Magnetic shielding accumulated water depth measuring device for subway tunnel

Abstract

The utility model discloses a magnetic shielding ponding depth measuring device for a subway tunnel, and belongs to the technical field of magnetic shielding ponding monitoring devices. The accumulated water monitoring device comprises a control module; the control module is mounted in the shell; the inductor is located in the shell; and the plating layer is coated on the periphery of the shell, and the plating layer is a metal plating layer, so that the shell forms a Faraday cage structure. According to the accumulated water depth measuring device, the metal coating is arranged on the outer side of the shell, so that the shell forms a Faraday cage, electromagnetic waves are ensured to be shielded, the inductor and the control module are enabled not to be interfered by a magnetic field, normal operation can be realized, accurate data can be acquired, and the data are transmitted to a control center; real-time monitoring of the depth of accumulated water in the subway tunnel is achieved, and the accuracy of monitoring data of the depth of accumulated water in the subway tunnel is improved. When the accumulated water depth reaches an alarm value, an alarm is given to remind a worker to drain accumulated water in the underground tunnel as soon as possible, and the influence on the operation safety of the subway is avoided.

Description

Technical Field

[0001] This utility model relates to a magnetic shielding water accumulation depth measuring device for subway tunnels, belonging to the technical field of magnetic shielding water accumulation monitoring devices. Background Technology

[0002] With the rapid development of urban transportation, subways are playing an increasingly important role in urban transportation. Subways are electrified railways, and their tunnels contain not only subway tracks but also electrical cables, controllers, and other components. Because subway tunnels are lower than station platforms, water easily accumulates in the tunnels during rain. This water needs to be drained in a timely manner; otherwise, it will not only affect the overall service life but may also cause major accidents and significant property damage in severe cases.

[0003] Chinese patent document CN202338359U discloses an automatic monitoring device for water accumulation in reserved foundation pits of subway tunnels. Although it can automatically monitor the water accumulation in reserved foundation pits of subway tunnels, the large current flowing through the cables in the subway tunnels, and the alternating current inevitably generating an alternating electromagnetic field in the surrounding space, will affect the electronic devices within a certain range, thereby affecting the normal operation of the electronic devices, causing them to malfunction or become abnormal, resulting in inaccurate monitoring data. Utility Model Content

[0004] This invention provides a magnetically shielded water depth measuring device for subway tunnels, which solves the problem that when cables in subway tunnels carry large currents, the alternating current generates an alternating electromagnetic field in the surrounding space. This electromagnetic field acts on electronic devices, causing them to malfunction or malfunction, resulting in inaccurate monitoring data.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a magnetically shielded water depth measuring device for subway tunnels, including...

[0007] Control module;

[0008] The control module is installed inside the housing.

[0009] Sensor, the sensor being located within the housing;

[0010] A coating, which covers the outer periphery of the shell, is a metallic coating, thereby forming a Faraday cage structure in the shell.

[0011] In one embodiment of this invention, a water inlet is included, located at the end of the housing furthest from the control module. Water accumulated in the subway tunnel can flow into the housing through the water inlet, making the water level inside the housing the same as the water level in the subway tunnel.

[0012] In one embodiment of this utility model, the shell is a cuboid structure with an internal cavity.

[0013] In one embodiment of this invention, the control module includes a communication module and a signal processing module. The communication module is connected to the signal processing module, and the signal processing module is connected to the sensor. The signal processing module receives the electrical signal fed back from the sensor, processes and converts it, and then transmits it to the control center via the communication module. The control center converts the received information into water depth for display. When the water depth reaches a warning value, an alarm is triggered to remind workers to drain the water from the tunnel as soon as possible.

[0014] In one embodiment of this utility model, the control module further includes a power supply module, which is connected to the communication module, the signal processing module and the sensor respectively, and the power supply module draws power through a cable connection.

[0015] In one embodiment of this invention, the thickness of the coating is at least 2 mm to ensure that electromagnetic waves can be shielded.

