Highway tunnel monitoring equipment

Abstract

The utility model relates to the technical field of highway tunnels, and provides a highway tunnel monitoring device which comprises a first traffic safety door frame, a second traffic safety door frame and an exit RSU antenna, the first traffic safety door frame is installed at an entrance of a tunnel, and a laser radar and a license plate recognition camera are installed on the first traffic safety door frame. The laser radar is electrically connected with the license plate recognition camera, the second traffic safety door frame is installed on the side, away from the tunnel, of the first traffic safety door frame, the entrance RSU antenna is installed on the second traffic safety door frame, and the exit RSU antenna is installed at the exit of the tunnel. Wherein the entrance RSU antenna obtains the number and specific positioning of vehicles, the laser radar obtains the specific contour of each vehicle, the license plate recognition camera obtains the specific license plate of each vehicle and then obtains the specific type of the vehicle, and the exit RSU antenna can obtain the number and the type of vehicles leaving the tunnel. And further deducing the number of vehicles in the tunnel and the specific vehicle type.

Description

Technical Field

[0001] The utility model relates to the technical field of safe driving in highway tunnels, in particular to a highway tunnel monitoring device. Background Art

[0002] Highway tunnels are passages for automobile transportation. With the development of social economy and production, a large number of highways have emerged, which put forward higher standards for road construction technology, requiring straight lines, gentle slopes, and wide roads. Therefore, when roads pass through mountainous areas, the previous winding route is often changed to a tunnel. The construction of tunnels plays an important role in improving the technical status of highways, shortening operating distances, increasing transportation capacity, and reducing accidents.

[0003] At present, traffic accidents still occur in tunnels, such as rollovers, fires, rear-end collisions, and collisions with tunnel walls. The number and type of vehicles in the tunnel are critical to the prevention and handling of accidents. How to obtain the number and type of vehicles information to improve the level of tunnel operation safety management and control. Utility Model Content

[0004] The utility model aims to provide a highway tunnel monitoring device, aiming to solve the technical problem of how to obtain vehicle quantity information and vehicle type information in a highway tunnel.

[0005] The present application provides a highway tunnel monitoring device, which includes a first traffic security gantry, a second traffic security gantry and an exit RSU antenna. The first traffic security gantry is installed at the entrance of the tunnel. The first traffic security gantry is equipped with a laser radar and a license plate recognition camera. The laser radar and the license plate recognition camera are electrically connected. The second traffic security gantry is installed on a side of the first traffic security gantry away from the tunnel. The second traffic security gantry is equipped with an entrance RSU antenna. The exit RSU antenna is installed at the exit of the tunnel.

[0006] In one of the embodiments, the first traffic safety portal is also equipped with a strobe light, the strobe light is electrically connected to the laser radar, and the strobe light works synchronously with the license plate recognition camera.

[0007] In one of the embodiments, the number of the laser radars and the license plate recognition cameras is the same as the number of lanes in the tunnel, and they correspond one to one.

[0008] In one of the embodiments, the number of the entrance RSU antennas is the same as the number of lanes in the tunnel and corresponds one to one.

[0009] In one of the embodiments, the number of the exit RSU antenna is one, and the highway tunnel monitoring equipment further includes an exit antenna gantry, and one of the exit RSU antennas is installed on the exit antenna gantry.

[0010] In one of the embodiments, the number of the exit RSU antennas is the same as the number of lanes in the tunnel and corresponds one to one, and the highway tunnel monitoring equipment also includes a third traffic safety gantry, and the exit RSU antenna is installed on the third traffic safety gantry.

[0011] In one of the embodiments, the highway tunnel monitoring equipment further includes a plurality of RSU antennas in the tunnel, and the plurality of RSU antennas in the tunnel are distributed in sequence along a direction from the entrance of the tunnel to the exit of the tunnel.

[0012] In one of the embodiments, the interval between two adjacent RSU antennas in the tunnel is 100m to 200m.

[0013] In one of the embodiments, the RSU antenna in the tunnel is installed on the side wall of the tunnel.

[0014] In one of the embodiments, the highway tunnel monitoring equipment further includes a plurality of monitoring cameras, and the plurality of monitoring cameras are distributed in sequence along a direction from the entrance of the tunnel to the exit of the tunnel.

