CN113132939B - 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
CN113132939B
CN113132939B CN201911412334.9A CN201911412334A CN113132939B CN 113132939 B CN113132939 B CN 113132939B CN 201911412334 A CN201911412334 A CN 201911412334A CN 113132939 B CN113132939 B CN 113132939B
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change rate
signal intensity
target
intensity change
information
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CN113132939A (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

Abstract

The invention discloses a road traffic condition information acquisition method, a device, equipment and a storage medium. The road traffic condition information acquisition method comprises the following steps: acquiring the signal strength of a communication signal between a target base station and a mobile station on a target road within a preset time period; determining a signal intensity change rate of the mobile station establishing 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 in a driving state which 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 vehicle traffic.

Description

Road traffic condition information acquisition method, device, equipment and storage medium
Technical Field
The present invention belongs to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for obtaining road traffic status information.
Background
Along with the rapid development of national economy, the number of vehicles on roads is rapidly increased, traffic pressure is multiplied, and how to acquire road traffic in time becomes an urgent problem to be solved. 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 traffic condition information of the roads is obtained through calculation.
Generally, the traffic information acquisition equipment adopts a ring-shaped induction coil, a microwave detector, a video monitoring system and the like. However, these traffic information collecting devices are susceptible to factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution, or environment, and the accuracy of obtaining road traffic condition information cannot be well ensured.
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 strength of a communication signal between a target base station and a mobile station on a target road within a preset time period;
determining a signal intensity change rate of the mobile station establishing 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 in a driving state which 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.
In another aspect, an embodiment of the present invention provides a road traffic condition information acquiring apparatus, including:
the acquisition module is used for acquiring the signal strength of the communication signal between the target base station and the mobile station on the target road within a preset time period;
a first determining module, configured to determine a rate of change of signal strength of the mobile station that establishes a communication connection with the target base station according to the preset time period and the signal strength;
the screening module is used for screening the signal intensity change rate of the mobile station in a driving state, which is in 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 strength change rate.
In still another aspect, an embodiment of the present invention provides a road traffic situation obtaining apparatus, including: a processor and a memory storing computer program instructions;
The processor, when executing the computer program instructions, implements the road traffic situation information acquisition method as described in any one of the above.
In yet another aspect, an embodiment of the present invention provides a computer storage medium having stored thereon computer program instructions which, when executed by a processor, implement a road traffic situation information obtaining method according to any one of the above.
The method, the device, the equipment and the computer storage medium for acquiring the road traffic information provided by the embodiment of the invention are used for determining the signal intensity change rate of the mobile station which establishes communication connection with the target base station by acquiring the signal intensity of the communication signal between the target base station and the mobile station in a preset time period, then screening the signal intensity change rate of the mobile station which establishes communication connection with the target base station and is in a driving state from the signal intensity change rate to obtain the target signal intensity change rate, and determining the road traffic information according to the target signal intensity change rate. The base station can basically cover various roads such as a main road, a branch road, a small road and the like, so that the condition that each base station collects mobile station information of one main road can be met, the mode that the base station obtains the mobile station information is stable and accurate, and the mobile station information 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 the change value of the moving speed of the mobile station. Therefore, by adopting the road traffic situation acquisition method, the device, the equipment and the computer storage medium provided by the embodiment of the invention, traffic situation information of various roads with higher accuracy can be obtained, so that more timely, accurate and comprehensive road condition information is provided for vehicle traffic.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed to be used in the embodiments of the present invention will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
Fig. 1 is a schematic diagram of a road traffic condition information acquisition system according to an embodiment of the present invention;
fig. 2 is a flowchart of a road traffic condition information acquiring method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a road traffic condition information acquiring apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a road traffic condition information acquiring apparatus according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of a resource pool according to an embodiment of the present invention;
FIG. 6 is a flowchart of a road traffic status information acquiring method according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a road traffic situation acquisition apparatus provided in 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 the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit 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 invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 like elements in a process, method, article or apparatus that comprises the element.
In order to solve the problems in the prior art, the embodiment of the invention provides a method, a device, equipment and a computer storage medium for acquiring road traffic condition information.
Fig. 1 is a schematic diagram of a road traffic condition information acquisition system according to an embodiment of the present invention. As shown in fig. 1, the road traffic information acquisition system includes a mobile station 100, a target base station 200, and a road traffic information acquisition device 300 that are connected wirelessly. In this system, the target base station 200 is a base station whose signal can cover a target road, and the mobile station 100 may be a user terminal, such as a mobile phone, a car-mounted communication terminal, or the like, which can be covered by the signal of the target base station 200, and a device for establishing a two-way wireless telephone circuit with the base station and performing a call. The road traffic information obtaining device 300 obtains a target signal strength change rate by obtaining a signal strength of a communication signal between a target base station 200 and a mobile station 100 in a preset time period, determining a signal strength change rate of the mobile station 100 establishing a communication connection with the target base station 200, and screening the signal strength change rate of the mobile station 100 in a driving state establishing a communication connection with the target base station 200 from the signal strength change rate; and then determining road traffic condition information according to the target signal intensity change rate.
