CN108346288B - Road section operation state early warning method and device and electronic equipment - Google Patents
Road section operation state early warning method and device and electronic equipment Download PDFInfo
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- CN108346288B CN108346288B CN201810148301.7A CN201810148301A CN108346288B CN 108346288 B CN108346288 B CN 108346288B CN 201810148301 A CN201810148301 A CN 201810148301A CN 108346288 B CN108346288 B CN 108346288B
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- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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Abstract
The invention provides a road section running state early warning method, a road section running state early warning device and electronic equipment, wherein the method comprises the following steps: acquiring road section information of each road section in a preset electronic map, and respectively judging whether the road condition data, the traffic dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judgment conditions or not for each road section; if the road condition data, the traffic and dispatching data, the entrance and exit traffic data or the congestion state data of any road section meet the corresponding congestion judgment condition, determining that the road section is congested and giving out early warning on the electronic map and a preset road network diagram, so that the acquisition precision and timeliness of the running state data of the expressway network are effectively improved, the early warning precision of the congested road section is further improved, support is provided for traffic dispersion and emergency command of a road management department, and the technical effect of guaranteeing the safe and smooth travel of the public is provided.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a road section running state early warning method and device and electronic equipment.
Background
In recent years, with the development of social economy, the living standard of people is improved, the construction of traffic infrastructure is deepened continuously, and the automobile holding quantity and the domestic driving and tourism scale are increased obviously. With the gradual entrance of automobiles into families, people pay more and more attention to safe, convenient and quick public travel services, the demand is more and more urgent, and the expected value is higher and higher. How to ensure the safety and smoothness of the road network also becomes an important subject of the management department of the traffic industry.
Due to the characteristic of wide line length of the highway, the highway management department mainly acquires the running state information of the road network by monitoring equipment such as road administration, traffic police, car owner feedback, video monitoring, traffic dispatching and the like.
In society, map providers such as maps of high-grade and hundredth degrees, etc. acquire data such as position, speed, etc. of floating vehicles on the road and users by a location-based LBS technology, and obtain congested road sections through calculation and analysis of big data, and provide travel service for the public.
However, the road network operation state is collected in a manual mode, the response is slow, information is received passively, and the capability of finding problems actively is lacked. The monitoring equipment needs to deploy a large amount of equipment, and a large amount of capital is needed for construction and later operation and maintenance, so that the whole road network can be detected, visible and controllable; due to the fact that the map businessmen are based on the large data analysis, the congested road section is limited by the number of passing floating vehicles and users, and due to the fact that the wide line length of the road surface is long, when the number of collected data is small, the result of collected data is not accurate enough, and therefore the error of early warning of the congested road section is large.
Disclosure of Invention
In view of this, the present invention provides a method, an apparatus, and an electronic device for early warning a road segment operation state, so as to solve the technical problem of early warning a congested road segment due to an inaccurate data acquisition result in the prior art.
In a first aspect, an embodiment of the present invention provides a road segment operation state early warning method, including:
acquiring road section information of each road section in a preset electronic map, wherein the road section information comprises: road condition data of a road section, traffic data of vehicles running on the road section, access and exit traffic data of the road section and congestion state data provided by a map provider;
judging whether the road condition data, the traffic-dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judgment conditions or not respectively for each road section;
and if the road condition data, the traffic and dispatching data, the entrance and exit traffic data or the congestion state data of any road section meet the corresponding congestion judgment condition, determining that the road section is congested and giving out early warning on the electronic map and a preset road network diagram.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where determining whether the road condition data meets a preset congestion determination condition corresponding to the road condition data includes:
after a preset time interval, updating the road condition data of each road section, wherein the road condition data comprises: road section name, start and stop point pile number, length of a vehicle pressing section, traffic influence degree, event description and predicted cancellation time;
judging whether the road section name or the start and stop point pile number before updating is in the updated road condition data;
if the road section name or the start and stop point pile number before updating is located in the updated road condition data, judging whether the length of the vehicle pressing section before updating, the traffic influence degree, the event description or the predicted cancellation time is not located in the updated road condition data; if not, sending out early warning, and if the two are located, ignoring;
and if the road section name and the start and stop point pile number are not in the updated road condition data before updating, sending out early warning.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the determining whether the intermodulation data meets a preset congestion determination condition corresponding to the intermodulation data includes:
calculating the traffic volume of two adjacent intermodulation devices according to preset traffic time, wherein the intermodulation devices are used for collecting the intermodulation data, and the preset traffic time is determined according to the distance between the two adjacent intermodulation devices and a preset average vehicle speed;
if the ratio of the traffic volume corresponding to the traffic dispatching equipment positioned at the upstream of the driving direction to the traffic volume corresponding to the traffic dispatching equipment positioned at the downstream of the driving direction is smaller than a preset blocking threshold value, an early warning is sent out;
and if the ratio is greater than a preset delay threshold value which is greater than the preset blocking threshold value, determining the delay state of the vehicle on the road section where the two adjacent cross-dispatching devices are located.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the determining whether the entrance/exit traffic data meets the corresponding preset congestion determination condition includes:
acquiring traffic flow data at an outlet and an inlet of each road section;
calculating a first average time interval of card taking of two adjacent vehicles entering the road section within a preset time period and a second average time interval of rod lifting time of a front vehicle paying and rear vehicle paying and card reading time of a rear vehicle paying and reading time when the front vehicle paying and the rear vehicle paying leave the road section for each road section;
and if the first average time interval is smaller than a preset first time threshold and the second average time interval is smaller than a preset second time threshold, sending out early warning.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the determining whether the congestion state data meets the preset congestion determination condition includes:
after a preset time interval, updating congestion state data of each road section, wherein the congestion state data comprises: the method comprises the following steps of (1) congestion road section name, longitude and latitude, average vehicle speed, congestion state and congestion state length;
judging whether the name or longitude and latitude of the congested road section before updating is in the updated road condition data;
if the name or longitude and latitude of the congested road section before updating is in the updated road condition data, judging whether the average vehicle speed, the congestion state or the congestion state length before updating is not in the updated road condition data; if not, sending out early warning, and if the two are located, ignoring;
and if the name or longitude and latitude of the congested road section are not located in the updated road condition data before updating, sending out early warning.
With reference to the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the method further includes:
acquiring preset electronic map data;
establishing an electronic map according to the electronic map data;
and abstracting the electronic map to obtain the road network sketch map.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the method further includes:
and carrying out early warning prompt in a page pop-up mode and/or a sound effect mode.
In a second aspect, an embodiment of the present invention further provides a road section operation state early warning device, including:
the acquisition module acquires road section information of each road section in a preset electronic map, wherein the road section information comprises: road condition data of a road section, traffic data of vehicles running on the road section, access and exit traffic data of the road section and congestion state data provided by a map provider;
the judging module is used for respectively judging whether the road condition data, the traffic dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judging conditions or not according to each road section;
and the determining module is used for determining that the road section is congested and giving out early warning on the electronic map and a preset road network diagram if the road condition data, the traffic data, the entrance/exit traffic data or the congestion state data road section information of any road section meets the congestion judging condition corresponding to the road section information.
In a third aspect, an embodiment of the present invention further provides an electronic device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the steps of the method according to the first aspect when executing the computer program.
In a fourth aspect, the present invention also provides a computer-readable medium having non-volatile program code executable by a processor, where the program code causes the processor to execute the method of the first aspect.
The embodiment of the invention has the following beneficial effects: the embodiment of the invention can effectively improve the acquisition precision and timeliness of the running state data of the expressway network, further improve the early warning precision of the congested road section, provide support for traffic dispersion and emergency command of a road management department and provide guarantee for safe and smooth travel of the public.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a road section operation state early warning method according to an embodiment of the present invention;
fig. 2 is a flowchart of step S102 according to an embodiment of the present invention;
fig. 3 is a flowchart of step S102 according to an embodiment of the present invention;
fig. 4 is a flowchart of step S102 according to an embodiment of the present invention;
fig. 5 is a flowchart of step S102 according to an embodiment of the present invention;
fig. 6 is a structural diagram of a road section operation state early warning device according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the road network running state is collected in a manual mode, the response is slow, information is received passively, and the capability of finding problems actively is lacked. The monitoring equipment needs to deploy a large amount of equipment, and a large amount of capital is needed for construction and later operation and maintenance, so that the whole road network can be detected, visible and controllable; due to the fact that map businessmen are congested road sections based on big data analysis and limited by the number of passing floating vehicles and users, due to the fact that the road surface is long in line length, when the number of collected road sections is small, the result of collected data is not accurate enough, and therefore the error of early warning of the congested road sections is large.
