A frozen earth area highway cooling system and cooling method based on road surface temperature monitoring

Abstract

The present application relates to the field of frozen soil engineering, and particularly relates to a frozen soil area highway cooling system and cooling method based on road surface temperature monitoring, which comprises a temperature monitoring unit, the temperature monitoring unit comprises a temperature sensor and a temperature difference regulation unit, one end of the temperature sensor is connected with a to-be-monitored highway section, the other end of the temperature sensor is connected with the temperature difference regulation unit, and the output end of the temperature difference regulation unit is connected with a plurality of cooling units; the temperature sensor is arranged to monitor the temperature change of the road surface and the surrounding environment in real time; the system can quickly capture the case of abnormal increase of the road surface temperature, and realize dynamic adjustment of the cooling unit through the temperature difference regulation unit, so that the cooling process is highly matched with the actual temperature change, and further aggravation of frozen soil degradation is avoided.

Description

Technical Field

[0001] This invention relates to the field of frozen soil engineering technology, and in particular to a road cooling system and method for frozen soil highways based on road surface temperature monitoring. Background Technology

[0002] In permafrost regions, the stability of the permafrost layer plays a decisive role in the engineering performance of highway subgrades due to its unique thermal and mechanical properties. However, permafrost is extremely sensitive to changes in external temperature. When the ambient temperature rises, the large number of ice crystals contained in the permafrost begin to melt, causing changes in the structure of the permafrost layer, a downward shift in its upper limit, and a sharp decrease in bearing capacity. This leads to a series of engineering problems such as subgrade settlement, cracking, and overall instability. In recent years, with economic development and increasing transportation demand, highway construction in permafrost regions has gradually developed towards high standardization and heavy-duty construction. Asphalt pavement has become the preferred pavement material due to its durability and high load-bearing capacity. However, the application of asphalt pavement in permafrost regions has also brought about significant thermal thaw settlement problems, posing a serious challenge to the safety and durability of highways.

[0003] Asphalt pavement materials have high heat absorption properties; their surface heats up rapidly under sunlight, transferring a large amount of heat to the underlying subgrade, causing the permafrost layer to heat up and thaw. Simultaneously, the low permeability of asphalt pavement hinders the evaporation and heat dissipation of surface moisture, reducing the overall cooling efficiency of the subgrade. Under these circumstances, especially in hot summers, the thawing process of permafrost accelerates significantly, leading to heat accumulation within the subgrade, inducing thaw settlement, and ultimately causing irreversible damage to the highway's structure and function. Furthermore, because permafrost contains a large amount of ice crystals, the uneven settlement resulting from thawing further exacerbates pavement deformation and cracking, significantly increasing highway maintenance and repair costs. Summary of the Invention

[0004] The purpose of this invention is to address the problem that existing highways in permafrost regions are all asphalt pavements. Due to the thermal properties of asphalt materials, the temperature of the permafrost beneath the highway rises, leading to highway subsidence or cracking. This invention provides a highway cooling system for permafrost regions based on pavement temperature monitoring, and also provides a cooling method for this system.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A road cooling system for frozen soil regions based on road surface temperature monitoring includes a temperature monitoring unit, which includes a temperature sensor and a temperature difference control unit. One end of the temperature sensor is connected to the road section to be monitored, and the other end is connected to the temperature difference control unit. The output end of the temperature difference control unit is connected to several cooling units.

[0007] This invention relates to a road cooling system for permafrost regions based on pavement temperature monitoring. The system includes a temperature sensor, one end of which is connected to the road section to be monitored. The temperature of the monitored road section is acquired through the temperature sensor. The system also includes a temperature difference control unit. Connected to the temperature sensor, the temperature difference control unit receives temperature data from the monitored road surface. Several cooling units are connected to the output of the temperature difference control unit, allowing it to control the cooling units based on the road surface temperature data, thereby cooling the monitored road section. By installing cooling units on the monitored road section and using these units to cool it, this system reduces heat transfer to the permafrost, improves the stability of the roadbed, effectively reduces cracking, settlement, and instability caused by thermal thawing in permafrost regions, lowers maintenance frequency and costs, and ultimately extends the service life of the road.

