Tunnel guiding system and method and tunnel group comprehensive monitoring management center

Abstract

The invention provides a tunnel guiding system and method and a tunnel group comprehensive monitoring management center, and relates to the technical field of tunnel engineering. The tunnel guiding system comprises a tunnel monitoring module, a data processing module and a guiding module, wherein the data processing module is respectively connected with the tunnel monitoring module and the guiding module; the tunnel monitoring module is used for acquiring state information of a tunnel; the data processing module is used for determining to guide vehicles in the tunnel based on a first guide strategy under the condition that the state information represents that the tunnel is at a first congestion degree; and the guiding module is used for sending corresponding guiding information according to the first guiding strategy. The tunnel guiding system can execute the corresponding guiding strategy according to the congestion condition of the tunnel so as to guide the vehicles running in the tunnel, and the effectiveness of the guiding strategy can be improved, so that the traffic efficiency of the tunnel is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel engineering, and in particular to a tunnel guidance system, method and a tunnel group comprehensive monitoring and management center. Background Art

[0002] As a confined space, compared with other types of road sections, tunnels have a closed environment and complex structures, which makes it difficult for drivers to make reasonable driving decisions based on the specific congestion conditions in the tunnel when traffic congestion occurs in the tunnel, which can easily lead to greater congestion or even chain accidents. CN201920128101.5 discloses a highway tunnel safety operation monitoring system, which includes a tunnel entrance vehicle information collection camera set at the tunnel entrance and a tunnel exit vehicle information collection camera set at the tunnel exit. When a vehicle accident occurs in the tunnel, the number of accident vehicles and related information can be obtained based on the vehicle information collection camera, but it cannot assist drivers in making reasonable driving decisions, and there is a problem of easily causing safety hazards. Summary of the invention

[0003] The present application provides a tunnel guidance system, method and tunnel group comprehensive monitoring and management center, which can guide vehicles traveling in the tunnel by monitoring the congestion situation in the tunnel and executing corresponding guidance strategies according to the congestion situation in the tunnel, thereby improving the effectiveness of the guidance strategy and thus improving the traffic efficiency of the tunnel.

[0004] In a first aspect, a tunnel guidance system is provided in an embodiment of the present application, and the tunnel guidance system may include: a tunnel monitoring module, a data processing module and a guidance module, wherein the data processing module is connected to the tunnel monitoring module and the guidance module respectively; the tunnel monitoring module is used to obtain status information of the tunnel; the data processing module is used to determine to guide the vehicles in the tunnel based on a first guidance strategy when the status information indicates that the tunnel is at a first congestion level; and the guidance module is used to broadcast corresponding guidance information according to the first guidance strategy.

[0005] In the above implementation, the tunnel guidance system can process the tunnel status information obtained by the tunnel monitoring module, determine the specific congestion level in the tunnel according to the status information, and then execute different guidance strategies according to different congestion levels. Therefore, the tunnel guidance system proposed in the embodiment of the present application can adopt targeted vehicle guidance strategies according to different congestion levels in the actual tunnel scene, which can improve the effectiveness of the guidance strategy and thus improve the traffic efficiency of the tunnel, and reduce the probability of causing safety hazards in the tunnel.

[0006] In some embodiments, when the first congestion level is level one congestion, the first guidance strategy may include: The guiding module located at the entrance transition section of the tunnel is controlled to release the vehicle flow of each lane in the tunnel.

[0007] In some embodiments, the guidance module includes a variable information board; when the first congestion level is level 2 congestion, the first guidance strategy may include: Control the guidance module located at the entrance transition section of the tunnel to broadcast the traffic flow of each lane in the tunnel; adjust the speed limit value of the variable speed limit control area in the tunnel, and control the guidance module located in the variable speed limit control area to broadcast the speed limit value; and control the variable information board to display diversion prompt information.

[0008] In some embodiments, when the first congestion level is level 3 congestion, the first guidance strategy may include: Control the guidance module located in the entrance transition section of the tunnel to broadcast the traffic flow of each lane in the tunnel; adjust the speed limit value of the variable speed limit control area in the tunnel, and control the guidance module located in the variable speed limit control area to broadcast the speed limit value; send flow limit prompt information to the terminal equipment of the toll station on the highway where the tunnel is located; and send diversion prompt information to the terminal equipment at the diversion point of the highway where the tunnel is located.

[0009] In the above implementation, the tunnel guidance system can process the tunnel status information obtained by the tunnel monitoring module, and after quantitatively analyzing the specific congestion level in the tunnel according to the status information, divide the tunnel congestion level into three different levels according to the quantitative analysis results, and execute the corresponding guidance strategy for each level of congestion. Therefore, the tunnel guidance system proposed in the embodiment of the present application can adopt different levels of vehicle guidance strategies according to different levels of congestion in the actual tunnel scene, so as to improve the effectiveness of the guidance strategy and thus improve the traffic efficiency of the tunnel, and reduce the probability of causing safety hazards in the tunnel.

[0010] In some embodiments, the status information may include the actual illumination of a first road section and the traffic volume of the first road section; the first road section is any section of the tunnel; the data processing module is also used to adjust the lighting brightness of the first lamp according to the actual illumination of the first road section and the traffic volume of the first road section; wherein, the first lamp is a lamp of the guidance module arranged in the first road section.

[0011] In the above implementation, the tunnel guidance system can determine the required lighting brightness of each road section according to the actual illumination of each road section and the traffic flow, and make corresponding lighting brightness adjustments, which can improve the effectiveness and stability of tunnel lighting and reduce lighting energy consumption.

