CN113838286B - Road section temporary parking evaluation method and device - Google Patents
Road section temporary parking evaluation method and device Download PDFInfo
- Publication number
- CN113838286B CN113838286B CN202111190838.8A CN202111190838A CN113838286B CN 113838286 B CN113838286 B CN 113838286B CN 202111190838 A CN202111190838 A CN 202111190838A CN 113838286 B CN113838286 B CN 113838286B
- Authority
- CN
- China
- Prior art keywords
- vehicle
- benefit
- traffic
- road section
- phase sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
-
- 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
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a method and a device for evaluating temporary parking of a road section. The method for evaluating the temporary stopping of the road section comprises the following steps: firstly, judging illegal vehicles on a road section to be evaluated; and secondly, evaluating the influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle. Firstly, determining a violation influence road section: the current illegal parking vehicle and a road section before the illegal parking vehicle with the nearest distance from the rear side are illegal parking influence road sections; secondly, calculating the influence coefficient of the current illegal parking vehicle; and thirdly, comparing the violation influence coefficients with the violation influence coefficients of different traffic saturations to obtain corresponding violation early warning levels, and sending corresponding violation prompts. The invention avoids the defects of the existing vehicle temporary parking supervision technology, and solves the problems of vehicle illegal parking evaluation and road section temporary parking design basis providing.
Description
Technical Field
The present invention relates to an evaluation method and apparatus, and more particularly, to a road section temporary stop evaluation method and a road section temporary stop evaluation apparatus.
Background
The random parking of the roads in the urban area not only influences the vehicle passing, but also causes congestion and easily causes road traffic accidents. Some urban traffic management departments set up traffic rules such as 'urban area standard parking clear traffic rules', etc., but due to randomness and uncertainty of temporary parking, the temporary parking supervision has blind areas.
With the increase of urban motor vehicles in recent years, some special event scenes allow a part of vehicles to temporarily stop, such as the pickup of students of lower grades such as middle and primary schools. However, the section of the temporary stop and the stoppable time are not based on the experience, and are often set. Particularly, in the traffic peak period, the temporary stopping time is related to the personal quality of citizens and the like, so the supervision difficulty is higher, the supervision delay effect is obvious, and short-time local traffic jam is easily caused.
Disclosure of Invention
The invention provides a road section temporary parking evaluation method and a road section temporary parking evaluation device, aiming at avoiding the defects of the conventional vehicle temporary parking supervision technology and solving the problems of vehicle illegal parking evaluation and road section temporary parking design basis providing.
The invention is realized by adopting the following scheme: a road section temporary parking evaluation method comprises the following steps:
firstly, judging illegal vehicles on a road section to be evaluated;
secondly, evaluating an influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle;
firstly, determining a violation influence road section: the current illegal parking vehicle and a road section before the illegal parking vehicle with the nearest distance from the rear side are illegal parking influence road sections;
secondly, calculating an illegal parking influence coefficient r of the current illegal parking vehicle;
where n3 represents the total number of vehicles in the parking violation influence road section where the current parking violation vehicle is located, ndRepresenting the total number of the decelerated vehicles in the current illegal parking vehicle illegal parking influence road section, ncIndicates the total number of vehicles with changed lanes in the current illegal parking vehicle illegal parking influence road section, wdAnd wcWeighting factors representing a decelerating vehicle and a lane-changing vehicle, respectively;
comparing the violation influence coefficient r with violation influence coefficients of different traffic saturations to obtain corresponding violation early warning levels, and sending corresponding violation prompts:
①r<＝RLthen the illegal parking is sent-the influence is light-the driving away is carried out as soon as possible;
②RL<r<＝RMthen, the illegal parking is sent-the influence is larger-the vehicle leaves as soon as possible;
③RM<r<＝RHthen, the illegal parking is sent-the influence is great-the vehicle is driven away as soon as possible;
④RH<r, then sending illegal parking-seriously influencing-driving away as soon as possible;
wherein, road traffic saturation sets gradually from low to high: rLIs the influence coefficient of the illegal stopping when the road traffic saturation is lower, RMIs the influence coefficient of the violation of the stationary in the road traffic saturation, RHThe influence coefficient of the illegal parking when the road traffic saturation is higher is RH。
As a further improvement of the above scheme, the method for evaluating temporary stopping of a road section further includes the steps of:
and fourthly, judging again at certain intervals, and if the same vehicle is continuously and repeatedly violated, sending violation information to a traffic command center for reporting.
Further, the method for evaluating temporary stop of road section further comprises the following steps:
fifthly, the road temporary stopping basis is as follows: and calculating the temporary stopping influence coefficient of the road section to be evaluated in different time periods and traffic flow, and if the temporary stopping influence coefficient is smaller than a temporary stopping preset value, taking the temporary stopping influence coefficient as a reference basis for defining the corresponding temporary stopping time period of the temporary parking space.
As a further improvement of the above aspect, the method for determining vehicle parking violation includes the steps of:
(1) calculating an average vehicle speed of a vehicle
Sequencing all vehicle positions on each lane number on the road section to be evaluated according to the driving direction on the current lane number;
and when the time t1 is obtained, recording the positions of all vehicles on the road section to be evaluated as SN1 m,t1: at the representation time t1, the vehicle position S of the vehicle number m on the lane number N1 on the road section to be evaluatedN1 m,t1；
And when the time t1 is calculated, the vehicle speeds of all vehicles on the road section to be evaluated are as follows: from the front-to-back time interval Δ t1, the average vehicle speed of the vehicle is calculated and recorded as vN1 m,t1And when the representation time t1 is reached, the average vehicle speed v of the vehicle with the vehicle number m on the lane number N1 on the road section to be evaluatedN1 m,t1；vN1 m,t1＝(SN1 m,t1-SN1 m,(t1-Δt1))/Δt1；
If the average vehicle speed of the vehicle is less than a preset value epsilon 1 for n2 continuous times, judging that the corresponding vehicle stops;
(2) calculating the following distance of the vehicle
According to the vehicle with the nearest distance to the front, the following distance D is calculatedN1 m,t1: at the characterization time t1, the following distance D between the vehicle of the vehicle number m and the vehicle of the vehicle number m-1, which is the vehicle of the nearest vehicle distance aheadN1 m,t1；DN1 m,t1＝SN1 (m-1),t1-SN1 m,t1；
According to a preset minimum driving speed VminCalculating the minimum following distance L of the vehicleminf：Lminf＝L0f+Ldf；L0fAs a reaction distance of the driver, L0f＝Vmin*T0，T0Brake reaction time for the driver; l isdfIs the minimum braking distance, L, of the vehicledf＝(Vmin)2/(2*dmax)，dmaxIs the maximum braking deceleration of the vehicle;
(3) determining whether a vehicle is parked illegally
And if the vehicle stops and the vehicle following distance is greater than the minimum vehicle following distance, judging that the corresponding vehicle violates the parking.
