WO2014139377A1

WO2014139377A1 - Method and device for monitoring road flow

Info

Publication number: WO2014139377A1
Application number: PCT/CN2014/073082
Authority: WO
Inventors: 杨凡
Original assignee: 华为技术有限公司
Priority date: 2013-03-14
Filing date: 2014-03-07
Publication date: 2014-09-18
Also published as: CN103208189B; CN103208189A

Abstract

Disclosed are a method and device for monitoring road flow. The method comprises: acquiring an activation set cell of at least one target communication device, wherein the target communication device is a communication device located in a vehicle; selecting a target locating point of each target communication device from road locating points and using the target locating point as the location of the target communication device in the road; the cell of the target locating point assembling the locating points that have the highest coincidence degree with the activation set cell of the target communication device; and monitoring the flow of the road in accordance with the location of the at least one target communication device in the road. Accordingly, also provided is a device for monitoring road flow. The embodiments of the present invention can realize the flow monitoring of intelligent transportation with a low cost and high accuracy.

Description

Method and device for monitoring road flow

This application claims priority to Chinese Patent Application No. 201310081200.X, entitled "A Method for Monitoring Road Flows and Equipment", filed on March 14, 2013, the entire contents of which are incorporated by reference. In this application.

Technical field

The invention relates to the field of intelligent transportation, and in particular relates to a method and a device for monitoring road traffic. Background technique

At present, the traffic monitoring of intelligent traffic mainly monitors the traffic of the road section through a camera deployed on the traffic line, or infers the traffic volume of the road section through the in-vehicle GPS device installed in the taxi. For the use of camera monitoring, not only need to install a large number of monitoring equipment, but also a large number of storage devices to store massive data, the use of high cost; for vehicle GPS traffic monitoring, on the one hand, it requires three aspects of GPS data, and A sampling method that results in low accuracy of traffic monitoring.

In summary, the current intelligent traffic flow monitoring technology achieves high cost and low accuracy. Summary of the invention

The embodiment of the invention provides a method and a device for monitoring road traffic, which can realize traffic monitoring of intelligent traffic with low cost and high accuracy.

In one aspect, an embodiment of the present invention provides a method for monitoring road traffic, including: acquiring an active set cell of at least one target communication device, where the target communication device is a communication device located in a vehicle;

Determining, from a positioning point of the road, a target positioning point of each of the target communication devices, and using the target positioning point as a location where the target communication device is located in the road; wherein, the target positioning An address point of the cell set of the point and the active set cell of the target communication device having the highest degree of coincidence;

The traffic of the road is monitored based on the location of the at least one target communication device in the road. In a possible implementation manner, the target location point of each target communication device is selected from the location points of the road, and the target location point is used as the target communication device in the road. Before the location, the method further includes:

Calculating a coordinate value of a projection point on the road, the projection point being a pre-designated base station to a position point on the road in a shortest route of the road;

Calculating an average coordinate value of a projection point of each road segment in the road, and using a position point of the average coordinate value as an anchor point of the road segment, where the average coordinate value is an average of coordinate values of all projection points of the road segment Value

The set of cells corresponding to all the projection points of each road segment is used as the cell set of the road segment positioning point, and the cell corresponding to the projection point refers to the cell included in the base station that is closest to the projection point and covers only the projection point. .

In conjunction with one possible implementation of the aspect, in two possible implementations, the calculating coordinate values of the projection points on the road includes:

Calculating a coordinate value of a pre-designated base station to a location point on the road in the shortest line of the road;

Selecting, from the pre-designated base station, a location point on the road in the shortest line of the base station that meets the preset condition to the road as a projection point of the road;

The pre-condition is that the shortest distance from the base station to the road is greater than or equal to the maximum radiation radius of the base station.

In combination with one possible implementation of one aspect or two possible implementations of one aspect, in the three possible implementation manners, the set of cells corresponding to all projection points of each road segment After the cell set as the location point of the road segment, the method further includes:

Selecting a positioning communication device for each positioning point of the road in a preset period, where the positioning communication device refers to a communication device with the highest aggregation of the cell set of the positioning point and the active set cell;

Selecting a target active set cell of the positioning point from an active set cell of the positioning communication device of each positioning point, and updating the target active set cell to a cell set of the positioning point, where the target active set cell refers to the The active set cell with the highest probability occurs in all active set cells of the positioning communication device of the positioning point.

a combination of one or the other, or a possible implementation The two possible implementation manners, in the four possible implementation manners, the acquiring the active set cell of the at least one target communication device includes:

Acquiring an active set cell of multiple time points of each of the target communication devices;

And selecting, by the location point of the road, a target location point of each of the target communication devices, and using the target location point as a location of the target communication device in the road, including:

Selecting, from the positioning points of the road, a target positioning point of each of the target communication devices at each of the time points, and using the target positioning point as the target communication device at the time point in the road s position;

The monitoring, according to the location of the at least one target communication device in the road, the traffic of the road, including:

Calculating a target road segment moving speed of the at least one target communication device in the road, and using the moving speed as a speed of the vehicle traveling in the target road segment, wherein the target road segment is two of the target positioning points Intersection; and/or

The number of vehicles in each of the road segments is calculated based on the location of the at least one target communication device in the road.

In combination with the four possible implementations of the first aspect, in the five possible implementation manners, the calculating a target road segment moving speed of the at least one communication in the road, and using the moving speed as The speed at which the vehicle travels in the target road segment includes:

Selecting, from the at least one target communication device, a first communication device whose target location point is a continuous location point in the road;

Calculating a target road segment moving speed of the first communication device in the road, and using the moving speed as a speed at which the vehicle travels in the target road segment.

The second embodiment of the present invention provides a device for monitoring road traffic, including: an acquiring unit, a selecting unit, and a monitoring unit, where:

The acquiring unit is configured to acquire an active set cell of at least one target communication device, where the target communication device is a communication device located in the vehicle;

The first selection unit is configured to select a target positioning point of each target communication device from the positioning points of the road, and use the target positioning point as a location of the target communication device in the road Wherein the cell set of the target positioning point coincides with the active set cell of the target communication device The highest degree of positioning;

The monitoring unit is configured to monitor traffic of the road according to a location of the at least one target communication device in the road.

In a possible implementation manner, the device further includes:

a first calculating unit, configured to calculate a coordinate value of a projection point on the road, where the projection point refers to a position point on the road in a shortest line of the pre-designated base station to the road;

a second calculating unit, configured to calculate an average coordinate value of a projection point of each road segment in the road, and use a position point of the average coordinate value as an positioning point of the road segment, where the average coordinate value is all of the road segment The average of the coordinate values of the projection points;

a determining unit, configured to use a set of cells corresponding to all the projection points of each road segment as a cell set of the road segment positioning point, where the cell corresponding to the projection point refers to a base station that is closest to the projection point and covers the The cell of the projection point.

In conjunction with a possible implementation of the second aspect, in the two possible implementations, the first computing unit is further configured to calculate a pre-designated base station to the road in the shortest line of the road. a coordinate value of the location point, and a location point on the road in the shortest route from the base station that meets the preset condition to the road that is selected from the pre-designated base station as a projection point of the road; The precondition is that the shortest distance from the base station to the road is greater than or equal to the maximum radiation radius of the base station.

In combination with the two possible implementations of the second aspect or the two possible implementations of the second aspect, in the three possible implementation manners, the device further includes:

a second selecting unit, configured to select a positioning communication device of each positioning point of the road in a preset period, where the positioning communication device refers to a communication device with the highest aggregation degree of the cell set of the positioning point and the active set cell ;

An update unit, configured to select a target active set cell of the positioning point from an active set cell of the positioning communication device of each positioning point, and update the target active set cell to a cell set of the positioning point, where the target is activated The set cell refers to the active set cell with the highest probability of occurrence among all active set cells of the positioning communication device of the anchor point.

In combination with the two possible implementations of the second aspect or the second aspect, or the two possible implementations of the second aspect, in the four possible implementation manners, the obtaining unit is further configured to obtain An active set cell at a plurality of time points of each of the target communication devices;

The first selection unit is further configured to select, from the positioning points of the road, a target positioning point of each of the target communication devices at each of the time points, and use the target positioning point as the target at the time point. The location of the communication device in the road;

The monitoring unit is further configured to calculate a target road segment moving speed of the at least one target communication device in the road, and use the moving speed as a speed of the vehicle traveling in the target road segment, where the target road segment is two a segment between the target location points; and/or, based on a location of the at least one target communication device in the road, calculating a number of vehicles in each of the road segments.

In combination with the four possible implementations of the second aspect, in the five possible implementation manners, the monitoring unit is further configured to select a target positioning point from the at least one target communication device as the location in the road a first communication device of consecutive positioning points, and calculating a target road segment moving speed of the first communication device in the road, and using the moving speed as a speed of the vehicle traveling in the target road segment.

