CN117173912B - Urban road traffic intelligent control method and server - Google Patents
Urban road traffic intelligent control method and server Download PDFInfo
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Abstract
An intelligent control method for urban road traffic and a server are provided, wherein the method comprises the steps that under the condition that monitoring image information about a road sent by monitoring equipment is received by the server, an accident occurrence place is determined according to the monitoring image information; determining a road where an accident place is located as a blocked road; obtaining estimated blocking length according to blocking traffic flow information and estimated blocking duration information; determining that a split road corresponding to the split vehicle flow information smaller than a preset blocking critical value is a clear road; determining a plurality of first shunting intersections of the blocked road connected with the unblocked road within the estimated blocking length; and sending a first instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps determine the direction of an indication arrow to be driven to the direction corresponding to the unobstructed road according to the first instruction, the problem of road blockage caused by traffic accidents is solved, the road blockage degree is reduced, and the road blockage time is shortened.
Description
Technical Field
The application belongs to the field of intelligent traffic control, and particularly relates to an intelligent control method and server for urban road traffic.
Background
With the gradual development of technology and the strong support of government, the automobile possession rate of people is increased year by year, vehicles on the streets are increased more and more, and urban road traffic is faced with an increasingly serious congestion problem.
In the prior art, in order to solve the problem of traffic jam, the intelligent traffic control technology has been developed to improve the road traffic efficiency and safety. The intelligent traffic control utilizes advanced communication, sensing, calculation and control technologies to carry out intelligent management and control on urban road traffic so as to realize optimal allocation and scheduling of traffic.
However, the prior art cannot make effective response to road traffic accidents, and when the traffic accidents occur, the traffic signal lamp cannot make effective changes to guide vehicles on the blocked road to orderly drive away from the blocked road, so that the vehicle blocking degree at the place is increased, and the traffic efficiency of the road is reduced.
Disclosure of Invention
The application provides an intelligent control method and a server for urban road traffic, which are used for solving the problem of road blockage caused by traffic accidents, reducing the degree of road blockage and reducing the time of road blockage.
In a first aspect, the present application provides an intelligent control method for urban road traffic, where a server determines an accident occurrence location according to monitoring image information about a road sent by a monitoring device when the server receives the monitoring image information; the server determines a road where the accident place is located as a blocked road; the method comprises the steps that the server obtains traffic jam information and estimated jam duration information of a to-be-entered road, the estimated jam duration information comprises arrival time and processing time, the arrival time is time required by a traffic police team and a road rescue team to reach the accident occurrence place, and the processing time is average processing time of the road rescue team; the server obtains estimated blocking length according to the blocking traffic flow information and the estimated blocking duration information; the server obtains all diversion roads connected with the blocked road and diversion traffic flow information corresponding to all diversion roads one by one under the condition that the estimated blocking length is larger than the preset maximum blocking length; the server determines that the split road corresponding to the split vehicle flow information smaller than a preset blocking critical value is a clear road; the server determines a plurality of first diversion intersections of the blocked road connected with the unblocked road within the estimated blocking length; the server sends a first instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps determine the direction of an indication arrow to be driven to the direction corresponding to the unobstructed road according to the first instruction.
Through adopting above-mentioned technical scheme, the server can obtain the whole reposition of redundant personnel roads that are connected with the jam road and traffic flow information thereof, screens out the less road of traffic flow information from it, as unobstructed road, then the server can confirm the jam road and the reposition of redundant personnel crossing that is connected with unobstructed road in estimating jam length to send the instruction to the variable traffic signal lamp at these crossing, make its direction that instructs the arrow become the direction of unobstructed road. Therefore, the vehicles which are blocked at the accident site can be effectively guided to the unobstructed road with less traffic flow, thereby obviously reducing the vehicle blocking condition at the accident site and improving the traffic efficiency of the road.
With reference to some embodiments of the first aspect, in some embodiments, the obtaining, by the server, an estimated congestion length according to the congestion traffic flow information and the estimated congestion duration information specifically includes: the server obtains a first distance between the traffic police team closest to the accident place and a second distance between the road rescue team closest to the accident place and the accident place; the server inputs the first distance and the traffic jam information into an arrival site estimated time function to obtain estimated time for warning; the server inputs the second distance and the traffic jam information into the arrival site estimated time function to obtain rescue estimated time; the server judges whether the estimated time for warning is longer than the estimated time for rescue; if the estimated time for warning is smaller than the estimated time for rescue, the server takes the estimated time for rescue as the arrival time; if the estimated time of alarm is longer than the estimated time of rescue, the server takes the estimated time of alarm as the arrival time.
