CN114898575A - Electronic equipment and road section queuing length determining method - Google Patents

Electronic equipment and road section queuing length determining method Download PDF

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CN114898575A
CN114898575A CN202210458603.0A CN202210458603A CN114898575A CN 114898575 A CN114898575 A CN 114898575A CN 202210458603 A CN202210458603 A CN 202210458603A CN 114898575 A CN114898575 A CN 114898575A
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road section
signal period
vehicle
lane
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CN114898575B (en
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李连杰
赵晓伟
魏立夏
唐瑞琨
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Hisense TransTech Co Ltd
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G08G1/012—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from other sources than vehicle or roadside beacons, e.g. mobile networks
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0125—Traffic data processing

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Abstract

The invention provides an electronic device and a method for determining a road section queuing length, which relate to the technical field of intelligent traffic, and comprise the following steps: for each target signal period, if the congestion state of a sub-road section closest to the stop line in the target road section in the target signal period is higher and the target road section drives through a vehicle, determining the first queuing length of the target road section in the target signal period according to the acquired information and determining the final queuing length according to the second queuing length determined by a preset network platform; and if the situation that the target road section drives the vehicle is not determined, taking the second queuing length as the queuing length of the target road section in the target signal period. According to the embodiment of the invention, the queuing length can be determined no matter whether vehicles pass through the road section or not when the road section is congested, so that the condition that the queuing length cannot be determined after no vehicles pass through the road section is avoided.

Description

Electronic equipment and road section queuing length determining method
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to an electronic device and a method for determining a road section queuing length.
Background
In recent years, along with the annual increase of the quantity of motor vehicles, traffic jam becomes one of main traffic symptoms of each city, representative traffic indexes are selected, and scientific and objective evaluation of traffic jam conditions is beneficial to better understanding of the jam degree of the city. The queuing length is used as one of main evaluation indexes of the signalized intersection, the road congestion degree can be judged according to the queuing length of each direction of the intersection, and the intersection unbalance condition can be judged according to the queuing length of each direction of the intersection.
At present, the vehicle track is mostly determined based on electronic police, detectors, Global Positioning System (GPS) and other devices, and then the road section queuing length is determined. When the queue length is estimated or calculated by a single data source, the queue length cannot be calculated once the data source is missing.
Disclosure of Invention
The invention provides an electronic device and a method for determining a road section queuing length, which can determine the queuing length no matter whether vehicles pass through the road section or not when the road section is congested, and avoid the condition that the queuing length cannot be determined after no vehicles pass through the road section.
In a first aspect, an embodiment of the present invention provides an electronic device, including: a communication unit and a processor;
the communication unit is used for receiving acquisition information sent by acquisition equipment in a target road section and receiving the queuing length of each lane determined by the preset network platform;
the processor is used for determining a target road section of which the queuing length needs to be determined and a preset time period;
for each target signal period, if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and a vehicle is determined to pass through the target road section according to acquisition information sent by acquisition equipment in the target road section, determining the queuing length of the target road section in the target signal period according to a first queuing length of the target road section in the target signal period determined by the acquisition information and a second queuing length of the target road section in the target signal period determined according to road section information detected by a preset network platform; wherein the target signal cycle is a signal cycle within the preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period;
and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal period.
When the electronic equipment determines that the target road section is jammed, and after the acquisition equipment acquires that the vehicle passes through the target road section, determining the initial queuing length according to the acquisition information sent by the acquisition equipment in the target road section, then, the queuing length determined by the preset network platform is fused with the initial queuing length to obtain the final queuing length, when the target road section is congested, but no vehicle is found in the target road section through the acquisition equipment, the queuing length determined by the preset network platform is directly used as the final queuing length, so that the queuing length can be determined no matter whether the acquisition equipment acquires the passing vehicle or not, the condition that the queuing length cannot be determined after no vehicle passes through the road section is avoided, and meanwhile, after the queuing length can be determined by both the two methods, the final queuing length is calculated by adopting the queuing lengths in two aspects, and the calculation accuracy is improved.
In one possible implementation, the processor is specifically configured to:
for each lane of a target road segment, determining at least one target vehicle driving through the lane within the target signal period; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times; wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stopping times are the times of signal cycles of the vehicle stopping at the downstream intersection of the target road section; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
determining a corresponding stopping signal period of the passing vehicle according to the corresponding stopping times of the passing vehicle; the stop signal period corresponding to the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
taking the passing vehicle with the stay signal period as the target signal period and the vehicle staying in the target signal period determined according to other signal periods as the target vehicle corresponding to the target signal period; wherein the other signal period is a signal period except for the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
The electronic equipment can determine the stop times corresponding to the vehicles through the corresponding relation between the time range and the stop times, then determine the stop signal period corresponding to the vehicles according to the stop times of the vehicles, determine the vehicles stopping in the target signal period according to the stop signal period corresponding to each vehicle and other signal periods, and determine the target vehicles corresponding to the target signal period.
In one possible implementation, the processor is specifically configured to:
determining vehicles driving out of a downstream intersection of the lane in the preset time period;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive out of the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
The electronic equipment inquires that the vehicle also passes through the upstream intersection of the target road section through the vehicle at the downstream intersection, and then determines that the vehicle is the target vehicle of the lane, so that the condition that the determined target vehicle is wrong is avoided.
In one possible implementation, the processor is specifically configured to:
for each lane of the target road section, if the lane type of the lane is a non-channelized broadening type, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
According to the electronic equipment, the queuing length of the lane is determined through the lane type and the sum of the lengths of all target vehicles corresponding to each target signal period, so that the lane type is distinguished, the queuing length is calculated respectively, and the determination accuracy can be improved.