In order to facilitate understanding of the present embodiment, a detailed description is first given of a road section operation state early warning method disclosed in the embodiment of the present invention, and as shown in fig. 1, the road section operation state early warning method may include the following steps.
Step S101, obtaining road section information of each road section in a preset electronic map, wherein the road section information comprises: road condition data for a road segment, traffic data for vehicles traveling on a road segment, access traffic data for a road segment, and congestion status data provided by map providers.
The road condition data refers to a road section name of a road section corresponding to an abnormal condition area, a start point pile number (the start point pile number includes a start point pile number and a stop point pile number) corresponding to the abnormal condition area, a length of a medium-pressure vehicle section of the road section corresponding to the abnormal condition area, a traffic influence degree on the road section corresponding to the abnormal condition area, event description about the abnormal condition, predicted cancellation time for predicting cancellation of early warning and the like when abnormal conditions such as emergency, maintenance construction, toll station abnormality, abnormal weather and the like occur.
The intermodulation data comprises: the vehicle flow rate C of the vehicle type, the average vehicle speed V, the occupancy Q, the distance S between adjacent detection devices and the like.
The doorway traffic data includes: the traffic volume of the entrance and the exit, the license plate information, the time for the vehicle to enter the high-speed card taking, the time for the vehicle to go out the high-speed payment and card reading, the rod lifting time of the charge barrier machine and the like.
The congestion status data is provided by a map provider, and includes: the congestion road name, the longitude and latitude, the average vehicle speed, the congestion state (normal, slow running and blocked), and the congestion state length. The data acquisition and updating time is 3 minutes/time, and various databases are established.
Step S102, judging whether the road condition data, the traffic dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judgment conditions or not respectively for each road section.
In this step, it may be determined whether the road condition data satisfies the corresponding preset congestion determination condition, whether the inter-modulation data satisfies the corresponding preset congestion determination condition, whether the entrance/exit traffic data satisfies the corresponding preset congestion determination condition, and whether the congestion status data satisfies the corresponding preset congestion determination condition, respectively.
Step S103, if the road condition data, the traffic data, the entrance/exit traffic data or the congestion state data of any road section meet the corresponding congestion judgment condition, determining that the road section is congested and giving out early warning on the electronic map and a preset road network diagram.
In the embodiment of the invention, preset electronic map data can be acquired, a traffic GIS-T in the electronic map data adopts an international general WGS84 coordinate system, an electronic map is established according to the electronic map data, and the electronic map is abstracted to obtain the road network sketch map.
In practical application, the early warning prompt is carried out in a page popping mode and/or a sound effect mode. The warning on the electronic map and the preset road network diagram may be a warning on the electronic map and the road network diagram in a manner of warning in a manner different from other normal road segments, for example, a road segment in which congestion occurs is displayed with a prominent color (the color is different from the color of the normal road segment). For example: the traffic jam state data can be respectively expressed by green, yellow and red colors according to three states of 'unblocked, slow running and blocked', and is displayed in a thematic map form on a GIS-T map and a road network simplified diagram, and the road network running state can be displayed more clearly and more intuitively through the color identification.
In the embodiment of the invention, before the electronic map and the preset road network diagram send out the early warning, the early warning information can be pushed to relevant managers, and the relevant managers can compare data by combining video data, comprehensively study and judge, release information when the data are consistent, cancel the early warning when the data are inconsistent, and form an operation state database.
The embodiment of the invention adopts the principle of 'first identification and then early warning', so that some false information is avoided being given to workers, and the working efficiency is reduced. When the real-time traffic jam state or road condition changes are judged, the system adopts a pop-up window with sound effect reminding to push the early warning information to a main page, automatically calls out the road network video monitoring data, combines related information to study and judge, and utilizes a publishing function to publish the information after study and judgment.
The method can acquire the road section information of each road section in the preset electronic map, wherein the road section information comprises the following steps: road condition data of a road section, traffic data of vehicles running on the road section, access and exit traffic data of the road section and congestion state data provided by a map provider; then, respectively judging whether the road condition data, the traffic dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judgment conditions or not for each road section; and if the road condition data, the traffic data, the entrance/exit traffic data or the congestion state data of any road section meet the corresponding congestion judgment condition, finally determining that the road section is congested and giving out early warning on the electronic map and a preset road network diagram.