As a further improvement of the above, RLIs the influence coefficient of the violation when the road traffic saturation is 10 percent, RMIs the influence coefficient of the violation when the road traffic saturation is 40 percent, RHThe influence coefficient of the violation when the road traffic saturation is 85 percent is RH。
As a further improvement of the above, wdAnd wcAre obtained by calibration through tests.
As a further improvement of the above scheme, the road section to be evaluated has at least one intersection, and the intersection adopts an intersection phase sequence traffic benefit evaluation method to evaluate the intersection phase sequence traffic benefit of the intersection;
assuming that each period of the intersection passing phase sequence has M +1 phase sequences; the intersection phase sequence traffic benefit evaluation method comprises the following steps:
s1, calculating the crossing traffic benefit:
wherein, B represents the crossing passing benefit; i represents the current phase sequence number of the intersection, i is 0,1,2, … …, M; b isiRepresenting the total passing benefit of all vehicles at the road junction when the current phase sequence number is i;
s2, calculating an intersection passing benefit early warning coefficient R according to the intersection passing benefitN,KThe traffic benefit early warning coefficient RN,KThe calculation method comprises the following steps:
s21, calculating the absolute value of the difference between the total passing benefit of all vehicles at the intersection and the passing benefit of the intersection under different phase sequence numbers:
ΔBi＝|Bi-B|
wherein, Delta BiRepresents the total passing benefit B of all vehicles at the road junction when the phase sequence number is iiThe difference from the crossing passing benefit B;
s22, acquiring a maximum absolute value Delta B: Δ B { [ max { [ Δ ] B { [ means ]i，i＝0，1，2，……，M}，
S23, finding the phase sequence number corresponding to the maximum absolute value and recording as the phase sequence number K;
s24, calculating crossing traffic benefit early warning coefficient r of phase sequence number KK：
S25, if the phase sequence numbers K corresponding to the maximum absolute values found in N continuous periods are the same, using N crossing traffic benefit early warning coefficients rKAverage is carried out to obtain an average crossing traffic benefit early warning coefficient RN,K：
Wherein R isN,KRepresenting the average crossing traffic benefit early warning coefficient of continuous N periods and phase sequence number K;
rN,Kthe early warning coefficient of the crossing traffic benefit of the current period N and the phase sequence number K;
rN-1,Kthe early warning coefficient of the crossing traffic benefit of the previous cycle N-1 and the phase sequence number K;
r1,Kthe crossing traffic benefit early warning coefficient is the first period of the N periods and the phase sequence number K;
s3, carrying out crossing passing benefit early warning according to the crossing passing benefit early warning coefficient;
according to the crossing traffic efficiency early warning coefficient RN,KAnd comparing the traffic efficiency with the phase traffic efficiency early warning coefficients of different traffic saturation degrees to obtain corresponding early warning grades:
when R isN,K≤RLJudging that the phase sequence numbers of M +1 phase sequences of the current period N are reasonably sorted;
when R isL＜RN,K≤RMJudging that the phase sequence number ordering of M +1 phase sequences of the current period N needs to be vigilant, and prompting to pay attention to the phase sequence number K;
when R isN,K＞RHJudging that the phase sequence numbers of the M +1 phase sequences in the current period N are not reasonably sorted, and prompting to adjust the phase sequence number K;
wherein R isLLower limit value of early warning coefficient for crossing traffic efficiency, RMFor the early warning coefficient of crossing traffic efficiency, prompting limit value, RHAnd the upper limit value of the efficiency early warning coefficient is the crossing traffic efficiency.
Further, when the current phase sequence number is i, the total passing benefit B of all vehicles at the road junction isiThe calculating method comprises the following steps:
wherein G isiThe total number of the vehicles passing through the road junction when the current phase sequence number is i; n isiWhen the current phase sequence number is i, the vehicles currently passing through the road junction are obtained; b isn,iWhen the current phase sequence number is i, the current passing vehicle n at the road junctioniThe vehicle passing benefit.
Preferably, when the current phase sequence serial number is i, the vehicle n currently passing through the road junction isiVehicle passing benefit Bn,iThe calculation method comprises the following steps:
Bn,i＝E0/Ei；
wherein E is0For vehicles following a clear road, i.e. average speed V0Normal running LizTo LitEnergy consumption of the passage, L, produced by the timeizThe position of crossroad zebra crossing, LitIs the vehicle position at time t; eiFor a vehicle n currently passing at the intersection under the current phase sequence number iiL ofizTo LitThe traffic energy generated by the time is consumed.
The invention also provides a road section temporary parking evaluation device, which adopts the above-mentioned evaluation method for any road section temporary parking, and the road section temporary parking evaluation device comprises:
the mobile terminal is arranged in a vehicle and used for providing the position of the corresponding vehicle and vehicle running license information;
the fixed end is arranged in the road section to be evaluated and is used for acquiring and storing the positions of corresponding vehicles and vehicle driving license information sent by all the mobile ends in the road section to be evaluated in real time;
the fixed end comprises an illegal parking vehicle judging device, an influence coefficient evaluating device and an illegal parking early warning grade setting device;
the illegal parking vehicle judgment device is used for judging illegal parking vehicles on the road section to be evaluated;
the influence coefficient evaluation device is used for evaluating the influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle;
the illegal parking early warning grade setting device compares the illegal parking influence coefficient with illegal parking influence coefficients of different traffic saturations to obtain a corresponding illegal parking early warning grade, and sends a corresponding illegal parking prompt.
The mobile end of the invention is fixedly arranged in a running vehicle and sends real-time information to the fixed end. The real-time information includes a location and a vehicle driving license. And the fixed end acquires the real-time information of the mobile end in the current road section, calculates to obtain the speed information of different running vehicles in the road section, further judges whether the vehicles violate, feeds back a processing result to the mobile end corresponding to the violating vehicle, and simultaneously sends the processing result to the traffic command center. The method judges whether the illegal parking exists or not through the real-time speed of the vehicle, further calculates the influence coefficient of the illegal parking of the vehicle on the road traffic, and provides a basis for the evaluation of the illegal parking of the vehicle and the design of the temporary parking of the road. The method can effectively prompt the vehicle to stop illegally, reduce the influence of temporary stop on road traffic and make up the blank of the prior art.
Meanwhile, the invention calculates the vehicle passing benefit by integrating the vehicle passing efficiency and the passing energy consumption, provides the intersection phase sequence evaluation criterion and provides a basis for intersection phase sequence design and evaluation. The method can improve the traffic benefit of the intersection phase sequence, not only saves traffic time, but also reduces energy consumption, fills the blank of the prior art, and is convenient for saving energy and protecting environment.