[0008] As a preferred embodiment of the present invention, the system further includes an energy supply unit, which includes an energy storage device. One end of the energy storage device is connected to the temperature difference control unit, and the other end is connected to a power generation device.

[0009] The energy storage device is used to store the energy generated by the power generation device.

[0010] By combining power generation and energy storage devices, excess energy can be stored during periods of low energy demand and released during periods of high energy demand, thus balancing the system's energy supply, avoiding energy waste, and improving overall operating efficiency.

[0011] As a preferred embodiment of the present invention, the cooling unit includes an air curtain machine, the air curtain machine is provided with an air outlet, the air outlet is arranged facing the highway section to be monitored, and the direction of air outlet is horizontal with the highway section to be monitored.

[0012] By installing an air curtain, the refrigerant in this cooling system can be produced through the air curtain. The air curtain is equipped with an air outlet for discharging the refrigerant, and the air outlet's direction is parallel to the road surface. This air outlet direction ensures that the high-speed airflow flows close to the road surface, forming a uniform and continuous air barrier above the road surface. This effectively isolates external heat from being transferred to the road surface and prevents direct contact between hot air and the road surface, thereby significantly reducing the road surface temperature. The high-speed airflow parallel to the road surface improves the convective heat transfer efficiency between the ground surface and the air, quickly carrying away the heat accumulated on the road surface and reducing the accumulation of heat on the road surface and roadbed, further reducing the road surface temperature. This application not only blocks external heat conduction through the air barrier but also reduces the direct effect of solar radiation on the road surface by disturbing the airflow near the road surface, reducing the heat absorption of the asphalt road surface and effectively weakening the heat accumulation effect of the asphalt road surface.

[0013] As a preferred embodiment of the present invention, the air curtain machine is 0.2m above the ground.

[0014] As a preferred embodiment of the present invention, the cooling unit further includes a shock-absorbing bracket, which is connected to the air curtain machine.

[0015] Since highway sections are mostly areas with high traffic volume, when vehicles drive across the highway, the road surface will vibrate due to the weight and speed of the vehicles, causing a certain degree of disturbance to the air curtain machine, which in turn affects its normal operation and cooling effect. By placing the air curtain machine on the shock-absorbing bracket, the shock-absorbing bracket can effectively absorb and mitigate the vibration transmitted to the air curtain machine when vehicles pass by, preventing the equipment from shifting, loosening or degrading due to vibration, and ensuring the normal operation of the cooling system.

[0016] As a preferred embodiment of the present invention, the shock-absorbing bracket is located on the shoulder of the road section to be monitored.

[0017] As a preferred embodiment of the present invention, two adjacent cooling units located on the same side of the highway section to be monitored are spaced 8m-10m apart.

[0018] As a preferred embodiment of the present invention, the temperature difference control unit is provided with a communication module, which is used to transmit the road surface temperature data measured by the temperature sensor to the temperature difference control unit.

[0019] As a preferred embodiment of the present invention, the temperature difference control unit further includes a storage module and a processor module. The storage module is used to store the road surface temperature data transmitted by the communication module; the processor module is used to receive the road surface temperature data, compare the road surface temperature data with the external ambient temperature data, and control the cooling unit.

[0020] As a preferred embodiment of the present invention, the energy storage device includes a battery and an inverter, one end of the battery is connected to the inverter and the other end is connected to the power generation device; one end of the inverter is connected to the temperature difference control unit and the other end is connected to the inverter.

[0021] By incorporating a battery, a backup power source is provided for the system. This ensures stable operation of the cooling system when external power supply is insufficient or fluctuates, preventing unstable or interrupted cooling effects due to power issues and improving system reliability and continuity. The inverter converts the DC power stored in the battery into the required AC power, providing continuous power support to the temperature difference control unit and the cooling unit. The inverter's efficient energy conversion improves the overall energy utilization efficiency of the system and avoids energy loss. Through the combination of the battery and inverter, the temperature difference control unit can adjust the operating status of the cooling unit based on real-time temperature data. The inverter provides precise power supply to the temperature difference control unit, ensuring the system can automatically adjust according to changes in road surface temperature, enhancing the system's intelligence and adaptability.

[0022] As a preferred embodiment of the present invention, the power generation device body is a wind turbine and / or a solar photovoltaic panel.