[0015] In one embodiment, the interval between two adjacent surveillance cameras is 100m to 200m.

[0016] In one of the embodiments, one of the surveillance cameras is installed next to the first traffic security gate.

[0017] In one embodiment, the highway tunnel monitoring equipment also includes a base station, which is installed on the first traffic safety gate, and the laser radar and the license plate recognition camera are electrically connected to the base station respectively.

[0018] The beneficial effects of the highway tunnel monitoring equipment provided by the utility model are as follows: the entrance RSU antenna installed on the second traffic security gantry can obtain the number of vehicles entering the tunnel, the laser radar located in the forward direction of the entrance RSU antenna and installed on the first traffic security gantry can obtain the specific outline of each vehicle, and the license plate recognition camera can obtain the specific license plate of each vehicle, and the specific type of the vehicle can be known through the specific outline and specific license plate of each vehicle, the exit RSU antenna can obtain the specific vehicle leaving the tunnel and the vehicle type corresponding to the vehicle, and then the number of vehicles and specific vehicle types located in the tunnel can be inferred, which solves the technical problem of how to obtain vehicle quantity information and vehicle type information in a highway tunnel, thereby providing vehicle information for the prediction and handling of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the assembly of a highway tunnel monitoring device provided by an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of a highway tunnel monitoring device located at a tunnel entrance provided in this embodiment;

[0022] Figure 3 A schematic diagram of a highway tunnel monitoring device located at a tunnel exit provided in this embodiment;

[0023] Figure 4 A schematic diagram of a highway tunnel monitoring device located in the middle of a tunnel provided for this embodiment.

[0024] Among them, the reference numerals in the figure are:

[0025] 10. Tunnel;

[0026] 110, first traffic safety portal; 120, laser radar; 130, license plate recognition camera; 140, base station;

[0027] 210, second traffic security gate; 220, entrance RSU antenna;

[0028] 310, export RSU antenna; 320, export antenna gantry;

[0029] 410. RSU antenna in the tunnel; 420. Surveillance camera; 430. Emergency telephone equipment; 440. Entrance toll station; 450. Exit toll station; 460. Fourth traffic security gate; 470. First auxiliary RSU antenna; 480. Second auxiliary RSU antenna. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The ETC system includes a road side unit (RSU) antenna, an on-board unit (OBU) and a central management device, and is mainly used for toll collection on highways. When a vehicle equipped with an OBU passes through a toll booth, the RSU antenna first needs to locate the OBU and determine that the OBU is the target interactive device. Subsequently, the RSU antenna obtains the vehicle driving information of the OBU and sends the vehicle driving information to the central management device. Finally, the central management device deducts the toll payable from the vehicle's contracted account based on the vehicle driving information.

[0036] Tunnels are prone to accidents due to their inherent properties (including traffic safety facilities, road engineering facilities, etc.), control measures, weather and other factors. This puts forward higher requirements for accident prevention, instant detection of events and accidents, rapid response, and emergency disposal in tunnels. Operators need to build a comprehensive tunnel operation and control platform, fully improve the monitoring level of tunnel operation status, and build a multi-dimensional emergency response system for emergency events, so as to prevent accidents before, discover accidents in time, and respond quickly after accidents. By improving the weak links of tunnels, the hidden dangers of traffic accidents can be reduced, the occurrence of traffic accidents in tunnels can be reduced, the safety of life and property of drivers and passengers can be guaranteed, and the quality of tunnel services can be improved. However, the first priority is how to obtain data on the number and type of vehicles in the tunnel.

[0037] Please combine Figures 1 to 3 The present application provides a highway tunnel monitoring device. The highway tunnel monitoring device includes a first traffic security gantry 110, a second traffic security gantry 210 and an exit RSU antenna 310, the first traffic security gantry 110 is installed at the entrance of the tunnel 10, the first traffic security gantry 110 is installed with a laser radar 120 and a license plate recognition camera 130, the laser radar 120 and the license plate recognition camera 130 are electrically connected, the second traffic security gantry 210 is installed on a side of the first traffic security gantry 110 away from the tunnel 10, the second traffic security gantry 210 is installed with an entrance RSU antenna 220, and the exit RSU antenna 310 is installed at the exit of the tunnel 10.