In the prior art, traffic information acquisition equipment is adopted to collect traffic information of vehicles, so that the traffic information 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 the installation coverage areas of the equipment. Typically, these traffic information collecting devices are installed mainly in critical backbone segments, and are limited by installation costs and equipment costs, and are not installed on some branches and small roads, so that the road traffic information of this part is unknown. Under the condition that a main road is congested, emergency rescue vehicles such as emergency ambulances usually consider a mode of avoiding congestion around a small road, however, the traffic information acquisition equipment is not arranged on a small road, so that road traffic conditions cannot be obtained in time, and the emergency rescue vehicles cannot trade and travel under the condition that specific traffic conditions are unknown; therefore, the existing road traffic situation collection 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 cover main roads and branch roads, the condition that each base station collects mobile station information of a main road can be satisfied, the mode that the base station obtains 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, and the finally obtained traffic condition information has high accuracy, so that more timely and accurate road condition information is provided for vehicle traffic. The emergency rescue vehicle or other vehicles can select the optimal passing mode to go forward after acquiring the traffic condition information of the roads such as each trunk road or branch road.
The road traffic condition information acquisition method provided by the invention can be applied to the road traffic condition information acquisition device, and the road traffic condition information acquisition method provided by the embodiment of the invention is described below.
Fig. 2 is a flowchart of a road traffic condition information acquiring method 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 strength of a communication signal between a target base station and a mobile station on a target road within a preset time period.
In the embodiment of the 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 with a signal coverage area mainly being the road is taken as a target base station. The base station is a public mobile communication base station, and in a certain radio coverage area, the base station is a radio transceiver station for transmitting information with equipment such as a mobile phone terminal and the like through a mobile communication switching center. The mobile station may be a user terminal, such as a mobile phone, a vehicle communication terminal, or the like, communicatively coupled to the base station. The preset time period may be a time period of 1s, 5s, 10s, 30s, 1min, etc. When a mobile station enters the signal coverage area of a target base station, communication is performed between the mobile station and the target base station, the signal strength of a communication signal comprises a transmitting power and a receiving power, and the signal strength changes along with the change of the distance between the target base station and the mobile station.
S202, determining the change rate of the signal intensity of the mobile station establishing communication connection with the target base station according to the preset time period and the signal intensity.
After the signal intensity in the preset time period is obtained, a change curve of the signal intensity in the preset time period can be drawn, and the change rate of the signal intensity of the mobile station is determined according to the change of the signal intensity along with time. The state of the mobile station can be estimated according to the signal intensity change rate of the mobile station, the mobile station is usually carried with the user, and the state of the mobile station can be in a driving state, a resident state, a walking state and the like.
And S203, screening the signal intensity change rate of the mobile station in a driving state, which 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 acquire traffic information of a road, it is necessary to filter out a mobile station in a resident state and a mobile station in a traveling state, and filter out a mobile station in a driving state, which is in communication connection with a target base station and is located outside the target road, so as to screen out the mobile station in the driving state on the target road, and further obtain a target signal strength change rate, so as to evaluate a vehicle in the driving state on the target road. Specific screening methods will be described in detail below.
S204, determining road traffic condition information according to the target signal strength 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 information includes, but is not limited to, one or more of road traffic class information and traffic light indication rule information, and a specific determination method of the road traffic information will be described in detail below.
According to the road traffic situation acquisition method provided by the embodiment of the invention, the signal intensity change rate of the mobile station connected with the target base station is determined according to the acquired signal intensity between the target base station and the mobile station on the target road, and the signal intensity change rate of the mobile station in a driving state is screened 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 class, indicator light rule and the like. The method for determining the road traffic condition information is not easily affected by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution or environment, and the like, and can obtain 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 the signal strength change rate of the 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 includes:
removing the signal intensity change rate of which the signal intensity change rate is within the first change rate after a first time period from the signal intensity change rates, and obtaining the signal intensity change rate of the rest mobile stations which establish communication connection with the target base station in a second time period range, wherein the signal intensity change rate of which the signal intensity change rate is between the second change rate ranges;
removing the signal intensity change rate lower than the filtering threshold value from the signal intensity change rates of the rest mobile stations to obtain a target signal intensity change rate;
the filtering threshold is a product of a peak value of a time-varying signal intensity change rate of the remaining mobile stations and a preset ratio S, wherein S is more than 0 and less than 1.
In the embodiment of the invention, the mobile stations in the resident state comprise mobile stations of non-traffic participants, the mobile stations may be mobile stations of a large number of staff in an office building in the coverage area of a base station, and may also be mobile stations of fixed internet of things equipment, after a period of time, the signal strength change rate of the mobile stations may be in a lower change rate, and from the signal strength change rate, the signal strength change rate after a first period of time is removed from the signal strength change rate, and the mobile stations in the resident state can be filtered out. 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, so that the original data quantity participating in the traffic jam state is reduced, the calculation load can be reduced, and the real-time performance and accuracy of calculation are improved. Particularly, in places with larger access quantity of resident targets such as urban office buildings, markets or Internet of things equipment, the resident targets are removed by adopting the strategy to directly filter conditions, so that the original data quantity participating in the traffic jam state can be effectively reduced.
