CN109523809A - Aerial mobile shows comprehensive platform - Google Patents
Aerial mobile shows comprehensive platform Download PDFInfo
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- CN109523809A CN109523809A CN201811381436.4A CN201811381436A CN109523809A CN 109523809 A CN109523809 A CN 109523809A CN 201811381436 A CN201811381436 A CN 201811381436A CN 109523809 A CN109523809 A CN 109523809A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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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
- 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
- G08G1/095—Traffic lights
- G08G1/0955—Traffic lights transportable
Abstract
The present invention relates to a kind of aerial mobiles to show comprehensive platform, belongs to intelligent transportation and algorithm crossing domain.It is characterized in that, the platform by intelligent display platform, can be formed in the mobile mobile platform of three-dimensional space, with the interactive software of terminal.The intelligent display platform can obtain the wagon flow knowledge on road using the method for machine learning, to dynamically adjust the display time (t) of traffic lights.The mobile platform can adjust it in the stop place (p) in three-dimensional display space according to factors such as weather, traffic conditions.The interactive software can be run at terminal (such as smart phone, steering wheel), to show driver's key message, such as at a distance from next platform, (the t of real-time, interactive, p), according to display color, the text of traffic lights etc. after the time of traffic condition predictions to the next platform, personalized conversion.The traffic control efficiency that the invention will be greatly lifted under the environment such as dense fog, vehicle congestion.
Description
Technical field
The present invention relates to a kind of aerial mobiles to show comprehensive platform, belongs to intelligent transportation and algorithm crossing domain.
Background technique
In recent years, along with fast-developing and urbanization process the quickening of China's economy and showing for living standards of the people
Write and improve, automobile generally enters common people family, automobile bring people it is convenient while also bring many traffic problems；
Traffic problems, which have become, seriously affects fast-developing very important important of China's Modernized City Construction and national economy
Problem, therefore the current rule of vehicle is studied, the traffic lights that design is scientific and reasonable become the problems such as alleviating traffic jam
Method；3 chrominance signal lamps of the main still fixed type of traffic lights at this stage, the change for traffic circulation, Xiao Rui
Apply for a kind of patent of intelligent traffic lamp, it is intended to pass through vehicle flowrate real-time change signal timing change interval；For handing over
The failure problems Ling Bing beautiful woman of ventilating signal lamp proposes a kind of patent of intelligent traffic lamp, it is intended to multiple with connection by setting up
Signal lamp send the signal lamp wherein to break down, so that signal lamp is timely repaired；For mobile traffic signal
Lamp history far announces a kind of Mobile traffic light, it is intended to solve flight loading in the bad weathers such as strong wind and self-contained electricity
Force system etc. leads to the patent of moving traffic light failure；The present invention proposes that a kind of aerial mobile shows comprehensive platform, can have
Effect ground solves several pain spots of traffic lights at this stage: first is that traffic lights installation site is incorrect or is blocked, second is that
In the low weather of dense degree of opinion, the light intensity of signal lamp is relatively small, third is that crossroad is wherein in morning peak or evening peak
One arterial highway relatively crowded and another relative loose, cause time efficiency low etc..
Summary of the invention
Technical problem: the present invention is a kind of aerial mobile display comprehensive platform, is mainly used for solving to observe driver
There are the bad weather circumstances such as the vision blind spot, dense fog heavy rain heavy snow of barrier, oversize vehicle etc., traffic stifled when traffic lights in front
When plug, traffic lights can not be aiming at the problem that the above specific condition carries out targetedly controlling traffic condition；It is existing
The position of traffic lights is fixed, shows that the time is approximately fixed, does not interact effectively with driver, thus to a certain extent
Inconvenience is brought to driver, the present invention moves from three-dimensional space, shows temporally variableization and terminal real-time, interactive angularly
Existing crossing traffic control equipment is optimized, proposes that a kind of aerial mobile shows comprehensive platform, to reduce driving brain, side
Just driver, and promote the traffic control efficiency at crossing.