[0038] Among them, the entrance RSU antenna 220 installed on the second traffic safety gantry 210 can obtain the number of vehicles, the laser radar 120 located in the forward direction of the entrance RSU antenna 220 and installed on the first traffic safety gantry 110 can obtain the specific outline of each vehicle, and the inherent function of the license plate recognition camera 130 can obtain the specific license plate of each vehicle. The specific type of the vehicle can be known through the specific outline and specific license plate of each vehicle. The exit RSU antenna 310 can obtain the specific vehicle leaving the tunnel 10 and the vehicle type corresponding to the vehicle with the license plate, and then the number of vehicles and specific vehicle types located in the tunnel 10 can be inferred, thereby providing vehicle data for the prediction and handling of accidents.

[0039] Specifically, for vehicles, the entrance RSU antenna 220 obtains the time when the vehicle arrives at the entrance of the tunnel 10 in real time, and obtains the speed of the vehicle when it passes through the first traffic safety gantry 110 based on the distance between the first traffic safety gantry 110 and the second traffic safety gantry 210 and the inherent detection function of the laser radar 120. At the same time, based on the inherent detection functions of the laser radar 120 and the license plate recognition camera 130, the vehicle's license plate, model, position, profile, speed, heading angle and other full-factor perception data are obtained, providing vehicle data for the prediction and processing of accidents, and can better simulate the vehicle's driving path in the tunnel 10 and analyze risks.

[0040] Among them, "two passengers and one dangerous goods" refers to chartered vehicles for tourism, regular passenger buses of Class 3 or above, and special road vehicles for transporting dangerous chemicals, fireworks, and civilian explosives. These vehicles are highly dangerous because they carry a large number of passengers or transport items. By obtaining vehicle type data, accurately identify "two passengers and one dangerous goods" or other key vehicles with clear characteristic identification, and through real-time monitoring of the lane-level position, vehicle driving posture and vehicle traffic flow characteristics of key vehicles, achieve full-area tracking and monitoring of key vehicles such as "two passengers and one dangerous goods" in Tunnel 10, use event inference services to infer abnormal driving behaviors such as speeding and illegal lane changes of key vehicles, quickly identify abnormal behaviors and accident events of key vehicles, and issue timely warnings to improve the management and control efficiency of key vehicles and strengthen the risk prevention and control capabilities of operation in Tunnel 10.

[0041] Specifically, the entrance RSU antenna 220 has a positioning accuracy of equal to or less than 30 cm for the vehicle. Through high-precision positioning, the specific position of each vehicle entering the tunnel 10 can be accurately recorded. Combined with the vehicle speed information obtained by the laser radar 120, the entrance RSU antenna 220 with high positioning accuracy can more accurately monitor the real-time speed and driving trajectory of the vehicle, which is conducive to accident prediction and handling.

[0042] In one embodiment, in combination Figure 1 and Figure 2 The first traffic safety gate 110 is also equipped with a strobe light, which is electrically connected to the laser radar 120, and the strobe light and the license plate recognition camera 130 work synchronously. The strobe light can provide an additional light source at night or in low light conditions, which can make the vehicle easier to detect and identify, improve the capture accuracy of the license plate recognition camera 130, enhance the traffic monitoring effect, and improve safety. Since the strobe light and the license plate recognition camera 130 are both electrically connected to the laser radar 120, the laser radar 120 can make the strobe light and the license plate recognition camera 130 work simultaneously according to the position of the vehicle, and the strobe light provides a light source for the license plate recognition camera 130.

[0043] In one embodiment, in combination Figure 1 and Figure 2, the number of laser radars 120 and license plate recognition cameras 130 is the same as the number of lanes in tunnel 10, and they correspond one to one. Each lane is equipped with a laser radar 120 and a license plate recognition camera 130, which can fully monitor the vehicle conditions in each lane, ensure that there are no blind spots, and improve the coverage and accuracy of highway tunnel monitoring equipment. Each lane has a dedicated laser radar 120 and license plate recognition camera 130, which can detect abnormal situations more quickly and comprehensively, such as illegal parking, out-of-control vehicles, etc., and promptly alarm and deal with them, thereby improving the safety and smoothness of road traffic.

