CN113132939A - Road traffic condition information acquisition method, device, equipment and storage medium - Google Patents

Road traffic condition information acquisition method, device, equipment and storage medium Download PDF

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Publication number
CN113132939A
CN113132939A CN201911412334.9A CN201911412334A CN113132939A CN 113132939 A CN113132939 A CN 113132939A CN 201911412334 A CN201911412334 A CN 201911412334A CN 113132939 A CN113132939 A CN 113132939A
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China
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change rate
signal intensity
target
intensity change
road traffic
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CN201911412334.9A
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CN113132939B (en
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黄恩民
黄承基
赵小溪
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China Mobile Communications Group Co Ltd
China Mobile Chengdu ICT Co Ltd
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China Mobile Communications Group Co Ltd
China Mobile Chengdu ICT Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • 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
    • 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
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/012—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from other sources than vehicle or roadside beacons, e.g. mobile networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention discloses a road traffic condition information acquisition method, a road traffic condition information acquisition device, road traffic condition information acquisition equipment and a storage medium. The method for acquiring the road traffic condition information comprises the following steps: acquiring the signal intensity of a communication signal between a target base station and a mobile station on a target road within a preset time period; determining the signal intensity change rate of the mobile station which establishes communication connection with the target base station according to the preset time period and the signal intensity; screening the signal intensity change rate of the mobile station which is in the driving state and establishes communication connection with the target base station from the signal intensity change rate to obtain a target signal intensity change rate; and determining road traffic condition information according to the target signal intensity change rate. According to the embodiment of the invention, the traffic condition information of various roads with higher accuracy can be obtained, so that more timely, accurate and comprehensive road condition information is provided for the traffic of vehicles.

Description

Road traffic condition information acquisition method, device, equipment and storage medium
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method, a device, equipment and a storage medium for acquiring road traffic condition information.
Background
With the rapid development of national economy, the number of vehicles on roads is rapidly increased, the traffic pressure is multiplied, and how to acquire the road traffic condition in time becomes a problem which needs to be solved urgently. In the prior art, traffic information acquisition equipment is generally used for collecting traffic information of vehicles to obtain traffic flow information of roads, and then traffic condition information of the roads is obtained through calculation.
Generally, traffic information acquisition equipment adopts a ring-shaped induction coil, a microwave detector, a video monitoring system and the like. However, these traffic information collection devices are susceptible to factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution, or environment, and cannot ensure the accuracy of obtaining the road traffic condition information.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for acquiring road traffic condition information, which can improve the accuracy of acquiring the road traffic condition information.
In one aspect, an embodiment of the present invention provides a method for acquiring road traffic status information, where the method includes:
acquiring the signal intensity of a communication signal between a target base station and a mobile station on a target road within a preset time period;
determining the signal intensity change rate of the mobile station which establishes communication connection with the target base station according to the preset time period and the signal intensity;
screening the signal intensity change rate of the mobile station which is in the driving state and establishes communication connection with the target base station from the signal intensity change rate to obtain a target signal intensity change rate;
and determining road traffic condition information according to the target signal intensity change rate.
On the other hand, an embodiment of the present invention provides a road traffic condition information obtaining apparatus, including:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring the signal intensity of a communication signal between a target base station and a mobile station on a target road within a preset time period;
a first determining module, configured to determine, according to the preset time period and the signal strength, a signal strength change rate of the mobile station that establishes a communication connection with the target base station;
the screening module is used for screening the signal intensity change rate of the mobile station which is in the driving state and establishes communication connection with the target base station from the signal intensity change rate to obtain a target signal intensity change rate;
and the second determining module is used for determining road traffic condition information according to the target signal intensity change rate.
In another aspect, an embodiment of the present invention provides a road traffic condition obtaining device, where the device includes: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements the method for obtaining road traffic condition information as described in any one of the above.
In still another aspect, an embodiment of the present invention provides a computer storage medium, where computer program instructions are stored, and when executed by a processor, the computer program instructions implement the method for acquiring road traffic condition information according to any one of the above items.
According to the method, the device, the equipment and the computer storage medium for acquiring the road traffic condition information, provided by the embodiment of the invention, the signal intensity of a communication signal between a target base station and a mobile station in a preset time period is acquired, the signal intensity change rate of the mobile station in communication connection with the target base station is determined, then the signal intensity change rate of the mobile station in a driving state in communication connection with the target base station is screened from the signal intensity change rate to obtain the target signal intensity change rate, and the road traffic condition information can be determined according to the target signal intensity change rate. The base station can basically and completely cover various roads such as a main road, a branch road, a small road and the like, can meet the requirement that each base station acquires the mobile station information of one main road, and has stable and accurate mobile station information acquisition mode, and is not easily influenced by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution or environment. The target signal strength change rate is substantially similar to a change value of the moving speed of the mobile station. Therefore, by adopting the method, the device, the equipment and the computer storage medium for acquiring the road traffic condition, provided by the embodiment of the invention, the traffic condition information of various roads with higher accuracy can be acquired, so that more timely, accurate and comprehensive road condition information is provided for vehicle traffic.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a road traffic condition information acquisition system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for acquiring road traffic condition information according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a road traffic condition information acquisition device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a road traffic condition information acquisition device according to another embodiment of the present invention;
FIG. 5 is a diagram illustrating a resource pool structure according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for acquiring road traffic condition information according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a road traffic condition acquisition device according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In order to solve the prior art problems, embodiments of the present invention provide a method, an apparatus, a device, and a computer storage medium for acquiring road traffic status information.