In one possible implementation, the processor is further configured to:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed a preset congestion state in the target signal period, and the target road section is determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
The electronic equipment can determine the queuing length through the acquisition equipment in the target road section after determining that the target road section is not blocked and the vehicle is acquired through the acquisition equipment in the target road section, so that the queuing length can still be determined when the target road section is not blocked.
In a second aspect, an embodiment of the present invention provides a method for determining a road segment queuing length, including:
determining a target road section of which the queuing length needs to be determined and a preset time period;
for each target signal period, if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and a vehicle is determined to pass through the target road section according to acquisition information sent by acquisition equipment in the target road section, determining the queuing length of the target road section in the target signal period according to a first queuing length of the target road section in the target signal period determined by the acquisition information and a second queuing length of the target road section in the target signal period determined according to road section information detected by a preset network platform; wherein the target signal cycle is a signal cycle within the preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period;
and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal period.
In one possible implementation, the first queue length is determined by:
for each lane of a target road segment, determining at least one target vehicle driving through the lane within the target signal period; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times; wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stopping times are the times of signal cycles of the vehicle stopping at the downstream intersection of the target road section;
determining a corresponding stopping signal period of the passing vehicle according to the corresponding stopping times of the passing vehicle; the stop signal period corresponding to the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
taking the passing vehicle with the stay signal period as the target signal period and the vehicle staying in the target signal period determined according to other signal periods as the target vehicle corresponding to the target signal period; wherein the other signal period is a signal period except for the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
In one possible embodiment, determining at least one target vehicle traveling through the lane during the target signal period includes:
determining a vehicle to exit a downstream intersection of the lane within the target signal period;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive out of the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
In one possible implementation, determining the queuing length of each lane in the target signal cycle according to the length of the target vehicle corresponding to the target signal cycle in each lane and the lane type of each lane includes:
for each lane of the target road section, if the lane type of the lane is a non-channelized broadening type, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
In one possible implementation, the method further comprises:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed a preset congestion state in the target signal period and the target road section is determined to drive vehicles according to acquisition information sent by acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
In a third aspect, an embodiment of the present invention provides a storage medium, where instructions executed by a processor of an electronic device enable the electronic device to execute the road segment queue length determination method according to any one of the second aspect.
In addition, for technical effects brought by any one implementation manner of the second aspect to the third aspect, reference may be made to technical effects brought by different implementation manners of the first aspect, and details are not described here.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Fig. 1 is an interaction diagram of an electronic eye and an electronic device according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining a road section queuing length according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating user interaction with an electronic device according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for determining a queuing length based on a correspondence between a time range and a number of dwells according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a target road segment with queuing in a channelized road according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a road section queuing length determining apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As vehicles are more and more on the road, in order to provide a high-quality route for a driver, the driver is prompted about the traffic jam condition, and the queuing length can reflect the congestion degree of a road section to a certain extent.
At present, electronic eyes are arranged at a signal lamp and used for detecting violation when a vehicle passes through the signal lamp, the invention utilizes information shot by the electronic eyes, and combines the information shown in fig. 1 to connect the electronic eyes 1-n with the electronic equipment 100, the electronic equipment 100 acquires information collected by the electronic eyes 1-n, the information collected by the electronic eyes 1-n comprises pictures of the vehicle passing through a crossing corresponding to the electronic eyes, so that a license plate of the vehicle can be identified through the pictures of the vehicle, and the electronic equipment 100 determines the vehicle passing through the crossing corresponding to the electronic eyes.
Taking an intersection a corresponding to the electronic eye 1, an intersection B corresponding to the electronic eye 2, and a target road segment AB as an example, when the queuing length of the target road segment AB is determined, when the target road segment AB is determined to be congested, the electronic device 100 requests images shot by the electronic eye 1 and the electronic eye 2, after receiving the request, the electronic eye 1 and the electronic eye 2 send the images shot by themselves to the electronic device 100, the electronic device 100 determines that a vehicle passes through the target road segment AB according to the images shot by the electronic eye 1 and the electronic eye 2, then determines a queuing length according to the images shot by the electronic eye 1 and the electronic eye 2, and then the electronic device 100 fuses another queuing length determined by a preset network platform and the queuing length to obtain a final queuing length, of course, if the electronic device 100 determines that no vehicle passes through the target road segment AB according to the images shot by the electronic eye 1 and the electronic eye 2, then another queue length is taken directly as the last queue length.
Based on the above, the invention provides a road section queuing length determination method applied to an electronic device.
The following detailed description is made with reference to the accompanying drawings:
referring to fig. 2, an embodiment of the present invention provides a method for determining a road segment queuing length, including:
s200: determining a target road section of which the queuing length needs to be determined and a preset time period;
specifically, the road segment selected by the user selection instruction may be used as the target road segment and the time period selected by the user selection instruction may be used as the preset time period in response to the user selection instruction.
Referring to fig. 3, an operation page of the electronic device is provided, where a user inputs a preset time period, for example, 11:00 to 11:10 in the operation page, and selects a target road segment from intersection a to intersection B, that is, the target road segment is road segment AB, and then the electronic device obtains data of an electronic eye of the target road segment in the preset time period selected by the user, determines a queuing length of the target road segment selected by the user through the data, and displays the queuing length of the target road segment, which is, the road segment AB: 300 meters.