Drawings
Fig. 1 is a flowchart of a road section temporary parking evaluation method according to embodiment 1 of the present invention.
FIG. 2 is a schematic view of a roadway and a vehicle employing the method of FIG. 1.
Fig. 3 is a flowchart of a crossing phase sequence traffic benefit evaluation method adopted by the road section temporary stopping evaluation method in fig. 1.
Fig. 4 is a block diagram showing a structure of a road section temporary stop evaluation device according to embodiment 2 of the present invention.
Fig. 5 is a block diagram of a structure of an intersection phase sequence traffic benefit evaluation device adopted by the road section temporary stopping evaluation device in fig. 4.
Fig. 6 is a traffic benefit evaluation flow chart of the intersection phase sequence traffic benefit evaluation method in fig. 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
The method for evaluating temporary parking of the road section solves the problems of evaluation of vehicle violation and provision of road section temporary parking design basis for avoiding the defects of the conventional vehicle temporary parking supervision technology. Referring to fig. 1, the method for evaluating temporary stopping of a road section includes the following steps:
firstly, judging illegal vehicles on a road section to be evaluated;
secondly, evaluating an influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle;
comparing the parking violation influence coefficients with the parking violation influence coefficients of different traffic saturations to obtain corresponding parking violation early warning levels, and sending corresponding parking violation prompts;
fourthly, judging again at certain intervals, and if the same vehicle is continuously subjected to illegal parking for multiple times, sending illegal parking information to a traffic command center for reporting;
fifthly, the road temporary stopping basis is as follows: and calculating the temporary stopping influence coefficient of the road section to be evaluated in different time periods and traffic flow, and if the temporary stopping influence coefficient is smaller than a temporary stopping preset value, taking the temporary stopping influence coefficient as a reference basis for defining the corresponding temporary stopping time period of the temporary parking space.
As shown in fig. 2, in the present embodiment, it is assumed that the current link has two driving lanes, lane 1 and lane 2, respectively, and is denoted by the number N, as shown in fig. 1 below. The current vehicle is traveling in lane 1, i.e., N-1, and the analysis is similar if traveling in lane 2.
The vehicle normally runs without lane change. If the front vehicle is illegal to stop, the current vehicle can change lanes to continue to move forwards under the condition of meeting lane change conditions.
In the first step, the method for determining the vehicle parking violation comprises the following steps:
(1) calculating an average vehicle speed of a vehicle
Sequencing all vehicle positions on each lane number on the road section to be evaluated according to the driving direction on the current lane number;
and when the time t1 is obtained, recording the positions of all vehicles on the road section to be evaluated as SN1 m,t1: at the representation time t1, the vehicle position S of the vehicle number m on the lane number N1 on the road section to be evaluatedN1 m,t1；
And when the time t1 is calculated, the vehicle speeds of all vehicles on the road section to be evaluated are as follows: from the front-to-back time interval Δ t1, the average vehicle speed of the vehicle is calculated and is denoted as vN1 m,t1And when the representation time t1 is reached, the average vehicle speed v of the vehicle with the vehicle number m on the lane number N1 on the road section to be evaluatedN1 m,t1；vN1 m,t1＝(SN1 m,t1-SN1 m,(t1-Δt1))/Δt1；
And if the average vehicle speed of the vehicle is less than a preset value epsilon 1 for n2 times of continuous calculation, judging that the corresponding vehicle is stopped.
In the bookIn the embodiment, the vehicle positions of the two lanes at the current time t are obtained by the fixed end through the movable end, and are respectively marked as SN m,tWhere N denotes a lane number, where N is 1, m denotes a current vehicle number, which is sorted according to the current link driving direction, and t denotes a time t.
Vehicle i speed vN i,t：
From the preceding and following time intervals Δ t, the vehicle average speed v can be calculatedN i,t＝(SN i,t-SN i,(t-Δt))/Δt。
And continuously calculating the average speed of the vehicle for 3 times, and if the average speed of the vehicle is less than a preset value epsilon, judging that the current vehicle stops, namely:
if max (v)N i,t，vN i,,(t-Δt)，vN i,,(t-2Δt))<Epsilon, the current vehicle is in a parking state.
(2) Calculating the following distance of the vehicle
According to the vehicle with the nearest distance to the front, the following distance D is calculatedN1 m,t1: at the characterization time t1, the following distance D between the vehicle of the vehicle number m and the vehicle of the vehicle number m-1, which is the vehicle of the nearest vehicle distance aheadN1 m,t1；DN1 m,t1＝SN1 (m-1),t1-SN1 m,t1；
According to a preset minimum driving speed VminCalculating the minimum following distance L of the vehicleminf：Lminf＝L0f+Ldf；L0fAs a reaction distance of the driver, L0f＝Vmin*T0，T0Brake reaction time for the driver; l is a radical of an alcoholdfIs the minimum braking distance, L, of the vehicledf＝(Vmin)2/(2*dmax)，dmaxIs the maximum braking deceleration of the vehicle.
In the present embodiment, the following distance is calculated according to the distance of the vehicle i from the nearest vehicle ahead:
DN i,t＝SN (i-1),t-SN i,t
presetting the minimum driving speed V according to experience or traffic regulationsminThe minimum following distance of the vehicle can be calculated:
Lminf＝L0f+Ldf
wherein the reaction distance L0f＝Vmin*T0Human braking response time of T0。
Minimum braking distance Ldf＝(Vmin)2V (2 × dmax), uniform deceleration displacement equation.
(3) Determining whether a vehicle is parked illegally
And if the vehicle stops and the vehicle following distance is greater than the minimum vehicle following distance, judging that the corresponding vehicle violates the parking.
In the present embodiment, if the vehicle is parked and the following distance is greater than the minimum following distance, the following two conditions are satisfied simultaneously:
1)max(vN i,t，vN i,,(t-Δt)，vN i,,(t-2Δt))<ε
2)DN i,t>Lminf
the current vehicle is determined to be illicit.
And in the second step, evaluating an influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle. According to fig. 2, first, the violation influencing road section is determined: the current illegal parking vehicle and the road section before the illegal parking vehicle with the distance between the current illegal parking vehicle and the nearest vehicle distance before and after the current illegal parking vehicle are illegal parking influence road sections.
Secondly, calculating an illegal parking influence coefficient r of the current illegal parking vehicle;
where n3 represents the total number of vehicles in the parking violation influence road section where the current parking violation vehicle is located, ndRepresenting the total number of the decelerated vehicles in the current illegal parking vehicle illegal parking influence road section, ncLane-changing vehicle assembly in road section with effect of representing current illegal parking vehicle illegal parkingNumber, wdAnd wcRepresenting the weighting factors of the decelerating vehicle and the lane changing vehicle, respectively.
wdAnd wcThe calibration can be carried out through experiments.
ndAnd ncAnd n, both can be calculated by acquiring the position of the mobile terminal through the fixed terminal, and are not described in detail.
