CN108877245A - A kind of dynamic wisdom relief control system - Google Patents
A kind of dynamic wisdom relief control system Download PDFInfo
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- CN108877245A CN108877245A CN201810799863.8A CN201810799863A CN108877245A CN 108877245 A CN108877245 A CN 108877245A CN 201810799863 A CN201810799863 A CN 201810799863A CN 108877245 A CN108877245 A CN 108877245A
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
Abstract
In order to improve the efficiency controlled or regulated that the control of traffic lights blocks road network,The present invention provides a kind of dynamic wisdom to succour control system,Including traffic signals dynamic adjustment unit,Cloud control unit,And it is set to driving status monitoring unit and GPS navigation unit on the first ambulance,The cloud control unit determines whether that it is necessary to the patient in the first ambulance is transplanted on the second ambulance according to the driving status monitoring unit,Second ambulance for determining and immediate second ambulance of the first ambulance position and is navigate to the first ambulance by the GPS navigation unit,The traffic signals dynamic adjustment unit is used to be adjusted the control signal of the traffic lights in the section where the first ambulance or the second ambulance for transporting the patient,Adjustment result is saved in the cloud control unit.Through a large number of experiments, the cost time during ambulance rescue on traffic is current averagely reduces 37%.
Description
Technical field
The present invention relates to road network chocking-up degree control fields, succour control system more particularly, to a kind of dynamic wisdom.
Background technique
Modern society has usual preferred example for processing emergency.For example, people pull out phone into 119 phones
The heart, and therefore cause appropriate medical treatment and come to assist with team of ensuring safety.This process is highly developed, but sometimes life and
Property is still seriously damaged or even since emergency relief vehicle is (for example, ambulance, fire fighting truck (fire truck), police
Vehicle (police car), etc.) delayed in traffic and cause damages.And it is known that emergency relief vehicle is caused to postpone
Reason-bad luck traffic condition.So emergency relief vehicle all needs to assist quickly through crowded whenever emergency occurs
Traffic, and quickly reach the destination.
However, urban transportation blocking is to influence the major issue of China's economic development and quality of residents'life.Implement traffic
Signal control strategy is to reduce delay；Publication Real-time Traffic Information is keeping road network dynamic equalization and alleviation to induce vehicle driving
The traffic management measure of traffic jam.Both traffic management measures are with traffic behavior, especially to traffic jam degree
Premised on effective evaluation.
Application No. is the Chinese invention patent applications of CN200810198919.0 to disclose a kind of city based on data characteristics
City's signal controlled junctions traffic condition detection and evaluation method.The data configuration that it uses data transmission unit to transmit is with traffic
Variable density and have stablize minimum vehicle when away from as saturation traffic flow character parameter.However, this method has ignored
The difference of the subjective delay length of driver in vehicle shutdown process, this difference so that when vehicle away from stabilization minimum value be inaccurate
It is true to be even not present, seriously affect the validity of the control duration of traffic lights.This influence greatly influences
Conevying efficiency in ambulance relief patient procedure.
Summary of the invention
The time on traffic network is spent in shorten ambulance during operation, the present invention provides a kind of dynamic intelligence
Intelligent relief control system, including traffic signals dynamic adjustment unit, cloud control unit, and be set on the first ambulance
Driving status monitoring unit and GPS navigation unit, the cloud control unit are according to the driving status monitoring unit determination
It is no it is necessary to which the patient in the first ambulance is transplanted on the second ambulance, the GPS navigation unit is rescued for determination with first
It protects the position of immediate second ambulance of vehicle and the second ambulance is navigate into the first ambulance, the traffic signals dynamic is adjusted
Whole unit is used for the control of the traffic lights to the section where the first ambulance or the second ambulance for transporting the patient
Signal is adjusted, and adjustment result is saved in the cloud control unit.
Further, the traffic signals dynamic adjustment unit includes：
Section traffic information obtains subelement, for section where monitoring the first ambulance in ambulance described in road network
Interior number of vehicles, the section front and back respectively includes a crossing；
Command and control subelement, for issuing the first prompt information and basis to the first ambulance according to the number of vehicles
Congestion level issues the second prompt information to traffic control department to assist the signal lamp that will arrive at crossing described in traffic control department control.
Further, the section traffic information acquisition subelement includes：
Number of vehicles acquisition submodule will arrive at the vehicle at crossing for obtaining for the 1 to the n-th moment from a upper crossing
Number set { Num (n) }；
First prompt information generates subelement, for generating first prompt information according to number of vehicles.
Further, the command and control subelement includes：
Amendment and prediction subelement, are used to be modified set { Num (n) }, predicted for the (n+1)th moment from a upper crossing
The number of vehicles set { Num (n+1) } at crossing will be arrived at, and will be calculated within a Signalized control period according to prediction result
Red, green light lighting time length ratio；
Subelement is corrected, for being corrected to the ratio；
Second prompt information generation unit, for being blocked up to the second of a upper crossing and the road network that will be arrived between crossing
Plug degree is estimated and generates the second prompt information.