Fig. 1 is a schematic structural diagram illustrating a system for acquiring road traffic condition information according to an embodiment of the present invention. As shown in fig. 1, the system for acquiring road traffic condition information includes a mobile station 100, a target base station 200, and a road traffic condition information acquiring apparatus 300 that are wirelessly connected. In this system, the target base station 200 may be a base station whose signal can cover the target road, and the mobile station 100 may be a user terminal, such as a mobile phone or a vehicle-mounted communication terminal, which can cover the signal of the target base station 200 and which establishes a two-way wireless telephone circuit with the base station to perform a call. The road traffic condition information acquiring device 300 determines the signal intensity change rate of the mobile station 100 in communication connection with the target base station 200 by acquiring the signal intensity of the communication signal between the target base station 200 and the mobile station 100 within a preset time period, and screens the signal intensity change rate of the mobile station 100 in a driving state in communication connection with the target base station 200 from the signal intensity change rate to obtain a target signal intensity change rate; and then determining road traffic condition information according to the target signal intensity change rate.
In the prior art, traffic information of vehicles is collected by adopting traffic information collection equipment, so that the traffic information collection equipment is not only easily influenced by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution, environment, installation cost and the like, but also limited by installation coverage areas of the equipment. Generally, these traffic information collecting devices are mainly installed in key trunk sections, and are limited by installation cost and equipment cost, and no traffic information collecting device is installed on some branches and small roads, so that the road traffic condition information of this part is unknown. Under the condition that a main road of emergency rescue vehicles such as emergency vehicles and the like is congested, a mode of avoiding congestion around a small road is usually considered, however, the traffic condition of the road cannot be obtained in time because the small road is not provided with traffic information acquisition equipment, and the emergency rescue vehicles cannot move ahead without trade under the condition that the specific traffic condition is unknown; therefore, the existing road traffic condition acquisition system cannot meet the use requirement.
The road traffic condition information acquisition system provided by the invention is based on signal acquisition of the target base station and the mobile station on the target road, and is different from the acquisition of vehicle information by using traffic information acquisition equipment. The base stations utilized by the invention can be 3G or 4G base stations and the like, the base stations can basically and completely cover the main road and the branch road, the condition that each base station acquires the mobile station information of one main road can be met, the mode that the base stations acquire the mobile station information is stable and accurate, the mobile station information is not easily influenced by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution or environment and the like, the accuracy of finally acquired traffic condition information can be high, and timely and accurate road condition information is provided for vehicle traffic. After the emergency rescue vehicle or other vehicles acquire the traffic condition information of each main road or branch road and the like, the optimal traffic mode can be selected to move forward.
The method for acquiring road traffic condition information according to the present invention is applicable to the apparatus for acquiring road traffic condition information, and the method for acquiring road traffic condition information according to the present invention will be first described below.
Fig. 2 is a schematic flow chart illustrating a method for acquiring road traffic condition information according to an embodiment of the present invention. As shown in fig. 1, the road traffic condition information acquisition method provided by the present embodiment may include S201, S202, S203, and S204.
S201, acquiring the signal intensity of a communication signal between a target base station and a mobile station on a target road in a preset time period.
In the embodiment of the present invention, in order to obtain the road traffic condition information on a certain road, the road is taken as a target road, and a base station whose signal coverage area is mainly the road is taken as a target base station. The base station is a public mobile communication base station, and a radio transceiver station for information transmission between the base station and equipment such as a mobile phone terminal and the like through a mobile communication switching center in a certain radio coverage area. The mobile station may be a user terminal, such as a mobile phone, a vehicle-mounted communication terminal, or the like, which is communicatively connected to the base station. The preset time period may be 1s, 5s, 10s, 30s, 1min, or the like. When the mobile station enters the signal coverage area of the target base station, the mobile station communicates with the target base station, the signal strength of the communication signal comprises transmitting power and receiving power, and the signal strength can change along with the change of the distance between the target base station and the mobile station.
S202, determining the signal intensity change rate of the mobile station which establishes communication connection with the target base station according to the preset time period and the signal intensity.
After the signal strength within the preset time period is obtained, a variation curve of the signal strength within the preset time period can be drawn, and the signal strength variation rate of the mobile station is determined according to the variation of the signal strength with time. The state of the mobile station can be evaluated according to the signal intensity change rate of the mobile station, the mobile station is usually carried about, and the state of the mobile station can be in a driving state, a staying state, a walking state and the like.
S203, screening the signal intensity change rate of the mobile station which is in the driving state and is in communication connection with the target base station from the signal intensity change rate to obtain the target signal intensity change rate.
In order to accurately obtain the traffic condition information of the road, mobile stations in a resident state and mobile stations in a walking state need to be filtered, and mobile stations in a driving state outside the target road and in communication connection with the target base station need to be filtered, so as to obtain the mobile stations in the driving state on the target road through screening, and further obtain a target signal strength change rate, so as to evaluate vehicles in the driving state on the target road. Specific screening methods will be described in detail below.
And S204, determining road traffic condition information according to the target signal intensity change rate.
The traffic condition of the road is determined according to the signal intensity change rate of the mobile station in the driving state, so that more accurate traffic state information is obtained, and convenience is provided for vehicle traffic. The road traffic condition information includes, but is not limited to, one or more of road traffic grade information and signal light indication law information, and a specific determination method of the road traffic condition information will be described in detail below.
The method for acquiring the road traffic condition provided by the embodiment of the invention determines the signal intensity change rate of the mobile station connected with the target base station according to the acquired signal intensity between the target base station and the mobile station on the target road, and then screens the signal intensity change rate of the mobile station in a driving state from the signal intensity change rate to obtain the target signal intensity change rate. The road traffic state information can be information such as road traffic speed, traffic grade, and the rule of indicator lights. The method for determining the road traffic condition information is not easily influenced by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution or environment and the like, and can obtain the traffic condition information of various roads with higher accuracy, thereby providing more timely, accurate and comprehensive road condition information for vehicle traffic.
In some embodiments of the present invention, in step 203, the screening, from the signal strength change rates, a signal strength change rate of a mobile station in a driving state that establishes a communication connection with the target base station to obtain a target signal strength change rate includes:
removing the signal intensity change rate of the signal intensity change rate within a first change rate after a first time length and the signal intensity change rate of the signal intensity change rate within a second change rate range within a second time length range from the signal intensity change rate to obtain the signal intensity change rate of the rest mobile stations which establish communication connection with the target base station;
removing the signal intensity change rate lower than a filtering threshold value from the signal intensity change rates of the rest mobile stations to obtain a target signal intensity change rate;
wherein the filtering threshold is a product of a peak value of the change rate of the signal intensity of the remaining mobile stations with time and a preset ratio S, wherein S is greater than 0 and less than 1.