In the third step, comparing the violation influence coefficient r with violation influence coefficients of different traffic saturations to obtain corresponding violation early warning levels, and sending corresponding violation prompts:
①r<＝RLthen the illegal parking is sent-the influence is light-the driving away is carried out as soon as possible;
②RL<r<＝RMthen, the illegal parking is sent-the influence is larger-the vehicle leaves as soon as possible;
③RM<r<＝RHthen, the illegal parking is sent-the influence is great-the vehicle is driven away as soon as possible;
④RH<r, then sending illegal parking-seriously influencing-driving away as soon as possible;
wherein, road traffic saturation sets gradually from low to high: rLIs the influence coefficient of the illegal stopping when the road traffic saturation is lower, RMIs the influence coefficient of the violation of the stationary in the road traffic saturation, RHThe influence coefficient of the illegal parking when the road traffic saturation is higher is RH。
In this embodiment, the influence coefficient of the illegal parking vehicle when the road has different traffic saturations can be obtained according to software simulation or actual measurement at the intersection. The influence coefficient of the violation of the stop with low road traffic saturation (10%) is assumed to be RLThe influence coefficient of the violation at a moderate road traffic saturation (40%) is RMThe influence coefficient of the violation when the road traffic saturation is higher (85%) is RH。
And comparing the calculated illegal parking influence coefficient R of the illegal parking vehicle with illegal parking influence coefficients R of different traffic saturations to obtain a corresponding illegal parking early warning grade, and sending an illegal parking prompt to the mobile terminal.
When the road section to be evaluated has at least one intersection, the intersection can adopt an intersection phase sequence passing benefit evaluation method to evaluate the intersection phase sequence passing benefit of the intersection. Referring to fig. 3, the method for evaluating the phase sequence traffic efficiency of the intersection of the present embodiment mainly includes three steps:
s1, calculating the crossing traffic benefit;
s2, calculating an intersection passing benefit early warning coefficient according to the intersection passing benefit;
and S3, carrying out crossing passing benefit early warning according to the crossing passing benefit early warning coefficient.
In step S1, the calculation method of the intersection passage benefit adopts:
wherein, B represents the crossing passing benefit; i represents the current phase sequence number of the intersection, i is 0,1,2, … …, M; b isiAnd the total passing benefit of all vehicles at the road junction is shown when the current phase sequence number is i.
When the current phase sequence number is i, the total passing benefit B of all vehicles at the road junctioniThe calculation method comprises the following steps:
wherein G isiThe total number of the vehicles passing through the road junction when the current phase sequence number is i; n isiWhen the current phase sequence number is i, the vehicles currently passing through the road junction are obtained; b isn,iWhen the current phase sequence number is i, the current passing vehicle n at the road junctioniThe vehicle passing benefit.
When the current phase sequence number is i, the current passing vehicle n at the road junctioniVehicle passing benefit Bn,iThe calculation method comprises the following steps:
Bn,i＝E0/Ei；
wherein E is0For vehicles following a clear road, i.e. average speed V0Normal running LizTo LitEnergy consumption of the passage, L, produced by the timeizIs the crossing zebra crossing position, LitIs the vehicle position at time t; eiFor the current passing vehicle n at the intersection under the current phase sequence number iiL ofizTo LitThe passing energy consumption generated by the time.
E0And EiThe calculation method of the traffic energy consumption is the same as that of the traffic energy consumption, and comprises the following steps:
Ei＝Eiw+Eip
wherein E isiIndicating energy consumption of traffic, EiwRepresenting idle energy consumption of the vehicle, EipRepresenting the energy consumption of the vehicle.
Idling energy consumption EiwAccording to vehicle waiting time TiwTo calculate:
Eiw＝Tiw×Piw
wherein, PiwCalculating or actually measuring the idle speed power of the vehicle according to vehicle performance parameters;
Tiwthe waiting time of the vehicle from the zero vehicle speed to the non-zero vehicle speed is obtained.
Vehicle waiting time TiwThe calculation method comprises the following steps:
assuming that the interval time of n1 images obtained by taking a vehicle at the intersection is Δ t, the vehicle positions in n1 images are Pi,t-n1△t、……、Pi,t-2△t、Pi,t-△t、Pi,tCalculating the position L of the vehicle at time tit：
Lit＝ρ(Pi,t-n1△t+……+Pi,t-2△t+Pi,t-△t+Pi,t)/n1
Where ρ represents a conversion coefficient of the vehicle image position to the vehicle actual position;
calculating the vehicle running speed V at the time t by using the position difference between the front and rear times of the vehicleit：
Vit＝(Lit-Li(t-△t))/△t
If VitLess than one settingIf the minimum value epsilon is smaller than the preset minimum value epsilon, the speed of the vehicle is considered to be zero at the moment t, otherwise, the speed is not zero;
when V isitWhen not zero, the waiting time T of the vehicle isiwThe real time when the vehicle speed is zero is subtracted from the time when the vehicle speed is not zero.
Energy consumption for driving EipAccording to the vehicle passing time TipTo calculate:
Eip＝Tip×Pip；
wherein, PipIs the passing power of the vehicle;
Tipfor crossing vehicle driving L under the current phase sequence number iizTo LitTime of (d).
Passing power PipThe calculation method comprises the following steps:
Pip＝(W×f+CDAVip 2)×Vip/η；
wherein W is the weight of the vehicle, f is the rolling friction coefficient of the vehicle tire, CDIs the wind resistance coefficient of the vehicle, A is the frontal area of the vehicle, eta is the mechanical conversion efficiency of the vehicle, Vip＝(Lz-Lit)/Tip。
Passage time TipThe calculation method comprises the following steps:
when the speed of the vehicle is zero at the time t and the speed is not zero at the time (t plus delta t), calculating the position of the vehicle from the photographic picture, and when the vehicle passes through the zebra crossing line position LzTime, record vehicle i passing time tip；
Tip＝tip-t。
In step S2, the traffic benefit early warning coefficient RN,KThe calculation method comprises the following steps:
s21, calculating the absolute value of the difference between the total passing benefit of all vehicles at the intersection and the passing benefit of the intersection under different phase sequence numbers:
ΔBi＝|Bi-B|
wherein, Delta BiRepresents the total passing benefit B of all vehicles at the road junction when the phase sequence number is iiBenefit of crossing traffic BA difference;
s22, acquiring a maximum absolute value Delta B: Δ B { [ max { [ Δ ] B { [ means ]i，i＝0，1，2，……，M}，
S23, finding the phase sequence number corresponding to the maximum absolute value and recording as the phase sequence number K;
s24, calculating crossing traffic benefit early warning coefficient r of phase sequence number KK：
S25, if the phase sequence numbers K corresponding to the maximum absolute values found in N continuous periods are the same, using N crossing traffic benefit early warning coefficients rKAverage is carried out to obtain an average crossing traffic benefit early warning coefficient RN,K：
Wherein R isN,KRepresenting the average crossing traffic benefit early warning coefficient of continuous N periods and phase sequence number K;
rN,Kthe early warning coefficient of the crossing traffic benefit of the current period N and the phase sequence number K;
rN-1,Kthe early warning coefficient of the crossing traffic benefit of the previous cycle N-1 and the phase sequence number K;
r1,Kand the crossing traffic benefit early warning coefficient is the 1 st period of the N periods and the phase sequence number K.
