Frozen soil region road cooling system and method based on road surface temperature monitoring

Abstract

The invention relates to the field of frozen soil engineering, in particular to a frozen soil region road cooling system and method based on pavement temperature monitoring, and the system comprises a temperature monitoring unit which comprises a temperature sensor and a temperature difference regulation and control unit. One end of the temperature sensor is connected with the road section to be monitored, the other end of the temperature sensor is connected with the temperature difference regulation and control unit, and the output end of the temperature difference regulation and control unit is connected with a plurality of cooling units. The system can quickly capture the condition of abnormal temperature rise of the road surface, realizes dynamic adjustment of the cooling unit through the temperature difference regulation and control unit, ensures that the cooling process is highly matched with the actual temperature change, and avoids further aggravation of frozen soil degradation.

Description

Technical Field

[0001] The invention relates to the technical field of frozen soil engineering, and in particular to a freezing zone highway cooling system and cooling method based on road surface temperature monitoring. Background Art

[0002] In permafrost areas, due to the special thermal and mechanical properties of the permafrost layer, its stability plays a decisive role in the engineering performance of highway subgrades. However, permafrost is extremely sensitive to changes in external temperature. When the ambient temperature rises, a large number of ice crystals contained in the permafrost begin to melt, causing the structure of the permafrost layer to change, the upper limit to move downward, and the bearing capacity to drop sharply, which in turn causes a series of engineering diseases such as subsidence, cracking, and overall instability of the subgrade. In recent years, with the growth of economic development and transportation demand, highway construction in permafrost areas has gradually developed in the direction of high standardization and heavy load. Asphalt pavement has become the preferred pavement material due to its durability and high bearing capacity. However, the application of asphalt pavement in permafrost areas also brings significant thermal thaw settlement problems, posing a severe challenge to the safety and durability of highways.

[0003] Asphalt pavement materials have high heat absorption. Their surface heats up quickly under sunlight, transferring a large amount of heat to the underlying roadbed, causing the temperature of the frozen soil layer to rise and melt. At the same time, the low water permeability of asphalt pavement hinders the evaporation and heat dissipation of surface water, reducing the overall cooling efficiency of the roadbed. In this case, especially in hot summer, the thermal melting process of permafrost will be significantly accelerated, resulting in heat accumulation inside the roadbed, inducing thawing and settling, and ultimately causing irreversible damage to the structure and function of the highway. In addition, since permafrost contains a large number of ice crystals, the uneven settlement caused by melting further aggravates the deformation and cracking of the road surface, which greatly increases the maintenance and repair costs of the highway. Summary of the invention

[0004] The purpose of the present invention is to provide a freezing zone highway cooling system based on pavement temperature monitoring, and also provide a cooling method for freezing zone highway cooling system based on pavement temperature monitoring, in view of the fact that the existing highway pavements in frozen soil areas are all asphalt pavements. Due to the thermal properties of the asphalt material itself, the temperature of the frozen soil under the highway increases, thereby causing the highway to sink or crack.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A highway cooling system in frozen soil areas based on road surface temperature monitoring comprises a temperature monitoring unit, wherein the temperature monitoring unit comprises a temperature sensor and a temperature difference control unit, wherein one end of the temperature sensor is connected to the highway section to be monitored and the other end is connected to the temperature difference control unit, and the output end of the temperature difference control unit is connected to a plurality of cooling units.

[0007] The present invention is a freezing zone highway cooling system based on road surface temperature monitoring. The system is provided with a temperature sensor, and one end of the temperature sensor is connected to a road section to be monitored, and the temperature of the road section to be monitored is obtained through the temperature sensor. The system is also provided with a temperature difference control unit. Through the connection of the temperature difference control unit and the temperature sensor, the temperature difference control unit can receive the temperature data of the road surface to be monitored collected by the temperature sensor. The output end of the temperature difference control unit is connected with a plurality of cooling units, so that the temperature difference control unit can control the cooling unit according to the temperature data of the road surface to be monitored, and cool the road section to be monitored through the cooling unit. The system can reduce the transfer of heat to the frozen soil, improve the stability of the roadbed, effectively reduce the cracking, settlement and instability and other diseases of the frozen zone highway caused by thermal thawing settlement, reduce the maintenance frequency and maintenance cost of the highway, and thus extend the service life of the highway.

