CN113132939B - Method, device, equipment and storage medium for acquiring road traffic status information - Google Patents

Abstract

The invention discloses a road traffic condition information acquisition method, device, equipment and storage medium. The method for acquiring road traffic status information 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; The signal strength change rate of the mobile station that establishes a communication connection with the target base station; from the signal strength change rate, filter 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; according to the target signal strength change rate, road traffic condition information is determined. According to the embodiments of the present invention, traffic condition information of various roads with high accuracy can be obtained, thereby providing timely, accurate and comprehensive road condition information for vehicle traffic.

Description

Method, device, equipment and storage medium for acquiring road traffic status information

technical field

The invention belongs to the technical field of communication, and in particular relates to a method, device, equipment and storage medium for acquiring road traffic condition information.

Background technique

With the rapid development of the country's economy, the number of vehicles on the road has increased rapidly, and the traffic pressure has doubled. How to obtain road traffic conditions in time has become an urgent problem to be solved. In the prior art, traffic information collection equipment is usually used to collect traffic information of vehicles to obtain traffic flow information on roads, and then to obtain traffic status information on roads through calculation.

Usually, traffic information collection equipment adopts ring induction coil, microwave detector, video monitoring system, etc. However, these traffic information collection devices are easily affected by factors such as road surface deformation, vehicle congestion, uneven distribution of vehicle types, or the environment, and cannot guarantee the accuracy of road traffic status information.

Contents of the invention

Embodiments of the present invention provide a method, device, device, and storage medium for acquiring road traffic status information, which can improve the accuracy of acquiring road traffic status information.

On the one hand, an embodiment of the present invention provides a method for acquiring road traffic condition information, the method comprising:

Obtain 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;

determining a signal strength change rate of the mobile station establishing a communication connection with the target base station according to the preset time period and the signal strength;

From the rate of change of signal strength, filter the rate of change of signal strength of the mobile station in the driving state that establishes a communication connection with the target base station to obtain the rate of change of target signal strength;

Determine road traffic condition information according to the target signal strength change rate.

On the other hand, an embodiment of the present invention provides a device for acquiring road traffic condition information, the device comprising:

The obtaining module is used to obtain 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 the signal strength change rate of the mobile station establishing a communication connection with the target base station according to the preset time period and the signal strength;

A screening module, configured to filter the signal strength change rate of the mobile station in the driving state that establishes a communication connection with the target base station from the signal strength change rate to obtain the target signal strength change rate;

The second determination module is configured to determine road traffic condition information according to the target signal strength change rate.

In another aspect, an embodiment of the present invention provides a device for obtaining road traffic conditions, the device includes: a processor and a memory storing computer program instructions;

When the processor executes the computer program instructions, the method for acquiring road traffic condition information as described in any one of the above items is realized.

In another aspect, an embodiment of the present invention provides a computer storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the road traffic conditions as described in any one of the above are realized. Information acquisition method.

The method, device, device, and computer storage medium for obtaining road traffic status information provided in the embodiments of the present invention determine the connection with the target base station by obtaining the signal strength of the communication signal between the target base station and the mobile station within a preset time period. The signal strength change rate of the mobile station that establishes the communication connection, and then from the signal strength change rate, screen 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 The change rate, according to the target signal strength change rate, can determine the road traffic condition information. Since the base station can basically completely cover various roads such as trunk roads, branch roads, and small roads, it can satisfy each base station to collect mobile station information of a main road, and the way the base station obtains mobile station information is relatively stable and accurate, and is not easily affected by road deformation. , vehicle congestion, uneven distribution of vehicle types, or environmental factors. The target signal strength change rate is basically similar to the change value of the moving speed of the mobile station. Therefore, by adopting the method, device, equipment, and computer storage medium for obtaining road traffic conditions provided by the embodiments of the present invention, it is possible to obtain traffic status information of various roads with high accuracy, thereby providing timely and accurate information for vehicle traffic. , Comprehensive traffic information.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments of the present invention will be briefly introduced below. Additional figures can be derived from these figures.

Fig. 1 is a schematic structural diagram of a road traffic condition information acquisition system provided by an embodiment of the present invention;

Fig. 2 is a schematic flow chart of a method for acquiring road traffic condition information provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a device for acquiring road traffic condition information provided by an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a device for obtaining road traffic condition information provided by another embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a resource pool provided by an embodiment of the present invention;

Fig. 6 is a schematic flowchart of a method for obtaining road traffic condition information provided by an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a device for acquiring road traffic conditions provided by an embodiment of the present invention.

Detailed ways

The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention, not to limit the present 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 only to provide a better understanding of the present invention by showing examples of the present invention.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the statement "comprising..." does not exclude the presence of additional same elements in the process, method, article or device comprising said element.

In order to solve the problems in the prior art, embodiments of the present invention provide a method, device, equipment and computer storage medium for acquiring road traffic status information.

