NFC intelligent control module for grounding device

Abstract

The utility model provides an NFC intelligent control module for a grounding device, relates to the field of electrical equipment maintenance grounding devices, and solves the problem that there is no latch-up protection mechanism and the limitation of a mandatory operation sequence in the process of assembling and disassembling a grounding wire. Wherein the module is arranged on a grounding device arranged at a grounding point of electrical equipment; the module comprises a position switch, a first electromagnetic lock and an NFC recognition controller. The position switch and the first electromagnetic lock are both arranged at the grounding end, and the first electromagnetic lock is connected with the position switch and the NFC recognition controller; the signal state of the position switch is matched with the installation state of the grounding end of the grounding wire, and the NFC identification controller is provided with an NFC identification card matched with the NFC identification controller in an induction mode. The module further comprises a second electromagnetic lock arranged at the conductor end of the grounding wire. According to the utility model, based on the NFC induction communication technology, the assembly and disassembly of the grounding wire are safer and more standard, and the life safety of on-site operators and the property safety of electrical equipment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of electrical equipment maintenance grounding devices, is applied in the process of grounding wire installation and removal, and specifically relates to an NFC intelligent control module for the grounding device. Background Art

[0002] In the operation and maintenance of modern power systems, regular inspection and maintenance of electrical equipment is a key link to ensure the safe and stable operation of the system. However, this process is accompanied by safety challenges that cannot be ignored, especially when electrical equipment needs to be shut down for inspection and maintenance. How to effectively prevent electric shock accidents caused by unexpected calls or induced charges has become a technical problem that needs to be solved urgently. In traditional solutions, grounding devices play a vital role. They significantly reduce the potential dangers of the operation process by directing the residual charge of the maintenance equipment to the ground. Typical grounding devices usually include basic components such as grounding clamps, grounding wires, and grounding terminals. Although these components can basically meet the grounding requirements, they have exposed a series of operational safety and efficiency issues in actual applications.

[0003] The primary problem is the lack of an effective locking mechanism for installation and removal. Existing grounding device designs do not integrate intelligent or mechanical locking functions, which means that anyone can easily install or remove the grounding wire at any time with simple tools (such as a wrench) without specific authorization or following specific procedures. This open operation mode greatly increases the risk of misoperation, which may lead to the incorrect removal of the grounding wire before the equipment is completely powered off or reaches a safe state, resulting in serious personal injury accidents.

[0004] Secondly, under existing technical conditions, it is difficult to enforce the correct grounding wire installation sequence from a technical perspective. In theory, the correct operating procedure should be: when installing, first fix the grounding terminal, then connect the conductor terminal (i.e., the grounding wire clamp); when removing, it is necessary to reverse the order, first disconnect the conductor terminal, and then release the grounding terminal connection. However, in actual operation, due to the lack of mandatory technical constraints, operators may take the opposite operating sequence due to negligence or misjudgment in an emergency situation. In this case, it is very easy to cause electric shock accidents, which directly threaten the lives of on-site personnel.

[0005] In summary, the current application status of grounding devices in power systems highlights their deficiencies in safety and operational norms, especially the lack of locking function and the inability to ensure the correct operating sequence. Therefore, there is an urgent need for an innovative grounding device or auxiliary functional module to integrate an intelligent or mechanical locking mechanism to ensure that the ground wire can be installed and removed only under predetermined safety conditions, and to enforce the correct operating sequence through technical means, fundamentally eliminating the risk of misoperation and providing a more solid safety barrier for power system maintenance operations. Utility Model Content

[0006] Based on the current status of the background technology, in order to solve the limitation problem of no locking protection mechanism and mandatory operation sequence in the installation and removal of the grounding wire, the utility model proposes an NFC intelligent control module for the grounding device. Based on NFC inductive communication technology and with the electromagnetic lock locking function, the utility model can smoothly achieve the effects of operation locking, identity recognition and standardized installation and removal sequence on the grounding wire, thereby making the installation and removal of the grounding wire safer and more standardized, ensuring the life safety of on-site operators and the property safety of electrical equipment.

[0007] The utility model adopts the following technical solutions to achieve the purpose:

[0008] A NFC intelligent control module for a grounding device, wherein the module is installed on a grounding device arranged at a grounding point of an electrical device, wherein the grounding device comprises a grounding wire; the module comprises a position switch, a first electromagnetic lock and an NFC identification controller; the position switch and the first electromagnetic lock are both arranged at a grounding end of the grounding wire, and the first electromagnetic lock is respectively connected to the position switch and the NFC identification controller; wherein a signal state of the position switch matches an installation state of the grounding end of the grounding wire, and the NFC identification controller has an NFC identification card that is inductively matched therewith.

