Electrical signboard

Abstract

The utility model relates to an electrical signboard which integrates a shell, an alarm indicator lamp, a magnet, an elastic unit and a detection communication module, when the electrical signboard is used, a metal switch cabinet door is close to the magnet, and the magnet extends out of a hole in a back plate of the shell and is adsorbed on the cabinet door to drive the elastic unit to move; the state change of the elastic unit is detected by the detection communication module and is transmitted to the cloud server. If the electrical signboard is taken down, the detection communication module can also detect a state change. The cloud server judges whether misoperation occurs or not according to signals of the electrical signboard (whether the electrical signboard is adsorbed on a cabinet door of the switch cabinet by an electrical operator on duty) and terminal equipment information (whether an electrical maintainer carries out maintenance), and if misoperation occurs, an alarm signal is sent to an alarm indicator lamp in time to prompt the electrical operator on duty to stop operation (power transmission is stopped). Therefore, the electrical safety is greatly improved.

Description

Technical Field

[0001] This application relates to the field of electrical safety, and in particular to an electrical sign. Background Technology

[0002] The main function of electrical signs is to warn workers not to approach the live parts of equipment and to prohibit the switching on of certain equipment or a certain section of line, so as to avoid electric shock accidents caused by sudden power supply.

[0003] Currently, in electrical maintenance and repair work, displaying warning signs is a crucial measure to ensure work safety. Whenever closing a switch or disconnector handle that could potentially energize the work area, a sign reading "Do Not Close, People Working!" must be displayed. If people are working on the line, a sign reading "Do Not Close, People Working on the Line!" should be displayed. The display and removal of these signs must comply with the work permit regulations, and electrical personnel must not energize the equipment under maintenance before the work permit is finalized.

[0004] However, in actual operation, due to information discrepancies and other reasons, electrical duty personnel often mistakenly supply power. When duty personnel make mistakes, the existing signs do not have alarm and warning functions, which ultimately leads to serious accidents such as injuries and deaths of electrical maintenance personnel. Utility Model Content

[0005] Therefore, it is necessary to provide an electrical sign to address the aforementioned technical problems.

[0006] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0007] An electrical sign, comprising:

[0008] The housing has a cavity inside and includes a front panel and a rear panel, with a hole in the rear panel.

[0009] Alarm indicator lights are mounted on the front panel so that they can be seen from the front of the electrical sign.

[0010] The magnet has a cross-section smaller than the hole in the back panel, allowing the magnet to protrude from the hole in the back panel.

[0011] The elastic unit has one end fixedly connected to a magnet and the other end fixedly connected to the inner wall of the front panel. A detection and communication module is also provided in the cavity of the housing. The detection and communication module is electrically connected to the elastic unit and the alarm indicator light. The detection and communication module is used to detect the status of the elastic unit and transmit the signal to the cloud server and the alarm indicator light.

[0012] In one embodiment, the resilient unit of the electrical sign is a resilient contact switch, including:

[0013] The moving contact is fixedly connected to a magnet on one side, and a spring is connected to each end of the other side of the moving contact. The other end of the spring is fixed to the inner wall of the front panel.

[0014] The stationary contact is fixed to the inner wall of the front panel. When the electrical sign is not in use, the moving contact and the stationary contact are in contact, and the resilient contact switch is in the connected state. When the back panel of the electrical sign is close to metal, the moving contact and the stationary contact are not in contact, and the resilient contact switch is in the open state.

[0015] In another embodiment, the elastic element of the electrical sign is an elastic sensor, comprising:

[0016] The board has a magnet fixedly connected to one side, and a spring is connected to each end of the other side of the board. The other ends of the two springs are fixedly connected to one side of two tension sensors, respectively.

[0017] The tension sensors are fixed on the other side of the two tension sensors to the inner wall of the front panel. When the electrical sign is not in use, the tension sensors are in a stationary state. When the back panel of the electrical sign is close to the metal, the tension sensors are in an active state.

[0018] In one embodiment, an opening is provided on the front panel of the electrical sign, and an alarm indicator light is embedded in the opening on the front panel.