In the embodiment of the invention, the mobile station in the walking state is mainly a mobile station in low-speed motion and mainly comprises mobile stations of non-traffic participants, the mobile stations can be mobile stations of pedestrians and drivers of non-motor vehicles in the coverage range of the base station signals, the signal intensity change rate of the mobile stations can fluctuate in a change rate range in a certain time range, and the signal intensity change rate in the second time range is removed from the signal intensity change rate, so that the mobile station in the walking state can be filtered out. 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 quantity participating in the traffic congestion state can be reduced during the calculation of the subsequent traffic congestion state, the calculation load is further reduced, and the real-time performance and accuracy of the calculation are further improved. Particularly, in places with large access to pedestrian targets such as pedestrian streets, the mobile stations in a walking state are directly removed through the filtering condition, so that the amount of raw data in a traffic state is effectively reduced.
The coverage area of one base station comprises a part of other roads such as a road B and the like besides the main road A, wherein the main road A is a road mainly monitored by the base station, and the road B is a road mainly monitored by another base station. Because the change values of the driving speeds of the vehicles on the same road are basically similar, the individual speed change values of the vehicles are similar to the overall average change value within a period of time, and the vehicle change values of other roads in the signal coverage range are greatly different from the average value, the signal strength change rate lower than the filtering threshold can be removed from the signal strength change rate of the residual mobile stations by setting the filtering threshold, so that the signal strength change rate of the mobile stations in driving states on the target road, namely the target signal strength change rate, is obtained, and the removal of the mobile stations in driving states on non-main roads in the base station range is realized. After filtering out the mobile station in the resident state and the mobile station 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 of the remaining mobile stations lower than the filtering threshold value in the signal intensity change rate 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 of 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, so that the amount of raw data participating in traffic jam states is reduced, the calculation load can be reduced, and the real-time performance and accuracy of calculation are improved.
In a specific example, the filtering threshold may be calculated by: and drawing a change rate distribution curve according to the absolute value of the signal intensity change rate of the rest mobile stations, wherein the abscissa is time, the ordinate is the signal intensity change rate, obtaining the ordinate position corresponding to the change rate peak value, and further calculating the ordinate position of the change rate peak value to be reduced to the ordinate position of the preset ratio S, namely the filtering threshold value. Among the remaining mobile stations, a mobile station whose signal strength change rate is equal to or higher than the filtering threshold value may be regarded as a mobile station in a driving state, and the remaining mobile stations may be determined to be in other states. In one specific example, the preset ratio S may be chosen to be 70%, approaching the intermediate value.
In some embodiments of the present invention, in step 203, the selecting, from the signal strength change rates, the signal strength change rate of the mobile station in the driving state that establishes a communication connection with the target base station to obtain the 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 previous R% from the signal intensity change rate array according to the sequence from large to small 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 of which the signal intensity change rate is 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 expressways, such as expressways, expressways and the like, in which residential areas and office areas are not configured in part of areas, a majority of coverage areas of nearby base stations are highways, and only vehicles are allowed to pass through by the highways, the base stations can be marked as rapid filtering base stations, a plurality of mobile stations which are in communication connection with the rapid filtering base stations are mostly mobile stations in a driving state, but also comprise a small part of internet of things equipment, mobile stations in a walking state and the like. The rapid filtering information can be artificially prepared, a proportion threshold R% is set, and the proportion threshold R% is more than 0 and less than 1, for example, 85% of mobile stations in the coverage area of the base station are mobile stations in driving state, and the proportion threshold is used for filtering internet of things equipment and mobile stations of occasionally passing pedestrians and the like which are arranged in the coverage area of the base station. The rapid filtering information can further comprise a change rate threshold value, wherein the change rate threshold value is used for effectively preventing other terminal equipment from being filtered when the number of samples is small, for example, vehicles which can pass at night are small, and the filtering accuracy is further improved. Therefore, when the target road is a expressway, the embodiment of the invention can sort the signal intensity change rates of all the mobile stations from large to small to obtain a first signal intensity change rate array; then screening the signal intensity change rate of the previous R% from the first signal intensity change rate array according to the sequence from large to small to obtain a second signal intensity change rate array; and screening the signal intensity change rate of which the signal intensity change rate is higher than a 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 road traffic information includes road traffic class information, and the determining the road traffic information according to the target signal strength change rate includes:
determining a target signal intensity change rate average value according to the target signal intensity change rate;
when the average value of the change rate is more than or equal to a Gr, determining the road traffic grade information as a first grade;
when b×gr < the change rate average value is less than or equal to a×gr, determining the road traffic class information as a second class;
when c×gr < the change rate average value is less than or equal to b×gr, determining the road traffic class information as a third class;
when d is less than the average value of the change rate and less than or equal to c, determining the road traffic grade information as a fourth grade;
when the change rate average value is less than or equal to d×gr, determining that the road traffic class information is a fifth class;
where Gr is road class 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 the road traffic grade information such as the first grade, the second grade, the third grade, the fourth grade and the fifth grade is determined according to the relation between the average value of the change rate and the road grade coefficient Gr, so that a user can intuitively know the traffic state of a target road, such as the conditions of very smooth, unimpeded, slight congestion, medium congestion, very congestion and the like. The road class coefficient Gr is used for correcting traffic state judgment of roads of different classes.