By adopting the technical scheme, according to the related information of the traffic police team and the road rescue team closest to the accident occurrence place, the distance between the traffic police team and the accident occurrence place and the distance between the road rescue team and the accident occurrence place are respectively input into the on-site estimated time function, so that the accurate estimated blocking length can be obtained, and reliable data reference is provided for adjusting and changing the variable signal lamp.
With reference to some embodiments of the first aspect, in some embodiments, the arrival scene estimated time function is:
In the formula, T is the estimated time of warning or the estimated time of rescue, s is the first distance or the second distance, n is the traffic jam information, v is the normal running speed of police car or road rescue car, l is the estimated jam length, and m is the width of the jam road;
time coefficient for passing through a blocked road section;
for the time the police car or the road rescue car passes the congested road segment.
By adopting the technical scheme, the variables reaching the site can be input into a formula, so that the accurate estimated time reaching the site can be obtained, and the estimated blocking time is more accurate.
With reference to some embodiments of the first aspect, in some embodiments, after the server sends a first instruction to a plurality of first variable traffic lights of the plurality of first diversion intersections, to make the plurality of first variable traffic lights determine, according to the first instruction, a direction of an indication arrow to drive to a direction corresponding to the unobstructed road, the method further includes: the server determines a plurality of second diversion intersections of the blocked road, which are connected with the unblocked road outside the estimated blocked length; the server sends a second instruction to a plurality of second variable traffic signal lamps of a plurality of second diversion intersections, so that the duration of an indication arrow corresponding to the unobstructed road is increased and the duration of an indication arrow corresponding to the accident occurrence place is reduced by the plurality of second variable traffic signal lamps according to the second instruction.
By adopting the technical scheme, the indication arrow in the second variable traffic signal lamp is controlled, and the vehicle in the estimated blocking length is guided to the clear road, so that the road blocking degree is effectively reduced, and the road blocking time is reduced.
With reference to some embodiments of the first aspect, in some embodiments, the server sends a second instruction to a plurality of second variable traffic lights of the plurality of second diversion intersections, so that the plurality of second variable traffic lights increase the duration of the indication arrow corresponding to the unobstructed road and decrease the duration of the indication arrow corresponding to the accident site according to the second instruction, and the method further includes: the server sends a third instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections under the condition that the traffic police team and the road rescue team are determined to leave the accident occurrence place, so that the plurality of first variable traffic signal lamps are initialized according to the third instruction; the server sends a fourth instruction to a plurality of second variable traffic lights of the second shunting intersections, so that the second variable traffic lights are initialized according to the fourth instruction.
By adopting the technical scheme, after the traffic police team and the road rescue team are determined to leave the accident occurrence place, the changed variable traffic signal lamp is initialized, and the original traffic is restored.
With reference to some embodiments of the first aspect, in some embodiments, the server sends a fourth instruction to a plurality of second variable traffic lights of the plurality of second diversion intersections, and after the plurality of second variable traffic lights are initialized according to the fourth instruction, the method further includes: the server determining a third variable traffic signal nearest to the accident site in the direction of travel of the blocked road; the server sends a fifth instruction to the third variable traffic signal lamp, so that the third variable traffic signal lamp increases the duration of the indication arrow corresponding to the accident occurrence place according to the fifth instruction.
By adopting the technical scheme, the variable traffic signal lamp nearest to the accident place is recovered to be original, so that vehicles originally near the accident place can leave the accident place as soon as possible, and the road blockage caused by traffic accidents is thoroughly solved.
With reference to some embodiments of the first aspect, after the server sends a first instruction to the first variable traffic signals at the first diversion intersections, and the first variable traffic signals determine, according to the first instruction, a direction of an indication arrow to be driven to a direction corresponding to the unobstructed road, the method further includes: the server receives a recommended route request sent by information interaction equipment of a user, wherein the recommended route request comprises current position information and target position information of the user; the server obtains a plurality of first routes according to the current position information and the target position information; the server screens out the first routes passing through the accident occurrence place in all the first routes to obtain a plurality of second routes; the server sends the second route with the shortest route to the information interaction equipment of the user as a response to the recommended route request.
By adopting the technical scheme, the route which does not pass through the blocked road is sent to the information interaction equipment of the user, so that the user is prevented from entering the blocked road in advance, the blocking degree is prevented from being increased, and a clear route is provided for the user to reach the destination.