[0019] In one embodiment, the alarm indicator light of the electrical sign is fixed to the outer wall of the front panel.

[0020] In one embodiment, the magnet in the electrical sign cavity is a cylinder.

[0021] In one embodiment, the magnet in the electrical sign cavity is a cuboid.

[0022] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0023] The aforementioned electrical sign integrates a housing, alarm indicator light, magnet, elastic unit, and detection and communication module. When in use, the metal switchgear door is brought close to the magnet, causing the magnet to extend from a hole in the back panel of the housing and attract the switchgear door. The magnet drives the elastic unit to move, changing its state. The detection and communication module detects this change and transmits the signal to the cloud server. Similarly, when the electrical sign is removed from the switchgear door, the detection and communication module also detects the change in state.

[0024] The cloud server combines the signals received from the electrical sign (indicating whether the sign has been affixed to the switch cabinet door by the electrical staff) with information from the terminal equipment (indicating whether the electrical maintenance personnel are performing maintenance) to make a judgment. If the judgment indicates that the electrical staff has made a mistake, the cloud server promptly sends an alarm signal to the detection and communication module of the electrical sign, and then sends this signal to the alarm indicator light. The alarm indicator light flashes, prompting the electrical staff to stop the operation (stop the power supply), thereby greatly improving electrical safety. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a side view of an electrical sign in one embodiment;

[0027] Figure 2 This is a front view of an electrical sign in one embodiment;

[0028] Figure 3 This is a schematic diagram of an electrical sign structure in one embodiment, wherein (a) represents a schematic diagram of an electrical sign structure in an unused state, and (b) represents a schematic diagram of an electrical sign structure in a used state;

[0029] Figure 4 The following is a schematic diagram of the electrical sign structure in another embodiment, wherein (a) represents the electrical sign structure in an unused state, and (b) represents the electrical sign structure in a used state.

[0030] Figure label:

[0031] 1-House casing, 101-Front panel, 102-Rear panel;

[0032] 2-Alarm indicator light; 3-Magnet;

[0033] 4-Elastic unit, 401-Moving contact, 402-Spring, 403-Stationary contact, 404-Board, 405-Tension sensor. Detailed Implementation

[0034] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0036] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0037] In one embodiment, this application provides an electrical sign, the side view of which is shown below. Figure 1 As shown, the front view of the electrical sign is as follows: Figure 2 As shown, the device includes: a housing 1 with a cavity inside; the housing 1 includes a front panel 101 and a rear panel 102 with a hole in the rear panel 102; an alarm indicator light 2 mounted on the front panel 101 so that it can be seen from the front of the electrical sign; a magnet 3 with a cross-section smaller than the hole in the rear panel 102 so that it can protrude from the hole; and an elastic unit 4, one end of which is fixedly connected to the magnet 3, and the other end of which is fixedly connected to the inner wall of the front panel 101. A detection and communication module is also provided inside the cavity of the housing 1. The detection and communication module is electrically connected to the elastic unit 4 and the alarm indicator light 2, respectively. The detection and communication module is used to detect the status of the elastic unit 4 and transmit signals to the cloud server and the alarm indicator light 2.

[0038] Understandably, before performing any electrical maintenance work, such as overhauling a motor, the electrical duty personnel will issue a corresponding electrical work permit. Following the permit's requirements, they will disconnect the power supply circuit switch for the motor and attach a "Do Not Close, People Working!" sign to the switchgear door. When the sign is attached to the switchgear door, the magnet 3 inside the sign's cavity is drawn out through the hole in the back panel 102. The magnet 3 then moves the elastic unit 4, causing a change in the state of the elastic unit 4. The hole in the back panel 102 can be circular, square, or other shapes, and the magnet 3 can be a cylinder, cuboid, or other polygonal prism, as long as the cross-section of the magnet 3 is smaller than the hole in the back panel 102, allowing the magnet 3 to extend from the hole during use.