Technical solution: the present invention is a kind of aerial mobile display comprehensive platform, from driver, manager, display platform, friendship
Mutually angularly propose the solution to above-mentioned technical problem, it may be assumed that
It from the angle of display platform, makes it more intelligent, and it is shown in a given three-dimensional mobile range and is built
Mould, display platform can (there be the vision blind spot of barrier, oversize vehicle etc., dense fog heavy rain in front according to current traffic condition
The bad weather circumstances such as heavy snow, traffic jam etc.) stop place of adjustment display in real time, to guarantee driver all on road all
It can clearly see that traffic lights are shown, and it is possible to obtain road in wagon flow in different time periods according to the method for machine learning
Data, information and knowledge make getting up early driver as far as possible not several so that the traffic lights for changing display platform in real time show the time
Morning without vehicle waits the red light of overlength；
From the angle of driver, by using interactive software, in the terminal that driver uses (such as smart phone, steering wheel
Deng) display be convenient for driver's decision key message, such as: such as at a distance from next platform, real-time, interactive (t,
P), according to display color, the text to the traffic lights after the time of next platform, personalized conversion of traffic condition predictions
This etc.；Wherein, specific scheme is: (1) will be by existing map application at a distance from next total value and display platform
API is obtained, and the traffic lights of (2) real-time, interactive shows that time (t) obtains shifting of the wagon flow on road by the method for machine learning
Rule is moved, related data, information and knowledge are obtained, thus by an algorithm adjusting traffic lights display time, the one of driver
Demand be when it reaches crossing traffic lights be it is green, to reduce the waiting time, the present invention has proposed a technical solution
It solves the problems, such as this, shows that the time models based on all users for having this demand and traffic lights, the display time adjusts dynamic
It is whole, to adapt to the preferred plan of the most short waiting time of all users；(3) display position of the traffic lights traffic lights of interaction when
(p) it is angularly modeled according to current vehicle location, weather, traffic condition lamp, according to all driving of optimization algorithm calculated equilibrium
Person facilitates the best stop place of driving；(4) according to the time to next platform of traffic condition predictions, most of
In the case of, vehicle is had before driver and is being travelled, and the time for reaching next display platform will be determined by traffic condition；
(5) display color, the text of traffic lights etc. after personalized conversion, some users may be colour blindness, then present invention offer pair
Conversion plan is understood in the traffic lights of traffic lights and colour blindness user, and personalized offer shows traffic lights in terminal with text
The scheme that this form is shown.
Architecture:
Fig. 1 is a kind of specific flow chart of aerial mobile display comprehensive platform, and Fig. 2 is a kind of aerial mobile display comprehensive platform
The position dynamic adjustment model at driver visual angle, by the calculating of the model, be able to solve in front of driver have barrier or
The problem of observation signal lamp inconvenience when oversize vehicle；Fig. 3 is an a kind of carrying out practically mould of aerial mobile display comprehensive platform
Type, Fig. 4 are an a kind of hardware embodiments of aerial mobile display comprehensive platform.
Beneficial effect
The present invention is a kind of aerial mobile display comprehensive platform, is angularly examined from driver, manager, display platform, interactivity
Consider, propose the prioritization scheme for existing traffic lights, is i.e. aerial mobile shows comprehensive platform, has following beneficial to effect
Fruit:
1) effectively light transmission of the solution under the weather environments such as dense fog, heavy rain, sandstorm is obstructed and brings the observation friendship of driver
The logical unsmooth problem of lamp, greatly avoid due to observe in inclement weather traffic lights be obstructed initiation interpreter thus generation；
2) by obtaining and analyzing wagon flow, traffic state data, information, knowledge, dynamic adjusts traffic lights and shows the time, effectively
The traveling efficiency for improving driver, reduces the unnecessary waiting time；
3) changed by the display position of the platform, effectively solve to cause due to barrier, the oversize vehicle in front of driver
The unsmooth problem of observation traffic lights, reduce relevant traffic accident, facilitate the driving of driver；
4) interactive software provided by the invention is mounted on intelligent mobile phone terminal or steering wheel or in-vehicle display, is provided
Related data for example at a distance from next platform, the time prediction of arrival, next platform real-time traffic
Lamp shows time and change in location data etc., it will help driver grasps present case, facilitates driving.
Detailed description of the invention
Fig. 1 is a kind of specific implementation process of aerial mobile display comprehensive platform；
Fig. 2 is a kind of position dynamic adjustment model at a driver visual angle of aerial mobile display comprehensive platform；
Fig. 3 is an a kind of moving model of aerial mobile display comprehensive platform；
Fig. 4 is an a kind of hardware embodiment of aerial mobile display comprehensive platform.