In a second aspect, an embodiment of the present application provides an intelligent control server for urban road traffic, the server comprising: the processing module is used for determining an accident occurrence place according to the monitoring image information under the condition that the monitoring image information about the road sent by the monitoring equipment is received; the estimated blocking length is obtained according to the blocking traffic flow information and the estimated blocking duration information;
The determining module is used for determining the road where the accident place is located as a blocked road; the method comprises the steps of determining that a split road corresponding to the split vehicle flow information smaller than a preset blocking critical value is a clear road; a plurality of first diversion intersections for determining that the blocked road is connected with the unblocked road within the estimated blocked length;
The system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring traffic jam information and estimated jam duration information of a to-be-entered road, the estimated jam duration information comprises arrival time and processing time, the arrival time is the time required by a traffic police team and a road rescue team to reach the accident occurrence place, and the processing time is the average processing time of the road rescue team; the method comprises the steps of obtaining all diversion roads connected with a blocking road and diversion traffic flow information corresponding to all diversion roads one by one under the condition that the estimated blocking length is larger than a preset maximum blocking length;
And the sending module is used for sending a first instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps determine the direction of the indication arrow to be driven to the direction corresponding to the unobstructed road according to the first instruction.
In a third aspect, an embodiment of the present application provides a server, including: one or more processors and memory; the memory is coupled to the one or more processors, the memory for storing computer program code comprising computer instructions that are invoked by the one or more processors to cause the electronic device to perform the method as described in the first aspect and any possible implementation of the first aspect.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium comprising instructions which, when run on an electronic device, cause the electronic device to perform a method as described in the first aspect and any possible implementation of the first aspect.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
1. The server can acquire all the diversion roads connected with the blocked road and the traffic flow information thereof, screens out roads with smaller traffic flow information from the diversion roads as the unblocked roads, then the server can determine diversion intersections of the blocked road connected with the unblocked roads within the estimated blocking length, and sends instructions to variable traffic signal lamps of the intersections so that the direction of the indication arrow is changed into the direction of the unblocked roads. Therefore, the vehicles which are blocked at the accident site can be effectively guided to the unobstructed road with less traffic flow, thereby obviously reducing the vehicle blocking condition at the accident site and improving the traffic efficiency of the road.
2. According to the related information of the traffic police team and the road rescue team closest to the accident place, the distance between the traffic police team and the accident place and the distance between the road rescue team and the accident place are respectively input into the on-site estimated time function, so that the accurate estimated blocking length can be obtained, and reliable data reference is provided for adjusting and changing the variable signal lamp.
3. The indication arrows in the first variable traffic signal lamp and the second variable traffic signal lamp are controlled to guide the vehicles positioned in the estimated blocking length to the clear road, so that the road blocking degree is effectively reduced, and the road blocking time is reduced.
Drawings
Fig. 1 is a schematic diagram of an application scenario of an intelligent control server for urban road traffic in an embodiment of the application.
Fig. 2 is a schematic flow chart of an intelligent control method for urban road traffic in an embodiment of the application.
FIG. 3 is a flow chart of a method for obtaining arrival time in an embodiment of the present application.
Fig. 4 is a schematic diagram of a functional module structure of an intelligent control server for urban road traffic according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a physical device structure of an intelligent control server for urban road traffic according to an embodiment of the present application.
Detailed Description
The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It should also be understood that the term "and/or" as used in this disclosure is intended to encompass any or all possible combinations of one or more of the listed items.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of embodiments of the application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Fig. 1 is a schematic diagram of an application scenario of an intelligent control server for urban road traffic in an embodiment of the application.
Referring to fig. 1, the accident site is at the intersection corresponding to the third variable traffic signal lamp, the first split intersection is the intersection connected with the blocked road within the estimated blocked length, and the second split intersection is the intersection connected with the blocked road outside the estimated blocked length. The first variable signal lamp is a signal lamp corresponding to a first shunting intersection and an intersection connected with a blocked road, the second variable signal lamp is a signal lamp corresponding to a second shunting intersection and an intersection connected with a blocked road, the unobstructed road is a road connected with the blocked road, the traffic flow of which is smaller than a preset blocking critical value, and the first variable signal lamp and the second variable signal lamp are signal lamps capable of changing the direction of an indication arrow.
The following describes a method for intelligent control of urban road traffic in an embodiment of the present application with reference to fig. 2:
fig. 2 is a schematic flow chart of an intelligent control method for urban road traffic in an embodiment of the application.
S201, the server determines an accident occurrence place according to the monitoring image information under the condition that the server receives the monitoring image information about the road sent by the monitoring equipment;
all monitoring devices upload all monitoring image information to the server, and after the server receives the monitoring image information, the server determines that an accident occurs according to the monitoring image information and determines the accident occurrence place.
S202, the server determines a road where an accident place is located as a blocked road;
after a traffic accident, the accident vehicle stays in place, so that the road where the accident occurs is blocked, and the server determines the road where the accident occurs as the blocked road.