Fig. 1 shows a schematic structural diagram of a system for acquiring road traffic condition information provided by an embodiment of the present invention. As shown in FIG. 1 , the road traffic status information acquisition system includes a wirelessly connected mobile station 100 , a target base station 200 and a road traffic status information acquisition device 300 . In this system, the target base station 200 is a base station whose signal can cover the target road, and the mobile station 100 can be a user terminal that the signal of the target base station 200 can cover, such as a mobile phone, a vehicle communication terminal, etc., and establish a two-way wireless telephone circuit with the base station and make calls to the device. The road traffic status information acquiring device 300 determines the signal strength of the mobile station 100 establishing a communication connection with the target base station 200 by acquiring the signal strength of the communication signal between the target base station 200 and the mobile station 100 within a preset time period Rate of change, from the rate of change of signal strength, filter the rate of change of signal strength of the mobile station 100 in the driving state that establishes a communication connection with the target base station 200 to obtain the rate of change of target signal strength; then according to the rate of change of the target signal strength Intensity rate of change to determine road traffic status information.

In the prior art, traffic information collection equipment is used to collect vehicle traffic information, which is not only easily affected by factors such as road surface deformation, vehicle congestion, uneven distribution of vehicle types, environment, installation costs, etc., but also limited by the installation coverage area of these equipment. Usually, these traffic information collection devices are mainly installed on key arterial road sections. Due to the limitation of installation cost and equipment cost, traffic information collection devices are not installed on some branch roads and small roads. Therefore, the traffic conditions of this part of the road Information is unknown. For example, emergency rescue vehicles such as ambulances usually consider detours to avoid congestion when the main road is congested. When the traffic conditions are unknown, they will not go there rashly; therefore, the existing road traffic condition collection system cannot meet the needs of use.

However, the road traffic status information acquisition system provided by the present invention is based on the signal acquisition of the target base station and mobile station on the target road, which is different from collecting vehicle information by using traffic information collection equipment. The base stations used in the present invention can be 3G or 4G base stations. These base stations can basically completely cover the main roads and branch roads, and can meet the requirement that each base station collects the mobile station information of a main road, and the way the base station obtains the mobile station information is relatively stable. , Accurate, not easily affected by factors such as road surface deformation, vehicle congestion, uneven distribution of vehicle models, or the environment, and can make the final traffic condition information highly accurate, thereby providing more timely and accurate road condition information for vehicle traffic. Emergency rescue vehicles or other vehicles can choose the optimal way to move forward after obtaining the traffic status information of each trunk road or branch road.

The road traffic condition information acquisition method provided by the present invention can be applied to the above-mentioned road traffic condition information acquisition device. The road traffic condition information acquisition method provided by the embodiment of the present invention will first be introduced below.

Fig. 2 shows a schematic flowchart of a method for obtaining road traffic condition information provided by an embodiment of the present invention. As shown in FIG. 1 , the method for obtaining road traffic condition information provided in this embodiment may include S201 , S202 , S203 and S204 .

S201. Obtain 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 present invention, in order to obtain road traffic status information on a certain road, the road is used as a target road, and the base station whose signal coverage area mainly covers the road is used as the target base station. The base station is a public mobile communication base station, a radio transceiver station that transmits information between mobile phone terminals and other equipment 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 communication terminal, and other devices that are communicatively connected to the base station. The preset time period may be 1s, 5s, 10s, 30s, 1min and other time periods. 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 includes transmit power and received power. The signal strength will vary with the distance between the target base station and the mobile station. And change.

S202. Determine, according to the preset time period and the signal strength, a signal strength change rate of the mobile station establishing a communication connection with the target base station.

After acquiring the signal strength within the preset time period, a change curve of the signal strength within the preset time period may be plotted, and the signal strength change rate of the mobile station may be determined according to the change of signal strength over time. The state of the mobile station can be evaluated according to the rate of change of the signal strength of the mobile station. The mobile station is usually carried around, and the state of the mobile station can be in a driving state, a resident state, or a walking state.

S203. From the rate of change of signal strength, filter the rate of change of signal strength of a mobile station in a driving state that establishes a communication connection with the target base station to obtain a target rate of change of signal strength.

In order to accurately obtain road traffic status information, it is necessary to filter out the mobile stations in the resident state and the mobile state in the walking state, and filter out the mobile stations in the driving state that are communicatively connected with the target base station and located outside the target road In order to screen out the mobile stations in the driving state on the target road, and then obtain the rate of change of the target signal strength to evaluate the driving state of the vehicle on the target road. The specific screening method will be introduced in detail below.

S204. Determine road traffic status information according to the target signal strength change rate.

According to the change rate of the signal strength of the mobile station in the driving state, the traffic status of the road is determined to obtain more accurate traffic status information and provide convenient conditions for vehicle traffic. The road traffic status information includes, but is not limited to, one or more of road traffic level information and signal lamp indication regularity information. The specific method for determining the road traffic status information will be described in detail below.

In the method for obtaining road traffic conditions provided by the embodiments of the present invention, according to the acquired signal strength between the target base station and the mobile station on the target road, determine the signal strength change rate of the mobile station connected to the target base station, and then determine the signal strength change rate from the signal strength In the change rate, the signal strength change rate of the mobile station in the driving state is screened to obtain the target signal strength change rate. Since the target signal strength change rate is basically similar to the change rate of the moving speed of the mobile station, according to the target signal strength The rate of change can determine road traffic condition information. The road traffic state information may be information such as road traffic speed, traffic level, and indicator light patterns. The method for determining road traffic status information in the present invention is not easily affected by factors such as road surface deformation, vehicle congestion, uneven distribution of vehicle models, or the environment, and can obtain traffic status information of various roads with high accuracy, thereby providing more timely information for vehicle traffic , Accurate and comprehensive traffic information.