In the embodiment of the invention, the mobile stations in the residence state comprise mobile stations of non-traffic participants, the mobile stations may be mobile stations of a large number of employees in an office building within the coverage range of a base station, and may also be mobile stations of fixed internet of things equipment, after a period of time, the signal intensity change rates of the mobile stations are within a lower change rate, and the signal intensity change rate of which the signal intensity change rate is within the first change rate after the first period of time is removed from the signal intensity change rates, so that the mobile stations in the residence state can be filtered. In one particular example, the first duration may be 20 minutes and the first rate of change may be 10%. The resident mobile station is removed by a direct condition filtering mode, the original data volume participating in the traffic jam state is reduced, the calculation load is reduced, and the real-time performance and the accuracy of calculation are improved. Especially, in places with large access quantity of the resident targets such as office buildings, shopping malls or internet of things equipment in urban areas, the resident targets are removed in a strategy direct condition filtering mode, and the original data quantity participating in traffic jam states can be effectively reduced.
In the embodiment of the invention, the mobile stations in the walking state are mainly mobile stations in low-speed motion and mainly comprise mobile stations of non-traffic participants, the mobile stations can be mobile stations of pedestrians and drivers of non-motor vehicles within the coverage range of base station signals, the signal intensity change rate of the mobile stations can fluctuate within a change rate range within a certain time length range, and the signal intensity change rate of the signal intensity change rate within a second time length range within a second change rate range is removed from the signal intensity change rate, so that the mobile stations in the walking state can be filtered. In one specific example, the second time period may range from 5 to 10 minutes, and the second rate of change may range from 2% to 5%. After the mobile station in the walking state is filtered by the filtering method, the original data volume participating in the traffic jam state can be reduced during the subsequent traffic jam state calculation, the calculation load is further reduced, and the real-time performance and the accuracy of the calculation are further improved. Particularly, in places with large pedestrian target access quantity, such as a pedestrian street, the mobile station in a walking state is directly removed through the filtering condition, and the original data quantity of the state of participating in traffic is effectively reduced.
Because the coverage area of one base station comprises a main road A and a part of other roads such as a road B, the main road A is the road mainly monitored by the base station, and the road B is the road mainly monitored by another base station, the mobile stations in the resident state and the mobile stations in the walking state can be filtered out by the filtering method of the embodiment of the invention, and the residual mobile stations can be obtained, but the mobile stations in the driving state on the other roads such as the road B can not be filtered out. Because the variation values of the driving speeds of the vehicles on the same road are basically similar, the individual speed variation values of the vehicles are similar to the overall average variation value within a period of time, and the variation values of the vehicles on other roads in the signal coverage range have larger difference with the average value, therefore, the signal intensity variation rate lower than the filtering threshold value can be removed from the signal intensity variation rates of the rest mobile stations by setting a filtering threshold value, so that the signal intensity variation rate of the mobile station in the driving state on the target road, namely the target signal intensity variation rate, is obtained, and the mobile station in the driving state on the non-main road in the range of the base station is removed. After filtering out the mobile stations in the resident state and the mobile stations in the walking state, the obtained remaining mobile stations comprise the mobile stations in the driving state on other roads such as the road B, and the signal intensity change rate lower than the filtering threshold value in the signal intensity change rates of the remaining mobile stations is filtered out, so that the signal intensity change rate of the mobile stations in the driving state on the main road A can be obtained, and the target signal intensity change rate is obtained. The mobile stations of traffic participants on non-main roads in the coverage area of the base station are removed by the direct condition filtering method provided by the embodiment of the invention, the original data volume participating in the traffic jam state is reduced, the calculation load is reduced, and the real-time performance and the accuracy of the calculation are improved.
In one specific example, the filtering threshold may be calculated by: and drawing a change rate distribution curve according to the absolute values of the signal intensity change rates of the rest mobile stations, wherein the abscissa is time, and the ordinate is the signal intensity change rate, so as to obtain the ordinate position corresponding to the peak value of the change rate, and further calculating the ordinate position of the peak value of the change rate to be reduced to the ordinate position of the preset ratio S, namely the filtering threshold. Among the remaining mobile stations, a mobile station whose signal intensity change rate is equal to or higher than the filtering threshold value may be considered as a mobile station in a driving state, and the remaining mobile stations may be judged as being in other states. In one specific example, the preset ratio S may be chosen to be 70% near the middle value.
In some embodiments of the present invention, in step 203, the mobile station is multiple, and the screening, from the signal strength change rates, a signal strength change rate of a mobile station in a driving state that establishes a communication connection with the target base station to obtain a target signal strength change rate includes:
sequencing the signal intensity change rates from large to small to obtain a first signal intensity change rate array;
screening the signal intensity change rate of the front R% from the signal intensity change rate array in a descending order to obtain a second signal intensity change rate array, wherein R% is more than 0 and less than 1;
and screening the signal intensity change rate with the signal intensity change rate higher than a change rate threshold value from the second signal intensity change rate array to obtain the target signal intensity change rate.