S201: for each target signal period, if the congestion state of a sub-road section closest to a stop line of a downstream intersection in a target road section exceeds a preset congestion state in the target signal period and a vehicle is determined to pass through the target road section according to acquisition information sent by acquisition equipment in the target road section, determining the queuing length of the target road section in the target signal period according to a first queuing length of the target road section in the target signal period determined by the acquisition information and a second queuing length of the target road section in the target signal period determined according to road section information detected by a preset network platform; the target signal cycle is a signal cycle in a preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section from a red light to the next red light;
as shown in fig. 1, the target section includes two intersections, the intersection through which the vehicle first passes is an upstream intersection, and the intersection through which the vehicle passes later is a downstream intersection. Taking the target road section AB as an example, the intersection a is an upstream intersection, and the intersection B is a downstream intersection.
The congestion state of the sub-road section closest to the stop line of the downstream intersection in the target road section is provided through a preset network platform. For example, the congestion state of at least one sub-road section in the target road section and the queuing length determined by the preset network platform are obtained from the preset network platform; the preset network platform may be a network platform for providing a map.
The acquisition device in the target road segment may include an electronic eye at an upstream intersection and an electronic eye at a downstream intersection in the target road segment.
And determining the queuing length of the target road section in the target signal period according to the first queuing length and the second queuing length, specifically:
if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state, taking a first preset numerical value as a weight corresponding to a second queuing length, and taking the second preset numerical value as a weight corresponding to the first queuing length; taking the sum of the first product and the second product as the new queuing length of the target road section; the first product is the product between the second queue length and a first preset value, and the second product is the product between the first queue length and a second preset value, wherein the first preset value is larger than the second preset value.
Specifically, the relationship between the first queue length, the second queue length, and the last determined queue length is:
L road section ＝αL link +(1-α)L e
In the formula:
L road section -new queuing length for the target road section;
alpha-the weight corresponding to the second queue length;
1- α -the weight corresponding to the length of the first queue.
L e -a first queue length;
L link -a second queue length.
Specifically, the road segment information detected by the preset network platform includes: link status for all sub-segments of the target segment, and link length. The Link states include 4 types, namely 1 (clear), 2 (slow travel), 3 (congestion) and 4 (severe congestion).
Link release: the link can be understood as a sub-road section under the road section between the intersections, the state of 2 indicates that the link traffic state is slow running, namely the display color of the internet map is yellow.
If the congestion state of a sub-link closest to the stop line of the downstream intersection in the target link, namely the first link before the stop line of the intersection, is 2 or more, alpha is 0.85;
the second queue length is obtained in the following way: l is link The calculation formula is as follows: l is link ＝0.8∑l link＝2 +∑l link＝3 +∑l link＝4 In the formula:
∑l link＝2 -sum of all link lengths for congestion status 2;
∑l link＝3 -all link lengths with congestion status of 3 are summed;
∑l link＝4 -sum of all link lengths for congestion status 4.
S202: if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to the acquisition information sent by the acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period;
for example, when a traffic jam starts, if the congestion state of a sub-link closest to a stop line of a downstream intersection in a target link exceeds a preset congestion state but a collection device does not collect a vehicle, a queuing length cannot be determined by the collection device such as an electronic eye, and a second queuing length is directly used as the queuing length of the target link in the target signal period.
S203: and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal cycle.
As shown in connection with fig. 4, the first queue length is determined by:
s400: for each lane of a target road segment, determining at least one target vehicle driving through the lane within the target signal period; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
specifically, in the target signal period, a vehicle which is driven out of a downstream intersection of the lane is determined;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive through the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
Taking the road section AB as an example, traversing the downstream intersection B, determining the vehicle-passing record of the lane in a preset time period, and matching the vehicle-passing records of the vehicles coming from each entrance lane of the upstream intersection A, wherein the matching search time range of the upstream intersection is as follows:
Figure BDA0003619645590000091
wherein t is the passing time of the downstream intersection B, L is the distance between the road sections AB, and v is the vehicle speed corresponding to the road sections AB, wherein the specific numerical value of v is determined according to the road section type of each road section AB, for example, the road section type is a main road, and the corresponding vehicle speed is 60 km/h; the type of the road section is a secondary trunk road, and the corresponding speed is 45 km/h; the type of the road section is a branch road, and the corresponding speed is 35 km/h. The preset traffic jam time is 30 minutes, and of course, the preset traffic jam time may be determined according to the historical traffic jam condition of the target road segment, for example, if the longest time of the historical traffic jam of the road segment is 20 minutes, the preset traffic jam time is 20 minutes; the average time length of the historical traffic congestion of the road section is 25 minutes, and then the preset traffic congestion time length is 25 minutes.
And for the license plates of the same downstream intersection matched with a plurality of license plates of the upstream intersection in the search time range, selecting the vehicle with the latest passing time as the matched vehicle, and storing the passing time of the successfully matched vehicles at the upstream and downstream intersections.
S401: determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times;
wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stay times are the times of signal cycles of the vehicle staying at the downstream intersection of the target road section;
wherein, the travel time of the target vehicle on the target road section is the time difference between the passing time of the downstream crossing and the passing time of the upstream crossing:
t lane ＝t Downstream i -t Upstream i
In the formula:
t lane -time of travel of the ith vehicle on the target road segment;
t downstream i -passing time of ith vehicle at downstream junction;
t upstream i -passing time of ith vehicle at upstream junction.
The target road section may have parking on the road section or errors of the determined target vehicle, and accordingly abnormal data are eliminated by using a box diagram principle. That is, the travel time of all the target vehicles is ranked from small to large, and the travel time values of 25% quantiles and 75% quantiles are ranked.