In step S3, the crossing traffic benefit early warning specifically includes:
according to the crossing traffic efficiency early warning coefficient RN,KAnd comparing the traffic efficiency with the phase traffic efficiency early warning coefficients of different traffic saturation to obtain corresponding early warning levels:
when R isN,K≤RLJudging that the phase sequence numbers of M +1 phase sequences of the current period N are reasonably sorted;
when R isL＜RN,K≤RMThen, the phase sequence of M +1 phase sequences of the current period N is determinedThe number ordering needs to be vigilant, and the attention to the phase sequence number K is prompted;
when R isN,K＞RHJudging that the phase sequence numbers of the M +1 phase sequences in the current period N are not reasonably sorted, and prompting to adjust the phase sequence number K;
wherein R isLLower limit value of early warning coefficient for crossing traffic efficiency, RMA limit value, R, is provided for the early warning coefficient of the crossing traffic benefitHAnd the upper limit value of the efficiency early warning coefficient is the crossing traffic efficiency.
Example 2
When the method for evaluating the temporary stop of the road section is implemented, the method can be implemented by adopting a device for evaluating the temporary stop of the road section. As shown in fig. 4, the temporary stopping evaluation device for a road section includes at least one moving end and at least one fixed end.
One mobile terminal is installed in one vehicle and used for providing the position of the corresponding vehicle and vehicle running license information. The mobile terminal comprises a positioning unit and a wireless communication part. The positioning unit provides the position of the corresponding vehicle and vehicle license information.
And the fixed end is arranged in the road section to be evaluated and is used for acquiring and storing the positions of the corresponding vehicles and the vehicle driving license information sent by all the mobile ends in the road section to be evaluated in real time. The fixed end includes most of the data processing and wireless traffic. The wireless communication part of the fixed end and the wireless communication part of the mobile end realize wireless communication to achieve information communication.
The data processing part comprises an illegal parking vehicle judging device, an influence coefficient evaluating device and an illegal parking early warning grade setting device. The illegal parking vehicle judgment device is used for judging illegal parking vehicles on the road section to be evaluated, and the first step of the road section temporary parking evaluation method is realized. And the influence coefficient evaluation device is used for evaluating the influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle, so that the second step of the temporary parking evaluation method for the road section is realized. And the illegal parking early warning grade setting device compares the illegal parking influence coefficient with illegal parking influence coefficients of different traffic saturations to obtain a corresponding illegal parking early warning grade, and sends a corresponding illegal parking prompt to realize the third step of the temporary parking evaluation method for the road section.
The mobile end of the invention is fixedly arranged in a running vehicle and sends real-time information to the fixed end. The real-time information includes a location and a vehicle driving license. And the fixed end acquires the real-time information of the mobile end in the current road section, calculates to obtain the speed information of different running vehicles in the road section, further judges whether the vehicles violate, feeds back a processing result to the mobile end corresponding to the violating vehicle, and simultaneously sends the processing result to the traffic command center. The method judges whether the illegal parking exists or not through the real-time speed of the vehicle, further calculates the influence coefficient of the illegal parking of the vehicle on the road traffic, and provides a basis for the evaluation of the illegal parking of the vehicle and the design of the temporary parking of the road. The method can effectively prompt the vehicle to stop illegally, reduce the influence of temporary stop on road traffic and make up the blank of the prior art.
When the intersection phase sequence traffic benefit evaluation method is implemented, an intersection phase sequence traffic benefit evaluation device can be adopted, and as shown in fig. 5, the intersection phase sequence traffic benefit evaluation device can comprise a control unit, a wireless communication module, a storage unit, a logic comprehensive unit and an early warning prompt module. The control unit realizes evaluation algorithm and interacts data with each unit, the wireless communication module realizes the communication function between the device and the traffic command center, the storage unit stores historical traffic benefit data of the intersection, the logic comprehensive unit realizes calculation of the traffic benefit of the intersection, and the early warning module realizes early warning and prompting of the traffic benefit. According to the invention, the vehicle passing efficiency and the passing energy consumption are integrated, the vehicle passing benefit is calculated, the intersection phase sequence evaluation criterion is given, and a basis is provided for intersection phase sequence design and evaluation. The method can improve the phase sequence passing benefit of the intersection, saves the passing time, reduces the energy consumption and fills the blank of the prior art.
The control unit can comprise an intersection passing benefit calculating unit, an intersection passing benefit early warning coefficient calculating unit and an intersection passing benefit early warning unit. The control unit realizes a corresponding intersection phase sequence traffic benefit evaluation method, such as: the intersection passing benefit calculating unit is used for calculating the intersection passing benefit; crossing efficiencyThe benefit early warning coefficient calculating unit is used for calculating an intersection passing benefit early warning coefficient according to the intersection passing benefit; the crossing traffic benefit early warning unit is used for early warning the coefficient R according to the crossing traffic benefitN,KAnd comparing the traffic efficiency with the phase traffic efficiency early warning coefficients of different traffic saturation degrees to obtain corresponding early warning levels.
Referring to fig. 6, when the intersection phase sequence traffic benefit evaluation device is implemented in a specific manner, the following specific manner may be adopted.
Firstly, the camera unit acquires the vehicle information of the current phase sequence lane, calculates the waiting time and the passing time of the current phase sequence vehicle, and further calculates the energy consumption and the passing benefit of the vehicle passing. And then sequentially calculating the vehicle passing benefits of the other phase sequences in the current period. And then calculating the crossing traffic benefit and traffic benefit early warning coefficient. And finally, comparing the traffic benefit early warning coefficient with phase traffic benefit early warning coefficients at different traffic saturation degrees, and sending early warning information in real time.
The method comprises the following specific steps:
suppose that the intersection traffic phase sequence (phasesequence) has M +1 phase sequences, and is recorded as S0S1S2…SM. Currently period N, from phase sequence S0And sequentially calculating the traffic benefits.
(1) Phase sequence S0Vehicle i waiting time Tiw：(waiting time)
Assuming that the interval time between two images of the camera unit is delta t and the position of the vehicle is P, the interval time between the images is small, so that three continuous images can be selected to calculate the position L of the same vehicle i at the current time tit。
Lit＝ρ(Pi(t-2Δt)+Pi(t-Δt)+Pit) And/3 remarks: pitThe position of the vehicle in the picture at the time t is shown, and ρ shows a conversion coefficient (which can be obtained by calibration or calculation of camera parameters) for converting the picture position to an actual position.
