Contact line icing monitoring device

Abstract

This disclosure provides a contact network icing monitoring device, relating to the field of contact network icing monitoring technology. It includes an infrared imaging sensor, a snapshot device, a comparison module, and a power supply device. The infrared imaging sensor is connected to both the comparison module and the power supply device, and is used to acquire real-time infrared images of the contact network. The snapshot device is also connected to both the comparison module and the power supply device, and is used to capture real-time photos of the contact network. The comparison module receives the real-time infrared images and real-time photos and extracts real-time icing data. It also compares the real-time icing data with historical icing data to generate icing monitoring data. This disclosure uses at least two devices—an infrared imaging sensor and a snapshot device—to acquire information about the icing status of the contact network, which helps improve the accuracy and reliability of contact network icing monitoring. Furthermore, since the infrared imaging sensor and the snapshot device do not directly contact the contact network, power outages are not required, which helps reduce maintenance costs.

Description

Technical Field

[0001] This disclosure relates to the field of overhead contact line icing monitoring technology, and in particular to an overhead contact line icing monitoring device. Background Technology

[0002] The overhead contact line (such as the power supply contact line in railways and urban rail transit) is an overhead transmission line that provides power to rail vehicles. In winter, when temperatures are low, frost or rime easily condenses on the surface of the transmission conductors, leading to line icing. Line icing is a serious natural disaster for the power supply system, causing problems such as poor current draw for electric locomotives, unstable grid voltage, and in severe cases, major accidents such as line breaks and pantograph strikes, affecting train operations and causing significant economic losses and social impact. Therefore, monitoring icing on the overhead contact line is crucial for ensuring the safety of electrified railway transportation.

[0003] Traditional contact-type icing monitoring devices determine icing conditions by directly contacting the surface of transmission lines to monitor surface temperature, ice thickness, and ice morphology. When the sensor is covered by ice, significant measurement errors or malfunctions may occur. Furthermore, the sensors are installed on high-voltage overhead lines, requiring power outages for maintenance and installation, increasing operational costs. Moreover, existing equipment often uses a single sensor for monitoring, resulting in poor reliability and unsuitability for electrified railway catenary systems (due to the pantograph-catenary current-collecting characteristics, contact-type systems could compromise train operation safety).

[0004] Therefore, how to improve the above problems has become one of the urgent technical issues to be addressed at this stage. Utility Model Content

[0005] To address the aforementioned technical problems, this disclosure provides a contact wire icing monitoring device.

[0006] This disclosure provides a contact wire icing monitoring device, including an infrared imaging sensor, a snapshot device, a comparison module, and a power supply device;

[0007] The infrared imaging sensor is connected to the comparison module and the power supply device respectively, and the infrared imaging sensor is used to acquire real-time infrared images of the contact wire.

[0008] The snapshot device is connected to the comparison module and the power supply device respectively, and the snapshot device is used to capture real-time photos of the contact wire.

[0009] The comparison module is used to receive the real-time infrared image and the real-time photo and extract the real-time icing data. It is also used to compare the real-time icing data with historical icing data and generate icing monitoring data.

[0010] The power supply device is used to supply power to the infrared imaging sensor and the capture device.

[0011] Optionally, where:

[0012] The power supply unit includes a power generation module, a charging power module, a battery system, and a discharging power module;

[0013] The power generation module is connected to the charging power module;

[0014] The battery system is connected to the charging power module and the discharging power module, respectively.

[0015] Optionally, where:

[0016] The power generation module includes a photovoltaic panel and a wind turbine, both of which are connected to the charging power module.

[0017] Optionally, where:

[0018] The charging power module includes a flyback module and a pulse width modulation rectifier module;

[0019] The photovoltaic panel charges the battery system through the flyback module, and the wind turbine charges the battery system through the pulse width modulation rectifier module.

[0020] Optionally, where:

[0021] The battery system includes a lithium battery, a battery management module, and a temperature control module, wherein the lithium battery is electrically connected to the battery management module and the temperature control module respectively.

