WO2018171314A1 - Method and device for acquiring transportation information - Google Patents

Abstract

The present disclosure relates to a method and device for acquiring transportation information, the method comprising: receiving trajectory data transmitted by a target vehicle whose distance from a target highway entrance is in a preset range; and acquiring a traffic state of the target highway entrance according to the trajectory data and highway network data. With the present disclosure, a traffic state of a target highway entrance may be accurately acquired according to trajectory data transmitted by a vehicle, such that a traveler may accurately acquire the travel state of a highway, and thus travel will not be affected due to untimely or failed issuing of information issued by a highway management party.

Description

Traffic information acquisition method and device Technical field

The present disclosure relates to the field of information processing technologies, and in particular, to a method and an apparatus for acquiring traffic information.

Background technique

Highways are an important part of modern transportation. In order to ensure the safety of driving, under the adverse weather conditions (for example, the visibility caused by rain, snow, fog, etc.), the entrance of the highway will be closed, and the vehicle is prohibited from entering the highway. When the entrance of the expressway is closed, if the driver of the vehicle cannot know the closed state of the expressway in time, the vehicle and personnel will be stranded at the entrance of the expressway, greatly delaying the travel time of the vehicle.

In the related art, when a traveler needs to inquire about the state of highway traffic, it is generally obtained through a traditional information platform and a network, such as a broadcast, television, or highway official website. However, the state of highway traffic obtained by the broadcast, television, and highway official websites is known from the highway management party (for example, the relevant road administration department). If the information released by the expressway management party is not timely or the publication fails due to the sudden release of the situation, it will result in the traveler not being able to obtain the traffic status of the expressway in time or the status of the relevant expressway entrance, and the pedestrian’s Traveling is inconvenient.

Summary of the invention

An object of the present disclosure is to provide a method and apparatus for acquiring traffic information to solve the problems in the related art.

In order to achieve the above object, a first aspect of the present disclosure provides a traffic information acquisition method, including: receiving trajectory data transmitted by a target vehicle within a preset range from a target highway entrance; according to the trajectory data and high speed Highway road network data, obtaining the traffic status of the target highway entrance.

Optionally, the step of determining the traffic state of the target highway entrance according to the trajectory data and the highway network data includes: acquiring a toll station of the target highway entrance from the highway network data Coordinates of the intersection roadway having the closest distance to the toll booth; obtaining a straight line distance between the toll booth and the intersection roadway; acquiring the target vehicle The trajectory data in the preset time period is a radius of the straight line distance, the toll booth is a first vehicle set within a first range of the center of the circle; and determining the location according to the number of vehicles in the first vehicle set The traffic status of the target highway entrance.

Optionally, the step of determining the traffic state of the target highway entrance according to the number of vehicles in the first vehicle set includes: if the number of vehicles of the first vehicle set is greater than a first preset number, according to Trajectory data of the vehicle in the first vehicle set acquires a traveling speed of the vehicle in the first vehicle set; if the traveling speed of the vehicle in the first vehicle set is lower than the first preset speed, determining The probability that the traffic state of the target highway entrance is closed is the first probability.

Optionally, determining, according to the number of vehicles in the first vehicle set, the determining of the traffic state of the target highway entrance includes: acquiring, if the number of vehicles in the first vehicle set is less than a first preset number, acquiring In the target vehicle, the trajectory data in the preset time period is at a radius of a preset distance, and the toll booth is a second vehicle set in a second range of the center; according to the second vehicle set The direction information in the trajectory data of the vehicle is obtained as a third vehicle set entering the expressway; if the number of vehicles in the third vehicle set is less than a preset threshold, determining that the freeway is closed is the second probability a probability; if the number of vehicles in the third set of vehicles is greater than the preset threshold, determining a travel speed of the vehicle in the third set of vehicles according to trajectory data of the vehicle in the third set of vehicles; If the traveling speed of the vehicle in the third vehicle set is lower than the second preset speed, determining that the traffic state of the target expressway entrance is closed is a third probability; Vehicle number of the third set vehicle speed is higher than the second predetermined vehicle speed greater than a second predetermined number, it is determined that the traffic state of the highway entrance closed probability fourth probability.

Optionally, the method further includes: acquiring vehicle state data of the vehicle in the first vehicle set, the vehicle state data including at least one of: a fog light on state and a wiper on state; A traffic state of the target expressway entrance is determined by the number of vehicles in a set of vehicles and vehicle state data of the vehicles in the first set of vehicles.

Optionally, the step of determining the traffic state of the target highway entrance according to the trajectory data and the highway network data includes: according to the ramp of the target highway entrance in the highway network data a route element and trajectory data of the vehicle, determining a current traffic flow on the ramp of the target expressway entrance; and a history car when the current traffic flow and the target highway entrance of the same segment are open The flows are compared to determine the transit status of the target highway entrance.

Optionally, the method further includes: transmitting a traffic status of the target highway entrance to the configured destination.

In a second aspect, a traffic information acquiring apparatus is provided, comprising: a receiving module configured to receive trajectory data transmitted by a target vehicle within a preset range from a target highway entrance; and a traffic state determining module configured to The trajectory data and the highway road network data acquire the traffic state of the target highway entrance.

Optionally, the traffic state determination module includes: a first acquisition submodule configured to acquire coordinates of the toll booth of the target highway entrance from the highway network data; a second acquisition submodule, And configured to acquire, from the highway road network data, coordinates of a crossroad intersection closest to the toll booth; and a third acquisition submodule configured to acquire the toll booth and the intersection crossing a straight line distance; a first vehicle set acquisition submodule configured to acquire, in the target vehicle, trajectory data within a preset time period within a first range in which the linear distance is a radius and the toll booth is a center of the circle a first set of vehicles; a first determining sub-module configured to determine a transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles.