Specifically, the fractional difference of the statistical travel time is first determined.
IQR＝Q 3 -Q 1
In the formula:
IQR — fractional travel time;
Q 3 -75% quantile in all journey times;
Q 1 -25% quantile in all journey times.
The upper and lower bounds of the travel time are determined.
UpLimit＝Q 3 +IQR*1.5
LowLimit＝Q 1 -IQR*1.5
In the formula:
UpLimit-the upper limit of all travel times;
LowLimit-lower limit for all travel times;
IQR、Q 3 、Q 1 the meaning is the same as above.
And eliminating abnormal data. And (4) eliminating the numerical values outside the range of the upper and lower boundaries [ LowLimit, UpLimit ], and reserving the data with the travel time within [ LowLimit, UpLimit ].
And then determining the target vehicle corresponding to each target signal period according to the travel time after the elimination. For example, before the rejection is not performed, the vehicle a and the vehicle b are target vehicles, and since the travel time of the vehicle a and the vehicle b is out of the range of the upper and lower boundaries [ LowLimit, upperlimit ], the target vehicle corresponding to each target signal cycle is determined, and the vehicle a and the vehicle b are not included.
For the correspondence, the upper limit of the travel time for 0 stops is first determined:
Figure BDA0003619645590000101
in the formula:
t stop＝0 -upper limit of travel time for 0 stops;
l-length of the target road section;
v-the speed of travel of the vehicle, which can be adjusted appropriately for different road segment types, such as: the running speed of the urban main road vehicle is relatively high, and the speed can be adjusted to 60 km/h; the running speed of the secondary trunk line is relatively moderate, and the speed can be adjusted to 45 km/h; the speed of the branch is relatively slow and can be adjusted to 35 km/h.
g Green lamp -length of green light in downstream crossing in target road section. Since the initial queuing length, g, of each lane needs to be found Green lamp And the duration of the green light corresponding to the currently obtained lane is obtained.
Secondly, determining a multiple parking time range: the number of stops is divided by taking the signal period C as a boundary, namely, the travel time is increased by the duration of one signal period every time the stop is increased.
The duration of the signal period C may be a time required for a signal lamp of a downstream intersection in a specific target road segment to go from a red light to the next red light.
The time range is (0, t) stop＝0 ) The corresponding number of stops is 0 and the time range is [ t ] stop＝0 ，t stop＝0 + C), corresponding number of stops of 1, time range [ t [ stop＝0 +C，t stop＝0 +2 × C), corresponding to a number of stops of 2, up to a time range [ t stop＝0 +(n-1)C，t stop＝0 + n × C), corresponding to n parking times.
For n, it may be determined according to the historical number of stops, for example, according to the historical maximum number of stops.
Or from the longest time of flight within the target signal period. Specifically, the method comprises the following steps:
Figure BDA0003619645590000111
in the formula:
n stop-max -maximum number of stops, rounded up when the result is a decimal;
t lane-max -the longest travel time of all target vehicles corresponding to the target signal period of the lane;
t stop＝0 -upper limit of travel time for 0 stops;
C-Signal period.
According to the above-mentioned t stop＝0 And n stop-max And determining the corresponding relation between the time range and the parking times, and then determining the stopping times corresponding to the time range to which the travel time of the passing vehicle on the target road section belongs according to each target signal period.
Specifically, the method comprises the following steps:
Figure BDA0003619645590000112
s402: determining a corresponding stay signal period of the passing vehicle according to the corresponding stay times of the passing vehicle; the corresponding stopping signal period of the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
s403: taking a passing vehicle with a stay signal period as the target signal period and a vehicle which stays in the target signal period and is determined according to other signal periods as a target vehicle corresponding to the target signal period; wherein, the other signal periods are signal periods except the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
for example, the preset time period is 11:00 to 11:08, the signal period is 2 minutes, and then the target signal period is 11: 00-11: 02, 11: 02-11: 04, 11: 04-11: 06, 11: 06-11: 08;
for a target signal period of 11: 00-11: 02, firstly, a passing vehicle in the target time period is determined, and then, according to a time range to which the travel time of the passing vehicle belongs, the number of stops corresponding to the passing vehicle is determined, for example, a vehicle with the number of stops of 0 is 0, a vehicle with the number of stops of 1 is 2, and a vehicle with the number of stops of 2 is 3.
The number of the vehicles with the stop number of 1 is 2, and the signal period of the stop of the 2 passing vehicles is 11: 00-11: 02; the number of the vehicles staying for 2 times is 3, the signal period of the 3 passing vehicles staying is 10: 58-11: 00 and 11: 00-11: 02, namely the 3 passing vehicles stay in the two signal periods.
For a target signal period of 11: 02-11: 04, firstly, a passing vehicle in the target time period is determined, and then, according to a time range to which the travel time of the passing vehicle belongs, the number of stay times corresponding to the passing vehicle is determined, for example, a vehicle with 0 stay times is 0, a vehicle with 1 stay times is 3, a vehicle with 2 stay times is 3, and a vehicle with 3 stay times is 2.
3 vehicles with the stop times of 1 are adopted, and the signal period of the stop of the 3 passing vehicles is 11: 02-11: 04; the number of the vehicles staying for 2 times is 3, and the signal cycle of the 3 passing vehicles staying is 11: 02-11: 04 and 11: 00-11: 02; the number of the vehicles staying for 3 times is 2, and the signal cycle of the 2 passing vehicles staying is 11: 02-11: 04, 11: 00-11: 02 and 10: 58-11: 00.