[0008] As a preferred solution of the present invention, the system further comprises an energy supply unit, wherein the energy supply unit comprises 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] The combined design of power generation and energy storage devices can store excess energy during periods of low energy demand and release it during peak energy demand periods, thereby 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 comprises an air curtain machine, the air curtain machine is provided with an air outlet, the air outlet is arranged toward the road section to be monitored, and the air outlet direction is horizontal to the road section to be monitored.

[0012] By setting up an air curtain machine, the refrigerant in the cooling system can be produced through the air curtain machine, and the air curtain machine is provided with an outlet that can output the refrigerant. The outlet direction of the outlet is parallel to the road surface. The outlet direction is set so that the high-speed airflow flows parallel to the road surface. The airflow forms a uniform and continuous air barrier above the road surface, which effectively isolates the external heat from being transferred to the road surface, prevents the direct contact between the high-temperature air and the road surface, and thus significantly reduces the road surface temperature; the high-speed airflow parallel to the road surface improves the convective heat exchange efficiency between the ground surface and the air, quickly removes the heat accumulated on the road surface, reduces the accumulation of heat on the road surface and roadbed, and further reduces the road surface temperature; the present application not only blocks the 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, reduces the heat absorption of the asphalt road surface, and effectively weakens 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 away from the ground.

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

[0015] Since most highway sections have heavy traffic, when vehicles pass through the highway, the road surface will vibrate due to the weight and speed of the vehicles, causing the air curtain machine to be disturbed to a certain extent, thereby affecting its normal operation and cooling effect. By placing the air curtain machine on a shock-absorbing bracket, the shock-absorbing bracket can effectively absorb and alleviate the vibration transmitted to the air curtain machine when the vehicle passes, avoiding the equipment from being offset, loose or performance degradation due to vibration, and ensuring the normal operation of the cooling system.

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

[0017] As a preferred solution of the present invention, two adjacent cooling units located on the same side of the road section to be monitored are arranged at an interval of 8m-10m.

[0018] As a preferred solution of the present invention, a communication module is provided in the temperature difference control unit, and the communication module 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 also 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, and compare the road surface temperature data with the external environment 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 setting up a battery, a backup power supply can be provided for the system. When the external power supply is insufficient or fluctuating, the cooling system can be ensured to operate stably, avoiding unstable or interrupted cooling effects due to power problems, and improving the reliability and continuity of the system; the inverter is responsible for converting the DC power stored in the battery into the required AC power, providing continuous power support for 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 batteries and inverters, the temperature difference control unit can adjust the working state of the cooling unit according to real-time temperature data. The inverter provides precise power supply for the temperature difference control unit, ensuring that the system can automatically adjust according to changes in road surface temperature, improving the intelligence and adaptability of the system.

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

[0023] Wind turbines and solar photovoltaic panels are both green and environmentally friendly energy supply devices. By setting the power generation device as a wind turbine and / or a solar photovoltaic panel, the environmental friendliness of the system is improved. At the same time, most permafrost areas are located in high latitudes and high altitudes. The ultraviolet rays in high latitudes will increase with the increase of altitude in the atmosphere. By installing solar photovoltaic panels, natural resources can be better utilized to achieve energy conservation and environmental protection.

[0024] As a preferred solution of the present invention, the cooling units are symmetrically arranged along the shoulders on both sides of the highway section to be monitored.

[0025] or;

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

[0027] or;

[0028] The cooling units are arranged in a staggered manner along the shoulders on both sides of the highway on the highway section to be monitored.

[0029] or;

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

[0031] By providing a variety of solutions such as symmetrical arrangement of shoulders on both sides of the highway, interval arrangement of shoulders on one side, staggered arrangement of shoulders on both sides, and symmetrical arrangement of the middle strip, the system can select the best arrangement method according to the actual conditions of the highway, ensuring the cooling effect while improving design flexibility.