By the technology provided by the invention, the acquisition precision and timeliness of the running state data of the expressway network can be effectively improved, the early warning precision of congested road sections is further improved, support is provided for traffic dispersion and emergency command of highway management departments, and guarantee is provided for safe and smooth travel of the public.
In another embodiment of the present invention, as shown in fig. 2, the determining whether the traffic data satisfies the corresponding predetermined congestion determining condition includes:
step S201, after a preset time interval, updating the traffic data of each road segment, where the traffic data includes: road section name, start and stop point pile number, length of a vehicle pressing section, traffic influence degree, event description and predicted cancellation time;
in the embodiment of the invention, abnormal data such as emergency, toll station abnormity, maintenance construction, abnormal weather and the like of a highway management department and a road section operation management unit can be collected, and a road condition information database is established.
Step S202, judging whether the road section name or the start and stop point pile number before updating is in the updated road condition data;
if the road section name or the start and stop point stake number before updating is in the updated road condition data, step S203, judging whether the length of the vehicle pressing section before updating, the traffic influence degree, the event description or the predicted cancellation time is not in the updated road condition data; if not, step S204, sending out early warning, and if the two are located, ignoring;
and step S204, sending out an early warning if the road section name and the start and stop point pile number are not in the updated road condition data before updating.
In another embodiment of the present invention, as shown in fig. 3, the determining whether the intermodulation data satisfies the corresponding preset congestion determination condition includes:
step S301, calculating the traffic volume of two adjacent inter-modulation devices according to preset traffic time, wherein the inter-modulation devices are used for collecting the inter-modulation data, and the preset traffic time is determined according to the distance between the two adjacent inter-modulation devices and a preset average speed;
in the embodiment of the invention, the data such as real-time average vehicle speed, traffic flow and the like acquired by the traffic dispatching equipment can be collected, and a traffic volume database is established. The traffic volume, the average speed, the occupancy and the like of the monitored point are collected by the traffic dispatching equipment, if the distance between adjacent equipment is far, the running state data of the road section cannot be directly collected by the traffic dispatching equipment, and at the moment, the running state between the two equipment is predicted by establishing a calculation model. And measuring and calculating the passing time according to the distance between the adjacent dispatching equipment and the free flow speed, and calculating the traffic volume ratio acquired by the front and rear dispatching equipment in the passing time, wherein if the ratio has a large difference and reaches an early warning threshold value, early warning is carried out.
Step S302, if the ratio of the traffic volume corresponding to the traffic dispatching equipment positioned at the upstream of the driving direction to the traffic volume corresponding to the traffic dispatching equipment positioned at the downstream of the driving direction is less than a preset jam threshold value, an early warning is sent out;
step S303, if the ratio is greater than a preset slow moving threshold value, and the preset slow moving threshold value is greater than the preset blocking threshold value, determining a slow moving state of the vehicle on a road section where two adjacent cross-dispatching devices are located.
In another embodiment of the present invention, as shown in fig. 4, the determining whether the entrance/exit traffic data satisfies the corresponding preset congestion determination condition includes:
step S401, obtaining traffic flow data at an outlet and an inlet of each road section;
step S402, calculating a first average time interval of two adjacent vehicles entering a road section to take cards in a preset time period and a second average time interval of the rod lifting time of a charging barrier machine after the front vehicle pays fees and the card reading time of the rear vehicle paying fees when the front vehicle leaves the road section for each road section;
step S403, if the first average time interval is smaller than a preset first time threshold and the second average time interval is smaller than a preset second time threshold, sending an early warning.
The embodiment of the invention can collect the traffic data at the entrance and the exit for congestion identification and analysis. And analyzing the traffic flow data of the entrance and exit of the toll station, the average time interval of the card taking time of the vehicles before and after entering the high speed, the average time interval of the rod lifting time of the toll gate machine after leaving the high speed front vehicle for paying and the card reading time of the rear vehicle for paying, and performing early warning when the average time interval reaches an early warning threshold value.
