Methods, devices, equipment, media, and de-icing vehicles for detecting icing positions on contact rails

Abstract

This application provides a method, apparatus, equipment, medium, and de-icing vehicle for detecting the icing position of contact rails, applicable to the rail transit field. Icing state detection devices are installed on both sides of the de-icing vehicle. Two brushes in the icing state detection devices contact the contact rail. When there is no icing at the contact rail position under the two brushes, the voltage level signal at the digital input port of the industrial control computer in the icing state detection device is a high-level signal; when there is icing at the contact rail position under at least one of the two brushes, the voltage level signal is a low-level signal. After the de-icing vehicle starts moving, the running speed and voltage level signals are monitored in real time. Based on the monitored running speed, voltage level signals, and the monitoring time of each monitoring, the contact rail icing position is determined. This solution effectively improves detection efficiency by monitoring the running speed and voltage level signals during the de-icing vehicle's operation to determine the icing position.

Description

Technical Field

[0001] This application relates to the field of rail transit, and in particular to a method, device, equipment, medium, and de-icing vehicle for detecting the icing position of a contact rail. Background Technology

[0002] Urban rail transit, as a vital infrastructure related to the national economy and people's livelihood, has received close attention. In urban rail transit, the contact rail is an indispensable component; it is the device that transmits electrical energy to the electric traction vehicles in the urban rail transit system.

[0003] In existing technologies, contact rails may freeze in cold weather, affecting train operation, necessitating the use of de-icing vehicles. To reduce energy consumption, the de-icing vehicle can activate de-icing coils at locations on the contact rail where ice has accumulated. The detection of icing locations is typically done manually.

[0004] In summary, existing methods for detecting icing locations on contact rails typically rely on manual methods, where workers directly observe the icing positions on the contact rail, resulting in low efficiency. Summary of the Invention

[0005] This application provides a method, apparatus, equipment, medium, and de-icing vehicle for detecting the icing position of a contact rail, which addresses the problem that existing methods for detecting the icing position of contact rails typically rely on manual methods, where workers directly observe the icing position in the contact rail, resulting in low efficiency.

[0006] In a first aspect, embodiments of this application provide a contact rail icing position detection method, applied to an ice-melting vehicle. An icing state detection device is installed on each side of the ice-melting vehicle. Each icing state detection device includes a first power supply, a first brush, a second brush, a resistor, a current relay, a second power supply, and an industrial control computer.

[0007] The negative terminal of the first power supply is connected to the first brush, the positive terminal of the first power supply is connected to the first end of the resistor, the second end of the resistor is connected to the current input port of the current relay, and the current output port of the current relay is connected to the second brush.

[0008] The first contact port of the current relay is connected to the positive terminal of the second power supply, the second contact port of the current relay is connected to the digital input port of the industrial control computer, and the negative terminal of the second power supply is connected to the ground port of the industrial control computer.

[0009] The current relay is used to connect the first contact port and the second contact port when the current value through the current input port and the current output port is greater than a preset operating current threshold.

[0010] The method includes:

[0011] After the de-icing vehicle starts from the starting point of the operating route, the operating speed and the level signal of the digital input port of the industrial control computer in the icing condition detection device in operation are monitored in real time. The level signal is either a high level signal or a low level signal. When there is a contact rail under the first brush and the second brush of one of the two icing condition detection devices, the first brush and the second brush are in contact with the contact rail, and the icing condition detection device corresponding to the first brush and the second brush is in operation.

[0012] The location of the contact rail icing is determined based on the monitored operating speed, voltage level signals, and the monitoring time of each monitoring.

[0013] In one specific implementation, determining the contact rail icing location based on the monitored operating speed, voltage level signal, and the monitoring time of each monitored operating speed and voltage level signal includes:

[0014] Based on the operating speed and the monitoring time, a speed-time relationship graph is determined;

[0015] Based on the level signal and the monitoring time, a relationship diagram between the level signal and time is determined;

[0016] Based on the velocity-time graph, the position-time graph is determined;

[0017] Based on the relationship diagram between position and time and the relationship diagram between level signal and time, determine the relationship diagram between level signal and position;

[0018] In the relationship diagram between the level signal and the position, the position corresponding to the low level signal is determined as the contact rail icing position.