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

[0033] As a preferred solution of the present invention, the spacing arrangement of shoulders on one side of the highway is applied to secondary highways, tertiary highways and quaternary highways, as well as highways with a road width of more than 9 meters.

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

[0035] As a preferred solution of the present invention, the symmetrical arrangement along the middle strip of the highway is applied to expressways and first-class highways, as well as highways with a width of more than 16 meters.

[0036] In a second aspect, a cooling method of a frozen soil area highway cooling system based on road surface temperature monitoring is provided, using the above-mentioned frozen soil area highway cooling system based on road surface temperature monitoring, and the method comprises:

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

[0038] The temperature sensor collects the road surface temperature of the highway section to be monitored in real time;

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

[0040] When the road surface temperature of the monitored highway section is less than or equal to the external environment 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] The present invention is a cooling method for a cooling system of a frozen soil highway based on road surface temperature monitoring. The road surface temperature and the external environment temperature of the monitored highway section are monitored in real time, and the temperature data is processed using a temperature difference control unit. When the road surface temperature of the monitored highway section is higher than the external environment temperature, the system automatically controls the cooling device to start and cool the road surface, thereby effectively reducing the road surface temperature and preventing the frozen soil from melting and the roadbed from becoming unstable. This method can accurately control the temperature and avoid energy waste. At the same time, it delays the degradation of the roadbed of frozen soil highways, increases the service life of the highway, and has strong adaptability and environmental protection.

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

[0043] 1. The present invention is a cooling system for frozen soil highways based on road surface temperature monitoring. The system is provided with a temperature sensor, and one end of the temperature sensor is connected to a road section to be monitored, and the temperature of the road section to be monitored is obtained through the temperature sensor. The system is also provided with a temperature difference control unit. Through the connection between the temperature difference control unit and the temperature sensor, the temperature difference control unit can receive the temperature data of the road surface to be monitored collected by the temperature sensor. The output end of the temperature difference control unit is connected with a plurality of cooling units, so that the temperature difference control unit can control the cooling unit according to the temperature data of the road surface to be monitored, and cool the road section to be monitored through the cooling unit; the system can reduce the transfer of heat to frozen soil by setting a cooling unit on the road section to be monitored and cooling the road section to be monitored through the cooling unit, thereby improving the stability of the roadbed, effectively reducing the cracking, settlement and instability and other diseases of frozen soil highways caused by thermal thawing settlement, reducing the maintenance frequency and maintenance cost of the highway, and thus extending the service life of the highway.

[0044] 2. The present invention is a highway cooling system in frozen soil areas based on road surface temperature monitoring. The system is provided with a power generation device, which provides power for the temperature monitoring unit and the cooling unit. The power generation device in the system is configured as a wind turbine and / or a solar photovoltaic panel, and both the wind turbine and the solar photovoltaic panel are green and environmentally friendly energy supply devices. By configuring the power generation device as a wind turbine and / or a solar photovoltaic panel, the environmental friendliness of the system is improved. Meanwhile, frozen soil areas are mostly located in high latitudes and high altitudes. Ultraviolet rays in high latitudes will increase with the increase of the altitude in the atmosphere. By installing solar photovoltaic panels on the roadside, the natural energy in the road area can be better utilized to achieve energy conservation and environmental protection.

[0045] 3. The present invention is a highway cooling system for frozen soil areas based on road surface temperature monitoring. It realizes modular connection between the temperature monitoring unit, the cooling unit and the energy supply unit, and can be quickly installed at the construction site. The system adopts a non-excavation, rapid and non-destructive installation method, which does not affect normal traffic and can shorten the construction period.

[0046] 4. The present invention is a cooling method for a cooling system for frozen soil highways based on road surface temperature monitoring. The road surface temperature and the external environment temperature of the monitored highway section are monitored in real time, and the temperature data is processed using a temperature difference control unit. When the road surface temperature of the monitored highway section is higher than the external environment temperature, the system automatically controls the cooling device to start and cool the road surface, thereby effectively reducing the road surface temperature and preventing the frozen soil from melting and the roadbed from becoming unstable. This method can accurately control the temperature and avoid energy waste. At the same time, it delays the degradation of the roadbed of frozen soil highways, increases the service life of the highway, and has strong adaptability and environmental protection.