Specific embodiment
The present invention is a kind of aerial mobile display comprehensive platform, it is characterised in that:
Step 1) as shown in figure 1 001 shown in, the present invention sets one and moves for mobile three-dimensional of the aerial mobile display platform
Dynamic space, the position of the platform are set as p (x, y, z), and removable spatial dimension is (x0, y0, z0), the comprehensive platform
Position can be according to driver's mould within the scope of weather (Weather), traffic condition (Traffic), affiliated platform Observable
The factors such as type (Driver) adjust its display position, calculate as follows:
(1)
Wherein, a1、b1、c1Respectively indicate the position of platform (p (Weather)) of weather decision, the position of platform (p that traffic determines
And the influence that position that the platform is final is determined of the position of platform (p (Driver)) that determines of driver model (Traffic))
Weight is obtained by data training, it is obvious that a reasonable numerical value distribution is a1=0.2, b1=0.35, c1=0.45, other numerical value
Distribution also belongs to the scope of the present invention；
Step 2 as shown in figure 1 002 shown in, the traffic lights of the platform show the time can dynamic regulation, based on machine learning
The vehicle flowrate (TrafficFlow) at crossing where method obtains the platform, observation traffic condition (TrafficCondition),
Display time demand model (DriverModel) of driver etc. is obtained because usually determining that the red greenish-yellow lamp of traffic lights shows the time
(t (r, g, y)) is calculated as follows:
(2)
Wherein, di indicates the road across crossing, wherein a2、b2、c2Display time (the t for dividing table to indicate that vehicle flowrate determines
(TrafficFlow)) what the display time (t (TrafficCondition)) and driver model that, traffic condition determines determined
The weighing factor that position of platform (t (DriverModel)) the display time final to the platform determines, trained by data
Out, it is obvious that a reasonable numerical value distribution is a2=0.6, b2=0.25, c2=0.15, the distribution of other numerical value also belongs to the present invention
Protection scope；
Step 3) as shown in figure 1 003 shown in, the traffic lights of the platform show intensity can dynamic regulation, according to current weather feelings
Condition carries out luminous intensity modeling, and weather conditions include the Media density and type for hindering light transmission that weather causes, to calculate
Into the air between driver to the Weaken degree of light intensity, the present invention sets one and drives in the range of consideration the platform
The person of sailing receives the angular threshold value from the platform vehicle lamp, while also considering the intensity shadow of the illumination to traffic lights on daytime
It rings, calculates as follows:
(3)
Wherein, k indicates to absorb the influence to the intensity of light source, and l indicates influence of the air dielectric to light source, and r indicates driver to friendship
The distance of logical lamp；
Step 4) as shown in figure 1 004 shown in, interactive software will run directly in the terminals such as steering wheel, the smart phone of driver
On, by the wireless network or cellular network in region, the traffic lights obtained based on step 1 and step 2 show the time
(t (r, g, y)di) and display platform position (p (x, y, z)) will show in real time in driver's terminal；
As shown in figure 3, terminal also shows the road distance (s from driver position to next comprehensive platformnext), pass through
Baidu map, the high API such as map that obtain is called to obtain simultaneously real-time display；
As shown in figure 3, terminal also shows driver current location to the time (t of next comprehensive platformnext), specifically
Implementer's case is: according to current vehicle speed (SpeedDriver), current and prediction traffic condition (CongestionLevel),
The real-time dynamic traffic control situation (RLCT) of the comprehensive platform predicts driver's arriving to next comprehensive platform
Up to time (Tnext), the time is inversely proportional with speed, and it is directly proportional to traffic condition, it is red with the dynamic traffic control of the platform
Lamp show it is directly proportional, calculate it is as follows:
(4)
Wherein RLCT indicates that red light controls the time, and CongestionLevel indicates traffic congestion degree, SpeedDriverIndicate vehicle
Speed；
As shown in figure 3, terminal also provides the personalized conversion displaying scheme of traffic lights, it is described for protanopia anerythrochloropsia crowd
Red greenish-yellow signal lamp is converted into the displaying color that protanopia anerythrochloropsia crowd can understand, i.e. Color by terminalDriver=Conversion
(r, g, y);Meanwhile the signal lamp of the comprehensive platform can also be converted into text information (Text by terminalDriver), display
In the interactive terminal that driver uses；
As shown in figure 3, terminal also provides the interactive function of driver Yu the comprehensive platform, the demand of driver first is that at it
When reaching next comprehensive platform, traffic lights just show green light, therefore driver can be by this demand according to step
The time of the rapid 4 next platforms of arrival calculated in real time submits demand, and later, the comprehensive platform will be according to all propositions
The display of user group's signal lamp of this requirement is time-optimized；
Step 5) as shown in figure 1 005 shown in, a kind of aerial mobile shows comprehensive platform, and a kind of embodiment is to utilize
Unmanned plane hangs traffic signalization and display equipment, is used at traffic intersection, as shown in figure 4, consisting of unmanned plane (1)
General traffic lights (2), network transmission module (3), data processing module composition (4) have and can use API acquisition correlation
Data, the computing capability for running related algorithm, while unmanned plane can take manual control and automatic control, network transmission module
It is being also used to the platform to be set with driver interactive basis for implementing to obtain the data such as the traffic, the weather that calculate from cloud
It applies；From the point of view of constituting, unmanned plane is located at the top of universal signal lamp and data processing module, network transmission module.Four direction
Traffic lights data processing module is not entered to be trapped among centre, network transmission module is located at lower side, guarantees data transmission effect
Rate.
