Anti-prying alarm device for door lock of distribution box

Abstract

The utility model relates to the technical field of distribution box door lock prying prevention, in particular to a distribution box door lock prying prevention alarm device which comprises a connecting line integrating two sets of wires, a control mechanism is arranged on one side of the connecting line, and the connecting line is fixedly installed at a proximity switch sending end and a proximity switch receiving end through the two sets of wires respectively. The proximity switch sending end is fixedly installed on the inner side of the distribution box door and is fixedly provided with an NFC chip through the other set of wires, the NFC chip is fixedly installed on the side, away from the proximity switch sending end, of the distribution box door, and the proximity switch receiving end is fixedly installed on the inner side of the distribution box and is axially opposite to the proximity switch sending end; according to the utility model, the state of the box door is detected through magnetic induction, local alarm and remote pushing are remotely and synchronously triggered, and the problems of alarm lag and tracking are solved; the dual mechanisms of NFC verification and physical detection inhibit false alarms, illegal prying is accurately alarmed, non-inductive passing is guaranteed, and environment misjudgment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of anti-pry technology for distribution box door locks, specifically an anti-pry alarm device for distribution box door locks. Background Technology

[0002] The anti-pry alarm device for electrical distribution box door locks is a protective device that monitors the lock status in real time and identifies abnormal prying behavior. It can trigger an alarm when unauthorized opening is detected, preventing unauthorized intrusion. It achieves active protection through physical sensing and electronic control technology, overcoming the shortcomings of traditional locks' passive protection.

[0003] However, most existing anti-pry alarm devices for distribution box doors rely on mechanical locks or single electronic sensors, lacking a design that integrates physical signal detection and remote communication. This results in alarm information being limited to the scene and unable to trace the entire security incident. At the same time, authentication methods (such as passwords or IC cards only) are easily copied or cracked, and they are not deeply integrated with the door lock status monitoring logic, making it difficult to simultaneously achieve both convenience and anti-pry reliability. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-pry alarm device for distribution box door locks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pry-proof alarm device for a distribution box door lock includes a connecting wire integrating two sets of wires. A control mechanism is provided on one side of the connecting wire. The connecting wire is fixedly installed at a proximity switch transmitter and a proximity switch receiver via the two sets of wires. The proximity switch transmitter is fixedly installed on the inside of the distribution box door and has an NFC chip fixedly installed via the other set of wires. The NFC chip is fixedly installed on the side of the distribution box door away from the proximity switch transmitter. The proximity switch receiver is fixedly installed inside the distribution box and is axially opposed to the proximity switch transmitter.

[0007] The control mechanism includes a circuit board, on which a remote signal transmission module is integrated. A connecting wire is fixedly installed on one side of the circuit board. The circuit board is used to process the trigger signals from the proximity switch transmitter and the proximity switch receiver and generate alarm commands.

[0008] Preferably, the control mechanism further includes a control box, with a connecting wire running through one side of the control box, and a sound-generating unit fixedly installed near the point where the connecting wire runs through the control box.

[0009] Preferably, a power cord is provided on the side of the control box away from the sound-generating unit. The power cord passes through the control box and is fixedly installed on the battery pack. The end of the power cord is used to connect to an external power supply device.

[0010] Preferably, the control box is equipped with corner plates by bolts on the side where the power cord passes through and the side where the connecting wire passes through, and the corner plates have fixing holes on the side away from the control box.

[0011] Preferably, the battery pack is bolted inside the control compartment, and the circuit board is bolted to the side of the control compartment adjacent to the battery pack. The control compartment is located on the side of the control box away from the sound-generating unit.

[0012] Preferably, the control compartment opening is provided with a slot, and a sealing door is installed in the slot by bolts, and the sealing door is provided with a heat dissipation window.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This anti-pry alarm device for distribution box doors, through the interaction of magnetic induction signals between the proximity switch transmitter and receiver and the coordinated control of the remote signal transmission module, can detect illegal prying of the box door in real time and simultaneously trigger local audible and visual alarms and remote information push. It solves the technical problems of delayed alarms and inability to remotely track traditional devices, and significantly improves the anti-theft response speed and monitoring range.

[0015] This anti-pry alarm device for distribution box door locks uses a dual security mechanism of NFC chip authentication and proximity switch physical status detection. It automatically suppresses false alarms during legitimate operation and immediately locks the alarm when there is illegal prying. This ensures unobtrusive access for authorized personnel and avoids the risk of misjudgment caused by the susceptibility of a single sensor to environmental interference. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the control mechanism of this utility model;

[0018] Figure 3 This is a disassembly diagram of the control box of this utility model;

[0019] Figure 4 This is a plan view of the control box of this utility model.