[0012] In some embodiments, the guidance module includes a tunnel lighting control submodule and a driving guidance submodule; the tunnel lighting submodule includes a host computer, a dimming controller and a plurality of tunnel lamps; the dimming controller is connected to the host computer and the plurality of tunnel lamps respectively; wherein the host computer is used to receive instructions from the data processing module and send a control signal to the dimming controller, and the dimming controller is used to control the brightness of the plurality of tunnel lamps according to the control signal; The driving guidance submodule includes a traffic light, a lane indicator and a broadcast transmitter; the traffic light, the lane indicator and the broadcast transmitter are all connected to the data processing module; wherein the traffic light is used to convey traffic control instructions through a variety of lights, the lane indicator is used to display lane guidance information, and the broadcast transmitter is used to send broadcasts.

[0013] In some embodiments, the multiple tunnel lamps include an entrance section lamp group, a middle section lamp group, a dynamic configuration section lamp group and an exit section lamp group; wherein, the brightness of each lamp in the same lamp group is consistent, the brightness of the lamps in the entrance section lamp group and the exit section lamp group is greater than the brightness of the lamps in the dynamic configuration section lamp group, and the brightness of the lamps in the dynamic configuration section lamp group is greater than the brightness of the lamps in the middle section lamp group.

[0014] In the above implementation, by dividing the tunnel lamps into different lamp groups according to their different locations in the tunnel and configuring a technical solution with different brightness for each lamp group, the safety of driving in the tunnel can be improved, and energy consumption can be reduced while improving the quality of tunnel lighting.

[0015] In some embodiments, the tunnel monitoring module includes multiple radar devices, multiple video surveillance devices and multiple illuminance meters; the multiple radar devices, the multiple video surveillance devices and the multiple illuminance meters are all connected to the data processing module; wherein the multiple radar devices and the multiple video surveillance devices are used to obtain the movement information of the vehicles in the tunnel, and the multiple illuminance meters are used to obtain the brightness information inside and outside the tunnel.

[0016] In the above implementation, by using a combination of multiple radar devices and video surveillance devices to conduct comprehensive monitoring of vehicles in the tunnel, the movement information of vehicles in the tunnel can be fully acquired, the comprehensiveness of the acquired data can be improved, and the accuracy of the data can be enhanced through the complementarity of different technologies.

[0017] In some embodiments, the plurality of illuminometers include a first illuminometer and a second illuminometer, wherein the first illuminometer is disposed outside the tunnel, and the second illuminometer is disposed inside the tunnel.

[0018] In the above implementation, by installing illuminance meters inside and outside the tunnel, the brightness information inside and outside the tunnel can be monitored and compared in real time, and the lighting intensity at the tunnel entrance can be intelligently adjusted, thereby improving the visual comfort of the driver.

[0019] In a second aspect, an embodiment of the present application provides a tunnel guidance method, which can be applied to a tunnel guidance system. The method may include: Acquire tunnel status information; determine to guide vehicles in the tunnel based on a first guidance strategy when the status information indicates that the tunnel is at a first congestion level; and broadcast corresponding guidance information according to the first guidance strategy.

[0020] In a third aspect, an embodiment of the present application provides a tunnel group integrated monitoring and management center, wherein the tunnel group integrated monitoring and management center includes one or more tunnel guidance systems described in the above description.

[0021] Compared with the prior art, the beneficial effect of the present application is that the tunnel guidance system can determine the specific congestion level in the tunnel according to the status information obtained by the tunnel monitoring module, and then execute different guidance strategies according to different congestion levels. Therefore, the tunnel guidance system proposed in the embodiment of the present application can adopt targeted vehicle guidance strategies according to different congestion levels in the actual tunnel scene, which can improve the effectiveness of the guidance strategy and thus improve the traffic efficiency of the tunnel, and reduce the probability of causing safety hazards in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 A connection diagram of a tunnel guidance system provided in an embodiment of the present application.

[0022] Figure 2 A connection diagram of a tunnel monitoring module provided in an embodiment of the present application.

[0023] Figure 3 A connection diagram of the guidance module provided in an embodiment of the present application.

[0024] Figure 4 A schematic diagram of the arrangement of a tunnel guidance system provided in an embodiment of the present application located in a tunnel.

[0025] Figure 5 A schematic diagram of the structure of the tunnel group comprehensive monitoring and management center provided in an embodiment of the present application.

[0026] Figure 6 A schematic diagram of the operation of multiple guidance modules for the integrated monitoring and management center for a tunnel group provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present application being limited to the following embodiments, and all technologies implemented based on the content of the present application belong to the scope of protection of the present application.

[0028] Unless otherwise specified, in the description of the specific embodiments of the present application, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", "side", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present application 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 on the present application.

[0029] In the description of the embodiments of the present application, the technical terms "first", "second", etc. only distinguish one entity or operation from another entity or operation, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In addition, in the description of the technical solution of the present application, 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 methods 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.

[0032] During the research process, the applicant discovered that compared with other types of road sections, tunnels have a closed environment and complex structures. Therefore, when traffic congestion occurs in tunnels, the congestion situation is more complicated than that of other road sections, and more targeted guidance strategies are needed to guide vehicles to improve traffic efficiency. In the prior art, a unified guidance method is adopted for traffic congestion in tunnels, and whether traffic congestion occurs is detected. If traffic congestion occurs, traffic guidance is carried out. This guidance method is not suitable for traffic congestion in tunnels. Therefore, after research, the applicant proposed a tunnel guidance system, which aims to formulate guidance strategies for complex tunnel traffic congestion and guide vehicles in the tunnel based on the guidance strategies.