Optionally, the first determining submodule includes: a first driving speed acquiring submodule configured to be configured according to the first vehicle set if the number of vehicles of the first vehicle set is greater than a first preset number The trajectory data of the vehicle acquires the traveling speed of the vehicle in the first vehicle set; the first probability determining submodule is configured to if the traveling speed of the vehicle in the first vehicle set is lower than the first preset speed And determining that the probability that the traffic state of the target highway entrance is closed is the first probability.

Optionally, the first determining submodule includes: a second vehicle set acquiring submodule configured to acquire the target vehicle if the number of vehicles in the first vehicle set is less than a first preset number, The trajectory data in the preset time period is at a radius of a preset distance, the toll booth is a second vehicle set in a second range of the center of the circle; and the third vehicle set acquisition sub-module is configured according to the first The direction information in the trajectory data of the vehicle in the two vehicle sets acquires the third vehicle set that enters the highway direction; the second probability determination submodule is configured to be if the number of vehicles in the third vehicle set is less than Setting a threshold, determining that the probability that the highway is closed is a second probability; and the second traveling speed acquisition submodule is configured to: if the number of vehicles in the third vehicle set is greater than the preset threshold, according to the a trajectory data of the vehicle in the third set of vehicles, determining a travel speed of the vehicle in the third set of vehicles; a third probability determination sub-module configured to if the third set of vehicles The driving speed of the vehicle is lower than the second preset speed, determining that the probability that the traffic state of the target highway entrance is closed is a third probability; and the fourth probability determining submodule is configured to be if the third vehicle If the driving speed of the vehicle in the collection is higher than the second preset speed, the probability that the traffic state of the highway entrance is closed is the fourth probability.

Optionally, the apparatus further includes: a vehicle state data acquiring module configured to acquire vehicle state data of the vehicle in the first vehicle set, the vehicle state data including at least one of: a fog light on state And a wiper open state; the first determining submodule configured to determine the target highway entrance based on the number of vehicles in the first set of vehicles and vehicle state data of the vehicle in the first set of vehicles Passage status.

Optionally, the traffic state determination module includes: a ramp traffic acquisition submodule configured to be based on a road line element of the ramp of the target highway entrance in the highway network data and a trajectory of the vehicle Data, determining a current traffic flow on the ramp of the target highway entrance; a second determining sub-module configured to record the current traffic flow and the traffic state of the target highway entrance of the simultaneous segment as open The traffic flow is compared to determine the traffic status of the target highway entrance.

Optionally, the apparatus further includes: a sending module configured to send a traffic state of the target highway entrance to the configured destination.

A third aspect provides a traffic information acquiring apparatus, including: a processor; a memory for storing processor executable instructions; wherein the processor is configured to receive a distance from a target highway entrance at a preset range Trajectory data transmitted by the target vehicle within the vehicle; and obtaining a traffic state of the target highway entrance according to the trajectory data and the highway network data.

Through the above technical solution, the traffic state of the target expressway entrance (whether closed or not) can be accurately obtained according to the trajectory data sent by the vehicle, so that the traveler can accurately obtain the travel state of the expressway without being affected by the expressway management party. The published information is not timely or the release failure affects the travel; and the disclosure can transmit the traffic status of the expressway entrance to the relevant vehicle, so that the traveler can know the traffic status of the expressway entrance in time, and is more convenient for the traveler's travel and route. planning.

Other features and advantages of the present disclosure will be described in detail in the detailed description which follows.

DRAWINGS

The drawings are intended to provide a further understanding of the disclosure, and are in the In the drawing:

1 is a schematic structural diagram of a traffic information acquiring system according to an embodiment of the present disclosure;

2 is a schematic flow chart of a method for acquiring traffic information according to an embodiment of the present disclosure;

3 is a format of a data packet sent by a server received by a server according to an embodiment of the present disclosure;

4 is a schematic flow chart of determining a traffic state of a target expressway entrance according to trajectory data of a vehicle and highway road network data in an embodiment of the present disclosure;

Figure 5 is a schematic illustration of a first range and a second range of an embodiment of the present disclosure;

6 is a schematic flow chart of determining a traffic state of a target highway entrance according to the number of vehicles in the first vehicle set according to an embodiment of the present disclosure;

7 is a schematic flow chart of determining a traffic state of a target highway entrance according to the number of vehicles in the first vehicle set in another embodiment of the present disclosure;

8 is a schematic flowchart of a method for acquiring traffic information according to another embodiment of the present disclosure;

9 is a schematic flow chart of determining a traffic state of a target expressway entrance according to trajectory data of a vehicle and highway road network data in another embodiment of the present disclosure;

10 is a schematic diagram of a server transmitting a traffic state of a highway entrance to a configured destination end according to an embodiment of the present disclosure;

11 is a schematic diagram of a data packet format used by a server to transmit a traffic state of a highway entrance to a preset vehicle according to an embodiment of the present disclosure;

FIG. 12 is a block diagram of a traffic information acquiring apparatus according to an embodiment of the present disclosure; FIG.

FIG. 13 is a block diagram of an apparatus for a traffic information acquisition method, according to an exemplary embodiment.

detailed description

The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are not to be construed

1 is a schematic structural diagram of a traffic information acquiring system according to an embodiment of the present disclosure.

The system includes a server 10 and one or more vehicles 20. The vehicle 20 includes a vehicle 21 and an in-vehicle terminal 22.