[0016] In one embodiment of this invention, the plating layer is a copper-iron plating layer. Utilizing the strong magnetic conductivity of iron and the strong electrical conductivity of copper, the shell forms a Faraday cage. This protects against both alternating electric and magnetic fields, ensuring that the sensors and control module are not interfered with by either, allowing them to operate normally, collect accurate data, and transmit the data to the control center for real-time monitoring of water accumulation in subway tunnels.

[0017] In one embodiment of this utility model, the sensor is a liquid level sensor.

[0018] In one embodiment of this utility model, the water inlet is a circular through hole.

[0019] In one embodiment of this utility model, the housing is installed on a wall, and one end of the housing with the water inlet abuts against the subway tunnel.

[0020] Beneficial effects

[0021] This invention provides a magnetically shielded water depth measuring device for subway tunnels. By applying a metal coating of at least 2mm thickness to the outer surface of the casing, the device forms a Faraday cage, ensuring electromagnetic waves are shielded. This prevents interference from the magnetic field from affecting the sensors and control module, allowing them to operate normally, collect accurate data, and transmit the data to the control center. This enables real-time monitoring of water depth in subway tunnels, improving the accuracy of water depth monitoring data. An alarm is triggered when the water depth reaches a warning threshold, alerting staff to drain the water from the tunnel as quickly as possible to prevent disruption to subway operation safety. Attached Figure Description

[0022] Figure 1 A perspective view of the magnetically shielded water depth measuring device provided by this utility model;

[0023] Figure 2 A cross-sectional view of the magnetically shielded water depth measuring device provided by this utility model;

[0024] Figure 3 Another cross-sectional view of the magnetically shielded water depth measuring device provided by this utility model;

[0025] Figure 4 A schematic diagram of the installation of the magnetically shielded water depth measuring device provided by this utility model;

[0026] In the picture:

[0027] 1. Control module; 11. Power supply module; 12. Communication module; 13. Signal processing module; 2. Housing; 3. Water inlet; 4. Sensor; 5. Plating; 6. Cable; 7. Wall; 8. Rail. Detailed Implementation

[0028] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1 to 4 As shown in the illustration, this application provides a magnetically shielded water depth measuring device for subway tunnels. This device overcomes the shortcomings of existing technologies and can measure water depth even under strong magnetic field interference in subway tunnels, solving the problem of inaccurate monitoring data caused by electronic device malfunctions or abnormalities under electromagnetic fields. The water depth measuring device includes a control module 1, a housing 2, a water inlet 3, a sensor 4, and a coating 5. The housing 2 has a cuboid structure with a hollow interior. The control module 1 is installed at one end of the housing 2. The water inlet 3 is a small circular hole located on the side of the housing 2 opposite to the control module 1. The sensor 4 is installed inside the housing 2, with one end connected to the control module 1 and the other end flush with the end face of the housing 2. Water in the subway tunnel can flow into the housing 2 through the water inlet 3, making the water level inside the housing 2 the same as the water level in the subway tunnel. Sensor 4 senses the water level in housing 2 and transmits the collected information to control module 1. Control module 1 then transmits the information to control center. When the water level is too high, control center issues an alarm to remind staff to drain the water in time.

[0032] In some embodiments, the outer side of the housing 2 is covered with a plating layer 5, and is equipped with leads for proper grounding. The plating layer 5 is made of metal and its thickness should be at least 2mm to ensure electromagnetic wave shielding. Specifically, in this embodiment, the plating layer 5 is made of copper-iron. A 2mm thick copper-iron layer is plated on the outer side of the housing 2, utilizing the strong magnetic conductivity of iron and the strong electrical conductivity of copper to form a Faraday cage. This protects against both alternating electric and magnetic fields, ensuring that the sensor 4 and control module 1 are not affected by magnetic or electric field interference, allowing them to operate normally, collect accurate data, and transmit the data to the control center for real-time monitoring of water accumulation in subway tunnels. This improves the accuracy of water depth monitoring data in subway tunnels and avoids affecting subway operation safety.