[0033] Please see Figure 1 , Figure 1 A connection diagram of a tunnel guidance system provided in an embodiment of the present application. The tunnel guidance system 10 may include a tunnel monitoring module 11, a data processing module 12 and a guidance module 13, wherein the data processing module 12 is connected to the tunnel monitoring module 11 and the guidance module 13 respectively.

[0034] In some embodiments, the data processing module 12 may be an independent terminal device. In this case, the data processing module 12 is responsible for one tunnel monitoring module 11 and one guiding module 13 .

[0035] The terminal device may be a computing device such as a desktop computer, a notebook, a handheld computer, or a cloud server.

[0036] The tunnel monitoring module 11 is used to obtain the status information of the tunnel. The data processing module 12 is used to determine to guide the vehicles in the tunnel based on the first guidance strategy when the status information indicates that the tunnel is in the first congestion level. The guidance module 13 is used to broadcast the corresponding guidance information according to the first guidance strategy.

[0037] The following first introduces the components of each module of the tunnel guidance system 10 proposed in the embodiment of the present application. Figure 1 See on the basis of Figure 2 , Figure 2 A connection diagram of a tunnel monitoring module provided in an embodiment of the present application. The tunnel monitoring module 11 may include multiple radar devices 111, multiple video monitoring devices 112, and multiple illuminance meters 113; the multiple radar devices 111, multiple video monitoring devices 112, and multiple illuminance meters 113 are all connected to the data processing module 12; wherein the multiple radar devices 111 and multiple video monitoring devices 112 are used to obtain the movement information of vehicles in the tunnel, and the multiple illuminance meters 113 are used to obtain the brightness information inside and outside the tunnel.

[0038] The tunnel may refer to a tunnel in a high-speed road. The state information of the tunnel may include the movement information of the vehicle, the actual illumination in the tunnel, etc. The movement information of the vehicle may include the profile, shape, size, vehicle type, position, speed, direction, etc. of the vehicle.

[0039] In addition, the status information of the tunnel may also include traffic flow data, environmental monitoring data, fire safety monitoring data, lighting and ventilation status data, drainage monitoring data, etc. Traffic flow data can be used to analyze traffic congestion in the tunnel, optimize traffic management strategies, prevent traffic accidents, and evaluate evacuation efficiency and required resources in emergency situations. Environmental monitoring data may include temperature, humidity, carbon monoxide concentration, smoke concentration, visibility, etc., which can be used to monitor whether the environment in the tunnel is suitable for driving, prevent traffic accidents caused by environmental factors such as poor visibility and fire risks, and ensure that the tunnel structure is not damaged by environmental factors. Fire safety monitoring data may include fire detector signals, fire equipment status (such as fire extinguishers, sprinkler systems), smoke concentration, etc., which can be used to respond to emergencies such as fires, ensure the effective operation of the fire protection system, reduce fire losses, and protect personnel safety. Lighting and ventilation status data may include lighting brightness, ventilation wind speed, fan operation status, etc., which can be used to ensure lighting and air quality in the tunnel, improve driving safety and comfort, and optimize energy efficiency. Drainage monitoring data can include water levels inside and outside the tunnel, flow in the drainage pipe, etc., which can be used to prevent floods from invading the tunnel and avoid tunnel damage and traffic interruptions caused by water damage.

[0040] In some embodiments, the radar device 111 may be a millimeter wave radar, and a plurality of radar devices 111 may be arranged at a first distance interval. The first interval may range from 200 meters to 400 meters. In a specific implementation, it may be set to 200 meters, 250 meters, 300 meters, 350 meters, 400 meters, etc. The scanning frequency of the radar device 111 may be selected from 60Ghz, 76-81Ghz, 98Ghz, etc. The radar device 111 may be arranged on the side wall of a tunnel to detect and identify vehicles in the tunnel, and generate point cloud data according to the motion trajectory of the vehicle, and the point cloud data may include information such as the outline, shape, and size of the vehicle.

[0041] In some embodiments, the video monitoring device 112 may be a camera, and the video monitoring device 112 may be set at the entrance and exit of the tunnel. The video monitoring device 112 generates video data by photographing and recording vehicles entering and exiting the tunnel. The video data may include information such as vehicle type, location, speed, and direction.

[0042] In some embodiments, multiple illuminometers 113 may include a first illuminometer 1131 and a second illuminometer 1132, wherein the first illuminometer 1131 is arranged outside the tunnel, and may be arranged at a position 10 to 15 meters away from the tunnel entrance, and may be used to monitor natural lighting conditions so that the tunnel guidance system 10 can adjust the lighting intensity at the tunnel entrance according to the brightness of the external environment; the second illuminometer 1132 is arranged inside the tunnel, and may be arranged at a position 50 to 200 meters away from the tunnel entrance, and may be used to monitor the actual lighting brightness inside the tunnel in real time.

[0043] In the above embodiment, by using a combination of multiple radar devices and video surveillance equipment to comprehensively monitor vehicles in the tunnel, the movement information of vehicles in the tunnel can be fully obtained, the comprehensiveness of the acquired data can be improved, and the accuracy of the data can be enhanced through the complementarity of different technologies. By setting up illuminometers inside and outside the tunnel, the brightness information inside and outside the tunnel can be monitored and compared in real time, and the lighting intensity at the entrance of the tunnel can be intelligently adjusted, thereby improving the visual comfort of the driver.

[0044] Please Figure 1 See on the basis of Figure 3 , Figure 3 A connection diagram of the guidance module provided in the embodiment of the present application. The guidance module 13 may include a tunnel lighting control submodule 131 and a driving guidance submodule 132; the tunnel lighting submodule may include a host computer 1311, a dimming controller 1312 and a plurality of tunnel lamps 1313; the dimming controller 1312 is respectively connected to the host computer 1311 and the plurality of tunnel lamps 1313; wherein the host computer 1311 is used to receive instructions from the data processing module 12 and send a control signal to the dimming controller 1312, and the dimming controller 1312 is used to control the brightness of the plurality of tunnel lamps 1313 according to the control signal.