[0022] Optionally, where:

[0023] The positive electrode material of the lithium battery is lithium iron phosphate.

[0024] Optionally, where:

[0025] The battery management module includes a voltage protection module and a temperature protection module, both of which are connected to the lithium battery.

[0026] The voltage protection module is used to monitor the charging and discharging states of the lithium battery.

[0027] The temperature protection module is used to monitor the operating temperature of the lithium battery.

[0028] Optionally, where:

[0029] The temperature control module includes a thermocouple connected to the lithium battery, which is used to monitor the temperature of the lithium battery in real time.

[0030] Optionally, where:

[0031] It also includes a server, which is connected to the comparison module, and the server is used to receive and store the icing monitoring data.

[0032] Optionally, where:

[0033] It also includes a display module, which is connected to the server and is used to receive and display the icing monitoring data.

[0034] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0035] This disclosure provides a contact network icing monitoring device, including an infrared imaging sensor, a snapshot device, a comparison module, and a power supply device. The infrared imaging sensor is connected to both the comparison module and the power supply device, and is used to acquire real-time infrared images of the contact network. The snapshot device is connected to both the comparison module and the power supply device, and is used to capture real-time photos of the contact network. The comparison module is used to receive the real-time infrared images and real-time photos and extract real-time icing data, and is also used to compare the real-time icing data with historical icing data and generate icing monitoring data. The power supply device is used to supply power to the infrared imaging sensor and the snapshot device. This disclosure uses at least two devices, namely an infrared imaging sensor and a snapshot device, to acquire information on the icing status of the overhead contact line. The fusion of these dual-modal data improves the accuracy and reliability of overhead contact line icing monitoring, thereby enhancing the safety of electrified railway transportation. Furthermore, since the infrared imaging sensor and snapshot device do not directly contact the overhead contact line, this is a non-contact monitoring method that eliminates the need for power outages, reducing maintenance costs. In addition, compared to contact monitoring, this non-contact monitoring method is safer and more conducive to ensuring train operation safety. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0037] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 The diagram shown is a schematic representation of a contact wire icing monitoring device provided in an embodiment of this disclosure.

[0039] Figure 2 The diagram shown is a schematic representation of a power supply device provided in an embodiment of this disclosure.

[0040] Figure 3 The diagram shown is another schematic diagram of the contact wire icing monitoring device provided in the embodiments of this disclosure. Detailed Implementation

[0041] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0042] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0043] The inventors discovered in their research that traditional contact-type icing monitoring devices determine icing conditions by directly contacting the surface of transmission lines to monitor surface temperature, ice thickness, and ice morphology. When the sensor is covered by ice, significant measurement errors or malfunctions may occur. Furthermore, the sensors are installed on high-voltage overhead lines, requiring power outages for maintenance and installation, increasing operational costs. Moreover, existing equipment often uses a single sensor for monitoring, resulting in poor reliability.

[0044] Therefore, how to improve the above problems has become one of the urgent technical issues to be addressed at this stage.

[0045] Figure 1 The diagram shown is a schematic representation of a contact wire icing monitoring device provided in an embodiment of this disclosure. Please refer to it. Figure 1 This disclosure provides a contact network icing monitoring device 100, including an infrared imaging sensor 10, a snapshot device 20, a comparison module 30, and a power supply device 40. The infrared imaging sensor 10 is connected to the comparison module 30 and the power supply device 40, and is used to acquire real-time infrared images of the contact network. The snapshot device 20 is connected to the comparison module 30 and the power supply device 40, and is used to capture real-time photos of the contact network. The comparison module 30 is used to receive the real-time infrared images and real-time photos and extract real-time icing data. It is also used to compare the real-time icing data with historical icing data and generate icing monitoring data. The power supply device 40 is used to supply power to the infrared imaging sensor 10 and the snapshot device 20.