The vehicle 21 includes at least a wireless communication module 210, a GPS receiver 212, a processor 214, a memory 216, and the like. The memory 216 is used to store various data, including location data generated by the GPS receiver 212, program code run by the processor 214, operating system code, and the like. The processor 214 can run an operating system stored in the memory 216 to implement processes such as data processing, user interaction, and the like. The GPS receiver 212 is configured to process signals received by the antenna from GPS satellites to acquire trajectory data such as longitude, latitude, speed, altitude, and direction of travel of the vehicle 20. The wireless communication module 210 is configured to implement transmission and reception of signals, and implement data interaction between the vehicle 20 and the server 10.

The wireless communication module 210 can communicate with a server or other external device by using a protocol defined by a communication standard, such as a 5G communication standard, LTE (Long Term Evolution), WCDMA (Wideband Code Division Multiple Access), and a wideband code division. Multiple access), GSM (Global System for Mobile Communication), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), and the like.

In addition, the vehicle 21 may also include a multimedia component, which may include a screen and an audio component. Wherein, the screen may be a touch screen, and the audio component is used to output and/or input an audio signal. For example, the audio component can include a microphone for receiving an external audio signal. The received audio signal may be further stored in memory 216 or transmitted via wireless communication module 210. The audio component also includes at least one speaker for outputting an audio signal.

The vehicle-mounted terminal 22 is connected to the CAN bus of the vehicle 20 for acquiring vehicle body state data of the vehicle in real time from the CAN network. Further, the in-vehicle terminal 22 is also connected to the data interface of the vehicle 21, and transmits the vehicle body state data acquired through the CAN bus to the vehicle 21. The body state data includes one or more of the following data: the wiper open state, the wiper frequency, the light on state, and the fog light on state.

In an embodiment of the present disclosure, the wireless communication module 210 may transmit the trajectory data of the vehicle 20 and the vehicle body state data to the server 10 under the control of the processor 214.

2 is a schematic flowchart of a method for acquiring traffic information according to an embodiment of the present disclosure. The method is applied to the server and includes the following steps:

In step S21, trajectory data transmitted by the target vehicle whose distance from the target highway entrance is within a preset range is received.

In an embodiment of the present disclosure, the preset range may be set according to an administrative area setting or according to a distance, for example, setting a city, a district, and the like to which the target highway entrance belongs to a preset range, or a range of 10 Km from the target highway entrance. Set to the preset range.

As described above, the trajectory data of the vehicle includes data such as the longitude, dimension, speed, direction, and altitude of the vehicle. As described above, the target vehicle can collect the trajectory data of the vehicle through the vehicle 21, and include the collected trajectory data in the data packet and send it to the server.

Referring to FIG. 3, in the embodiment of the present disclosure, a format of a data packet sent by a server received by a server is shown. The data package includes: a header portion and a body portion.

The header portion includes a protocol header field for indicating related information of the communication protocol, for example, a destination address, a source address, a packet length, and the like.

The body part includes: a command ID field, a car number field, a track data field, and a body state field. Wherein, since the number corresponding to each instruction is different, the command ID field includes the number corresponding to the instruction to distinguish different instructions. For example, if the command ID field is 101, it represents an instruction to upload data. The vehicle number field is the vehicle's identification number, network card number, or IMEI (International Mobile Equipment Identity).

The trajectory data field may include one or more of the following fields: longitude field, latitude field, velocity field, direction field, height field, time field, and the like. As described above, the longitude, latitude, speed, direction, and altitude are obtained by the processor 214 of the vehicle based on the information received by the GPS receiver 212. The time may be the time at which the GPS receiver 212 acquired the trajectory data.

The body status field may include one or more of the following fields: wiper status field, wiper frequency field, light on status field, and fog light status field, and the like. As described above, the wiper state, the wiper frequency, the light-on state, and the fog lamp state are acquired by the vehicle-mounted terminal 22 of the vehicle 21 via the CAN bus.

The packet format shown in FIG. 3 is merely exemplary, and other forms of packet formats may be used in practice. In some embodiments, the body state field in the data packet is not required and the vehicle may only send track data to the server. Referring to Figure 3, the length of each field can be adjusted as needed. It should be understood that the fields in the data packet can be adaptively adjusted, and data can be removed or not written for unnecessary fields to improve transmission efficiency.

The vehicle collects and transmits trajectory data and body state data at regular intervals. For example, data acquisition and transmission can be performed every 1 second. After receiving the data packet, the server 10 obtains the required information from the corresponding field.

In step S22, the traffic state of the target expressway entrance is acquired based on the trajectory data and the highway road network data.

In an embodiment of the present disclosure, the highway road network data includes: a road line element of a highway; a station element of a toll station (or a card issuing station) on the highway; and a preset range around the highway exit and the entrance Road line elements such as provincial roads, national roads, and county roads.

In the embodiment of the present disclosure, the highway road network data may be road network data of a highway in a preset area, for example, within a preset administrative area (for example, a national administrative region, a provincial administrative region, or a municipal administrative region). Highway.

In one embodiment, highway network data may be obtained from electronic map data. For example, the road line elements of the expressway are obtained from the layer data including the expressway in the electronic map; and the road line elements of the national road are obtained from the layer data including the national road in the electronic map.

In an embodiment of the present disclosure, the road line element is a coordinate set composed of longitude coordinates and latitude coordinates of a plurality of position points acquired from the electronic map data. Among them, the road line elements of the expressway include the road line elements of the main road of the expressway and the road line elements of the ramp.

The site elements of the toll booth include at least coordinate information of the toll stations of the respective highway entrances obtained from the electronic map data. In some embodiments, the site element of the toll booth also includes the name of the toll booth.