[0009] Furthermore, it also includes a second electromagnetic lock; the second electromagnetic lock is arranged at the conductor end of the grounding wire, and the second electromagnetic lock is connected to the position switch; the conductor end of the grounding wire is connected to the electrical equipment.

[0010] Specifically, the signal state of the position switch includes a closed signal and an open signal, the closed signal corresponds to the installed state of the matching ground terminal, and the open signal corresponds to the uninstalled state of the matching ground terminal; the lock core state of the second electromagnetic lock matches the signal state of the position switch, the closed signal corresponds to the released state of the matching second electromagnetic lock, and the open signal corresponds to the locked state of the matching second electromagnetic lock.

[0011] Specifically, it also includes a power supply component; the power supply component is connected to the first electromagnetic lock, the second electromagnetic lock and the NFC identification controller respectively.

[0012] Preferably, the power supply assembly includes a detachable battery and / or a solar panel.

[0013] Furthermore, the NFC identification controller is built with a storage unit, which stores the electrical equipment information corresponding to the grounding device where the NFC identification controller is located; the NFC identification card is embedded with a unique serial number, which matches the corresponding electrical equipment information.

[0014] Preferably, the NFC identification controller also has a built-in encryption key identification component, and the NFC identification card also has embedded encryption key information.

[0015] Furthermore, the first electromagnetic lock has a release setting input terminal and a lock setting input terminal; the identification signal output terminal of the NFC identification controller is connected to the release setting input terminal, and the signal change output terminal of the position switch is connected to the lock setting input terminal.

[0016] In summary, due to the adoption of this technical solution, the beneficial effects of the utility model are as follows:

[0017] 1. Enhanced safety and standardization: The module of this utility model introduces NFC technology to realize the identification function of the grounding wire, ensure the uniqueness and traceability of each grounding wire, fundamentally prevent the use of unauthorized or wrong grounding wires, and greatly improve the safety level of the operation. At the same time, by enforcing the standardized installation and disassembly sequence, it effectively avoids safety accidents caused by improper operation, and ensures the life safety of on-site operators and the normal operation of electrical equipment.

[0018] 2. Locking protection mechanism: The module-integrated electromagnetic lock of the utility model is an important functional feature. It allows the installation and removal of the grounding wire when the predetermined conditions are met, thereby providing physical locking protection, effectively preventing the accidental removal of the grounding wire due to misoperation, ensuring continuous grounding protection, and further enhancing the safety of the system.

[0019] 3. Intelligent management: Through the reading and identification of NFC inductive communication, the corresponding components in the module of the utility model can be added and matched with data recording and remote transmission function accessories, so as to facilitate the remote operation and maintenance monitoring center in the power system to conduct real-time monitoring and historical record query on the use of grounding wires; while meeting the local safety needs of on-site operators, it further provides data support for safety management decisions, thereby realizing the informationization and intelligent management of grounding operations and improving work efficiency and management level. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structural connection of the NFC intelligent control module of the present utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1 As shown, an NFC intelligent control module for a grounding device is installed on a grounding device arranged at a grounding point of an electrical device, and the grounding device includes a grounding wire. The module includes a position switch, a first electromagnetic lock, a second electromagnetic lock, and an NFC identification controller; the position switch and the first electromagnetic lock are both arranged at the grounding end of the grounding wire, and the first electromagnetic lock is respectively connected to the position switch and the NFC identification controller; the second electromagnetic lock is arranged at the conductor end of the grounding wire (such as a grounding wire clamp), and the second electromagnetic lock is connected to the position switch; and the conductor end of the grounding wire is connected to the electrical device.

[0025] The signal state of the position switch matches the installation state of the grounding terminal of the grounding wire, and the NFC identification controller has an NFC identification card that is inductively matched therewith.

[0026] First of all, it should be noted that the lock core states of the first electromagnetic lock and the second electromagnetic lock both include a released state and a locked state. In the default power-on mode and when the power is off, the lock core states of both are in a locked state; when in a locked state, the electromagnetic lock will prevent the installation or removal and connection of the corresponding end (ground end or conductor end); only when the electromagnetic lock is in a released state can the corresponding end successfully complete the installation or removal and connection operations. This type of locking mechanism is the key point for this embodiment to achieve its corresponding effect.