[0046] Specifically, this disclosure provides a contact wire icing monitoring device 100, wherein the infrared imaging sensor 10 is a device capable of sensing and measuring the temperature distribution of an object's surface. It utilizes infrared thermal imaging technology to convert infrared radiation into electrical signals, thereby forming an observable image. Optionally, the infrared imaging sensor 10 is a FLIR T1030sc, installed on the top of the contact wire support to acquire the contact wire temperature distribution in real time. It should be noted that this disclosure is only used as an example and is not limited thereto; any device capable of acquiring real-time infrared images of the contact wire is acceptable. In this disclosure, the infrared imaging sensor 10 acquires real-time infrared images of the contact wire, and the icing status of the contact wire can be extracted from these real-time infrared images.

[0047] The snapshot device 20 is a camera. Optionally, the snapshot device 20 can be a Hikvision DS-2CD3T47EWD-L 4-megapixel camera to simultaneously capture real-time high-definition photos of the contact network. It should be noted that this disclosure is only used as an example and is not limited thereto; any device capable of acquiring real-time images of the contact network is acceptable. This disclosure obtains real-time photos of the contact network by setting up the snapshot device 20, and the icing condition of the contact network can be determined based on these photos.

[0048] The real-time infrared images acquired by the infrared imaging sensor 10 and the real-time photos acquired by the capture device 20 are both transmitted to the comparison module 30. In the comparison module 30, the real-time infrared images and real-time photos are processed to extract relevant real-time icing data. This real-time icing data is then compared with historical icing data to generate icing monitoring data. In some optional embodiments, the comparison module 30 extracts real-time icing information from the real-time infrared images acquired by the infrared imaging sensor 10 and the real-time photos acquired by the capture module. For example, the real-time icing information includes the icing area of ​​the contact wire and the icing thickness of the icing area. By comparing the real-time icing information with historical icing information, misjudged information is filtered out, improving the accuracy of icing monitoring. In some other optional implementations, the comparison module 30 extracts real-time icing information based on real-time infrared images and real-time photographs, summarizes real-time icing information from different areas or locations of the overhead contact line, and calculates the icing probability of different line segments by combining it with historical icing information. This generates high-icing and medium-to-low-icing sections of the overhead contact line, allowing for targeted measures to be taken for different sections, which helps prevent severe icing. Optionally, the comparison module 30 is equipped with a processor, such as an NVIDIA Jetson Nano processor, which can incorporate deep learning algorithms and ant colony algorithms to increase the efficiency of extracting real-time icing information and the efficiency of comparing real-time and historical icing information, thereby improving monitoring efficiency and accuracy. It should be noted that this disclosure is only an example and is not intended to limit the scope of the invention.

[0049] The power supply device 40 is used to provide a stable power supply to the infrared imaging sensor 10 and the capture device 20. Since the infrared imaging sensor 10 and the capture device 20 are mostly located in harsh outdoor environments, a stable power supply is the basis for the stable operation of the infrared imaging sensor 10 and the capture device 20.

[0050] It should be noted that the catenary icing monitoring device 100 provided in this disclosure acquires the icing status of the catenary through at least two devices: an infrared imaging sensor 10 and a snapshot device 20. The aforementioned dual-modal data fusion is beneficial to improving the accuracy and reliability of catenary icing monitoring, and thus to enhancing the safety of electrified railway transportation. At the same time, the infrared imaging sensor 10 and the snapshot device 20 do not directly contact the catenary, making it a non-contact monitoring method that does not require power outages, which helps reduce maintenance costs. Furthermore, compared to contact monitoring, the non-contact monitoring method of this disclosure is safer and more conducive to ensuring the safety of train operation.

[0051] Figure 2 The diagram shown is a schematic representation of a power supply device provided in an embodiment of this disclosure. Please refer to it. Figure 1 and Figure 2 In one optional embodiment of this disclosure, the power supply device 40 includes a power generation module 41, a charging power module 42, a battery system 43, and a discharging power module 44; the power generation module 41 is connected to the charging power module 42; and the battery system 43 is connected to both the charging power module 42 and the discharging power module 44.

