris information input by the user with the iris information stored internally. If the match is successful, an unlocking signal is sent to the relay.

7. The door lock structure according to claim 6, characterized in that, The iris recognizer is also used to store newly added iris information into an internal database, and to delete iris information already stored in the internal database.

8. A door lock system based on terminal control, characterized in that, Includes a terminal and a door lock structure as described in any one of claims 1-7.

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