For a target signal period of 11: 04-11: 06, firstly determining a passing vehicle in the target time period, and then determining the corresponding stop times of the passing vehicle according to the time range to which the travel time of the passing vehicle belongs, wherein for example, the vehicle with the stop time of 1 is 2, the vehicle with the stop time of 2 is 3, and the vehicle with the stop time of 3 is 2.
2 vehicles with the stopping times of 1 are stopped, and the signal cycle of stopping of the 2 passing vehicles is 11: 04-11: 06; the number of the vehicles staying for 2 times is 3, and the signal cycle of the 3 passing vehicles staying is 11: 04-11: 06, 11: 02-11: 04; the number of the vehicles staying for 3 times is 2, and the signal cycle of the 2 passing vehicles staying is 11: 04-11: 06, 11: 02-11: 04 and 11: 00-11: 02.
According to the method, for a target signal period of 11: 06-11: 08, a passing vehicle in the target time period is determined, and then the corresponding stopping times of the passing vehicle are determined according to the time range of the travel time of the passing vehicle, for example, the vehicle with the stopping times of 0 is 0, the vehicle with the stopping times of 1 is 1, the vehicle with the stopping times of 2 is 3, and the vehicle with the stopping times of 3 is 3.
1 vehicle with the stop number of 1 is adopted, and the signal period of the stop of the 1 vehicle passing is 11: 06-11: 08; the number of the vehicles staying for 2 times is 3; the signal cycle of the 3 passing vehicles is 11: 04-11: 06, 11: 06-11: 08; the number of the vehicles staying for 3 times is 3, and the signal cycle of the 3 passing vehicles staying is 11: 02-11: 04, 11: 04-11: 06 and 11: 06-11: 08.
In summary, the signal cycle of the stationary vehicle is shown in table 1.
TABLE 1
11:00～11:02 11:02～11:04 11:04～11:06 11:06～11:08
10:58～11:00 3 2
11:00～11:02 2+3 3+2 2
11:02～11:04 3+3+2 3+2 3
11:04～11:06 2+3+2 3+3
11:06～11:08 1+3+3
Then the target signal period is 11: 00-11: 02, 11: 02-11: 04, 11: 04-11: 06, 11: 06-11: 08; the target vehicles corresponding to the target signal periods 11: 00-11: 02 are 5 determined by 11: 00-11: 02, the vehicles determined by 11: 02-11: 04 are 5, the vehicles determined by 11: 04-11: 06 are 2, and then the target vehicles corresponding to 11: 00-11: 02 are 5+5+ 2-12;
when the target signal period is 11: 00-11: 02, 5 passing vehicles with the stay signal period as the target signal period are determined, other signal periods are 11: 02-11: 04 and 11: 04-11: 06, 5 vehicles which are determined by the other signal periods and stay in the target signal period are corresponding to 11: 02-11: 04, 2 vehicles which are determined by the other signal periods and correspond to 11: 04-11: 06, and 12 target vehicles which are determined by the target signal period and correspond to 11: 00-11: 02.
8 target vehicles 11: 02-11: 04 correspond to 8 determined vehicles 11: 02-11: 04, 5 vehicles 11: 04-11: 06, 3 vehicles 11: 06-11: 08 correspond to 16 target vehicles 11: 02-11: 04; the number of the vehicles staying in the target signal period is determined to be 5+ 3-8 in other signal periods;
the number of the target vehicles corresponding to 11: 04-11: 06 is 7 determined by 11: 04-11: 06, the number of the vehicles determined by 11: 06-11: 08 is 6, and then the number of the target vehicles corresponding to 11: 04-11: 06 is 13.
The number of the target vehicles corresponding to 11: 06-11: 08 is 7, and the number of the target vehicles corresponding to 11: 06-11: 08 is 7.
Of course, if each vehicle is recorded according to the license plate number, the license plate numbers of all vehicles corresponding to each target signal period can be determined. The above description is for convenience only and is statistical in number.
S404: determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
The longest queuing length of the plurality of lanes of the target road section in the queuing lengths of each target signal cycle can be selected as the queuing length of the target road section.
Or, determining an average value of the queuing lengths of the plurality of lanes of the target road section in each target signal period, and taking the average value as the queuing length of the target road section.
Because the target road section is not only not had non-canalization and widens the lane, also canalization widens the lane, to the canalization lane attribute of different grade type, the mode of seeking the length of lining up is different, specifically:
for each lane of the target road section, if the lane type of the lane is a non-channelized broadening type, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
Compared with the channelized widening, the non-channelized widening indicates that the number of lanes at the intersection is consistent with that of lanes at a road section, for example, one road section is provided, and the number of lanes at the upstream intersection a and the downstream intersection B is 4.
If the number of lanes at the canalization widened road-indicating opening is more than that of lanes at the road section, compared with the number of lanes at the road section, the number of lanes at the upstream road-indicating opening is 4 (the number of lanes is respectively 1, 2, 3 and 4), the number of lanes at the downstream road-indicating opening is 5 (the number of lanes is respectively 0, 1, 2, 3 and 4, green belts are compressed, a left-turn lane is widened by 0), and then the left-turn lane with the number of the left-turn lane being 0 is the widened lane.
And when the lane type of the lane is a non-channelized broadening type, directly taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period.
If the lane type of the lane is a channelized widening type, namely a left-turn or right-turn lane, and the sum of the lengths of all target vehicles corresponding to the target signal cycle is not greater than the length of a channelized segment in the target road section, taking the sum of the lengths as the queuing length of the lane in each target signal cycle;
if the lane type of the lane is a channelized extended type, and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, it is indicated that vehicles are queued in other lanes in the lane, and only the length of the channelized section in the target road section can be used as the queuing length of the lane in each target signal period.