In another embodiment of the present invention, as shown in fig. 5, the determining whether the congestion status data satisfies the corresponding preset congestion determination condition includes:
step S501, after a preset time interval, updating congestion state data of each road segment, where the congestion state data includes: the method comprises the following steps of (1) congestion road section name, longitude and latitude, average vehicle speed, congestion state and congestion state length;
in practical application, real-time traffic jam state data achievements provided by advanced LBS positioning technology manufacturers on the market after data cleaning and mining can be collected, and the traffic jam state data comprises: longitude and latitude, average vehicle speed, congestion state, congestion length, road section name and other information, and the data receiving frequency is 3 minutes/time. Because the data only provides longitude and latitude coordinates and does not have highway pile number information, the longitude and latitude are required to be matched into a highway pile number system of highway codes and pile numbers, and in practical application, the longitude and latitude can be matched into the highway pile numbers in a fitting mode. And matching the longitude and latitude of the traffic GIS-T electronic map by extracting the longitude and latitude coordinates of the congested road section, fitting the longitude and latitude coordinates to the road section, identifying the congestion state, and establishing a road network congestion state database.
Step S502, judging whether the name or longitude and latitude of the congested road section before updating is in the updated road condition data;
if the name or longitude and latitude of the congested road section before updating is in the updated road condition data, step S503, determining whether the average vehicle speed, the congestion state or the congestion state length before updating is not in the updated road condition data; if not, sending out early warning, and if the two are located, ignoring;
and step S504, if the name or longitude and latitude of the congested road section before updating is not in the updated road condition data, an early warning is sent out.
In another embodiment of the present invention, as shown in fig. 6, there is also provided a road section operation state early warning device, including:
the obtaining module 11 obtains road section information of each road section in a preset electronic map, where the road section information includes: road condition data of a road section, traffic data of vehicles running on the road section, access and exit traffic data of the road section and congestion state data provided by a map provider;
the judging module 12 is configured to respectively judge whether the road condition data, the traffic dispatching data, the entrance/exit traffic data, and the congestion state data satisfy the preset congestion judging conditions corresponding thereto for each road segment;
and the determining module 13 is configured to determine that the road section is congested and send out an early warning on the electronic map and a preset road network diagram if the road condition data, the traffic data, the entrance/exit traffic data or the congestion state data of any road section meets the congestion judgment condition corresponding to the road section.
The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments.
In yet another embodiment of the present invention, an electronic device is further provided, which includes a memory and a processor, where the memory stores a computer program that is executable on the processor, and the processor implements the steps of the method according to the method embodiment when executing the computer program.
In yet another embodiment of the invention, a computer-readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method of the method embodiment is also provided.
The method, the device and the computer program product of the system for early warning of the running state of the road section provided by the embodiment of the invention comprise a computer readable storage medium storing program codes, instructions included in the program codes can be used for executing the method described in the previous method embodiment, and specific implementation can refer to the method embodiment and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A road section operation state early warning method is characterized by comprising the following steps:
acquiring road section information of each road section in a preset electronic map, wherein the road section information comprises: road condition data of a road section, traffic data of vehicles running on the road section, access and exit traffic data of the road section and congestion state data provided by a map provider;
judging whether the road condition data, the traffic-dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judgment conditions or not respectively for each road section; the intermodulation data comprises: the vehicle flow C, the average vehicle speed V, the occupancy Q and the distance S between adjacent detection devices of the vehicle type are determined;
if the road condition data, the traffic-dispatching data, the entrance/exit traffic data or the congestion state data of any road section meet the corresponding congestion judgment condition, determining that the road section is congested and giving out early warning on the electronic map and a preset road network diagram;
judging whether the road condition data meets the corresponding preset congestion judgment conditions or not, wherein the judging step comprises the following steps:
after a preset time interval, updating the road condition data of each road section, wherein the road condition data comprises: road section name, start and stop point pile number, length of a vehicle pressing section, traffic influence degree, event description and predicted cancellation time;
judging whether the road section name or the start and stop point pile number before updating is in the updated road condition data;
if the road section name or the start and stop point pile number before updating is located in the updated road condition data, judging whether the length of the vehicle pressing section before updating, the traffic influence degree, the event description or the predicted cancellation time is not located in the updated road condition data; if not, sending out early warning, and if the two are located, ignoring;
and if the road section name and the start and stop point pile number are not in the updated road condition data before updating, sending out early warning.
