Intelligent anti-moving warning board
By using a magnetic induction switch in conjunction with a permanent magnet, the system detects whether the warning sign has been moved and triggers an audible and visual alarm and a remote synchronization unit. This solves the safety risks caused by the easy movement of traditional warning signs and addresses the issue of remote monitoring linkage, enabling real-time monitoring and remote management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional warning signs lack active protection functions, are easily moved and cannot be detected in time, leading to an increased risk of safety accidents, and cannot be linked with remote monitoring systems.
The system uses a magnetic induction switch in conjunction with a permanent magnet. The magnetic field triggers the normally closed magnetic induction switch to detect whether the warning sign has been moved, and it also links the sound and light alarm, voice module and remote synchronization unit to achieve real-time monitoring and alarm.
It enables real-time monitoring and alarm of warning sign status, improves safety and response efficiency, reduces false alarm rate, and supports remote monitoring and management.
Smart Images

Figure CN224153018U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydropower station maintenance and safety protection technology. Specifically, it relates to an intelligent anti-movement warning sign. Background Technology
[0002] During the maintenance of hydropower station units, traditional warning signs are used to alert maintenance personnel to the equipment under maintenance and in operation. However, traditional warning signs are usually fixed and lack active safety features. If a traditional warning sign is moved, it is not easily noticed immediately, posing risks to maintenance personnel such as walking into the wrong area, disrupting the normal operation of equipment, and electric shock.
[0003] Lacking real-time monitoring capabilities, traditional warning signs cannot trigger an alarm when moved, requiring manual inspection and posing a risk of delayed response. This could lead to maintenance personnel accidentally entering dangerous areas, increasing the risk of accidents. Furthermore, traditional warning signs cannot be integrated with remote monitoring systems, making it impossible to monitor their status in real time.
[0004] Existing intelligent warning devices mostly use infrared or radar sensing, which are easily affected by environmental interference and have a high false alarm rate. Utility Model Content
[0005] The purpose of this utility model is to provide an intelligent anti-movement warning sign that addresses the aforementioned shortcomings. This solves the problems of traditional warning signs in the prior art, which fail to trigger an alarm when moved, rely on manual inspections for detection, suffer from response delays, and cannot be integrated with remote monitoring systems. To achieve the above objective, this utility model provides the following technical solution:
[0006] An intelligent anti-movement warning sign includes a warning unit, an anti-movement unit, an alarm unit, and a remote synchronization unit; the anti-movement unit and the alarm unit are electrically connected; the anti-movement unit triggers the alarm unit to sound an alarm after detecting that the warning unit has been moved; the remote synchronization unit is used to remotely monitor the status of the warning unit.
[0007] Furthermore, the warning unit includes a warning sign and a supporting base plate; one side of the supporting base plate is connected to the bottom of the warning sign; the warning sign is used to serve a warning function.
[0008] Furthermore, the anti-movement unit includes a permanent magnet and a magnetic induction switch; the magnetic induction switch is located at the rear end of the supporting base plate; the permanent magnet is located under the ground where the warning effect is required; the supporting base plate is placed on the ground where the warning effect is required, and when the permanent magnet approaches the magnetic induction switch, the magnetic induction switch is triggered to disconnect.
[0009] Furthermore, the alarm unit includes a controller and an audible and visual alarm; the controller is electrically connected to the audible and visual alarm; the magnetic induction switch is electrically connected to the controller; when the magnetic induction switch is closed, it triggers the controller, which then controls the audible and visual alarm to sound.
[0010] Furthermore, the alarm unit also includes a voice module; when the magnetic induction switch is closed, it triggers the controller, which then controls the voice module to emit a prompt sound.
[0011] Furthermore, the prompts of the voice module can be customized through programming.
[0012] Furthermore, when the support base is placed on the ground where a warning effect is required, the distance between the magnetic induction switch and the permanent magnet is ≤3mm to ensure that the magnetic field strength meets the standard.
[0013] Furthermore, the remote synchronization unit includes a WiFi module; the WiFi module is electrically connected to the controller.
[0014] Furthermore, it also includes a power module; the power module supplies power to the controller, the audible and visual alarm, the voice module, and the WiFi module.
[0015] Furthermore, warning signs are placed on the ground where the permanent magnet is placed and at the location of the magnetic induction switch to remind people who have accidentally moved the switch to align it with the permanent magnet and put it back in its original position.