When the sum of the lengths of all the target vehicles corresponding to each target signal period is larger than the length of the channelized section in the target road section, the vehicles generally queue in the lanes beside the lane, the number of the vehicles queued in other lanes is obtained according to the difference between the sum of the lengths and the length of the channelized section, and then the number is added to the number of the queued vehicles corresponding to the lanes beside the lane.
As shown in fig. 5, when the lane 1 is a left-turn lane, the lanes 2 and 3 are straight lanes, and the lane 1 is a channeling widening type, then when the sum of the lengths of all target vehicles corresponding to each target signal period is greater than the length of a channeled section in the target road section, several vehicles can be calculated for the excess length, for example, 5 vehicles pass through the lane 1, 3 vehicles pass through the lane 2, and 3 vehicles pass through the lane 3, but the length of 5 vehicles exceeds the length of the lane 1, that is, the length of the channeled section, for example, 2 vehicles, then it is considered that the actual queuing length of the lane 1 is the length of the channeled section, and since the lanes 2 and 1 are in close proximity, it is determined that the two vehicles are queued in the lane 2, and then the originally determined queued vehicle length of the lane 2 is 3 vehicles, and then the queued vehicle length of the lane 2 is updated to be 5 vehicles. Then in practice the queue situation is shown in fig. 5 with lane 1 queuing 3 cars, lane 2 queuing 5 cars and lane 3 queuing 3 cars.
The vehicle passing method for calculating the sum of the lengths of all target vehicles corresponding to each target signal period is as follows:
the type of the vehicle, for example, a large vehicle having a preset large vehicle length, a small vehicle having a preset small vehicle length, etc., can be recognized from the image of the vehicle photographed by the electronic eye. It is possible to determine whether all the target vehicles corresponding to each target signal period belong to a large vehicle or a small vehicle, determine the lengths thereof, and calculate the sum of the lengths.
Or, because the vehicles generally have brand and model marks, the brand and model marks on the vehicles can be identified according to the vehicle images shot by the electronic eyes, so that the lengths of the vehicles are matched according to the brand and model marks on the vehicles, all the vehicles corresponding to each target signal period find the lengths of the vehicles according to the method, and the lengths are added to obtain the queuing length of the lane in each target signal period.
Or if the lengths of the vehicles are all average values, directly multiplying the number of the target vehicles corresponding to each target signal period by the average value of the lengths to obtain a product, namely the sum of the lengths of all the target vehicles corresponding to each target signal period.
In the practical application process, when the target road section is not congested, vehicles pass through the target road section, and the queuing length of the target road section can also be obtained. Specifically, the method comprises the following steps:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed the preset congestion state in the target signal period, and the target road section is determined to drive the vehicle according to the acquisition information sent by the acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
For the manner of obtaining the first queue length, refer to the above description.
If the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed the preset congestion state in the target signal period, and the target road section is determined not to drive the vehicle according to the acquisition information sent by the acquisition equipment in the target road section, determining that the target road section is not queued.
When the target road section is not congested and vehicles are not collected through the collecting device of the target road section, it indicates that no vehicles exist and the target road section may be in a night time period or the like.
As shown in fig. 6, the present invention also provides a road segment queuing length determining apparatus, including:
a determining module 600, configured to determine a target road segment for which a queuing length needs to be determined and a preset time period;
a queuing length determining module 601, configured to determine, for each target signal cycle, a queuing length of a target road segment in the target signal cycle according to a first queuing length of the target road segment in the target signal cycle determined by the acquisition information and a second queuing length of the target road segment in the target signal cycle determined by the road segment information detected by the preset network platform, if, in the target signal cycle, a congestion state of a sub-road segment closest to a stop line of a downstream intersection in the target road segment exceeds a preset congestion state, and it is determined that the target road segment drives through a vehicle according to the acquisition information sent by the acquisition device in the target road segment; wherein the target signal cycle is a signal cycle within the preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light; if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period; and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal period.
Optionally, the queue length determining module 601 is specifically configured to determine, for each lane of the target road segment, at least one target vehicle that travels through the lane in the target signal cycle; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times; wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stopping times are the times of signal cycles of the vehicle stopping at the downstream intersection of the target road section;
determining a corresponding stop signal period of the passing vehicle according to the corresponding stop times of the passing vehicle; the stop signal period corresponding to the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
taking the passing vehicle with the stay signal period as the target signal period and the vehicle staying in the target signal period determined according to other signal periods as the target vehicle corresponding to the target signal period; wherein the other signal period is a signal period except for the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
Optionally, the queue length determining module 601 is specifically configured to determine, in the target signal period, a vehicle that is driven out of a downstream intersection of the lane;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive out of the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
Optionally, the queuing length determining module 601 is specifically configured to, for each lane of the target road segment, if the lane type of the lane is a non-channelized widening type, take a sum of lengths of all target vehicles corresponding to the target signal cycle as a queuing length of the lane in the target signal cycle;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
Optionally, the queue length determining module 601 is further configured to:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed a preset congestion state in the target signal period, and the target road section is determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
In addition, the method and the apparatus for determining the road segment queuing length according to the embodiments of the present invention described in conjunction with fig. 1 to 6 may be implemented by an electronic device.