[0045] The host computer 1311 may be an industrial control computer, a programmable logic controller or a workstation, etc., which may receive instructions from the data processing module 12 and send precise control signals to the dimming controller 1312 .

[0046] The dimming controller 1312 may be a stepless dimming controller, which can smoothly adjust the lighting intensity of the tunnel lamp 1313 according to the lighting requirements of the tunnel by continuously changing the current or voltage.

[0047] The tunnel lamp 1313 may be an LED tunnel lamp. The tunnel lamp 1313 may be arranged in different ways according to different sections of the tunnel. For example, the basic section lighting of the tunnel may be arranged in a staggered manner on both sides, while the enhanced lighting section lighting of the tunnel may be arranged in a symmetrical manner on both sides. The installation height of the tunnel lamp 1313 may be set between 5 meters and 6 meters, such as 5.2 meters, 5.4 meters, 5.6 meters, 5.8 meters, etc.

[0048] In some embodiments, the tunnel lamps 1313 can be divided into different lamp groups according to different positions in the tunnel, and the lamp groups can include an entrance segment lamp group, a middle segment lamp group, a dynamic configuration segment lamp group, and an exit segment lamp group. Among them, the brightness of each lamp in the same lamp group is consistent, the brightness of the lamps in the entrance segment lamp group and the exit segment lamp group is greater than the brightness of the lamps in the dynamic configuration segment lamp group, and the brightness of the lamps in the dynamic configuration segment lamp group is greater than the brightness of the lamps in the middle segment lamp group. The lamps in the dynamic configuration segment lamp group can be controlled independently by a single lamp. The host computer 1311 can dynamically adjust the brightness of different lamps in the dynamic configuration segment lamp group according to the ambient brightness outside the tunnel and the instructions of the data processing module 12, so as to realize the dynamic configuration of the length and brightness of each lighting segment in the tunnel.

[0049] Among them, setting the entrance and exit lamp groups to higher brightness can reduce the visual impairment caused by the "black hole effect" and "white hole effect" to the driver, which helps the driver to quickly adapt to the light changes when entering and exiting the tunnel, and improve the safety of tunnel driving. The dynamic configuration segment lamp group is configured to a moderate brightness, which can be flexibly adjusted according to the actual traffic flow, vehicle speed and weather conditions to ensure the visual comfort of the driver when driving in the tunnel and reduce the driver's visual fatigue. The interior of the tunnel is relatively closed, the light changes little, and the driver is less sensitive to light changes. By configuring the brightness of the middle segment lamp group to a relatively low brightness, energy consumption can be reduced while ensuring the lighting quality.

[0050] In the above embodiment, by dividing the tunnel lamps into different lamp groups according to their different locations in the tunnel and configuring a technical solution with different brightness for each lamp group, the safety of driving in the tunnel can be improved, and energy consumption can be reduced while improving the quality of tunnel lighting.

[0051] The driving guidance submodule 132 may include a traffic light 1321, a lane indicator 1322 and a broadcast transmitter 1323; the traffic light, the lane indicator and the broadcast transmitter are all connected to the data processing module 12; wherein the traffic light is used to convey traffic control instructions through a variety of lights, the lane indicator is used to display lane guidance information, and the broadcast transmitter is used to send broadcasts.

[0052] Among them, the traffic lights 1321, lane indicators 1322 and broadcast transmitters 1323 can broadcast guidance information corresponding to the guidance strategy determined by the data processing module 12 through their own multiple groups of different light-emitting units and multiple groups of broadcast voices according to the signals sent by the data processing module 12, such as driving safety guidance, anti-rear-end collision warnings, upstream event warnings, construction work warnings, evacuation route prompts, etc.

[0053] After introducing the various modules of the tunnel guidance system 10, the following describes how the tunnel guidance system 10 proposed in the embodiment of the present application implements different guidance strategies according to the congestion levels of traffic in different tunnels.

[0054] In some embodiments, the data processing module 12 may determine the congestion level of the tunnel according to the tunnel status information based on a traffic congestion detection method of a travel time index (TTI), and then select a corresponding guidance strategy according to the current congestion level.

[0055] in, is the travel time index of the i-th section in the tunnel.

[0056] in, is the real-time travel time of road segment i, It is the travel time in the free flow state. The free flow state refers to the state where the traffic flow is small and vehicles can travel at the design speed or close to the design speed.

[0057] in, is the mileage of the i-th section in the tunnel. The larger the TTI value is, the higher the congestion level is. In the embodiment of the present application, when the TTI value of the i-th section in the tunnel is less than or equal to 1, it indicates that the traffic is smooth; when the TTI value is between 1 and 1.5, it indicates that the current congestion level is level 1 congestion; when the TTI value is between 1.5 and 2.0, it indicates that the current congestion level is level 2 congestion; when the TTI value is greater than 2.0, it indicates that the current congestion level is level 3 congestion. If it is greater than 1.5, the alarm mechanism of the entire tunnel can be triggered.