For some express ways, such as express ways, express ways and the like, a residential area and an office area are not configured in a part of areas, most of the coverage areas of nearby base stations are roads, and the roads only allow motor vehicles to pass through, for these base stations, the base stations can be marked as fast filtering base stations, a plurality of mobile stations in communication connection with the fast filtering base stations are provided, most of the mobile stations are mobile stations in a driving state, but also include a small part of internet of things equipment, mobile stations in a walking state and the like. The rapid filtering information may be artificially configured, and a proportional threshold value R%, 0 < R% < 1 is set, for example, 85% of the mobile stations in the coverage area of the base station are mobile stations in a driving state, and the proportional threshold value is used for filtering the internet of things devices and the mobile stations of pedestrians passing by occasionally and the like in the coverage area of the base station. The quick filtering information can further comprise a change rate threshold value, the change rate threshold value is used for effectively preventing other terminal equipment from being filtered when only the proportion threshold value is set when the number of samples is small, for example, vehicles which are likely to pass at night are few, and therefore the filtering accuracy is further improved. Therefore, when the target road is an express way, the embodiment of the present invention may sort the signal strength change rates of the mobile stations from large to small to obtain a first signal strength change rate array; then, screening the signal intensity change rate of the front R% from the first signal intensity change rate array in a descending order to obtain a second signal intensity change rate array; and screening the signal intensity change rate with the signal intensity change rate higher than the change rate threshold value from the second signal intensity change rate array to obtain the signal intensity change rate of the mobile station in a driving state on the target road, namely obtaining the target signal intensity change rate.
In some embodiments of the present invention, in step S204, the determining road traffic condition information includes determining road traffic grade information according to the target signal intensity change rate, including:
determining a target signal intensity change rate average value according to the target signal intensity change rate;
when the average change rate is not less than a Gr, determining the road traffic grade information as a first grade;
when b is greater than Gr and the average change rate is less than or equal to a Gr, determining the road traffic grade information as a second grade;
when c × Gr < the average change rate is not more than b × Gr, determining that the road traffic grade information is a third grade;
when d × Gr < the average change rate is not more than c × Gr, determining that the road traffic grade information is a fourth grade;
when the average change rate is not more than d × Gr, determining that the road traffic grade information is a fifth grade;
where Gr is a road grade coefficient, 1> a > b > c > d > 0.
According to the embodiment of the invention, the average value of the target signal intensity change rate can be determined according to the target signal intensity change rate, and road traffic grade information, such as a first grade, a second grade, a third grade, a fourth grade and a fifth grade, is determined according to the relation between the average value of the change rate and a road grade coefficient Gr, so that a user can conveniently and visually know the traffic state of a target road, such as the conditions of very smooth traffic, light congestion, medium congestion, very congestion and the like. The road grade coefficient Gr is used to correct the traffic state judgment of the roads of different grades.
In one specific example, a may take 15%, b may take 10%, c may take 7%, and d may take 4%.
In one particular example, for a road having a road grade of "express way," Gr is 120%; for roads with road grade of 'main road', Gr is 100%; for roads with the road grade of 'secondary main roads', Gr is 90%; for roads with a road class "road branch", Gr is 70%.
In some embodiments of the present invention, in step S204, the determining road traffic condition information includes determining road traffic condition information according to the target signal intensity change rate, including:
drawing a curve graph of the change rate of the target signal intensity along with the change of time, wherein the time is used as an abscissa, and the change rate of the target signal intensity is used as an ordinate;
determining a periodic variation rule of the target signal intensity variation rate according to the curve graph;
and determining signal lamp indication rule information according to the periodic variation rule, wherein the signal lamp indication rule information comprises real-time release time of the signal lamp.
The target signal intensity change rate is basically similar to the change value of the moving speed of the mobile station, the change rate curve is similar to the speed curve of the driving mobile station running on the road, and the driving speed change rate curve can show periodic change on the road provided with the signal lamp, so that the indication rule information of the signal lamp can be determined by determining the periodic change rule of the target signal intensity change rate. In order to determine the indication rule information of the signal lamp, time can be used as an abscissa, the target signal strength change rate is used as an ordinate, a graph of the target signal strength change rate changing along with time is drawn, the periodic change rule of the target signal strength change rate can be further determined according to the graph, and then the signal lamp indication rule information is determined according to the periodic change rule of the target signal strength change rate, wherein the signal lamp indication rule information can comprise real-time release time and real-time waiting time of the signal lamp. When a curve graph of the target signal intensity change rate changing along with time is drawn, if the target signal intensity change rate curve also shows a periodic change rule, the target road can be considered to be provided with the signal lamp, the release duration and the waiting duration of the signal lamp can be determined according to the periodic change rule of the target signal intensity change rate, and the real-time release duration and the real-time waiting duration of the signal lamp can be determined according to the relation between the release duration and the waiting duration and the real-time. Because most of the existing traffic signal lamps are controlled off-line, the traffic information platform cannot acquire the indication state of the signal lamp, and the road planning of emergency rescue vehicles can only be roughly determined through the road passing condition, and the accurate arrival time cannot be obtained.
In some embodiments of the invention, the road traffic condition information is stored. After the road passing condition information is stored, the road passing condition information acquisition device can conveniently plan a line and a running speed for a user by directly utilizing the stored road passing condition information.
In some embodiments of the present invention, after step S204, that is, after determining the road traffic condition information according to the target signal intensity change rate, the method may further include:
and planning a route between a target starting point and a target end point according to the road traffic condition information to obtain a target route.
After the road traffic condition information acquisition method provided by the invention is used for obtaining the traffic condition information of different roads, a smooth line with less time consumption is planned from the target starting point to the target end point as the target line according to the target starting point and the target end point input by a user through a terminal or a platform and the information of switching among base stations. After the target route is obtained, the user can move forward according to the target route so as to avoid congested roads and improve traveling efficiency.
In some embodiments of the present invention, after step S204, that is, after determining the road traffic condition information according to the target signal intensity change rate, the method may further include:
determining a target passing speed on the target road according to the road passing condition information;
and pushing the target passing speed so that a user drives a target vehicle at the target passing speed to pass through the signal lamp within the real-time passing time of the signal lamp.
The method comprises the steps that the signal intensity change rate of a mobile station is in positive correlation with the vehicle passing speed, the existing vehicle passing speed can be evaluated according to the signal intensity change rate, after road passing condition information such as road passing grade information and signal lamp indication rule information is determined, the target passing speed of a target road can be determined according to the road passing condition information, the target passing speed refers to the suggested vehicle passing speed, the target passing speed is pushed, a user can drive the target vehicle to pass through the signal lamp within the real-time passing time of the signal lamp according to the received target passing speed, the time of waiting for the signal lamp is effectively avoided, and the efficiency and the comfort level of traveling are improved.