Wherein, step 1 further include:
The position that the comprehensive platform is adjusted according to weather condition dynamic, it is presently believed that multiple road directions, height at crossing
The weather condition at place may be different, such as the mist in a direction is big, and the mist in another direction is small, therefore in order to adapt to this feelings
The case where condition, the platform will influence sight according to current weather dynamic adjustment position, calculates as follows:
Wherein, { x0,y0,z0Indicate the current location of the platform, distencex(Traffic) indicate x as many as cross
Traffic intersection x to road on traffic congestion degree and the platform the corresponding relationship between the short distance, instructed by data
Experienced goes out；
The position of the comprehensive platform is dynamically adjusted according to traffic conditions, it is presently believed that the traffic when a road becomes
When crowded, it should the platform is located proximate to its congested link, with more convenient driver's observation signal lamp, meanwhile, no
The jam situation for managing that road is more than threshold value, and the platform is all by raised position so that it facilitates driving in obvious position
Person；The calculating of the position of platform determined by traffic conditions is as follows:
Wherein, { x0,y0,z0Indicate the current location of the platform, distencex(Traffic) indicate x as many as cross
Traffic intersection x to road on traffic congestion degree and the platform the corresponding relationship between the short distance, instructed by data
Experienced goes out；
The position of the platform is adjusted according to driver model dynamic, it is presently believed that driver may be because driving for place vehicle
Position is sailed, there are problems that front has oversize vehicle, barrier etc. to influence the driver and observes the front bracket signal displaying,
Moreover, the present invention carries out the driver on road where crossing in a more than user there are under conditions of such problems
Modeling, and solution is proposed to guarantee that the user of all model considerations can observe the signal lamp of the platform, tool
Body calculates as follows:
For single driver, as shown in Fig. 2, the side length according to similar triangles is proportional, dynamic z-axis adjustment meter adjusted
It calculates as follows:
(7)
Wherein, H0It indicates to block the barrier of driver's observation signal lamp or the height of vehicle sight line, X0Indicate driver position
The distance of the barrier or vehicle is set, x indicates distance of the driver position to the platform, zpingtaiIndicate the platform
Height apart from ground；
So, to meet institute it is useful signal lamp can be seen in the case where having barrier or vehicle, i.e., in desired range
The maximum value of height is inside taken, is calculated as follows:
(8)
Wherein, z0Indicate the reasonable lower limit of the platform, z1Indicate the reasonable upper bound of the platform.