[0058] In the above implementation process, when the value of TTI is less than or equal to 1, it can be said that the travel time of the current road section is shorter than or equal to the travel time under free flow conditions. In this case, it can be said that the traffic on the road section is very smooth, and vehicles can freely travel at a speed close to the maximum speed limit without encountering obvious congestion or delay. When the value of TTI is between 1 and 1.5, it indicates that the travel time of the current road section is slightly longer than the travel time under free flow conditions, but the increase in time is not much. In this case, the congestion level of the current road section can be determined as first-level congestion, which means that although the traffic volume on the road section is large, vehicles can still travel relatively smoothly, but the speed is reduced, or in some cases, they need to wait a little. When the value of TTI is between 1.5 and 2.0, it means that the travel time of the current road section is 1.5 to 2 times that under free flow conditions. In this case, the congestion level of the current road section can be determined as second-level congestion, indicating that the traffic conditions are relatively poor, vehicles travel slowly, and may need to stop and wait frequently. When the value of TTI is greater than 2.0, it means that the travel time of the current road section is at least twice or more than that under free flow conditions. In this case, it can be determined that the congestion level of the current road section is level 3 congestion, which means that the traffic is almost stagnant and vehicles may have to wait for a long time to move forward a few meters, which may even cause traffic paralysis.

[0059] In other embodiments, the congestion level can be divided in a more detailed manner. For example, when the TTI value of the i-th section in the tunnel is less than or equal to 1, it indicates that the traffic is unblocked; when the TTI value is between 1 and 1.25, it indicates that the current congestion level is level 1 congestion; when the TTI value is between 1.25 and 1.5, it indicates that the current congestion level is level 2 congestion; when the TTI value is between 1.5 and 1.75, it indicates that the current congestion level is level 3 congestion; when the TTI value is between 1.75 and 2, it indicates that the current congestion level is level 4 congestion; when the TTI value is greater than 2.0, it indicates that the current congestion level is level 5 congestion. When the congestion level is divided into 5 levels or divided in other ways, it can be adaptively adjusted according to the guidance strategy of the above three levels of congestion.

[0060] Please see Figure 4 , Figure 4 A schematic diagram of the arrangement of a tunnel guidance system provided in an embodiment of the present application located in a tunnel.

[0061] In the embodiment of the present application, when the first congestion level is level one congestion, the first guidance strategy includes: The guiding module 13 located at the entrance transition section of the tunnel is controlled to release the traffic flow of each lane in the tunnel.

[0062] In some embodiments, when the TTI value of any section of the tunnel is between 1 and 1.5, it can be determined that the current section of the tunnel is level one congested. At this time, the data processing module 12 can determine to adopt a lane-by-lane traffic control strategy to guide vehicles traveling in the current section.

[0063] Specifically, the lane-by-lane traffic control strategy means that the data processing module 12 can control the traffic broadcaster of the guidance module 13 to broadcast in advance before the vehicle enters the tunnel, that is, at the entrance transition section of the tunnel, to inform the driver of the traffic volume of each lane in the tunnel so that the driver can choose to enter a lane with less traffic. The traffic broadcaster can also broadcast traffic congestion, estimated passing time, or recommended lanes to assist the driver in making decisions.

[0064] In the embodiment of the present application, when the first congestion level is level 2 congestion, the first guidance strategy may include: Control the guidance module 13 located at the entrance transition section of the tunnel to broadcast the traffic flow of each lane in the tunnel; adjust the speed limit value of the variable speed limit control area in the tunnel, and control the guidance module 13 located in the variable speed limit control area to broadcast the speed limit value; and control the variable information board 1324 to display diversion prompt information.

[0065] In some embodiments, when the TTI value of any section of the tunnel is between 1.5 and 2.0, it can be determined that the current section of the tunnel is level 2 congestion. At this time, the data processing module 12 can determine to adopt lane-by-lane traffic control, variable speed limit and guided diversion strategies to guide vehicles traveling in the current section.

[0066] Specifically, the lane-divided traffic flow control strategy means that the data processing module 12 can control the traffic broadcaster of the guidance module 13 to broadcast in advance before the vehicle enters the tunnel, that is, at the entrance transition section of the tunnel, to inform the driver of the traffic flow of each lane in the tunnel so that the driver can choose to enter the lane with less traffic. The variable speed limit strategy means that the data processing module 12 can adjust the speed limit value of the upstream variable speed limit control area according to the change of the actual lane occupancy rate in the congested section, and display the adjusted speed limit value to the guidance module 13 set in the variable speed limit control area. The guiding and diversion strategy means that the data processing module 12 can control the information displayed on the variable information board 1324 of the guiding module 13 to guide travelers to voluntarily choose a driving route according to the road conditions ahead and their own travel purposes, so as to reduce the traffic pressure at the bottleneck of the main line tunnel. The displayed information may include dynamic road condition information, such as "road congestion ahead", "queue at the toll station ahead", "construction ahead", "road closure ahead", etc., traffic emergency information, such as traffic accidents, natural disasters, public health events, social security events and other events that affect the normal operation of traffic, etc., prediction and guidance information, such as the traffic conditions available for selection in a certain direction, such as green for "unblocked" roads, yellow for "congested" roads, and red for "blocked" roads.

[0067] In the embodiment of the present application, when the first congestion level is level 3 congestion, the first guidance strategy may include: Control the guidance module 13 located in the entrance transition section of the tunnel to broadcast the traffic flow of each lane in the tunnel; adjust the speed limit value located in the variable speed limit control area in the tunnel, and control the guidance module 13 located in the variable speed limit control area to broadcast the speed limit value; send flow limit prompt information to the terminal equipment of the toll station on the highway where the tunnel is located; and send diversion prompt information to the terminal equipment at the diversion point on the highway where the tunnel is located.

[0068] In some embodiments, when the TTI value of any section of the tunnel is greater than 2.0, it can be determined that the current section of the tunnel is level 3 congestion. At this time, the data processing module 12 can determine to adopt lane-by-lane traffic control, variable speed limit, forced flow limit and main line forced diversion strategies to guide vehicles traveling in the current section.

