CN114333362A - Highway traffic flow detection device and flow distribution management method - Google Patents
Highway traffic flow detection device and flow distribution management method Download PDFInfo
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- CN114333362A CN114333362A CN202210183310.6A CN202210183310A CN114333362A CN 114333362 A CN114333362 A CN 114333362A CN 202210183310 A CN202210183310 A CN 202210183310A CN 114333362 A CN114333362 A CN 114333362A
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Abstract
The invention belongs to the technical field of highway traffic control, and particularly relates to a highway traffic flow detection device and a highway traffic flow distribution management method. An expressway traffic flow detection device comprising a plurality of vehicle detection stations arranged along an expressway; a designated position behind the starting point of each road section is used as a detection node, and a vehicle detection station is arranged at each detection node; the vehicle detection station comprises a door-shaped support and a camera, wherein the direction of the camera and the direction of a vehicle speed detector are vertical downward, and the camera and the direction of the vehicle speed detector are used for counting the number of vehicles in each lane in the road section and collecting the speed of the vehicles passing through the detection node respectively. The number of vehicles is counted through the camera, and the portal bracket does not need to damage the road surface in the construction process; the method has three traffic flow management methods, namely a flow dredging method, a flow limiting method and a speed limiting method, and can control the matched vehicle speed and traffic flow according to actual needs, so that the balance of the transportation pressure of the expressway is ensured, and the accident rate is reduced.
Description
Technical Field
The invention belongs to the technical field of highway traffic control, and particularly relates to a highway traffic flow detection device and a highway traffic flow distribution management method.
Background
When the road pressure of the highway is controlled, the traffic flow quantity and the traffic flow speed are often required to be counted and controlled, so that the traffic flow is convenient to be subjected to shunt control according to the actual traffic conditions of the highway, and the inter-cell management of the vehicle speed quantity and the vehicle speed is difficult to realize in the conventional highway system, so that the traffic flow detection and the reasonable vehicle shunt become problems to be solved.
Disclosure of Invention
In order to solve the problem that the number of vehicles on different road sections cannot be counted in the prior art, the scheme provides a highway traffic flow detection device and a highway traffic flow division management method.
The technical scheme adopted by the invention is as follows:
an expressway traffic flow detection apparatus includes a plurality of vehicle detection stations arranged along an expressway; dividing the highway into a plurality of continuous road sections according to the characteristics of the road, wherein the end point of each road section is used as the starting point of the next road section; a designated position behind the starting point of each road section is used as a detection node, and a vehicle detection station is arranged at each detection node; this vehicle detection station is including door type support and camera, door type support spanes the one-way whole lane of highway, and the camera sets up on door type support, all corresponds directly over every lane and sets up a camera and speed of a motor vehicle detector, and the equal vertical downward of direction of camera and speed of a motor vehicle detector to be used for the vehicle quantity of statistics each lane in this highway section respectively and gather the vehicle speed through this detection node.
Optionally: the road characteristics include tunnels, bridges, number of lanes, curves, uphill slopes, or downhill slopes.
Optionally: the door-shaped bracket is also provided with an LED display panel and a station manager; an LED display panel is arranged above each lane and used for prompting speed limit; each LED display panel is in communication connection with the site manager; the station managers at all the vehicle detection stations are in communication connection with a cloud server; the cloud server collects the number of vehicles in all road sections and compares the number of vehicles in adjacent road sections; when the number of vehicles in a certain road section continuously increases and exceeds a threshold value or specified time, the cloud server controls one or more vehicle detection stations in front of the road section to change speed limit prompts.
Optionally: the door-shaped bracket is also provided with projection equipment, and the projection equipment points vertically downwards and is used for projecting speed bumps and driving direction prompts; when the speed limit prompt changed by the vehicle detection station is smaller than the standard speed limit, the projection equipment projects the deceleration strip; the projection device projects a diversion indication arrow when a diversion of a vehicle from a highway exit of a highway lane is required.