[0044] In one embodiment, in combination Figure 1 and Figure 2 The number of the entrance RSU antennas 220 is the same as the number of lanes of the tunnel 10, and corresponds one to one. By setting the entrance RSU antennas 220 to match the number of lanes, interference and overlap of communication signals can be avoided, communication efficiency and stability can be improved, and unimpeded communication between vehicles and infrastructure can be ensured.

[0045] In one embodiment, in combination Figure 1 and Figure 3 , the number of the exit RSU antenna 310 is one, and the highway tunnel monitoring device further includes an exit antenna gantry 320, and one exit RSU antenna 310 is installed on the exit antenna gantry 320. By reducing the number of the exit RSU antennas 310, it is helpful to reduce the cost of the highway tunnel monitoring device. At the same time, the exit RSU antenna 310 only needs to obtain the corresponding vehicle leaving the tunnel 10, and does not need to pay too much attention to the positioning accuracy, speed, and real-time performance of the vehicle, so it is not necessary to equip each lane with an exit RSU antenna 310.

[0046] In another embodiment, in combination Figure 1 and Figure 3 , the number of exit RSU antennas 310 is the same as the number of lanes in the tunnel 10, and they correspond one to one. The highway tunnel monitoring equipment also includes a third traffic safety gantry, and multiple exit RSU antennas 310 are installed on the third traffic safety gantry. Each lane is equipped with an exit RSU antenna 310 to improve the specific lane position of the vehicle leaving the tunnel 10, and then verify whether the vehicle's movement trajectory is accurate, including the predicted lane position and the time to arrive at the exit RSU antenna 310, which is transmitted to the server, which is conducive to better obtaining the vehicle's trajectory in the tunnel 10 in the next step, and judging whether the vehicle has overtaking, speeding and other abnormal conditions on the track.

[0047] In one embodiment, in combination Figure 1 and Figure 4The highway tunnel monitoring device further includes a plurality of tunnel RSU antennas 410 located in the tunnel 10, and the plurality of tunnel RSU antennas 410 are sequentially spaced from the entrance of the tunnel 10 to the exit of the tunnel 10. The plurality of tunnel RSU antennas 410 provide more communication nodes, which are conducive to more accurate tracking and positioning of vehicle positions, and provide more accurate data support for intelligent traffic management.

[0048] Specifically, the interval between two adjacent RSU antennas 410 in tunnels is 100m to 200m, which can improve the communication coverage density, increase the number of communication nodes, and further enhance the coverage and transmission effect of communication signals while ensuring the communication coverage range. The RSU antennas 410 in tunnels spaced 100m to 200m apart can track the vehicle position and driving status more accurately, provide more accurate vehicle data information for the traffic management system, and facilitate real-time monitoring and positioning of the vehicle position.

[0049] Optionally, the interval between the RSU antennas 410 in two adjacent tunnels is 100m, 120m, 150m, 180m, or 200m.

[0050] In one of the embodiments, the RSU antenna 410 in the tunnel is installed on the side wall of the tunnel 10, which can prevent the RSU antenna 410 in the tunnel from being blocked by vehicles or other obstacles, avoid installing a gantry inside the tunnel 10, and reduce the space occupied by the tunnel 10.

[0051] In some embodiments, in combination Figure 1 , Figure 2 and Figure 4 The highway tunnel monitoring equipment also includes a plurality of monitoring cameras 420, which are spaced in sequence from the entrance of the tunnel 10 to the exit of the tunnel 10, so as to realize all-round monitoring of the entire tunnel 10 area, timely discover abnormal conditions inside the tunnel 10, such as traffic accidents, blockages, etc., improve emergency response speed, and realize comprehensive monitoring of traffic and conditions inside the tunnel 10. The plurality of monitoring cameras 420 spaced in sequence can effectively eliminate monitoring blind spots and blind areas, avoid the situation where important areas cannot be monitored, and improve the comprehensiveness and accuracy of monitoring.

[0052] The first monitoring camera 420 among the plurality of monitoring cameras 420 may be located in the tunnel 10 or at the entrance of the tunnel 10. The last monitoring camera 420 among the plurality of monitoring cameras 420 may be located in the tunnel 10 or at the exit of the tunnel 10.

[0053] In one embodiment, the interval between two adjacent monitoring cameras 420 is 100m to 200m. The monitoring cameras 420 spaced 100m to 200m apart can ensure the continuity of monitoring data, and through the overlapping areas between the monitoring cameras 420, the driving state of the vehicle can be captured by multiple cameras, thereby reducing the possibility of data loss.