When the expressway is exposed to risks such as rain, snow, fog or construction, it will be closed when there are traffic risks and traffic safety hazards. The closure of the highway can be achieved by closing the entrance to the highway. In some embodiments, the entrance to the highway is connected to a toll booth or card issuing station, etc., so that closing the toll booth or issuing station can achieve a closed highway.

In one embodiment, when the highway is closed, the vehicle that chooses to travel on the closed highway has two conditions: one is that the vehicle is stranded at the toll booth; and the other is, if it is on the way to the toll booth The identification plate (for example, a sign for informing the traveler that the front highway entrance has been closed), the vehicle selects other roads to travel, and no longer travels to the toll booth.

Referring to FIG. 4 and FIG. 5, in an embodiment of the present disclosure, the step of determining the traffic state of the target highway entrance according to the trajectory data of the vehicle and the highway network data includes:

In step S41, coordinates (x _F , y _F ) of a toll booth F of the target expressway entrance G are acquired from the highway network data. Where x _F and y _F are the longitude and dimension of the toll booth F, respectively.

In step S42, the coordinates (x _R , y _R ) of the intersection intersection R closest to the toll gate F are acquired from the highway network data. Where x _R and y _R are the longitude and dimension of the intersection R, respectively.

In step S43, the linear distance D of the toll booth F and the intersection road intersection R is acquired.

In step S44, in the target vehicle, the trajectory data in the preset time period is at a radius of the straight line distance D, and the toll station F is the first vehicle set in the first range of the center.

In the embodiment of the present disclosure, if the linear distance D is greater than 5 Km, the linear distance D is 5 Km. The preset time period is set to improve the accuracy of the traffic state judgment of the target highway entrance. The preset time period can be set according to actual conditions, for example, set from 6:00 am to 7:00 am.

In step S45, the traffic state of the target expressway entrance is determined based on the number of vehicles in the first vehicle set.

Referring to FIG. 6, in one embodiment, the step of determining the transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles includes:

In step S61, if the number of vehicles of the first vehicle set is greater than the first preset number, the traveling speed of the vehicle in the first vehicle set is acquired according to the trajectory data of the vehicle in the first vehicle set.

The first preset number can be set to a value greater than one.

In step S62, if the traveling speed of the vehicle in the first vehicle set is lower than the first preset speed, the probability that the traffic state of the target expressway entrance is closed is the first probability.

In one embodiment, the first probability can be 90%. The first preset speed can be set to 2 Km/h.

In an embodiment of the present disclosure, if the number of vehicles in the first vehicle set is greater than the first preset number (eg, 2 vehicles), the traveling speed of the vehicle is acquired according to the trajectory data of the vehicle, if the vehicle in the first vehicle set The driving speed is lower than the first preset speed (for example, 2Km), and the probability that the traffic state of the highway entrance is closed is the first probability. It should be understood that the first preset speed can be set and adjusted according to the actual situation.

Thus, in the case where the vehicle is staying at the toll booth, the closed or open state of the highway entrance can be determined based on the number of vehicles in the first set of vehicles and the traveling speed of the vehicle.

Referring to FIG. 7, in another embodiment of the present disclosure, the step of determining the traffic state of the target highway entrance according to the number of vehicles in the first vehicle set includes:

In step S71, if the number of vehicles in the first vehicle set is less than the first preset number, in the target vehicle, the trajectory data in the preset time period is at a radius of the preset distance, and the toll station is the second center of the center. A second set of vehicles within range.

The preset distance is greater than the linear distance D, and in one embodiment, the preset distance can be set to 5 Km.

In step S72, based on the direction information in the trajectory data of the vehicle in the second vehicle set, the third vehicle set in which the driving direction is the entering highway is acquired.

In step S73, if the number of vehicles in the third vehicle set is less than a preset threshold, the probability that the highway is closed is determined to be the second probability.

In one embodiment, the preset threshold may be set to 2 due to possible non-social vehicles such as police cars, vehicles performing special tasks, and the like.

In one embodiment, the second probability is 95%.

In step S74, if the number of vehicles in the third vehicle set is greater than a preset threshold, the traveling speed of the vehicle in the third vehicle set is determined according to the trajectory data of the vehicle in the third vehicle set.

In step S75, if the traveling speed of the vehicle in the third vehicle set is lower than the second preset speed, it is determined that the probability that the traffic state of the target expressway entrance is closed is the third probability.

In one embodiment, the second preset speed may be set to 2 Km/h, and when the speed of the vehicle is lower than the preset speed, the vehicle is in a state of approaching parking.

In one embodiment, the third probability is 95%.

In step S76, if the number of vehicles in which the traveling speed of the vehicle in the third vehicle set is higher than the second preset speed is greater than the second preset number, the probability that the traffic state of the highway entrance is closed is the fourth probability.

In one embodiment, the second predetermined number can be set to a value greater than one.

In one embodiment, the fourth probability is 50%.

Referring to FIG. 8 , in order to increase the accuracy of the determination of the traffic state of the highway entrance, in an embodiment of the present disclosure, the method for acquiring traffic information further includes:

In step S81, acquiring vehicle state data of the vehicle in the first vehicle set, the vehicle state data including at least one of the following: a fog light on state and a wiper on state;

In step S82, the traffic state of the target expressway entrance is determined based on the number of vehicles in the first vehicle set and the vehicle state data of the vehicle in the first vehicle set.