[0027] This embodiment does not limit the specific structure of the electromagnetic lock and the corresponding end. Generally, the mechanical structure inside the electromagnetic lock (such as a spring or other form of retaining mechanism) will keep the lock core in a locked state, preventing the universal connector from being plugged in and out, etc. When released, the connector can be plugged in and out and the components can be moved. Therefore, the design can be selected according to the actual needs and specifications of the grounding device, and will not be repeated here.

[0028] In this embodiment, the signal state of the position switch includes a closed signal and an open signal, the closed signal corresponds to the installed state of the matching ground terminal, and the open signal corresponds to the uninstalled state of the matching ground terminal; the lock core state of the second electromagnetic lock matches the signal state of the position switch, the closed signal corresponds to the released state of the matching second electromagnetic lock, and the open signal corresponds to the locked state of the matching second electromagnetic lock.

[0029] The position switch can be a passive position switch. When the grounding end of the grounding wire is installed in place, the contacts of the passive position switch are matched and closed. The main function of the position switch in the module is to detect whether the grounding wire has been correctly installed or removed, so its function is realized by a passive position switch. As a passive device, it can work without relying on an external power supply, including common mechanical micro switches, proximity switches and Hall effect switches, which can be used to sense state changes and transmit electrical signals.

[0030] The passive position switch in the module of this embodiment is designed to close or open the circuit through physical contact, thereby triggering a signal; it not only simplifies the circuit and reduces power consumption, but also improves the reliability and safety of the normal operation of the module. Passive devices have a lower failure rate than active devices and are not easily affected by electromagnetic interference.

[0031] In this embodiment, Figure 1 As shown, the module also includes a power supply component; the power supply component is connected to the first electromagnetic lock, the second electromagnetic lock and the NFC identification controller respectively. The power supply component includes a detachable battery and / or a solar panel. This configuration can improve the independence and endurance of the module, thereby ensuring that the module can still work normally for a long time without an external power supply.

[0032] In this embodiment, the NFC identification controller is built with a storage unit, and the storage unit stores the electrical equipment information corresponding to the grounding device where the NFC identification controller is located; the NFC identification card is embedded with a unique serial number, and the unique serial number matches the corresponding electrical equipment information. This feature is the key to ensuring the correct identification of the identity of the grounding wire, avoiding the selection or connection of the wrong grounding wire, and failing to effectively ground the electrical equipment actually under repair. Especially in the case where there is a certain distance between the electrical equipment and the grounding point, if the on-site operator installs the wrong grounding wire at the grounding point (for example, the grounding wire actually corresponds to the remaining electrical equipment that is not under repair), and returns to the electrical equipment to be repaired and connects the conductor end corresponding to the original correct grounding wire, there will be a serious safety hazard of not being grounded.

[0033] Each NFC identification card has a unique serial number embedded in it, namely the UID. This UID is set when the NFC identification card leaves the factory and cannot be modified. At the remote operation and maintenance monitoring center of the power system, it can be matched with the corresponding electrical equipment information. In this way, only when the NFC identification controller of the corresponding grounding device reads the preset matching UID, will the corresponding electromagnetic lock be operated.

[0034] As a preferred embodiment of this embodiment, the NFC identification controller also has a built-in encryption key identification component, and the NFC identification card also has embedded encryption key information. The encryption key information can be given or updated by the remote operation and maintenance monitoring center before each operation and maintenance task. After the encryption key identification component calculates whether it is correct, it outputs the corresponding signal to control the electromagnetic lock. This means that even if a copied or forged NFC identification card with the same UID appears, the electromagnetic lock cannot be operated without the correct key, thereby further preventing the grounding wire in use from being accidentally removed. The NFC identification card is carried by the on-site operator performing the current operation and maintenance task to ensure that only he or she has authorization.

[0035] In this embodiment, the first electromagnetic lock has a release setting input terminal and a lock setting input terminal; the identification signal output terminal of the NFC identification controller is connected to the release setting input terminal, and the signal change output terminal of the position switch is connected to the lock setting input terminal. When the on-site operator installs the grounding end of the grounding wire, the signal state of the position switch changes. This change in signal state (i.e., from open to closed, with a jump edge for the signal output) will cause the first electromagnetic lock to be locked (because the electromagnetic lock is in a released state when installed). Then a certain delay time can be preset, and the first electromagnetic lock will automatically change to a locked state. Before the on-site operator confirms the NFC identification induction, the grounding end of the grounding wire cannot be removed, thereby preventing the grounding wire from being accidentally operated or removed by irrelevant personnel on site, and significantly improving the safety, efficiency and intelligence level of operation and maintenance tasks.