[0069] Specifically, the lane-divided traffic flow control strategy means that the data processing module 12 can control the traffic broadcaster of the guidance module 13 to broadcast in advance before the vehicle enters the tunnel, that is, at the entrance transition section of the tunnel, to inform the driver of the traffic flow of each lane in the tunnel so that the driver can choose to enter the lane with less traffic. The variable speed limit strategy means that the data processing module 12 can adjust the speed limit value of the upstream variable speed limit control area according to the change of the actual lane occupancy rate in the congested section, and display the adjusted speed limit value to the guidance module 13 set in the variable speed limit control area. The forced flow limit strategy means that the data processing module 12 can send flow limit prompt information to the terminal equipment of the toll station on the highway where the tunnel is located. After receiving the flow limit prompt information, the terminal equipment of the toll station can prompt the toll station staff to perform entrance traffic control or automatically perform entrance traffic control to limit the number of vehicles entering the tunnel. The main line forced diversion strategy means that the data processing module 12 can send diversion prompt information to the terminal equipment at the diversion point of the highway where the tunnel is located. After receiving the diversion prompt information, the terminal equipment at the diversion point can prompt the staff at the diversion point to set up signs and markings at the diversion point, and cooperate with the traffic control department on-site duty to forcibly divert the main line vehicles to other roads.

[0070] In the above embodiment, the tunnel guidance system can process the tunnel status information obtained by the tunnel monitoring module, and after quantitatively analyzing the specific congestion level in the tunnel according to the status information, divide the tunnel congestion level into three different congestion levels according to the quantitative analysis results, and execute the corresponding guidance strategy for each congestion level. Therefore, the tunnel guidance system proposed in the embodiment of the present application can adopt different levels of vehicle guidance strategies according to different levels of congestion levels in the actual tunnel scene, so as to improve the effectiveness of the guidance strategy and thus improve the traffic efficiency of the tunnel, and reduce the probability of causing safety hazards in the tunnel.

[0071] In the embodiment of the present application, the status information may include the actual illumination of the first section and the traffic volume of the first section; the first section is any section of the tunnel.

[0072] The data processing module 12 can also be used to adjust the lighting brightness of the first lamp according to the actual illumination of the first road section and the traffic volume of the first road section; wherein the first lamp is a lamp arranged in the guide module 13 in the first road section.

[0073] In some embodiments, the data processing module 12 may adjust the illumination brightness of the first lamp according to the actual illumination of the first road section and the traffic volume of the first road section in the following manner: Among them, P is the tunnel design lighting brightness; V is the tunnel design driving speed; S is the lamp arrangement spacing; Q is the lighting brightness; is the minimum luminous flux required for the tunnel lighting section (lm); L is the length of the first section in the tunnel (m); N is the lamp arrangement coefficient. In the embodiment of the present application, N is 1 for staggered arrangement and 2 for symmetrical arrangement; is the lamp utilization coefficient, which can be taken as 0.5 in the embodiment of the present application; M is the lamp maintenance coefficient, which can be taken as 0.7 in the embodiment of the present application; T is the average travel time, which refers to the average time required for a vehicle to pass through the tunnel; D is the tunnel road width (including only the lane width) (m); W is the lamp power; is the required brightness value (cd / m2) under the specified vehicle speed and traffic volume conditions; k is the illumination conversion coefficient. In the embodiment of the present application, if the road section of the tunnel is an asphalt road surface, k=15lx / (cd / m2) can be taken.

[0074] In the above implementation, since the required lighting brightness of the tunnel is different under different weather conditions, the actual illumination of the first section can be characterized by parameters such as the tunnel design lighting brightness, lighting section length, lamp layout coefficient, lamp maintenance coefficient, lamp utilization coefficient, and illumination conversion coefficient, and the traffic volume of the first section can be characterized by parameters such as the average travel time and the tunnel design driving speed. The minimum luminous flux required for the tunnel lighting section is determined by the actual illumination of the first section and the traffic volume of the first section, and the lighting brightness of the first lamp is adjusted according to the minimum luminous flux required for the tunnel lighting section.

[0075] In the above embodiment, the tunnel guidance system can determine the required lighting brightness of each road section according to the actual illumination of each road section and the traffic flow, and make corresponding lighting brightness adjustments, which can improve the effectiveness and stability of tunnel lighting and reduce lighting energy consumption.

[0076] It should be understood that the values ​​of the parameters in the above embodiments are exemplary and can be adjusted according to the actual conditions of the tunnel during specific applications, and should not be regarded as limitations in this application.

[0077] The present application also provides a tunnel guidance method in an embodiment, which can be applied to the tunnel guidance system provided in the above description or the tunnel group comprehensive monitoring management center in the following description. The tunnel guidance method may include: S1. Obtain tunnel status information; S2. When the state information indicates that the tunnel is at a first congestion level, determining to guide vehicles in the tunnel based on a first guidance strategy; S3. Broadcast corresponding guidance information according to the first guidance strategy.

[0078] In some embodiments, when the first congestion level is level one congestion, the first guidance strategy may include: The guidance module located at the entrance transition section of the tunnel controls the traffic flow of each lane in the tunnel.

[0079] In some embodiments, when the first congestion level is level 2 congestion, the first guidance strategy may include: Control the guidance module located at the entrance transition section of the tunnel to broadcast the traffic flow of each lane in the tunnel; adjust the speed limit value of the variable speed control area in the tunnel, and control the guidance module located in the variable speed control area to broadcast the speed limit value; and control the variable information board of the tunnel guidance system to display the diversion prompt information.