If the proportion of the vehicle in which the fog light is on is greater than the first preset ratio and/or the proportion of the vehicle in which the wiper is on is greater than the second preset ratio, according to the judgment result of the steps of FIG. 6 or FIG. 7 above, The probability that the first probability, the second probability, the third probability, or the fourth probability is increased by the preset value is taken as the probability that the traffic state of the target highway entrance G is closed.

In one embodiment, the first preset ratio may be 60%, the second preset ratio may be 60%, and the preset value may be any value between 3% and 5%. For example, if the ratio of the vehicle in which the fog lamp is turned on exceeds 60% in the vehicle within the range of 5 Km from the toll gate F, the probability obtained by the above-described steps of FIG. 6 or FIG. 7 is added by 3% to 5%. For example, according to the steps shown in FIG. 7 above, it is determined in step S75 that the probability that the highway entrance G is closed is the third probability of 95%, and the fog lamp is turned on in the vehicle within the range of 5 Km from the toll booth F. If the proportion of the vehicle exceeds 60%, the probability that the finally obtained highway entrance G is closed is 98% (the third probability is 95% + the preset value is 3%).

It should be understood that the value of the first probability, the second probability, the third probability, and the fourth probability after increasing the preset value should not be greater than 100%, and if greater than 100%, the maximum value of the probability is 100%. In an embodiment of the present disclosure, when the probability that the traffic state of the highway entrance is closed is greater than a preset probability (for example, 90%), it is determined that the traffic state of the highway entrance is closed; and when the traffic state of the highway entrance is closed When the probability of being closed is less than the preset probability, it is determined that the traffic state of the highway entrance is open.

In another embodiment, since the target highway entrance G is closed, no vehicle will travel on the ramp connecting the target highway entrance G with the highway main road. Therefore, when the trajectory data uploaded by the vehicle is monitored, the target highway entrance G connected to the closed highway and the main road of the highway are monitored, and when the vehicle is traveling, the traffic state of the target highway entrance is determined to be closed. Changed to the open state.

Referring to FIG. 9, in another embodiment of the present disclosure, the step of determining the traffic state of the highway entrance according to the trajectory data of the vehicle and the highway network data includes:

In step S91, the current traffic volume on the ramp of the target expressway entrance G is determined based on the road line element of the ramp of the target expressway entrance G and the trajectory data of the vehicle in the highway network data.

The current traffic flow is the number of vehicles passing within the preset time period.

In step S92, the current traffic flow is compared with the traffic state of the target highway entrance at the same time as the historical traffic flow at the time of opening to determine the traffic state of the highway entrance G.

For example, if the current traffic volume is the number of vehicles on the ramp of the highway entrance G from 8:00 am to 8:20 am, the access state of the highway entrance G from 8:00 am to 8:20 am is opened. Historical traffic is compared to current traffic. The historical traffic flow is obtained in the past period of time (for example, 1 month) according to the trajectory data uploaded by the passing vehicle according to the traffic state of the highway entrance G being opened.

In an embodiment of the present disclosure, if the difference between the number of vehicles passing within the preset time period and the historical traffic volume of the same period is within a preset range, the traffic state of the target highway entrance G and the historical passage of the simultaneous segment The status is the same. The preset range can be 0-50%. For example, if the current vehicle volume is 3 vehicles/minute, and the historical traffic volume of the segment is 5 vehicles/minute, and the traffic status of the target highway entrance is open at the same time, the target can be determined. The current traffic status of the highway entrance is open.

If the difference between the number of vehicles passing in the preset time period and the traffic state of the target highway entrance at the same time is greater than the preset range, the current state of the target highway entrance may be determined to be closed.

According to the above embodiment, the traffic state of the target highway entrance G can be obtained, and in the same way, all highway entrances within a specific range can be obtained (for example, all highway entrances within a country's territory, within an administrative province) Access to all highway entrances). If the traffic state of a certain highway entrance is closed, the closing start time and the opening start time are determined. The start time may be a time when the highway entrance is closed according to the data packet sent by the vehicle and the highway network data. The opening start time may be a time when the highway entrance is opened according to the data packet sent by the vehicle and the highway network data. When the traffic state of the highway entrance changes, the traffic status and the start time of the closing or opening are updated in real time. Thus, the traffic status table of the highway entrance can be obtained, as shown in Table 1. In some embodiments, a table in which the traffic state is closed and a table in which the traffic state is open may be separately established according to the traffic state, whereby when the traffic state of a certain highway entrance is changed, for example, from a closed state to In the open state, the information is deleted in the original table (the closed state is closed), and the information is added in the other table (the open state is open).

Table 1

Therefore, the traffic information acquisition method of the embodiment of the present disclosure can accurately acquire the traffic state of the target highway entrance (whether closed or not) according to the trajectory data sent by the vehicle, so that the traveler can accurately obtain the travel state of the expressway. It will not affect the travel due to the information released by the expressway management party not being timely or the release failure. The closing time of the highway entrance can be recorded, and the closed highway entrance can be continuously tracked and analyzed to determine whether the highway entrance is reopened and the opening time is recorded.

In an embodiment of the present disclosure, the traffic information acquisition method further includes: transmitting a traffic state of the target highway entrance to the configured destination end.

Referring to FIG. 10, in the embodiment of the present disclosure, the configured destination end may be a preset vehicle or a preset mobile terminal. The traffic status of the target highway entrance can be sent to the preset vehicle or the preset mobile terminal. It should be understood that after obtaining the traffic state of the plurality of expressway entrances, the traffic status of the plurality of expressway entrances may be sent to the preset vehicle or the preset mobile terminal.