In some embodiments of the invention, the method further comprises:
acquiring ID information of the mobile station connected with the target base station;
and encrypting the mobile station ID information to obtain the encrypted mobile station ID information.
In the embodiment of the invention, the ID information of the mobile station can be encrypted according to an encryption algorithm such as an information digest algorithm, an MD5 encryption algorithm and the like, the encrypted content cannot be decrypted, and the specific user can not be clear even if the ID information of the mobile station recorded by a mobile station operator is combined, so that the encryption processing is carried out on the ID information of the mobile station to obtain the ID information of the mobile station in an encrypted state, so that the road traffic condition information acquisition device can only distinguish different users, and the privacy of the user is protected.
In some embodiments of the invention, the method further comprises: and acquiring the map information of the target road. The map information includes but is not limited to one or more of road information, position coordinate information of the road, road grade information, and main base station information corresponding to each road, the main base station of the road is the road in which the base station signal coverage area is, the area covering other roads is small, and the influence of other roads on the main road is reduced.
In some embodiments of the invention, the method further comprises: and acquiring base station information on the target road. The base station information includes, but is not limited to, one or more of a base station number and a base station site, a base station coverage, numbers of neighboring base stations of the base station, and a base station type.
In some embodiments of the invention, the method further comprises: and acquiring base station connection information on the target road, wherein the base station connection information comprises but is not limited to one or more of mobile station ID information, time information of the mobile station registering a certain base station and time information of the mobile station connecting with the certain base station.
In some embodiments of the invention, the method further comprises: and acquiring the information of the mobile station which is in communication connection with the base station on the target road. The mobile station information includes status information of the mobile station, history information of the mobile station, and the like; the state of the mobile station may include: su (undetermined state), Sd (driving state), St (walking state), Ss (stay state), and So (other state), the state of the mobile station can be updated in real time; the history information of the mobile station may be location information of the history status of the mobile station, for example, the mobile station having ID 1 mainly resides in the signal range of the base station a and the base station C.
In some embodiments of the invention, the method further comprises: and storing one or more of the map information, the base station connection information and the mobile station information.
Based on the method for acquiring the road traffic condition information provided by the embodiment, the application also provides a specific implementation mode of the device for acquiring the road traffic condition.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a road traffic condition obtaining device according to an embodiment of the present invention. As shown in fig. 3, the road traffic condition acquisition device provided by the present embodiment includes:
an obtaining module 301, configured to obtain a signal strength of a communication signal between a target base station and a mobile station on a target road within a preset time period;
a first determining module 302, configured to determine a signal strength change rate of the mobile station that establishes a communication connection with the target base station according to the preset time period and the signal strength;
a screening module 303, configured to screen a signal strength change rate of a mobile station in a driving state, which establishes a communication connection with the target base station, from the signal strength change rate to obtain a target signal strength change rate;
and a second determining module 304, configured to determine road traffic condition information according to the target signal intensity change rate.
The invention provides a road traffic condition acquisition device, which acquires the signal intensity of a communication signal between a target base station and a mobile station on a target road in a preset time period through an acquisition module 301, determines the signal intensity change rate of the mobile station connected with the target base station according to a first determination module 302, screens the signal intensity change rate of the mobile station in a driving state from the signal intensity change rate according to a screening module 303 to obtain the target signal intensity change rate, and then determines road traffic condition information through a second determination module 304, wherein the road traffic condition information can be road traffic speed, road traffic grade, indicator light rule information and the like. The road traffic condition acquisition device provided by the invention is not easily influenced by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution or environment and the like, and can acquire traffic condition information of various roads with higher accuracy, thereby providing more timely, accurate and comprehensive road condition information for vehicle traffic.
In some embodiments of the present invention, the obtaining module 301 may be a base station information input interface, configured to connect to a base station, and further configured to obtain base station information and base station connection information, so as to provide a favorable basis for subsequently determining the road traffic condition information. The base station information includes, but is not limited to, one or more of a base station number and a base station site, a base station coverage, numbers of neighboring base stations of the base station, and a base station type. The base station connection information includes, but is not limited to, one or more of mobile station ID information, time information when the mobile station registers with a certain base station, and time information when the mobile station connects with a certain base station.
Fig. 4 is a schematic structural diagram illustrating a road traffic condition obtaining apparatus according to another embodiment of the present invention.
Referring to fig. 4, in some embodiments of the invention, the filtering module 303 includes a resident target filtering unit 305, a pedestrian target filtering unit 306, and an other target filtering unit 307.
The camping target filtering unit 305 is used for filtering out the signal strength change rate of the mobile station within the first change rate after the first time period, i.e. for filtering out the signal strength change rate of the mobile station in the camping state. The pedestrian target filtering unit 306 is configured to filter out the signal strength change rate of the signal strength change rate between the second change rate range in the second time duration range, that is, to filter out the signal strength change rate of the mobile station in the walking state. After filtering by the resident target filtering unit 305 and the pedestrian target filtering unit 306, the signal strength change rate of the remaining mobile stations which establish communication connection with the target base station is obtained. The resident target filtering unit 305 and the pedestrian target filtering unit 306 can effectively reduce the original data volume participating in the traffic jam state, reduce the calculation load, and improve the real-time performance and accuracy of calculation.
The other target filtering unit 307 is configured to filter out a signal strength change rate lower than a filtering threshold from among the signal strength change rates of the remaining mobile stations, so as to obtain a target signal strength change rate. The remaining mobile stations include not only the mobile station in a driving state on the main road within the coverage of the base station, but also the mobile station participating in the traffic on the non-main road, and the other target filtering unit 307 is used for filtering out the signal intensity change rate of the mobile station participating in the traffic on the non-main road, so that the original data volume participating in the traffic jam state is further reduced, the calculation load is further reduced, and the real-time performance and the accuracy of the calculation are improved.