[0023] Both wind turbines and solar photovoltaic panels are green and environmentally friendly energy supply devices. By setting the power generation device as a wind turbine and / or solar photovoltaic panel, the environmental friendliness of this system is improved. At the same time, permafrost regions are mostly located in high latitude and high altitude areas. The ultraviolet radiation in high latitude areas increases with the increase of altitude in the atmosphere. By installing solar photovoltaic panels, natural resources can be better utilized, achieving energy conservation and environmental protection.

[0024] In a preferred embodiment of the present invention, the cooling units are symmetrically arranged along both shoulders of the road on the section of road to be monitored.

[0025] or;

[0026] The cooling units are arranged at intervals along one shoulder of the road on the section of road to be monitored.

[0027] or;

[0028] The cooling units are staggered along both shoulders of the road on the section to be monitored.

[0029] or;

[0030] The cooling units are symmetrically arranged along the median strip of the highway section to be monitored.

[0031] By providing various options such as symmetrical arrangement along both sides of the road, spaced arrangement along one side of the road, staggered arrangement along both sides of the road, and symmetrical arrangement in the median strip, this system allows the selection of the optimal arrangement method based on the actual conditions of the road, ensuring the cooling effect while improving design flexibility.

[0032] As a preferred embodiment of the present invention, the symmetrical arrangement along the shoulders on both sides of the road is applied to expressways, first-class highways and second-class highways, as well as highways with a width of more than 9m.

[0033] As a preferred embodiment of the present invention, the arrangement of the shoulder on one side of the road is applied to Class II, Class III and Class IV highways, as well as highways with a width of 9m or more.

[0034] As a preferred embodiment of the present invention, the staggered arrangement of the shoulders on both sides of the highway is applied to secondary highways and highways with a width of more than 9m.

[0035] As a preferred embodiment of the present invention, the symmetrical arrangement along the median strip of the highway is applied to expressways and Class I highways, as well as highways with a width of 16m or more.

[0036] In a second aspect, a cooling method for a road cooling system in permafrost regions based on pavement temperature monitoring is provided. The method employs the aforementioned road cooling system for permafrost regions based on pavement temperature monitoring, and includes:

[0037] Obtain the ambient temperature of the highway section to be monitored;

[0038] Temperature sensors collect real-time data on the road surface temperature of the highway section to be monitored.

[0039] When the road surface temperature of the monitored highway section is higher than the ambient temperature, the temperature difference control unit controls the cooling unit to release air, forming an airflow barrier above the monitored highway section to reduce heat exchange and complete the cooling.

[0040] When the road surface temperature of the monitored highway section is less than or equal to the ambient temperature, the temperature difference control unit controls the cooling unit to stop working. At this time, the power generation device charges the energy storage device.

[0041] This invention discloses a cooling method for a road surface temperature monitoring system in permafrost regions. It involves real-time monitoring of the road surface temperature and ambient temperature of the monitored road section, and processing the temperature data using a temperature difference control unit. When the road surface temperature of the monitored road section is higher than the ambient temperature, the system automatically activates the cooling device to cool the road surface, effectively reducing the road surface temperature and preventing permafrost thawing and roadbed instability. This method allows for precise temperature control, avoids energy waste, slows down the degradation of roadbeds in permafrost regions, and extends the service life of the road, exhibiting strong adaptability and environmental friendliness.

[0042] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0043] 1. This invention is a road cooling system for permafrost regions based on pavement temperature monitoring. The system includes a temperature sensor, one end of which is connected to the road section to be monitored. The temperature of the monitored road section is obtained through the temperature sensor. The system also includes a temperature difference control unit. Through its connection with the temperature sensor, the temperature difference control unit receives the temperature data of the monitored road surface collected by the temperature sensor. Several cooling units are connected to the output of the temperature difference control unit, allowing it to control the cooling units based on the temperature data of the monitored road surface, thereby cooling the monitored road section. By installing cooling units on the monitored road section and using these units to cool the section, this system reduces heat transfer to the permafrost, improves the stability of the roadbed, effectively reduces cracking, settlement, and instability caused by thermal thawing and subsidence in permafrost regions, lowers the frequency of road maintenance and repair costs, and thus extends the service life of the road.