It will be appreciated that the road where the accident site is located is defined as the whole road in the present application, including the opposite road, and the blocking road may be a one-way road in real life, which is not limited herein.
S203, the server acquires traffic jam information of a road to be blocked and estimated blocking duration information;
The server obtains traffic jam information and estimated jam duration information of the road to be blocked according to the road to be blocked, wherein the estimated jam duration information is obtained through calculation, and is described below, and details are omitted here. The estimated blocking duration information comprises arrival time and processing time, wherein the arrival time is time required by an traffic police team and a road rescue team to reach an accident occurrence place, and the processing time is average processing time of the road rescue team to the accident scene processing.
It should be noted that, only when the traffic police team and the road rescue team reach the accident place, the scene can be cleaned, so the arrival time is the time required for the traffic police team and the road rescue team to reach the accident place.
In addition, the degree of the traffic accident is different, the time for cleaning the scene of the road rescue team is different, and the accurate processing time cannot be obtained, so the average processing time of the road rescue team on the processing of the accident scene is taken as the processing time.
S204, the server obtains estimated blocking length according to the blocking traffic flow information and the estimated blocking duration information;
After obtaining the congestion traffic information and the estimated congestion duration information, the server calculates the estimated congestion length according to the congestion traffic information and the estimated congestion duration information, and specifically multiplies the value corresponding to the congestion traffic information and the value corresponding to the estimated congestion duration information to obtain the estimated congestion length.
S205, under the condition that the server determines that the estimated blocking length is greater than the preset maximum blocking length, the server acquires all the shunting roads connected with the blocking road and shunting traffic flow information corresponding to all shunting roads one by one;
The method comprises the steps that under the condition that the estimated blocking length is larger than the preset maximum blocking length, the server obtains all the diversion roads connected with the blocking road and diversion traffic flow information corresponding to all the diversion roads one by one, the maximum blocking length is a critical value seriously affecting road traffic, when the estimated blocking length is larger than the maximum blocking length, the server is required to control traffic, then the server obtains all the diversion roads connected with the blocking road, and then the diversion traffic flow information corresponding to all the diversion roads one by one is obtained.
Here, an example is illustrated: for example, the estimated blocking length is 2000 meters, the maximum blocking length is 1500 meters, and six diversion roads are obtained, which are respectively: the split road A, the split road B, the split road C, the split road D, the split road F and the split road G are respectively provided with the following split vehicle flow information: 10, 20, 23,9,5, 11.
S206, the server determines that a split road corresponding to the split vehicle flow information smaller than a preset blocking critical value is a clear road; and taking the split road corresponding to the split vehicle flow information smaller than the preset blockage critical value as a smooth road, so that the vehicle can be guided into the smooth road, and the purpose of relieving blockage is achieved. In the above example, assuming that the preset blockage threshold is 15, a clear road can be obtained as follows: a diversion road A, a diversion road D, a diversion road F and a diversion road G. To facilitate visual perception of the picture described herein, please refer to the clear road labeled in fig. 1.
S207, the server determines a plurality of first diversion intersections of the blocked road connected with the unblocked road within the estimated blocking length; the server determines that the blocked road is connected with a plurality of first diversion intersections of the unblocked road in the estimated blocked length, and receives the above example, and referring to fig. 1, the first diversion intersections which are connected with the unblocked road in the estimated blocked length can be obtained, and the first diversion intersections are intersections of the unblocked road A and the blocked road.
It should be understood that the foregoing illustrates only one first split-flow intersection, and that there may be a plurality of first split-flow intersections in actual situations, which is not limited herein.
S208, the server sends first instructions to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps determine the direction of the indication arrow to be driven to the direction corresponding to the unobstructed road according to the first instructions;
the server sends a first instruction to a plurality of first variable traffic lights of a plurality of first shunting intersections, so that the plurality of first variable traffic lights determine the direction of the indication arrow to be in the direction corresponding to the unobstructed road according to the first instruction, and in the previous example, referring to fig. 1, the server sends the first instruction to all the first variable traffic lights of the first shunting intersections, so that all the first variable traffic lights change the direction of the indication arrow to be in the direction corresponding to the unobstructed road according to the first instruction, and the indication arrow is all pointed to the unobstructed road as can be seen through fig. 1.
S209, the server determines a plurality of second shunting intersections of the blocked road, which are connected with the unblocked road outside the estimated blocking length; the server determines a plurality of second shunting junctions, which are connected with the unobstructed roads outside the estimated blocking length, and receives the above example, and referring to fig. 1, the second shunting junctions, which are connected with the unobstructed roads outside the estimated blocking length, can be obtained, wherein the second shunting junctions comprise three unobstructed roads, namely, a shunting road D, a shunting road F and a shunting road G.