[0039] Specifically, the elastic unit 4 can use an elastic contact switch, that is, when the magnet 3 is not attracted, the elastic contact switch is in the closed state. When the magnet 3 is attracted, the magnet 3 drives the moving contact of the elastic contact switch to move, so that the moving contact and the stationary contact separate, and the elastic contact switch is in the open state. The elastic unit 4 can also use an elastic sensor, that is, when the magnet 3 is not attracted, the elastic sensor is in the stationary state. When the magnet 3 is attracted, the magnet 3 drives the spring on the elastic sensor to move. The sensor connected to the other end of the spring can sense the tension, so that the elastic sensor is in the activated state.

[0040] The detection and communication module can detect the state of the elastic unit 4. Specifically, when the elastic unit 4 is an elastic contact switch, it can determine whether the magnet 3 is attracted by detecting whether the elastic contact switch is closed or open, thereby determining whether the electrical sign is in use (the electrical sign indicating that the electrical duty personnel are prohibited from closing the circuit, that is, from supplying power, so as to avoid endangering the electrical maintenance personnel who are working); the detection and communication module can determine whether the contact switch is closed or open by measuring the resistance value of the contact switch through the detection circuit. If the resistance value is 0 (or extremely small), it means that the elastic contact switch is closed. If the resistance value increases to infinity, it means that the elastic contact switch is open.

[0041] Additionally, when the elastic unit 4 is an elastic sensor, the presence or absence of the magnet 3 can be determined by detecting whether the elastic sensor is in a stationary or active state, thus indicating whether the electrical sign is in use. The detection and communication module acquires the sensor's output signal through the detection circuit. If a zero or low voltage signal is detected, the elastic sensor is in a stationary state; if a high voltage or current signal is detected, the elastic sensor is in an active state. The detection and communication module transmits the status of the elastic element to the cloud server via a 4G / 5G network.

[0042] After the electrical duty personnel affix the electrical sign to the switchgear door, and all safety measures are in place, electrical maintenance personnel are allowed to begin work. Before starting work, the electrical personnel operate the terminal device and input the on-site work status corresponding to the electrical sign as "Work in Progress" through the intelligent management system APP. Throughout the entire work process, the on-site work status remains "Work in Progress" (indicating that the electrical maintenance personnel are performing maintenance). The terminal device transmits the work status to the cloud server via 4G / 5G network. After the work is completed, the electrical maintenance personnel operate the terminal device and input the on-site work status corresponding to the sign as "Work Completed" through the intelligent management system APP (indicating that the electrical maintenance personnel have completed the work and are no longer performing maintenance).

[0043] The cloud server combines the signals received from the electrical sign (indicating whether the sign has been attached to the switch cabinet door by the electrical staff) with information from the terminal equipment (indicating whether the electrical maintenance personnel are performing maintenance) to make a judgment. If the judgment indicates that the electrical staff has misoperated, that is, the electrical sign has been removed but the maintenance personnel are still performing maintenance, the cloud server promptly sends an alarm signal to the detection and communication module of the electrical sign. The detection and communication module then processes the signal and sends it to alarm indicator 2. Alarm indicator 2 flashes, prompting the electrical staff to stop the operation (stop the power supply). At the same time, the cloud server can also send alarm information to the terminal equipment, prompting the electrical maintenance personnel to stop working to avoid danger.

[0044] When the work is finished, the electrical duty personnel will remove the electrical sign from the switch cabinet door. If the cloud server determines that the operation is normal, the alarm indicator light 2 will not flash.

[0045] Alternatively, a hole can be made in the front panel 101 of the electrical sign to embed the alarm indicator light 2 into the hole, or the alarm indicator light 2 can be fixed to the outer wall of the front panel 101, as long as the alarm indicator light 2 can be seen from the front of the electrical sign. A voice warning module can be integrated into the cavity of the electrical sign housing 1. When a misoperation occurs, the detection and communication module simultaneously transmits signals to both the alarm indicator light 2 and the voice warning module. The alarm indicator light 2 flashes, and the voice warning module plays a warning message. This dual warning mechanism significantly improves the operator's attention and reaction speed, further enhancing the safety and reliability of electrical maintenance operations.