In some embodiments of the present invention, in step 203, the signal strength change rate of the mobile station in the driving state that establishes a communication connection with the target base station is screened from the signal strength change rate to obtain the target signal strength rate of change, including:

From the rate of change of signal strength, the rate of change of signal strength within the first rate of change after the first time period is removed, and the rate of change of signal strength within the second rate of change within the second time period The signal strength change rate between the change rate ranges is obtained to obtain the signal strength change rate of the remaining mobile stations establishing communication connections with the target base station;

From the signal strength change rates of the remaining mobile stations, remove the signal strength change rates lower than the filtering threshold to obtain the target signal strength change rate;

Wherein, the filtering threshold is the product of the peak value of the signal strength change rate of the remaining mobile stations over time and a preset ratio S, where 0<S<1.

In the embodiment of the present invention, the mobile stations in the resident state include mobile stations of non-traffic participants. These mobile stations may be mobile stations of a large number of employees in office buildings within the coverage of the base station, or some fixed Internet of Things For mobile stations of the device, after a period of time, the signal strength change rate of these mobile stations will be within a lower change rate, and the signal strength change rate after the first time period is removed from the signal strength change rate The rate of change of the signal strength within the first rate of change can filter out the mobile stations in the camping state. In a specific example, the first duration may be 20 minutes, and the first change rate may be 10%. Removing resident mobile stations by means of direct conditional filtering reduces the amount of raw data involved in traffic congestion, which can reduce the calculation load and improve the real-time and accuracy of calculation. Especially in urban office buildings, shopping malls, or places with a large number of resident objects, such as urban office buildings, shopping malls, or IoT devices, removing resident objects through direct conditional filtering through this strategy can effectively reduce the amount of raw data involved in traffic congestion.

In the embodiment of the present invention, the mobile stations in the walking state are mainly mobile stations in low-speed motion, mainly including mobile stations of non-traffic participants. For human mobile stations, within a certain time range, the signal strength change rates of these mobile stations will fluctuate within a change rate range, and the signal strength change within a second time length range is removed from the signal strength change rate The rate of change of the signal strength within the range of the second rate of change can filter out mobile stations in a walking state. In a specific example, the second duration range may be 5-10 minutes, and the second change rate range may be 2%-5%. After the mobile station in the walking state is filtered out by this filtering method, the amount of raw data involved in the traffic congestion state can be reduced in the subsequent calculation of the traffic congestion state, the calculation load can be further reduced, and the real-time performance and accuracy of the calculation can be further improved. Especially in places with a large number of pedestrian target accesses such as pedestrian streets, mobile stations in the walking state are directly removed through this filter condition, effectively reducing the amount of raw data involved in the traffic usage state.

Because the coverage of a base station includes a main road A, also includes a part of other roads such as road B, main road A refers to the road that this base station mainly monitors, and road B is the road that another base station mainly monitors, through the implementation of the present invention The above filtering method in the example can filter out the mobile stations in the camping state and the mobile stations in the walking state to obtain the remaining mobile stations, but cannot filter out the mobile stations in the driving state on other roads such as road B. Since the change values of the driving speed of vehicles on the same road are basically similar, the individual speed change values of these vehicles are close to the overall average change value within a period of time, while the vehicle change values of other roads within the signal coverage area are different from the average value. Therefore, by setting a filter threshold, the rate of change of signal strength lower than the filter threshold can be removed from the rate of change of signal strength of the remaining mobile stations to obtain the signal of the mobile station in the driving state on the target road The intensity change rate, that is, the target signal intensity change rate, realizes the removal of mobile stations in a driving state on non-main roads within the range of the base station. After filtering out the mobile stations in the camping state and the mobile stations in the walking state, the remaining mobile stations obtained include the mobile stations in the driving state on other roads such as road B, and the signal strength change rate of the remaining mobile stations is filtered out If the rate of change of the signal strength is lower than the filtering threshold, the rate of change of the signal strength of the mobile station in the driving state on the main road A can be obtained, so as to obtain the rate of change of the target signal strength. Through the direct conditional filtering method provided by the embodiment of the present invention, the mobile stations of traffic participants on non-main roads within the coverage of the base station are removed, reducing the amount of raw data involved in the traffic jam state, reducing the calculation load, and improving the real-time performance of the calculation and accuracy.

In a specific example, the calculation method of the filtering threshold may be: according to the absolute value of the signal strength change rate of the remaining mobile stations, draw a change rate distribution curve, the abscissa is time, and the ordinate is the signal strength change rate, and the peak value of the change rate is obtained For the corresponding ordinate position, further calculate the ordinate position where the change rate peak value falls to the ordinate position of its preset ratio S, which is the filtering threshold. Among the remaining mobile stations, the mobile stations whose signal strength change rate is above the filtering threshold can be considered as the mobile stations in the driving state, and the rest of the mobile stations can be judged to be in other states. In a specific example, the preset ratio S may be selected as 70%, which is close to the middle value.

In some embodiments of the present invention, in step 203, there are multiple mobile stations, and from the signal strength change rate, the signal of a mobile station in a driving state that establishes a communication connection with the target base station is screened Intensity change rate, to obtain the target signal intensity change rate, including:

Sorting each of the signal strength change rates from large to small to obtain a first array of signal strength change rates;

From the array of signal strength change rates, filter the first R% signal strength change rates in descending order to obtain a second signal strength change rate array, 0<R%<1;

From the second array of signal strength change rates, filter the signal strength change rates whose signal strength change rates are higher than a change rate threshold to obtain the target signal strength change rate.