2. The road section operation state early warning method according to claim 1, wherein judging whether the intermodulation data meets a corresponding preset congestion judgment condition comprises:
calculating the traffic volume of two adjacent intermodulation devices according to preset traffic time, wherein the intermodulation devices are used for collecting the intermodulation data, and the preset traffic time is determined according to the distance between the two adjacent intermodulation devices and a preset average vehicle speed;
if the ratio of the traffic volume corresponding to the traffic dispatching equipment positioned at the upstream of the driving direction to the traffic volume corresponding to the traffic dispatching equipment positioned at the downstream of the driving direction is smaller than a preset blocking threshold value, an early warning is sent out;
and if the ratio is greater than a preset delay threshold value which is greater than the preset blocking threshold value, determining the delay state of the vehicle on the road section where the two adjacent cross-dispatching devices are located.
3. The road section operation state early warning method according to claim 2, wherein judging whether the entrance and exit traffic data meets the corresponding preset congestion judgment condition comprises:
acquiring traffic flow data at an outlet and an inlet of each road section;
calculating a first average time interval of card taking of two adjacent vehicles entering the road section within a preset time period and a second average time interval of rod lifting time of a front vehicle paying and rear vehicle paying and card reading time of a rear vehicle paying and reading time when the front vehicle paying and the rear vehicle paying leave the road section for each road section;
and if the first average time interval is smaller than a preset first time threshold and the second average time interval is smaller than a preset second time threshold, sending out early warning.
4. The road section operation state early warning method according to claim 3, wherein judging whether the congestion state data meets the corresponding preset congestion judgment condition comprises:
after a preset time interval, updating congestion state data of each road section, wherein the congestion state data comprises: the method comprises the following steps of (1) congestion road section name, longitude and latitude, average vehicle speed, congestion state and congestion state length;
judging whether the name or longitude and latitude of the congested road section before updating is in the updated road condition data;
if the name or longitude and latitude of the congested road section before updating is in the updated road condition data, judging whether the average vehicle speed, the congestion state or the congestion state length before updating is not in the updated road condition data; if not, sending out early warning, and if the two are located, ignoring;
and if the name or longitude and latitude of the congested road section are not located in the updated road condition data before updating, sending out early warning.
5. The section operation state warning method according to any one of claims 1 to 4, characterized by further comprising:
acquiring preset electronic map data;
establishing an electronic map according to the electronic map data;
and abstracting the electronic map to obtain the road network sketch map.
6. The road segment operation state early warning method according to claim 5, characterized by further comprising:
and carrying out early warning prompt in a page pop-up mode and/or a sound effect mode.
7. A road section running state early warning device, its characterized in that includes:
the acquisition module acquires road section information of each road section in a preset electronic map, wherein the road section information comprises: road condition data of a road section, traffic data of vehicles running on the road section, access and exit traffic data of the road section and congestion state data provided by a map provider;
the judging module is used for respectively judging whether the road condition data, the traffic dispatching data, the entrance and exit traffic data and the congestion state data meet corresponding preset congestion judging conditions or not according to each road section;
the determining module is used for determining congestion of the road section and giving out early warning on the electronic map and a preset road network simplified diagram if road section information of any road section meets corresponding congestion judging conditions;
judging whether the road condition data meets the corresponding preset congestion judgment conditions or not, wherein the judging step comprises the following steps:
after a preset time interval, updating the road condition data of each road section, wherein the road condition data comprises: road section name, start and stop point pile number, length of a vehicle pressing section, traffic influence degree, event description and predicted cancellation time;
judging whether the road section name or the start and stop point pile number before updating is in the updated road condition data;
if the road section name or the start and stop point pile number before updating is located in the updated road condition data, judging whether the length of the vehicle pressing section before updating, the traffic influence degree, the event description or the predicted cancellation time is not located in the updated road condition data; if not, sending out early warning, and if the two are located, ignoring;
and if the road section name and the start and stop point pile number are not in the updated road condition data before updating, sending out early warning.
8. An electronic device comprising a memory and a processor, wherein the memory stores a computer program operable on the processor, and wherein the processor implements the steps of the method of any of claims 1 to 6 when executing the computer program.
9. A computer-readable medium having non-volatile program code executable by a processor, wherein the program code causes the processor to perform the method of any of claims 1-6.
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| CN109461303B (en) * | 2018-10-30 | 2021-01-26 | 北京恒达时讯科技股份有限公司 | Traffic congestion state acquisition method and device |
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