[0019] In one specific embodiment, after determining the contact rail icing location based on the monitored operating speed, voltage level signal, and the monitoring time of each monitoring of the operating speed and voltage level signal, the method further includes:

[0020] Based on the relationship between the signal level and time, determine the duration percentage of the high-level signal;

[0021] The icing status of the contact rail is determined based on the stated duration percentage.

[0022] In one specific implementation, determining the icing state of the contact rail based on the duration percentage includes:

[0023] If the duration percentage is 1, then the icing state is determined to be no icing.

[0024] If the duration percentage is greater than 0 and less than 1, then the icing state is determined to be intermittent icing.

[0025] If the duration percentage is 0, then the icing state is determined to be completely iced.

[0026] In one specific embodiment, after the ice-melting vehicle starts traveling from the starting point of the operating route, and after real-time monitoring of the operating speed and the level signal of the digital input port of the industrial control computer, the method further includes:

[0027] When the detected level signal is a low level signal, the current start time is determined;

[0028] The distance traveled by the ice-melting vehicle from its position at the starting point is calculated in real time.

[0029] When the driving distance reaches the preset ice-melting distance, the ice-melting coil on the same side as the first brush in the ice-covering state detection device that is in operation is controlled to work.

[0030] Secondly, embodiments of this application provide an icing state detection device, comprising:

[0031] First power supply, first brush, second brush, resistor, current relay, second power supply, industrial control computer;

[0032] The negative terminal of the first power supply is connected to the first brush, the positive terminal of the first power supply is connected to the first end of the resistor, the second end of the resistor is connected to the current input port of the current relay, and the current output port of the current relay is connected to the second brush.

[0033] The first contact port of the current relay is connected to the positive terminal of the second power supply, the second contact port of the current relay is connected to the digital input port of the industrial control computer, and the negative terminal of the second power supply is connected to the ground port of the industrial control computer.

[0034] Thirdly, embodiments of this application provide a contact rail icing position detection device, comprising:

[0035] The monitoring module is used to monitor the running speed in real time after the ice-melting truck starts from the starting point of the running route, as well as the level signal of the digital input port of the industrial control computer in the ice-covering state detection equipment that is in operation. The level signal is either a high-level signal or a low-level signal. When there is a contact rail under the first brush and the second brush of one of the two ice-covering state detection devices, the first brush and the second brush are in contact with the contact rail, and the ice-covering state detection devices corresponding to the first brush and the second brush are in operation.

[0036] The processing module is used to determine the icing location of the contact rail based on the monitored operating speed, level signal, and the monitoring time of each monitoring of the operating speed and level signal.

[0037] Fourthly, embodiments of this application provide an ice-melting vehicle, comprising:

[0038] Processor, memory, communication interface, speed sensor, two icing status detection devices;

[0039] Each icing condition detection device includes a first power supply, a first brush, a second brush, a resistor, a current relay, a second power supply, and an industrial control computer;

[0040] The negative terminal of the first power supply is connected to the first brush, the positive terminal of the first power supply is connected to the first end of the resistor, the second end of the resistor is connected to the current input port of the current relay, and the current output port of the current relay is connected to the second brush.

[0041] The first contact port of the current relay is connected to the positive terminal of the second power supply, the second contact port of the current relay is connected to the digital input port of the industrial control computer, and the negative terminal of the second power supply is connected to the ground port of the industrial control computer.

[0042] The current relay is used to connect the first contact port and the second contact port when the current value through the current input port and the current output port is greater than a preset operating current threshold.

[0043] The memory is used to store the executable instructions of the processor;

[0044] The processor is configured to execute the contact rail icing position detection method according to any one of the first aspects by executing the executable instructions.

[0045] Fifthly, embodiments of this application provide a readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the contact rail icing position detection method described in any of the first aspects.

[0046] In a sixth aspect, embodiments of this application provide a computer program product, including a computer program, which, when executed by a processor, is used to implement the contact rail icing position detection method described in any of the first aspects.