For some express roads, such as expressways, expressways, etc., some areas are not equipped with residential areas and office areas, and most of the nearby base stations are covered by roads, and only motor vehicles are allowed on the roads. For these base stations, you can It is marked as a fast filtering base station, and there are multiple mobile stations connected to the fast filtering base station, most of which are driving mobile stations, but also include a small number of IoT devices and walking mobile stations. Quick filtering information can be artificially prepared, and the ratio threshold R% can be set, 0<R%<1. For example, 85% of the mobile stations within the coverage of the base station are mobile stations in the driving state, and the ratio threshold is used to filter the coverage of the base station. Internet of things devices and mobile stations of pedestrians passing by occasionally. The fast filtering information can also include a change rate threshold. The change rate threshold is used when the number of samples is small, for example, there may be fewer vehicles passing at night, which can effectively prevent other terminal devices from being filtered out when only setting the ratio threshold, thereby further improving Filtration accuracy. Therefore, when the target road is an express road, the embodiment of the present invention can sort the signal strength change rates of each mobile station from large to small to obtain a first array of signal strength change rates; and then from the first signal strength change In the rate array, filter the signal strength change rate of the previous R% in order from large to small to obtain a second signal strength change rate array; then from the second signal strength change rate array, filter the signal strength change rate The rate of change of signal strength higher than the threshold value of the rate of change is to obtain the rate of change of signal strength of the mobile station in the driving state on the target road, that is, the rate of change of target signal strength is obtained.

In some embodiments of the present invention, in step S204, the road traffic status information includes road traffic level information, and the determination of the road traffic status information according to the target signal strength change rate includes:

determining an average value of the rate of change of the target signal strength according to the rate of change of the target signal strength;

When the average value of the rate of change ≥ a*Gr, determine that the road traffic level information is the first level;

When b*Gr<the average value of the change rate≤a*Gr, determine that the road traffic level information is the second level;

When c*Gr<the average value of the change rate≤b*Gr, determine that the road traffic level information is the third level;

When d*Gr<the average value of the change rate≤c*Gr, determine that the road traffic level information is the fourth level;

When the average value of the rate of change ≤ d*Gr, determine that the road traffic level information is the fifth level;

Among them, Gr is the road grade coefficient, 1>a>b>c>d>0.

In the embodiment of the present invention, the average value of the target signal strength change rate can be determined according to the target signal strength change rate, and the road traffic level information can be determined according to the relationship between the change rate average value and the road grade coefficient Gr, such as the first level, the second The second level, the third level, the fourth level, and the fifth level are convenient for users to intuitively understand the traffic status of the target road, such as very smooth, smooth, lightly congested, moderately congested, and very congested. The road grade coefficient Gr is used to correct the traffic status judgment of roads of different grades.

In a specific example, a may take 15%, b may take 10%, c may take 7%, and d may take 4%.

In a specific example, the Gr is 120% for roads with a road class of "expressway"; the Gr for roads with a road class of "trunk road" is 100%; and the Gr for roads with a road class of "secondary road" is 90% %; Gr is 70% for roads with road class "Branch Road".

In some embodiments of the present invention, in step S204, the road traffic status information includes signal light indication regularity information, and the determination of the road traffic status information according to the target signal strength change rate includes:

Draw a graph of the rate of change of the target signal strength over time, with time as the abscissa and the rate of change of the target signal strength as the ordinate;

determining the periodic variation law of the rate of change of the target signal strength according to the graph;

According to the periodic change law, the signal light indication law information is determined, and the signal light indication law information includes the real-time release time of the signal light.

Since the change rate of the target signal strength 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 mobile station in the driving state on the road. On the road with signal lights, the driving speed change rate curve will be It presents a periodic change, therefore, by determining the periodic change law of the rate of change of the target signal strength, the indication law information of the signal light can be determined. In order to determine the indication law information of the signal light, time can be used as the abscissa, and the target signal strength change rate can be used as the ordinate to draw a graph of the target signal strength change rate versus time, which can be further determined according to the graph The periodic change law of the target signal strength change rate, and then determine the signal light indication law information according to the periodic change law of the target signal strength change rate, and the signal light indication law information may include the real-time release time and real-time waiting time of the signal light . When drawing the curve graph of the rate of change of the target signal strength over time, if the curve of the rate of change of the target signal strength also presents a periodic change rule, it can be considered that there is a signal light on the target road. According to the cycle of the rate of change of the target signal strength The release time and waiting time of the signal light can be determined according to the change rule of the signal light. According to the relationship between the release time length, the waiting time length and the real time, the real-time release time and real-time waiting time of the signal light can be determined. Since most of the existing traffic lights are controlled offline, the traffic information platform cannot obtain the indication status of the signal lights, and the road planning for emergency rescue vehicles can only be roughly determined by the road traffic conditions, and the accurate arrival time cannot be obtained. The embodiment can provide real-time signal lamp indication state time, so as to provide a favorable basis for accurately arriving at the destination.