It should be understood that the foregoing illustrates only one second split-flow intersection, and that there may be a plurality of second split-flow intersections in actual situations, which is not limited herein.
S210, the server sends second instructions to a plurality of second variable traffic signal lamps of a plurality of second diversion intersections, so that the duration of an indication arrow corresponding to a clear road is increased and the duration of an indication arrow corresponding to an accident occurrence place is reduced by the plurality of second variable traffic signal lamps according to the second instructions.
The server sends the second instructions to the plurality of second variable traffic lights at the plurality of second diversion intersections, so that the plurality of second variable traffic lights increase the duration of the indication arrows corresponding to the unobstructed roads and decrease the duration of the indication arrows corresponding to the places where the driving accidents happen according to the second instructions, and according to the previous example, referring to fig. 1, the server sends the second instructions to the plurality of second variable traffic lights at the plurality of second diversion intersections, increases the duration of the indication arrows corresponding to the unobstructed roads and decreases the duration of the indication arrows corresponding to the places where the driving accidents happen, thereby ensuring that vehicles entering the obstructed roads can be reduced, and increasing the degree of the blockage can be avoided.
In the above embodiment, the clear road connected with the blocked road in the estimated blocked length is determined, and the vehicle is guided into the clear road by changing the variable traffic signal lamp corresponding to the clear road connected with the blocked road, so that the problem of road blocking caused by traffic accidents is solved, the road blocking degree is reduced, and the road blocking time is reduced.
In the above embodiment, step S203 refers to estimated congestion duration information, and in the following, description is made on how to obtain estimated congestion duration information in the embodiment of the present application with reference to fig. 3:
Fig. 3 is a flowchart of a method for obtaining arrival time according to an embodiment of the application.
S301, a server acquires a first distance between an traffic police team closest to an accident place and the accident place and a second distance between a road rescue team closest to the accident place and the accident place;
The server obtains a first distance between the traffic police team closest to the accident place and a second distance between the road rescue team closest to the accident place and the accident place, wherein only the traffic police team closest to the accident place and the road rescue team are considered, and whether the traffic police team closest to the accident place is in the area of the traffic police team closest to the accident place or not is not considered.
S302, the server inputs the first distance and the traffic jam information into an arrival site estimated time function to obtain estimated time for warning;
The server inputs the first distance and the traffic jam flow information into an arrival site estimated time function to obtain an alarm output estimated time, wherein the site estimated time function is as follows:
In the formula, T is the estimated time of warning or the estimated time of rescue, s is the first distance or the second distance, n is the traffic jam information, v is the normal running speed of police car or road rescue car, l is the estimated jam length, and m is the width of the jam road;
time coefficient for passing through a blocked road section;
for the time the police car or the road rescue car passes the congested road segment.
Here, it is exemplified that the first distance is 2500 m, the traffic jam information is 500, the speed at which the police car normally runs is 60 km/h, the length of the jammed road is 20m, and the width of the jammed road is 10 m. Substituting the data into a field estimated time function to obtain the estimated time of warning out of 45 minutes.
S303, the server inputs the second distance and the traffic jam flow information into an arrival site estimated time function to obtain rescue estimated time;
The server inputs the second distance and the traffic jam information into the on-site estimated time function to obtain the estimated rescue time, and receives the previous example, wherein the second distance is 2000 meters, the traffic jam information is 500, the normal running speed of the road rescue vehicle is 50 km/h, the length of the jammed road is 20 meters, and the width of the jammed road is 10 meters. Substituting the data into a field estimated time function to obtain the estimated rescue time of 37 minutes.
S304, the server judges whether the estimated warning time is longer than the estimated rescue time;
S305, if the estimated time for warning is smaller than the estimated time for rescue, the server takes the estimated time for rescue as the arrival time;
S306, if the estimated time of alarm is larger than the estimated time of rescue, the server takes the estimated time of alarm as the arrival time.
The three steps are one judging step, the three steps are combined into one to describe, the previous example is accepted, and the estimated time of alarm is larger than the estimated time of rescue, so that the server takes the estimated time of alarm as the arrival time.
It should be noted that, in the above scheme, the default police car and the road rescue car start simultaneously, in actual situations, the default police car and the road rescue car start simultaneously for the sake of calculation convenience.