[0020] In the diagram: 101, connecting wire; 102, control mechanism; 103, proximity switch transmitter; 104, proximity switch receiver; 105, NFC chip; 106, circuit board; 107, remote signal transmission module; 201, control box; 202, sound unit; 203, power cord; 204, battery pack; 205, corner connecting plate; 206, fixing hole; 301, control compartment; 302, card slot; 303, sealing door; 304, heat dissipation window. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0023] A pry-proof alarm device for a distribution box door lock includes a connecting line 101 integrating two sets of wires. A control mechanism 102 is provided on one side of the connecting line 101. The connecting line 101 is fixedly installed on a proximity switch transmitter 103 and a proximity switch receiver 104 respectively via the two sets of wires. The proximity switch transmitter 103 is fixedly installed on the inside of the distribution box door and an NFC chip 105 is fixedly installed on it via the other set of wires. The NFC chip 105 is fixedly installed on the side of the distribution box door away from the proximity switch transmitter 103. The proximity switch receiver 104 is fixedly installed on the inside of the distribution box and is axially opposed to the proximity switch transmitter 103.

[0024] The control mechanism 102 includes a circuit board 106, on which a remote signal transmission module 107 is integrated. A connecting line 101 is fixedly installed on one side of the circuit board 106. The circuit board 106 is used to process the trigger signals of the proximity switch transmitter 103 and the proximity switch receiver 104 and generate alarm commands.

[0025] The above solution integrates two sets of wires and connects them to the proximity switch transmitter and receiver respectively, enabling real-time monitoring of the distribution box door's closing status. The axially opposed mounting of the proximity switch transmitter and receiver ensures stable interaction of magnetic induction signals. The NFC chip installed on the proximity switch transmitter verifies the identity of authorized operators. The circuit board processes the trigger signal and generates alarm commands, providing a rapid response to unauthorized tampering. The integrated remote signal transmission module on the circuit board enables remote transmission of alarm information and full tracking of security events.

[0026] In this embodiment, preferably, the control mechanism 102 further includes a control box 201, a connecting line 101 passing through one side of the control box 201, and a sound-generating unit 202 fixedly installed on the control box 201 near the point where the connecting line 101 passes through.

[0027] The above solution integrates the protection of the alarm components by connecting the control box with the connecting wires and fixing the sound unit in place. By placing the sound unit near the point where the connecting wires pass through, the alarm sound can be effectively propagated and have a deterrent effect on site.

[0028] In this embodiment, preferably, a power cord 203 is provided on the side of the control box 201 away from the sound-generating unit 202. The power cord 203 passes through the control box 201 and is fixedly installed on the battery pack 204. The end of the power cord 203 is used to connect to an external power supply device.

[0029] The above solution allows for a dual power supply mode by setting up a power cord in the control box and connecting the battery pack to the external power supply device; the battery pack can serve as a backup power source to maintain continuous system operation when the external power supply is interrupted.

[0030] In this embodiment, preferably, the control box 201 is equipped with corner plates 205 by bolts on the side where the power line 203 passes through and the side where the connecting line 101 passes through. The corner plates 205 have fixing holes 206 on the side away from the control box 201.

[0031] The above solution enhances the mechanical connection between the control box and the distribution box by fixing corner plates to both sides of the control box with bolts; the corner plates also have fixing holes to accommodate the fixing requirements of different installation scenarios.

[0032] In this embodiment, preferably, the battery pack 204 is bolted inside the control compartment 301, and the circuit board 106 is bolted to the side of the control compartment 301 adjacent to the battery pack 204. The control compartment 301 is located on the side of the control box 201 away from the sound unit 202.

[0033] The above solution allows for centralized protection of the power supply and control module by installing the battery pack and circuit board in the control compartment; by placing the control compartment on the side away from the sound-generating unit, the vibration interference of the alarm sound on the internal components can be reduced.

[0034] In this embodiment, preferably, a slot 302 is provided at the opening of the control compartment 301, and a sealing door 303 is installed in the slot 302 by bolts, and a heat dissipation window 304 is provided on the sealing door 303.

[0035] The above solution, by setting a slot and installing a sealing door at the opening of the control compartment, facilitates the maintenance and replacement of internal components; by opening a heat dissipation window in the sealing door, the heat exchange between the inside and outside of the control compartment can be balanced, preventing the circuit board from degrading due to high temperature.