In the above technical solution, acquiring an active set cell of at least one target communication device, where the target communication device is a communication device located in the vehicle; selecting a target positioning point of each target communication device from the location points of the road, and Determining, by the target location point, a location where the target communication device is located in the road; a location set of the target location point and an activation set cell of the target communication device having the highest degree of convergence; according to the at least one The target communication device monitors the traffic of the road at a location in the road. Communication equipment and residential areas are both existing, so that no additional cost is required, and communication equipment is present in each vehicle, so that each vehicle can be monitored, thereby realizing intelligent transportation with low cost and high accuracy. Traffic monitoring. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings of the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flowchart of a method for monitoring road traffic according to an embodiment of the present invention; 2 is a schematic flowchart of a method for monitoring road traffic according to an embodiment of the present invention; FIG. 3 is a schematic diagram of an optional cell projection point according to an embodiment of the present invention;

4 is a schematic structural diagram of a device for monitoring road traffic according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of another device for monitoring road traffic according to an embodiment of the present invention; FIG. A schematic diagram of the structure of a road traffic monitoring device. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a method for monitoring road traffic according to an embodiment of the present invention. As shown in FIG. 1 , the method includes:

101. Acquire an activation set cell of at least one target communication device, where the target communication device is a communication device located in a vehicle;

102. Select, from a positioning point of the road, a target positioning point of each of the target communication devices, and use the target positioning point as a location of the target communication device in the road; wherein, the target positioning An address point of the cell set of the point and the active set cell of the target communication device having the highest degree of coincidence;

103 monitors traffic of the road based on the location of the at least one target communication device in the road.

Optionally, the foregoing target communication device may be a mobile communication device, such as: a mobile phone, a tablet computer, a notebook, or the like. It can also be a communication device that is fixed to the vehicle.

Alternatively, the road may be one or more roads.

Optionally, monitoring traffic of the road may include:

Monitor the number and status of vehicles on the road (eg speed of travel, etc.).

Optionally, the embodiments of the present invention can be applied to any device for monitoring road traffic.

In the above technical solution, acquiring an active set cell of at least one target communication device, where the target communication device is a communication device located in the vehicle; selecting a target positioning point of each target communication device from the location points of the road, and Using the target positioning point as the target communication device in the road a location of the target location point is a location point where the set of cells of the location point and the active set of the target communication device have the highest degree of coincidence; and the location of the at least one target communication device in the road is monitored The flow of the road. Communication equipment and residential areas are both existing, so that no additional cost is required, and communication equipment is present in each vehicle, so that each vehicle can be monitored, thereby realizing intelligent transportation with low cost and high accuracy. Traffic monitoring. 2 is a schematic flowchart of another method for monitoring road traffic according to an embodiment of the present invention. As shown in FIG. 2, the method includes:

201. Calculate a coordinate value of a projection point on the road, where the projection point refers to a position point on the road in a shortest route of the base station to the road specified in advance.

Optionally, the foregoing predetermined base station may be any base station in the communication system, and the number of the base stations is not limited. The shortest line described above may be a straight line from the base station to the road, and the straight line is perpendicular to the road.

Alternatively the position of the base station is set, the position of the road i _{_{<road i, (x 2,}} y 2), (x 3, y 3), /?>? I is the linear equation can be expressed as the road

, set the shortest distance from the base station to the road

The coordinates of the projection point are ( ^x 4, y ₄ ), then satisfy: y ₄ _ y ₂ = ^y3 _ ^y2 (χ ₄ _ )

^Χ 3 _

y ₄ - Υι y ₃ - y _{2 = 1}

X4 X X3

According to the above formula, the coordinate value of the projection point of the base station on the road can be obtained.

As an optional implementation manner, step 201 may include:

The precondition is that the shortest distance from the base station to the road is greater than or equal to the base station. Maximum radiation radius.

Optionally, as shown in FIG. 3, the road includes R1, R2, R3, R4, and R5, and the base station includes, B, C, D, E, F, and G, and the base station A is taken as an example, so that the road can be calculated. The projection points of the base station A in the above road are respectively A ₂ , A ₃ , A ₄ , A ₅ , and the distances from the base station A to each projection point are ^{δ δ δ} , , ( , y ₂ ), , y ₃ ), respectively. (x ₄ , y ₄ ), respectively, the coordinates of the projection point of the base station A on each road. If ^>r , r is the maximum radiation radius of the base station A, the projection point is removed, and the projection point of the base station A on the above road can be output:

< cel _l , roadi , (x _1? y _x ) >< cel^ ₄ , road ₄ , (x ₄ , y ₄ ) >< cell ₂₂ , road ₂ ,(3⁄4, y ₂ ) >

< cell ₃ 3 , road ₃ , (x ₃ , y ₃ ) > where the base station A includes the cell 1, the cell 2, and the cell 3. The above-mentioned ∞11 ₁ indicates the cell range of the cell 1 included in the base station A on the road R1, and the above cell ₁₄ denotes the cell coverage of the cell 1 included in the base station A on the road R4.