[0047] 5. The present invention is a cooling method for a highway cooling system in a frozen soil area based on road surface temperature monitoring. In this method, when the temperature of the monitored highway section is lower than the external ambient temperature, the cooling unit does not work, the temperature difference control unit cuts off the connection with the cooling unit, and connects with the energy supply unit, and charges the battery through the power generation device in the energy supply unit, ensuring that the system has sufficient energy reserves to meet subsequent operation needs, thereby ensuring the stability of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a connection diagram of the cooling system (including wind turbines and solar photovoltaic panels) of the present invention;

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

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

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

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

[0053] Figure 6 It is a schematic diagram of the cooling units of the present invention being arranged at intervals along a single-side shoulder of a highway;

[0054] Figure 7 It is a schematic diagram of the cooling units of the present invention being arranged staggered along the shoulders on both sides of the highway;

[0055] Figure 8 It is a schematic diagram of the cooling units of the present invention being symmetrically arranged along the shoulders on both sides of the highway;

[0056] Fig. 9 It is a schematic diagram of the cooling units of the present invention being symmetrically arranged along the middle strip of a highway;

[0057] Fig.10 It is a flow chart of the cooling method of the present invention.

[0058] Reference numerals

[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-energy supply unit; 31-energy storage device; 311-battery; 312-inverter; 32-power generation device. DETAILED DESCRIPTION

[0060] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0061] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are based on the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments to facilitate the technicians to quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation of the present invention.

[0062] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0063] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0064] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0065] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0066] Example 1

[0067] A road cooling system in a frozen soil region based on road surface temperature monitoring, the system comprises a temperature monitoring unit 2, the temperature monitoring unit 2 is provided with a temperature sensor 21 which is attached to the road section to be monitored, the temperature condition of the road section to be monitored in each time period can be recorded in real time through the temperature sensor 21, the temperature monitoring unit 2 also comprises a temperature difference control unit 22, the temperature difference control unit 22 is used to record the road surface temperature of the road section to be monitored monitored by the temperature sensor 21, and compare the road surface temperature of the road section to be monitored obtained by monitoring with the external environment temperature;

[0068] The temperature difference control unit 22 is connected to and controls a plurality of cooling units 1, which are arranged on the shoulder of the road section to be monitored, and the cooling units 1 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 arranged below the air curtain machine 11. The shock-absorbing bracket 12 is arranged because most roads are sections with large traffic volume. When a vehicle passes through the road, the road surface will vibrate due to the weight and speed of the vehicle, causing the air curtain machine 11 to be disturbed to a certain extent, thereby affecting 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 alleviate the vibration transmitted to the air curtain machine 11 when the vehicle passes, avoiding the equipment from being offset, loose or performance degradation due to vibration, and ensuring the normal operation of the cooling system;

[0070] Furthermore, an air outlet 111 is provided on the air curtain machine 11, and the air outlet direction is parallel to the road surface. The air outlet direction of the air outlet 111 is set to make the high-speed airflow flow parallel to the road surface, and the airflow forms a uniform and continuous air barrier above the road surface, which effectively isolates the external heat from being transferred to the road surface, prevents 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 exchange efficiency between the ground surface and the air, quickly removes the heat accumulated on the road surface, reduces the accumulation of heat on the road surface and the roadbed, and further reduces the road surface temperature. At the same time, the present application not only blocks the 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, reduces the heat absorption of the asphalt road surface, and effectively weakens the heat accumulation effect of the asphalt road surface.

[0071] In one or several 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 several 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 adopts centrifugal flow or axial flow.