Optionally: the door-shaped support is also provided with an environment detector, the environment detector comprises a raindrop sensor, a light intensity sensor and a wind speed and direction sensor, and the raindrop sensor, the light intensity sensor and the wind speed and direction sensor are electrically connected with the site manager; a database is arranged in the cloud server, a road surface friction model, a visibility model and a natural wind influence model of each vehicle detection station are stored in the database, the raindrop sensor is used for detecting rainfall conditions to match the road surface friction model, the light intensity sensor is used for detecting illumination intensity to match the visibility model, and the wind speed and direction sensor is used for detecting wind speed and wind direction to match the natural wind influence model; and the cloud server changes the speed limit prompt of each road section according to the road surface friction model, the visibility model and the natural wind influence model.
Optionally: the flow dividing management method comprises a flow limiting method, and the flow limiting method comprises the following steps: step 1: the cloud server marks the road sections, the number of vehicles of which continuously increases and exceeds a threshold value or specified time, as pre-congestion road sections; step 2: the cloud server counts pre-jammed road sections between adjacent high-speed entrances of the highway lane, and performs scheduling control on the number of the channels of the toll station at the high-speed entrance according to the number of the pre-jammed road sections.
Optionally: the flow dividing management method also comprises a flow dividing method, and the flow dividing method comprises the following steps: step 1: the cloud server counts pre-blocked road sections between adjacent high-speed exits of the highway lane; step 2: and scheduling and controlling the number of channels of the toll station at the high-speed exit in front of the pre-blocked road section according to the number of the pre-blocked road section, and controlling a plurality of vehicle detection stations adjacent to the high-speed exit to project shunting indication arrows.
Optionally: a fence device for forced diversion is arranged at a highway exit of the highway, and comprises a plurality of branch tracks, a track switcher, a main track and a fence main body; the orbital one end of a plurality of branch roads is abreast, on the other end extends to the lane of difference respectively, the breast board main part sets up on the main track, the track switch sets up between main track and branch road track, is provided with a plurality of middle tracks on the track switch, middle track and branch road track one-to-one, and the main track can communicate different branch road tracks through the middle track of difference to on guiding the breast board main part to different branch road tracks.
Optionally: the track switcher is connected with a rack which is engaged and matched with a control gear, and the control gear is manually or electrically controlled to communicate the main track to different branch tracks.
Optionally: the fence board comprises a main rail, a plurality of fence board main bodies and a plurality of guide wheels, wherein the lower part of each fence board main body is provided with a plurality of vertical rods which are arranged at equal intervals; a first breast board pushing wheel and a second breast board pushing wheel are further arranged on two sides of the main track, and semicircular grooves are formed in the outer edges of the first breast board pushing wheel and the second breast board pushing wheel; the semicircular groove is meshed with the vertical rod and can push the breast board main body to move.
The invention has the beneficial effects that: according to the scheme, the highway is segmented according to the characteristics of the road sections, so that the vehicle speed and the vehicle quantity are conveniently restrained, controlled and scheduled according to the characteristics of the actual road, and the road pressure is further conveniently improved; according to the scheme, the number of vehicles is counted by arranging the vertically downward camera, and the door-shaped support is adopted for supporting, so that the road surface is not required to be damaged in the construction process, the application cost can be reduced, and the use of a highway is not influenced by the installation of the camera; after the vehicle quantity is detected, three traffic flow management methods, namely a flow dredging method, a flow limiting method and a speed limiting method, are provided, and the matched vehicle speed and traffic flow can be controlled according to actual needs, so that the balance of the transportation pressure of the expressway is ensured, and the accident rate is reduced.
Drawings
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 is a fragmented exemplary diagram of a highway;
FIG. 2 is a sectional view of a highway with a traffic flow detection device and a balustrade device;
FIG. 3 is a state diagram of a highway collocated vehicle detection station;
fig. 4 is a communication relationship diagram of the traffic flow detection device and the cloud server;
FIG. 5 is a block diagram of the mating of the bypass track, track switch and main track;
FIG. 6 is a block diagram of the fence body.
Description of the drawings: 1-a highway lane; 101-a high-speed outlet; 102-a high speed inlet; 2-a vehicle inspection station; 201-site manager; 202-an environment detector; 203-a camera; 204-LED display panel; 205-a projection device; 3-a balustrade device; 301-first branch track; 302-a second branch track; 303-third branch track; 304-a rack; 305-a control gear; 306-a first breast board push wheel; 307-a second breast board push wheel; 308-a main track; 309-a guide wheel; 310-a breast board body; 311-a reflector; 312-vertical rod; 313-track switcher; 314-rubber force transfer belt; 4-cloud server.
Example 1
As shown in fig. 1 to 4, the present embodiment is directed to a highway traffic flow detection apparatus including a plurality of vehicle detection stations 2 arranged along a highway. The boundaries between the different highway lanes in fig. 1-3 are indicated by dashed lines, while the solid lines in fig. 1-3 represent isolated solid lines or traffic boundaries of the highway and the arrows represent traffic directions.
The highway is divided into a plurality of continuous road sections according to road characteristics, k (1) -k (n), wherein the road characteristics comprise tunnels, bridges, the number of lanes, curves, uphill slopes or downhill slopes, and the end point of a road section is used as the starting point of the next road section. Since the speed of the same vehicle on the same road section with the same characteristics on the highroad is always the same on the road section, the speed detection can be carried out within the range of 300m-500m behind the road characteristics, so that the measured speed can be used for representing the running speed of the vehicle on the road section.
A designated position behind the starting point of each road section is used as a detection node, and a vehicle detection station 2 is arranged at each detection node; the vehicle inspection station 2 comprises a door-shaped bracket, a camera 203, an LED display panel 204, a station manager 201, a projection device 205 and the like. The site manager 201 may be an existing computer, server, or industrial personal computer, which mainly implements functions of receiving, storing, and forwarding data of the camera 203, and implements display control of the LED display panel 204, and on/off control of the projection device 205 or/and switching control of a projection model pre-stored in the projection device, and all existing devices capable of implementing the above functions may be regarded as the site manager 201 of the embodiment.
The door type support crosses all lanes of the highway in a single direction, the camera 203 is arranged on the door type support, the camera 203 and the vehicle speed detector are correspondingly arranged right above each lane, the directions of the camera 203 and the vehicle speed detector are all vertically downward or towards the direction of the coming vehicle or towards the direction of the leaving vehicle, and the camera 203 and the vehicle speed detector are respectively used for counting the number of vehicles in each lane in the road section and collecting the speed of the vehicles passing through the detection node. One camera 203 corresponds to the number of vehicles passing by which one lane is detected, and the vehicle speed detector can detect the vehicle speed of the vehicle. Through vertical camera 203 down, make statistics of the quantity of vehicle to the door type support of adoption supports, thereby need not to destroy the road surface in the work progress, thereby can reduce the application cost, and its installation can not influence highway's use yet.
An LED display panel 204 is arranged above each lane, and the LED display panel 204 is used for prompting speed limit; each LED display panel 204 is communicatively coupled to site manager 201; the station managers 201 at all the vehicle detection stations 2 are in communication connection with a cloud server 4; the cloud server 4 collects the number of vehicles in all road sections, and compares the number of vehicles in adjacent road sections; when the number of vehicles in a certain road section continuously increases and exceeds a threshold value or specified time, the cloud server 4 controls one or more vehicle detection stations 2 in front of the road section to change speed limit prompts. Such as: the vehicle detection station 2 of the k (4) road section detects the vehicle input amount of the k (4) road section, the detection result can be used as the output amount of the vehicle of the k (3) road section, the input amount minus the output amount of the vehicle of the k (3) road section is the vehicle quantity of the k (3) road section, when the vehicle quantity of the k (3) road section is continuously increased for a specified time or the vehicle quantity reaches a set threshold value, the cloud server 4 is used for controlling the k (2) road section in front of the k (3) road section to reduce the speed limit value, so that the vehicle quantity of the vehicle entering the k (3) road section is reduced, in addition, the speed limit value of the k (1) road section and the speed limit value of the k (2) road section can be controlled to be linked according to a set rule, and the probability that the k (2) road section is not jammed is reduced. The speed is limited by changing the speed limit value, the principle is that the speed of the non-obedient vehicles is limited by using the lanes which obey the speed limit requirement, when most vehicles run according to the speed limit value requirement, more vehicles are forced or reduced to the range of the speed limit value, and therefore the effect of managing the speed of the expressway in sections is achieved.
In addition, a projection device 205, which is arranged on the gantry and points vertically downward, is used for projecting speed bumps and driving direction prompts; when the speed limit prompt changed by the vehicle detection station 2 is smaller than the standard speed limit, the projection device 205 projects a deceleration strip mark; when the vehicle needs to perform the prompt diversion from the exit 101 of the highway lane 1, the projection device 205 may project a diversion indication arrow, so as to guide a part of the vehicle to leave the highway from the exit 101 of the highway, thereby reducing traffic pressure on the highway. The projection device 205 can be used for more clearly prompting a driver of a vehicle, so that the driver can conveniently decelerate, and the road pressure of each road section of the expressway can be balanced. Since the deceleration sign of the projection device 205 is a non-material deceleration strip, even if the vehicle is overspeed or the speed limit value is temporarily changed, the driving safety of the highway is not affected.
Example 2
As shown in fig. 1 to 4, on the basis of the structure of embodiment 1, an environment detector 202 is further disposed on the gate-type bracket, the environment detector 202 includes a raindrop sensor, a light intensity sensor and a wind speed and direction sensor, and the raindrop sensor, the light intensity sensor and the wind speed and direction sensor are electrically connected to a site manager 201.
A database is arranged in the cloud server 4, a road surface friction model, a visibility model and a natural wind influence model of each vehicle detection station 2 are stored in the database, the raindrop sensor is used for detecting rainfall conditions to match the road surface friction model, the light intensity sensor is used for detecting illumination intensity to match the visibility model, and the wind speed and direction sensor is used for detecting wind speed and direction to match the natural wind influence model; and the cloud server 4 changes the speed limit prompt of each road section according to the road surface friction model, the visibility model and the natural wind influence model. The road surface friction model, the visibility model and the natural wind influence model provide corresponding relations between the upper limit threshold value and the vehicle speed limit value of the number of vehicles in each road section and rainfall conditions, visual field visibility conditions and road crosswind conditions, and the number of the vehicles in each road section and the speed limit threshold value can be scheduled and controlled according to various environmental factors, so that unified scheduling and matching of the set threshold value in the whole course of the expressway are realized, and the influence of driving environment on driving safety is reduced. The road surface friction model is a corresponding relation curve of a road surface friction coefficient and a vehicle speed limit value, the visibility model is a corresponding relation curve of a vehicle visibility distance and a vehicle speed limit value, and the natural wind influence model is a corresponding relation curve of a wind speed and a risk and the vehicle speed limit value.
Example 3
As shown in fig. 1 to 2, based on the structure of embodiment 1, after the vehicle speed is detected at each node, the average vehicle speed s (t) of the vehicle in the road section can be calculated according to the number of vehicles in the road section, and n road sections can drive an average speed matrix of 1 × n, s (t) = (s (t),. once, s (t)), where s (t) is the average vehicle speed and s (t) is a mathematical matrix of the average vehicle speeds of a plurality of road sections.
And obtaining a vehicle number matrix in the time range from t to t +. Δ t of n road sections by using the same calculation mode: u (t, t Δ t) = (U (t, t Δ t),. U (t, t Δ t)) is expressed (t, t +. t); obtaining an emergency event information matrix within the time range from t to t +/t of n road sections: a (t, t +. Δ t) = (a (t, t +. Δ t)); obtaining an environment factor matrix within the time range from t to t +/t of n road sections: b (t, t +. Δ t) = (β (t, t +. Δ t) ·, β (t, t +. t)). In the above formula, t is the counting time; the Δ t is the sampling duration; u (t, t +. Δ t) is the average number of vehicles in a single road section sampling time; u (t, t +. Δ t) is a mathematical matrix of the average number of vehicles on a plurality of road sections; a (t, t +. Δ t) is the number of the emergency events in the sampling time; a (t, t +. Δ t) is a mathematical matrix of the number of the emergency events of a plurality of road sections; beta (t, t +. Δ t) is an environmental factor set in the sampling time of a single road section; b (t, t +. Δ t) is an arrangement matrix of the environment factor sets of the multiple road sections, and each environment factor is identified by a set code.
Thus, a vehicle speed prediction model matrix S (t +. t) = f (S) (t), u (t, t +. t), a (t, t +. t), beta (t, t +. t)) of each section of the expressway through calculation learning can be obtained, wherein S (t) is the average vehicle speed, u (t, t +. t) is the average number of vehicles in a single section sampling time, a (t, t +. t) is the number of emergent events in the sampling time, and beta (t, t +. t) is an environment factor set in the single section sampling time; f () represents the rules learned by the computer according to the historical data; s (t +. Δ t) is a mathematical model predicted by learning and analyzing big data, the speed of each road section in a future period can be predicted to a certain extent, and the number of vehicles can be predicted in the same way, so that the speed limit and the shunt of each node on the expressway are conveniently and uniformly scheduled and controlled.
Example 4
As shown in fig. 1 to 4, on the basis of the structure of embodiment 1, a flow limiting method can be used to realize flow division management, which is mainly controlled by controlling vehicles entering a highway from an expressway entrance 102, and the specific flow limiting method is as follows: step 1: the cloud server 4 marks the road sections of which the number of vehicles continuously increases and exceeds a threshold value or specified time as pre-congestion road sections; step 2: the cloud server 4 counts the pre-jammed sections between the adjacent high-speed entrances 102 of the highway lane 1, and performs scheduling control on the number of the channels of the toll stations at the high-speed entrances 102 according to the number of the pre-jammed sections. When the number of channels of the toll station is reduced, the number of vehicles entering the high-speed entrance can be reduced; and when the number of lanes at the toll booth increases, the number of vehicles entering the high-speed entrance can be increased.
Example 5
As shown in fig. 1 to 4, based on the structure of embodiment 1, the diversion management can be realized by a diversion method, which mainly branches the traffic flow through a high-speed exit 101 in front of an area with a large number of congested road sections, and the diversion method includes the following steps: step 1: the cloud server 4 counts pre-congestion road sections between adjacent high-speed exits 101 of the highway lane 1; step 2: the number of channels of the toll station at the high-speed exit 101 in front of the pre-jammed road section is scheduled and controlled according to the number of the pre-jammed road section, the plurality of vehicle detection stations 2 adjacent to the high-speed exit 101 are controlled to project shunting indication arrows, and the shunting indication arrows can be used for indicating vehicles to leave the expressway from the high-speed exit 101, so that vehicle collision accidents such as rear-end collision and the like caused by continuous increase of vehicle pressure after the pre-jammed road section is jammed are avoided.
Example 6
As shown in fig. 1 to 6, on the basis of the structure of embodiment 1, a balustrade device 3 for forced diversion is disposed at a highway exit 101, and the balustrade device 3 is disposed behind the highway exit 101, and is mainly used for closing one lane or multiple lanes of the highway, and is mainly applied to major highway accidents such as debris flow, tunnel collapse, large-area road collapse, and the like, and can realize forced diversion of the highway through control of a cloud server 4 or artificial control.
The balustrade arrangement 3 comprises a plurality of branch rails, a rail switch 313, a main rail 308 and a balustrade body 310; one ends of the branch rails are parallel, the other ends of the branch rails extend to different lanes respectively, the fence main body 310 is arranged on the main rail 308, the rail switcher 313 is arranged between the main rail 308 and the branch rails, a plurality of middle rails are arranged on the rail switcher 313, the middle rails correspond to the branch rails one to one, and the main rail 308 can be communicated with different branch rails through different middle rails so as to guide the fence main body 310 to different branch rails. A rack 304 is connected to the track switch 313, the rack 304 being engaged with a control gear 305, said control gear 305 being manually or electrically controlled to connect the main track 308 to different bypass tracks. This sideboard device 3 is accomodate outside the guardrail at high-speed exit when non-user state, and when using, only need promote the sideboard main part along appointed track move enter into specific branch road track can. And its use scene can be decided as required, for example when the condition takes place such as mountain landslide, bridge fracture, road surface collapse, can carry out the drainage through this breast board device. Because the installation of breast board device 3 needs the track of presetting on the highway of word, consequently, can use other devices to replace the breast board device, for example use current electronic flexible guardrail to replace the breast board device as the compulsory reposition of redundant personnel instrument of exit 101 department, perpendicular to highway lane is flexible when electronic flexible guardrail uses and is removed can.
A plurality of fence main bodies 310 are arranged in the main track 308, the lower part of each fence main body 310 is provided with a guide wheel 309 and a plurality of vertical rods 312 which are arranged at equal intervals, adjacent fence main bodies 310 are rotatably connected, and the guide wheel 309 is arranged in the main track 308 and is used for guiding the movement of the fence main bodies 310; a first breast board pushing wheel 306 and a second breast board pushing wheel 307 are further arranged on two sides of the main track 308, and semicircular grooves are formed in the outer edges of the first breast board pushing wheel 306 and the second breast board pushing wheel 307; the semi-circular groove engages the vertical post 312 and can push the fence body 310 to move. A light reflecting plate 311 is provided at the middle portion of the balustrade main body 310.
When forced shunting of vehicles on a slow lane is required, the track switch 313 can be driven to move by the control gear 305, so that one of the middle tracks is communicated with the main track 308 and the third branch track 303, and the first breast board pushing wheel 306 and the second breast board pushing wheel 307 can reach a position between the slow lane and the middle lane along the third branch track 303 when rotating under the control of the motor and pushing the breast board main body 310 to move, so that forced shunting of vehicles on the slow lane can be realized; when forced shunting of vehicles on the middle lane and the slow lane is needed, the control gear 305 can drive the track switch 313 to move, so that the other middle track is communicated with the main track 308 and the second branch track 302, and the first breast board pushing wheel 306 and the second breast board pushing wheel 307 can reach a position between the high-speed lane and the middle lane along the second branch track 302 when rotating under the control of the motor and pushing the breast board main body 310 to move, so that forced shunting of vehicles on the slow lane is conducted; when forced shunting of vehicles on all lanes is needed, the control gear 305 can drive the track switch 313 to move, so that the third middle track is communicated with the main track 308 and the first branch track 301, and the first breast board pushing wheel 306 and the second breast board pushing wheel 307 can reach a position between a slow lane and the middle lane along the first branch track 301 when rotating under the control of the motor and pushing the breast board main body 310 to move, so that forced shunting of vehicles on the low lane can be realized; the emergency lane is not shown in the figure, but in practical situations, in order to ensure that the rubber force transmission belt 314 with a length greater than the width of the emergency lane is connected to the breast board main body 310 at the end part, the rubber force transmission belt 314 has certain toughness along the length direction thereof, so that the breast board main body 310 can be pushed to move along the branch track, meanwhile, the rubber force transmission belt 314 spans the whole emergency lane, and the rubber force transmission belt 314 has good bending performance in the width direction, so that when a vehicle rolls the rubber force transmission belt 314, the rubber force transmission belt can be deformed in the width direction and can be attached to the road surface of the emergency lane of a highway, and the emergency traffic of the vehicle is ensured.
The foregoing examples are provided for clarity of illustration only and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a highway traffic flow detection device which characterized in that: comprising a plurality of vehicle detection stations (2) arranged along a highway; dividing the highway into a plurality of continuous road sections according to the characteristics of the road, wherein the end point of each road section is used as the starting point of the next road section; the designated position behind the starting point of each road section is used as a detection node, and a vehicle detection station (2) is arranged at each detection node; this vehicle detection station (2) is including door type support and camera (203), the door type support crosses the one-way whole lane of highway, and camera (203) set up on the door type support, all corresponds directly over every lane and sets up a camera (203) and speed detector, and the equal vertical downward of pointing of camera (203) and speed detector to be used for counting the vehicle quantity in each lane and gathering the vehicle speed through this detection node in this highway section respectively.
2. The highway traffic flow detecting device according to claim 1, wherein: the road characteristics include tunnels, bridges, number of lanes, curves, uphill slopes, or downhill slopes.
3. The highway traffic flow detecting device according to claim 1, wherein: the door-shaped support is also provided with an LED display panel (204) and a station manager (201); an LED display panel (204) is arranged above each lane, and the LED display panel (204) is used for prompting speed limit; each LED display panel (204) is in communication connection with the site manager (201); the station managers (201) at all the vehicle detection stations (2) are in common communication connection with a cloud server (4); the cloud server (4) collects the number of vehicles in all road sections and compares the number of vehicles in adjacent road sections; when the number of vehicles in a certain road section continuously increases and exceeds a threshold value or specified time, the cloud server (4) controls one or more vehicle detection stations (2) in front of the road section to change speed limit prompts.
4. The highway traffic flow detecting device according to claim 3, wherein: the door-shaped bracket is also provided with a projection device (205), and the projection device (205) points vertically downwards and is used for projecting a speed bump and a driving direction prompt; when the speed limit prompt changed by the vehicle detection station (2) is smaller than the standard speed limit, the projection equipment (205) projects a deceleration strip; the projection device (205) projects a diversion indication arrow when a diversion of a vehicle from a highway exit (101) of a highway lane (1) is required.
5. The highway traffic flow detecting device according to claim 4, wherein: the door-shaped support is also provided with an environment detector (202), the environment detector (202) comprises a raindrop sensor, a light intensity sensor and a wind speed and direction sensor, and the raindrop sensor, the light intensity sensor and the wind speed and direction sensor are electrically connected with the site manager (201); a database is arranged in the cloud server (4), a road surface friction model, a visibility model and a natural wind influence model of each vehicle detection station (2) are stored in the database, the raindrop sensor is used for detecting rainfall conditions to match the road surface friction model, the light intensity sensor is used for detecting illumination intensity to match the visibility model, and the wind speed and direction sensor is used for detecting wind speed and wind direction to match the natural wind influence model; and the cloud server (4) changes the speed limit value of each road section according to the road surface friction model, the visibility model and the natural wind influence model.
6. The method for dividing management of the highway traffic flow detecting device according to any one of claims 1-5, wherein: comprising a current limiting method comprising the steps of: step 1: the cloud server (4) marks the road sections of which the number of vehicles continuously increases and exceeds a threshold value or specified time as pre-congestion road sections; step 2: the cloud server (4) counts pre-jammed road sections between adjacent high-speed entrances (102) of the highway lane (1), and performs scheduling control on the number of the toll stations at the high-speed entrances (102) according to the number of the pre-jammed road sections.
7. The shunt management method of claim 6, wherein: the flow dividing management method also comprises a flow dividing method, and the flow dividing method comprises the following steps: step 1: the cloud server (4) counts pre-congestion road sections between adjacent high-speed outlets (101) of the highway lane (1); step 2: and carrying out scheduling control on the number of channels of a toll station at a high-speed exit (101) in front of the pre-congested road section according to the number of the pre-congested road section, and controlling a plurality of vehicle detection stations (2) adjacent to the high-speed exit (101) to project a diversion indication arrow.
8. The shunt management method of claim 7, wherein: the flow dividing management method also comprises a forced flow dividing method, wherein a baffle plate device (3) for forced flow dividing is arranged at a high-speed outlet (101) of the expressway; the sideboard device (3) comprises a plurality of branch rails, a rail switcher (313), a main rail (308) and a sideboard main body (310); one end of each branch road track is parallel to each other, the other end of each branch road track extends to different lanes, the breast board main body (310) is arranged on the main track (308), the track switcher (313) is arranged between the main track (308) and the branch road tracks, a plurality of middle tracks are arranged on the track switcher (313), the middle tracks correspond to the branch road tracks one to one, and the main track (308) can be communicated with different branch road tracks through different middle tracks so as to guide the breast board main body (310) to different branch road tracks.
9. The shunt management method of claim 8, wherein: the track switcher (313) is connected with a rack (304), the rack (304) is meshed with a control gear (305), and the control gear (305) is manually or electrically controlled to connect the main track (308) to different branch tracks.
10. The shunt management method of claim 8, wherein: a plurality of fence main bodies (310) are arranged in the main track (308), the lower part of each fence main body (310) is provided with a guide wheel (309) and a plurality of vertical rods (312) which are arranged at equal intervals, adjacent fence main bodies (310) are rotatably connected, and the guide wheel (309) is arranged in the main track (308) and used for guiding the movement of the fence main bodies (310); a first breast board pushing wheel (306) and a second breast board pushing wheel (307) are further arranged on two sides of the main track (308), and semicircular grooves are formed in the outer edges of the first breast board pushing wheel (306) and the second breast board pushing wheel (307); the semicircular groove is meshed with the vertical rod (312) and can push the fence main body (310) to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210183310.6A CN114333362B (en) | 2022-02-28 | 2022-02-28 | Highway traffic flow detection device and flow distribution management method |
Applications Claiming Priority (1)
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| CN113192327A (en) * | 2021-04-23 | 2021-07-30 | 长安大学 | Road operation risk active prevention and control system and method considering traffic flow and individuals |
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