[0036] In this embodiment, when the distribution box door lock anti-pry alarm device is in use, the proximity switch transmitter 103 installed inside the door and the proximity switch receiver 104 fixed inside the box body maintain axially opposed magnetic induction signal interaction. The two form a closed loop through the wire and connecting line 101 to monitor the closing status of the door in real time. If the door is illegally pried open, causing the magnetic induction signal between the proximity switch transmitter 103 and receiver to be interrupted, the connecting line 101 transmits the signal interruption trigger information to the circuit board 106 (integrating signal conditioning circuit, microcontroller MCU, storage module, drive circuit and remote signal transmission module 107) in the control mechanism 102. The signal conditioning circuit first processes the signal... The input signal is filtered and denoised. The microcontroller (MCU) determines whether the signal interruption is due to illegal prying or environmental interference based on a preset threshold, and generates a corresponding command through the NFC verification strategy pre-stored in the storage module. If illegal prying is determined, the MCU immediately controls the sound-emitting unit 202 to emit a high-decibel alarm sound through the drive circuit, and simultaneously activates the remote signal transmission module 107 (with built-in 4G communication chip, AES-256 encryption unit, and PCB antenna). The MCU sends the alarm command, door position, and prying intensity data to the encryption unit for encryption and encapsulation, and then uploads the encrypted alarm information to the remote monitoring platform or the bound user equipment in real time through the 4G communication chip and PCB antenna, realizing on-site security. The system provides dual protection through deterrence and remote alarm. Simultaneously, an NFC chip 105 installed on the door is connected to a proximity switch transmitter 103 via a wire. When an operator uses a legitimate NFC device to authenticate their identity by bringing it close to the chip, the chip synchronously transmits the authentication signal to the circuit board 106. The microcontroller (MCU) calls the authorization key data in the storage module for matching. Upon successful matching, it automatically suppresses the generation of alarm commands and unlocks the door. The remote signal transmission module 107 (linked with the 4G communication chip and encryption unit) synchronously sends a "legitimate unlocking" log to the server. The encryption unit hashes the operator's identity and timestamp before transmission, ensuring the log's integrity and tamper-proof nature. A battery pack 20 is installed inside the control box 201. 4. A dual power supply mode is formed by the power cord 203 and the external power supply device. When the external power is disconnected, it automatically switches to battery power. The circuit board 106 (with built-in power management module) monitors the power supply status in real time and optimizes power consumption distribution. It prioritizes the allocation of power to the 4G communication chip and encryption unit of the remote signal transmission module 107 to maintain the stability of the communication link. The control compartment 301 effectively balances the heat dissipation requirements of the internal components through the bolt-fixed sealing door 303 and heat dissipation window 304 structure, preventing the circuit board 106 (especially the 4G communication chip) from performance degradation due to high temperature. The design of the corner plate 205 and the fixing hole 206 uses bolts to firmly install the control box 201 inside the distribution box, resisting the mechanical impact during violent disassembly.The entire system achieves precise monitoring of the distribution box door lock status, rapid response to unauthorized tampering, seamless compatibility with legitimate operations, and full traceability of security incidents through the coordinated operation of physical signal detection, electronic authentication, remote communication, and intelligent logic control (relying on the signal processing link of the communication chip-encryption unit-antenna in the remote signal transmission module 107). Simultaneously, redundant power supply, shock-resistant structure, and encrypted communication ensure operational reliability and data security under extreme conditions.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pry-proof alarm device for a distribution box door lock, comprising a connecting wire (101) integrating two sets of wires, characterized in that: A control mechanism (102) is provided on one side of the connecting line (101). The connecting line (101) is fixedly installed on the proximity switch transmitter (103) and proximity switch receiver (104) respectively through two sets of wires. The proximity switch transmitter (103) is fixedly installed on the inside of the distribution box door and an NFC chip (105) is fixedly installed through another set of wires. The NFC chip (105) is fixedly installed on the side of the distribution box door away from the proximity switch transmitter (103). The proximity switch receiver (104) is fixedly installed on the inside of the distribution box and is axially opposed to the proximity switch transmitter (103). The control mechanism (102) includes a circuit board (106), on which a remote signal transmission module (107) is integrated. A connecting line (101) is fixedly installed on one side of the circuit board (106). The circuit board (106) is used to process the trigger signals of the proximity switch transmitter (103) and the proximity switch receiver (104) and generate alarm commands.

2. The anti-pry alarm device for a distribution box door lock according to claim 1, characterized in that: The control mechanism (102) also includes a control box (201), a connecting line (101) runs through one side of the control box (201), and a sound-generating unit (202) is fixedly installed on the control box (201) near the point where the connecting line (101) runs through.

3. The anti-pry alarm device for a distribution box door lock according to claim 2, characterized in that: A power cord (203) is provided on the side of the control box (201) away from the sound-generating unit (202). The power cord (203) passes through the control box (201) and is fixedly installed on the battery pack (204). The end of the power cord (203) is used to connect to an external power supply device.

4. The anti-pry alarm device for a distribution box door lock according to claim 3, characterized in that: The control box (201) is fixedly mounted with corner plates (205) on the side where the power line (203) passes through and the side where the connecting line (101) passes through, respectively, by bolts. The corner plates (205) have fixing holes (206) on the side away from the control box (201).

5. The anti-pry alarm device for a distribution box door lock according to claim 4, characterized in that: The battery pack (204) is bolted inside the control compartment (301). The circuit board (106) is bolted to the side of the control compartment (301) adjacent to the battery pack (204). The control compartment (301) is located on the side of the control box (201) away from the sound-generating unit (202).

6. The anti-pry alarm device for a distribution box door lock according to claim 5, characterized in that: The control compartment (301) has a slot (302) at its opening, and a sealing door (303) is installed in the slot (302) by bolts. The sealing door (303) has a heat dissipation window (304).

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