In the above embodiment, according to the related information of the traffic police team and the road rescue team closest to the accident occurrence place, the distance between the traffic police team and the accident occurrence place and the distance between the road rescue team and the accident occurrence place are respectively input into the on-site estimated time function, so that the accurate estimated blocking length can be obtained, and reliable data reference is provided for adjusting and changing the variable signal lamp.
After a period of time, the traffic police team and the road rescue team have cleaned the accident scene, and under the condition that the server determines that the traffic police team and the road rescue team leave the accident occurrence place, the server sends a third instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps are initialized according to the third instruction, and similarly, the server sends a fourth instruction to a plurality of second variable traffic signal lamps of a plurality of second shunting intersections, so that the plurality of second variable traffic signal lamps are initialized according to the fourth instruction, and after the traffic accident treatment is completed, the server can restore the initialization of the changed variable traffic signal lamps to be the original state.
In the above embodiment, after determining that the traffic police team and the road rescue team leave the accident site, the server initializes the modified variable traffic signal lamp to resume the original traffic.
The above embodiment initializes the variable traffic signal lamps of the first and second diversion ports, then the server determines a third variable traffic signal lamp closest to the accident occurrence place in the traveling direction of the blocked road, and then sends a fifth instruction to the third variable traffic signal lamp, so that the third variable traffic signal lamp increases the duration of the indication arrow corresponding to the accident occurrence place according to the fifth instruction.
In the above embodiment, the variable traffic signal lamp nearest to the accident site is restored as it is, so that the vehicle originally near the accident site can leave the accident site, and the road jam caused by the traffic accident is thoroughly solved.
In addition, when the traffic accident is not processed, the server receives a recommended route request sent by information interaction equipment of a user, the recommended route request comprises current position information and target position information of the user, the server obtains a plurality of first routes according to the current position information and the target position information, screens out the first routes passing through the accident occurrence place in all the first routes to obtain a plurality of second routes, and sends the second routes with the shortest routes to the information interaction equipment of the user to be used as responses to the recommended route request.
It should be understood that the information interaction device is a terminal device capable of performing information interaction with a server, such as a mobile phone, a tablet computer, a vehicle-mounted computer, and the like, which is not limited herein.
In the above embodiment, the route which does not pass through the blocked road is sent to the information interaction device of the user, so that the user is prevented from entering the blocked road in advance, the blocking degree is prevented from being increased, and a clear route is provided for the user to reach the destination.
The server in the embodiment of the present application is described below from a module point of view:
Referring to fig. 4, a schematic functional module structure of an intelligent control server for urban road traffic according to an embodiment of the present application is shown.
The server includes:
a processing module 401, configured to determine an accident site according to the monitoring image information when receiving the monitoring image information about the road sent by the monitoring device; the estimated blocking length is obtained according to the blocking traffic flow information and the estimated blocking duration information;
A determining module 402, configured to determine, by the determining module, a road where the accident site is located as a blocked road; the method comprises the steps of determining that a split road corresponding to the split vehicle flow information smaller than a preset blocking critical value is a clear road; a plurality of first diversion intersections for determining that the blocked road is connected with the unblocked road within the estimated blocked length;
the obtaining module 403 is configured to obtain congestion traffic information and estimated congestion duration information of the congestion road, where the estimated congestion duration information includes an arrival time and a processing time, the arrival time is a time required for a traffic police team and a road rescue team to reach the accident site, and the processing time is an average processing time of the road rescue team; the method comprises the steps of obtaining all diversion roads connected with a blocking road and diversion traffic flow information corresponding to all diversion roads one by one under the condition that the estimated blocking length is larger than a preset maximum blocking length;
and the sending module 404 is configured to send a first instruction to a plurality of first variable traffic lights at a plurality of first diversion intersections, so that the plurality of first variable traffic lights determine a direction of an indication arrow to be driven to a direction corresponding to the unobstructed road according to the first instruction.
The server in the embodiment of the present application is described above from the point of view of a modularized functional entity, and the server in the embodiment of the present application is described below from the point of view of hardware processing, please refer to fig. 5, which is a schematic diagram of an entity device of a substation personnel behavior detection server provided in the embodiment of the present application.
It should be noted that the structure of the server shown in fig. 5 is only an example, and should not limit the functions and the application scope of the embodiments of the present invention.
As shown in fig. 5, the server includes a central processing unit (Central Processing Unit, CPU) 501, which can perform various appropriate actions and processes, such as performing the methods in the above-described embodiments, according to a program stored in a Read-Only Memory (ROM) 502 or a program loaded from a storage portion 508 into a random access Memory (Random Access Memory, RAM) 503. In the RAM 503, various programs and data required for the system operation are also stored. The CPU 501, ROM502, and RAM 503 are connected to each other through a bus 504. An Input/Output (I/O) interface 505 is also connected to bus 504.