[0044] 2. This invention is a road cooling system for permafrost regions based on road surface temperature monitoring. The system is equipped with a power generation device to provide power to the temperature monitoring unit and the cooling unit. The power generation device in this system is a wind turbine and / or a solar photovoltaic panel. Both wind turbines and solar photovoltaic panels are green and environmentally friendly energy supply devices. By using wind turbines and / or solar photovoltaic panels as the power generation device, the environmental friendliness of this system is improved. At the same time, permafrost regions are mostly located in high latitude and high altitude areas. In high latitude areas, ultraviolet radiation increases with altitude. By installing solar photovoltaic panels on the roadside, natural energy in the road area can be better utilized, achieving energy conservation and environmental protection.

[0045] 3. This invention is a road cooling system for frozen soil areas based on road surface temperature monitoring. It achieves modular connection between temperature monitoring unit, cooling unit and power supply unit, enabling rapid installation on construction site. Furthermore, this system adopts a trenchless, rapid and non-destructive installation method, which does not affect normal traffic and can shorten the construction cycle.

[0046] 4. This invention relates to a cooling method for a road surface temperature monitoring system for highways in permafrost regions. It involves real-time monitoring of the road surface temperature and ambient temperature of the monitored road section, and processing the temperature data using a temperature difference control unit. When the road surface temperature of the monitored road section is higher than the ambient temperature, the system automatically activates the cooling device to cool the road surface, effectively reducing the road surface temperature and preventing permafrost thawing and roadbed instability. This method allows for precise temperature control, avoids energy waste, slows down the degradation of roadbeds in permafrost regions, and extends the service life of highways, exhibiting strong adaptability and environmental friendliness.

[0047] 5. This invention is a cooling method for a road cooling system in permafrost areas based on road surface temperature monitoring. In this method, when the temperature of the road section to be monitored is lower than the ambient temperature, the cooling unit does not work. The temperature difference control unit disconnects from the cooling unit and connects to the power supply unit. The power generation device in the power supply unit charges the battery to ensure that the system has sufficient energy reserves to meet subsequent operating needs and ensures the stability of the system operation. Attached Figure Description

[0048] Figure 1 This is a connection diagram of the cooling system (including a wind turbine and a solar photovoltaic panel) of the present invention;

[0049] Figure 2 This is a connection diagram of the cooling system (including a wind turbine) of the present invention;

[0050] Figure 3 This is a connection diagram of the cooling system (including solar photovoltaic panels) of the present invention;

[0051] Figure 4 This is a schematic diagram of the cooling unit of the present invention;

[0052] Figure 5 This is a schematic diagram of the temperature monitoring unit of the present invention;

[0053] Figure 6 This is a schematic diagram of the cooling units of the present invention arranged at intervals along one side of the road shoulder;

[0054] Figure 7 This is a schematic diagram of the cooling unit of the present invention being arranged in a staggered manner along both sides of the road shoulder;

[0055] Figure 8 This is a schematic diagram of the cooling unit of the present invention symmetrically arranged along both shoulders of the highway;

[0056] Figure 9 This is a schematic diagram showing the cooling units of the present invention arranged symmetrically along the median strip of a highway;

[0057] Figure 10 This is a flowchart of the cooling method of the present invention.

[0058] Figure Labels

[0059] Icons: 1-Cooling unit; 11-Air curtain machine; 111-Air outlet; 12-Shock-absorbing bracket; 2-Temperature monitoring unit; 21-Temperature sensor; 22-Temperature difference control unit; 221-Communication module; 222-Storage module; 223-Processor module; 3-Power supply unit; 31-Energy storage device; 311-Battery; 312-Inverter; 32-Power generation device. Detailed Implementation

[0060] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0061] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this invention is based on the orientation or positional relationship of the product / equipment / device during its usual use. These terms are merely for the purpose of facilitating the description of the invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution. They do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship, and therefore should not be construed as limiting the invention.

[0062] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0063] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0064] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0065] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0066] Example 1

[0067] A road cooling system for frozen soil areas based on road surface temperature monitoring includes a temperature monitoring unit 2, which is equipped with a temperature sensor 21 that is attached to the road section to be monitored. The temperature sensor 21 can record the temperature of the road section to be monitored in real time at various time periods. The temperature monitoring unit 2 also includes a temperature difference control unit 22, which is used to record the road surface temperature of the road section to be monitored monitored by the temperature sensor 21 and compare the monitored road surface temperature with the ambient temperature.