202. Calculate an average coordinate value of a projection point of each road segment in the road, and use a position point of the average coordinate value as an anchor point of the road segment, where the average coordinate value is a coordinate value of all projection points of the road segment. average value.

Optionally, for each road, the set target target precision is P, and the target point of the road is used as the starting point to be set to the precision P step, that is, the step length is understood as the above road segment, and the statistics are from the start point to the start point. The set of projection points within the step size (ie, within the above-mentioned road segment), that is, the set of projection points in the statistics (^'^ + Ρ), set the set to ¹ 1 , where the coordinates of each projection point are, ^y . Determining the setpoint for the section of the center of all the projected points of the center segment ¹ is disposed ^ D ^ coordinates), i.e., the coordinate values of the segment setpoint is satisfied:

Where ⁿ is the number of elements in the set, that is, the number of projection points of the road segment.

203. Set a cell corresponding to all the projection points of each road segment as a d and a region set of the road segment positioning point, where the cell corresponding to the projection point is included in a base station that is closest to the projection point and covers the The cell of the shadow point.

Optionally, obtaining a cell corresponding to the projection point can be obtained by:

Calculating the azimuth of the connection between the base station and the projection point, which is assumed to be the cell ^eeU l included in the base station, The azimuth angle of ^cell ₃ is ", + 120 , α + 240 _;

Judging the relationship between the angle ^ and ";

When " - 1 ² 0 ≤ ≤ « , it is determined that cell i is a cell corresponding to the projection point;

When "≤ ≤ « + 1 ² 0 , it is determined that cell ₂ is the cell corresponding to the projection point; when " + 120 ≤ ≤ « + 240 , it is determined that ^∞11 3 is the cell corresponding to the projection point.

Optionally, the information of the projection point may be output in a format of <cell, road, (x4, y4)>, for example, the cell corresponding to the projection point, and the road is roadi, then < ^eeU "' ^road - ^(x4) may be output. ' ^3⁄4) > „Optionally, after step 203, the method further includes:

Establish a mapping relationship between the anchor point and the cell on the road. Can be referred to the representation shown.

Table 1

That is, locate ¹ ^ with ^CeU 2, establish a mapping relationship on the road, ^ and ¹ ^ do not make a peaceful repeat description.

It should be noted that all of the foregoing steps 201 to 203 may be performed in advance, and when the road vehicle is monitored in real time, it may be directly executed from step 204.

204. Acquire an active set cell of at least one target communication device, where the target communication device is a communication device located in the vehicle.

As an optional implementation manner, step 204 may include:

The active set cell information of the at least one target communication device is extracted from the wireless network log to obtain an active set cell to the at least one target communication device.

Optionally, the foregoing active set cell refers to a set of cells that establish a connection with a target communication device station, or a set of cells that the target communication device can receive a signal.

205. Select, from a positioning point of the road, a target positioning point of each of the target communication devices, and use the target positioning point as a location of the target communication device in the road; wherein, the target positioning An address point of the cell set of the point and the active set cell of the target communication device having the highest degree of coincidence; Optionally, selecting a target location point of each of the target communication devices from the location points of the road may be selected as follows:

For a communication device, the coincidence degree of the active set cell of the target communication device and the cell set of each of the above-mentioned roads is calculated by the following formula:

Where sim is the coincidence degree of the active set cell of the target communication device and the cell set of the anchor point,

^ is the active set cell of the target communication device, which is a set of cells of a certain positioning point;

In this way, through multiple calculations, that is, the active set cell of one target communication device and the small set of multiple anchor points are calculated, the target positioning point of the target communication device can be calculated. The target location point of the at least one target communication device can be calculated by the above method.

206. Monitor traffic of the road according to a location of the at least one target communication device in the road.

Optionally, the foregoing monitoring may include:

Monitor road conditions such as the number of vehicles on the road and the speed of the vehicles on the road. As an optional implementation manner, step 204 may include:

Step 205 can include:

Step 206 can include:

Optionally, for example, the target road segment is an anchor point and a road segment between the foregoing, and the foregoing The time difference between the target positioning point and the time point of the target point in the at least one target communication device, so that the distance between the road segment and the distance between the target communication device and the time point at which the target positioning point is the anchor point and at least one target communication device The time difference is obtained to obtain the moving speed of the at least one target communication device at the target road segment.