Wherein, step 2 further include:
The green light measured according to vehicle shows that the time is calculated by following equation:
(9)
Wherein,For the green light display cycle,For green light in display according to specific feelings
The loss time of condition, thereforeFor effective display time of green light, Ai indicates the i-th phase
The yellow time at position end, li indicate that the green light time interval at the i-th phase end, l indicate the starting loss time, and actual measurement obtains, no reality
It can use 3s when measured data；
The green light obtained according to traffic conditions shows that the time is calculated by following formula:
(10)
Wherein, k indicates that traffic congestion degree (DegreeCongestion) is directly proportional to the display of traffic lights green light, and k is
Influence coefficient；
The signal timing that the platform is directed to driver model optimization is calculated according to the demand model of driver, is calculated as follows:
(11)
Wherein, tnext indicates driver to the predicted time of next platform, and c is that tnext shows signal lamp green light
Integral multiple, t indicate time difference when driver really reaches next platform with green light next time, and prioritization scheme is to make
Comprehensive time difference is minimum, and therefore, when having this demand by m driver, the platform is calculated in driver demand's model
Under generalized time difference () are as follows:
(12)。
Claims (3)
1. the present invention is a kind of aerial mobile display comprehensive platform, it is characterised in that:
The step 1) present invention sets a three-dimensional mobile space mobile for the aerial mobile display platform, the platform
Position is set as p (x, y, z), and removable spatial dimension is (x0, y0, z0), and the position of the comprehensive platform can be according to day
The factors such as gas (Weather), traffic condition (Traffic), driver model (Driver) within the scope of affiliated platform Observable
Its display position is adjusted, is calculated as follows:
(1)
Wherein, a1、b1、c1Position of platform (the p of the position of platform (p (Weather)), traffic decision of dividing table to indicate that weather determines
And the influence that position that the platform is final is determined of the position of platform (p (Driver)) that determines of driver model (Traffic))
Weight is obtained by data training, it is obvious that a reasonable numerical value distribution is a1=0.2, b1=0.35, c1=0.45, other numerical value
Distribution also belongs to the scope of the present invention；
The traffic lights of platform described in step 2 show the time can dynamic regulation, the method based on machine learning obtains the platform institute
When the vehicle flowrate (TrafficFlow) at crossing, observation traffic condition (TrafficCondition), obtaining the display of driver
Between demand model (DriverModel) etc. because usually determining that the red greenish-yellow lamp of traffic lights shows time (t (r, g, y)), calculate
It is as follows:
(2)
Wherein, di indicates the road across crossing, wherein a2、b2、c2Display time (the t for dividing table to indicate that vehicle flowrate determines
(TrafficFlow)) what the display time (t (TrafficCondition)) and driver model that, traffic condition determines determined
The weighing factor that position of platform (t (DriverModel)) the display time final to the platform determines, trained by data
Out, it is obvious that a reasonable numerical value distribution is a2=0.6, b2=0.25, c2=0.15, the distribution of other numerical value also belongs to the present invention
Protection scope；
The traffic lights of platform described in step 3) show intensity can dynamic regulation, carry out luminous intensity modeling according to current weather conditions,
Weather conditions include weather cause hinder light transmission Media density and type, thus calculate the platform to driver it
Between air in the Weaken degree of light intensity, the present invention set one in the range of consideration driver receive from described
The angular threshold value of platform vehicle lamp, while the intensity effect of the illumination to traffic lights on daytime is also considered, it calculates as follows:
(3)
Wherein, k indicates to absorb the influence to the intensity of light source, and l indicates influence of the air dielectric to light source, and r indicates driver to friendship
The distance of logical lamp；
Step 4) interactive software will be run directly in the terminals such as steering wheel, the smart phone of driver, pass through the nothing in region
Gauze network or cellular network, the traffic lights obtained based on step 1 and step 2 show time (t (r, g, y)di) and it is aobvious
Show that position of platform (p (x, y, z)) will be shown in real time in driver's terminal；
Terminal also shows the road distance (s from driver position to next comprehensive platformnext), by with calling Baidu
Figure, the high API such as map that obtain obtain simultaneously real-time display；
Terminal also shows driver current location to the time (t of next comprehensive platformnext), specific implementer
Case is: according to current vehicle speed (SpeedDriver), it is current flat with traffic condition (CongestionLevel), the synthesis of prediction
The real-time dynamic traffic control situation (RLCT) of platform, the arrival time of prediction driver to next comprehensive platform
(Tnext), the time is inversely proportional with speed, and it is directly proportional to traffic condition, it is shown with the red light of the dynamic traffic control of affiliated platform
It is directly proportional, it calculates as follows:
(4)
Wherein RLCT indicates that red light controls the time, and CongestionLevel indicates traffic congestion degree, SpeedDriverIndicate vehicle
Speed；
Terminal also provides the personalized conversion displaying scheme of traffic lights, and for protanopia anerythrochloropsia crowd, the terminal will be red green
Amber light is converted into the displaying color that protanopia anerythrochloropsia crowd can understand, i.e. ColorDriver=Conversion(r, g, y);Together
When, the signal lamp of the comprehensive platform can also be converted into text information (Text by terminalDriver), it is shown in driver's use
Interactive terminal；
Terminal also provides the interactive function of driver Yu the comprehensive platform, the demand of driver first is that next in its arrival
When the comprehensive platform, traffic lights just show green light, therefore driver can calculate this demand according to step 4 in real time
Time of the next platform of arrival submit demand, later, the comprehensive platform will propose this requirement according to all
The display of user group's signal lamp is time-optimized；
A kind of aerial mobile described in step 5) shows comprehensive platform, and a kind of embodiment is to hang traffic signals using unmanned plane
Control and display equipment, are used at traffic intersection, consisting of unmanned plane, general traffic lights, network transmission module, number
It is formed according to processing module, has and can use the computing capability that API obtains related data, runs related algorithm, while unmanned plane
Manual control and automatic control can be taken, network transmission module is used to implement to obtain the number such as traffic, weather calculated from cloud
According to being also used to the platform with driver interactive basis facility；From the point of view of constituting, unmanned plane is located at universal signal lamp sum number
According to processing module, the top of network transmission module；
Data processing module is not entered to be trapped among centre by the traffic lights of four direction, and network transmission module is located at lower side, is protected
Demonstrate,prove data transmission efficiency.