In some embodiments of the present invention, the road traffic condition information is stored. After the road traffic status information is stored, it is convenient for the road traffic status information acquisition device to directly use the stored road traffic status information to plan routes and driving speeds for users.

In some embodiments of the present invention, after step S204, that is, after determining the road traffic condition information according to the target signal strength change rate, the method may further include:

According to the road traffic status information, a route between the target start point and the target end point is planned to obtain the target route.

After the traffic status information of different roads is obtained by using the road traffic status information acquisition method provided by the present invention, according to the target start point and target end point input by the user through the terminal or platform, as well as the switching information between base stations, all traffic from the target start point to the target end point Among the roads, the smoother and less time-consuming route is planned as the target route. After obtaining the target route, the user can proceed according to the target route to avoid congested roads and improve travel 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 strength change rate, the method may further include:

determining a target passing speed on the target road according to the road traffic condition information;

The target passing speed is pushed, so that the user drives the target vehicle at the target passing speed to pass the signal light within the real-time release time of the signal light.

Since there is a positive correlation between the signal strength change rate of the mobile station and the vehicle speed, the current vehicle speed can be evaluated according to the signal strength change rate. After the traffic status information, the target traffic speed of the target road can be determined. The target traffic speed refers to the suggested vehicle traffic speed. After the target traffic speed is pushed, the user can drive the target vehicle according to the received target traffic speed. Passing the signal light within the real-time release time of the signal light can effectively avoid the time of waiting for the signal light and improve travel efficiency and comfort.

In some embodiments of the present invention, the method also includes:

acquiring ID information of the mobile station connected to the target base station;

Encrypting the mobile station ID information to obtain encrypted mobile station ID information.

In the embodiment of the present invention, the ID information of the mobile station can be encrypted according to an encryption algorithm such as an information digest algorithm and an MD5 encryption algorithm, and the encrypted content cannot be decrypted, even if combined with the mobile station ID information recorded by the mobile station operator. It is not clear who the user is. Therefore, by encrypting the mobile station ID information to obtain the encrypted mobile station ID information, the road traffic status information acquisition device can only distinguish different users and protect user privacy.

In some embodiments of the present invention, the method further includes: acquiring map information of the target road. Map information includes but is not limited to one or more of road information, road location coordinate information, road grade information, and main base station information corresponding to each road. The main base station of the road is the signal coverage area of the base station. The area covered by other roads is small, reducing the impact of other roads on the main road.

In some embodiments of the present invention, the method further includes: acquiring base station information on the target road. The base station information includes, but is not limited to, one or more of base station numbers and base station addresses, base station coverage, numbers of adjacent base stations of the base station, and base station types.

In some embodiments of the present invention, the method further includes: acquiring the base station connection information on the target road, the base station connection information includes but not limited to the ID information of the mobile station, the time information when the mobile station registers with a certain base station, the time information between the mobile station and a certain base station One or more of the connection time information.

In some embodiments of the present invention, the method further includes: acquiring information of mobile stations communicatively connected with the base station on the target road. The mobile station information includes the state information of the mobile station, the history information of the mobile station, etc.; the state of the mobile station may include: Su (undetermined state), Sd (driving state), St (walking state), Ss (stationary state) and So (other states), the state of the mobile station can be updated in real time; the historical information of the mobile station can be the location information of the historical state of the mobile station, for example, the mobile station whose ID is 1 mainly resides within the signal range of base station A and base station C.

In some embodiments of the present invention, the method further includes: storing one or more of the map information, base station information, base station connection information, and mobile station information.

Based on the method for acquiring road traffic status information provided in the above embodiments, the present application also provides a specific implementation manner of a device for acquiring road traffic status.

Please refer to FIG. 3 , which shows a schematic structural diagram of a device for obtaining road traffic conditions provided by an embodiment of the present invention. As shown in Figure 3, the road traffic condition acquisition device provided in this embodiment includes:

The obtaining module 301 is used to obtain 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;

The first determination module 302 is configured to determine the signal strength change rate of the mobile station establishing a communication connection with the target base station according to the preset time period and the signal strength;

The screening module 303 is configured to screen the signal strength change rate of the mobile station in the driving state that establishes a communication connection with the target base station from the signal strength change rate to obtain the target signal strength change rate;

The second determination module 304 is configured to determine road traffic condition information according to the target signal strength change rate.

The road traffic status acquisition device provided by the present invention acquires 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 through the acquisition module 301, and determines the mobile station connected to the target base station according to the first determination module 302. According to the rate of change of signal strength of the mobile station, according to the screening module 303, from the rate of change of signal strength, filter the rate of change of signal strength of the mobile station in the driving state to obtain the rate of change of target signal strength, and then determine the road through the second determination module 304 Traffic status information, road traffic status information may be road traffic speed, road traffic level, information on the regularity of indicator lights, etc. The road traffic status acquisition device provided by the present invention is not easily affected by factors such as road surface deformation, vehicle congestion, uneven distribution of vehicle models, or the environment, and can obtain traffic status information of various roads with high accuracy, thereby providing more timely information for vehicle traffic. , Accurate and comprehensive traffic information.

In some embodiments of the present invention, the obtaining module 301 can be an interface for inputting base station information, used to connect to the base station, and can also be used to obtain base station information and base station connection information, providing a favorable basis for subsequent determination of road traffic status information. The base station information includes, but is not limited to, one or more of base station numbers and base station addresses, base station coverage, numbers of adjacent base stations of the base station, and base station types. 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 to a certain base station.