In one specific example, a may be 15%, b may be 10%, c may be 7%, and d may be 4%.
In one specific example, for a road class "expressway" road, gr is 120%; for a road class "arterial road" road, gr is 100%; for a road class of "secondary trunk road" road, gr is 90%; for a road class "by-road" road, gr is 70%.
In some embodiments of the present invention, in step S204, the road traffic condition information includes traffic light indication rule information, and the determining the road traffic condition information according to the target signal strength change rate includes:
drawing a graph of the change rate of the target signal strength along with the change of time, wherein the time is taken as an abscissa, and the change rate of the target signal strength is taken as an ordinate;
determining a periodic variation rule of the target signal intensity variation rate according to the 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.
Since the change rate of the target signal strength is substantially similar to the change value of the moving speed of the mobile station, the change rate curve approximates to the speed curve of the mobile station in driving state running on the road, and the driving speed change rate curve can show periodic change on the road provided with the signal lamp, the indication rule information of the signal lamp can be determined by determining the periodic change rule of the change rate of the target signal strength. In order to determine indication rule information of the signal lamp, time is taken as an abscissa, the target signal intensity change rate is taken as an ordinate, a graph of the change of the target signal intensity with time is drawn, a periodic change rule of the target signal intensity change rate can be further determined according to the graph, then the indication rule information of the signal lamp is determined according to the periodic change rule of the target signal intensity change rate, and the indication rule information of the signal lamp can comprise real-time release time and real-time waiting time of the signal lamp. When the graph of the change rate of the target signal strength along with the change of time is drawn, if the graph of the change rate of the target signal strength also shows a periodical change rule, the signal lamp can be considered to be arranged on the target road, the release time and the waiting time of the signal lamp can be determined according to the periodical change rule of the change rate of the target signal strength, and the real-time release time and the real-time waiting time of the signal lamp can be determined according to the relationship between the release time and the waiting time and the real-time. Because most of traffic signal lamps are controlled offline, the traffic information platform cannot acquire the indication state of the signal lamps, and road planning of emergency rescue vehicles can only be roughly determined through road traffic conditions, so that accurate arrival time cannot be obtained.
In some embodiments of the invention, the road traffic condition information is stored. After the road traffic condition information is stored, the road traffic condition information acquisition device can conveniently and directly plan a route and a running speed for a user by using the stored road traffic condition information.
In some embodiments of the present invention, after step S204, that is, after determining the road traffic information according to the target signal strength change rate, the method may further include:
and planning a route between a target starting point and a target destination 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 acquiring traffic condition information of different roads, planning a relatively unobstructed and less-used line from all roads from the target starting point to the target ending point as a target line according to the target starting point and the target ending point which are input by a user through a terminal or a platform and the information of switching between base stations. After the target line is obtained, the user can go forward according to the target line so as to avoid the congestion road and improve the travel efficiency.
In some embodiments of the present invention, after step S204, that is, after determining the road traffic information according to the target signal strength change rate, the method may further include:
Determining a target traffic speed on the target road according to the road traffic condition information;
and pushing the target passing speed 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.
Because there is positive correlation between the signal intensity change rate of the mobile station and the traffic speed of the vehicle, the current traffic speed of the vehicle can be estimated according to the signal intensity change rate, after the road traffic condition information such as road traffic grade information and signal lamp indication rule information is determined, the target traffic speed of the target road can be determined according to the road traffic condition information, the target traffic speed refers to the recommended traffic speed of the vehicle, the target traffic speed is pushed, a user can drive the target vehicle to pass through the signal lamp within the real-time release time of the signal lamp according to the received target traffic speed, the waiting time of the signal lamp is effectively avoided, and the traveling efficiency and comfort level 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 carrying out encryption processing on the mobile station ID information to obtain the mobile station ID information in an encrypted state.
In the embodiment of the invention, the ID information of the mobile station can be encrypted according to the encryption algorithms such as the information abstraction algorithm, the MD5 encryption algorithm and the like, and the encrypted content cannot be decrypted, and even if the mobile station ID information recorded by the mobile station operator is combined, the specific person of the user cannot be clarified, so that the mobile station ID information in an encrypted state is obtained by carrying out encryption processing on the mobile station ID information, 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 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 a road, road grade information, and main base station information corresponding to each road, and the main base station of the road is the road covered by the base station signal, so that the area covered by other roads is smaller, 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, a base station address, a base station coverage, a number of a neighboring base station of the base station, and a base station type.
In some embodiments of the invention, the method further comprises: base station connection information on the target road is obtained, the base station connection information including, but not limited to, one or more of mobile station ID information, time information for a mobile station to register with a base station, and time information for a mobile station to connect with a base station.