[0047] The contact rail icing position detection method, apparatus, equipment, medium, and de-icing vehicle provided in this application embodiment utilize icing state detection equipment installed on both sides of the de-icing vehicle. Two brushes in the icing state detection equipment contact the contact rail. When there is no icing at the contact rail position under the two brushes, the digital input signal of the industrial control computer in the icing state detection equipment is a high-level signal; when there is icing at the contact rail position under at least one of the two brushes, the signal is a low-level signal. Therefore, after the de-icing vehicle starts moving from the starting point of the operating line, the operating speed and the digital input signal of the industrial control computer in the icing state detection equipment can be monitored in real time. Based on the monitored operating speed, the digital input signal, and the monitoring time of each monitoring, the contact rail icing position can be determined. This solution effectively improves detection efficiency by monitoring the operating speed and the digital input signal of the industrial control computer in the icing state detection equipment to determine the icing position. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A schematic diagram illustrating a scenario for the contact rail icing location detection method provided in this application;

[0050] Figure 2 A schematic diagram of the icing condition detection device provided in this application;

[0051] Figure 3 A schematic diagram of the contact between the brush and the contact rail in the icing condition detection device provided in this application;

[0052] Figure 4a This is a flowchart illustrating an embodiment of the contact rail icing position detection method provided in this application.

[0053] Figure 4b The speed versus time graph provided for this application;

[0054] Figure 4c The diagram showing the relationship between the level signal and time provided in this application;

[0055] Figure 4d The location-time relationship diagram provided for this application;

[0056] Figure 4e The diagram showing the relationship between the level signal and the position provided in this application;

[0057] Figure 5 This is a flowchart illustrating Embodiment 2 of the contact rail icing position detection method provided in this application;

[0058] Figure 6 This is a flowchart illustrating Embodiment 3 of the contact rail icing position detection method provided in this application;

[0059] Figure 7 A schematic diagram of an embodiment of the contact rail icing position detection device provided in this application;

[0060] Figure 8 This is a structural schematic diagram of an ice-melting vehicle provided in this application. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments made by those skilled in the art under the guidance of these embodiments are within the scope of protection of this application.

[0062] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0063] With the development of technology, the de-icing method for contact rails in urban rail transit has evolved from manual de-icing to the use of de-icing vehicles.

[0064] In existing technologies, contact rails may freeze in cold weather, affecting train operation, necessitating the use of de-icing vehicles. To reduce energy consumption, the de-icing vehicle activates de-icing coils at locations on the contact rail where ice has accumulated. However, detecting icing locations is typically done manually, with workers directly observing the ice-covered areas, leading to low efficiency.

[0065] To address the problems existing in the prior art, the inventors, during their research on contact rail icing position detection methods, discovered that an icing state detection device can be designed. This device has two brushes in contact with the contact rail. When there is no icing under the brushes, the digital input signal of the industrial control computer in the icing state detection device is a high-level signal; when at least one of the brushes is icing, the signal is a low-level signal. Furthermore, after the de-icing vehicle starts moving from the starting point of the route, the operating speed and the digital input signal of the industrial control computer in the icing state detection device are monitored in real time. Based on the monitored operating speed, signal level, and the monitoring time of each detection, the contact rail icing position is determined, effectively improving detection efficiency. Based on the above inventive concept, the contact rail icing position detection scheme of this application was designed.

[0066] For example, Figure 1 This is a schematic diagram illustrating a scenario for the contact rail icing location detection method provided in this application, such as... Figure 1 As shown, the application scenario may include: traveling rail 101, contact rail 102, and ice melting vehicle 103.

[0067] For example, in Figure 1 In the application scenario shown, the ice-melting vehicle 103 can travel on the travel rail 101. The ice-melting vehicle 103 has multiple power supplies, each power supply corresponding to two ice-melting coils connected to it. The two ice-melting coils corresponding to each power supply are installed on the left and right sides of the ice-melting vehicle, respectively, with the ice-melting coils located directly above the contact rail. The figure shows four ice-melting coils: ice-melting coil 104, ice-melting coil 105, ice-melting coil 106, and ice-melting coil 107. An icing status detection device is installed on each side of the ice-melting vehicle 103. Each icing status detection device includes two brushes and an industrial control computer. When there is no ice at the contact rail position under the two brushes, the level signal of the digital input port of the industrial control computer in the icing status detection device is a high-level signal; when there is ice at the contact rail position under at least one of the two brushes, the level signal is a low-level signal. The figure shows four brushes: brush 108, brush 109, brush 110, and brush 111. A speed sensor is also installed in the ice-melting vehicle 103.

[0068] After the ice-melting truck 103 starts running from the starting point of the route, the running speed is monitored in real time by a speed sensor, and the level signal of the digital input port of the industrial control computer is monitored by an ice-covering status detection device that is in operation.

[0069] Then, based on the monitored operating speed, level signal, and the monitoring time of each monitoring of the operating speed and level signal, the location of the contact rail icing is determined.