[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 for providing power to the entire system, the energy supply unit 3 includes a power generation device 32 for generating energy, the power generation device 32 is connected to an energy storage device 31, the energy storage device 31 receives and stores energy provided by the power generation device 32, and converts the energy and transmits it to the temperature monitoring unit 2 and the cooling unit 1;

[0076] Furthermore, the energy storage device 31 includes a storage battery 311. By providing the storage battery 311, a backup power supply can be provided for the system. When the external power supply is insufficient or fluctuates, the stable operation of the cooling system can be ensured, and the unstable or interrupted cooling effect caused by power problems can be avoided, thereby 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 storage 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 direct current stored in the storage battery 311 into the required alternating current, so as 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, the wind turbine and the solar photovoltaic panel can effectively utilize natural resources and provide renewable energy for the system. The wind turbine converts wind energy into electrical energy, while the solar photovoltaic panel converts solar radiation into electrical energy. By setting the power generation device 32 as a wind turbine and / or a solar photovoltaic panel, the system can not only reduce dependence on traditional fossil energy and reduce carbon emissions, but also improve the sustainability and environmental protection of energy use. Moreover, frozen land areas are usually located in high latitudes and high altitudes, with severe cold climates and abundant sunshine. Especially in high latitudes, the intensity of ultraviolet rays increases with the increase of altitude in the atmosphere. The summer days in high latitudes are longer and the solar radiation is stronger, which makes solar photovoltaic panels have a higher power generation potential in this area. By installing solar photovoltaic panels in these areas, we can make full use of the abundant local solar energy resources, improve energy self-sufficiency, reduce external dependence on energy supply, and reduce environmental burden. Wind energy resources are also very abundant in high-altitude areas, especially in mountainous or open areas, where wind speeds are high and wind turbines can more efficiently convert wind energy into electricity. Combining wind power generation with solar photovoltaic panels can not only ensure the continuity of energy supply, but also supplement energy demand through wind power generation when there is insufficient sunlight, thus achieving all-weather, stable green energy supply.

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

[0079] Furthermore, the installation location of the solar photovoltaic panels is selected on the slope surface and foot of the sunny side of the roadbed, and is installed using the construction and installation method of the sunshade roadbed. The distance between the solar photovoltaic panels and the slope is 40 cm, thereby further reducing the heat flux of solar radiation entering the soil layer and reducing the impact of solar thermal radiation on the permafrost underlying the roadbed.

[0080] In one or more embodiments, a communication module 221 is provided in the temperature difference control unit 22, and the communication module 221 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, wherein 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, and compare the road surface temperature data with the external environment temperature data, and control the cooling unit 1.

[0082] Example 2

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

[0084] The cooling units 1 are arranged on the highway in the following ways: symmetrically arranged along the shoulders on both sides of the highway, arranged at intervals along the shoulders on one side of the highway, staggered arranged along the shoulders on both sides of the highway, and symmetrically arranged along the middle strip of the highway;

[0085] Furthermore, the symmetrical arrangement of shoulders on both sides of the highway is applied to expressways, first-class highways and second-class highways, as well as highways with a width of more than 9m; the staggered arrangement of shoulders on one side of the highway is applied to second-class highways, third-class highways and fourth-class highways, as well as highways with a width of more than 9m; the staggered arrangement of shoulders on both sides of the highway is applied to second-class highways and highways with a width of more than 9m; the symmetrical arrangement along the middle strip of the highway is applied to expressways and first-class highways, as well as highways with a width of more than 16m.

[0086] Example 3

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

[0088] A cooling method for a highway cooling system in a frozen soil region based on road surface temperature monitoring, comprising:

[0089] Obtaining the external environment temperature data of the highway section to be monitored;

[0090] By installing a temperature sensor 21 on the road section to be monitored, the temperature data of the road section to be monitored can be obtained in real time.

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

[0092] The temperature difference control unit 22 compares the road surface temperature data of the monitored highway section with the external environment temperature data to obtain comparison information;

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

[0094] According to the comparison information, when the road surface temperature of the monitored highway section is lower than the external environment temperature, the temperature difference control unit 22 turns off the cooling unit 1, and the power generation device 32 starts and charges the energy storage device 31;

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

[0096] Optionally, the power generation device 32 and the temperature difference control unit 22 realize signal interaction through the communication module 221. When the road surface temperature of the monitored highway section is lower than the external ambient temperature, the temperature difference control unit 22 generates a control signal and sends the signal to the power generation device 32 through 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 in the protection scope of the present invention.