Of course, the moving speed of each of the at least one target communication device in the target road segment may be calculated, and the time difference between each target communication device at the target point and the time point of the target point and the target point may be calculated. The distance of the road segment calculates the moving speed of each target communication device on the target road segment.

Optionally, calculating the target road segment moving speed of the at least one target communication device in the road, and using the moving speed as the speed of the vehicle traveling in the target road segment, may include: from the at least one Selecting, by the target communication device, a first communication device whose target positioning point is a continuous positioning point in the road;

The first communication device in which the target positioning point is a continuous positioning point in the road may be a first communication device in which the target positioning point at the time point is a continuous positioning point in the road, for example, two consecutive times. And the communication device ^U l is at the time point ^, ^ the target location point is ^ and , and the anchor point and ¹ ^ are the anchor points connected to the two locations in the road, so that the communication device ^U i can be determined as the first communication device. That is, the above-mentioned first communication device is a communication device included on a vehicle that has been traveling on the above road for a certain period of time (that is, when it is necessary to calculate the moving speed of the vehicle on the road).

Optionally, the number of vehicles in each road segment in the road is calculated, and the number of vehicles in each road segment can be obtained by the number of communication devices in which the positioning points included in each road segment are located.

For example, the time points, and the communication devices ^U l and ^U 2 are taken as an example for example. The target locations of the communication devices ^U l and ^U 2 at time points, , and ^ are as shown in Table 2:

Table 2:

User time activation set cell location point cell set coincidence degree anchor point

Cell, celL celL cell celL celL t ₂ celL celL cell ₄ celL celL celL cell ₄

·> 0.75

u ₂ t ₃ celL celL cell ₈ celL cell ₈

6 ·>'·> 0.67 u ₂ t ₄ celL cell ₉ celL celL cell ₉

8 ·>'·> ⁸ ·> 0.67 R ₄ u ₂ t ₅ celL celL cell ₁₀ celL celL celL cell ₁₀

8 ·> , ^{11 8} ·> 0.75 «5

As shown in Table 2 above, it is assumed that the active set cells at different times are the active set cells in the above table, and the cell sets of the anchor points are compared with the communication device ^U i , and the active set cells at different times are coincident. Degree, the cell set that selects the location point and the communication device ^U l , ^U 2 at the different time of the active set cell with the highest degree of coincidence is the target location of the target communication device at the time point, that is, the communication device is obtained. ¹ ^ The target location points are respectively ¹ ^, that is, the location of the communication device at the time point is and the target location of the communication device is , ^ and ¹ ^ respectively, ie, the communication device is at, time, The locations are ¹ ^ ^R 4 and ¹ ^

Optionally, it is assumed that the moving speed of the above-mentioned road in the time series ''ti) is ^ν ι', and the reference speed of the traffic flow of the road is ^V. , then when ^V i ^{≥ V} . At this time, the reference speed of the traffic flow of the road can be adjusted to _Vi . In addition, ^v can be dynamically adjusted according to the traffic state of the road. .

Optionally, the method may further include:

For a certain road segment, the target positioning point of the current ¹¹ "target communication devices is in the road segment, and the traffic condition of the current road segment is determined according to the moving speed V of the target communication device in the time series and the reference speed ^v at the road segment. Let the speed of one communication device in the first k time points of ¹¹ "communication devices satisfy ^v≥v . And the average speed of the target communication device on the road segment satisfies ^{v < v} . , you can determine the current traffic condition of the road section is not good. A collection of cells of a locus. That is, after the step 203, the method may further include:

Selecting a target active set cell of the positioning point from an active set cell of the positioning communication device of each positioning point, and updating the target active set cell to a cell set of the positioning point, where the target active set cell refers to the The highest probability of occurrence in all active set cells of the positioning communication device of the positioning point Live community.

Optionally, in the embodiment of the present invention, the step 201, the step 202, and the step 203 may be performed in advance, and the step of selecting the positioning communication device and updating the cell set of the positioning point in the embodiment may be performed periodically. For example, it may be executed once a day, and step 204, step 205, and step 206 may be performed in real time, or may be performed according to a certain period or a specified time point. That is, step step 204 may be performed before or after the step of selecting a location communication device and updating the set of cells of the anchor point.