[0068] Temperature difference control unit 22 connects to and controls several cooling units 1, which are installed on the shoulder of the road section to be monitored and are used to generate refrigerant and form an air barrier above the road section to be monitored.

[0069] The cooling unit 1 includes an air curtain machine 11 that generates refrigerant. A shock-absorbing bracket 12 is installed below the air curtain machine 11. The reason for the installation of the shock-absorbing bracket 12 is that highways are mostly areas with high traffic volume. When vehicles drive over the highway, the road surface will vibrate due to the weight and speed of the vehicles, causing the air curtain machine 11 to be disturbed to a certain extent, which will affect its normal operation and cooling effect. By placing the air curtain machine 11 on the shock-absorbing bracket 12, the shock-absorbing bracket 12 can effectively absorb and mitigate the vibration transmitted to the air curtain machine 11 when vehicles pass by, so as to prevent the equipment from shifting, loosening or degrading due to vibration, and ensure the normal operation of the cooling system.

[0070] Furthermore, the air curtain machine 11 is equipped with an air outlet 111, and the air outlet direction is parallel to the road surface. The air outlet 111 is set so that the high-speed airflow flows close to the road surface and parallel to it. The airflow forms a uniform and continuous air barrier above the road surface, effectively isolating the external heat from being transferred to the road surface and preventing the direct contact between the high-temperature air and the road surface, thereby significantly reducing the road surface temperature. The high-speed airflow parallel to the road surface improves the convective heat transfer efficiency between the ground surface and the air, quickly carrying away the heat accumulated on the road surface, reducing the accumulation of heat on the road surface and the roadbed, and further reducing the road surface temperature. At the same time, this application not only blocks the conduction of external heat through the air barrier, but also reduces the direct effect of solar radiation on the road surface by disturbing the airflow near the road surface, reducing the heat absorption of the asphalt road surface, and effectively weakening the heat accumulation effect of the asphalt road surface.

[0071] In one or more embodiments, the temperature sensor 21 includes a patch temperature sensor, an infrared temperature sensor, and an ultra-narrow field-of-view infrared radiometer sensor to avoid damaging the road surface.

[0072] In one or more embodiments, the air curtain machine 11 is a cross-flow air curtain machine.

[0073] In one or more embodiments, the cross-flow air curtain machine is either centrifugal or axial.

[0074] In one or more embodiments, the starting temperature difference of the temperature difference control unit 22 is not less than 5°C.

[0075] In one or more embodiments, the cooling system further includes an energy supply unit 3 that provides power to the entire system. The energy supply unit 3 includes a power generation device 32 that generates energy. The power generation device 32 is connected to an energy storage device 31. The energy storage device 31 receives and stores the energy provided by the power generation device 32 and converts and transfers the energy to the temperature monitoring unit 2 and the cooling unit 1.

[0076] Furthermore, the energy storage device 31 includes a battery 311. By setting up the battery 311, a backup power supply can be provided for the system. When the external power supply is insufficient or fluctuates, the cooling system can be ensured to operate stably, avoiding unstable or interrupted cooling effect due to power problems, and improving the reliability and continuity of the system. The energy storage device 31 also includes an inverter 312. One end of the inverter 312 is connected to the battery 311, and the other end is connected to the temperature monitoring unit 2 and the cooling unit 1. The inverter 312 is responsible for converting the DC power stored in the battery 311 into the required AC power to provide continuous power support for the temperature difference control unit 22 and the cooling unit 1.