Calculating the vehicle running speed V at the time t by using the position difference between the front and rear times of the vehicleit：
Vit＝(Lit-Li(t-Δt))/Δt
If VitIf the speed is less than a certain set minimum value epsilon, the speed of the vehicle is considered to be zero at the time t, namely the vehicle stops waiting.
When the speed of the vehicle is zero at time t and is not zero at time t', the waiting time of the vehicle i is:
Tiw＝t’-t
(2) phase sequence S0Vehicle passage time Tip：(passing time)
When the speed of the vehicle is zero at the moment t and the speed is not zero at the moment (t plus delta t), calculating the position of the vehicle from the photographic picture, and when the vehicle passes through the position L of the zebra crossing at the intersectionzTime, record vehicle passing time tipThen the vehicle passing time TipComprises the following steps:
Tip＝tip-t；
the average passing speed can be calculated according to the passing distance of the vehicle:
Vip＝(Lz-Lit)/Tip
(3) phase sequence S0Energy consumption E for vehicle i passingi(energy consumption)
The energy consumption of the vehicle i can be divided into two parts, namely idle speed energy consumption EiwAnd energy consumption for driving Eip：
Ei＝Eiw+Eip
Idling energy consumption EiwThe following may be calculated from the vehicle waiting time:
Eiw＝Tiw×Piw；Piwthe idle power of the vehicle can be calculated or actually measured according to vehicle performance parameters.
Energy consumption for driving EipThe following can be calculated from the vehicle transit time and speed:
Eip＝Tip×Pip；
wherein, PipIs the vehicle passing power.
Pip＝(W×f+CDAVip 2)×Vip/η；
Wherein W is the weight of the vehicle, f is the rolling friction coefficient, CDIs the wind resistance coefficient, A is the windward area, and η is the mechanical conversion efficiency. Under the condition that the road condition, the environment and the vehicle parameters are not changed, the parameters can be regarded as constants.
(4) Phase sequence S0Benefit of vehicle passing Bi(trafficbenefit)
Assuming that the vehicle is following the average speed V when the road is clear0Normal running (L)z-Lit) The energy consumption produced is E0Then the vehicle passing benefit B at the intersection is obtainediComprises the following steps:
Bi＝E0/Ei
then calculating the phase sequence S0And accumulating and averaging the passing benefits of each vehicle to obtain a phase sequence S0Benefit of crossing vehicle passing B0：
(5) Sequentially calculating vehicle passing benefits B of other phase sequences0，B1，B2，…,BM。
(6) Calculating the crossing passing benefit B:
(7) calculating traffic efficiency
Calculating the difference between the different phase sequence passing benefits and the intersection passing benefits
ΔBi＝|Bi-B|
Obtaining the maximum passing benefit difference Delta BK＝max{ΔBiI is 0,1,2, …, M, and k denotes the maximum benefit difference Δ BKThe corresponding phase sequence number.
Calculating crossing traffic benefit early warning coefficient rK：(ratio)
If the intersection traffic benefit early warning coefficient r is obtained by calculation in three continuous periodsKIf the corresponding phase sequence numbers are the same, averaging the crossing traffic benefit early warning coefficients of three periods to obtain a period N crossing traffic benefit early warning coefficient RN,K。
(8) Crossing traffic benefit early warning
Phase vehicle passing benefit coefficients of roads with different traffic saturations can be respectively obtained according to software simulation or actual measurement of intersections, and the passing benefit coefficient with lower (10%) road traffic saturation is assumed to be RLThe traffic efficiency coefficient is R when the road traffic saturation is medium (40 percent)MThe traffic benefit coefficient is R when the road traffic saturation is higher (85 percent)H。
According to the calculated crossing traffic benefit early warning coefficient RKAnd comparing the traffic efficiency with the phase traffic efficiency early warning coefficients of different traffic saturation degrees to obtain corresponding early warning grades:
①RN,K<＝RLif the periodic N phase sequence runs reasonably, the normal is prompted
②RL<RN,K<＝RMIf the phase sequence in the period N is normal, the attention to the phase sequence number K is prompted
③RN,K>RHIf the phase sequence in the period N runs unreasonably, the adjustment of the phase sequence number K is prompted.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A road section temporary parking evaluation method is characterized by comprising the following steps:
firstly, judging illegal vehicles on a road section to be evaluated;
secondly, evaluating an influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle;
firstly, determining a violation influence road section: the current illegal parking vehicle and a road section before the illegal parking vehicle with the nearest distance from the rear side are illegal parking influence road sections;
secondly, calculating an illegal parking influence coefficient r of the current illegal parking vehicle;
where n3 represents the total number of vehicles in the parking violation influence road section where the current parking violation vehicle is located, ndRepresenting the total number of the decelerated vehicles in the current illegal parking vehicle illegal parking influence road section, ncIndicates the total number of vehicles with changed lanes in the current illegal parking vehicle illegal parking influence road section, wdAnd wcWeighting factors representing a decelerating vehicle and a lane-changing vehicle, respectively;
comparing the violation influence coefficient r with violation influence coefficients of different traffic saturations to obtain corresponding violation early warning levels, and sending corresponding violation prompts:
①r＜＝RLsending illegal parking-less influence-driving away as soon as possible;
②RL＜r＜＝RMthen, the illegal parking is sent-the influence is larger-the vehicle leaves as soon as possible;
③RM＜r＜＝RHthen, the illegal parking is sent-the influence is great-the vehicle is driven away as soon as possible;
④RHif r is less than r, illegal parking is sent, the influence is serious, and the vehicle leaves as soon as possible;
wherein, road traffic saturation sets gradually from low to high: rLIs the influence coefficient of the violation of parking, R, when the road traffic saturation is lowMIs the influence coefficient of the violation of the stationary in the road traffic saturation, RHThe influence coefficient of the illegal parking when the road traffic saturation is higher is RH。
2. The road section temporary stopping evaluation method according to claim 1, further comprising the steps of:
and fourthly, judging again at certain intervals, and if the same vehicle is continuously and repeatedly violated, sending violation information to a traffic command center for reporting.
3. The section temporary parking evaluation method according to claim 2, characterized by further comprising the steps of:
fifthly, the road temporary stopping basis is as follows: and calculating the temporary stopping influence coefficient of the road section to be evaluated in different time periods and traffic flow, and if the temporary stopping influence coefficient is smaller than a temporary stopping preset value, taking the temporary stopping influence coefficient as a reference basis for defining the corresponding temporary stopping time period of the temporary parking space.
