High-reliability metro platform door control DCU device

Abstract

The application relates to the technical field of urban rail transit equipment, and discloses a high-reliability metro platform door control DCU device. In the application, a DCU device shell is arranged with a mounting plate at the lower end, mounting holes are arranged at the four corners of the mounting plate, a plurality of interfaces are arranged on one side of the DCU device shell, a wave-absorbing shielding layer is arranged in the DCU device shell, a conductive shielding layer is arranged on the outer side of the wave-absorbing shielding layer, a corrosion-resistant shielding layer is arranged on the outer side of the conductive shielding layer, the material of the wave-absorbing shielding layer is a flexible ferrite wave-absorbing material, the three shielding layers can cover the whole interference frequency band from low frequency to high frequency, the structure takes into account protection and practicability, the flexible inner layer is suitable for complex shell curved surfaces, the high-conductivity middle layer is combined with the high-strength outer layer, in the scene of subway vibration and personnel touching, the stable anti-interference performance is maintained, the shell structural integrity is ensured, and a solid protection foundation is provided for long-term stable operation of the DCU device.

Description

Technical Field

[0001] This application belongs to the field of urban rail transit equipment technology, specifically a high-reliability subway platform door control DCU device. Background Technology

[0002] In urban rail transit operations, subway platform screen doors are a crucial barrier ensuring passenger safety and operational order. They must precisely separate the platform from the track area to prevent people from accidentally entering the tracks, and simultaneously coordinate with train arrival times to ensure synchronized door opening and closing, directly impacting the operational efficiency of the subway line and the passenger travel experience. The platform screen door control unit (DCU), as the "control center" of the system, undertakes core functions such as receiving commands from the central control system, driving the door operator motor, collecting door position and status data, and performing fault diagnosis and alarms. It is a core component ensuring the stable operation of the platform screen door system. With the continuous growth of passenger flow and the increasing complexity of the operating environment on subway lines, platform screen door systems face higher reliability requirements. Subway platforms and track areas contain various electromagnetic radiation sources, such as high-frequency pulses generated by the traction power supply system, electromagnetic induction during train operation, instantaneous impacts from the start-up and shutdown of station power equipment, and radio frequency signals from wireless communication systems. These environmental factors pose a severe challenge to the anti-interference capabilities of the DCU device. Simultaneously, the DCU device integrates multiple components, and long-term full-load operation generates a large amount of heat, requiring even higher heat dissipation performance. However, existing DCU devices have simple anti-interference designs, making them vulnerable to complex electromagnetic interference and prone to control anomalies, which reduces their stability during operation. Utility Model Content

[0003] The purpose of this application is to provide a highly reliable subway platform door control DCU device to address the problems mentioned above, such as the simple anti-interference design of existing DCU devices, which makes them difficult to resist complex electromagnetic interference and prone to control abnormalities that reduce their stability during operation.

[0004] The technical solution adopted in this application is as follows: A high-reliability subway platform door control DCU device includes a DCU device housing, a mounting plate is provided at the lower end of the DCU device housing, mounting holes are provided at the four corners of the mounting plate, a number of interfaces are provided on one side of the DCU device housing, a wave-absorbing shielding layer is provided inside the DCU device housing, a conductive shielding layer is provided outside the wave-absorbing shielding layer, and an anti-corrosion shielding layer is provided outside the conductive shielding layer.

[0005] By adopting the above technical solution, the three-layer shielding can cover the entire interference frequency band from low frequency to high frequency. Moreover, the structure takes into account both protection and practicality. The flexible inner layer adapts to the complex outer shell surface, and the high conductivity of the middle layer is combined with the high strength of the outer layer to ensure that it maintains stable anti-interference performance and protects the integrity of the shell structure in scenarios such as subway vibration and personnel contact, providing a solid protective foundation for the long-term stable operation of the DCU device.

[0006] As a further description of the above technical solution, the material of the absorbing shielding layer is a flexible ferrite absorbing material.