[0080] In some embodiments, when the first congestion level is level 3 congestion, the first guidance strategy may include: Control the guidance module located in the entrance transition section of the tunnel to broadcast the traffic flow of each lane in the tunnel; adjust the speed limit value in the variable speed limit control area in the tunnel, and control the guidance module in the variable speed limit control area to broadcast the speed limit value; send flow limit prompt information to the terminal equipment of the toll station on the highway where the tunnel is located; and send diversion prompt information to the terminal equipment at the diversion point on the highway where the tunnel is located.

[0081] In some embodiments, the state information may include actual illumination of the first road section and traffic volume of the first road section; the first road section is any road section of the tunnel; The tunnel guidance method may further include adjusting the lighting brightness of the first lamp according to the actual illumination of the first road section and the traffic volume of the first road section; wherein the first lamp is a lamp arranged in the guidance module in the first road section.

[0082] Among them, the specific methods for implementing the above-mentioned tunnel guidance method can be found in the above-mentioned description of the tunnel guidance system 10, which will not be repeated here.

[0083] In other embodiments, the data processing module 12 may also be a working module of the tunnel group integrated monitoring management center. Figure 5 and Figure 6 , Figure 5 A schematic diagram of the structure of the tunnel group comprehensive monitoring and management center provided in an embodiment of the present application. Figure 6 The schematic diagram of the operation of the tunnel group integrated monitoring and management center provided in the embodiment of the present application provides a plurality of guide modules. When the data processing module 12 is used as a working module of the tunnel group integrated monitoring and management center 60, the tunnel group integrated monitoring and management center 60 can control a plurality of tunnel monitoring modules 11 and a plurality of guide modules 13.

[0084] In some embodiments, the tunnel group integrated monitoring and management center 60 may also include multiple monitoring and management sub-centers, and one monitoring and management sub-center may control one or more tunnel monitoring modules 11 and guidance modules 13. Among them, the difference between the tunnel group integrated monitoring and management center 60 and the monitoring and management sub-center lies in the functional positioning, scope of responsibilities and system structure. The tunnel group integrated monitoring and management center 60 can be responsible for comprehensive monitoring, management and coordination of various tunnel monitoring modules and guidance modules, and has the functions of centralized monitoring, unified management, comprehensive analysis, regional emergency response, etc., and can realize remote monitoring and control of all equipment in the tunnel group. As a subordinate unit of the tunnel group integrated monitoring and management center 60, the monitoring and management sub-center is specifically responsible for monitoring and managing one or more tunnel monitoring modules 11 and guidance modules 13 in a specific area, receiving and processing real-time data from tunnel monitoring equipment, and performing alarms, early warnings and emergency disposal according to preset rules and strategies, as well as providing real-time data and alarm information to the tunnel group integrated monitoring and management center 60, and accepting its unified management and scheduling.

[0085] Please continue to see Figure 6 . The tunnel group integrated monitoring management center 60 may include a data processing module 12, a memory 61 and an alarm 62. The data processing module 12 may process various monitoring data of the tunnel monitoring system. Including traffic flow data such as vehicle type, speed, and traffic volume, which are used to analyze traffic congestion in the tunnel, optimize traffic management strategies, prevent traffic accidents, and evaluate evacuation efficiency and required resources in emergency situations. Environmental monitoring data such as temperature, humidity, carbon monoxide concentration, smoke concentration, visibility, etc., monitor whether the environment in the tunnel is suitable for driving, prevent traffic accidents caused by environmental factors such as poor visibility and fire risks, and ensure that the tunnel structure is not damaged by environmental factors. Fire safety monitoring data such as fire detector signals, fire equipment status (such as fire extinguishers, sprinkler systems), and smoke concentration, quickly respond to emergencies such as fires, ensure the effective operation of the fire protection system, reduce fire losses, and protect personnel safety. Video monitoring data such as real-time video images inside and outside the tunnel monitor traffic behavior, promptly detect and handle abnormal situations such as traffic accidents, pedestrian intrusions, and vehicle failures, and provide direct evidence for accident investigations. The status data of lighting and ventilation systems, such as lighting brightness, ventilation speed, and fan operation status, ensure that the tunnel is adequately lit and has good air quality, improve driving safety and comfort, and optimize energy efficiency. The water level changes inside and outside the water tunnel, the flow rate of drainage pipes, and other data on the status and drainage system prevent floods from invading the tunnel, ensure the effective operation of the drainage system, and avoid tunnel damage and traffic interruption caused by water damage.

[0086] The data processing module 12 can also use statistical methods, machine learning algorithms, etc. to conduct in-depth analysis on the pre-processed data to extract useful information and features. For example, by analyzing the traffic flow data, the traffic congestion in the tunnel can be understood; by analyzing the environmental monitoring data, it can be evaluated whether the environment in the tunnel is suitable for driving. The data processing module 12 refines the information and features obtained from the analysis to form key indicators that can reflect the operating status of the tunnel, and can compare the extracted key indicators with the set thresholds to evaluate whether the operating status of the tunnel is safe. In addition, the data processing module 12 can also consider the mutual influence and correlation between multiple different indicators, conduct comprehensive analysis and judgment, and trigger the alarm mechanism when the key indicators exceed the set thresholds, and adopt different induced control strategies.

[0087] The memory 61 can be used to store these monitoring data and historical records for a long time. The collected monitoring data are cleaned to remove redundant information, erroneous data and abnormal values, and formatted for subsequent data analysis and processing.