Referring to fig. 4, in some embodiments of the present invention, the screening module 303 includes a fast filtering unit 308, where the fast filtering unit 308 is configured to fast screen out a signal strength change rate in a driving state of a communication connection established with a target base station on a target road for the target base station on the target road, and the fast filtering unit 308 may include:
the sorting module 323 is configured to sort the signal intensity change rates from large to small to obtain a first signal intensity change rate array; the mobile stations in communication connection with the target base station are a plurality of mobile stations, including a mobile station in a driving state, a mobile station in a walking state and the like, but most of the mobile stations are mobile stations in a driving state, the signal intensity change rate of the mobile stations in the driving state is large, and after the mobile stations are sorted by the sorting module, the signal intensity change rate of the mobile stations most probably in the driving state can be quickly judged.
The first screening module 324 screens the signal intensity change rate of the front R% from the signal intensity change rate array in a descending order to obtain a second signal intensity change rate array, wherein R% is more than 0 and less than 1; the first screening module can basically filter out equipment such as a mobile station in a walking state through R% signal intensity change rate before screening.
The second screening module 325 screens the signal intensity change rate with the signal intensity change rate higher than the change rate threshold from the second signal intensity change rate array to obtain the target signal intensity change rate. The second screening module can effectively prevent that can not improve filterable accuracy with other terminal equipment filtering when only setting up proportion threshold value R%.
Referring to fig. 4, the second determination module 304 includes, but is not limited to, one or more of a signal light indication law information determination unit 309 and a road traffic level information determination unit 310.
The signal light indication law information determination unit 309 is used to determine the real-time release time of the signal light. The signal light indication rule information determination unit 309 includes:
a drawing module 326, configured to draw a graph of a change rate of the target signal intensity with time, where time is an abscissa and the target signal intensity change rate is an ordinate;
a third determining module 327, determining a periodic variation rule of the target signal strength variation rate according to the graph;
and a fourth determining module 328 for determining the real-time passing time of the signal lamp according to the periodic variation law.
According to the signal lamp indication rule information determining unit 309, a curve graph of the change rate of the target signal strength along with the change of time is obtained through drawing, the periodic change rule of the change rate of the target signal strength can be determined according to the curve graph of the change rate of the target signal strength, if the periodic change rule does not exist, a signal lamp is not arranged on a target road, if the periodic change rule exists, the signal lamp is arranged on the target road, the release duration and the waiting duration of the signal lamp can be determined according to the periodic change rule, and the real-time release duration and the real-time waiting duration of the signal lamp can be determined according to the relation between the release duration and the waiting duration and the real-time.
The road traffic grade information determining unit 310 is configured to determine a target signal strength change rate average value according to the target signal strength change rate, and determine a road traffic grade according to a relationship between the change rate average value and a road grade coefficient, where the determining is specifically:
when the average change rate is not less than a Gr, determining the road traffic grade information as a first grade;
when b is greater than Gr and the average change rate is less than or equal to a Gr, determining the road traffic grade information as a second grade;
when c × Gr < the average change rate is not more than b × Gr, determining that the road traffic grade information is a third grade;
when d × Gr < the average change rate is not more than c × Gr, determining that the road traffic grade information is a fourth grade;
when the average change rate is not more than d × Gr, determining that the road traffic grade information is a fifth grade;
wherein Gr is a road grade coefficient used for correcting the traffic condition judgment of roads with different grades, and 1> a > b > c > d > 0. In one specific example, a may take 15%, b may take 10%, c may take 7%, and d may take 4%.
When it is determined that the road traffic level information is the first level, the road traffic condition is considered to be very clear as L1, and in this traffic level situation, the vehicles of the road can pass through without hindrance.
When it is determined that the road traffic level information is the second level, the road traffic condition may be considered as L2 clear, in which case the vehicles of the road can pass substantially without hindrance.
When the road traffic level information is determined to be the third level, the road traffic condition can be considered to be light congestion of L3, and in the traffic level situation, the light congestion of the vehicles on the road takes 0.2-0.5 times more time than the L2 smooth level.
When the road traffic level information is determined to be the fourth level, the road traffic condition can be considered as the moderate congestion of L4, and in the traffic level situation, the vehicle of the road is moderately congested and takes 0.5-0.8 times more time than the L2 clear level.
When the road traffic level information is determined to be the fifth level, the road traffic condition can be considered to be that the road is very congested at L5, and in the traffic level, the vehicles on the road are very congested, which is 1.1 times or more time-consuming than the L2 clear level.
The road traffic grade information determining unit 310 provided by the invention divides the traffic grade of the road according to the average value of the signal intensity change rate of the communication connection between the mobile station and the base station in the driving state and in combination with a preset road grade coefficient, wherein the traffic grade can be divided into a first grade, a second grade, a third grade, a fourth grade, a fifth grade and the like, and the traffic grade can directly judge the road traffic conditions, such as the condition that L1 is very unblocked, the condition that L2 is unblocked, the condition that L3 is slightly congested, the condition that L4 is moderately congested and the condition that L5 is very congested. When the road traffic level information determining unit 301 provided by the invention evaluates the road traffic level, the traffic level of the road can be evaluated by combining the base station information and the mobile station information with the technical scheme provided by the invention without the participation of traffic information collecting equipment, and the road traffic level information determining unit has the characteristic of non-cooperation and can also evaluate the road traffic level on the road without the traffic information collecting equipment.
Referring to fig. 4, in some embodiments of the present invention, the apparatus further includes: and the target route planning module 311 is configured to plan a target route between a target starting point and a target ending point according to the road traffic condition information. According to the target route, the road with traffic jam can be avoided, and the destination can be reached in a short time. In some specific examples, the target route planning module 311 may plan the target route according to the real-time road traffic level information, the traffic light indication law information light.
Referring to fig. 4, in some embodiments of the present invention, the apparatus further includes: and the target passing speed determining module 312 is configured to determine a target passing speed on the target road according to the road passing condition information, and push the target passing speed, so that a user drives a target vehicle at the target passing speed to pass through a signal lamp within the real-time passing time of the signal lamp. When the user drives at the target passing speed determined by the target passing speed determining module 312, the time for waiting for the signal lamp can be effectively avoided, and the traveling efficiency and comfort level are improved.