In some embodiments of the invention, the method further comprises: mobile station information is acquired that is communicatively coupled to a base station on a target path. The mobile station information includes state 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 state of the mobile station, for example, the mobile station with ID 1 resides mainly in the signal range of base station a and 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 road traffic situation information obtaining method provided by the above embodiment, the present application further provides a specific implementation manner of the road traffic situation obtaining device.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a road traffic situation acquiring device according to an embodiment of the invention. As shown in fig. 3, the road traffic situation acquisition device provided in the present embodiment includes:
an acquiring module 301, configured to acquire 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 rate of change of signal strength 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, from the signal strength change rates, the signal strength change rates of the mobile stations in a driving state that establish a communication connection with the target base station, to obtain a target signal strength change rate;
and a second determining module 304, configured to determine road traffic status information according to the target signal strength change rate.
The road traffic situation acquiring device provided by the invention 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 acquiring module 301, determines the signal intensity change rate of the mobile station connected with the target base station according to a first determining module 302, screens the signal intensity change rate of the mobile station in a driving state according to a screening module 303 from the signal intensity change rate to obtain the target signal intensity change rate, and determines road traffic situation information through a second determining module 304, wherein the road traffic situation information can be road traffic speed, road traffic grade, indicator light rule information and the like. The road traffic situation acquisition device provided by the invention is not easily affected by factors such as road surface deformation, vehicle congestion, uneven vehicle type distribution or environment, and the like, and traffic situation information of various roads with higher accuracy can be obtained, so that more timely, accurate and comprehensive road condition information is provided for vehicle traffic.
In some embodiments of the present invention, the acquiring module 301 may be a base station information input interface, which is used to connect to a base station, and may also be used to acquire base station information and base station connection information, so as to provide an advantageous basis for determining road traffic status information subsequently. The base station information includes, but is not limited to, one or more of a base station number, a base station address, a base station coverage, a number of a neighboring base station 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 for a mobile station to register with a base station, and time information for a mobile station to connect with a base station.
Fig. 4 is a schematic diagram showing a construction of a road traffic situation acquiring apparatus according to another embodiment of the present invention.
Referring to fig. 4, in some embodiments of the invention, the screening module 303 includes a resident target filtering unit 305, a pedestrian target filtering unit 306, and other target filtering units 307.
The camping object filtering unit 305 is configured to filter out the signal strength change rate within the first change rate after the first period of time, that is, to filter 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 between the second change rate ranges within the second time period 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 establishing communication connection with the target base station is obtained. Both the resident target filtering unit 305 and the pedestrian target filtering unit 306 can effectively reduce the amount of original data 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 the signal strength change rate of the remaining mobile stations that is lower than the filtering threshold, so as to obtain a target signal strength change rate. The remaining mobile stations not only include mobile stations in driving states on major roads within the coverage area of the base station, but also include mobile stations participating in traffic on non-major roads, and the other target filtering unit 307 is used for filtering out the signal intensity change rate of the mobile stations participating in traffic on the non-major roads, so as to further reduce the original data amount participating in traffic jam states, further reduce the calculation load, and improve the real-time performance and accuracy of calculation.
Referring to fig. 4, in some embodiments of the present invention, the filtering module 303 includes a rapid filtering unit 308, where the rapid filtering unit 308 is configured to rapidly filter out a signal strength change rate in a driving state of establishing a communication connection with a target base station on a target road, and the rapid filtering unit 308 may include:
a sorting module 323, configured to sort the signal strength change rates from large to small, so as to obtain a first signal strength change rate array; the plurality of mobile stations which are in communication connection with the target base station comprise a mobile station in a driving state, a mobile station in a walking state and the like, but most of the mobile stations in the driving state have large signal intensity change rates, and after being ordered by the ordering module, the signal intensity change rate of the mobile station most likely to be in the driving state can be rapidly judged.
The first filtering module 324 filters the signal intensity change rate of the previous R% from the signal intensity change rate array according to the order from the large to the small to obtain a second signal intensity change rate array, wherein 0 is less than R% < 1; the first screening module can basically filter out equipment such as a mobile station in a walking state by screening the change rate of the signal intensity of the R% before screening.
And a second screening module 325, configured to screen the signal strength change rate with the signal strength change rate higher than the change rate threshold from the second signal strength change rate array, to obtain the target signal strength change rate. The second screening module can effectively prevent that other terminal equipment cannot be filtered when only the proportion threshold R% is set, and improves the filtering accuracy.
Referring to fig. 4, the second determining module 304 includes, but is not limited to, one or more of a traffic light indication law information determining unit 309 and a road traffic class information determining unit 310.
The traffic light indication rule information determining unit 309 is configured to determine a real-time release time of the traffic light. The traffic light indication rule information determination unit 309 includes:
the drawing module 326 is configured to draw a graph of the change rate of the target signal strength with time, with time as an abscissa and the change rate of the target signal strength as an ordinate;
A third determining module 327 that determines a periodic variation law of the target signal strength variation rate according to the graph;
a fourth determining module 328 determines the real-time release time of the signal lamp according to the periodic variation law.