Claims

1. A highway cooling system in frozen soil areas based on road surface temperature monitoring, characterized in that: It comprises a temperature monitoring unit (2), the temperature monitoring unit (2) comprising a temperature sensor (21) and a temperature difference control unit (22), one end of the temperature sensor (21) is connected to a road section to be monitored, and the other end is connected to the temperature difference control unit (22), and the output end of the temperature difference control unit (22) is connected to a plurality of cooling units (1).

2. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 1, characterized in that: The cooling unit (1) comprises an air curtain machine (11), the air curtain machine (11) being provided with an air outlet (111), the air outlet (111) being arranged towards the road section to be monitored, and the air outlet direction being parallel to the road section to be monitored.

3. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 2, characterized in that: The cooling unit (1) further comprises a shock absorbing bracket (12), and the shock absorbing bracket (12) is connected to the air curtain machine (11).

4. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 3, characterized in that: Two adjacent cooling units (1) located on the same side of the road section to be monitored are arranged at an interval of 8m-10m.

5. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 4, characterized in that: The temperature difference control unit (22) is provided with a communication module (221), and the communication module (221) is used to transmit the road surface temperature data of the road section to be monitored measured by the temperature sensor (21) to the temperature difference control unit (22).

6. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 5, characterized in that: The temperature difference control unit (22) further comprises a storage module (222) and a processor module (223), wherein the storage module (222) is used to store the road surface temperature data of the road section to be monitored transmitted by the communication module (221); the processor module (223) is used to receive the road surface temperature data of the road section to be monitored, and compare the road surface temperature data of the road section to be monitored with the external environment temperature data, and control the cooling unit (1).

7. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 6, characterized in that: The cooling units (1) are symmetrically arranged along the shoulders on both sides of the highway section to be monitored. or; The cooling units (1) are arranged at intervals along the shoulder on one side of the highway on the highway section to be monitored. or; The cooling units (1) are arranged in a staggered manner along the shoulders on both sides of the highway on the highway section to be monitored. or; The cooling units (1) are symmetrically arranged along the middle strip of the highway on the highway section to be monitored.

8. A road cooling system in frozen soil areas based on road surface temperature monitoring according to any one of claims 1 to 7, characterized in that: The system further comprises an energy supply unit (3), wherein the energy supply unit (3) comprises an energy storage device (31), wherein one end of the energy storage device (31) is connected to the temperature difference control unit (22), and the other end is connected to a power generation device (32); The energy storage device (31) is used to store the energy generated by the power generation device (32).

9. A road cooling system in frozen soil areas based on road surface temperature monitoring according to claim 8, characterized in that: The energy storage device (31) comprises a storage battery (311) and an inverter (312); one end of the storage battery (311) is connected to the inverter (312), and the other end is connected to the power generation device (32); one end of the inverter (312) is connected to the temperature difference control unit (22), and the other end is connected to the inverter (312).

10. A cooling method for a highway cooling system in a frozen soil area based on road surface temperature monitoring, characterized in that: A road cooling system in a frozen soil region based on road surface temperature monitoring as described in any one of claims 8 to 9 is used, and the method comprises: Obtaining the external ambient temperature of the highway section to be monitored; The temperature sensor (21) collects the road surface temperature of the road section to be monitored in real time; When the road surface temperature of the monitored highway section is higher than the external environment temperature, the temperature difference control unit (22) controls the cooling unit (1) to discharge air, thereby forming an airflow barrier above the monitored highway section, reducing heat exchange and achieving cooling; When the road surface temperature of the highway section to be monitored is less than or equal to the external ambient temperature, the temperature difference control unit (22) controls the cooling unit (1) to stop working, and at this time, the power generation device (32) charges the energy storage device (31).

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