[0052] Specifically, the power supply device 40 is used to provide power to the infrared imaging sensor 10 and the capture device 20. In the power supply device 40, the power generation module 41 is used to provide power to the battery system 43, and to charge the battery system 43 through the charging power module 42, and then to convert the voltage output by the battery system 43 into the voltage required by the infrared imaging sensor 10 and the capture device 20 through the discharging power module 44 for power supply.

[0053] Please continue to refer to this. Figure 1 and Figure 2In one optional embodiment of this disclosure, the power generation module 41 includes a photovoltaic panel 411 and a wind turbine 412, both of which are connected to the charging power module 42. The photovoltaic panel 411 is a power generation device that generates direct current when exposed to sunlight. Optionally, the photovoltaic panel 411 can be a LONGi Hi-MO 5m² panel. It should be noted that this disclosure is only an example and is not limited thereto. Using the photovoltaic panel 411 as the power generation device enables the conversion of solar energy into electrical energy to power the infrared imaging sensor 10 and the capture device 20, which helps reduce power supply costs. Furthermore, solar energy is a clean energy source and is beneficial for environmental protection. The wind turbine 412 is an electrical device that converts wind energy into electrical energy. Optionally, the wind turbine 412 can be a small wind turbine, specifically a wind turbine 412 with a power generation capacity of 10 kilowatts or less. Small wind turbines are smaller in size, which helps reduce the footprint and are suitable for various environments. It should be noted that this disclosure is only an example and is not limited thereto. Using the 412 wind turbine as the power generation device makes full use of the outdoor advantages to generate wind power, which is also beneficial to reducing power supply costs and protecting the environment.

[0054] Please continue to refer to this. Figure 1 and Figure 2 In one optional embodiment of this disclosure, the charging power module 42 includes a flyback module 421 and a pulse width modulation rectifier module 422; the photovoltaic panel 411 charges the battery system 43 through the flyback module 421, and the wind turbine 412 charges the battery system 43 through the pulse width modulation rectifier module 422.

[0055] Specifically, the flyback module 421 is an isolated DC-DC (Direct Current to Direct Current) switching power supply topology that uses a high-frequency transformer for energy storage and transfer, supporting a wide input voltage range. The photovoltaic panel 411 directly outputs DC power, eliminating the need for additional rectification by the flyback module 421, which can directly process the DC input. The photovoltaic panel 411 charges the battery system 43 through the flyback module 421, making it more suitable for DC input characteristics. Furthermore, the output voltage of the photovoltaic panel 411 fluctuates under varying weather conditions (e.g., 30V on sunny days, 18V on cloudy days), and the flyback module 421 stabilizes the output voltage through duty cycle adjustment. The pulse width modulation (PWM) rectifier module is an AC-DC (Alternating Current to Direct Current) conversion circuit based on pulse width modulation, converting AC power into controllable DC power through high-frequency switching devices. The wind turbine 412 outputs AC power, which is rectified into DC power by the pulse width modulation rectifier module 422 to charge the battery system 43, thus meeting the AC input requirements. At the same time, wind speed changes may cause fluctuations in the rotational speed of the wind turbine 412. The pulse width modulation rectifier module 422 can track the optimal operating point in real time by adjusting the switching frequency to enable variable speed operation. Furthermore, the wind turbine 412 is prone to voltage fluctuations due to turbulence. The closed-loop control of the pulse width modulation rectifier module 422 can quickly suppress the fluctuations, thereby helping to suppress voltage spikes.

[0056] Please continue to refer to this. Figure 1 and Figure 2 In one optional embodiment of this disclosure, the battery system 43 includes a lithium battery 431, a battery management module 432, and a temperature control module 433. The lithium battery 431 is electrically connected to both the battery management module 432 and the temperature control module 433. Specifically, the battery system 43 includes a battery management module 432 and a temperature control module 433. The battery management module 432 is used at least to manage the battery status, and the temperature control module 433 is used to monitor the temperature of the lithium battery 431.