According to the signal lamp indication rule information determining unit 309 of the present invention, a graph of the change rate of the target signal strength with time is drawn, the periodic change rule of the change rate of the target signal strength can be determined according to the graph of the change rate of the target signal strength, if the periodic change rule does not exist, it can be considered that no signal lamp is set on the target road, if the periodic change rule exists, it can be considered that the signal lamp is set on the target road, the release time and the waiting time of the signal lamp can be determined according to the periodic change rule, and the real-time release time and the real-time waiting time of the signal lamp can be determined according to the relationship between the release time and the waiting time and the real-time.
The road traffic level information determining unit 310 is configured to determine a target signal intensity change rate average value according to the target signal intensity change rate, and determine a road traffic level according to a relationship between the change rate average value and a road level coefficient, specifically:
When the average value of the change rate is more than or equal to a Gr, determining the road traffic grade information as a first grade;
when b×gr < the change rate average value is less than or equal to a×gr, determining the road traffic class information as a second class;
when c×gr < the change rate average value is less than or equal to b×gr, determining the road traffic class information as a third class;
when d is less than the average value of the change rate and less than or equal to c, determining the road traffic grade information as a fourth grade;
when the change rate average value is less than or equal to d×gr, determining that the road traffic class information is a fifth class;
where Gr is a road class coefficient for correcting traffic conditions judgment of roads of different classes, 1> a > b > c > d >0. In one specific example, a may be 15%, b may be 10%, c may be 7%, and d may be 4%.
When the road traffic class information is determined to be the first class, the road traffic condition may be considered to be very clear at which the vehicles of the road can pass unimpeded.
When the road traffic class information is determined to be the second class, the road traffic condition may be considered as L2 clear, in which case the vehicle of the road can pass substantially unimpeded.
When the road traffic class information is determined to be the third class, the road traffic condition can be considered as L3 light congestion, and under the traffic class condition, the vehicle of the road is slightly congested, and the time is 0.2-0.5 times more than that of the L2 unblocked class.
When the road traffic class information is determined to be the fourth class, the road traffic condition can be considered to be L4 medium congestion, and under the traffic class condition, the vehicle medium congestion of the road takes 0.5-0.8 times more time than the L2 unblocked class.
When the road traffic class information is determined to be the fifth class, the road traffic condition is considered to be L5 very congested, and in this traffic class case, the vehicles of the road are very congested, which takes 1.1 times more time than the L2 clear class.
The road traffic class information determining unit 310 provided by the invention divides the traffic class of the road into a first class, a second class, a third class, a fourth class, a fifth class and the like according to the average value of the signal intensity change rate of the communication connection between the mobile station in the driving state and the base station, and combines with the preset road class coefficient, and the traffic class can directly judge the traffic state of the road, such as L1 is very smooth, L2 is smooth, L3 is slightly congested, L4 is moderately congested and 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 participation of traffic information acquisition equipment, and the road traffic level can be evaluated on the road without the traffic information acquisition equipment.
Referring to fig. 4, in some embodiments of the invention, the apparatus further comprises: the target route planning module 311 is configured to plan a target route between a target start point and a target destination according to the road traffic condition information. According to the target line, the road of 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 light plan the target route according to real-time road traffic class information, traffic light indication law information.
Referring to fig. 4, in some embodiments of the invention, the apparatus further comprises: the target traffic speed determining module 312 is configured to determine a target traffic speed on the target road according to the road traffic condition information, and push the target traffic speed, so that a user drives the target vehicle at the target traffic speed to pass through the signal lamp within a real-time release time of the signal lamp. When the user runs according to the target traffic speed determined by the target traffic speed determining module 312, the time of waiting for the signal lamp can be effectively avoided, and the traveling efficiency and comfort level are improved.
The road traffic situation acquisition device provided by the embodiment of the invention is not only suitable for roads such as main roads, but also suitable for roads such as branch roads and small roads, so that the emergency rescue vehicle scheduling platform can give the emergency rescue vehicle a passing route suggestion and a passing speed suggestion according to the target line and the target passing speed determined by the road traffic situation acquisition device, so that the emergency rescue vehicle can quickly reach a destination through the roads such as the main roads and the small roads under the condition of congestion of the main roads, avoid waiting time of a signal lamp and strive for enough rescue time.
Referring to fig. 4, in some embodiments of the invention, the apparatus further comprises: an information desensitizing unit 313, configured to perform encryption processing on the obtained mobile station ID information, to obtain mobile station ID information in an encrypted state. The privacy of the user is protected by encrypting the mobile station ID information.
Referring to fig. 4, in some embodiments of the invention, the apparatus further comprises: the information query interface 322 is configured to wirelessly connect with a terminal or a platform, receive a query instruction sent by the terminal or the platform, and feed back a result after the query to the terminal or the platform.
Referring to fig. 4, in some embodiments of the invention, the apparatus further comprises: 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 diagram illustrating a structure of a resource pool according to an embodiment of the present invention. In some embodiments of the 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 situation information resource pool 319, a traffic light information resource pool 320, and a rapid filtering information resource 321 pool.