[0033] In some embodiments, the control module 1 includes a power supply module 11, a communication module 12, and a signal processing module 13. The power supply module 11 is connected to the communication module 12, the signal processing module 13, and the sensor 4, providing power to the entire water depth measuring device. The communication module 12 is connected to the signal processing module 13, and the signal processing module 13 is connected to the sensor 4. The signal processing module 13 can receive the electrical signals fed back from the sensor 4, process and convert them, and then transmit them to the control center through the communication module 12. The control center converts the received information into water depth for display. When the water depth reaches the warning value, an alarm is triggered to remind staff to drain the water in the tunnel as soon as possible.

[0034] In some embodiments, the water depth measuring device is installed between the rail 8 and the wall 7. The housing 2 can be installed on the wall 7 by bolts or screws. One end of the housing 2 with the water inlet 3 is connected to the subway tunnel. The cable 6 is laid along the wall and passes over the water depth measuring device. The power module 11 is connected to the cable 6 and can draw power from the cable 6 to provide power to the entire device.

[0035] Optionally, sensor 4 is a liquid level sensor. Specifically, in this embodiment, sensor 4 can be a float-type liquid level sensor, a float-type liquid level sensor, or a hydrostatic liquid level sensor.

[0036] The working principle of this invention: The cables 6 in subway tunnels contain numerous electrified lines, carrying large currents and generating significant induced electromagnetic fields, which can affect the normal operation of the water depth measuring device within the subway tunnels. The water depth measuring device of this application addresses this by applying a metal plating layer 5 on the outer side of the housing 2, with a thickness of at least 2mm. This plating layer forms a Faraday cage around the housing 2, ensuring electromagnetic waves are shielded. This prevents interference from the magnetic field from affecting the sensor 4 and control module 1, allowing them to operate normally, collect accurate data, and transmit the data to the control center, thus achieving real-time monitoring of water depth within the subway tunnels. This improves the accuracy of water depth monitoring data within subway tunnels and prevents disruptions to subway operation safety.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0039] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A magnetically shielded water depth measuring device for subway tunnels, characterized in that, include: Control module (1); The housing (2) contains the control module (1) which is installed inside the housing (2). Sensor (4), the sensor (4) being located inside the housing (2); The coating (5) covers the outer periphery of the shell (2), and the coating (5) is a metal coating, so that the shell (2) forms a Faraday cage structure.

2. The magnetically shielded water depth measuring device for subway tunnels according to claim 1, characterized in that, It includes a water inlet (3), which is located at the end of the housing (2) away from the control module (1).

3. The magnetically shielded water depth measuring device for subway tunnels according to claim 2, characterized in that, The shell (2) is a cuboid structure with an internal cavity.

4. The magnetically shielded water depth measuring device for subway tunnels according to claim 1, characterized in that, The control module (1) includes a communication module (12) and a signal processing module (13). The communication module (12) is connected to the signal processing module (13), and the signal processing module (13) is connected to the sensor (4).

5. A magnetically shielded water depth measuring device for subway tunnels according to claim 4, characterized in that, The control module (1) further includes a power module (11), which is connected to the communication module (12), the signal processing module (13) and the sensor (4) respectively. The power module (11) draws power through a cable (6).

6. The magnetically shielded water depth measuring device for subway tunnels according to claim 1, characterized in that, The thickness of the coating (5) is at least 2 mm.

7. A magnetically shielded water depth measuring device for subway tunnels according to claim 6, characterized in that, The coating (5) is a copper-iron coating.

8. A magnetically shielded water depth measuring device for subway tunnels according to claim 1, characterized in that, The sensor (4) is a liquid level sensor.

9. A magnetically shielded water depth measuring device for subway tunnels according to claim 2, characterized in that, The water inlet (3) is a circular through hole.

10. A magnetically shielded water depth measuring device for subway tunnels according to claim 9, characterized in that, The housing (2) is mounted on the wall (7), and one end of the housing (2) with the water inlet (3) is in contact with the subway tunnel.

Images