[0057] Please continue to refer to this. Figure 1 and Figure 2This disclosure provides an optional implementation in which the battery management module 432 includes a voltage protection module and a temperature protection module, both connected to the lithium battery 431. The voltage protection module monitors the charging and discharging states of the lithium battery 431, while the temperature protection module monitors the operating temperature of the lithium battery 431. Specifically, when the lithium battery 431 is charged beyond its upper voltage limit, the battery management module 432 disconnects the enable signal of the charging power module 42, causing it to stop working and thus disconnecting the charging circuit. When the lithium battery 431 is discharged below its lower voltage limit, the battery management module 432 disconnects the enable signal of the discharging power module 44, causing it to stop working and thus disconnecting the discharging circuit. When the operating temperature of the lithium battery 431 is below its lower temperature limit, the battery management module 432 short-circuits the lithium battery 431's connection point and simultaneously disconnects the battery charging and discharging circuits. This configuration provides overcharge, over-discharge, and over-temperature protection for the lithium battery 431, which helps improve the safety and reliability of the battery system 43.

[0058] Please continue to refer to this. Figure 1 and Figure 2 In one optional embodiment of this disclosure, the positive electrode material of the lithium battery 431 is lithium iron phosphate. It should be noted that using lithium iron phosphate as the positive electrode material of the lithium battery 431 is beneficial to improving the energy density of the lithium battery 431, reducing the volume of the lithium battery 431, reducing the space occupied by the battery system 43, and improving the charging and discharging efficiency of the battery system 43.

[0059] Please continue to refer to this. Figure 1 and Figure 2 In one optional embodiment of this disclosure, the temperature control module 433 includes a thermocouple connected to the lithium battery 431. The thermocouple is used to monitor the temperature of the lithium battery 431 in real time. Specifically, the temperature control module 433 monitors the temperature of the lithium battery 431 in real time via the thermocouple. When the temperature of the lithium battery 431 is lower than the lower limit temperature, the temperature control module 433 will activate the heating mode to heat the lithium battery 431, so that the lithium battery 431 operates within the optimal temperature range.

[0060] Please continue to refer to this. Figure 1 and Figure 2 In one optional embodiment of this disclosure, the discharge power module 44 adopts a flyback topology to boost the output voltage of the battery system 43 to supply power to the load.

[0061] Figure 3 The diagram shown is another schematic diagram of the overhead contact line icing monitoring device provided in this embodiment of the present disclosure. Please refer to [the diagram]. Figure 3 In one optional embodiment of this disclosure, the overhead contact line icing monitoring device 100 further includes a server 50, which is connected to the comparison module 30 and is used to receive and store icing monitoring data.

[0062] Specifically, server 50 includes a communication module, which connects to comparison module 30. Optionally, the communication module can be a 5G network (5th Generation Mobile Communication Technology). Server 50 receives and stores icing monitoring data obtained from comparison module 30 via the communication module. Optionally, server 50 has a storage module; for example, server 50 is equipped with a large-capacity memory, which can store icing monitoring data from the contact network site over a period of time, making it available for retrieval at any time.

[0063] Please continue to refer to this. Figure 3 In one optional embodiment of this disclosure, the overhead contact line icing monitoring device 100 further includes a display module 60, which is connected to the server 50 and is used to receive and display icing monitoring data. Specifically, the display module 60 can be used to display icing monitoring data of the overhead contact line to improve the visualization of icing monitoring. Optionally, the display module 60 can be an electronic device such as a computer monitor, tablet computer, or mobile phone. It should be noted that this disclosure is only used as an example and is not limited thereto.