[0070] It should be noted that, Figure 1 This is merely a schematic diagram illustrating one application scenario provided by an embodiment of this application. This embodiment of the application does not necessarily represent an application scenario. Figure 1 The document does not limit the actual form of the various devices included, nor does it specify the form of the devices. Figure 1 The interaction methods between devices are limited, and can be set according to actual needs in the specific application of the solution.

[0071] The technical solution of this application will now be described in detail through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0072] Figure 2 This is a schematic diagram of the icing condition detection device provided in this application, as shown below. Figure 2 As shown, the icing state detection device includes a first power supply 21, a first brush 22, a second brush 23, a resistor 24, a current relay 25, a second power supply 26, and an industrial control computer 27.

[0073] The negative terminal of the first power supply 21 is connected to the first brush 22, the positive terminal of the first power supply 21 is connected to the first end of the resistor 24, the second end of the resistor 24 is connected to the current input port 251 of the current relay 25, and the current output port 252 of the current relay 25 is connected to the second brush 23.

[0074] The first contact port 253 of the current relay 25 is connected to the positive terminal of the second power supply 26, the second contact port 254 of the current relay 25 is connected to the digital input port 271 of the industrial control computer 27, and the negative terminal of the second power supply 26 is connected to the ground port 272 of the industrial control computer 27.

[0075] The current relay 26 is used to connect the first contact port 253 and the second contact port 254 when the current value passing through the current input port 251 and the current output port 252 is greater than a preset operating current threshold; and to disconnect the first contact port 253 and the second contact port 254 when the current value is less than or equal to the preset operating current threshold.

[0076] For example, in Figure 2On this basis, Figure 3 This is a schematic diagram of the contact between the brush and the contact rail of the icing condition detection device provided in this application, as shown below. Figure 3 As shown, the black strip is the contact rail, and the first brush 22 and the second brush 23 are in contact with the contact rail.

[0077] When there is no ice accumulation at the contact rail position under the first brush 22 and the second brush 23, the first brush 22 and the second brush 23 are connected. The first brush 22, the first power supply 21, the resistor 24, the current relay 25, and the second brush 23 form a circuit. The current value through the current input port 251 and the current output port 252 is greater than the preset operating current threshold. The first contact port 253 and the second contact port 254 are connected. The level signal of the digital input port 271 of the industrial control computer 27 is a high level signal.

[0078] When ice accumulates at the contact rail position under at least one of the first brushes 22 and the second brush 23, the first brush 22 and the second brush 23 are disconnected. The first brush 22, the first power supply 21, the resistor 24, the current relay 25, and the second brush 23 form an open circuit. The current value through the current input port 251 and the current output port 252 is less than the preset operating current threshold. The first contact port 253 and the second contact port 254 are disconnected, and the level signal of the digital input port 271 of the industrial control computer 27 is a low level signal.

[0079] For example, the first power supply can be an isolated power supply with parameters such as: output voltage of 36V, input voltage of 110V, and output power of 200W. The resistor can be a 10-ohm corrugated resistor, its function being to prevent short circuits when there is no ice accumulation at the contact rail positions under the two brushes. The parameters of the current relay can be: operating voltage of 36V, monitoring current of 0.5-5A, and an adjustable preset operating current threshold. A status indicator light can also be installed on the current relay panel to display the contact status, and the electrical life of the current relay is greater than 100,000 cycles. The first and second brushes can be graphite brushes, and the distance between the two brushes is not less than 1 meter.

[0080] It should be noted that the above examples are merely illustrations of isolated power supplies, resistors, current relays, and brushes. The embodiments of this application do not limit the specific form and corresponding parameters of isolated power supplies, resistors, current relays, and brushes, and can be selected according to actual conditions.

[0081] It should be noted that the preset operating current threshold can be 2A, 3A, 4A, etc. This application embodiment does not limit the preset operating current threshold, and it can be set according to the actual situation.

[0082] The icing state detection device provided in this embodiment has a high-level signal at the digital input port of the industrial control computer when there is no icing at the contact rail position under the two brushes; when there is icing at the contact rail position under at least one of the two brushes, the level signal is a low-level signal. Thus, by determining whether there is icing on the contact rail, the device can effectively improve the detection accuracy.

[0083] Figure 4a This is a flowchart illustrating a first embodiment of the contact rail icing position detection method provided in this application. This embodiment describes how an ice-melting vehicle travels along a route, and the icing state detection device and speed sensor are used to determine the icing position of the contact rail. The method in this embodiment can be implemented through software, hardware, or a combination of both. Figure 4a As shown, the contact rail icing location detection method specifically includes the following steps:

[0084] S401: After the ice-melting truck starts running from the starting point of the route, it monitors the running speed in real time, as well as the level signal of the digital input port of the industrial control computer in the ice-covering status detection equipment that is in operation.

[0085] An icing condition detection device is installed on each side of the de-icing vehicle. When a contact rail is present under the first and second brushes corresponding to one of the two icing condition detection devices, the first and second brushes are in contact with the contact rail, and the corresponding icing condition detection device is in operation. To ensure sufficient contact between the first and second brushes and the contact rail, the two brushes can be fixed to the side of the bogie, directly above the contact rail, and a spring device can be used to ensure reasonable contact pressure between the brushes and the contact rail.

[0086] In this step, after the de-icing truck starts moving from the starting point of the route, the operating speed can be monitored in real time via a speed sensor, as well as the level signal of the digital input port of the industrial control computer in the icing status detection equipment. The level signal can be either a high-level signal or a low-level signal.

[0087] Each time the operating speed and level signal are detected, the corresponding relationship between the monitoring time and the detected operating speed and level signal is established and stored.

[0088] S402: Determine the location of the contact rail icing based on the monitored operating speed, level signal, and the monitoring time of each monitoring of the operating speed and level signal.

[0089] In this step, after the de-icing vehicle obtains the monitored operating speed and level signals, it can determine the icing position of the contact rail based on the monitored operating speed, level signals, and the monitoring time of each monitoring of the operating speed and level signals.

[0090] Specifically, based on the operating speed and the monitoring time, a speed-time relationship graph is determined. For example, Figure 4b The speed-time graph provided for this application, such as Figure 4b As shown, the ice-melting truck accelerates uniformly from 0 km / min to 1 km / min within 0-4 minutes; and maintains a constant speed of 1 km / min within 4-16 minutes.

[0091] Based on the level signal and the monitoring time, a graph showing the relationship between the level signal and time is determined. For example, Figure 4c The relationship between the level signal and time provided in this application is as follows: Figure 4c As shown, 0-4 minutes and 8-16 minutes are high-level signals, and 4-8 minutes are low-level signals.

[0092] Based on the velocity-time graph, the position-time graph can be determined. From the velocity-time graph, the corresponding graphical expression can be determined, and then integration can be performed to obtain the function expression for position and time, thus yielding the position-time graph. For example, Figure 4d The location-time relationship diagram provided for this application, such as Figure 4d As shown, the ice-melting truck accelerates at a constant speed from 0 to 4 minutes, reaching 2 km in the 4th minute; it travels at a constant speed from 4 to 16 minutes, reaching 14 km in the 16th minute.

[0093] Based on the position versus time graph and the level signal versus time graph, determine the level signal versus position graph. For example, Figure 4e The relationship diagram between the level signal and the position provided in this application is as follows: Figure 4e As shown, the signal level is high at 0-2km and 6-14km, and low at 2-6km.

[0094] Since the signal level is low when there is ice accumulation under the brush, the position corresponding to the low-level signal in the relationship diagram between the signal level and the position is determined as the contact rail ice accumulation position.

[0095] It should be noted that after obtaining the location of the ice accumulation on the contact rail, the ice-melting vehicle can also send this location to the user's terminal device for viewing. The ice-melting vehicle can also perform precise ice melting based on the location of the ice accumulation on the contact rail.

[0096] The contact rail icing location detection method provided in this embodiment uses an ice-melting vehicle to monitor its operating speed via a speed sensor and an icing status detection device to monitor the voltage level signal of the digital input port of an industrial control computer. The icing location is then determined by monitoring the operating speed and the voltage level signal. Compared to the manual detection methods in existing technologies, this application determines the contact rail icing location by monitoring the operating speed and voltage level signal. The icing location is obtained simply by the ice-melting vehicle passing over the contact rail, effectively improving detection efficiency.

[0097] Figure 5 This is a flowchart illustrating a second embodiment of the contact rail icing position detection method provided in this application. Based on the above embodiments, this application further explains how the de-icing vehicle can also determine the icing state of the contact rail. For example... Figure 5 As shown, the contact rail icing location detection method specifically includes the following steps:

[0098] S501: Determine the duration percentage of the high-level signal based on the relationship between the level signal and time.

[0099] In this step, after the de-icing vehicle obtains the relationship between the level signal and time, in order to obtain the icing state of the contact rail, it is necessary to determine the duration of the high-level signal.

[0100] For example, in Figure 4c Based on this, we can obtain that 0-4min and 8-16min are high-level signals, the duration of the high-level signal is 12 minutes, and the total duration is 16 minutes. Therefore, the duration of the high-level signal accounts for 12 / 16 = 0.75.

[0101] It should be noted that the above example is only an illustration of the process of calculating the duration of the high-level signal. This application does not limit the time period of the high-level signal, the duration of the high-level signal, or the total duration, which can be determined according to the actual situation.

[0102] S502: Determine the icing status of the contact rail based on the duration percentage.

[0103] In this step, after the de-icing vehicle obtains the time percentage, the icing status of the contact rail can be determined based on the time percentage.

[0104] If the duration percentage is 1, it means that all the level signals monitored within the total duration are high-level signals, and there is no ice on the contact rail. Therefore, the icing status is determined to be no ice.

[0105] If the duration percentage is 0, it means that all the level signals monitored within the total duration are low-level signals, and the contact rail is completely covered with ice. Therefore, the icing state is determined to be complete icing.

[0106] If the duration percentage is greater than 0 and less than 1, it means that among the level signals monitored within the total duration, there are both low-level and high-level signals. Some areas on the contact rail are not covered with ice, while others are covered with ice. Therefore, the icing status is determined to be intermittent icing.

[0107] The contact rail icing position detection method provided in this embodiment determines the icing state of the contact rail by measuring the duration of the high-level signal, effectively improving the accuracy of detecting the icing state of the contact rail.

[0108] Figure 6 This is a flowchart illustrating Embodiment 3 of the contact rail icing position detection method provided in this application. Based on the above embodiments, this embodiment describes the icing process performed when a low-level signal is detected after the de-icing vehicle starts driving from the starting point of the operating line. Figure 6 As shown, the contact rail icing location detection method specifically includes the following steps:

[0109] S601: When a low-level signal is detected, determine the current start time.

[0110] In this step, after the de-icing truck starts running from the starting point of the route, it will monitor the level signal of the digital input port of the industrial control computer. When a low level signal is detected, it indicates that there is ice under the brush and de-icing is required. The current starting time is determined first.

[0111] S602: Calculates in real time the distance traveled by the ice-melting truck from its starting position at the origin.

[0112] In this step, because there is a distance between the brushes and the de-icing coil, if the de-icing coil is activated when a low-level signal is detected, it will waste energy before the coil reaches the icing position. Therefore, the de-icing coil needs to be activated only when it reaches the icing position. To determine when the de-icing coil reaches the icing position, the distance traveled by the de-icing truck from its starting position needs to be calculated in real time.

[0113] The operating speed can be obtained through a speed sensor, and then the travel distance can be calculated by combining the travel time.

[0114] S603: When the driving distance reaches the preset ice-melting distance, the ice-melting coil on the same side as the first brush in the ice-covering state detection device that is in operation is controlled to work.

[0115] In this step, the ice-melting truck calculates the travel distance in real time. When the travel distance reaches the preset ice-melting distance, it indicates that the ice-melting coil has reached the icing position. The ice-melting coil, which is on the same side as the first brush in the icing state detection device that is in operation, is then controlled to work to melt the ice.

[0116] It should be noted that the preset ice-melting distance is the distance between the nearest brush and the ice-melting coil, which can be 1 meter, 2 meters, 5 meters, etc. This application embodiment does not limit the preset ice-melting distance, and it can be determined according to the actual situation.

[0117] The contact rail icing position detection method provided in this embodiment can effectively save energy by melting ice when a low-level signal is detected and the ice-melting coil reaches the ice-melting position. Ice melting can be achieved during the detection of the contact rail icing position, which effectively improves the ice melting efficiency.

[0118] The following are embodiments of the apparatus described in this application, which can be used to execute the embodiments of the method described in this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the method described in this application.

[0119] Figure 7 This is a schematic diagram of an embodiment of the contact rail icing position detection device provided in this application; the device can be integrated into the de-icing vehicle in the above method embodiment, or it can be implemented using the de-icing vehicle in the above method embodiment. Figure 7 As shown, the contact rail icing position detection device 70 includes:

[0120] The monitoring module 71 is used to monitor the running speed and the level signal of the digital input port of the industrial control computer in the icing condition detection device in real time after the ice-melting vehicle starts running from the starting point of the running line. The level signal is either a high level signal or a low level signal. When there is a contact rail under the first brush and the second brush of one of the two icing condition detection devices, the first brush and the second brush are in contact with the contact rail, and the icing condition detection device corresponding to the first brush and the second brush is in working condition.

[0121] The processing module 72 is used to determine the icing position of the contact rail based on the monitored operating speed, level signal, and the monitoring time of each monitoring of the operating speed and level signal.

[0122] Furthermore, the processing module 72 is specifically used for:

[0123] Based on the operating speed and the monitoring time, a speed-time relationship graph is determined;

[0124] Based on the level signal and the monitoring time, a relationship diagram between the level signal and time is determined;

[0125] Based on the velocity-time graph, the position-time graph is determined;

[0126] Based on the relationship diagram between position and time and the relationship diagram between level signal and time, determine the relationship diagram between level signal and position;

[0127] In the relationship diagram between the level signal and the position, the position corresponding to the low level signal is determined as the contact rail icing position.

[0128] Furthermore, the processing module 72 is also used for:

[0129] Based on the relationship between the signal level and time, determine the duration percentage of the high-level signal;

[0130] The icing status of the contact rail is determined based on the stated duration percentage.

[0131] Furthermore, the processing module 72 is also used for:

[0132] If the duration percentage is 1, then the icing state is determined to be no icing.

[0133] If the duration percentage is greater than 0 and less than 1, then the icing state is determined to be intermittent icing.

[0134] If the duration percentage is 0, then the icing state is determined to be completely iced.

[0135] Furthermore, the processing module 72 is also used for:

[0136] When the monitoring module 71 detects that the level signal is a low level signal, the current starting time is determined.

[0137] The distance traveled by the ice-melting vehicle from its position at the starting point is calculated in real time.

[0138] When the driving distance reaches the preset ice-melting distance, the ice-melting coil on the same side as the first brush in the ice-covering state detection device that is in operation is controlled to work.

[0139] The contact rail icing position detection device provided in this embodiment is used to execute the technical solution in any of the aforementioned method embodiments. Its implementation principle and technical effect are similar, and will not be described again here.

[0140] Figure 8 This is a structural schematic diagram of an ice-melting vehicle provided in this application. Figure 8 As shown, the ice-melting truck 80 includes:

[0141] Processor 81, memory 82, communication interface 83, speed sensor 84, and two icing state detection devices, namely icing state detection device 85 and icing state detection device 86.

[0142] Each icing condition detection device includes a first power supply, a first brush, a second brush, a resistor, a current relay, a second power supply, and an industrial control computer;

[0143] The negative terminal of the first power supply is connected to the first brush, the positive terminal of the first power supply is connected to the first end of the resistor, the second end of the resistor is connected to the current input port of the current relay, and the current output port of the current relay is connected to the second brush.

[0144] The first contact port of the current relay is connected to the positive terminal of the second power supply, the second contact port of the current relay is connected to the digital input port of the industrial control computer, and the negative terminal of the second power supply is connected to the ground port of the industrial control computer.

[0145] The current relay is used to connect the first contact port and the second contact port when the current value through the current input port and the current output port is greater than a preset operating current threshold.

[0146] The memory 82 is used to store the executable instructions of the processor 81;

[0147] The processor 81 is configured to execute the technical solution of the ice-melting vehicle in any of the foregoing method embodiments by executing the executable instructions.

[0148] Optionally, the memory 82 can be either standalone or integrated with the processor 81.

[0149] Optionally, when the memory 82 is a device independent of the processor 81, the ice-melting vehicle 80 may further include:

[0150] Bus 87, speed sensor 84, icing state detection device 85, icing state detection device 86, memory 82 and communication interface 83 are connected to processor 81 through bus 87 and complete mutual communication. Communication interface 83 is used to communicate with other devices.

[0151] Optionally, the communication interface 83 can be implemented using a transceiver. The communication interface is used to enable communication between the database access device and other devices (e.g., clients, read-write databases, and read-only databases). The memory may include random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device.

[0152] Bus 87 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0153] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0154] The ice-melting vehicle is used to implement the technical solution of the ice-melting vehicle in any of the aforementioned method embodiments. Its implementation principle and technical effect are similar, and will not be repeated here.

[0155] This application also provides a readable storage medium storing a computer program thereon, which, when executed by a processor, implements the technical solutions provided in any of the foregoing method embodiments.