[0054] In one embodiment, one of the monitoring cameras 420 is installed next to the first traffic safety gantry 110 to ensure that the vehicle passing through the laser radar 120 is photographed by the monitoring camera 420. Therefore, when the vehicle passes through the first traffic safety gantry 110, the laser radar 120 obtains the vehicle's outline, speed, and lane position, the license plate recognition camera 130 obtains the license plate information, and the monitoring camera 420 obtains the vehicle's color, passengers and other information, thereby increasing the dimension of vehicle data and improving the safety of the tunnel 10.

[0055] In one of the embodiments, the highway tunnel monitoring equipment also includes a base station 140, the base station 140 is installed on the first traffic safety gantry 110, and the laser radar 120 and the license plate recognition camera 130 are electrically connected to the base station 140 respectively. The electrical connection of the laser radar 120 and the license plate recognition camera 130 with the base station 140 can achieve fast and stable data transmission, ensure the accuracy and timeliness of the monitoring data, and facilitate external communication. After connecting to the base station 140, remote monitoring of the laser radar 120 and the license plate recognition camera 130 can be achieved, which is convenient for monitoring personnel to discover problems and deal with them in time. The connection of the base station 140 is also conducive to integrating the data collected by different monitoring equipment, realizing more comprehensive information analysis and comprehensive application, and improving the intelligence level of the monitoring equipment.

[0056] In addition, the base station 140 is also electrically connected to the inlet RSU antenna 220 and the outlet RSU antenna 310. The base station 140 is also electrically connected to the tunnel RSU antenna 410 and the surveillance camera 420.

[0057] In some embodiments, in combination Figure 1 and Figure 4 The highway tunnel monitoring device further includes a plurality of emergency telephone devices 430 located in the tunnel 10, and the plurality of emergency telephone devices 430 are sequentially spaced from the entrance of the tunnel 10 to the exit of the tunnel 10. The distribution of the emergency telephone devices 430 can provide rapid rescue support in emergency situations. If a traffic accident or other emergency occurs, passengers in the vehicle can use the emergency telephone to call relevant rescue agencies to obtain timely rescue and help.

[0058] Specifically, the interval between two adjacent emergency telephone devices 430 is 150m to 300m.

[0059] In some embodiments, in combination Figure 1 and Figure 2 The second traffic security gantry 210 is installed next to the entrance toll station 440. On the one hand, the entrance RSU antenna 220 installed on the second traffic security gantry 210 can obtain the time and location of the vehicle entering the toll highway at the entrance toll station 440, which is beneficial to the calculation of the vehicle's highway toll. On the other hand, it is also used to inform the laser radar 120 to prepare to measure the speed of the vehicle passing through the entrance toll station 440 and obtain vehicle information, thus saving the number of entrance RSU antennas 220.

[0060] In some embodiments, in combination Figure 1 and Figure 2 The highway tunnel monitoring device further includes a fourth traffic security gantry 460 and a first auxiliary RSU antenna 470. The fourth traffic security gantry 460 is located between the first traffic security gantry 110 and the entrance toll station 440. The first auxiliary RSU antenna 470 is installed on the fourth traffic security gantry 460. The first auxiliary RSU antenna 470 is used to obtain the time when the vehicle passes through the fourth traffic security gantry 460, which is conducive to improving the positioning of the vehicle at the fourth traffic security gantry 460, and further conducive to inferring the trajectory of the vehicle between the entrance toll station 440 and the first traffic security gantry 110.

[0061] In some embodiments, in combination Figure 1 and Figure 2 The highway tunnel monitoring device further includes a second auxiliary RSU antenna 480, which is located on a side of the entrance toll station 440 away from the second traffic security gate 210. The second auxiliary RSU antenna 480 obtains the position of the vehicle when it is about to enter the entrance toll station 440, which is conducive to obtaining the trajectory of the vehicle at the entrance toll station 440.

[0062] In some embodiments, in combination Figure 1 and Figure 3 The exit RSU antenna 310 is located next to the exit toll station 450. On the one hand, the exit RSU antenna 310 can obtain the time and location of the vehicle leaving the toll highway at the exit toll station 450, which is beneficial to the calculation of the vehicle's highway toll. On the other hand, it is also used to obtain the vehicle's departure information, which is beneficial to counting the number and type of vehicles in the tunnel 10, saving the number of exit RSU antennas 310.