Further, the number of vehicles acquisition submodule includes photoelectric sensor, for detecting between two crossings
Number of vehicles at some position.
Further, the number of vehicles at some position between two crossings of the detection is including the use of camera and base
It obtains uni-directionally in Car license recognition mode by the number of the vehicle at the position.
Further, the amendment and prediction subelement include amendment and prediction model generation module, are used for：
If being repaired to the 1 to the n-th moment from the number of vehicles set { Num (n) } that a upper crossing will arrive at crossing
The the 1 to the n-th moment just obtained afterwards will arrive at the number of vehicles at crossing for { Num ' (n) }, wherein { Num from a upper crossing
(n) } meet the probability distribution rule of Poisson distribution, wherein n be natural number and n=1,2 ...；
By the joint probability density function C (Num (n), Num ' (n)) of { Num (n) } and { Num ' (n) } be denoted as C (Num,
Num '),
C (Num, Num ') and=Pois (α T1 λ, α T2 λ ..., α Tn λ)=λ [- Pois (N) (λ)+α T1Pois (N-1) (λ)
+ ...+α TNPois (λ)],
Wherein Pois (λ)=e-N λ；N indicates the number of vehicles of the n-th moment Tn；
λ=[n, Num ' (n)] T, [] T indicate that λ is random vector, is handed in short-term according to SVR to [] progress transposition herein
The through-flow modulus value in the sum of the single order item of { Num ' (n) } at the n-th moment this set for predicting to obtain；
{ Num (n) } is modified：
The probability density of { Num ' (n) } under the conditions of { Num (n) } is set again：
P (Num ' | Num)=p (Num ', Num)/p (Num)=Pois (Num ', λ Num ' | Num), wherein
Pois (Num ', λ Num ' | Num) be that mean value is equal to λ Num ' | Num, variance matrix M are
Poisson function, CA, B indicate A and B between cross covariance,
Then
Further, the correction subelement includes：
Ratio obtains module, red, green light lighting time length the ratio of the signal lamp for obtaining the crossing that will be arrived at
Value R [n]；
First chocking-up degree obtains module, for obtaining vehicle at a upper crossing between the crossing that will be arrived at
Section the first chocking-up degree Dcrowd；
Time scale modification module, for being modified to the signal period duration T [n+1] that will arrive at crossing：
WhereinExpression takes integer, Num'[n] indicate that the n-th moment revised will arrive at from a upper crossing
The number of vehicles at crossing, Num'[n+1] indicate the number of vehicles that will arrive at crossing from a upper crossing to the (n+1)th moment
Predict number, BrpreIndicate the turnout number at a crossing, BrnowIndicate that the turnout number at the crossing that will be arrived at, i and j are positive whole
Number.
Further, the second prompt information generation unit includes：
Road network chocking-up degree submodule determines one for the value according to T [n+1] compared with preset threshold set
Crossing and the second road network chocking-up degree between crossing will be arrived at, using the second road network chocking-up degree as the second prompt information.
Beneficial effects of the present invention are：It can be carried out dynamically according to the number of vehicles in the section on road network between traffic lights
Red, green light lighting time length adjustment, and above-mentioned modified warp has been determined according to a large number of experiments of applicant for number of vehicles
Formula is tested, thus by adjusting the ratio of traffic light time length, when so that causing traffic lights to convert due to driver's subjective reason
The chocking-up degree caused by early, evening that starts to walk can be reduced automatically as much as possible.Through a large number of experiments, handed over during ambulance rescue
The cost time on going all averagely reduces 37%.
Detailed description of the invention
Fig. 1 shows the composition block diagram of dynamic wisdom relief control system of the invention.
Specific embodiment
As shown in Figure 1, preferred embodiment in accordance with the present invention, the present invention provides a kind of dynamic wisdom to succour control system
System, including traffic signals dynamic adjustment unit, cloud control unit, and the driving status monitoring being set on the first ambulance
Unit and GPS navigation unit, the cloud control unit determine whether that it is necessary to by according to the driving status monitoring unit
Patient in one ambulance is transplanted on the second ambulance, and the GPS navigation unit is immediate with the first ambulance for determination
Second ambulance is simultaneously navigate to the first ambulance by the position of the second ambulance, the traffic signals dynamic adjustment unit for pair
The control signal for transporting the first ambulance of the patient or the traffic lights in the section where the second ambulance is adjusted,
Adjustment result is saved in the cloud control unit.