4. The road section temporary parking evaluation method according to claim 1, wherein the determination method of vehicle violation comprises the steps of:
(1) calculating an average vehicle speed of a vehicle
Sequencing all vehicle positions on each lane number on the road section to be evaluated according to the driving direction on the current lane number;
and when the time t1 is obtained, recording the positions of all vehicles on the road section to be evaluated as SN1 m，t1: when the representation time t1 is reached, the road section to be evaluated is positioned on the lane number NVehicle position S of vehicle number m on 1N1 m，t1；
And when the time t1 is calculated, the vehicle speeds of all vehicles on the road section to be evaluated are as follows: from the front-to-back time interval Δ t1, the average vehicle speed of the vehicle is calculated and recorded as vN1 m，t1And when the representation time t1 is reached, the average vehicle speed v of the vehicle with the vehicle number m on the lane number N1 on the road section to be evaluatedN1 m，t1；vN1 m，t1＝(SN1 m，t1-SN1 m，(t1-Δt1))/Δt1；
If the average vehicle speed of the vehicle is less than a preset value epsilon 1 for n2 continuous times, judging that the corresponding vehicle stops;
(2) calculating the following distance of the vehicle
According to the vehicle with the nearest distance to the front, the following distance D is calculatedN1 m，t1: at the characterization time t1, the following distance D between the vehicle of the vehicle number m and the vehicle of the vehicle number m-1, which is the vehicle of the nearest vehicle distance aheadN1 m，t1；DN1 m，t1＝SN1 (m-1)，t1-SN1 m，t1；
According to a preset minimum driving speed VminCalculating the minimum following distance L of the vehicleminf：Lminf＝L0f+Ldf；L0fAs a reaction distance of the driver, L0f＝Vmin*T0，T0Brake reaction time for the driver; l isdfIs the minimum braking distance, L, of the vehicledf＝(Vmin)2/(2*dmax)，dmaxIs the maximum braking deceleration of the vehicle;
(3) determining whether a vehicle is parked illegally
And if the vehicle stops and the vehicle following distance is greater than the minimum vehicle following distance, judging that the corresponding vehicle violates the parking.
5. The road section temporary stopping evaluation method according to claim 1, wherein R is RLIs the influence coefficient of the violation when the road traffic saturation is 10 percent, RMIs the influence coefficient of the violation when the road traffic saturation is 40 percent, RHThe influence coefficient of the violation when the road traffic saturation is 85 percent is RH。
6. The road section temporary stopping evaluation method according to claim 1, wherein w isdAnd wcAre obtained by calibration through tests.
7. The road section temporary parking evaluation method according to claim 1, wherein the road section to be evaluated has at least one intersection, and the intersection adopts an intersection phase sequence traffic benefit evaluation method to evaluate the intersection phase sequence traffic benefit of the intersection;
assuming that each period of the intersection passing phase sequence has M +1 phase sequences; the intersection phase sequence traffic benefit evaluation method comprises the following steps:
s1, calculating the crossing passing benefit:
wherein, B represents the crossing passing benefit; i represents the current phase sequence number of the intersection, i is 0,1,2, … …, M; b isiRepresenting the total passing benefit of all vehicles at the road junction when the current phase sequence number is i;
s2, calculating an intersection passing benefit early warning coefficient R according to the intersection passing benefitN，KThe traffic benefit early warning coefficient RN，KThe calculation method comprises the following steps:
s21, calculating the absolute value of the difference between the total passing benefit of all vehicles at the intersection and the passing benefit of the intersection under different phase sequence numbers:
ΔBi＝|Bi-B|
wherein, Delta BiRepresents the total passing benefit B of all vehicles at the road junction when the phase sequence number is iiThe difference with the crossing passing benefit B;
s22, acquiring a maximum absolute value delta B: Δ B ═ max { Δ Bi，i＝0，1，2，……，M}，
S23, finding the phase sequence number corresponding to the maximum absolute value and recording as the phase sequence number K;
s24, calculating crossing traffic benefit early warning coefficient r of phase sequence number KK：
S25, if the phase sequence numbers K corresponding to the maximum absolute values found in N continuous periods are the same, using N crossing traffic benefit early warning coefficients rKAverage is carried out to obtain an average crossing traffic benefit early warning coefficient RN，K：
Wherein R isN，KRepresenting the average crossing traffic benefit early warning coefficient of continuous N periods and phase sequence number K;
rN，Kthe early warning coefficient of the crossing traffic benefit of the current period N and the phase sequence number K;
rN-1，Kthe early warning coefficient of the crossing traffic benefit of the previous cycle N-1 and the phase sequence number K;
r1，Kthe crossing traffic benefit early warning coefficient is the first period of the N periods and the phase sequence number K;
s3, carrying out crossing passing benefit early warning according to the crossing passing benefit early warning coefficient;
according to the crossing traffic efficiency early warning coefficient RN，KAnd comparing the traffic efficiency with the phase traffic efficiency early warning coefficients of different traffic saturation degrees to obtain corresponding early warning grades:
when R isN，K≤RLThen, judging that the phase sequence numbers of M +1 phase sequences of the current period N are reasonably sorted;
when R isL＜RN，K≤RMThen, judging that the phase sequence number ordering of M +1 phase sequences in the current period N needs to be vigilant, and prompting to pay attention to the phase sequence number K;
when R isN，K＞RHJudging that the phase sequence numbers of the M +1 phase sequences in the current period N are not reasonably sorted, and prompting to adjust the phase sequence number K;
wherein R isLLower limit value of early warning coefficient for crossing traffic efficiency, RMFor the early warning coefficient of crossing traffic efficiency, prompting limit value, RHAnd the upper limit value of the efficiency early warning coefficient is the crossing traffic efficiency.
8. The method for evaluating temporary stopping of road section according to claim 7, wherein the total passing benefit B of all vehicles at the intersection when the current phase sequence number is iiThe calculating method comprises the following steps:
wherein G isiThe total number of the vehicles passing through the road junction when the current phase sequence number is i; n isiWhen the current phase sequence number is i, the vehicles currently passing through the road junction are obtained; b isn，iWhen the current phase sequence number is i, the current passing vehicle n at the road junctioniThe vehicle passing benefit.
9. The method for evaluating temporary stopping of road section according to claim 8, wherein when the current phase sequence number is i, the vehicle n currently passing through the road junction isiVehicle passing benefit Bn，iThe calculation method comprises the following steps:
Bn，i＝E0/Ei；
wherein E is0For vehicles following a clear road, i.e. average speed V0Normal running LizTo LitEnergy consumption of the passage, L, produced by the timeizIs the crossing zebra crossing position, LitIs the vehicle position at time t; eiFor a vehicle n currently passing at the intersection under the current phase sequence number iiL ofizTo LitThe traffic energy generated by the time is consumed.
