A real-time joint control method and system for road traffic information

Abstract

The application discloses a kind of road traffic information real-time joint control method and system, comprising the following steps obtaining the length of each section;Vehicle average length is set;The total number of vehicles accommodated in target section is obtained, according to the length of section and vehicle average length, the total number of vehicles that can be accommodated in target section is obtained;The actual number of vehicles accommodated in target section is obtained;Section can accommodate number judgment;Through the camera of entrance and exit, the remaining vehicles in the section are monitored, so that the number of vehicles that can be accommodated in the section is obtained, then the system of each intersection will be through interactive information, vehicle distribution is carried out through processor cooperation, can combine the actual information of each section, vehicle is commanded to enter the next section with planning, at the same time, before the next section is full, the original direction display is switched to the text display with clear vehicle passing information.

Description

Technical Field

[0001] This invention belongs to the field of road traffic, specifically relating to a method and system for real-time control of road traffic information. Background Technology

[0002] Road traffic refers to the orderly movement of vehicles on roads through the coordination of traffic lights or traffic police and other relevant personnel.

[0003] The existing road network is extensive and generally relies on traffic lights for traffic control. Since traffic lights change at fixed times without police intervention, when traffic lights are used at two-way single-lane intersections, and the target road segment is too short, and the traffic flow from other road segments into the target road segment is too large, it is very easy to cause traffic jams at four-way intersections. At this time, traffic police need to coordinate and disperse the vehicles stuck at the intersection, which greatly increases the workload of traffic police and other related personnel.

[0004] To address these issues, the present invention provides a real-time road traffic information control system and display device. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for real-time control of road traffic information to reduce traffic congestion at intersections.

[0006] The objective of this invention is achieved through the following technical means: a real-time road traffic information control method, comprising the following steps:

[0007] S1. Obtain the length of each road segment;

[0008] S2. Set the average length of the vehicle;

[0009] S3. Obtain the total number of vehicles that the target road segment can accommodate. Based on the road segment length and the average vehicle length, obtain the total number of vehicles that the target road segment can accommodate.

[0010] S4. Obtain the actual remaining number of vehicles in the target road segment. Based on the number of vehicles entering the target road segment from the entrance camera at the entrance of the target road segment, subtract the number of vehicles leaving the target road segment from the number of vehicles leaving the target road segment from the exit camera at the exit of the target road segment to obtain the actual number of vehicles in the target road segment. Then, based on the total number of vehicles that the target road segment can accommodate, obtain the actual remaining number of vehicles in the target road segment.

[0011] S5. Determine the number of vehicles that can be accommodated in a road segment. Determine whether the actual number of vehicles that can be accommodated in the target road segment exceeds half of the total number of vehicles that can be accommodated in the road segment. If it is greater than or equal to half, then you can enter the road segment and enter other road segments of the target road segment. The exit direction intersection display will show that you can pass. If it is less than half, then the exit direction intersection display of the road segment will show the number of vehicles that can enter. The number of vehicles that can enter is the actual number of vehicles that can be accommodated in the target road segment.

[0012] S6. Repeat steps S4 to S5 to update the capacity of the target road segment in real time, thereby updating the content displayed on the intersection display of the entry road segment until the target road segment is closed to entry and the intersection display of the exit direction of the entry road segment shows that it is not allowed to pass.

[0013] When multiple entry segments can all enter the target segment, each entry segment will receive its own actual number of vehicles and total capacity. When the actual number of vehicles in each entry segment is less than half of its total capacity, if the actual remaining capacity of the target segment is greater than the sum of the actual number of vehicles in multiple entry segments, the exit direction display of each entry segment will show that it is passable.

[0014] If the actual remaining capacity of the target road segment is less than the sum of the actual number of vehicles in multiple entry road segments, then the number of vehicles that can enter displayed on the exit direction intersection display of each entry road segment shall be half of the actual remaining capacity of the target road segment.

[0015] Except where the actual number of vehicles entering each road segment is less than half of the total capacity of each segment, the exit direction display of each current entry segment shows the number of vehicles that can enter. In this case, the number of vehicles that can enter each entry segment is the actual remaining capacity of the target segment × the actual number of vehicles in the current entry segment ÷ the sum of the actual number of vehicles in multiple entry segments.