The following components are connected to the I/O interface 505: an input section 506 including a camera, an infrared sensor, and the like; an output portion 507 including a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN (Local Area Network ) card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The drive 510 is also connected to the I/O interface 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as needed so that a computer program read therefrom is mounted into the storage section 508 as needed.
In particular, according to embodiments of the present invention, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising a computer program for performing the method shown in the flowchart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 509, and/or installed from the removable media 511. When executed by a Central Processing Unit (CPU) 501, the computer program performs the various functions defined in the present invention.
It should be noted that, the computer readable medium shown in the embodiments of the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with a computer-readable computer program embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. Where each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Specifically, the server of the present embodiment includes a processor and a memory, and the memory stores a computer program, and when the computer program is executed by the processor, the method for measuring spectral information provided in the foregoing embodiment is implemented.
As another aspect, the present invention also provides a computer-readable storage medium, which may be contained in the server described in the above embodiment; or may exist alone without being assembled into the server. The storage medium carries one or more computer programs which, when executed by a processor of the server, cause the server to implement the methods provided in the embodiments described above.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
As used in the above embodiments, the term "when …" may be interpreted to mean "if …" or "after …" or "in response to determination …" or "in response to detection …" depending on the context. Similarly, the phrase "at the time of determination …" or "if detected (a stated condition or event)" may be interpreted to mean "if determined …" or "in response to determination …" or "at the time of detection (a stated condition or event)" or "in response to detection (a stated condition or event)" depending on the context.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.
Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium includes: ROM or random access memory RAM, magnetic or optical disk, etc.
Claims (8)
1. An intelligent control method for urban road traffic is characterized by comprising the following steps:
The method comprises the steps that when a server receives monitoring image information about a road sent by monitoring equipment, the server determines an accident occurrence place according to the monitoring image information;
the server determines a road where the accident place is located as a blocked road;
The server acquires traffic jam information and estimated jam duration information of the jam road to be entered, wherein the estimated jam duration information comprises arrival time and processing time, the arrival time is the time required by traffic police and road rescue teams to reach the accident occurrence place, and the processing time is the average processing time of the road rescue teams;
the server obtains estimated blocking length according to the blocking traffic flow information and the estimated blocking duration information;
the server obtains all diversion roads connected with the blocked road and diversion traffic flow information corresponding to all diversion roads one by one under the condition that the estimated blocking length is larger than a preset maximum blocking length;
The server determines that the split road corresponding to the split vehicle flow information smaller than a preset blocking critical value is a clear road; the server determines a plurality of first diversion intersections, in which the blocked road is connected with the unobstructed road within the estimated blocked length;
The server sends a first instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps determine the direction of an indicated arrow to be driven to the direction corresponding to the unobstructed road according to the first instruction;
The server obtains estimated blocking length according to the blocking traffic flow information and the estimated blocking duration information, and specifically comprises the following steps:
the server obtains a first distance between the traffic police team closest to the accident place and a second distance between the road rescue team closest to the accident place and the accident place;
the server inputs the first distance and the traffic jam information into an arrival site estimated time function to obtain estimated time for warning;
the server inputs the second distance and the traffic jam information into the arrival site estimated time function to obtain rescue estimated time;
the server judges whether the estimated time for warning is longer than the estimated time for rescue;
If the estimated time for warning is smaller than the estimated time for rescue, the server takes the estimated time for rescue as the arrival time;
If the estimated time of alarm is larger than the estimated time of rescue, the server takes the estimated time of alarm as the arrival time;
the arrival site estimated time function is as follows:
In the formula, T is the estimated time of warning or the estimated time of rescue, s is the first distance or the second distance, n is the traffic jam information, v is the normal running speed of police car or road rescue car, l is the estimated jam length, and m is the width of the jammed road;
time coefficient for passing through a blocked road section;
and the time for the police car or the road rescue car to pass through the blocked road section.
2. The method of claim 1, wherein the server sends a first instruction to a plurality of first variable traffic lights at a plurality of the first diversion intersections, and wherein after the plurality of first variable traffic lights determine a direction of an indicated arrow to drive in a direction corresponding to the clear road according to the first instruction, the method further comprises:
the server determines a plurality of second diversion intersections, wherein the blocked road is connected with the unobstructed road outside the estimated blocking length;
The server sends a second instruction to a plurality of second variable traffic signal lamps of the second diversion intersections, so that the duration of an indication arrow corresponding to the unobstructed road is increased and the duration of an indication arrow corresponding to the accident occurrence place is reduced by the second variable traffic signal lamps according to the second instruction.