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 base station connection information.
The target data resource pool is used to store or record mobile station information including state information of the mobile station, history information of the mobile station, and the like.
The road traffic state information resource pool is used for storing or recording traffic state information of roads, such as road traffic grade information, road traffic state information lamps, 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 very smooth; l2 is unblocked; l3 mild congestion; l4 moderate congestion; l5 is very congested.
The signal lamp information resource pool is used for storing or recording signal lamp indication rule information, and comprises real-time release time of the signal lamp and real-time waiting information lamps.
The rapid filtering information resource pool is used for marking a base station capable of rapid filtering on a rapid road, and storing or recording rapid filtering configuration information, wherein the rapid filtering configuration information comprises one or more of a proportion threshold value and a change rate threshold value.
Fig. 6 shows a flow diagram of a road traffic situation information acquisition method.
Referring to fig. 6, the invention provides a road traffic condition information acquisition method, which comprises 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 the encrypted mobile station ID information is sent to the acquisition module;
s602, recording the base station connection information acquired by the acquisition module in the base station connectionIn the information resource pool, the states of the mobile stations are marked as S in the target data resource pool u (undetermined state);
s603, a resident target filtering unit filters the mobile stations in resident state according to a preset first time threshold and a first change rate and the change rate of the signal intensity of the mobile stations connected with the base station, and marks the states of the mobile stations as S in a target data resource pool S (resident state);
s604, a pedestrian target filtering unit filters mobile stations in a walking state according to a preset second duration range and a second change rate range and the signal intensity change rate of the mobile stations connected with the base station, and marks the states of the mobile stations as S in a target data resource pool t (walking state);
s605, the other target filtering units continue to filter the residual mobile stations filtered by the resident target filtering unit and the pedestrian target filtering unit, the signal intensity change rate of the mobile stations participating in traffic on non-main roads in the coverage area of the target base station is filtered, and the state of the mobile stations with the signal intensity change rate above a filtering threshold value in the target data resource pool is marked as S d (driving state), the remaining Mobile stations states are marked S o (other states);
s606, a road communication grade information determining unit is used for determining the road communication grade according to S d The average value of the signal intensity change rate and the road grade coefficient of the connection of the mobile station (driving state) and the base station are used for evaluating the road traffic situation, determining the target road traffic grade information and storing the target road traffic grade information in a road traffic situation information resource pool;
s607, a signal lamp indication rule information determining unit is used for determining the signal lamp indication rule according to S d The periodic variation rule of the signal intensity variation rate of the mobile station (in driving state) connected with the base station along with time is obtained, the real-time release time and the real-time waiting time of the signal lamp are obtained, 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 destination according to the traffic class information of the target road, the real-time release time and the real-time waiting time of the signal lamp, and determining the target traffic speed on the target line so that a user drives a target vehicle to pass through the signal lamp within the real-time release time of the signal lamp at the target traffic speed;
S609, pushing the target line and the target passing speed to the terminal or the platform.
The real-time traffic information collection method further comprises a sub-process based on rapid filtering:
the rapid filtering sub-process combines the three steps of S603, S604 and S605, the signal intensity change rate of the mobile stations connected with the base station is ordered from large to small directly by the rapid filtering unit, the mobile station information with larger change rate and higher change rate than the change rate threshold is selected according to the proportion threshold of the rapid filtering configuration information, and the mobile stations are marked as S d (driving state).
Based on the road traffic condition information obtaining method 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 road traffic situation information acquisition method according to any one of the above.
Based on the road traffic condition information obtaining method provided by the embodiment, the application also provides a specific implementation mode of the road traffic condition obtaining device.
Fig. 7 shows a schematic structural diagram of a road traffic situation acquisition device according to an embodiment of the present invention.
Referring to fig. 7, the road traffic situation acquisition device provided by the present invention may include a processor 701 and a memory 702 storing computer program instructions.
In particular, the processor 701 may comprise a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits implementing embodiments of the present invention.
Memory 702 may include mass storage for data or instructions. By way of example, and not limitation, memory 702 may comprise a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the foregoing. The memory 702 may include removable or non-removable (or fixed) media, where appropriate. Memory 702 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 702 is a non-volatile solid state memory. In a particular embodiment, the memory 702 includes Read Only Memory (ROM). 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, where appropriate.
The processor 701 implements any one of the road traffic condition information acquisition methods of the above embodiments by reading and executing the computer program instructions stored in the memory 702.
In one example, the road traffic situation 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 and perform communication with each other.
The communication interface 703 is mainly used for implementing communication between each module, device, unit and/or apparatus in the embodiment of the present invention.
The bus 704 includes hardware, software, or both that couple components of the road traffic situation acquisition device to each other. By way of example, and not limitation, the buses 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 the above. Bus 704 may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. 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 shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented in 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, a plug-in, a 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 over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, 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 the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this disclosure 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, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.