Optionally, the number of positioning communication devices that select an positioning point for a certain positioning point within a preset period is 100, but in practice, the 100 communication devices are included in the active set cell when the target positioning point is the positioning point. The cells may be different. For example, the communication device ^U i and the communication device include ⁰ ^ , ^Cdl 3 and cell ^ cell ₂ , cell ₃ , cell respectively when the target location point is the anchor point. _4, and _{the 100} communication device in the target setpoint for the active set cells at the anchor points contained in the cell is ^ ^{^11,,} ^Cdl 3, ^CeU probability of 4 maximum, for example 80%, which can be ^CeU l , ^Cdl 3 , ^CeU 4 is a target activated set cell for the anchor point, and then the target active set cell is updated to the set of cells of the anchor point.

In the above technical solution, a plurality of implementation modes for realizing monitoring road traffic are added on the basis of the above embodiments, and the traffic monitoring of the intelligent traffic can be realized at low cost and high accuracy. The following is a device embodiment of the present invention. The device embodiment of the present invention is used to perform the method for implementing the first to second embodiments of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown, and the specific technical details are not disclosed. Please refer to Embodiment 1 and Embodiment 2 of the present invention. FIG. 4 is a schematic structural diagram of a device for monitoring road traffic according to an embodiment of the present invention. As shown in FIG. 4, the method includes: an obtaining unit 31, a first selecting unit 32, and a monitoring unit 33, where:

The acquiring unit 31 is configured to acquire an active set cell of the at least one target communication device, where the target communication device is a communication device located in the vehicle;

The first selection unit 32 is configured to select a target positioning point of each of the target communication devices from the positioning points of the road, and use the target positioning point as a location of the target communication device in the road; The cell set of the target location point coincides with the active set cell of the target communication device. The highest degree of positioning;

The monitoring unit 33 is configured to monitor traffic of the road according to a location of the at least one target communication device in the road.

Alternatively, the road may be one or more roads.

Optionally, monitoring traffic of the road may include:

In the above technical solution, acquiring an active set cell of at least one target communication device, where the target communication device is a communication device located in the vehicle; selecting a target positioning point of each target communication device from the location points of the road, and Determining, by the target location point, a location where the target communication device is located in the road; the target location point is an location point where a cell set of the location point and a target set of the target communication device have the highest coincidence degree; The at least one target communication device monitors the traffic of the road at a location in the road. Communication equipment and residential areas are both existing, so that no additional cost is required, and communication equipment is present in each vehicle, so that each vehicle can be monitored, thereby realizing intelligent transportation with low cost and high accuracy. Traffic monitoring. FIG. 5 is a schematic structural diagram of another apparatus for monitoring road traffic according to an embodiment of the present invention. As shown in FIG. 5, the method includes: a first calculation unit 41, a second calculation unit 42, a determination unit 43, an acquisition unit 44, and a first unit. The selecting unit 45 and the monitoring unit 46, wherein:

The first calculation unit 41 is configured to calculate a coordinate value of a projection point on the road, and the projection point refers to a position point on the road in the shortest route of the base station to the road specified in advance.

Optionally, the foregoing predetermined base station may be any base station in the communication system, and the number of the base stations is not limited.

Optionally, the first calculation unit 41 is further configured to calculate a coordinate value of a pre-designated base station to a location point on the road in the shortest route of the road, and select a pre-predetermined from the pre-designated base stations. a position point on the road in the shortest route of the conditional base station to the road as a projection point of the road; The pre-condition is that the shortest distance from the base station to the road is greater than or equal to the maximum radiation radius of the base station.

The second calculating unit 42 is configured to calculate an average coordinate value of a projection point of each road segment in the road, and use a position point of the average coordinate value as an positioning point of the road segment, where the average coordinate value is the road segment The average of the coordinate values of all the shadow points.

a determining unit 43 is configured to use a set of cells corresponding to all the projection points of each road segment as a cell set of the road segment positioning point, where the cell corresponding to the projection point is included and covered by a base station that is closest to the projection point The cell of the shadow point.

The obtaining unit 44 is configured to acquire an active set cell of the at least one target communication device, where the target communication device is a communication device located in the vehicle.

As an optional implementation manner, the obtaining unit 44 is further configured to extract, from the wireless network log, the active set cell information of the at least one target communication device to obtain an active set cell to the at least one target communication device.

a selection unit 45, configured to select a target positioning point of each of the target communication devices from the positioning points of the road, and use the target positioning point as a location of the target communication device in the road; The cell set of the target locating point has the highest locating point with the active set cell of the target communication device.