Fig. 4 shows a schematic structural diagram of a device for acquiring road traffic conditions provided by another embodiment of the present invention.

Referring to FIG. 4 , in some embodiments of the present 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 target filtering unit 305 is used to filter out the signal strength change rate of the signal strength change rate within the first change rate after the first duration, that is, to filter out the signal strength of the mobile station in the camping state rate of change. The pedestrian target filtering unit 306 is used to filter out the signal strength change rate of the signal strength change rate between the second change rate range within the second time length range, that is, to filter out the signal strength of the mobile station in the walking state rate of change. After being filtered by the resident target filtering unit 305 and the pedestrian target filtering unit 306 , the signal strength change rates of the remaining mobile stations establishing communication connections with the target base station are obtained. Both the resident target filtering unit 305 and the pedestrian target filtering unit 306 can effectively reduce the amount of raw data involved in the traffic jam state, reduce the calculation load, and improve the real-time and accuracy of the calculation.

The other target filtering unit 307 is configured to filter out the signal strength change rates of the remaining mobile stations that are lower than the filtering threshold to obtain the target signal strength change rates. The remaining mobile stations include not only the mobile stations in the driving state on the main roads within the coverage of the base station, but also the mobile stations participating in traffic on the non-main roads. The other target filtering unit 307 is used to filter out the mobile stations participating in the traffic on the non-main roads The rate of change of the signal strength of the station can further reduce the amount of raw data involved in traffic congestion, further reduce the calculation load, and improve the real-time and accuracy of calculation.

Referring to FIG. 4, in some embodiments of the present invention, the screening module 303 includes a fast filtering unit 308, and the fast filtering unit 308 is used to quickly filter out signals in a driving state that establish a communication connection with the target base station on the expressway. Intensity rate of change, the fast filter unit 308 may include:

The sorting module 323 is configured to sort each of the signal strength change rates from large to small to obtain a first array of signal strength change rates; there are multiple mobile stations communicatively connected to the target base station, including a mobile station in a driving state and mobile stations in the walking state, etc., but most of them are mobile stations in the driving state, and the signal strength change rate of the mobile stations in the driving state is relatively large. State is the rate of change of the signal strength of the mobile station.

The first screening module 324, from the signal strength change rate array, screens the first R% signal strength change rates in descending order to obtain a second signal strength change rate array, 0<R%<1; A screening module can basically filter out devices such as mobile stations in a walking state by screening the R% signal strength change rate before screening.

The second screening module 325 selects the signal strength change rates whose signal strength change rates are higher than a 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 other terminal devices from being filtered out only when the ratio threshold R% is set, thereby improving filtering accuracy.

Referring to FIG. 4 , the second determining module 304 includes, but is not limited to, one or more of a signal light indication rule information determining unit 309 and a road traffic level information determining unit 310 .

Signal light indication rule information determining unit 309 is used to determine the real-time release time of signal lights. The signal light indication rule information determination unit 309 includes:

A drawing module 326, configured to draw a graph of the rate of change of the target signal strength over time, with time as the abscissa and the rate of change of the target signal strength as the ordinate;

The third determination module 327 is configured to determine the periodic change rule of the target signal strength change rate according to the graph;

The fourth determination module 328 determines the real-time release time of the signal light according to the periodic change rule.

According to the information determination unit 309 of signal lamp indication rule information of the present invention, the graph of the rate of change of the target signal intensity changing with time is drawn, and the periodic change rule of the rate of change of the target signal intensity can be determined according to the graph of the rate of change of the target signal intensity. Periodic change law, it can be considered that there is no signal light on the target road. If there is a periodic change law, it can be considered that there is a signal light on the target road. According to the periodic change law, the release time and waiting time of the signal light can be determined. According to the release time and The relationship between the waiting time and the real-time time can determine the real-time release time and real-time waiting time of the signal light.

The road traffic level information determination unit 310 is used to determine the average value of the target signal strength rate of change according to the target signal strength rate of change, and determine the road traffic level according to the relationship between the average value of the rate of change and the road level coefficient, specifically:

When the average value of the rate of change ≥ a*Gr, determine that the road traffic level information is the first level;

When b*Gr<the average value of the change rate≤a*Gr, determine that the road traffic level information is the second level;

When c*Gr<the average value of the change rate≤b*Gr, determine that the road traffic level information is the third level;

When d*Gr<the average value of the change rate≤c*Gr, determine that the road traffic level information is the fourth level;

When the average value of the rate of change ≤ d*Gr, determine that the road traffic level information is the fifth level;

Among them, Gr is the road grade coefficient, which is used to correct the judgment of traffic conditions of roads of different grades, 1>a>b>c>d>0. In a 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, it can be considered that the road traffic condition is L1 is very smooth, and under this traffic level, vehicles on this road can pass without hindrance.

When it is determined that the road traffic level information is the second level, it can be considered that the road traffic condition is L2 smooth, and under the condition of this traffic level, the vehicles on the road can basically pass without hindrance.

When it is determined that the road traffic level information is the third level, it can be considered that the road traffic condition is L3 mild congestion. Under this traffic level, the vehicles on this road are lightly congested, which takes 0.2-0.5 times longer than the L2 smooth level. .

When it is determined that the road traffic level information is the fourth level, it can be considered that the road traffic condition is L4 moderate congestion. In the case of this traffic level, the road's vehicles are moderately congested, which takes 0.5-0.8 times longer than the L2 unimpeded level .

When it is determined that the road traffic level information is the fifth level, it can be considered that the road traffic condition is very congested at L5. In the case of this traffic level, the vehicles on this road are very congested, which takes more than 1.1 times more time than the L2 unblocked level.

The road traffic level information determination unit 310 provided by the present invention divides the traffic level of the road according to the average value of the signal strength change rate of the mobile station in the driving state and the communication connection between the base station and the preset road level coefficient, and the traffic level can be determined by It is divided into the first level, the second level, the third level, the fourth level, the fifth level, etc. The traffic level can directly judge the road traffic conditions, such as L1 is very smooth, L2 is smooth, L3 is slightly congested, and L4 is moderate Congestion, L5 is very congested. When the road traffic level information determination unit 301 provided by the present invention evaluates the road traffic level, it does not require the participation of traffic information collection equipment, and the road traffic level can be evaluated by combining base station information and mobile station information with the technical solution provided by the present invention , has non-cooperative characteristics, and can also evaluate road traffic levels on roads where traffic information collection equipment is not installed.

Referring to FIG. 4 , in some embodiments of the present invention, the device further includes: a target route planning module 311 , configured to plan a target route between a target starting point and a target end point according to the road traffic condition information. Traveling according to the target route can avoid traffic jams and reach the end point in a short time. In some specific examples, the target route planning module 311 can plan the target route according to real-time road traffic level information and signal lamp indication rule information.

Referring to FIG. 4, in some embodiments of the present invention, the device further includes: a target passing speed determination module 312, configured to determine the target passing speed on the target road according to the road traffic condition information, and push the The target passing speed is set so that the user drives the target vehicle to pass the signal light within the real-time release time of the signal light at the target passing speed. When the user travels according to the target traffic speed determined by the target traffic speed determination module 312, the time spent waiting for the signal lights can be effectively avoided, and the travel efficiency and comfort can be improved.

The road traffic status acquisition device provided by the embodiment of the present invention is not only suitable for trunk roads, but also for branch roads, small roads and other roads. Therefore, the emergency rescue vehicle dispatching platform can obtain the target route and target traffic according to the road traffic status acquisition device. Speed, giving advice on the route and speed of the emergency rescue vehicle, so that the emergency rescue vehicle can quickly reach the destination through branch roads, small roads and other roads when the main road is congested, and avoid the waiting time of signal lights , to gain enough rescue time.

Please refer to FIG. 4 , in some embodiments of the present invention, the device further includes: an information desensitization unit 313, configured to encrypt the acquired mobile station ID information to obtain encrypted mobile station ID information. The user's privacy is protected by encrypting the ID information of the mobile station.

Please refer to FIG. 4, in some embodiments of the present invention, the device further includes: an information query interface 322, which is used to wirelessly connect with the terminal or platform, receive query instructions sent by the terminal or platform, and feed back the query results to the terminal or platform.

Referring to FIG. 4 , in some embodiments of the present invention, the device further includes: a resource pool 314 . The resource pool can be used to store various information in other modules and units.

Please refer to FIG. 5 , which shows a schematic structural diagram of a resource pool provided by an embodiment of the present invention. In some embodiments of the present invention, the resource pool 314 includes, but is not limited to, 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 condition information resource pool 319, One or more of the signal light information resource pool 320 and the quick filter information resource pool 321 .

The map information resource pool is used to store or record map information.

The base station metadata resource pool is used to store or record base station information.

The base station connection information resource pool is used to store or record base station connection information.

The target data resource pool is used to store or record mobile station information, and the mobile station information includes state information of the mobile station, historical information of the mobile station, and the like.

The road traffic status information resource pool is used to store or record road traffic status information, such as road traffic level information and road traffic status information lights. The road traffic level information can be the first level, the second level, the third level, and the fourth level , the fifth level, etc., the road traffic status information can be that L1 is very smooth; L2 is smooth; L3 is slightly congested; L4 is moderately congested; L5 is very congested.

The signal light information resource pool is used to store or record signal light indication rule information, including real-time release time of signal lights and real-time waiting information lights.

The quick filtering information resource pool is used to mark base stations capable of quick filtering on the expressway, and to store or record quick filtering configuration information. The quick filtering configuration information includes but not limited to one or more of ratio thresholds and change rate thresholds.

Fig. 6 shows a schematic flowchart of a method for acquiring road traffic condition information.

Please refer to FIG. 6, the present invention provides a method for obtaining road traffic condition information, including the following steps:

S601. The acquisition module acquires the base station connection information on the target road, and the information desensitization unit encrypts the mobile station ID information in the base station connection information to obtain the encrypted mobile station ID information, and sends the encrypted mobile station ID information to get module;

S602. Record the base station connection information obtained by the acquisition module in the base station connection information resource pool, and mark the states of these mobile stations as _Su (undetermined state) in the target data resource pool;

S603. The camping target filtering unit filters the mobile stations in the camping state according to the preset first long-term threshold and the first change rate and the signal strength change rate of the mobile station connected to the base station, and lists these mobile stations in the target data resource pool The status of is marked as S _S (resident status);

S604. The pedestrian target filtering unit filters the mobile stations in the walking state according to the preset second duration range and second change rate range and the signal strength change rate of the mobile stations connected to the base station, and collects the mobile stations in the target data resource pool The state is marked as S _t (walking state);

S605. The other target filtering unit continues to filter the remaining mobile stations filtered by the resident target filtering unit and the pedestrian target filtering unit, and filters out the signal strength change rates of mobile stations participating in traffic on non-main roads within the coverage of the target base station, In the target data resource pool, the state of the mobile station whose signal strength change rate is above the filtering threshold is marked as S _d (driving state), and the states of the remaining mobile stations are marked as S _o (other states);

S606, the road communication level information determination unit is used to evaluate the road traffic situation according to the average value of the signal strength change rate and the road level coefficient of the mobile station connected to the base station according to S _d (driving state), determine the target road traffic level information, and pass the target road traffic Level information is stored in the resource pool of road traffic information;

S607, signal light indication rule information determination unit is used for according to the periodic change law of the signal strength change rate that the mobile station of S _d (driving state) is connected with the base station with time, obtains the real-time release time and the real-time waiting time of signal light, and releases in real time Time and real-time waiting time are stored in the semaphore resource pool;

S608. According to the target road traffic level information, real-time release time and real-time waiting time of signal lights, plan the target line between the target starting point and the target end point, and determine the target traffic speed on the target line, so that the user drives at the target traffic speed The target vehicle passes the signal light within the real-time release time of the signal light;

S609. Push the target line and the target passing speed to the terminal or platform.

The real-time traffic information collection method also includes sub-processes based on quick filtering:

The fast filtering sub-process combines the three steps of S603, S604, and S605, and directly sorts the signal strength change rates of the mobile stations connected to the base station from large to small through the fast filtering unit, and selects the change rate according to the ratio threshold of the fast filtering configuration information The information of mobile stations with larger change rate and higher than the change rate threshold, and mark these mobile stations as S _d (driving state).

Based on the method for acquiring road traffic condition information provided in the foregoing embodiments, the present application further provides a specific implementation manner of a computer storage medium. Computer program instructions are stored on the computer storage medium, and when the computer program instructions are executed by a processor, the method for acquiring road traffic status information as described in any one of the above items is implemented.

Based on the method for acquiring road traffic condition information provided in the foregoing embodiments, the present application further provides a specific implementation manner of a device for acquiring road traffic condition.

Fig. 7 shows a schematic structural diagram of a device for obtaining road traffic conditions provided by an embodiment of the present invention.

Referring to FIG. 7 , the device for obtaining road traffic conditions 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 (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits in the 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 include a hard disk drive (Hard Disk Drive, HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a Universal Serial Bus (Universal Serial Bus, USB) drive or two or more Combinations of multiple of the above. Storage 702 may include removable or non-removable (or fixed) media, where appropriate. Under appropriate circumstances, the storage 702 can be inside or outside the comprehensive gateway disaster recovery device. In a particular embodiment, memory 702 is a non-volatile solid-state memory. In particular embodiments, 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 the above.

The processor 701 reads and executes the computer program instructions stored in the memory 702 to implement any method for acquiring road traffic condition information in the above-mentioned embodiments.

In an example, the device for obtaining road traffic conditions may further include a communication interface 703 and a bus 704 . Wherein, as shown in FIG. 6 , a processor 701 , a memory 702 , and a communication interface 703 are connected through a bus 704 to complete mutual communication.

The communication interface 703 is mainly used to realize the communication between various modules, devices, units and/or devices in the embodiments of the present invention.

The bus 704 includes hardware, software or both, and couples the components of the road traffic condition acquisition device to each other. By way of example and not limitation, the bus may include Accelerated Graphics Port (AGP) or other graphics bus, Enhanced Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), HyperTransport (HT) interconnect, Industry Standard Architecture (ISA) Bus, Infiniband Interconnect, Low Pin Count (LPC) Bus, Memory Bus, Micro Channel Architecture (MCA) Bus, Peripheral Component Interconnect (PCI) Bus, PCI-Express (PCI-X) Bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or a combination of two or more of these. Bus 704 may comprise one or more buses, where appropriate. Although embodiments of the invention describe and illustrate a particular bus, the invention contemplates any suitable bus or interconnect.

It is to be understood that the invention is not limited to the specific arrangements and processes described above and shown in the drawings. For conciseness, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is 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 sequence of steps after understanding the spirit of the present invention.

The functional blocks shown in the structural block diagrams described above 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, a plug-in, a function card, or the like. When implemented in software, the elements of the invention are the programs or code segments employed to perform the required tasks. Programs or code segments can be stored in machine-readable media, or transmitted over transmission media or communication links by data signals carried in carrier waves. "Machine-readable medium" may include any medium that can store or transmit information. Examples of machine-readable media 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 the like. Code segments may be downloaded via a computer network such as the Internet, an Intranet, or the like.

It should also be noted that the exemplary embodiments mentioned in the present invention 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 steps, that is, the steps may be performed in the order mentioned in the embodiment, or may be different from the order in the embodiment, or several steps may be performed simultaneously.

The above is only a specific implementation of the present invention, and those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described systems, modules and units can refer to the foregoing method embodiments The corresponding process in , will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present invention, and these modifications or replacements should cover all Within the protection 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,

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,

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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