Preferably, the traffic signals dynamic adjustment unit includes：
Section traffic information obtains subelement, for section where monitoring the first ambulance in ambulance described in road network
Interior number of vehicles, the section front and back respectively includes a crossing；
Command and control subelement, for issuing the first prompt information and basis to the first ambulance according to the number of vehicles
Congestion level issues the second prompt information to traffic control department to assist the signal lamp that will arrive at crossing described in traffic control department control.
Preferably, the section traffic information acquisition subelement includes：
Number of vehicles acquisition submodule will arrive at the vehicle at crossing for obtaining for the 1 to the n-th moment from a upper crossing
Number set { Num (n) }；
First prompt information generates subelement, for generating first prompt information according to number of vehicles.
Preferably, the command and control subelement includes：
Amendment and prediction subelement, are used to be modified set { Num (n) }, predicted for the (n+1)th moment from a upper crossing
The number of vehicles set { Num (n+1) } at crossing will be arrived at, and will be calculated within a Signalized control period according to prediction result
Red, green light lighting time length ratio；
Subelement is corrected, for being corrected to the ratio；
Second prompt information generation unit, for being blocked up to the second of a upper crossing and the road network that will be arrived between crossing
Plug degree is estimated and generates the second prompt information.
Preferably, the number of vehicles acquisition submodule includes photoelectric sensor, for detecting certain between two crossings
Number of vehicles at a position.
Preferably, the number of vehicles at some position between two crossings of the detection including the use of camera and is based on
Car license recognition mode obtains uni-directionally by the number of the vehicle at the position.
Preferably, the amendment and prediction subelement include amendment and prediction model generation module, are used for：
If being repaired to the 1 to the n-th moment from the number of vehicles set { Num (n) } that a upper crossing will arrive at crossing
The the 1 to the n-th moment just obtained afterwards will arrive at the number of vehicles at crossing for { Num ' (n) }, wherein { Num from a upper crossing
(n) } meet the probability distribution rule of Poisson distribution, wherein n be natural number and n=1,2 ...；
By the joint probability density function C (Num (n), Num ' (n)) of { Num (n) } and { Num ' (n) } be denoted as C (Num,
Num '),
C (Num, Num ') and=Pois (α T1 λ, α T2 λ ..., α Tn λ)=λ [- Pois (N) (λ)+α T1Pois (N-1) (λ)
+ ...+α TNPois (λ)],
Wherein Pois (λ)=e-N λ；N indicates the number of vehicles of the n-th moment Tn；
λ=[n, Num ' (n)] T, [] T indicate that λ is random vector, is handed in short-term according to SVR to [] progress transposition herein
The through-flow modulus value in the sum of the single order item of { Num ' (n) } at the n-th moment this set for predicting to obtain；
{ Num (n) } is modified：
The probability density of { Num ' (n) } under the conditions of { Num (n) } is set again：
P (Num ' | Num)=p (Num ', Num)/p (Num)=Pois (Num ', λ Num ' | Num), wherein
Pois (Num ', λ Num ' | Num) be that mean value is equal to λ Num ' | Num, variance matrix M are
Poisson function, CA, B indicate A and B between cross covariance,
Then
Preferably, the correction subelement includes：
Ratio obtains module, red, green light lighting time length the ratio of the signal lamp for obtaining the crossing that will be arrived at
Value R [n]；
First chocking-up degree obtains module, for obtaining vehicle at a upper crossing between the crossing that will be arrived at
Section the first chocking-up degree Dcrowd；
Time scale modification module, for being modified to the signal period duration T [n+1] that will arrive at crossing：
WhereinExpression takes integer, Num'[n] indicate that the n-th moment revised will arrive at from a upper crossing
The number of vehicles at crossing, Num'[n+1] indicate the number of vehicles that will arrive at crossing from a upper crossing to the (n+1)th moment
Predict number, BrpreIndicate the turnout number at a crossing, BrnowIndicate that the turnout number at the crossing that will be arrived at, i and j are positive whole
Number.
Preferably, the second prompt information generation unit includes：
Road network chocking-up degree submodule determines one for the value according to T [n+1] compared with preset threshold set
Crossing and the second road network chocking-up degree between crossing will be arrived at, using the second road network chocking-up degree as the second prompt information.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of dynamic wisdom succours control system, which is characterized in that single including traffic signals dynamic adjustment unit, cloud control
Member, and the driving status monitoring unit and GPS navigation unit that are set on the first ambulance, the cloud control unit according to
The driving status monitoring unit determines whether it is necessary to which the patient in the first ambulance is transplanted on the second ambulance, described
GPS navigation unit navigates to for the determining position with immediate second ambulance of the first ambulance and by the second ambulance
One ambulance, the traffic signals dynamic adjustment unit are used for the first ambulance or the second ambulance institute for transporting the patient
The control signal of traffic lights in section be adjusted, adjustment result is saved in the cloud control unit.