[0077] Furthermore, the power generation device 32 is a wind turbine and / or a solar photovoltaic panel. As green and environmentally friendly energy supply devices, wind turbines and solar photovoltaic panels can effectively utilize natural resources to provide renewable energy for this system. The wind turbine converts wind energy into electricity, while the solar photovoltaic panel converts solar radiation into electricity. By setting the power generation device 32 as a wind turbine and / or solar photovoltaic panel, this system can not only reduce dependence on traditional fossil fuels and lower carbon emissions, but also improve the sustainability and environmental friendliness of energy use. Moreover, permafrost regions are typically located at high latitudes and high altitudes, with harsh climates and abundant sunshine. Especially in high-latitude regions, ultraviolet radiation intensity increases with altitude. High-latitude regions have longer summer days and stronger solar radiation, giving solar photovoltaic panels high power generation potential in these areas. By installing solar photovoltaic panels in these areas, abundant local solar energy resources can be fully utilized, improving energy self-sufficiency, reducing external dependence on energy supply, and lowering environmental burden. High-altitude areas also possess abundant wind energy resources, especially in mountainous or open areas where wind speeds are high, allowing wind turbines to more efficiently convert wind energy into electricity. Combining wind power generation with solar photovoltaic panels not only ensures a continuous energy supply but also supplements energy demand during periods of insufficient sunlight, achieving a stable, all-weather green energy supply.

[0078] In one or more embodiments, the size of the solar photovoltaic panel should not be less than 540mm × 670mm, and the output power should not be less than 150W;

[0079] Furthermore, the solar photovoltaic panels are installed on the sunny side of the roadbed slope and at the toe of the slope, using the construction and installation method of the sunshade roadbed. The distance between the solar photovoltaic panels and the slope is 40cm, thereby further reducing the heat flux of solar radiation into the soil layer and reducing the impact of solar heat radiation on the permafrost under the roadbed.

[0080] In one or more embodiments, the temperature difference control unit 22 is provided with a communication module 221, which is used to transmit the road surface temperature data measured by the temperature sensor 21 to the temperature difference control unit 22.

[0081] Furthermore, the temperature difference control unit 22 also includes a storage module 222 and a processor module 223. The storage module 222 is used to store the road surface temperature data transmitted by the communication module 221; the processor module 223 is used to receive the road surface temperature data, compare the road surface temperature data with the external ambient temperature data, and control the cooling unit 1.

[0082] Example 2

[0083] This embodiment is the arrangement of the cooling unit 1 on the highway in Embodiment 1.

[0084] The cooling unit 1 can be arranged in the following ways on the highway: symmetrically arranged along both shoulders of the highway, spaced along one shoulder of the highway, staggered along both shoulders of the highway, and symmetrically arranged along the median strip of the highway.

[0085] Furthermore, the symmetrical arrangement of shoulders on both sides of the highway is applied to expressways, Class I highways, and Class II highways, as well as highways with a width of 9m or more; the staggered arrangement of shoulders on one side of the highway is applied to Class II highways, Class III highways, and Class IV highways, as well as highways with a width of 9m or more; the staggered arrangement of shoulders on both sides of the highway is applied to Class II highways, as well as highways with a width of 9m or more; and the symmetrical arrangement of the median strip of the highway is applied to expressways and Class I highways, as well as highways with a width of 16m or more.

[0086] Example 3

[0087] This embodiment describes the cooling method of the cooling system in Embodiment 1.

[0088] A cooling method for a road cooling system in permafrost regions based on pavement temperature monitoring includes:

[0089] Obtain ambient temperature data for the highway section to be monitored;

[0090] Temperature data of the highway section to be monitored can be obtained in real time by installing temperature sensor 21 on the highway section to be monitored.

[0091] The temperature difference control unit 22 is responsible for processing and analyzing the temperature data of the highway section to be monitored collected by the temperature sensor 21;

[0092] The temperature difference control unit 22 compares the road surface temperature data and the ambient temperature data of the highway section to be monitored to obtain comparison information;

[0093] Based on the comparison information, when the road surface temperature of the monitored highway section is higher than the ambient temperature, the temperature difference control unit 22 will automatically activate the cooling unit 1. When the cooling unit 1 is activated, the air outlet begins to release cold air or airflow to form a cooling area. The airflow generated by the air outlet 111 of the cooling unit 1 forms an airflow barrier above the road surface of the monitored highway section, slowing down the heat conduction from the outside to the road surface.

[0094] Based on the comparison information, when the road surface temperature of the monitored highway section is lower than the ambient temperature, the temperature difference control unit 22 shuts down the cooling unit 1. At this time, the power generation device 32 starts and charges the energy storage device 31.