The road traffic condition acquisition device provided by the embodiment of the invention is not only suitable for main roads, but also suitable for roads such as branch roads, minor roads and the like, so that the emergency rescue vehicle dispatching platform can give traffic path suggestions and traffic speed suggestions to the emergency rescue vehicle according to the target line and the target traffic speed determined by the road traffic condition acquisition device, so that the emergency rescue vehicle can quickly reach a destination through the roads such as the branch roads, the minor roads and the like under the condition that the main roads are congested, the waiting time of signal lamps is avoided, and enough rescue time is strived for.
Referring to fig. 4, in some embodiments of the present invention, the apparatus further includes: an information desensitization unit 313, configured to perform encryption processing on the obtained mobile station ID information, so as to obtain mobile station ID information in an encrypted state. The privacy of the user is protected by encrypting the ID information of the mobile station.
Referring to fig. 4, in some embodiments of the present invention, the apparatus further includes: and the information query interface 322 is used for being wirelessly connected with the terminal or the platform, receiving a query instruction sent by the terminal or the platform, and feeding back a query result to the terminal or the platform.
Referring to fig. 4, in some embodiments of the present invention, the apparatus further includes: a resource pool 314. The resource pool can be used for storing various information in other modules and units.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a resource pool according to an embodiment of the present invention. In some embodiments of the present invention, the resource pool 314 includes, but is not limited to, one or more of a map information resource pool 315, a base station metadata resource pool 316, a base station connection information resource pool 317, a target data resource pool 318, a road traffic status information resource pool 319, a signal light information resource pool 320, a fast filtering information resource pool 321.
The map information resource pool is used for storing or recording map information.
The base station metadata resource pool is used for storing or recording base station information.
The base station connection information resource pool is used for storing or recording the base station connection information.
The target data resource pool is used for storing or recording mobile station information, and the mobile station information comprises state information of the mobile station, history information of the mobile station and the like.
The road traffic condition information resource pool is used for storing or recording traffic condition information of roads, such as road traffic grade information and road traffic state information lamps, wherein the road traffic grade information can be a first grade, a second grade, a third grade, a fourth grade, a fifth grade and the like, and the road traffic state information can be L1 is very clear; l2 is unblocked; l3 light congestion; medium congestion at L4; l5 is very congested.
The signal lamp information resource pool is used for storing or recording signal lamp indication rule information, including real-time release time of the signal lamp and real-time waiting for the signal lamp.
The fast filtering information resource pool is used for marking base stations capable of fast filtering on the express way and storing or recording fast filtering configuration information, wherein the fast filtering configuration information comprises one or more of but not limited to a proportion threshold value and a change rate threshold value.
Fig. 6 shows a flow chart of a road traffic condition information acquisition method.
Referring to fig. 6, the present invention provides a method for acquiring road traffic status information, including the following steps:
s601, an acquisition module acquires base station connection information on a target road, an information desensitization unit encrypts mobile station ID information in the base station connection information to obtain encrypted mobile station ID information, and sends the encrypted mobile station ID information to the acquisition module;
s602, recording the base station connection information acquired by the acquisition module in a base station connection information resource pool, and marking the states of the mobile stations as S in a target data resource poolu(undetermined state);
s603, the resident target filtering unit filters the mobile stations in the resident state according to a preset first time long time threshold value, a first change rate and a mobile station signal intensity change rate connected with the base station, and marks the states of the mobile stations as S in the target data resource poolS(stay state);
s604, filtering the mobile stations in the walking state by the pedestrian target filtering unit according to a preset second duration range, a preset second change rate range and the signal intensity change rate of the mobile stations connected with the base station, and marking the states of the mobile stations as S in a target data resource poolt(walking state);
s605, the other target filtering units continue to filter the rest mobile stations filtered by the resident target filtering unit and the pedestrian target filtering unit, filter the signal intensity change rate of the mobile stations participating in the traffic on the non-main road in the coverage area of the target base station, and mark the mobile station state with the signal intensity change rate above the filtering threshold value as S in the target data resource poold(Driving State), remaining Mobile station State is marked So(other states);
s606, the road communication grade information determining unit is used for determining the road communication grade information according to the SdAverage value and channel of signal intensity change rate of connection between mobile station and base station (in driving state)The road grade coefficient evaluates the road traffic condition, determines the target road traffic grade information, and stores the target road traffic grade information in a road traffic condition information resource pool;
s607, the signal light indication rule information determining unit is used for determining the signal light indication rule information according to SdThe periodic change rule of the signal intensity change rate of the connection between the mobile station and the base station (in a driving state) along with time is obtained to obtain the real-time release time and the real-time waiting time of the signal lamp, and the real-time release time and the real-time waiting time are stored in a signal lamp resource pool;
s608, planning a target line between a target starting point and a target end point according to the traffic grade information of the target road, the real-time passing time and the real-time waiting time of the signal lamp, and determining the target passing speed on the target line, so that a user drives a target vehicle to pass through the signal lamp within the real-time passing time of the signal lamp at the target passing speed;
and S609, pushing the target line and the target traffic speed to a terminal or a platform.
The real-time traffic information collection method further includes a fast filtering based sub-process:
the fast filtering subprocess combines three steps of S603, S604 and S605, directly sorts the signal intensity change rate of the mobile stations connected with the base station by the fast filtering unit from large to small, selects the mobile station information with larger change rate and higher change rate than the change rate threshold value according to the proportional threshold value of the fast filtering configuration information, and marks the mobile stations as Sd(driving state).
Based on the method for acquiring the road traffic condition information provided by the embodiment, the application also provides a specific implementation mode of the computer storage medium. The computer storage medium has stored thereon computer program instructions which, when executed by a processor, implement the method of acquiring road traffic condition information as set forth in any one of the above.
Based on the method for acquiring the road traffic condition information provided by the embodiment, the application also provides a specific implementation mode of the road traffic condition acquisition equipment.
Fig. 7 is a schematic structural diagram illustrating a road traffic condition acquisition device according to an embodiment of the present invention.