2. a kind of aerial mobile display comprehensive platform according to claim 1, it is characterised in that step 1 further include:
The position that the comprehensive platform is adjusted according to weather condition dynamic, it is presently believed that multiple road directions, height at crossing
The weather condition at place may be different, such as the mist in a direction is big, and the mist in another direction is small, therefore in order to adapt to this feelings
The case where condition, the platform will influence sight according to current weather dynamic adjustment position, calculates as follows:
Wherein, { x0,y0,z0Indicate the current location of the platform, distencex(Traffic) indicate x as many as cross friendship
Access mouth x to road on traffic congestion degree and the platform the corresponding relationship between the short distance, trained by data
Go out；
The position of the comprehensive platform is dynamically adjusted according to traffic conditions, it is presently believed that the traffic when a road becomes
When crowded, it should the platform is located proximate to its congested link, with more convenient driver's observation signal lamp, meanwhile, no
The jam situation for managing that road is more than threshold value, and the platform is all by raised position so that it facilitates driving in obvious position
Person；The calculating of the position of platform determined by traffic conditions is as follows:
Wherein, { x0,y0,z0Indicate the current location of the platform, distencex(Traffic) indicate x as many as cross friendship
Access mouth x to road on traffic congestion degree and the platform the corresponding relationship between the short distance, trained by data
Go out；
The position of the platform is adjusted according to driver model dynamic, it is presently believed that driver may be because driving for place vehicle
Position is sailed, there are problems that front has oversize vehicle, barrier etc. to influence the driver and observes the front bracket signal displaying,
Moreover, the present invention carries out the driver on road where crossing in a more than user there are under conditions of such problems
Modeling, and solution is proposed to guarantee that the user of all model considerations can observe the signal lamp of the platform, tool
Body calculates as follows:
Proportional according to the side length of similar triangles for single driver, dynamic z-axis adjustment adjusted calculates as follows:
(7)
Wherein, H0It indicates to block the barrier of driver's observation signal lamp or the height of vehicle sight line, X0Indicate driver position
To the distance of the barrier or vehicle, x indicates distance of the driver position to the platform, zpingtaiIndicate the platform away from
Height from the ground；
So, to meet institute it is useful signal lamp can be seen in the case where having barrier or vehicle, i.e., in desired range
The maximum value of height is inside taken, is calculated as follows:
(8)
Wherein, z0Indicate the reasonable lower limit of the platform, z1Indicate the reasonable upper bound of the platform.
3. a kind of aerial mobile display comprehensive platform according to claim 1, it is characterised in that step 2 further include:
The green light measured according to vehicle shows that the time is calculated by following equation:
(9)
Wherein,For the green light display cycle,For green light in display according to tool
The loss time of body situation, thereforeFor effective display time of green light, Ai is indicated
The yellow time at the i-th phase end, li indicate that the green light time interval at the i-th phase end, l indicate the starting loss time, and actual measurement obtains,
It can use 3s when no measured data；
The green light obtained according to traffic conditions shows that the time is calculated by following formula:
(10)
Wherein, k indicates that traffic congestion degree () is directly proportional to the display of traffic lights green light, and k is to influence coefficient；
The signal timing that the platform is directed to driver model optimization is calculated according to the demand model of driver, is calculated as follows:
(11)
Wherein, tnextDriver is indicated to the predicted time of next platform, c is tnextSignal lamp green light is shown whole
Several times, t indicate time difference when driver really reaches next platform with green light next time, prioritization scheme be make it is comprehensive
The time difference of conjunction is minimum, and therefore, when having this demand by m driver, the platform is calculated under driver demand's model
Generalized time difference () are as follows:
(12)。
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