The monitoring unit 46 is configured to monitor traffic of the road according to a location of the at least one target communication device in the road.

Optionally, the foregoing monitoring may include:

Monitor road conditions such as the number of vehicles on the road and the speed of the vehicles on the road. As an optional implementation manner, the obtaining unit 44 may be further configured to acquire an active set cell of multiple time points of each of the target communication devices;

The first selection unit 45 is further configured to select, from the positioning points of the road, a target positioning point of each of the target communication devices at each of the time points, and use the target positioning point as the target at the time point. The location of the communication device in the road;

The monitoring unit 46 is further configured to calculate a target road segment moving speed of the at least one target communication device in the road, and use the moving speed as a speed of the vehicle traveling in the target road segment, where the target road segment is two a section between the target anchor points; and/or, according to the at least The number of vehicles in each of the road segments is calculated at a location where the target communication device is located in the road.

Optionally, the monitoring unit 46 is further configured to: select, from the at least one target communication device, a first communication device whose target positioning point is a continuous positioning point in the road; and calculate the first communication device The target road segment moves speed in the road, and the moving speed is taken as the speed at which the vehicle travels in the target road segment.

As an optional implementation manner, the device may further include:

a second selection unit (not shown in the drawing) for selecting a positioning communication device for each positioning point of the road in a preset period, where the positioning communication device refers to a cell collection and activation of the positioning point The communication device with the highest cell coincidence degree;

An update unit (not shown in the drawing), configured to select a target active set cell of the positioning point from an active set cell of the positioning communication device of each positioning point, and update the target active set cell to the positioning point The set of cells, the target active set cell refers to the active set cell with the highest probability of occurrence in all active set cells of the positioning communication device of the positioning point.

In the above technical solution, a plurality of implementation modes for realizing monitoring road traffic are added on the basis of the above embodiments, and the traffic monitoring of the intelligent traffic can be realized at low cost and high accuracy. FIG. 6 is a schematic structural diagram of another apparatus for monitoring a road traffic according to an embodiment of the present invention. As shown in FIG. 6, the method includes: a memory 51, and a processor 52 connected to the storage, where the memory 51 is configured to store a set of program codes. The program used by the processor 52 to call the memory 51 performs the following operations: acquiring an active set cell of at least one target communication device, the target communication device being a communication device located in the vehicle;

The traffic of the road is monitored based on the location of the at least one target communication device in the road.

Optionally, the communication device may be a mobile communication device, such as a mobile phone, a tablet computer, a notebook, or the like. It can also be a communication device that is fixed to the vehicle. Alternatively, the road may be one or more roads.

Optionally, monitoring traffic of the road may include:

In another optional embodiment, the processor 52 is further configured to: perform a coordinate value of a projection point on the road, where the projection point refers to a pre-designated base station to a shortest line of the road a location point on the road;

The set of cells corresponding to all the projection points of each road segment is used as the cell set of the road segment positioning point, and the cell corresponding to the projection point refers to the cell included in the base station that is closest to the projection point and covers only the projection point. ;

Acquiring at least one active set cell of the target communication device, the target communication device being a communication device located within the vehicle;

As an optional implementation manner, the operation performed by the processor 52 to calculate coordinate values of the projection points on the road may include:

As an optional implementation, the operation performed by the processor 52 to acquire the active set cell of the at least one target communication device may include: Extracting active set cell information of at least one target communication device from the wireless network log to obtain an active set cell to the at least one target communication device.

As an optional implementation manner, the operation performed by the processor 52 to acquire the active set cell of the at least one target communication device may include:

The operation of selecting, by the processor 52, the target positioning point of each of the target communication devices from the positioning points of the road, and using the target positioning point as the location of the target communication device in the road may include :

The operation performed by the processor 52 to monitor the traffic of the road according to the location of the at least one target communication device in the road may include:

Optionally, the calculating, by the processor 52, the target segment movement speed of the at least one communication in the road, and using the moving speed as the speed of the vehicle traveling in the target road segment, may include:

As an optional implementation, after the processor 52 performs the operation of using the set of cells corresponding to all the projection points of each road segment as the cell set of the link location point, the processor 52 may also be used to perform the following operations:

Selecting a positioning communication device for each positioning point of the road within a preset period, the positioning communication The signaling device refers to a communication device with the highest aggregation of the cell set of the positioning point and the active set cell; selecting a target active set cell of the positioning point from the active set cell of the positioning communication device of each positioning point, and the target The active set cell is updated to the cell set of the locating point, where the target active set cell refers to the active set cell with the highest probability of occurrence among all active set cells of the locating communication device of the locating point.