In an embodiment, the traffic state of one or more highway entrances may be selectively sent to the preset vehicle according to the user's requirements, or the traffic state table of the obtained highway entrance may be sent to the preset vehicle. . In one embodiment, the preset vehicle may be a vehicle within a specific city range, for example, a vehicle within the city A range, and the selectable highway entrance includes X1, X2, X3, X4, and X5, then the X1- The traffic status of X5 is sent to vehicles in the city A range.

In another embodiment, the preset vehicle may be a vehicle within a set distance from the highway entrance, for example, for the highway entrance X1, its traffic status may be transmitted to a vehicle having a distance of 10 Km from the highway entrance X1. This makes it possible for these vehicles to know the traffic status of the highway entrance X1 in advance and to make a route plan for travel.

In some embodiments, the preset vehicle may be a vehicle in need. A vehicle in need can send a customized request to the server by customizing the message. The customization request may include: a highway entrance name that needs to know the traffic status, a custom end time, and the like. Thus, the server can send the traffic status of the relevant highway entrance to the customized vehicle in real time during the customization according to the customized request. When the customization time is over or the end customization information sent by the vehicle is received, the traffic state information of the highway entrance is no longer sent to the vehicle.

In some embodiments, the reminder information may also be sent to the corresponding vehicle only when the traffic state of the highway entrance is closed, to remind the traveler to plan the travel route in advance.

After receiving the traffic state information transmitted by the server, the vehicle 21 of the vehicle 20 displays the traffic state information through the screen and/or outputs the traffic state information in the form of sound through the speaker of the audio component under the control of the processor 214. Thereby, the traveler is informed of the traffic status of the highway entrance in time.

In an embodiment of the present disclosure, the preset mobile terminal may include, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (Personal Digital Assistant), a PAD (Tablet), a PMP (Portable Multimedia Player). , navigation devices, etc.

In this embodiment, the traffic state information is sent to the preset mobile terminal, so that the pedestrian can obtain the traffic state of the highway entrance without starting the vehicle, and plan the travel in advance to provide more accurate and timely credibility for the user travel. Information, giving the convenience of the traveler.

In one embodiment, the server distribution program also provides an access interface for the Internet, and other App programs accessing the interface can obtain highway traffic status information, thereby providing more accurate and timely trusted highway information for the user to travel.

Referring to FIG. 11, in the embodiment of the present disclosure, a data packet format is adopted when a server sends a traffic state of a highway entrance to a preset vehicle. The packet includes a header portion and a body portion. The header portion includes a protocol header field. The package part includes: a command ID field, a vehicle number field, a number field, a highway name field, a toll station name field, a traffic status field, and a time field.

In one embodiment, the number field indicates the number of closed highway entrances, and correspondingly, the highway name field includes the name of the closed highway, the toll station name field includes the name of the closed highway entrance, and the traffic status field It is "1" (indicating a closed state), and the time field is the time at which each closed highway entrance is closed.

In other embodiments, the number field indicates the number of open highway entrances. Correspondingly, the highway name field includes the name of the opened highway, and the toll station name field includes the name of the opened highway entrance, and the traffic status. The field is "0" (indicating the open state), and the time field is the time when each closed highway entrance is opened.

In some embodiments, when the server receives the customization request sent by the vehicle, the traffic status information of the corresponding highway entrance may be transmitted to the vehicle within the customized time period according to the highway entrance name in the customized request. Thus, the car number field in the packet shown in FIG. 11 is the car number of the vehicle that transmitted the customization request. The number field can be set to null. The highway name field is the customized highway entrance name, and the toll station name field is the name of the toll station corresponding to the customized highway entrance.

It should be understood that the packet format shown in FIG. 11 is merely exemplary, and the server can adjust the format of the data packet according to requirements or adjust various fields in the data packet.

When the traffic state is transmitted to the preset mobile terminal, the car number field in the data packet shown in FIG. 11 may be removed or set to null.

Correspondingly, referring to FIG. 12, an embodiment of the present disclosure further provides a traffic information acquiring apparatus. The traffic information obtaining device 1200 includes:

The receiving module 1201 is configured to receive trajectory data sent by the target vehicle whose distance from the target highway entrance is within a preset range;

The traffic state determination module 1202 is configured to acquire a traffic state of the target highway entrance according to the trajectory data and the highway network data.

In one embodiment, the transit state determination module 1202 includes:

a first acquisition submodule configured to acquire coordinates of the toll booth of the target highway entrance from the highway road network data; and a second acquisition submodule configured to be from the highway road network data Obtaining coordinates of a crossroad intersection closest to the toll booth; a third acquisition submodule configured to acquire a linear distance between the toll booth and the intersection intersection; the first vehicle collection acquisition submodule, Configuring, in the target vehicle, the trajectory data in the preset time period is a first vehicle set within a first range of the center of the circle at the radius of the linear distance; the first determining sub-module, It is configured to determine a transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles.

In one embodiment, the first determining submodule includes: a first driving speed acquisition submodule configured to be configured according to the first vehicle set if the number of vehicles of the first vehicle set is greater than a first preset number The trajectory data of the vehicle acquires the traveling speed of the vehicle in the first vehicle set; the first probability determining submodule is configured to if the traveling speed of the vehicle in the first vehicle set is lower than the first preset speed And determining that the probability that the traffic state of the target highway entrance is closed is the first probability.