[0016] The beneficial effects of this utility model are:
[0017] 1. Coordination of Magnetic Induction Switch and Permanent Magnet: A non-contact triggering mechanism using a normally closed magnetic induction switch and a pre-embedded permanent magnet. The magnetic induction switch detects whether the warning sign has been moved, and the permanent magnet provides the magnetic field triggering condition to achieve real-time monitoring of the warning sign's status.
[0018] 2. Multi-module linkage alarm mechanism: Multi-module linkage control logic. The audible and visual alarm, voice module, and Wi-Fi module activate simultaneously after the magnetic induction switch is triggered, forming an all-around warning and improving the warning effect.
[0019] 3. Remote monitoring function: It can be linked with a mobile APP through a Wi-Fi module to realize remote monitoring, so that managers can understand the status of warning signs in a timely manner. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is the control logic diagram of this utility model;
[0022] In the attached diagram: 1-Permanent magnet, 2-Magnetic induction switch, 3-Speaker, 4-Audio and visual alarm, 5-Housing, 6-Warning sign. Detailed Implementation
[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. 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 claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, 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 utility model based on the specific circumstances.
[0025] Example:
[0026] See attached Figures 1-2 This embodiment provides an intelligent anti-movement warning sign, including a warning unit that can display warning messages or working status via handwritten warnings or an LED display screen; an anti-movement unit that detects whether the warning unit has been moved and removed from its original position; an alarm unit that receives feedback from the anti-movement unit and, when the warning unit is moved, issues an audible and visual alarm to serve as a reminder; and a remote synchronization unit that transmits alarm information wirelessly, allowing for real-time remote monitoring of the warning unit's status via a mobile app.
[0027] The specific warning unit includes a warning sign 6 and a supporting base plate. One side of the supporting base plate is integrally connected to the bottom of the warning sign 6. The angle between the warning sign 6 and the supporting base plate is an acute angle, preferably about 75 degrees. The warning sign 6 placed on the ground faces diagonally upward, making it easy for staff to see the warning sign 6 intuitively.
[0028] The specific anti-movement unit includes a permanent magnet 1 and a magnetic induction switch 2. The magnetic induction switch 2 is a normally closed type. Its working principle is to use the force of a magnetic field on a reed switch to open and close the contacts. When there is no magnetic field, the reed inside the reed switch is closed, the contacts are connected, and the circuit is conductive. When a magnetic field is applied to the reed switch, the reed experiences a force that separates the contacts, breaking the circuit. The permanent magnet 1 generates a magnetic field that acts on the normally closed magnetic induction switch 2. The magnetic induction switch 2 is located at the rear end of the support base plate. The permanent magnet 1 is embedded in the ground under each work area that needs to be warned, and the upper surface of the permanent magnet 1 is at the same level as the ground. The magnetic induction switch 2 is connected to the alarm unit and the remote synchronization unit to form a circuit. When the warning sign 6 is placed in the designated position, the magnetic induction switch 2 on the support base comes into contact with the permanent magnet 1. The magnetic field generated by the permanent magnet 1 acts on the magnetic induction switch 2, the circuit is broken, and the alarm unit and the remote synchronization unit do not work. When it is moved, the magnetic induction switch 2 is disconnected from the permanent magnet 1, the circuit is connected, the alarm unit and the remote synchronization unit work, reminding the operator to put it back in its original position, which serves as an active alarm, so that it can be discovered as soon as possible and measures can be taken in time.
[0029] The specific alarm unit includes a controller and an audible and visual alarm. A housing 5 is mounted on the supporting base plate, housing the controller, and also houses a power module to power the entire device. The magnetic induction switch 2 is connected to the power supply and controller inside the housing 5 via a waterproof cable, acting as a trigger source and outputting high and low level signals to the controller's digital input pins. The controller is electrically connected to the audible and visual alarm, controlling it to sound an alarm. The audible and visual alarm is a combination of a high-brightness LED and a buzzer to provide on-site warning. The alarm unit also includes a voice module, including a speaker 3 integrated into the housing 5. An opening on one side of the housing 5 transmits the voice from the speaker 3. The speaker 3 can be preset with different voice prompts, and the controller also controls the speaker 3 to play warning messages.