[0064] As can be seen from the above embodiments, the contact wire icing monitoring device provided in this disclosure achieves at least the following beneficial effects:

[0065] This disclosure provides a contact network icing monitoring device, including an infrared imaging sensor, a snapshot device, a comparison module, and a power supply device. The infrared imaging sensor is connected to both the comparison module and the power supply device, and is used to acquire real-time infrared images of the contact network. The snapshot device is connected to both the comparison module and the power supply device, and is used to capture real-time photos of the contact network. The comparison module is used to receive the real-time infrared images and real-time photos and extract real-time icing data, and is also used to compare the real-time icing data with historical icing data and generate icing monitoring data. The power supply device is used to supply power to the infrared imaging sensor and the snapshot device. This disclosure uses at least two devices, namely an infrared imaging sensor and a snapshot device, to acquire information on the icing status of the overhead contact line. The fusion of these dual-modal data improves the accuracy and reliability of overhead contact line icing monitoring, thereby enhancing the safety of electrified railway transportation. Furthermore, since the infrared imaging sensor and snapshot device do not directly contact the overhead contact line, this is a non-contact monitoring method that eliminates the need for power outages, reducing maintenance costs. In addition, compared to contact monitoring, this non-contact monitoring method is safer and more conducive to ensuring train operation safety.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied without departing from the essence of this disclosure.

[0068] In cases involving gods or scope, this may be implemented in other embodiments. Therefore, this disclosure will not be limited.

[0069] The embodiments described herein are intended to be adapted to conform to the principles and novelty disclosed herein.

[0070] The widest range with consistent characteristics.

Claims

1. An overhead line icing monitoring device, characterized in that Includes an infrared imaging sensor, a capture device, a comparison module, and a power supply device; The infrared imaging sensor is connected to the comparison module and the power supply device respectively, and the infrared imaging sensor is used to acquire real-time infrared images of the contact wire. The snapshot device is connected to the comparison module and the power supply device respectively, and the snapshot device is used to capture real-time photos of the contact wire. The comparison module is used to receive the real-time infrared image and the real-time photo and extract the real-time icing data. It is also used to compare the real-time icing data with historical icing data and generate icing monitoring data. The power supply device is used to supply power to the infrared imaging sensor and the capture device.

2. The catenary icing monitoring device of claim 1, wherein, The power supply unit includes a power generation module, a charging power module, a battery system, and a discharging power module; The power generation module is connected to the charging power module; The battery system is connected to the charging power module and the discharging power module, respectively.

3. The catenary icing monitoring device of claim 2, wherein, The power generation module includes a photovoltaic panel and a wind turbine, both of which are connected to the charging power module.

4. The catenary icing monitoring device of claim 3, wherein, The charging power module includes a flyback module and a pulse width modulation rectifier module; The photovoltaic panel charges the battery system through the flyback module, and the wind turbine charges the battery system through the pulse width modulation rectifier module.

5. The catenary icing monitoring device of claim 2, wherein, The battery system includes a lithium battery, a battery management module, and a temperature control module, wherein the lithium battery is electrically connected to the battery management module and the temperature control module respectively.

6. The catenary icing monitoring device of claim 5, wherein, The positive electrode material of the lithium battery is lithium iron phosphate.

7. The catenary icing monitoring device of claim 5, wherein, The battery management module includes a voltage protection module and a temperature protection module, both of which are connected to the lithium battery. The voltage protection module is used to monitor the charging and discharging states of the lithium battery. The temperature protection module is used to monitor the operating temperature of the lithium battery.

8. The catenary icing monitoring device of claim 5, wherein, The temperature control module includes a thermocouple connected to the lithium battery, which is used to monitor the temperature of the lithium battery in real time.

9. The catenary icing monitoring device of claim 2, wherein, It also includes a server, which is connected to the comparison module, and the server is used to receive and store the icing monitoring data.

10. The catenary icing monitoring device of claim 9, wherein, It also includes a display module, which is connected to the server and is used to receive and display the icing monitoring data.

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