[0036] Example 2

[0037] Based on Example 1, this example introduces an NFC intelligent control method for a grounding device to illustrate the effect of the NFC intelligent control module in preventing the grounding wire from being removed by mistake and enforcing a standardized installation and removal sequence.

[0038] In this embodiment, the NFC intelligent control module in Embodiment 1 is first installed on the grounding device of the electrical equipment. When the electrical equipment needs to be operated or repaired, the following steps are used to complete the installation and control of the grounding wire:

[0039] S11. The remote operation and maintenance monitoring center determines the electrical equipment information, selects the corresponding NFC identification card and sends it to the on-site operator; the on-site operator arrives at the grounding point of the electrical equipment;

[0040] S12, turning on the power switch of the power supply assembly itself, the first electromagnetic lock, the second electromagnetic lock and the NFC identification controller are powered on and enter the running state; the first electromagnetic lock and the second electromagnetic lock are both in the locked state;

[0041] S13, placing the NFC identification card close to the sensing position of the NFC identification controller, the NFC identification controller outputs an identification signal, the first electromagnetic lock changes to a released state, and the on-site operator installs the grounding end of the grounding wire;

[0042] S14, after the grounding end of the grounding wire is installed, the signal state of the position switch changes from an open signal to a closed signal; the change in the signal state is input to the first electromagnetic lock, and after a preset delay time, the first electromagnetic lock changes to a locked state;

[0043] S15. When the signal state of the position switch changes from an open signal to a closed signal and continues to output, the second electromagnetic lock changes to a released state, and the on-site operator connects the conductor end of the grounding wire to the electrical equipment, completes the installation of the grounding wire, and starts to perform operation or maintenance or repair operations on the electrical equipment.

[0044] Then, when the operation or maintenance of the electrical equipment is completed, the following steps are used to complete the removal and control of the grounding wire:

[0045] S21. On-site operators disconnect the electrical equipment from the conductor end of the grounding wire;

[0046] S22, placing the NFC identification card close to the sensing position of the NFC identification controller, the NFC identification controller outputs an identification signal, the first electromagnetic lock changes to a released state, and the on-site operator removes the grounding end of the grounding wire;

[0047] S23, after the grounding end of the grounding wire is removed, the signal state of the position switch changes from a closed signal to an open signal; the change in the signal state is input to the first electromagnetic lock, and after a preset delay time, the first electromagnetic lock changes to a locked state;

[0048] S24, when the signal state of the position switch changes from a closed signal to an open signal and continues to output, the second electromagnetic lock changes to a locked state;

[0049] S25. The on-site operator turns off the power switch of the power supply assembly, stores the grounding wire and its accessories, completes the removal of the grounding wire, and returns the NFC identification card to the remote operation and maintenance monitoring center.

[0050] In this embodiment, the effect of the above method on preventing accidental disassembly is manifested in that when the grounding end of the grounding wire is installed, the first electromagnetic lock will enter a locked state, and the grounding end cannot be removed from the grounding point to disconnect the reliable connection with the earth; even if the on-site operator performs operation and maintenance inspection operations at the electrical equipment at a certain distance from the grounding point, it can prevent unrelated personnel on site from removing the grounding wire currently in use, because the release of the first electromagnetic lock is determined by the NFC identification card carried by the on-site operator. At this time, even if others turn off the power of the module, the first electromagnetic lock is in a locked state, and the conductor end corresponding to the second electromagnetic lock is located at the electrical equipment where the on-site operator is located, and has been connected to the electrical equipment, which will not affect the operation and maintenance safety of the on-site operator.

[0051] Normally, as long as the grounding end of the grounding wire is correctly installed, the second electromagnetic lock will be in a released state, making it convenient for on-site operators to connect or disconnect the conductor end it controls with the electrical equipment. The second electromagnetic lock is the key to cooperating with the other components to achieve mandatory standardized installation and disassembly sequences. During the installation of the grounding wire, if you want to connect the conductor end first and then install the grounding end, you will find that because the grounding end is not correctly installed, the signal state of the position switch is a disconnect signal, and the second electromagnetic lock is in a locked state, and its corresponding conductor end cannot be connected to the electrical equipment; only after the grounding end is correctly installed first, the second electromagnetic lock will become released, and its conductor end can be connected to the electrical equipment.