[0088] Optionally, the memory 61 may be an internal storage unit of the data processing module 12 in some embodiments, such as a hard disk or memory of the data processing module 12. The memory 61 may also be an external storage device of the data processing module 12 in other embodiments, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the data processing module 12. Further, the memory 61 may also include both an internal storage unit of the data processing module 12 and an external storage device. The memory 61 may be used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as program codes of a computer program. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0089] The alarm 62 can be used to send an alarm prompt message when the data processing module 12 triggers the alarm mechanism. When it is greater than 1.5, a control signal can be sent to the alarm 62, and the alarm 62 sends an alarm prompt information to trigger the alarm mechanism of the entire tunnel. The alarm 62 can send alarm prompt information in the form of sound and light alarm, SMS alarm, APP push alarm, etc. Among them, the sound and light alarm can be a strong sound and flashing light to alarm. The SMS alarm can be sending the alarm information to the designated tunnel manager via SMS. The APP push alarm can be pushing the alarm information to the designated tunnel manager in real time via APP.

[0090] In the case where the data processing module 12 serves as a working module of the tunnel group comprehensive monitoring and management center 60, its implementation method of determining the method of guiding the vehicle in the tunnel based on the first guidance strategy, and its implementation method of adjusting the lighting brightness of the first lamp according to the actual illumination of the first section and the traffic flow of the first section can be found in the above description and will not be repeated here.

[0091] It should be understood that the data processing module 12 provided in the above embodiment only uses the division of the functional modules in the above description as an example when determining the way to guide the vehicle in the tunnel based on the first guidance strategy, and adjusting the lighting brightness of the first lamp according to the actual illumination of the first road section and the traffic flow of the first road section. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0092] The functional modules in the above embodiments may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit, and the above integrated unit may be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the embodiments of the present application.

[0093] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A tunnel guidance system, characterized in that: include: A tunnel monitoring module, a data processing module and a guiding module, wherein the data processing module is connected to the tunnel monitoring module and the guiding module respectively; The tunnel monitoring module is used to obtain the status information of the tunnel; The data processing module is used for determining to guide the vehicle in the tunnel based on a first guidance strategy when the state information indicates that the tunnel is at a first congestion level; The guidance module is used to broadcast corresponding guidance information according to the first guidance strategy.

2. The system according to claim 1, characterized in that When the first congestion level is level one congestion, the first guidance strategy includes: The guiding module located at the entrance transition section of the tunnel is controlled to release the vehicle flow of each lane in the tunnel.

3. The system according to claim 1, characterized in that The guidance module includes a variable information board; when the first congestion level is level 2 congestion, the first guidance strategy includes: Controlling the guide module located at the entrance transition section of the tunnel to release the traffic flow of each lane in the tunnel; Adjusting the speed limit value of the variable speed limit control area in the tunnel, and controlling the guidance module located in the variable speed limit control area to broadcast the speed limit value; And control the variable information board to display drainage prompt information.

4. The system according to claim 1, characterized in that When the first congestion level is level 3 congestion, the first guidance strategy includes: Controlling the guide module located at the entrance transition section of the tunnel to release the traffic flow of each lane in the tunnel; Adjusting the speed limit value of the variable speed limit control area in the tunnel, and controlling the guidance module located in the variable speed limit control area to broadcast the speed limit value; Sending a flow limit prompt message to a terminal device at a toll station on the highway where the tunnel is located; And sending diversion prompt information to the terminal equipment at the diversion point of the highway where the tunnel is located.

5. The system according to claim 1, characterized in that The state information includes actual illumination of a first road section and traffic volume of the first road section; the first road section is any road section of the tunnel; The data processing module is also used to adjust the lighting brightness of the first lamp according to the actual illumination of the first road section and the traffic volume of the first road section; wherein the first lamp is a lamp arranged in the guide module in the first road section.

6. The system according to any one of claims 1 to 5, characterized in that: The guidance module includes a tunnel lighting control submodule and a driving guidance submodule; the tunnel lighting submodule includes a host computer, a dimming controller and a plurality of tunnel lamps; the dimming controller is connected to the host computer and the plurality of tunnel lamps respectively; wherein the host computer is used to receive instructions from the data processing module and send a control signal to the dimming controller, and the dimming controller is used to control the brightness of the plurality of tunnel lamps according to the control signal; The driving guidance submodule includes a traffic light, a lane indicator and a broadcast transmitter; the traffic light, the lane indicator and the broadcast transmitter are all connected to the data processing module; wherein the traffic light is used to convey traffic control instructions through a variety of lights, the lane indicator is used to display lane guidance information, and the broadcast transmitter is used to send broadcasts.

7. The system according to claim 6, characterized in that The multiple tunnel lamps include an entrance section lamp group, a middle section lamp group, a dynamic configuration section lamp group and an exit section lamp group; wherein, the brightness of each lamp in the same lamp group is consistent, the brightness of the lamps in the entrance section lamp group and the exit section lamp group is greater than the brightness of the lamps in the dynamic configuration section lamp group, and the brightness of the lamps in the dynamic configuration section lamp group is greater than the brightness of the lamps in the middle section lamp group.

8. The system according to any one of claims 1 to 5, characterized in that: The tunnel monitoring module includes multiple radar devices, multiple video surveillance devices and multiple illuminance meters; the multiple radar devices, the multiple video surveillance devices and the multiple illuminance meters are all connected to the data processing module; wherein the multiple radar devices and the multiple video surveillance devices are used to obtain the movement information of the vehicles in the tunnel, and the multiple illuminance meters are used to obtain the brightness information inside and outside the tunnel.

9. A tunnel guidance method, characterized in that: Applied to a tunnel guidance system, the method comprises: Get the status information of the tunnel; When the state information indicates that the tunnel is at a first congestion level, determining to guide vehicles in the tunnel based on a first guidance strategy; Corresponding guidance information is broadcast according to the first guidance strategy.

10. A tunnel group integrated monitoring and management center, characterized in that: The tunnel group comprehensive monitoring and management center includes one or more tunnel guidance systems according to any one of claims 1-8.

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