[0046] In one embodiment, a schematic diagram of the electrical signage structure is shown below. Figure 3 As shown, (a) represents a schematic diagram of the electrical signage in its unused state, and (b) represents a schematic diagram of the electrical signage in its used state. Figure 3 As shown in (a), the elastic unit 4 is an elastic contact switch, specifically including: a moving contact 401, one side of which is fixedly connected to a magnet 3, and two ends of the other side of the moving contact 401 are respectively connected to a spring 402, the other end of which is fixed to the inner wall of the front panel; and a stationary contact 403, which is fixed to the inner wall of the front panel. When the electrical sign is not in use, the moving contact 401 and the stationary contact 403 are in contact, and the elastic contact switch is in the connected state. Figure 3 As shown in (b), when the back panel of the electrical sign is close to the metal, the magnet 3 is attracted out. The magnet 3 drives the moving contact 401 of the elastic contact switch to move, so that the moving contact 401 and the stationary contact 403 are separated, so that the elastic contact switch is in the open state.

[0047] In another embodiment, the schematic diagram of the electrical sign structure is as follows: Figure 4 As shown, (a) represents a schematic diagram of the electrical signage in its unused state, and (b) represents a schematic diagram of the electrical signage in its used state. Figure 4 As shown in (a), the elastic unit 4 is an elastic sensor, specifically including: a plate 404, one side of which is fixedly connected to a magnet 3, and two ends of the other side of the plate 404 are respectively connected to a spring 402, the other ends of which are respectively fixedly connected to one side of two tension sensors 405; the other side of the two tension sensors 405 is fixed to the inner wall of the front panel; when the electrical sign is not in use, the tension sensors 405 are in a stationary state. Figure 4 As shown in (b), when the back panel of the electrical sign is close to the metal, the magnet 3 is attracted out. The magnet 3 drives the spring 402 on the elastic sensor to move. The tension sensor 405, which is connected to the other end of the spring 402, can sense the tension, so that the elastic sensor is in an active state.

[0048] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electrical sign, characterized in that The utility model relates to an electric signboard with alarm function, including: A shell is equipped with a cavity in the shell, and the shell includes a front panel and a back plate, and the back plate is provided with a hole; An alarm indicator is installed on the front panel, so that the alarm indicator can be observed from the front of the electric signboard; A magnet with a cross section smaller than the hole of the back plate can extend out of the hole of the back plate; One end of an elastic unit is fixedly connected with the magnet, and the other end of the elastic unit is fixedly connected with the inner wall of the front panel, and the cavity of the shell is further provided with a detection communication module, which is electrically connected with the elastic unit and the alarm indicator respectively, and the detection communication module is used for detecting the state of the elastic unit and transmitting signals to the cloud server and the alarm indicator.

2. An electrical sign according to claim 1, wherein The elastic unit is an elastic contact switch, including: A moving contact is fixedly connected with the magnet on one side, and two springs are respectively connected to the other side of the moving contact, and the other ends of the springs are fixed on the inner wall of the front panel; A stationary contact is fixed on the inner wall of the front panel; when the electric signboard is not in use, the moving contact and the stationary contact are in contact, the elastic contact switch is in a connected state, and when the back plate of the electric signboard is close to metal, the moving contact and the stationary contact are not in contact, and the elastic contact switch is in a disconnected state.

3. An electrical sign according to claim 1, wherein The elastic unit is an elastic sensor, including: A plate is fixedly connected with the magnet on one side, and two springs are respectively connected to the other side of the plate, and the other ends of the two springs are respectively fixedly connected with one side of two tension sensors; The other side of the tension sensor is fixed on the inner wall of the front panel; when the electric signboard is not in use, the tension sensor is in a static state, and when the back plate of the electric signboard is close to metal, the tension sensor is in an activated state.

4. An electrical sign according to claim 2 or 3, characterised in that, A hole is formed in the front panel, and the alarm indicator is embedded in the hole of the front panel.

5. An electrical sign according to claim 2 or 3, wherein The alarm indicator is fixed on the outer wall of the front panel.

6. An electrical sign according to claim 4, wherein The magnet is a cylinder.

7. An electrical sign according to claim 4, wherein The magnet is a cuboid.

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