2. system according to claim 1, which is characterized in that the traffic signals dynamic adjustment unit includes：
Section traffic information obtains subelement, for vehicle in section where monitoring the first ambulance in ambulance described in road network
Number respectively includes a crossing before and after the section；
Command and control subelement, for issuing the first prompt information to the first ambulance according to the number of vehicles and according to congestion
Degree issues the second prompt information to traffic control department to assist the signal lamp that will arrive at crossing described in traffic control department control.
3. system according to claim 2, which is characterized in that the section traffic information obtains subelement and includes：
Number of vehicles acquisition submodule will arrive at the number of vehicles at crossing for obtaining for the 1 to the n-th moment from a upper crossing
Gather { Num (n) }；
First prompt information generates subelement, for generating first prompt information according to number of vehicles.
4. system according to claim 3, which is characterized in that the command and control subelement includes：
Amendment and prediction subelement, for being modified to set { Num (n) }, the (n+1)th moment of prediction will from a upper crossing
The number of vehicles set { Num (n+1) } at crossing is arrived at, and is calculated within a Signalized control period according to prediction result
Red, green light lighting time length ratio；Subelement is corrected, for being corrected to the ratio；
Second prompt information generation unit, for blocking journey to the second of a upper crossing and the road network that will be arrived between crossing
Degree is estimated and generates the second prompt information.
5. system according to claim 4, which is characterized in that the number of vehicles acquisition submodule includes photoelectric sensing
Device, for detecting the number of vehicles at some position between two crossings.
6. system according to claim 4, which is characterized in that the vehicle at some position between two crossings of the detection
Number is obtained uni-directionally including the use of camera and based on Car license recognition mode by the number of the vehicle at the position.
7. system according to claim 5 or 6, which is characterized in that the amendment and prediction subelement include amendment with it is pre-
Model generation module is surveyed, is used for：
If after being modified to the 1 to the n-th moment from the number of vehicles set { Num (n) } that a upper crossing will arrive at crossing
The the 1 to the n-th obtained moment will arrive at the number of vehicles at crossing for { Num ' (n) }, wherein { Num (n) } from a upper crossing
Meet the probability distribution rule of Poisson distribution, wherein n be natural number and n=1,2 ...；
The joint probability density function C (Num (n), Num ' (n)) of { Num (n) } and { Num ' (n) } are denoted as C (Num, Num '),
C (Num, Num ')=Pois (αT1λ,αT2λ,…,αTnλ)=λ [- Pois(N)(λ)+αT1Pois(N-1)(λ)+…+αTNPois
(λ)],
Wherein Pois (λ)=e-Nλ；N indicates the number of vehicles of the n-th moment Tn；
λ=[n, Num ' (n)]T, []TIt indicates to carry out transposition to [] herein, λ is random vector, is pre- according to SVR short-term traffic flow
The modulus value in the sum of the single order item of { Num ' (n) } at the n-th moment this set measured；
{ Num (n) } is modified：
The probability density of { Num ' (n) } under the conditions of { Num (n) } is set again：
P (Num ' | Num)=p (Num ', Num)/p (Num)=Pois (Num ', λNum’|Num), wherein Pois (Num ', λNum’|Num)
It is equal to λ for mean valueNum’|Num, variance matrix M bePoisson function, CA, BIt indicates between A and B
Cross covariance,
Then
8. system according to claim 7, which is characterized in that the correction subelement includes：Ratio obtains module, is used for
Obtain red, green light lighting time length the ratio R [n] of the signal lamp at the crossing that will be arrived at；
First chocking-up degree obtains module, for obtaining vehicle at a upper crossing to the road between the crossing that will be arrived at
First chocking-up degree Dcrowd of section；
Time scale modification module, for being modified to the signal period duration T [n+1] that will arrive at crossing：
WhereinExpression takes integer, Num'[n] indicate that the n-th moment revised will arrive at crossing from a upper crossing
Number of vehicles, Num'[n+1] indicate prediction to the number of vehicles that will arrive at crossing from a upper crossing at the (n+1)th moment
Number, BrpreIndicate the turnout number at a crossing, BrnowIndicate the turnout number at the crossing that will be arrived at, i and j are positive integer.
9. system according to claim 8, which is characterized in that the second prompt information generation unit includes：
Road network chocking-up degree submodule determines a crossing for the value according to T [n+1] compared with preset threshold set
And the second road network chocking-up degree between crossing will be arrived at, using the second road network chocking-up degree as the second prompt information.
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| CN201810799863.8A CN108877245A (en) | 2018-07-19 | 2018-07-19 | A kind of dynamic wisdom relief control system |
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|---|---|---|---|
| CN201810799863.8A CN108877245A (en) | 2018-07-19 | 2018-07-19 | A kind of dynamic wisdom relief control system |
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