Referring to fig. 7, the road traffic condition acquiring apparatus provided by the present invention may include a processor 701 and a memory 702 storing computer program instructions.
Specifically, the processor 701 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing an embodiment of the present invention.
Memory 702 may include a mass storage for data or instructions. By way of example, and not limitation, memory 702 may include a Hard Disk Drive (HDD), a floppy Disk Drive, flash memory, an optical Disk, a magneto-optical Disk, tape, or a Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 702 may include removable or non-removable (or fixed) media, where appropriate. The memory 702 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 702 is non-volatile solid-state memory. In a particular embodiment, the memory 702 includes Read Only Memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory or a combination of two or more of these.
The processor 701 realizes any one of the road traffic condition information acquisition methods in the above embodiments by reading and executing computer program instructions stored in the memory 702.
In one example, the road traffic condition acquisition device may further include a communication interface 703 and a bus 704. As shown in fig. 6, the processor 701, the memory 702, and the communication interface 703 are connected by a bus 704 to complete mutual communication.
The communication interface 703 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiment of the present invention.
The bus 704 includes hardware, software, or both that couple the components of the road traffic condition acquisition device to one another. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 704 may include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

Claims (12)

1. A road traffic condition information acquisition method is characterized by comprising the following steps:
acquiring the signal intensity of a communication signal between a target base station and a mobile station on a target road within a preset time period;
determining the signal intensity change rate of the mobile station which establishes communication connection with the target base station according to the preset time period and the signal intensity;
screening the signal intensity change rate of the mobile station which is in the driving state and establishes communication connection with the target base station from the signal intensity change rate to obtain a target signal intensity change rate;
and determining road traffic condition information according to the target signal intensity change rate.
2. The method according to claim 1, after determining the road traffic condition information according to the target signal intensity change rate, further comprising:
and planning a route between a target starting point and a target end point according to the road traffic condition information to obtain a target route.
3. The method according to claim 1, characterized in that the road traffic situation information comprises signal light indication law information,
the determining the road traffic condition information according to the target signal intensity change rate comprises the following steps:
drawing a curve graph of the change rate of the target signal intensity along with the change of time, wherein the time is used as an abscissa, and the change rate of the target signal intensity is used as an ordinate;
determining a periodic variation rule of the target signal intensity variation rate according to the curve graph;
and determining the real-time passing time of the signal lamp according to the periodic variation rule.
4. The method of claim 3, further comprising, after determining road traffic condition information according to the target signal strength change rate:
determining a target passing speed on the target road according to the road passing condition information;
and pushing the target passing speed so that a user drives a target vehicle at the target passing speed to pass through the signal lamp within the real-time passing time of the signal lamp.
5. The method according to claim 1, characterized in that the road traffic situation information comprises road traffic class information,
the determining the road traffic condition information according to the target signal intensity change rate comprises the following steps:
determining a target signal intensity change rate average value according to the target signal intensity change rate;
when the average change rate is not less than a Gr, determining the road traffic grade information as a first grade;
when b is greater than Gr and the average change rate is less than or equal to a Gr, determining the road traffic grade information as a second grade;
when c × Gr < the average change rate is not more than b × Gr, determining that the road traffic grade information is a third grade;
when d × Gr < the average change rate is not more than c × Gr, determining that the road traffic grade information is a fourth grade;
when the average change rate is not more than d × Gr, determining that the road traffic grade information is a fifth grade;
where Gr is a road grade coefficient, 1> a > b > c > d > 0.
6. The method of claim 1, wherein the screening the signal strength change rate of the mobile station in driving state, which establishes communication connection with the target base station, from the signal strength change rate to obtain a target signal strength change rate comprises:
removing the signal intensity change rate of the signal intensity change rate within a first change rate after a first time length and the signal intensity change rate of the signal intensity change rate within a second change rate range within a second time length range from the signal intensity change rate to obtain the signal intensity change rate of the rest mobile stations which establish communication connection with the target base station;
removing the signal intensity change rate lower than a filtering threshold value from the signal intensity change rates of the rest mobile stations to obtain a target signal intensity change rate;
wherein the filtering threshold is a product of a peak value of the change rate of the signal intensity of the remaining mobile stations with time and a preset ratio S, wherein S is greater than 0 and less than 1.
7. The method of claim 1, wherein the mobile station is plural,
the screening, from the signal intensity change rate, a signal intensity change rate of a mobile station in a driving state, which establishes a communication connection with the target base station, to obtain a target signal intensity change rate includes:
sequencing the signal intensity change rates from large to small to obtain a first signal intensity change rate array;
screening the signal intensity change rate of the front R% from the signal intensity change rate array in a descending order to obtain a second signal intensity change rate array, wherein R% is more than 0 and less than 1;
and screening the signal intensity change rate with the signal intensity change rate higher than a change rate threshold value from the second signal intensity change rate array to obtain the target signal intensity change rate.
8. The method of claim 1, further comprising:
and storing the road traffic condition information.
9. The method of claim 1, further comprising:
acquiring ID information of the mobile station connected with the target base station;
and encrypting the mobile station ID information to obtain the encrypted mobile station ID information.
10. A road traffic condition information acquisition apparatus, characterized by comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring the signal intensity of a communication signal between a target base station and a mobile station on a target road within a preset time period;
a first determining module, configured to determine, according to the preset time period and the signal strength, a signal strength change rate of the mobile station that establishes a communication connection with the target base station;
the screening module is used for screening the signal intensity change rate of the mobile station which is in the driving state and establishes communication connection with the target base station from the signal intensity change rate to obtain a target signal intensity change rate;
and the second determining module is used for determining road traffic condition information according to the target signal intensity change rate.
11. A road traffic condition information acquisition apparatus, characterized by comprising: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements the road traffic condition information acquisition method according to any one of claims 1-9.
12. A computer storage medium, characterized in that the computer storage medium has stored thereon computer program instructions which, when executed by a processor, implement the road traffic condition information acquisition method according to any one of claims 1 to 9.
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