The electronic device comprises a communication unit and a processor;
the communication unit is used for receiving acquisition information sent by acquisition equipment in a target road section and receiving the queuing length of each lane determined by the preset network platform;
the processor is used for determining a target road section of which the queuing length needs to be determined and a preset time period;
for each target signal period, if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and a vehicle is determined to pass through the target road section according to acquisition information sent by acquisition equipment in the target road section, determining the queuing length of the target road section in the target signal period according to a first queuing length of the target road section in the target signal period determined by the acquisition information and a second queuing length of the target road section in the target signal period determined according to road section information detected by a preset network platform; wherein the target signal cycle is a signal cycle within the preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period;
and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal period.
Optionally, the processor is specifically configured to:
for each lane of a target road segment, determining at least one target vehicle driving through the lane within the target signal period; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times; wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stopping times are the times of signal cycles of the vehicle stopping at the downstream intersection of the target road section; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
determining a corresponding stop signal period of the passing vehicle according to the corresponding stop times of the passing vehicle; the stop signal period corresponding to the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
taking the passing vehicle with the stay signal period as the target signal period and the vehicle staying in the target signal period determined according to other signal periods as the target vehicle corresponding to the target signal period; wherein the other signal period is a signal period except for the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
Optionally, the processor is specifically configured to:
determining vehicles driving out of a downstream intersection of the lane in the preset time period;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive out of the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
Optionally, the processor is specifically configured to:
for each lane of the target road section, if the lane type of the lane is a non-channelized broadening type, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
Optionally, the processor is further configured to:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed a preset congestion state in the target signal period, and the target road section is determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
Fig. 7 shows a schematic structural diagram of the electronic device 100.
The following specifically describes an embodiment by taking the electronic device 100 as an example. It should be understood that the electronic device 100 shown in fig. 7 is merely an example, and that the electronic device 100 may have more or fewer components than shown in fig. 7, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
A block diagram of a hardware configuration of the electronic apparatus 100 according to an exemplary embodiment is exemplarily shown in fig. 7. As shown in fig. 7, the electronic apparatus 100 includes: memory 710, display unit 720, Wireless Fidelity (Wi-Fi) module 730, processor 740, bluetooth module 750, and power supply 760.
The memory 710 may be used to store software programs and data. The processor 740 performs various functions of the electronic device 100 and data processing by executing software programs or data stored in the memory 710. The memory 710 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. The memory 710 stores an operating system that enables the electronic device 100 to operate. The memory 710 may store an operating system and various application programs, and may also store code for performing the methods described in the embodiments of the present application.
The display unit 720 may be used to receive input numeric or character information and generate signal input related to user settings and function control of the electronic device 100, and particularly, the display unit 720 may include a touch screen 721 disposed on the front of the electronic device 100 and capable of collecting touch operations of a user thereon or nearby, such as clicking a button, dragging a scroll box, and the like. For example, the user may input a preset time period and a target section through the touch screen 721.
The display unit 720 may also be used to display information input by or provided to the user and a Graphical User Interface (GUI) of various menus of the electronic apparatus 100. In particular, the display unit 720 may include a display screen 722 disposed on a front side of the electronic device 100. The display screen 722 may be configured in the form of a liquid crystal display, a light emitting diode, or the like. The display unit 720 may be used to display various graphical user interfaces described herein.
The touch screen 721 may be covered on the display screen 722, or the touch screen 721 and the display screen 722 may be integrated to implement the input and output functions of the electronic device 100, and after the integration, the touch screen may be referred to as a touch display screen for short. The display unit 720 in this application can display the application programs and the corresponding operation steps. The display screen 722 is used to display the queue length of the target road segment.
Wi-Fi belongs to short-distance wireless transmission technology, and the electronic device 100 can help a user to send and receive e-mails, browse webpages, access streaming media and the like through the Wi-Fi module 730, and provides wireless broadband Internet access for the user. For example, Wi-Fi module 730 is used to receive data for the electronic eye.
And the bluetooth module 750 is used for performing information interaction with other bluetooth devices having the bluetooth module through a bluetooth protocol. For example, the electronic device 100 may establish a bluetooth connection with a wearable electronic device (e.g., a smart watch) that is also equipped with a bluetooth module through the bluetooth module 750, so as to perform data interaction. Similarly, the bluetooth module 750 is used for receiving data of the electronic eye.
The processor 740 is a control center of the electronic apparatus 100, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the electronic apparatus 100 and processes data by running or executing software programs stored in the memory 710 and calling data stored in the memory 710. In some embodiments, processor 740 may include one or more processing units; the processor 740 may also integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a baseband processor, which mainly handles wireless communications. It will be appreciated that the baseband processor described above may not be integrated into the processor 740. In the present application, the processor 740 may run an operating system, an application program, a user interface display, a touch response, and the processing method described in the embodiments of the present application. Additionally, processor 740 is coupled to display unit 720.
The electronic device 100 also includes a power source 760 (e.g., a battery) that powers the various components. The power source may be logically coupled to the processor 740 through a power management system, such that functions of managing charging, discharging, and power consumption are implemented through the power management system. The electronic device 100 may further be configured with a power button for powering on and off the terminal, and locking the screen.
In addition, in combination with the electronic device in the above embodiments, an embodiment of the present invention may provide a storage medium, where instructions executed by a processor of the electronic device enable the electronic device to execute the road segment queuing length determination method according to any one of the above embodiments.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. An electronic device, comprising: a communication unit and a processor;
the communication unit is used for receiving acquisition information sent by acquisition equipment in a target road section and receiving the queuing length of each lane determined by the preset network platform;
the processor is used for determining a target road section of which the queuing length needs to be determined and a preset time period;
for each target signal period, if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and a vehicle is determined to pass through the target road section according to acquisition information sent by acquisition equipment in the target road section, determining the queuing length of the target road section in the target signal period according to a first queuing length of the target road section in the target signal period determined by the acquisition information and a second queuing length of the target road section in the target signal period determined according to road section information detected by a preset network platform; wherein the target signal cycle is a signal cycle within the preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period;
and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal period.