In one embodiment, the first determining sub-module includes: a second vehicle set acquiring sub-module configured to acquire the target vehicle if the number of vehicles in the first vehicle set is less than a first preset number, The trajectory data in the preset time period is at a radius of a preset distance, the toll booth is a second vehicle set in a second range of the center of the circle; and the third vehicle set acquisition sub-module is configured according to the first The direction information in the trajectory data of the vehicle in the two vehicle sets acquires the third vehicle set that enters the highway direction; the second probability determination submodule is configured to be if the number of vehicles in the third vehicle set is less than Setting a threshold, determining that the probability that the highway is closed is a second probability; and the second traveling speed acquisition submodule is configured to: if the number of vehicles in the third vehicle set is greater than the preset threshold, according to the a trajectory data of the vehicle in the third set of vehicles, determining a travel speed of the vehicle in the third set of vehicles; a third probability determination sub-module configured to be the third vehicle If the running speed of the vehicle in the middle is lower than the second preset speed, determining that the traffic state of the target expressway entrance is closed is a third probability; and the fourth probability determining submodule is configured to be If the running speed of the vehicle in the three-vehicle collection is higher than the second preset speed, the probability that the traffic state of the highway entrance is closed is the fourth probability.

In one embodiment, the apparatus 1200 further includes: a vehicle state data acquisition module configured to acquire vehicle state data of the vehicle in the first set of vehicles, the vehicle state data including at least one of: a fog light on a state and a wiper open state; the first determining submodule configured to determine the target highway entrance based on a number of vehicles in the first set of vehicles and vehicle state data of a vehicle in the first set of vehicles Passage status.

In one embodiment, the transit state determination module 1202 includes: a ramp traffic acquisition sub-module configured to map a road line element of the ramp of the target highway entrance in the highway network data and the vehicle Trajectory data, determining a current traffic flow on a ramp of the target highway entrance; a second determining sub-module configured to set the current traffic flow to a transit state of the target highway entrance of the simultaneous segment to be open Historical vehicle traffic is compared to determine the traffic status of the target highway entrance.

In one embodiment, the apparatus 1200 further includes a transmitting module configured to transmit a traffic status of the target highway entrance to the configured destination.

With regard to the apparatus in the above embodiments, the specific manner in which the respective modules perform the operations has been described in detail in the embodiment relating to the method, and will not be explained in detail herein.

FIG. 13 is a block diagram of an apparatus 1300 for a traffic information acquisition method, which may be a server, according to an exemplary embodiment. As shown, the apparatus 1300 can include a processor 1301, a memory 1302, a multimedia component 1303, an input/output (I/O) interface 1304, and a communication component 1305.

The processor 1301 is configured to control the overall operation of the apparatus 1300 to complete all or part of the steps of the foregoing traffic information acquisition method. Memory 1302 is for storing operating systems, various types of data to support operations at the device 1300, such as may include instructions for any application or method operating on the device 1300, and application related data. The memory 1302 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read only memory ( Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read Only Read-Only Memory (ROM), magnetic memory, flash memory, disk or optical disk.

The multimedia component 1303 can include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and/or input an audio signal. For example, the audio component can include a microphone for receiving an external audio signal. The received audio signal may be further stored in memory 1302 or transmitted via communication component 1305. The audio component also includes at least one speaker for outputting an audio signal. The I/O interface 1304 provides an interface between the processor 1301 and other interface modules, such as a keyboard, a mouse, a button, and the like. These buttons can be virtual buttons or physical buttons. Communication component 1305 is used for wired or wireless communication between the device 1300 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 1305 can include: Wi-Fi module, Bluetooth module, NFC module.

In an exemplary embodiment, the device 1300 may be configured by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), and digital signal processing devices (Digital Signal Processors). Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor or other electronic components For performing the above-described traffic information acquisition method.

In another exemplary embodiment, there is also provided a computer program product comprising a computer program executable by a programmable device, the computer program having when executed by the programmable device A code portion for performing the above-described traffic information acquisition method.

In another exemplary embodiment, there is also provided a non-transitory computer readable storage medium comprising instructions, such as a memory 1302 including instructions executable by processor 1301 of apparatus 1300 to perform the above-described traffic information acquisition. method. By way of example, the non-transitory computer readable storage medium can be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

Any process or method description in a flowchart or otherwise described in the embodiments of the present disclosure may be understood to represent code that includes one or more executable instructions for implementing the steps of a particular logical function or process. Modules, segments or portions, and the scope of the embodiments of the present disclosure includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an inverse order depending on the functions involved, not in the order shown or discussed. This should be understood by those skilled in the art of the embodiments of the present disclosure.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical idea of the present disclosure. These simple variations are all within the scope of the disclosure.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not be further described in various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made as long as it does not deviate from the idea of the present disclosure, and should also be regarded as the disclosure of the present disclosure.

Claims (15)

