Road surface ice melting system

Abstract

This application relates to the field of road de-icing technology, and more particularly to a road surface de-icing system. The road surface de-icing system includes a temperature-measuring optical fiber, a DTS (Digital Transmission System) host, a control terminal, and multiple de-icing devices. The temperature-measuring optical fiber is laid on both sides of the road surface base layer; multiple de-icing devices are installed on both sides of the road surface; the temperature-measuring optical fiber is divided into multiple temperature-measuring segments, each corresponding to one of the de-icing devices; the DTS host can acquire the temperature values ​​detected by the multiple temperature-measuring segments in real time. When the temperature value of one or more temperature-measuring segments acquired by the DTS host reaches the freezing temperature threshold, the control terminal controls the de-icing device corresponding to the temperature-measuring segment that has reached the freezing temperature threshold to activate, thereby spraying hot water onto the road surface through spray heads. The road surface de-icing system of this application solves the problems of significant misjudgment in existing road surface icing monitoring systems, the excessive cost of spraying organic de-icing agents, and the corrosive damage to roads caused by spraying inorganic de-icing agents.

Description

Technical Field

[0001] This application relates to the field of road de-icing technology, and in particular to a road surface de-icing system. Background Technology

[0002] Winter road icing causes frequent accidents, significantly impacting road traffic, endangering driving safety, and affecting people's travel. Numerous multi-vehicle collisions have occurred across the country on icy and snowy roads, resulting in serious casualties and property damage. Such accidents tend to increase during rainy and snowy weather, making prevention a top priority.

[0003] In winter, outdoor temperatures are low at night and in the early morning, making it easy for icing to occur, especially in dark and damp areas, tunnel entrances, and overpasses. Real-time monitoring of road icing in low temperatures and effective de-icing after icing becomes crucial. Patent CN109887230A discloses a control method for a road icing early warning and automated handling system. This method uses weather forecasts issued by the meteorological bureau to issue early warnings for road icing, then estimates the time required for icing by monitoring road sections. If icing occurs, de-icing agents are sprayed; if no icing occurs, the system may stop operating and wait for further weather updates. This invention provides an icing prediction model (i.e., how long until icing occurs) and a formula for calculating the amount of de-icing agent to be sprayed. However, the system's reliable operation depends on a large amount of data from weather forecasts and road monitoring, relying on too many parameters. Since environmental parameters vary across different road sections, the system is prone to errors. Furthermore, if organic de-icing agents are sprayed, the cost is too high. Although inorganic de-icing agents are inexpensive, they cause corrosive damage to roads, making them unsuitable for large-scale use. Summary of the Invention

[0004] The purpose of this application is to provide a road de-icing system that solves the problems of existing road icing monitoring systems having a large number of misjudgments, and the high cost of spraying organic de-icing agents, and the corrosive damage to roads caused by spraying inorganic de-icing agents.

[0005] This application provides a road surface de-icing system, which includes a temperature-measuring optical fiber, a DTS (Digital Transmission System) host, a control terminal, and multiple de-icing devices. The temperature-measuring optical fiber is laid on both sides of the road surface base layer to monitor the road surface temperature in real time. Multiple de-icing devices are located on both sides of the road surface, each including a spray head. The temperature-measuring optical fiber is divided into multiple temperature-measuring segments, each corresponding to one of the de-icing devices. The signal input terminal of the DTS host is connected to the temperature-measuring optical fiber, and the signal output terminal is connected to the control terminal. The DTS host can acquire the temperature values ​​detected by the multiple temperature-measuring segments in real time. When the temperature value of one or more of the temperature-measuring segments acquired by the DTS host reaches the freezing temperature threshold, the DTS host sends alarm location information to the control terminal. The control terminal, based on the alarm location information, controls the de-icing device corresponding to the temperature-measuring segment that has reached the freezing temperature threshold to activate, thereby spraying hot water onto the road surface through the spray head.

[0006] In any of the above technical solutions, the road surface de-icing system further includes a cable tray; the cable tray is provided on both sides of the road base layer, and the temperature measuring optical fiber is laid on the cable tray.

[0007] In any of the above technical solutions, the distance between the temperature measuring optical fiber and the surface of the road surface is further 30cm.

[0008] In any of the above technical solutions, further, multiple de-icing devices are spaced apart on both sides of the road surface; the de-icing devices satisfy: C = 1 / 2L, R≥C; where C is the distance between two adjacent ice-melting devices, L is the width of the road surface, and R is the spray radius of the spray head.

[0009] In any of the above technical solutions, the road surface de-icing system further includes a hot water tank and a main valve, and the de-icing device further includes a start valve connected to the spray head; the hot water tank is connected to multiple start valves through the main valve, and when the temperature value of one or more of the temperature measurement segments obtained by the DTS host reaches the freezing temperature threshold, the control terminal controls the main valve and the start valve corresponding to the de-icing device to open, so as to spray hot water onto the road surface through the spray head.

[0010] In any of the above technical solutions, further, there are three hot water tanks, namely a first hot water tank, a second hot water tank, and a third hot water tank; all three hot water tanks are connected to multiple start valves through the main valve; the temperature of the hot water in the first hot water tank is between 20℃ and 30℃, the temperature of the hot water in the second hot water tank is between 45℃ and 55℃, and the temperature of the hot water in the third hot water tank is between 55℃ and 65℃; a temperature value less than or equal to 0℃ and greater than -15℃ is defined as a first-level warning threshold, a temperature value less than or equal to -15℃ and greater than -40℃ is defined as a second-level warning threshold, and a temperature value less than or equal to -40℃ and greater than -50℃ is defined as a third-level warning threshold; when the DTS host obtains... When the temperature value of the temperature measurement segment is within the first-level warning threshold, the control terminal controls the first hot water tank to connect with the main valve, and controls the main valve and the start valve of the corresponding ice-melting device to open; when the temperature value of the temperature measurement segment obtained by the DTS host is within the second-level warning threshold, the control terminal controls the second hot water tank to connect with the main valve, and controls the main valve and the start valve of all the ice-melting devices to open; when the temperature value of the temperature measurement segment obtained by the DTS host is within the third-level warning threshold, the control terminal controls the third hot water tank to connect with the main valve, and controls the main valve and the start valve of all the ice-melting devices to open.

[0011] In any of the above technical solutions, the control terminal further includes a display; the display is used to show the status of all the ice-melting devices.

[0012] In any of the above technical solutions, further, if the temperature value of the current temperature measurement segment obtained by the DTS host has reached the freezing temperature threshold, but the de-icing device corresponding to the current temperature measurement segment is not turned on, then the display shows that the current de-icing device is in a state of pending maintenance.

[0013] In any of the above technical solutions, the DTS host further includes a processing module; the processing module is set with the freezing temperature threshold, and the processing module can compare the temperature values ​​detected by multiple temperature measurement segments acquired by the DTS host with the freezing temperature threshold. When the temperature value of one or more temperature measurement segments reaches the freezing temperature threshold, the processing module sends alarm location information to the control terminal.

[0014] In any of the above technical solutions, the road surface de-icing system is further applied to the road surface of tunnels or viaducts.

[0015] Based on the above technical features, the beneficial effects of this application are as follows:

[0016] The temperature-sensing fiber optic cable of this application monitors the road surface temperature in real time along the path, using the road surface temperature detection as an early warning for icing. The DTS host of this application can set the road surface icing warning value. If the temperature-sensing fiber optic cable detects that the road surface temperature along the path is lower than the set icing temperature threshold, an alarm is triggered. The control terminal, based on the alarm location information, controls the de-icing device corresponding to the temperature-sensing section that has reached the icing temperature threshold to start, so as to spray hot water onto the road surface through the spray head.

[0017] As described above, when the road surface de-icing system of this application detects that the road surface temperature is below the freezing point, it automatically activates the de-icing device to simultaneously melt the iced area. The de-icing devices in each location can be turned on and off as needed without interference, making de-icing convenient and quick, and greatly solving the problem of road icing. Furthermore, this application uses hot water to melt the road surface, which, compared to traditional manual de-icing and de-icing agents, not only improves the efficiency of de-icing work and reduces accidents, but also causes no pollution to the road surface or the environment, making it a highly efficient and environmentally friendly de-icing method.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram showing the structural layout of a road de-icing system according to an embodiment of this application is provided.

[0021] Figure 2 A schematic diagram illustrating the principle of a road surface de-icing system according to an embodiment of this application is shown.

[0022] Figure 3 A schematic diagram of the spraying of an ice-melting device according to an embodiment of this application is shown.

[0023] Icons: 100 - Temperature measuring fiber optic cable; 200 - DTS main unit; 210 - GPIB interface; 300 - Control terminal; 400 - Ice melting device; 500 - Hot water tank; 600 - Main valve. Detailed Implementation

[0024] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0026] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0027] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0028] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0029] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0031] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0032] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0033] This application provides a road de-icing system, which solves the problems of existing road icing monitoring systems having a large number of misjudgments, and the high cost of spraying organic de-icing agents, and the corrosive damage to roads caused by spraying inorganic de-icing agents.

[0034] The following reference Figures 1 to 3 This application describes a road surface de-icing system according to some embodiments.

[0035] like Figure 1 and Figure 2As shown, the road surface de-icing system of this application includes a temperature measuring fiber optic cable 100, a DTS host 200, a control terminal 300, and multiple de-icing devices 400. The temperature-measuring fiber optic cable 100 is laid on both sides of the road base layer to monitor the road surface temperature in real time. Multiple de-icing devices 400 are installed on both sides of the road surface, each including a spray head. The temperature-measuring fiber optic cable 100 is divided into multiple temperature-measuring segments, each corresponding to one of the multiple de-icing devices 400. The signal input terminal of the DTS host 200 is connected to the temperature-measuring fiber optic cable 100, and the signal output terminal of the DTS host 200 is connected to the control terminal 300. The DTS host 200 can acquire the temperature values ​​detected by multiple temperature-measuring segments in real time. When the temperature value of one or more temperature-measuring segments acquired by the DTS host 200 reaches the freezing temperature threshold, the DTS host 200 sends alarm location information to the control terminal 300. Based on the alarm location information, the control terminal 300 controls the de-icing device 400 corresponding to the temperature-measuring segment that has reached the freezing temperature threshold to activate, thereby spraying hot water onto the road surface through the spray head.

[0036] In other words, the temperature-measuring fiber optic cable 100 of this application detects the road surface temperature in real time, using the detected road surface temperature as an early warning for icing. The DTS host 200 of this application can set the road surface icing warning value. If the temperature-measuring fiber optic cable 100 detects that the road surface temperature is lower than the set icing temperature threshold, an alarm is triggered. The control terminal 300, based on the alarm location information, controls the de-icing device 400 corresponding to the temperature-measuring section that has reached the icing temperature threshold to be turned on, so as to spray hot water onto the road surface through the spray head.

[0037] As described above, when the road surface temperature detected by the road de-icing system of this application is lower than the freezing point, the de-icing device 400 is automatically activated to simultaneously melt the ice in the icy area. The de-icing devices 400 in each location can be turned on and off as needed without interference, making de-icing convenient and quick, and greatly solving the problem of road icing. Furthermore, this application uses hot water to melt the road surface, which, compared to traditional manual de-icing and de-icing agents, not only improves the efficiency of de-icing work and reduces accidents, but also causes no pollution to the road surface or the environment, making it a highly efficient and environmentally friendly de-icing method.

[0038] It should be noted that the temperature measuring fiber 100 in this application uses distributed fiber optics, which mainly monitors the road surface temperature based on distributed fiber optics for Raman thermometry. Based on the road surface freezing point of 0°C, the road surface temperature value is used as the system control point. If the monitored temperature is lower than the freezing point, the snow melting device is automatically activated to simultaneously melt the snow and ice in the icy area.

[0039] During the installation of distributed optical fiber, the distributed optical fiber is laid on both sides of the road base layer, enabling real-time monitoring of the road surface temperature along the laying path. The signal input end of the DTS host 200 is connected to one end of the temperature-sensing optical fiber 100, and the signal output end of the DTS host 200 is connected to the control terminal 300 via the GPIB interface 210. Here, the temperature-sensing optical fiber 100 uses multimode optical fiber, and its layout should be consistent with the road surface direction to avoid redundancy. If the length of a single temperature-sensing optical fiber 100 is insufficient, multiple temperature-sensing optical fiber 100 connectors are fused together using a fusion splicer.

[0040] The DTS host 200 can acquire temperature values ​​from multiple temperature measurement segments in real time and display the detected temperature values ​​from multiple temperature measurement segments in real time through curves. Each temperature measurement segment corresponds to an ice-melting device 400. When the temperature value detected by a certain temperature measurement segment reaches the icing temperature threshold (indicating that the surface temperature of a certain road section is lower than the icing temperature threshold of 0℃), the DTS host 200 will transmit the alarm location to the control terminal 300. The control terminal 300 will then issue a command to the corresponding ice-melting device 400 according to the alarm location, thereby performing the work of dealing with road icing.

[0041] It should also be noted that the temperature-measuring optical fiber 100 of this application is arranged on both sides of the road base layer. The temperature-measuring optical fiber 100 indirectly detects the road surface temperature by detecting the surrounding temperature.

[0042] In the embodiments of this application, cable trays are provided on both sides of the road base layer, and the temperature-sensing optical fiber 100 is laid on the cable trays. The cable trays not only facilitate the installation of the temperature-sensing optical fiber 100, but also protect the temperature-sensing optical fiber 100.

[0043] In the embodiments of this application, the distance between the temperature-sensing optical fiber 100 and the surface of the road is 30cm. If the distance exceeds 30cm, the detection effect is poor; if the distance is less than 30cm, the temperature-sensing optical fiber 100 is easily damaged.

[0044] In addition, since the temperature measuring fiber optic cable 100 is laid inside the cable tray and is not directly attached to the road surface, there is a slight deviation between the road surface temperature and the detected temperature. Therefore, the set icing temperature threshold should be slightly higher than 0℃.

[0045] As an optimization, drainage ditches are set up on both sides of the road, and the temperature measuring fiber optic cable 100 should be installed higher than the drainage ditches.

[0046] In the embodiments of this application, such as Figure 1 and Figure 3 As shown, multiple ice-melting devices 400 are spaced apart on both sides of the road surface; the ice-melting devices 400 satisfy: C = 1 / 2L, R≥C; where C is the distance between two adjacent ice-melting devices 400, L is the width of the road surface, and R is the spray radius of the spray head.

[0047] Because the de-icing device 400 achieves its de-icing effect by spraying hot water onto the road surface, the spray radius should not be less than the spacing between the de-icing devices 400. For example, on a two-lane road (6m wide), the spacing between the de-icing devices 400 on both sides is 3m, and the spray radius is 3m. The specific spacing depends on the actual road width; preferably, C = 1 / 2L, R= 1 / 2L.

[0048] In the embodiments of this application, such as Figure 2 As shown, the road de-icing system also includes a hot water tank 500 and a main valve 600. The various de-icing devices 400 are connected in parallel, and each device 400 also includes an activation valve connected to a spray head. The hot water tank 500 is connected to multiple activation valves via the main valve 600. When the temperature value of a certain temperature measurement segment acquired by the DTS host 200 reaches the freezing temperature threshold, it sends alarm location information to the control terminal 300. The control terminal 300 then controls the main valve 600 and the corresponding activation valves to open. Thus, the de-icing device 400 at the freezing location begins operation, and the spray head continuously sprays hot water onto the road surface to remove ice.

[0049] In the embodiments of this application, the control terminal 300 includes a display screen, which displays the status of all ice-melting devices 400 for real-time observation by personnel. Additionally, if an ice-melting device 400 experiences a wiring fault or damage, it can be repaired promptly. Specifically, when the temperature value of the current temperature measurement segment acquired by the DTS host 200 has reached the freezing temperature threshold, but the ice-melting device 400 corresponding to the current temperature measurement segment is not activated, the display screen indicates that the ice-melting device 400 is in a state awaiting maintenance.

[0050] As described above, the various ice-melting devices 400 of this application are connected in parallel and controlled by motors. Each working unit does not affect the others, and the operating information of each ice-melting device 400 can be obtained in a timely manner, which facilitates timely maintenance.

[0051] In the embodiments of this application, the road de-icing system of this application can also spray hot water of different temperatures according to different road surface temperatures.

[0052] Specifically, the road icing warning signal level issued by the traffic management department and the Mohs hardness of the ice are used as references, and the specific value ranges are as follows:

[0053] Warning Level <![CDATA[Road surface icing temperature T r / ℃]]> <![CDATA[Hot water temperature range T w / ℃]]> Level 1 warning <![CDATA[-15<T r ≤0]]> <![CDATA[20≤T w ≤30]]> Level II Warning <![CDATA[-40<T r ≤-15]]> <![CDATA[45≤T w ≤55]]> Level III Warning <![CDATA[-50<T r ≤-40]]> <![CDATA[55≤T w ≤65]]>

[0054] According to the value range in the table above, the hot water tank 500 of this application can be set up in three places, namely a first hot water tank, a second hot water tank and a third hot water tank; all three hot water tanks are connected to multiple start valves through a main valve 600.

[0055] The hot water temperature in the first hot water tank is between 20℃ and 30℃, the hot water temperature in the second hot water tank is between 45℃ and 55℃, and the hot water temperature in the third hot water tank is between 55℃ and 65℃. A temperature value less than or equal to 0℃ and greater than -15℃ is defined as the first-level warning threshold, a temperature value less than or equal to -15℃ and greater than -40℃ as the second-level warning threshold, and a temperature value less than or equal to -40℃ and greater than -50℃ as the third-level warning threshold.

[0056] As an optimization, the range of the melting water temperature value is set based on the local historical winter temperature. If it is not within the above range, the lowest possible temperature in the local area can be used as a further warning. In principle, the range should be higher than the local lowest temperature.

[0057] When the temperature value of the temperature measurement segment acquired by the DTS host 200 is within the first-level warning threshold, the DTS host 200 sends alarm location information and temperature value information to the control terminal 300. Based on the alarm location information and temperature value information, the control terminal 300 controls the first hot water tank to connect with the main valve 600, and controls the main valve 600 and the start valve of the corresponding ice-melting device 400 to open. Similarly, when the temperature value of the temperature measurement segment acquired by the DTS host 200 is within the second-level warning threshold, the DTS host 200 sends alarm location information and temperature value information to the control terminal 300, and the control terminal 300 controls the second hot water tank to connect with the main valve 600, and controls the main valve 600 and the start valve of all ice-melting devices 400 to open. When the temperature value of the temperature measurement segment obtained by the DTS host 200 is within the level 3 warning threshold, the DTS host 200 sends alarm location information and temperature value information to the control terminal 300. The control terminal 300 controls the third hot water tank to connect with the main valve 600, and controls the main valve 600 and the start valves of all ice melting devices 400 to open.

[0058] In the embodiments of this application, the DTS host 200 includes a processing module. The processing module is set with an icing temperature threshold. The processing module can compare the temperature values ​​detected by multiple temperature measurement segments acquired by the DTS host 200 with the icing temperature threshold. When the temperature value of one or more temperature measurement segments reaches the icing temperature threshold, the processing module sends alarm location information and temperature value information to the control terminal 300.

[0059] As an example, the processing module can be the CSM software installed on the DTS host 200. The CSM software has an icing temperature threshold, which can be set according to the temperature threshold when the road surface ices. When the temperature value detected by a certain temperature measurement segment reaches the icing temperature threshold (indicating that the surface temperature of a certain road segment is lower than the icing temperature threshold of 0℃), the CSM software installed on the DTS host 200 will automatically trigger the alarm information and output the alarm location information and temperature value information to the control terminal 300.

[0060] It should be noted that the CSM software itself is existing technology. CSM software is a system monitoring software suitable for temperature monitoring systems. It connects to the DTS host for data acquisition, recording and analyzing temperature data, and monitoring all necessary parameters. In this application, the CSM software primarily performs temperature data analysis and sets icing temperature thresholds to achieve an alarm function.

[0061] The road de-icing system of this application operates according to the following process:

[0062] Phase 1: When the temperature value detected by a certain temperature measurement segment reaches the freezing temperature threshold (indicating that the surface temperature of a certain road section is lower than the freezing temperature threshold of 0℃), the CSM software installed on the DTS host 200 will automatically trigger the alarm information and output the alarm location information and temperature value information to the control terminal 300.

[0063] Phase 2, the control terminal 300 operates; the control terminal 300 identifies the alarm location information and temperature value information, and opens the start valve of the preset hot water pipe and the ice melting device 400 at the alarm point.

[0064] Phase 3, ice removal: The ice-melting device 400 at the ice location starts operating, continuously spraying hot water onto the road surface to remove the ice.

[0065] Phase 4, De-icing Feedback: When the temperature of all temperature measurement sections is above 0℃, de-icing is complete, the de-icing device 400 and control terminal 300 are shut down, and the road de-icing system is online. If the road surface temperature is detected to be below the freezing point, the system will restart, repeating Phase 1 → Phase 2 → Phase 3 → Phase 4.

[0066] The specific implementation steps of the road de-icing system in this application are as follows:

[0067] Step 1, Preparations: Pre-fabrication and installation of the ice-melting device 400.

[0068] Step 2, temperature measuring fiber optic cable 100 is laid; a cable tray is installed on the side edge of the road base layer, and the temperature measuring fiber optic cable 100 is laid in the cable tray.

[0069] Step 3: The DTS host 200, main valve 600, and start valve, which can be set to freeze temperature threshold, are connected to the control terminal 300. When the DTS host 200 detects an abnormal temperature, it outputs alarm location information and temperature value information to the control terminal 300. After receiving the information, the control terminal 300 introduces hot water of the corresponding temperature and opens the start valve of the ice melting device 400 at the freezing position.

[0070] Step 4, monitoring operation; DTS host 200 monitors road surface temperature in real time through temperature measuring fiber optic cable 100 and sets icing temperature threshold.

[0071] Step 5, early warning processing; when the DTS host 200 detects that the road surface temperature is lower than or equal to the freezing temperature threshold, the de-icing device 400 at the freezing location starts to operate, continuously spraying hot water onto the road surface to remove ice.

[0072] Step 6, System Dynamic Operation: After de-icing, when the DTS host 200 detects that the road surface temperature is higher than the icing temperature threshold, the main valve 600 and the start valve are closed, and the system is in a dormant state. The temperature measuring fiber optic cable 100 continuously monitors the system. If the detected temperature is less than or equal to the icing temperature threshold, the above steps are repeated until de-icing is completed.

[0073] Step 7: Regular system maintenance; The operating status of each working face can be viewed through the DTS system interface and the display of the control terminal 300. If a fault occurs, maintenance can be carried out in a timely manner.

[0074] During normal operation, the road de-icing system is in standby mode. The temperature-measuring fiber optic cable monitors the road surface temperature in real time. If the road surface temperature falls below the set temperature control limit (icing temperature threshold), the system starts operating. The system operation process is repeated cyclically, as described in steps 4 to 8 above, until the road de-icing is complete. In winter, low temperatures and wind cause road icing, jeopardizing driving safety. This invention effectively solves this problem. This system requires no manual operation and can operate for extended periods.

[0075] Preferably, the temperature-measuring fiber optic cable continuously monitors the road surface, especially during the morning and evening hours.

[0076] As an optimization, the road surface de-icing system is suitable for low-temperature conditions in winter and can effectively de-ice the road surface. It can be applied to roads in different environments such as tunnels and viaducts.

[0077] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A road surface de-icing system, characterized in that, The road surface de-icing system includes a temperature-measuring optical fiber, a DTS host, a control terminal, and multiple de-icing devices. The temperature-measuring optical fiber is laid on the road base layer and located on both sides of the road base layer to detect the road surface temperature in real time along the path. Multiple ice-melting devices are installed on both sides of the road surface, and each ice-melting device includes a spray head; the temperature measuring optical fiber is divided into multiple temperature measuring segments, and each of the multiple temperature measuring segments corresponds one-to-one with the multiple ice-melting devices; The signal input terminal of the DTS host is connected to the temperature measuring optical fiber, and the signal output terminal of the DTS host is connected to the control terminal. The DTS host can acquire the temperature values ​​detected by multiple temperature measuring segments in real time. When the temperature value of one or more temperature measuring segments acquired by the DTS host reaches the freezing temperature threshold, the DTS host sends alarm location information to the control terminal. The control terminal controls the de-icing device corresponding to the temperature measuring segment that has reached the freezing temperature threshold to be turned on, so as to spray hot water onto the road surface through the spray head. The road surface de-icing system also includes a cable tray; The cable trays are provided on both sides of the road base layer, and the temperature measuring optical fiber is laid on the cable trays; The temperature-measuring optical fiber is 30cm away from the surface of the road surface; Multiple ice-melting devices are spaced apart on both sides of the road surface; The ice-melting device satisfies: C = ½L, R ≥ C; Where C is the distance between two adjacent ice-melting devices, L is the width of the road surface, and R is the spray radius of the spray head; The road de-icing system also includes a hot water tank and a main valve, and the de-icing device also includes a start valve connected to the spray head; The hot water tank is connected to multiple starting valves via the main valve. When the temperature value of one or more of the temperature measurement segments obtained by the DTS host reaches the freezing temperature threshold, the control terminal controls the main valve and the starting valve of the corresponding ice melting device to open, so as to spray hot water onto the road surface through the spray head. There are three hot water tanks, namely a first hot water tank, a second hot water tank, and a third hot water tank; all three hot water tanks are connected to multiple start valves through the main valve; The temperature of the hot water in the first hot water tank is between 20°C and 30°C, the temperature of the hot water in the second hot water tank is between 45°C and 55°C, and the temperature of the hot water in the third hot water tank is between 55°C and 65°C. The threshold for a Level 1 warning is defined as a temperature value less than or equal to 0℃ and greater than -15℃; the threshold for a Level 2 warning is defined as a temperature value less than or equal to -15℃ and greater than -40℃; and the threshold for a Level 3 warning is defined as a temperature value less than or equal to -40℃ and greater than -50℃. When the temperature value of the temperature measurement segment obtained by the DTS host is within the first-level warning threshold, the control terminal controls the first hot water tank to connect with the main valve, and controls the main valve and the start valve of the corresponding ice melting device to open. When the temperature value of the temperature measurement segment obtained by the DTS host is within the secondary warning threshold, the control terminal controls the second hot water tank to connect with the main valve, and controls the main valve and the start valve of all the ice melting devices to open. When the temperature value of the temperature measurement segment obtained by the DTS host is within the level three warning threshold, the control terminal controls the third hot water tank to connect with the main valve, and controls the main valve and the start valve of all the ice melting devices to open.

2. The road de-icing system according to claim 1, characterized in that, The control terminal includes a display; the display is used to show the status of all the ice-melting devices.

3. The road de-icing system according to claim 2, characterized in that, If the temperature value of the current temperature measurement segment obtained by the DTS host has reached the freezing temperature threshold, but the ice-melting device corresponding to the current temperature measurement segment is not turned on, the display shows that the ice-melting device is currently in a state of needing maintenance.

4. The road de-icing system according to any one of claims 1-3, characterized in that, The DTS host includes a processing module; The processing module is set with the freezing temperature threshold. The processing module can compare the temperature values ​​detected by multiple temperature measurement segments obtained by the DTS host with the freezing temperature threshold. When the temperature value of one or more temperature measurement segments reaches the freezing temperature threshold, the processing module sends alarm location information to the control terminal.

5. The road de-icing system according to any one of claims 1-3, characterized in that, The road surface de-icing system is applied to the road surface of tunnels or viaducts.

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