[0007] By adopting the above technical solution, it possesses excellent high-frequency magnetic loss characteristics, which can accurately absorb radio frequency interference in the 30MHz-3GHz frequency band, preventing such interference from being reflected and coupled to the core circuit inside the DCU device housing. This effectively reduces the risk of control chip logic confusion and signal transmission errors. Its flexible material can easily cover areas such as corners and interfaces that are prone to shielding dead angles, ensuring that there is no omission in the wave absorption protection. At the same time, the flexibility also reduces the processing and assembly difficulty of the DCU device housing, eliminating the need to adjust the housing structure separately to adapt to the wave absorption layer. This balances protection effect and production convenience, helping the DCU device to operate stably in the complex electromagnetic environment of the subway.

[0008] As a further description of the above technical solution, the conductive shielding layer is made of oxygen-free copper plate.

[0009] By adopting the above technical solution, it has extremely high conductivity and can efficiently reflect 10kHz-30MHz mid-frequency electromagnetic interference in the subway environment, forming a stable electromagnetic barrier, which greatly reduces the probability of interference signals intruding into the internal circuit. In addition, it has strong chemical stability and is not easily oxidized and corroded in the humid and dusty environment of the subway platform. It can maintain good conductivity and shielding performance for a long time and extend the service life of the shielding layer.

[0010] As a further description of the above technical solution, the anti-corrosion shielding layer is made of galvanized steel sheet.

[0011] By adopting the above technical solution, the galvanized layer can form a dense oxide film on the surface of the steel plate, effectively isolating the humid air and dust in the subway platform, preventing the internal components from being exposed due to rust and damage to the outer shell, extending the overall service life of the device, and reducing maintenance costs in humid environments. At the same time, the steel plate material itself has a certain magnetic shielding performance, which can form a supplementary shield against low-frequency electromagnetic interference of ≤10kHz in the subway environment. Together with the wave-absorbing shielding layer and the conductive shielding layer, it can broaden the anti-interference frequency range of the device.

[0012] As a further description of the above technical solution, the surface of the mounting plate is provided with a slot, and a mesh cover is inserted into the inside of the slot.

[0013] By adopting the above technical solution, it can more efficiently attenuate medium and high frequency electromagnetic interference signals near the DCU device, reduce the impact of interference on the core circuit after passing through the gaps in the casing, and strengthen the anti-interference barrier.

[0014] As a further description of the above technical solution, the mounting plate has internal threaded connections of fixing bolts on both sides, one end of the fixing bolt abutting abutting plate corresponding to the slot, and a return spring is provided on one side of the abutting plate.

[0015] By adopting the above technical solution, when the mesh cover is inserted into the slot, rotating the fixing bolt pushes the return spring to push and squeeze the mesh cover, improving the stability of the mesh cover inserted into the slot. At the same time, when removing the slot, rotating the fixing bolt in the opposite direction, under the elastic force of the return spring, releases the pressure of the abutment plate on the mesh cover, making it easier to disassemble and assemble the mesh cover and improving convenience.

[0016] As a further description of the above technical solution, the surface of the slot is covered with an anti-slip pad.

[0017] By adopting the above technical solution, the stability of the mesh cover inserted into the slot is improved with the help of the anti-slip pad.

[0018] As a further description of the above technical solution, the mesh cover is made of phosphor bronze mesh.

[0019] By adopting the above technical solution, it has excellent conductivity, can efficiently reflect medium and high frequency electromagnetic interference signals, enhance the DCU device's resistance to radio frequency interference and pulse interference in the subway environment, reduce control abnormalities caused by interference signals intruding through the interface, and has excellent mechanical strength and fatigue resistance, making it less prone to deformation and damage, extending the service life of the mesh cover and reducing maintenance frequency. At the same time, it has good corrosion resistance, which can effectively resist oxidation and corrosion in the humid and dusty environment of the subway platform, prevent the mesh cover from affecting the shielding and dustproof effect due to rust, and ensure the long-term stable operation of the DCU device.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are: In this application, the three-layer shielding can cover the entire interference frequency band from low frequency to high frequency. The structure takes into account both protection and practicality. The flexible inner layer adapts to the complex outer shell surface, and the high conductivity of the middle layer and the high strength of the outer layer are combined to ensure that the stable anti-interference performance is maintained in scenarios such as subway vibration and personnel contact, while ensuring the integrity of the shell structure, providing a solid protective foundation for the long-term stable operation of the DCU device. Attached Figure Description

[0021] Figure 1 This is a front view of the DCU device in this application. Figure 2 This is a schematic diagram of the internal structure of the DCU device housing in this application; Figure 3 This is a schematic diagram of the internal structure of the fixing device in this application; Figure 4 This is a schematic diagram of the planar structure of the slot in this application.