A method for acquiring traffic information, comprising: Receiving trajectory data transmitted by the target vehicle within a preset range from the target highway entrance; Obtaining a traffic state of the target highway entrance according to the trajectory data and the highway road network data. The method according to claim 1, wherein the determining the transit state of the target expressway entrance based on the trajectory data and the highway network data comprises: Obtaining coordinates of the toll booth of the target highway entrance from the highway road network data; Obtaining, from the highway road network data, coordinates of a crossroad intersection closest to the toll booth; Obtaining a linear distance between the toll booth and the intersection road intersection; Obtaining, in the target vehicle, the trajectory data in the preset time period is a first vehicle set within a first range of the center of the center of the circle with the linear distance as a radius; A transit state of the target expressway entrance is determined based on the number of vehicles in the first set of vehicles. The method of claim 2, wherein the determining the transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles comprises: If the number of vehicles of the first vehicle set is greater than the first preset number, acquiring a travel speed of the vehicle in the first vehicle set according to trajectory data of the vehicle in the first vehicle set; If the traveling speed of the vehicle in the first vehicle set is lower than the first preset speed, determining that the traffic state of the target expressway entrance is closed is the first probability. The method of claim 2, wherein the determining the transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles comprises: If the number of vehicles in the first vehicle set is less than the first preset number, the trajectory data in the preset time period is obtained by using a preset distance as a radius, and the toll station is a center. a second set of vehicles within the second range; Obtaining, according to direction information in the trajectory data of the vehicle in the second vehicle set, a third vehicle set in which the driving direction is entering the expressway; If the number of vehicles in the third vehicle set is less than a preset threshold, determining that the highway is closed is a second probability; Determining, according to the trajectory data of the vehicle in the third vehicle set, the traveling speed of the vehicle in the third vehicle set if the number of vehicles in the third vehicle set is greater than the preset threshold; If the traveling speed of the vehicle in the third vehicle set is lower than the second preset speed, determining that the traffic state of the target highway entrance is closed is a third probability; If the running speed of the vehicle in the third vehicle set is higher than the second preset speed by the second preset number, the probability that the traffic state of the highway entrance is closed is the fourth probability. The method of claim 2, wherein the method further comprises: Acquiring vehicle state data of the vehicle in the first vehicle set, the vehicle state data including at least one of: a fog light on state and a wiper on state; A transit state of the target expressway entrance is determined based on the number of vehicles in the first set of vehicles and vehicle status data of the vehicles in the first set of vehicles. The method according to claim 1, wherein the determining the transit state of the target expressway entrance based on the trajectory data and the highway network data comprises: Determining a current traffic flow on the ramp of the target expressway entrance according to the road line element of the ramp of the target expressway entrance and the trajectory data of the vehicle in the highway road network data; Comparing the current traffic volume with the traffic state of the target highway entrance of the same segment as the historical traffic flow at the time of opening to determine the traffic state of the target highway entrance. The method according to any one of claims 1 to 6, wherein the method further comprises: Sending the traffic status of the target highway entrance to the configured destination. A traffic information acquiring device, comprising: a receiving module configured to receive trajectory data transmitted by a target vehicle within a preset range from a target highway entrance; The traffic state determining module is configured to acquire a traffic state of the target highway entrance according to the trajectory data and the highway road network data. The device according to claim 8, wherein the traffic state determination module comprises: a first obtaining submodule configured to acquire coordinates of the toll booth of the target highway entrance from the highway road network data; a second obtaining submodule configured to acquire, from the highway road network data, coordinates of a crossroad crossing that is closest to the toll booth; a third obtaining submodule configured to acquire a linear distance between the toll booth and the intersection road intersection; a first vehicle set acquisition submodule configured to acquire, in the target vehicle, trajectory data within a preset time period at a first radius within a first range of the center of the toll center set; The first determining submodule is configured to determine a transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles. The apparatus according to claim 9, wherein the first determining submodule comprises: a first travel speed acquisition submodule configured to acquire, according to the trajectory data of the vehicle in the first vehicle set, the first vehicle set if the number of vehicles of the first vehicle set is greater than a first preset number Driving speed of the vehicle; a first probability determining submodule configured to determine that a probability that the traffic state of the target expressway entrance is closed is first if the traveling speed of the vehicle in the first vehicle set is lower than the first preset speed Probability. The apparatus according to claim 9, wherein the first determining submodule comprises: a second vehicle set acquisition submodule configured to: if the number of vehicles in the first vehicle set is less than a first preset number, acquiring trajectory data in the target time zone in the target time zone The distance is a radius, and the toll booth is a second vehicle set in a second range of the center of the circle; a third vehicle set acquisition submodule configured to acquire, according to direction information in the trajectory data of the vehicle in the second vehicle set, a third vehicle set whose driving direction is entering the expressway; a second probability determining submodule configured to determine that the probability that the highway is closed is a second probability if the number of vehicles in the third set of vehicles is less than a preset threshold; a second travel speed acquisition submodule configured to determine the third vehicle according to trajectory data of the vehicle in the third vehicle set if the number of vehicles in the third vehicle set is greater than the preset threshold The speed of the vehicle in the collection; a third probability determining submodule configured to determine, if the traveling speed of the vehicle in the third vehicle set is lower than the second preset speed, determining that the traffic state of the target expressway entrance is closed Probability a fourth probability determining submodule configured to determine a traffic state of the highway entrance if the number of vehicles of the vehicle in the third vehicle set that is higher than the second preset speed is greater than the second preset number The probability of being closed is the fourth probability. The device according to claim 9, wherein the device further comprises: a vehicle state data acquiring module configured to acquire vehicle state data of the vehicle in the first vehicle set, the vehicle state data including at least one of: a fog light on state and a wiper on state; The first determining sub-module is configured to determine a transit state of the target expressway entrance based on the number of vehicles in the first set of vehicles and vehicle state data of the vehicle in the first set of vehicles. The device according to claim 8, wherein the traffic state determination module comprises: a ramp traffic acquisition submodule configured to determine a lane of the target highway entrance based on a road line element of the ramp of the target highway entrance and the trajectory data of the vehicle in the highway network data Current traffic flow; And a second determining submodule configured to compare the current traffic volume with a historical traffic flow of the target highway entrance of the simultaneous segment at the time of opening to determine a traffic state of the target highway entrance. The device according to any one of claims 8 to 13, wherein the device further comprises: And a sending module configured to send the traffic status of the target highway entrance to the configured destination. A traffic information acquiring device, comprising: processor; a memory for storing processor executable instructions; The processor is configured to receive trajectory data transmitted by a target vehicle within a preset range from a target highway entrance; and acquire the target highway entrance according to the trajectory data and highway network data. Passage status.

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