[0052] Similarly, during the removal of the grounding wire, when the on-site operator completes the specific operations of operation and maintenance and wants to remove the grounding wire, if he first releases the first electromagnetic lock through NFC sensing identification and removes the grounding end, the signal state becomes disconnected due to the action of the position switch. At this time, the second electromagnetic lock corresponding to the conductor end still connected to the electrical equipment will become locked, and the conductor end cannot be disconnected from the electrical equipment. This reminds the on-site operator that the sequence is wrong and he should immediately restore the installation of the grounding end, and then return to the electrical equipment to disconnect the conductor end on the electrical equipment before continuing to remove the grounding end.

[0053] Generally, for maintenance and repair operations performed on electrical equipment at a certain distance from the grounding point, after completing the corresponding operations at the electrical equipment, the on-site operators usually disconnect the conductor end on the electrical equipment before going to the grounding point to remove the grounding wire. After the grounding wire is removed, the first electromagnetic lock also changes to a locked state. After the on-site operator turns off the power and puts it away, he can return to the remote maintenance monitoring center to report the maintenance and repair results and return the NFC identification card. Since the signal state of the position switch changes when the grounding wire is removed, the first electromagnetic lock and the second electromagnetic lock are eventually locked accordingly, waiting for the next maintenance and repair task while preventing misuse.

[0054] In summary, the NFC intelligent control circuit module of the utility model not only solves the problems of irregular grounding wire operation and lack of anti-mistaken removal function in the prior art, but also significantly improves the safety, efficiency and intelligence level of operation and maintenance operations through technological innovation, which is of great value in promoting the improvement of safety production standards in the power industry.

Claims

1. An NFC intelligent control module for a grounding device, characterized in that: The module is installed on a grounding device arranged at a grounding point of the electrical equipment, and the grounding device includes a grounding wire; the module includes a position switch, a first electromagnetic lock and an NFC identification controller; the position switch and the first electromagnetic lock are both arranged at the grounding end of the grounding wire, and the first electromagnetic lock is respectively connected to the position switch and the NFC identification controller; wherein the signal state of the position switch matches the installation state of the grounding end of the grounding wire, and the NFC identification controller has an NFC identification card that is inductively matched therewith.

2. The NFC intelligent control module for a grounding device according to claim 1, characterized in that: It also includes a second electromagnetic lock; the second electromagnetic lock is arranged at the conductor end of the grounding wire, and the second electromagnetic lock is connected to the position switch; the conductor end of the grounding wire is connected to the electrical equipment.

3. The NFC intelligent control module for a grounding device according to claim 2, characterized in that: The signal state of the position switch includes a closed signal and an open signal, the closed signal corresponds to the installed state of the matching ground terminal, and the open signal corresponds to the uninstalled state of the matching ground terminal; the lock core state of the second electromagnetic lock matches the signal state of the position switch, the closed signal corresponds to the released state of the matching second electromagnetic lock, and the open signal corresponds to the locked state of the matching second electromagnetic lock.

4. The NFC intelligent control module for a grounding device according to claim 2, characterized in that: It also includes a power supply component; the power supply component is connected to the first electromagnetic lock, the second electromagnetic lock and the NFC identification controller respectively.

5. The NFC intelligent control module for a grounding device according to claim 4, characterized in that: The power supply assembly includes a removable battery and / or a solar panel.

6. The NFC intelligent control module for a grounding device according to claim 4, characterized in that: The NFC identification controller is equipped with a storage unit, which stores the electrical equipment information corresponding to the grounding device where the NFC identification controller is located; the NFC identification card is embedded with a unique serial number, which matches the corresponding electrical equipment information.

7. The NFC intelligent control module for a grounding device according to claim 6, characterized in that: The NFC identification controller also has a built-in encryption key identification component, and the NFC identification card also has embedded encryption key information.

8. The NFC intelligent control module for a grounding device according to claim 6, characterized in that: The first electromagnetic lock has a release setting input terminal and a lock setting input terminal; the identification signal output terminal of the NFC identification controller is connected to the release setting input terminal, and the signal change output terminal of the position switch is connected to the lock setting input terminal.

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