[0022] The markings in the diagram are: 1. DCU device housing; 2. Mounting plate; 3. Fixing bolt; 4. Interface; 5. Mesh cover; 6. Slot; 7. Mounting hole; 8. Wave-absorbing shielding layer; 9. Conductive shielding layer; 10. Corrosion-resistant shielding layer; 11. Return spring; 12. Abutment plate; 13. Anti-slip pad. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] 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., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example

[0025] Reference Figure 1-4A high-reliability subway platform door control DCU device includes a DCU device housing 1, a mounting plate 2 at the lower end of the DCU device housing 1, mounting holes 7 at the four corners of the mounting plate 2, and several interfaces 4 on one side of the DCU device housing 1. An absorbing shielding layer 8 is disposed inside the DCU device housing 1, a conductive shielding layer 9 is disposed outside the absorbing shielding layer 8, and an anti-corrosion shielding layer 10 is disposed outside the conductive shielding layer 9. These three shielding layers work together to cover the entire interference frequency band from low to high frequencies. This structure balances protection and practicality; the flexible inner layer adapts to the complex curved surface of the housing, and the combination of the high conductivity of the middle layer and the high strength of the outer layer ensures stable anti-interference performance and maintains the integrity of the housing structure under scenarios such as subway vibration and personnel contact, providing a solid protective foundation for the long-term stable operation of the DCU device.

[0026] Reference Figure 2 The absorbing shielding layer 8 is made of flexible ferrite absorbing material, which has excellent high-frequency magnetic loss characteristics and can accurately absorb radio frequency interference in the 30MHz-3GHz frequency band. This prevents such interference from being reflected and coupled to the core circuit inside the DCU device housing 1, effectively reducing the risk of control chip logic confusion and signal transmission errors. Its flexible material can easily cover areas such as corners and interfaces that are prone to shielding dead angles, ensuring that the absorbing protection is comprehensive. At the same time, the flexibility also reduces the processing and assembly difficulty of the DCU device housing 1, eliminating the need to adjust the housing structure separately to fit the absorbing layer. This balances protection effect and production convenience, helping the DCU device to operate stably in the complex electromagnetic environment of the subway.

[0027] Reference Figure 2 The conductive shielding layer 9 is made of oxygen-free copper plate, which has extremely high conductivity and can effectively reflect the 10kHz-30MHz medium frequency electromagnetic interference in the subway environment, forming a stable electromagnetic barrier and greatly reducing the probability of interference signals intruding into the internal circuit. In addition, it has strong chemical stability and is not easily oxidized and corroded in the humid and dusty environment of the subway platform. It can maintain good conductivity and shielding performance for a long time and extend the service life of the shielding layer.

[0028] Reference Figure 2 The anti-corrosion shielding layer 10 is made of galvanized steel plate. The galvanized layer can form a dense oxide film on the surface of the steel plate, effectively isolating the humid air and dust in the subway platform, preventing the internal components from being exposed due to rust and damage to the outer shell, extending the overall service life of the device, and reducing maintenance costs in humid environments. At the same time, the steel plate material itself has a certain magnetic shielding performance, which can form a supplementary shield against low-frequency electromagnetic interference of ≤10kHz in the subway environment. Together with the wave-absorbing shielding layer 8 and the conductive shielding layer 9, it can broaden the anti-interference frequency range of the device.

[0029] Reference Figure 1 and Figure 3-4The mounting plate 2 has a slot 6 on its surface, and a mesh cover 5 is inserted into the slot 6. It can more efficiently attenuate the medium and high frequency electromagnetic interference signals close to the DCU device, reduce the impact of interference on the core circuit after passing through the gap of the shell, and strengthen the anti-interference barrier.