2. The electronic device of claim 1, wherein the processor is specifically configured to:
for each lane of a target road segment, determining at least one target vehicle driving through the lane within the target signal period; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times; wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stopping times are the times of signal cycles of the vehicle stopping at the downstream intersection of the target road section; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
determining a corresponding stopping signal period of the passing vehicle according to the corresponding stopping times of the passing vehicle; the stop signal period corresponding to the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
taking the passing vehicle with the stay signal period as the target signal period and the vehicle staying in the target signal period determined according to other signal periods as the target vehicle corresponding to the target signal period; wherein the other signal period is a signal period except for the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
3. The electronic device of claim 1, wherein the processor is specifically configured to:
determining vehicles driving out of a downstream intersection of the lane in the preset time period;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive out of the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
4. The electronic device of claim 1, wherein the processor is specifically configured to:
for each lane of the target road section, if the lane type of the lane is a non-channelized broadening type, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
5. The electronic device of any of claims 1-4, wherein the processor is further configured to:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed a preset congestion state in the target signal period and the target road section is determined to drive vehicles according to acquisition information sent by acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
6. A method for determining a length of a line in a road segment, comprising:
determining a target road section of which the queuing length needs to be determined and a preset time period;
for each target signal period, if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and a vehicle is determined to pass through the target road section according to acquisition information sent by acquisition equipment in the target road section, determining the queuing length of the target road section in the target signal period according to a first queuing length of the target road section in the target signal period determined by the acquisition information and a second queuing length of the target road section in the target signal period determined according to road section information detected by a preset network platform; the target signal cycle is a signal cycle within the preset time period; the signal cycle is the time taken by a signal lamp of a downstream intersection of the target road section to go from a red light to the next red light;
if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section exceeds a preset congestion state in the target signal period and the target road section is not determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the second queuing length as the queuing length of the target road section in the target signal period;
and determining the queuing length of the target road section in the preset time period according to the queuing length of the target road section in each target signal period.
7. The link queuing length determining method according to claim 6, wherein the first queuing length is determined by:
for each lane of a target road segment, determining at least one target vehicle driving through the lane within the target signal period; the target vehicle is a vehicle which drives out from the downstream intersection of the lane of the target road section after driving through the upstream intersection of the target road section;
determining the stopping times corresponding to the time range to which the travel time of the vehicle on the target road section belongs according to the corresponding relation between the time range and the stopping times; wherein the passing vehicle is a target vehicle passing through a downstream intersection of the target road segment within the target signal period; the stopping times are the times of signal cycles of the vehicle stopping at the downstream intersection of the target road section;
determining a corresponding stopping signal period of the passing vehicle according to the corresponding stopping times of the passing vehicle; the stop signal period corresponding to the passing vehicle is the signal period of the passing vehicle stopping at the downstream intersection of the target road section;
taking the passing vehicle with the stay signal period as the target signal period and the vehicle staying in the target signal period determined according to other signal periods as the target vehicle corresponding to the target signal period; wherein the other signal period is a signal period except for the staying signal period as a target signal period; the target vehicle corresponding to the target signal period is a target vehicle staying at a downstream intersection of the target road section in the target signal period;
determining the queuing length of each lane in each target signal period according to the length of a target vehicle corresponding to the target signal period of each lane and the lane type of each lane; and determining the queuing length of the target road section in the target signal period according to the queuing length of each lane in the target signal period.
8. The link queue length determination method according to claim 7, wherein determining at least one target vehicle that travels through the lane during the target signal period comprises:
determining a vehicle to exit a downstream intersection of the lane within the target signal period;
for each vehicle driving out of the downstream intersection of the lane, within a preset time before the driving-out time of the vehicle, if the vehicle is found to drive out of the upstream intersection of the target road section, determining the vehicle as the target vehicle; the preset time length is determined according to the length of the target road section, the vehicle speed corresponding to the target road section and the preset traffic jam time length.
9. The method for determining the section queuing length according to claim 7, wherein the step of determining the queuing length of each lane in each target signal cycle according to the length of the target vehicle corresponding to the target signal cycle of each lane and the lane type of each lane comprises the following steps:
for each lane of the target road section, if the lane type of the lane is a non-channelized widening type, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is not greater than the length of a channelized section in the target road section, taking the sum of the lengths of all target vehicles corresponding to the target signal period as the queuing length of the lane in the target signal period;
and if the lane type of the lane is a channelized widening type and the sum of the lengths of all target vehicles corresponding to the target signal period is greater than the length of the channelized section in the target road section, taking the length of the channelized section in the target road section as the queuing length of the lane in the target signal period.
10. The road segment queuing length determining method according to any one of claims 6 to 9, further comprising:
and if the congestion state of a sub-road section closest to a stop line of a downstream intersection in the target road section does not exceed a preset congestion state in the target signal period, and the target road section is determined to drive the vehicle according to acquisition information sent by acquisition equipment in the target road section, taking the first queuing length as the queuing length of the target road section in the target signal period.
CN202210458603.0A 2022-04-24 2022-04-24 Electronic equipment and road section queuing length determining method Active CN114898575B (en)

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