[0016] The intersection display includes directional information and text information. The directional information includes going straight, turning left, and turning right, while the text information displays the number of vehicles that can enter.

[0017] Direction and text display are in red or green.

[0018] The text displayed reads: "X vehicles are allowed to pass, where X is the number of vehicles that can enter."

[0019] When the actual number of vehicles entering each road segment is less than half of the total capacity of each segment, if the actual remaining capacity of the target road segment is greater than the sum of the actual number of vehicles entering multiple road segments, then the exit direction display of each road segment will show the number of vehicles that can enter, which is 99.

[0020] A real-time road traffic information control system includes:

[0021] The entrance camera, installed on the gantry at the entrance of the road segment, is used to detect the number of vehicles entering the road segment; the exit camera, installed on the gantry at the exit of the road segment, is used to detect the number of vehicles leaving the road segment.

[0022] Intersection displays are installed on gantries at the entrance and exit of road sections to show whether passage is permitted, the direction of passage, and the number of vehicles that can pass.

[0023] The sub-processor has an internal GPS positioning system and is installed on the gantry at the entrance and exit of the road segment. It obtains the length of the road segment based on the GPS at the entrance and exit of the road segment, and sets the average length of the vehicle after the entrance camera detects the vehicle entering the road segment.

[0024] The main processor acquires and controls the content displayed on the intersection display based on the length of each road segment, the average length of vehicles, the total number of vehicles that each road segment can accommodate, the actual remaining number of vehicles that each road segment can accommodate, and the actual number of vehicles in each road segment.

[0025] The intersection display has three screens, which respectively display the number of vehicles turning left and vehicles that can turn left, the number of vehicles going straight and vehicles that can go straight, and the number of vehicles turning right and vehicles that can turn right.

[0026] There are three cameras at the entrance and three at the exit, used to detect the number of vehicles turning left, going straight, and turning right, respectively.

[0027] The beneficial effects of this invention are as follows: By monitoring the remaining vehicles in a road segment through cameras at the entrance and exit, the remaining capacity of the road segment can be determined. Subsequently, the systems at each intersection will allocate vehicles through interactive information and the processor will cooperate to allocate vehicles. By combining the actual information of each road segment, vehicles can be directed to the next road segment in a planned manner. At the same time, before the next road segment is full, the original directional display will be switched to a text display with clear vehicle passage information. On the one hand, this can remind drivers to avoid the traditional phenomenon of running red lights. On the other hand, it can prevent the next road segment from being filled with vehicles, which would cause traffic jams at the intersection. This greatly reduces intersection congestion, reduces the workload of traffic police and other related personnel, and also reduces the occurrence of traffic accidents. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the process of the present invention;

[0029] Figure 2 This is a schematic diagram of the actual road surface;

[0030] Figure 3 This is a schematic diagram of the structure of a real-time road traffic information control system.

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0032]

Example 1

[0033] like Figure 1 As shown, a method for real-time joint control of road traffic information includes the following steps:

[0034] S1. Obtain the length of each road segment;

[0035] S2. Set the average length of the vehicle;

[0036] S3. Obtain the total number of vehicles that the target road segment can accommodate. Based on the road segment length and the average vehicle length, obtain the total number of vehicles that the target road segment can accommodate.

[0037] S4. Obtain the actual remaining number of vehicles in the target road segment. Based on the number of vehicles entering the target road segment from the entrance camera at the entrance of the target road segment, subtract the number of vehicles leaving the target road segment from the number of vehicles leaving the target road segment from the exit camera at the exit of the target road segment to obtain the actual number of vehicles in the target road segment. Then, based on the total number of vehicles that the target road segment can accommodate, obtain the actual remaining number of vehicles in the target road segment.

[0038] S5. Determine the number of vehicles that can be accommodated in a road segment. Determine whether the actual number of vehicles that can be accommodated in the target road segment exceeds half of the total number of vehicles that can be accommodated in the road segment. If it is greater than or equal to half, then you can enter the road segment and enter other road segments of the target road segment. The exit direction intersection display will show that you can pass. If it is less than half, then the exit direction intersection display of the road segment will show the number of vehicles that can enter. The number of vehicles that can enter is the actual number of vehicles that can be accommodated in the target road segment.

[0039] S6. Repeat steps S4 to S5 to update the capacity of the target road segment in real time, thereby updating the content displayed on the intersection display of the entry road segment until the target road segment is closed to entry and the intersection display of the exit direction of the entry road segment shows that it is not allowed to pass.

[0040] The intersection display screen that exiting vehicles see can be set at the exit end of this road segment or at the entry end of the opposite road segment.

[0041] For example, if a vehicle exits from entrance B2, the display that the vehicle sees can be set at the B2 end, or a display facing the B section can be set at the D2 end, both of which can guide vehicles exiting from the B2 end.

[0042] The total length of the current road segment can be obtained by setting GPS positioning on the gantries at both the exit and entrance ends of the road segment. Then, by setting the average vehicle length, the number of vehicles that the current road segment can accommodate can be estimated.

[0043] The average length of the vehicles can be given a fixed value directly, or the length of each vehicle that has entered can be obtained from the entrance camera, and the average value can be used as the length of the vehicles that are about to enter, so as to obtain the predicted average length of the vehicles.

[0044] like Figure 2 As shown, GPS modules are installed inside locations A1, A2, B1, B2, C1, C2, D1, and D2 to locate the actual length and position of road segments A, B, C, and D.

[0045] By measuring the total number of vehicles that entered the road segment using the cameras at the entrance, and subtracting the number of vehicles that left at the exit, we can determine the number of vehicles remaining in the road segment and the maximum capacity of that road segment.

[0046] like Figure 2 As shown, point A2 is the exit point for vehicles on section A, and point A1 is the entry point for vehicles on section A.

[0047] B2 is the exit point for vehicles on section B, and B1 is the entry point for vehicles on section B.

[0048] C2 is the exit point for vehicles on section C, and C1 is the entry point for vehicles on section C.

[0049] D2 is the entry point for vehicles on section D, and D1 is the exit point for vehicles on section D.

[0050] Taking section D as the target section as an example, when going straight, section B is the entry section.

[0051] First, obtain the total number of vehicles that can be accommodated in section B and the actual number of vehicles that can be accommodated. If the actual number of vehicles that can be accommodated is greater than or equal to half of the total number of vehicles that can be accommodated, it means that there are enough spaces in section D, and the green light will be displayed at point B2 so that you can go straight.

[0052] If it is less than half, it means that there are not enough spaces in section D. The number of vehicles that can enter will be displayed in green at point B2. The number of vehicles that can enter at this time is the actual number of vehicles that section D can still accommodate.

[0053] The above steps are then repeated. Based on the number of vehicles entering and leaving section D, the actual remaining capacity of section D is updated in real time, thus changing the display at B2. For example, if more vehicles enter section D, the light changes from green to green indicating the number of vehicles that can enter. Then, the number of vehicles that can enter gradually decreases as more vehicles enter, clearly indicating how many more vehicles can pass. Alternatively, if the number of vehicles entering D2 is less than the number leaving D1, the number of vehicles that can enter displayed at B2 increases, and it may even become a green light for straight-ahead traffic. This continues until the light at B2 turns red, prohibiting passage.

[0054]

Example 2

[0055] Based on Example 1, it is possible that multiple vehicles entering a road segment may need to enter the target road segment.

[0056] by Figure 2 For example, if you turn left from section A into section D, or turn right from section C into section D, both sections A and C are now considered entry points. At this stage, going straight is prohibited at point B2 due to a red light; therefore, section B is no longer considered an entry point.

[0057] When multiple entry segments can all enter the target segment, each entry segment will receive its own actual number of vehicles and total capacity. When the actual number of vehicles in each entry segment is less than half of its total capacity, if the actual remaining capacity of the target segment is greater than the sum of the actual number of vehicles in multiple entry segments, the exit direction display of each entry segment will show that it is passable.

[0058] If the actual remaining capacity of the target road segment is less than the sum of the actual number of vehicles in multiple entry road segments, then the number of vehicles that can enter displayed on the exit direction intersection display of each entry road segment shall be half of the actual remaining capacity of the target road segment.

[0059] Except where the actual number of vehicles entering each road segment is less than half of the total capacity of that segment, the exit display at each current entry segment shows the number of vehicles that can enter. In this case, the number of vehicles that can enter each entry segment is calculated as: the actual remaining capacity of the target segment × the actual number of vehicles in the current entry segment ÷ the sum of the actual number of vehicles in all entry segments. In other words, the number of vehicles that can enter the current road segment is allocated based on the proportion of actual vehicles on the current road segment to the total number of actual vehicles in all entry segments.

[0060] The overall degree S of the road segment can be quickly calculated using GPS modules at both ends of the road segment;

[0061] The system collects data on the number of vehicles entering a road segment using cameras at the vehicle entry point.

[0062] The system collects data on the number of vehicles that leave a road segment using cameras at the exit point of the road.

[0063] Set the length N of the road segment occupied by the vehicle.

[0064] Input the actual lengths of road segments A, C, and D, then set the average length N of the road segment occupied by the vehicle, and set the red and green constant light times for the intersection display.

[0065] Divide S by N to get the actual number of vehicles M1 that road section A can accommodate;

[0066] Divide S by N to get the actual number of vehicles M2 that section C can accommodate;

[0067] Divide S by N to get the actual number of vehicles M3 that section D can accommodate.

[0068] When only section B enters, the total capacity of section D is M3 vehicles. Initially, the number of vehicles is obtained by the camera at monitoring point D2 and the number of vehicles is obtained by the camera at monitoring point D1. The number of vehicles X in section D is obtained by subtracting the number of vehicles from the number of vehicles from the number of vehicles. Then, M3 is subtracted from X to obtain the remaining capacity X1 of section D. Next, X1 is compared with 1 / 2M3. If X1 ≥ 1 / 2M3, the display system at B2 uses LED directional indicator lights. If X1 < 1 / 2M3, the display system at B2 uses LED text indicator lights.

[0069] When entering from sections A and C,

[0070] The number of vehicles is obtained by the camera at monitoring group A1 and the number of vehicles is obtained by the camera at monitoring group A2. The number of vehicles Y in section A is obtained by subtracting the number of vehicles from the number of vehicles from the number of vehicles from the number of vehicles. Then, Y is subtracted from M1 to obtain the remaining number of vehicles Y1 in section D.

[0071] The number of vehicles is obtained by the camera at monitoring group C1 and the number of vehicles is obtained by the camera at monitoring group C2. The number of vehicles Z in the current C section is obtained by subtracting the number of vehicles from the number of vehicles from the number of vehicles from the number of vehicles. Then, Z is subtracted from M2 to obtain the remaining number of vehicles Z1 that the C section can accommodate.

[0072] Y1 is equivalent to the vehicle allocation reference standard for other road sections entering road section A, Z1 is equivalent to the vehicle allocation reference standard for other road sections entering road section C, and so on. By installing the joint control system of this invention in each road section, the road joint control system of the entire area can be realized, thereby avoiding traffic jams at intersections.

[0073] Next, compare Y with 1 / 2M1 and Z with 1 / 2M2. Based on the comparison results, allocate vehicles allowed to pass through point A2 (marked with a "□") and the remaining vehicles allowed to pass through point C2 (marked with a "□") according to the proportions, as shown in Table 1.

[0074]

[0075]

[0076] The intersection display includes directional and text displays. The directional display includes straight, left turn, and right turn, and the text display shows the number of vehicles allowed to enter. The directional display includes arrow icons for straight, left turn, and right turn, and the text displays "□ vehicles allowed to pass." Only one of the text and direction can be displayed at a time, and a green icon or text indicates that passage is permitted, while a red icon indicates that passage is prohibited.

[0077] Direction and text display are in red or green.

[0078] The text displayed indicates that X vehicles are allowed to pass, where X represents the number of vehicles that can enter. Specifically, it states that □ vehicles are allowed to pass, with the number of vehicles that can enter being indicated within the □.

[0079] When the actual number of vehicles entering each segment is less than half of the total capacity of that segment, if the actual remaining capacity of the target segment is greater than the sum of the actual number of vehicles entering from all segments, then the exit display at each segment will show the number of vehicles that can enter, which will be 99. In other words, if the target segment can accommodate all vehicles from multiple segments, it can display 99 or directly show a green light to allow vehicles to freely enter the target segment.

[0080]

Example 3

[0081] like Figure 3 As shown, a real-time road traffic information control system includes:

[0082] The entrance camera is installed on the gantry at the entrance of the road section to detect the number of vehicles entering the road section;

[0083] Exit cameras, installed on gantry cranes at the exit of a road segment, are used to detect the number of vehicles leaving the segment.

[0084] Intersection displays are installed on gantries at the entrance and exit of road sections to show whether passage is permitted, the direction of passage, and the number of vehicles that can pass.

[0085] The sub-processor has an internal GPS positioning system and is installed on the gantry at the entrance and exit of the road segment. It obtains the length of the road segment based on the GPS at the entrance and exit of the road segment, and sets the average length of the vehicle after the entrance camera detects the vehicle entering the road segment.

[0086] The main processor acquires and controls the content displayed on the intersection display based on the length of each road segment, the average length of vehicles, the total number of vehicles that each road segment can accommodate, the actual remaining number of vehicles that each road segment can accommodate, and the actual number of vehicles in each road segment.

[0087] The intersection display has three screens, which respectively display the number of vehicles turning left and vehicles that can turn left, the number of vehicles going straight and vehicles that can go straight, and the number of vehicles turning right and vehicles that can turn right.

[0088] There are three cameras at the entrance and three at the exit, used to detect the number of vehicles turning left, going straight, and turning right, respectively.

[0089] There are three cameras at both the entrance and exit, used to detect the number of vehicles entering or exiting by turning left, going straight, and turning right, respectively, to determine the total number of vehicles on the road segment.

[0090] The intersection display has three screens, corresponding to left turn, straight ahead, and right turn respectively. Each screen simultaneously displays either an arrow icon or the text "□ vehicles remain to be allowed to pass".

[0091] The sub-processor obtains the road segment length via GPS positioning and sets an average length for vehicles after the entrance camera detects a vehicle entering the road segment. The sub-processor can be placed inside a control box, which is mounted on the side of the gantry.

[0092] The entrance camera, exit camera, and intersection display are all connected to the sub-processor via electrical signals. The sub-processor is connected to the main processor via wired connection or remote means such as a signal transceiver, and data is transmitted directly between the main processor and the sub-processor.

[0093] The main processor determines the duration of red and green lights on the intersection displays of each road segment based on the data collected by each subprocessor, including road segment length, average vehicle length, and number of vehicles within the road segment. It also displays arrow icons to indicate passage or shows the remaining number of vehicles allowed to pass.

[0094] During normal road traffic, the number of vehicles entering the road segment can be obtained through the monitoring system at the vehicle entry end of the road segment, and the number of vehicles leaving the road segment can be obtained through the monitoring system at the vehicle exit end of the road segment, so as to calculate how many vehicles the road segment can still accommodate.

[0095] Afterwards, the systems at each intersection will exchange information through signal transceivers. With the help of the processor and the vehicle allocation system, the system can combine the actual information of each road segment to guide vehicles into the next road segment in a planned manner. At the same time, before the next road segment is full, the original LED directional indicator lights will be switched to LED text indicator lights with clear vehicle passage information. This can remind drivers to avoid the traditional phenomenon of running red lights, and it can also prevent the next road segment from being filled with vehicles, which would cause traffic jams at the intersection. This greatly reduces intersection congestion, reduces the workload of traffic police and other related personnel, and can also reduce the occurrence of traffic accidents.