[0030] The specific remote synchronization module includes a WiFi module, which is integrated into the housing 5 and electrically connected to the controller. The controller controls the output signal, and a mobile app is pre-set to receive the signal emitted by the WiFi module. The mobile app displays information on whether the warning sign 6 has been moved, and the status of the warning sign 6 can be monitored remotely in real time.
[0031] The power module is equipped with a switch. When turned on, it supplies power to the controller, the audible and visual alarm 4, the speaker 3, and the WiFi module. When the warning sign 6 is not working, the switch on the power module is turned off. When the warning sign 6 is placed on the permanent magnet 1, and the distance between the magnetic induction switch 2 and the permanent magnet 1 is ≤3mm to ensure that the magnetic field strength meets the standard, the switch on the power module is turned on again. At this time, the magnetic induction switch 2 is in the off state, and the controller is still not working. Only when the warning sign 6 is moved will the magnetic induction switch 2 be turned on, the entire circuit be turned on, the controller will work, and control the audible and visual alarm 4, the speaker 3, and the WiFi module to work simultaneously.
[0032] Both the ground where the embedded permanent magnet 1 is located and the location of the magnetic induction switch 2 are marked with prompts. These prompts can help people who accidentally touch the magnet to return the warning sign 6 to its original position and place the magnetic induction switch 2 in the position of the permanent magnet 1, in accordance with the prompts on the magnetic induction switch 2 and the permanent magnet 1.
[0033] This invention features real-time performance: the trigger response time of the magnetic induction switch 2 is less than 0.5 seconds, which significantly improves efficiency compared to traditional manual inspection; reliability: the normally closed magnetic induction switch 2 has a low false alarm rate and is suitable for complex industrial environments; and multi-level protection: the local sound and light alarm 4, voice prompts, and remote APP notifications work together to meet the safety requirements of smart hydropower stations.
[0034] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. An intelligent anti-removal warning sign, characterized in that: It includes a warning unit, an anti-movement unit, an alarm unit, and a remote synchronization unit; the anti-movement unit and the alarm unit are electrically connected; the anti-movement unit triggers the alarm unit to sound an alarm after detecting that the warning unit has been moved; the remote synchronization unit is used to remotely monitor the status of the warning unit.
2. The intelligent anti-removal warning sign according to claim 1, characterized in that: The warning unit includes a warning sign (6) and a supporting base plate; one side of the supporting base plate is connected to the bottom of the warning sign (6); the warning sign (6) is used to serve as a warning.
3. The intelligent anti-removal warning sign according to claim 2, characterized in that: The anti-movement unit includes a permanent magnet (1) and a magnetic induction switch (2); the magnetic induction switch (2) is located at the rear end of the supporting base plate; the permanent magnet (1) is located under the ground where the warning effect is required; the supporting base plate is placed on the ground where the warning effect is required, and the permanent magnet (1) approaches the magnetic induction switch (2), triggering the magnetic induction switch (2) to disconnect.
4. The intelligent anti-removal warning sign according to claim 3, characterized in that: The alarm unit includes a controller and an audible and visual alarm; the controller is electrically connected to the audible and visual alarm (4); the magnetic induction switch (2) is electrically connected to the controller; when the magnetic induction switch (2) is closed, it triggers the controller, which then controls the audible and visual alarm (4) to sound an alarm.
5. The intelligent anti-removal warning sign according to claim 4, characterized in that: The alarm unit also includes a voice module; when the magnetic induction switch (2) is closed, it triggers the controller, which controls the voice module to emit a prompt sound.
6. The intelligent anti-moving warning sign according to claim 5, characterized in that: The prompts from the voice module can be customized via a program.
7. The intelligent anti-removal warning sign according to claim 3, characterized in that: When the support base is placed on the ground where a warning is required, the distance between the magnetic induction switch (2) and the permanent magnet (1) is ≤3mm to ensure that the magnetic field strength meets the standard.
8. The intelligent anti-removal warning sign according to claim 5, characterized in that: The remote synchronization unit includes a WiFi module; the WiFi module is electrically connected to the controller.
9. The intelligent tamper-evident sign of claim 8, wherein: It also includes a power module; the power module supplies power to the controller, the audible and visual alarm (4), the voice module and the WiFi module.
10. The intelligent anti-removal warning sign according to claim 3, characterized in that: There are prompts on the ground where the permanent magnet (1) is placed and at the location of the magnetic induction switch (2) to remind people who have moved it to align the magnetic induction switch (2) with the permanent magnet (1) and put it back in place.