In the above technical solution, acquiring an active set cell of at least one target communication device, where the target communication device is a communication device located in the vehicle; selecting a target positioning point of each target communication device from the location points of the road, and Determining, by the target location point, a location where the target communication device is located in the road; the target location point is an location point where a cell set of the location point and a target set of the target communication device have the highest coincidence degree; The at least one target communication device monitors the traffic of the road at a location in the road. Communication equipment and residential areas are both existing, so that no additional cost is required, and communication equipment is present in each vehicle, so that each vehicle can be monitored, thereby realizing intelligent transportation with low cost and high accuracy. Traffic monitoring.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. The program, when executed, may include the flow of an embodiment of the methods as described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

A method for monitoring road traffic, characterized in that it comprises:

Selecting, from a positioning point of the road, a target positioning point of each of the target communication devices, and using the target positioning point as a location of the target communication device in the road; wherein, the target positioning point The cell set has the highest coincidence degree with the active set cell of the target communication device;

2. The method according to claim 1, wherein the target location point of each of the target communication devices is selected from the location points of the road, and the target location point is used as the target communication device. Before the location of the road, the method further includes:

The set of cells corresponding to all the projection points of each road segment is used as the cell set of the road segment positioning point, and the cell corresponding to the projection point refers to the cell included in the base station that is closest to the projection point and covers the projection point. .

3. The method according to claim 2, wherein the calculating the coordinate values of the projection points on the road comprises:

4. The method of claim 2 or 3, wherein said all of each road segment After the set of cells corresponding to the projection point is used as the cell set of the link location point, the method further includes:

Selecting a target active set cell of the positioning point from the active set cell of the positioning communication device of each positioning point, and updating the target active set cell to a cell set of the positioning point, where the target active set cell refers to the The active set cell with the highest probability occurs in all active set cells of the positioning communication device of the positioning point.

The method according to any one of claims 1-3, wherein the acquiring the active set cell of the at least one target communication device comprises:

Calculating a target road segment moving speed of the at least one target communication device in the road, and describing a road segment between the target positioning points; and/or

6. The method according to claim 5, wherein: calculating a target road segment moving speed of the at least one communication in the road, and using the moving speed as a vehicle traveling in the target road segment Speed, including:

Calculating a target road segment moving speed of the first communication device in the road, and moving the The moving speed is used as the speed at which the vehicle travels in the target road segment.

A device for monitoring road traffic, comprising: an acquiring unit, a first selecting unit, and a monitoring unit, wherein:

The first selecting unit is configured to select a target positioning point of each target communication device from the positioning points of the road, and use the target positioning point as a location of the target communication device in the road Wherein, the cell set of the target locating point and the locating point of the active set cell of the target communication device have the highest degree of coincidence;

The device of claim 7, wherein the device further comprises:

a second calculating unit, configured to calculate an average coordinate value of a projection point of each road segment in the road, and use a position point of the average coordinate value as an anchor point of the road segment, where the average coordinate value is all of the road segment The average of the coordinate values of the projection points;

The device according to claim 8, wherein the first calculating unit is further configured to calculate a coordinate value of a pre-designated base station to a position point on the road in a shortest route of the road, and Selecting, from the pre-designated base station, a location point on the road in the shortest route of the base station that meets the preset condition as a projection point of the road;

The device according to claim 8 or 9, wherein the device further comprises: a second selecting unit, configured to select a positioning communication device of each positioning point of the road in a preset period, The positioning communication device refers to that the cell set of the positioning point has the highest coincidence degree with the active set cell. Communication equipment;

The device according to any one of claims 7 to 9, wherein the acquiring unit is further configured to acquire an active set cell of each time point of each of the target communication devices;

The first selecting unit is further configured to select, from the positioning points of the road, a target positioning point of each of the target communication devices at each of the time points, and use the target positioning point as the target at the time point The location of the communication device in the road;

The monitoring unit is further configured to calculate, by the at least one target communication device, the target road segment in the road is a road segment between two target positioning points; and/or, according to the at least one target communication The number of vehicles in each section of the road is calculated at the location of the equipment in the road.

The device according to claim 11, wherein the monitoring unit is further configured to: select, from the at least one target communication device, a first communication that is a target location point that is a continuous location point in the road. a device, and calculating a target road segment moving speed of the first communication device in the road,