Claims

1. A method for real-time joint control of road traffic information, characterized in that: Includes the following steps: S1. Obtain the length of each road segment; S2. Set the average vehicle length. The average vehicle length is a set value or the average length of each vehicle that has entered the target road segment. S3. Obtain the total number of vehicles that the target road segment can accommodate. Based on the road segment length and the average vehicle length, obtain the total number of vehicles that the target road segment can accommodate. S4. Obtain the actual remaining number of vehicles in the target road segment. Based on the number of vehicles entering the target road segment from the entrance camera at the entrance of the target road segment, subtract the number of vehicles leaving the target road segment from the number of vehicles leaving the target road segment from the exit camera at the exit of the target road segment to obtain the actual number of vehicles in the target road segment. Then, based on the total number of vehicles that the target road segment can accommodate, obtain the actual remaining number of vehicles in the target road segment. S5. Determine the number of vehicles that can be accommodated in the target road segment. Determine whether the actual number of vehicles that can be accommodated in the target road segment exceeds half of the total number of vehicles that can be accommodated in the road segment. If it is greater than or equal to half, then you can enter the road segment and enter other road segments of the target road segment. The exit direction intersection display will show that you can pass. If less than half, the exit display at the road segment will show the number of vehicles that can enter, where the number of vehicles that can enter is the actual number of vehicles that the target road segment can still accommodate. S6. Repeat steps S4 to S5 to update the capacity of the target road segment in real time, thereby updating the content displayed on the road segment intersection display until the target road segment is closed to entry and the road segment exit direction display shows that it is not allowed to pass. When multiple entry segments can all enter the target segment, each entry segment will receive its own actual number of vehicles and total capacity. When the actual number of vehicles in each entry segment is less than half of its total capacity, if the actual remaining capacity of the target segment is greater than the sum of the actual number of vehicles in multiple entry segments, the exit direction display of each entry segment will show that it is passable. If the actual remaining capacity of the target road segment is less than the sum of the actual number of vehicles in multiple entry road segments, then the number of vehicles that can enter displayed on the exit direction intersection display of each entry road segment shall be half of the actual remaining capacity of the target road segment. Except where the actual number of vehicles entering each road segment is less than half of the total capacity of each segment, the exit direction display of each current entry segment shows the number of vehicles that can enter. In this case, the number of vehicles that can enter each entry segment is the actual remaining capacity of the target segment × the actual number of vehicles in the current entry segment ÷ the sum of the actual number of vehicles in multiple entry segments.

2. The method for real-time joint control of road traffic information according to any one of claims 1, characterized in that: The intersection display includes directional information and text information. The directional information includes going straight, turning left, and turning right, while the text information displays the number of vehicles that can enter.

3. The method for real-time joint control of road traffic information according to claim 2, characterized in that: Direction and text display are in red or green.

4. The method for real-time joint control of road traffic information according to claim 2, characterized in that: The text displayed reads: "X vehicles are allowed to pass, where X is the number of vehicles that can enter." 5. The method for real-time joint control of road traffic information according to claim 1, characterized in that: When the actual number of vehicles entering each road segment is less than half of the total capacity of each segment, if the actual remaining capacity of the target road segment is greater than the sum of the actual number of vehicles entering multiple road segments, then the exit direction display of each road segment will show the number of vehicles that can enter, which is 99.

6. The system of a real-time road traffic information control method according to any one of claims 1-5, characterized in that: include: The entrance camera is installed on the gantry at the entrance of the road section to detect the number of vehicles entering the road section; Exit cameras, installed on gantry cranes at the exit of a road segment, are used to detect the number of vehicles leaving the segment. Intersection displays are installed on gantries at the entrance and exit of road sections to show whether passage is permitted, the direction of passage, and the number of vehicles that can pass. The sub-processor has an internal GPS positioning system and is installed on the gantry at the entrance and exit of the road segment. It obtains the length of the road segment based on the GPS at the entrance and exit of the road segment, and sets the average length of the vehicle after the entrance camera detects the vehicle entering the road segment. The main processor acquires and controls the content displayed on the intersection display based on the length of each road segment, the average length of vehicles, the total number of vehicles that each road segment can accommodate, the actual remaining number of vehicles that each road segment can accommodate, and the actual number of vehicles in each road segment.

7. The system of the real-time road traffic information control method according to claim 6, characterized in that: The intersection display has three screens, which respectively display the number of vehicles turning left and vehicles that can turn left, the number of vehicles going straight and vehicles that can go straight, and the number of vehicles turning right and vehicles that can turn right.

8. The system of the real-time road traffic information control method according to claim 7, characterized in that: There are three cameras at the entrance and three at the exit, used to detect the number of vehicles turning left, going straight, and turning right, respectively.

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