[0156] This application also provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the technical solutions provided in any of the foregoing method embodiments.

[0157] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for detecting the icing position of a contact rail, characterized in that, Applied to ice-melting trucks, each ice-covering state detection device is installed on both sides of the ice-melting truck. Each ice-covering state detection device includes a first power supply, a first brush, a second brush, a resistor, a current relay, a second power supply, and an industrial control computer. The negative terminal of the first power supply is connected to the first brush, the positive terminal of the first power supply is connected to the first end of the resistor, the second end of the resistor is connected to the current input port of the current relay, and the current output port of the current relay is connected to the second brush. The first contact port of the current relay is connected to the positive terminal of the second power supply, the second contact port of the current relay is connected to the digital input port of the industrial control computer, and the negative terminal of the second power supply is connected to the ground port of the industrial control computer. The current relay is used to connect the first contact port and the second contact port when the current value through the current input port and the current output port is greater than a preset operating current threshold. The method includes: After the de-icing vehicle starts from the starting point of the operating route, the operating speed and the level signal of the digital input port of the industrial control computer in the icing condition detection device in operation are monitored in real time. The level signal is either a high level signal or a low level signal. When there is a contact rail under the first brush and the second brush of one of the two icing condition detection devices, the first brush and the second brush are in contact with the contact rail, and the icing condition detection device corresponding to the first brush and the second brush is in operation. The location of the contact rail icing is determined based on the monitored operating speed, level signal, and the monitoring time of each monitoring of the operating speed and level signal; Based on the level signal and the monitoring time, a relationship diagram between the level signal and time is determined; Based on the relationship between the signal level and time, determine the duration percentage of the high-level signal; If the duration percentage is 1, then the icing state is determined to be no icing. If the duration percentage is greater than 0 and less than 1, then the icing state is determined to be intermittent icing. If the duration percentage is 0, then the icing state is determined to be completely iced.

2. The method according to claim 1, characterized in that, The determination of the contact rail icing location based on the monitored operating speed, voltage level signal, and the monitoring time of each monitoring of the operating speed and voltage level signal includes: Based on the operating speed and the monitoring time, a speed-time relationship graph is determined; Based on the level signal and the monitoring time, a relationship diagram between the level signal and time is determined; Based on the velocity-time graph, the position-time graph is determined; Based on the relationship diagram between position and time and the relationship diagram between level signal and time, determine the relationship diagram between level signal and position; In the relationship diagram between the level signal and the position, the position corresponding to the low level signal is determined as the contact rail icing position.

3. The method according to claim 1, characterized in that, After the ice-melting vehicle starts traveling from the starting point of the operating route, and after real-time monitoring of the operating speed and the level signal of the digital input port of the industrial control computer, the method further includes: When the detected level signal is a low level signal, the current start time is determined; The distance traveled by the ice-melting vehicle from its position at the starting point is calculated in real time. When the driving distance reaches the preset ice-melting distance, the ice-melting coil on the same side as the first brush in the ice-covering state detection device that is in operation is controlled to work.

4. A contact rail icing position detection device, characterized in that, The contact rail icing position detection method according to any one of claims 1 to 3 is adopted.

5. An ice-melting vehicle, characterized in that, include: Processor, memory, communication interface, speed sensor, two icing status detection devices; Each icing condition detection device includes a first power supply, a first brush, a second brush, a resistor, a current relay, a second power supply, and an industrial control computer; The negative terminal of the first power supply is connected to the first brush, the positive terminal of the first power supply is connected to the first end of the resistor, the second end of the resistor is connected to the current input port of the current relay, and the current output port of the current relay is connected to the second brush. The first contact port of the current relay is connected to the positive terminal of the second power supply, the second contact port of the current relay is connected to the digital input port of the industrial control computer, and the negative terminal of the second power supply is connected to the ground port of the industrial control computer. The current relay is used to connect the first contact port and the second contact port when the current value through the current input port and the current output port is greater than a preset operating current threshold. The memory is used to store the executable instructions of the processor; The processor is configured to execute the contact rail icing position detection method according to any one of claims 1 to 3 by executing the executable instructions.

6. A readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the contact rail icing position detection method according to any one of claims 1 to 3.

7. A computer program product, characterized in that, Includes a computer program, which, when executed by a processor, is used to implement the contact rail icing position detection method according to any one of claims 1 to 3.

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