[0095] Furthermore, the power generation device 32 is communicatively connected to the temperature difference control unit 22;

[0096] Optionally, the power generation device 32 and the temperature difference control unit 22 can interact via a communication module 221. When the road surface temperature of the monitored highway section is lower than the ambient temperature, the temperature difference control unit 22 generates a control signal and sends the signal to the power generation device 32 via the communication module 221, instructing it to start working. After receiving the signal, the power generation device 32 starts working and charges the energy storage device 31 for subsequent use.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A frozen earth area highway cooling system based on road surface temperature monitoring, characterized in that, The temperature monitoring unit (2) includes a temperature sensor (21) and a temperature difference regulation unit (22), one end of the temperature sensor (21) is connected with a to-be-monitored highway section, the other end is connected with the temperature difference regulation unit (22), the output end of the temperature difference regulation unit (22) is connected with a plurality of cooling units (1), the cooling unit (1) includes an air curtain machine (11), the air curtain machine (11) is provided with an air outlet (111), the air outlet (111) is arranged towards the to-be-monitored highway section, and the direction of the air outlet is parallel to the to-be-monitored highway section, the cooling unit (1) further includes a damping support (12), the damping support (12) is connected with the air curtain machine (11), the system further includes an energy supply unit (3), the energy supply unit (3) includes an energy storage device (31), one end of the energy storage device (31) is connected with the temperature difference regulation unit (22), the other end is connected with a power generation device (32); the energy storage device (31) is used for storing the energy generated by the power generation device (32), the energy storage device (31) includes a battery (311) and an inverter (312), one end of the battery (311) is connected with the inverter (312), the other end is connected with the power generation device (32); one end of the inverter (312) is connected with the temperature difference regulation unit (22), the other end is connected with the battery (311), the power generation device (32) is a wind turbine and / or a solar photovoltaic panel, the temperature sensor (21) includes a patch type temperature sensor, an infrared temperature sensor and an ultra-narrow field of view infrared radiometer sensor, and the air curtain machine (11) adopts a cross-flow air curtain machine.

2. The frozen ground area highway cooling system based on road surface temperature monitoring according to claim 1, characterized in that, The adjacent two cooling units (1) located on the same side of the to-be-monitored highway section are arranged at intervals of 8m-10m.

3. The frozen ground area highway cooling system based on road surface temperature monitoring according to claim 2, characterized in that, The temperature difference regulation unit (22) is provided with a communication module (221), which is used for transmitting the road surface temperature data of the to-be-monitored highway section measured by the temperature sensor (21) to the temperature difference regulation unit (22).

4. The frozen ground area highway cooling system based on road surface temperature monitoring according to claim 3, characterized in that, The temperature difference regulation unit (22) further includes a storage module (222) and a processor module (223), the storage module (222) is used for storing the road surface temperature data of the to-be-monitored highway section transmitted by the communication module (221); the processor module (223) is used for receiving the road surface temperature data of the to-be-monitored highway section, comparing with the external environment temperature data, comparing the road surface temperature data of the to-be-monitored highway section with the external environment temperature data, and controlling the cooling unit (1).

5. The frozen ground area highway cooling system based on road surface temperature monitoring according to claim 4, characterized in that, The cooling unit (1) is arranged symmetrically along the double-side road shoulders of the to-be-monitored highway section; Or; The cooling unit (1) is arranged at intervals along the single-side road shoulder of the to-be-monitored highway section, Or; The cooling unit (1) is arranged at intervals along the double-side road shoulders of the to-be-monitored highway section, Or; The cooling unit (1) is arranged symmetrically along the middle strip of the to-be-monitored highway section.

6. A cooling method of a frozen ground area road cooling system based on road surface temperature monitoring, characterized by, The method comprises: Acquire the outside environment temperature of the monitored highway section; The temperature sensor (21) collects the road surface temperature of the monitored highway section in real time; When the road surface temperature of the monitored highway section is higher than the outside environment temperature, the temperature difference control unit (22) controls the cooling unit (1) to blow out air, forms an air curtain above the monitored highway section, reduces heat exchange and completes cooling; When the road surface temperature of the monitored highway section is less than or equal to the outside environment temperature, the temperature difference control unit (22) controls the cooling unit (1) to stop working, at this time, the power generation device (32) charges the energy storage device (31).

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