[0030] Reference Figure 3 The mounting plate 2 has internal threaded connections of fixing bolts 3 on both sides. One end of the fixing bolt 3 abuts against a corresponding abutment plate 12. A return spring 11 is provided on one side of the abutment plate 12. When the mesh cover 5 is inserted into the slot 6, rotating the fixing bolt 3 pushes the return spring 11 to push and squeeze the mesh cover 5, improving the stability of the mesh cover 5 inserted into the slot 6. At the same time, when removing the slot 6, rotating the fixing bolt 3 in the opposite direction releases the pressure of the abutment plate 12 on the mesh cover 5 under the elastic force of the return spring 11, making it easier to install and remove the mesh cover 5 and improving convenience.

[0031] Reference Figure 4 The surface of slot 6 is covered with anti-slip pads 13, which improve the stability of the mesh cover 5 when inserted into slot 6.

[0032] Reference Figure 1 and Figure 4 The mesh cover 5 is made of phosphor bronze mesh, which has excellent conductivity and can efficiently reflect medium and high frequency electromagnetic interference signals. This enhances the DCU device's resistance to radio frequency interference and pulse interference in the subway environment, reduces control anomalies caused by interference signals intruding through the interface, and has excellent mechanical strength and fatigue resistance. It is not easy to deform or break, extending the service life of the mesh cover and reducing the frequency of maintenance. At the same time, it has good corrosion resistance and can effectively resist oxidation and corrosion in the humid and dusty environment of the subway platform, preventing the mesh cover 5 from being affected by rust and affecting the shielding and dustproof effect, thus ensuring the long-term stable operation of the DCU device.

[0033] The implementation principle of a high-reliability subway platform door control DCU device according to this application is as follows: The inner absorbing shielding layer 8 can accurately absorb high-frequency radio frequency interference and avoid signal reflection coupling. The middle conductive shielding layer 9 can efficiently reflect medium-frequency electromagnetic shocks, forming a core barrier. The splicing and sealing design prevents shielding leakage. The outer anti-corrosion shielding layer 10 not only resists moisture and dust corrosion to extend its lifespan, but also supplements the shielding against low-frequency interference. The three layers work together to cover the entire interference frequency band from low to high frequencies. The mesh cover 5 is inserted into the slot 6. Rotating the fixing bolt 3 pushes the return spring 11 to push and squeeze the mesh cover 5, improving the stability of the mesh cover 5 inserted into the slot 6. At the same time, when removing the slot 6, rotating the fixing bolt 3 in the opposite direction, under the elastic force of the return spring 11, releases the pressure of the abutment plate 12 on the mesh cover 5, making it easy to disassemble and assemble the mesh cover 5 and improving convenience.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A high-reliability subway platform door control DCU device, comprising a DCU device housing (1), characterized in that: The lower end of the housing (1) of the DCU device is provided with a mounting plate (2), and the four corners of the mounting plate (2) are provided with mounting holes (7). Several interfaces (4) are provided on one side of the housing (1) of the DCU device. The inside of the housing (1) of the DCU device is provided with a wave-absorbing shielding layer (8), the outside of the wave-absorbing shielding layer (8) is provided with a conductive shielding layer (9), and the outside of the conductive shielding layer (9) is provided with an anti-corrosion shielding layer (10).

2. The high-reliability subway platform door control DCU device as described in claim 1, characterized in that: The material of the absorbing shielding layer (8) is a flexible ferrite absorbing material.

3. The high-reliability subway platform door control DCU device as described in claim 1, characterized in that: The conductive shielding layer (9) is made of oxygen-free copper plate.

4. The high-reliability subway platform door control DCU device as described in claim 1, characterized in that: The anti-corrosion shielding layer (10) is made of galvanized steel plate.

5. A high-reliability subway platform door control DCU device as described in claim 1, characterized in that: The mounting plate (2) has a slot (6) on its surface, and a mesh cover (5) is inserted into the slot (6).

6. A high-reliability subway platform door control DCU device as described in claim 5, characterized in that: The mounting plate (2) has internal threaded connections of fixing bolts (3) on both sides. One end of the fixing bolt (3) abuts against a corresponding abutment plate (12) of the slot (6). A return spring (11) is provided on one side of the abutment plate (12).

7. A high-reliability subway platform door control DCU device as described in claim 5, characterized in that: The surface of the slot (6) is covered with an anti-slip pad (13).

8. A high-reliability subway platform door control DCU device as described in claim 5, characterized in that: The mesh cover (5) is made of phosphor bronze mesh.

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