[0063] In the above embodiment, the highway tunnel monitoring equipment is innovatively deployed by adding a small number of lightweight front-end equipment such as lidar 120, RSU antennas, and cameras in the tunnel 10 and the impact area, which is conducive to vehicle prediction, significantly improves the level of tunnel 10 operation safety risk prevention and control, greatly reduces major accidents and casualties, property losses, and reduces the risk probability of accidents in the tunnel 10 area by up to 10%, which can bring greater economic and social benefits.

[0064] Highway tunnel monitoring equipment uses automated means to obtain tunnel 10 operation status in a timely manner, effectively reducing the number of unconventional inspections by management departments, thereby reducing fault alarms and efficient operation and maintenance, reducing labor costs, increasing equipment usage time, and reducing the average failure rate of equipment, with significant economic benefits.

[0065] Highway tunnel monitoring equipment provides data services such as real-time vehicle data, location tracing, trajectory tracking, etc., realizes simulation services such as event process simulation services and pre-rehearsal reasoning, realizes full-area tracking of vehicle running trajectories in tunnel 10, effectively improves the ability to prevent and respond to emergencies, promptly restores normal traffic order in tunnel 10, and comprehensively improves the level of traffic safety management in tunnel 10.

[0066] 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 tunnel monitoring device, characterized in that: The highway tunnel monitoring equipment includes a first traffic security gantry, a second traffic security gantry and an exit RSU antenna. The first traffic security gantry is installed at the entrance of the tunnel. The first traffic security gantry is equipped with a laser radar and a license plate recognition camera. The laser radar and the license plate recognition camera are electrically connected. The second traffic security gantry is installed on a side of the first traffic security gantry away from the tunnel. The second traffic security gantry is equipped with an entrance RSU antenna. The exit RSU antenna is installed at the exit of the tunnel.

2. The highway tunnel monitoring device according to claim 1, characterized in that: The first traffic safety portal is also equipped with a strobe light, which is electrically connected to the laser radar and operates synchronously with the license plate recognition camera.

3. The highway tunnel monitoring device according to claim 1, characterized in that: The number of the laser radars and the license plate recognition cameras is the same as the number of lanes in the tunnel, and they correspond one to one.

4. The highway tunnel monitoring device according to claim 1, characterized in that: The number of the entrance RSU antennas is the same as the number of lanes in the tunnel and corresponds one to one.

5. The highway tunnel monitoring device according to claim 1, characterized in that: The number of the exit RSU antenna is one, and the highway tunnel monitoring device further includes an exit antenna gantry, and one of the exit RSU antennas is installed on the exit antenna gantry; Alternatively, the number of the exit RSU antennas is the same as the number of lanes in the tunnel and corresponds one to one, and the highway tunnel monitoring equipment further includes a third traffic safety gantry, and the exit RSU antenna is installed on the third traffic safety gantry.

6. The highway tunnel monitoring device according to claim 1, characterized in that: The highway tunnel monitoring equipment also includes a plurality of RSU antennas in the tunnel, and the plurality of RSU antennas in the tunnel are distributed in sequence along a direction from the entrance of the tunnel to the exit of the tunnel.

7. The highway tunnel monitoring device according to claim 6, characterized in that: The interval between the RSU antennas in two adjacent tunnels is 100m to 200m; And / or, the RSU antenna in the tunnel is installed on the side wall of the tunnel.

8. The highway tunnel monitoring device according to claim 1, characterized in that: The highway tunnel monitoring equipment further includes a plurality of monitoring cameras, which are distributed in sequence and spaced apart from each other along a direction from the entrance of the tunnel to the exit of the tunnel.

9. The highway tunnel monitoring device according to claim 8, characterized in that: The interval between two adjacent surveillance cameras is 100m to 200m; And / or, one of the surveillance cameras is installed next to the first traffic security gate.

10. The highway tunnel monitoring device according to any one of claims 1 to 9, characterized in that: The highway tunnel monitoring equipment also includes a base station, which is installed on the first traffic safety gate, and the laser radar and the license plate recognition camera are electrically connected to the base station respectively.

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