Claims (10)

1. A road traffic condition information acquisition method, characterized by comprising:
acquiring the signal strength of a communication signal between a target base station and a mobile station on a target road within a preset time period;
Determining a signal intensity change rate of the mobile station establishing 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 in a driving state which establishes communication connection with the target base station from the signal intensity change rate to obtain a target signal intensity change rate;
determining road traffic condition information according to the target signal strength change rate;
and screening the signal intensity change rate of the mobile station in a driving state, which establishes communication connection with the target base station, from the signal intensity change rate to obtain a target signal intensity change rate, wherein the method comprises the following steps:
removing the signal intensity change rate of which the signal intensity change rate is within the first change rate after a first time period from the signal intensity change rates, and obtaining the signal intensity change rate of the rest mobile stations which establish communication connection with the target base station in a second time period range, wherein the signal intensity change rate of which the signal intensity change rate is between the second change rate ranges;
removing the signal intensity change rate lower than the filtering threshold value from the signal intensity change rates of the rest mobile stations to obtain a target signal intensity change rate;
The filtering threshold is the product of the peak value of the change rate of the signal intensity of the rest mobile stations along with the change of time and a preset ratio S, wherein S is more than 0 and less than 1;
or alternatively, the process may be performed,
wherein the number of the mobile stations is plural,
the step of screening the signal intensity change rate of the mobile station in driving state, which establishes communication connection with the target base station, from the signal intensity change rate to obtain a target signal intensity change rate comprises the following steps:
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 previous R% from the signal intensity change rate array according to the sequence from large to small 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 of which the signal intensity change rate is higher than a change rate threshold value from the second signal intensity change rate array to obtain the target signal intensity change rate.
2. The method according to claim 1, further comprising, after said determining road traffic information based on said target signal strength change rate:
and planning a route between a target starting point and a target destination according to the road traffic condition information to obtain a target route.
3. The method of claim 1, wherein the road traffic condition information comprises traffic light indication law information,
the determining road traffic status information according to the target signal strength change rate includes:
drawing a graph of the change rate of the target signal strength along with the change of time, wherein the time is taken as an abscissa, and the change rate of the target signal strength is taken as an ordinate;
determining a periodic variation rule of the target signal intensity variation rate according to the graph;
and determining the real-time release time of the signal lamp according to the periodic change rule.
4. A method according to claim 3, further comprising, after said determining road traffic information based on said target signal strength change rate:
determining a target traffic speed on the target road according to the road traffic condition information;
and pushing the target passing speed 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.
5. The method of claim 1, wherein the road traffic condition information comprises road traffic class information,
The determining road traffic status information according to the target signal strength change rate includes:
determining a target signal intensity change rate average value according to the target signal intensity change rate;
when the average value of the change rate is more than or equal to a Gr, determining the road traffic grade information as a first grade;
when b×gr < the change rate average value is less than or equal to a×gr, determining the road traffic class information as a second class;
when c×gr < the change rate average value is less than or equal to b×gr, determining the road traffic class information as a third class;
when d is less than the average value of the change rate and less than or equal to c, determining the road traffic grade information as a fourth grade;
when the change rate average value is less than or equal to d×gr, determining that the road traffic class information is a fifth class;
where Gr is road class coefficient, 1> a > b > c > d >0.
6. The method according to claim 1, wherein the method further comprises:
and storing the road traffic condition information.
7. The method according to claim 1, wherein the method further comprises:
acquiring ID information of the mobile station connected with the target base station;
And carrying out encryption processing on the mobile station ID information to obtain the mobile station ID information in an encrypted state.
8. A road traffic condition information acquisition apparatus, characterized by comprising:
the acquisition module is used for acquiring the signal strength of the communication signal between the target base station and the mobile station on the target road within a preset time period;
a first determining module, configured to determine a rate of change of signal strength of the mobile station that establishes a communication connection with the target base station according to the preset time period and the signal strength;
the screening module is used for screening the signal intensity change rate of the mobile station in a driving state, which is in communication connection with the target base station, from the signal intensity change rate to obtain a target signal intensity change rate;
the second determining module is used for determining road traffic condition information according to the target signal strength change rate;
wherein, the screening module is specifically configured to:
removing the signal intensity change rate of which the signal intensity change rate is within the first change rate after a first time period from the signal intensity change rates, and obtaining the signal intensity change rate of the rest mobile stations which establish communication connection with the target base station in a second time period range, wherein the signal intensity change rate of which the signal intensity change rate is between the second change rate ranges;
Removing the signal intensity change rate lower than the filtering threshold value from the signal intensity change rates of the rest mobile stations to obtain a target signal intensity change rate;
the filtering threshold is the product of the peak value of the change rate of the signal intensity of the rest mobile stations along with the change of time and a preset ratio S, wherein S is more than 0 and less than 1;
or alternatively, the process may be performed,
the screening module is specifically configured to:
the number of the mobile stations is a plurality,
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 previous R% from the signal intensity change rate array according to the sequence from large to small 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 of which the signal intensity change rate is higher than a change rate threshold value from the second signal intensity change rate array to obtain the target signal intensity change rate.
9. 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 situation information obtaining method according to any one of claims 1-7.
10. 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 situation information obtaining method according to any one of claims 1-7.
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