3. The method of claim 2, wherein the server sends a second instruction to a number of second variable traffic lights of the number of second diversion intersections, causing the number of second variable traffic lights to increase a duration of an indicated arrow to the clear road corresponding to the second instruction and decrease a duration of an indicated arrow to the accident site corresponding to the second instruction, the method further comprising:
The server sends a third instruction to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections under the condition that the traffic police team and the road rescue team are determined to leave the accident occurrence place, so that the plurality of first variable traffic signal lamps are initialized according to the third instruction;
And the server sends a fourth instruction to a plurality of second variable traffic signal lamps of a plurality of second shunting intersections, so that the plurality of second variable traffic signal lamps are initialized according to the fourth instruction.
4. The method of claim 3, wherein the server sends a fourth instruction to a number of second variable traffic lights of a number of the second diversion intersections, the method further comprising, after initializing a number of the second variable traffic lights according to the fourth instruction:
The server determining a third variable traffic signal lamp nearest to the accident site in the direction of travel of the blocked road; and the server sends a fifth instruction to the third variable traffic signal lamp, so that the third variable traffic signal lamp increases the duration of an indication arrow corresponding to the accident occurrence place according to the fifth instruction.
5. The method of claim 1, wherein the server sends a first instruction to a plurality of first variable traffic lights at a plurality of the first diversion intersections, and wherein after the plurality of first variable traffic lights determine a direction of an indicated arrow to drive in a direction corresponding to the clear road according to the first instruction, the method further comprises:
the server receives a recommended route request sent by information interaction equipment of a user, wherein the recommended route request comprises current position information and target position information of the user;
the server obtains a plurality of first routes according to the current position information and the target position information;
The server screens out first routes passing through the accident occurrence place in all first routes to obtain a plurality of second routes;
And the server sends the second route with the shortest route to the information interaction equipment of the user as a response to the recommended route request.
6. An intelligent control server for urban road traffic, comprising:
the processing module is used for determining an accident occurrence place according to the monitoring image information under the condition that the monitoring image information about the road sent by the monitoring equipment is received; the estimated blocking length is obtained according to the blocking traffic flow information and the estimated blocking duration information;
The determining module is used for determining the road where the accident place is located as a blocked road; the method comprises the steps of determining a split road corresponding to the split vehicle flow information smaller than a preset blocking critical value as a clear road; a plurality of first diversion intersections for determining that the blocked road is connected with the unobstructed road within the estimated blocked length;
The acquisition module is used for acquiring traffic jam information and estimated jam duration information of the jam road to be entered, wherein the estimated jam duration information comprises arrival time and processing time, the arrival time is the time required by traffic police and road rescue teams to reach the accident occurrence place, and the processing time is the average processing time of the road rescue teams; the method comprises the steps of obtaining all diversion roads connected with the blocked road and diversion traffic flow information corresponding to all diversion roads one by one under the condition that the estimated blocking length is larger than a preset maximum blocking length;
The sending module is used for sending first instructions to a plurality of first variable traffic signal lamps of a plurality of first shunting intersections, so that the plurality of first variable traffic signal lamps determine the direction of an indication arrow to be driven to the direction corresponding to the unobstructed road according to the first instructions;
The processing module is used for obtaining the estimated blocking length through the following modes:
Acquiring a first distance between the traffic police team closest to the accident place and a second distance between the road rescue team closest to the accident place and the accident place;
Inputting the first distance and the traffic jam flow information into an arrival site estimated time function to obtain estimated time for warning;
inputting a second distance and the traffic jam information into the arrival site estimated time function to obtain rescue estimated time;
Judging whether the estimated time for warning is longer than the estimated time for rescue;
if the estimated time for warning is smaller than the estimated time for rescue, the estimated time for rescue is taken as the arrival time;
If the estimated time of alarm is longer than the estimated time of rescue, the estimated time of alarm is used as the arrival time and the estimated time function of arrival site is as follows:
In the formula, T is the estimated time of warning or the estimated time of rescue, s is the first distance or the second distance, n is the traffic jam information, v is the normal running speed of police car or road rescue car, l is the estimated jam length, and m is the width of the jammed road;
time coefficient for passing through a blocked road section;
and the time for the police car or the road rescue car to pass through the blocked road section.
7. An intelligent control server for urban road traffic, comprising: one or more processors and memory; the memory is coupled to the one or more processors, the memory for storing computer program code comprising computer instructions that the one or more processors invoke to cause the server to perform the method of any of claims 1-5.
8. A computer readable storage medium comprising instructions which, when run on an electronic device, cause the electronic device to perform the method of any one of claims 1-5.
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