10. A road section temporary stop evaluation device that employs the road section temporary stop evaluation method according to any one of claims 1 to 9, characterized by comprising:
the mobile terminal is arranged in a vehicle and used for providing the position of the corresponding vehicle and vehicle license information;
the fixed end is arranged in the road section to be evaluated and used for acquiring and storing the positions of corresponding vehicles and vehicle driving license information sent by all the mobile ends in the road section to be evaluated in real time;
the fixed end comprises an illegal parking vehicle judgment device, an influence coefficient evaluation device and an illegal parking early warning grade setting device;
the illegal parking vehicle judgment device is used for judging illegal parking vehicles on the road section to be evaluated;
the influence coefficient evaluation device is used for evaluating the influence coefficient caused by the corresponding illegal parking vehicle according to the illegal parking vehicle;
the illegal parking early warning grade setting device compares the illegal parking influence coefficient with illegal parking influence coefficients of different traffic saturations to obtain a corresponding illegal parking early warning grade, and sends a corresponding illegal parking prompt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111190838.8A CN113838286B (en) | 2021-10-13 | 2021-10-13 | Road section temporary parking evaluation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111190838.8A CN113838286B (en) | 2021-10-13 | 2021-10-13 | Road section temporary parking evaluation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113838286A CN113838286A (en) | 2021-12-24 |
| CN113838286B true CN113838286B (en) | 2022-07-01 |
Family
ID=78968609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111190838.8A Active CN113838286B (en) | 2021-10-13 | 2021-10-13 | Road section temporary parking evaluation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113838286B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114519941B (en) * | 2022-03-01 | 2024-04-05 | 超级视线科技有限公司 | Time-limited parking management method and device based on high-order video |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002082400A2 (en) * | 2001-04-04 | 2002-10-17 | Persio Walter Bortolotto | A system and a method for event detection and storage |
| CN102360527A (en) * | 2011-10-17 | 2012-02-22 | 天津市市政工程设计研究院 | Evaluation method relating to standard of service at crossings |
| CN102592441A (en) * | 2012-02-22 | 2012-07-18 | 天津港(集团)有限公司 | Special road safety evaluation method for trucks on basis of traffic conflict technology |
| CN104574970A (en) * | 2015-01-26 | 2015-04-29 | 中国人民解放军理工大学 | Method for evaluating traffic state in connection position of entrances and exits of urban underground parking lot system |
| CN112071104A (en) * | 2020-09-18 | 2020-12-11 | 清华大学 | Multi-signal lamp intersection vehicle passing auxiliary optimization method considering driving style |
| CN112349094A (en) * | 2020-09-27 | 2021-02-09 | 北京博研智通科技有限公司 | Method and system for evaluating motor vehicle passing efficiency of signal lamp-free control intersection |
| JP2021125142A (en) * | 2020-02-07 | 2021-08-30 | パイオニア株式会社 | Safe driving degree evaluation device, safe driving degree evaluation method, safe driving degree evaluation program, and storage medium |
-
2021
- 2021-10-13 CN CN202111190838.8A patent/CN113838286B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002082400A2 (en) * | 2001-04-04 | 2002-10-17 | Persio Walter Bortolotto | A system and a method for event detection and storage |
| CN102360527A (en) * | 2011-10-17 | 2012-02-22 | 天津市市政工程设计研究院 | Evaluation method relating to standard of service at crossings |
| CN102592441A (en) * | 2012-02-22 | 2012-07-18 | 天津港(集团)有限公司 | Special road safety evaluation method for trucks on basis of traffic conflict technology |
| CN104574970A (en) * | 2015-01-26 | 2015-04-29 | 中国人民解放军理工大学 | Method for evaluating traffic state in connection position of entrances and exits of urban underground parking lot system |
| JP2021125142A (en) * | 2020-02-07 | 2021-08-30 | パイオニア株式会社 | Safe driving degree evaluation device, safe driving degree evaluation method, safe driving degree evaluation program, and storage medium |
| CN112071104A (en) * | 2020-09-18 | 2020-12-11 | 清华大学 | Multi-signal lamp intersection vehicle passing auxiliary optimization method considering driving style |
| CN112349094A (en) * | 2020-09-27 | 2021-02-09 | 北京博研智通科技有限公司 | Method and system for evaluating motor vehicle passing efficiency of signal lamp-free control intersection |
Non-Patent Citations (2)
| Title |
|---|
| 怠速起停对汽油车油耗及颗粒数量排放的影响;胡志远 等;《中国环境科学》;20200320(第3期);全文 * |
| 路内停车车辆比例系数对交通流的影响研究;韦兰香等;《交通科技与经济》;20151025(第05期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113838286A (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109003444B (en) | Urban intersection overflow control method based on wide area radar microwave detector | |
| Cao et al. | The effect of curb parking on road capacity and traffic safety | |
| CN102542831A (en) | Variable speed-limit control method of expressway based on real-time traffic flow and weather information | |
| CN113838286B (en) | Road section temporary parking evaluation method and device | |
| CN102819954A (en) | Traffic region dynamic map monitoring and predicating system | |
| CN113257024B (en) | V2I-based rear-end collision prevention early warning method and system for expressway rain and fog environment | |
| CN111145544B (en) | Travel time and route prediction method based on congestion spreading dissipation model | |
| CN102542823A (en) | Expressway variable speed limit control method on basis of operation state of traffic flow | |
| CN112562318B (en) | Speed cooperative control method for severe weather frequent expressway speed limit area | |
| CN108109403A (en) | Adaptive traffic lights control system and method based on wagon flow | |
| CN116206440A (en) | Intelligent high-speed traffic flow acquisition, prediction, control and informatization pushing system and method | |
| CN103606268A (en) | Variable speed-limit control method of congested upper streams of snowy expressway | |
| CN103093635A (en) | Expressway crest vertical curve road segment variable velocity-limiting control method | |
| CN111932899A (en) | Traffic emergency control method and device based on traffic simulation | |
| CN114724395B (en) | Tramcar level crossing digital traffic dynamic adjustment control system and method | |
| CN113129610A (en) | Unfavorable weather expressway self-adaptive variable speed limit and information cooperative control system | |
| CN113850998B (en) | Intersection phase sequence traffic benefit evaluation method and traffic evaluation method | |
| Lin et al. | Variations in queue discharge patterns and their implications in analysis of signalized intersections | |
| Taale et al. | Ten years of ramp-metering in The Netherlands | |
| CN113192344A (en) | Traffic light control method, system and storage medium | |
| CN115662145B (en) | Emergency shunting method for vehicles on accident road section based on big data | |
| CN115294797B (en) | Intelligent safety control method for road level crossing | |
| Middelham et al. | Ramp metering in the Netherlands: an overview | |
| CN112053570B (en) | Urban traffic road network running state monitoring and evaluating method and system | |
| CN113838297B (en) | Ambulance priority passing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |