CN103646555A - A control method for traffic lamps and a system thereof - Google Patents
A control method for traffic lamps and a system thereof Download PDFInfo
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- CN103646555A CN103646555A CN201310597108.9A CN201310597108A CN103646555A CN 103646555 A CN103646555 A CN 103646555A CN 201310597108 A CN201310597108 A CN 201310597108A CN 103646555 A CN103646555 A CN 103646555A
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Abstract
The invention discloses a control method for traffic lamps and a system thereof. The method comprises the following steps: road information is acquired according to a plurality of preset directions in real time; data analysis is carried out on the acquired road information, and according to analysis results, control signals are output to various traffic lamps; specifically, a first work module in busy periods and a second work module in non-busy periods are included; in the busy periods of going to work and going off work, the control signals are output to the traffic lamps according to a preset sequence, and the traffic lamps can be temporarily adjusted to gives a direction in which vehicles come the priority of passage; and in the non-busy periods, the direction in which vehicles come is made to maintain in a green light state for a long time, and a direction in which none vehicle comes is made to maintain in a red light state for a long time until the road surface information changes, so that unnecessary waiting of the vehicles due to switching of the red light and the green light in a traditional mode is avoided. Conditions of road congestion are accordingly alleviated to a great extent. The travel efficiency and the vehicle driving speed are raised. Furthermore, the fuel oil consumption and the pollution are reduced.
Description
[technical field]
The present invention relates to field of traffic, relate in particular to a kind of control method and system thereof of traffic lights.
[background technology]
Since 2000, China entered auto age, and within 2012 1 year, automobile volume of production and marketing surpasses 2,000 ten thousand, becomes Global Auto big country.It is serious year by year that following problem is that urban traffic road blocks up, and Beijing, Shanghai, Guangzhou, Shenzhen are especially serious, and blocking up of road brings following problem:
1, trip Efficiency Decreasing, original automobile is in order to increase work efficiency, and saves time, the plenty of time is wasted in road on the contrary now, has reduced entire society's economic development efficiency;
2, owing to blocking up, cause Vehicle Speed greatly to reduce, so same road increased apart from the time of motor car engine running, fuel oil increases greatly, such as, city, Hong Kong speed of a motor vehicle is on average at 60 kilometers, and Shenzhen of next-door neighbour only has 30 kilometers, oil consumption meeting doubles like this, the increase of oil consumption, except bringing cost increase, brings energy resource consumption to increase, and has increased national original with regard to nervous Pressure on Energy;
3, along with the increase of fuel oil, the discharge capacity of vehicle exhaust is corresponding increase also, incomplete combustion at low speed driving or while stopping running especially, and automobile exhaust pollution is more serious, the haze weather causing is thus healthy to whole city inhabitant, and particularly old man and child's health is brought serious threat.
[summary of the invention]
For solving congestion in road that the control method of existing traffic lights causes, go out that line efficiency is low, Vehicle Speed is low, and the fuel consume causing increases, the problem of pollution grows worse.The invention provides a kind of control method of traffic lights.
Concrete technical scheme is as follows:
A control method for traffic lights, comprising:
By predefined multiple directions Real-time Collection information of road surface;
Gathered information of road surface is carried out to data analysis, and exports corresponding control signal to each traffic lights according to described analysis result, specifically comprise:
Mode of operation one:
At predetermined peak hours/period, by the corresponding control signal of set Sequential output, give each traffic lights;
When being shown as, the traffic lights of certain direction allows under current state, in data analysis, go out this direction current complete without sending a car or sending a car, the traffic lights output control signal that no through traffic to this direction, and the traffic lights output of other at least one directions is allowed to current control signal;
Mode of operation two:
At predetermined non-peak hours/period, in data analysis, going out certain direction sends a car, other directions of intersecting with this direction are current when complete without sending a car or sending a car, traffic lights output to this direction allows current control signal, to the traffic lights of other at least one directions of intersecting with this direction, exports the control signal that no through traffic;
When data analysis goes out this direction and all send a car with other at least one directions that this direction is intersected, by the corresponding control signal of mode of operation one output, give each traffic lights.
A traffic light control system, comprising:
Information of road surface acquisition module, at predefined multiple directions Real-time Collection information of road surface;
Information of road surface analysis module, carries out data analysis for the information of road surface to gathered;
Control signal output module, for exporting corresponding control signal according to analysis result to each traffic lights, specifically comprises:
Mode of operation one:
At predetermined peak hours/period, by the corresponding control signal of set Sequential output, give each traffic lights;
When being shown as, the traffic lights of certain direction allows under current state, in data analysis, go out this direction current complete without sending a car or sending a car, the traffic lights output control signal that no through traffic to this direction, and the traffic lights output of other at least one directions is allowed to current control signal;
Mode of operation two:
At predetermined non-peak hours/period, in data analysis, going out certain direction sends a car, other directions of intersecting with this direction are current when complete without sending a car or sending a car, traffic lights output to this direction allows current control signal, to the traffic lights of other at least one directions of intersecting with this direction, exports the control signal that no through traffic;
When data analysis goes out this direction and all send a car with other at least one directions that this direction is intersected, by the corresponding control signal of mode of operation one output, give each traffic lights.
Beneficial effect of the present invention:
The present invention, at the peak hours/period of upper and lower class, can give each traffic lights by set Sequential output control signal, and can adjust traffic lights temporarily, allows the orientation preferentially of sending a car pass through; At non-peak hours/period, not according to set Sequential output control signal, to the traffic lights that has the direction of sending a car, continue output and allow current control signal, make it for a long time in green light phase, the traffic lights of the direction of sending a car to nothing continues the output control signal that no through traffic, make it for a long time in red light phase, until crisscross information of road surface changes, avoided the unnecessary vehicle causing because of red green fixedly switching under traditional mode to wait for.Alleviate to a great extent the situation of congestion in road, improved and that line efficiency is low, Vehicle Speed, reduced fuel consume, pollution.
[accompanying drawing explanation]
Fig. 1 is the workflow diagram of control method of the present invention;
Fig. 2 is the structural drawing of control system of the present invention.
[embodiment]
In the situation that now road conditions and automobile quantity are constant, if there is way to improve automotive average speed per hour, such as improving 20%, so at the end of the day, the Integral automobile in the city time on the way has just lacked 20%, except having improved work efficiency, fuel consume has saved 20% in one day, and the discharge capacity of vehicle exhaust is also corresponding has reduced 20%, because the speed of a motor vehicle improves, burn more complete, tail gas reduces more to the pollution of air.By speed-raising 20%, suppose that 1 year 700000000 tons of oil of China have 70% to be city urban transit system consumption, within 1 year, can save hundred million tons of crude oil 7*70%*20%=0.98, be equivalent to the annual production that a Daqing oil field adds a Shengli Oil Field, also can greatly reduce national energy pressure.
Find afterwards after deliberation, the one of the main reasons of blocking up of road is that the traffic intersection traffic lights control time is to fix, not according to the clearance time of flexible each direction of intelligent control of real-time condition, this has several irrational situations: 1, a direction vehicle is a lot, the green light part of having let pass, also have a lot of vehicles to wait for, and another direction only has several cars to wait for, traffic lights just switch by the set time, the more average speeds of vehicle of waiting for will be lower, should prior-release vehicle many sides, give this direction green light longer time, more vehicles of letting pass, 2, after a direction green light, in fact only have several cars, in several seconds, just all pass through, but green light is still pressed fixing setting-up time light yellow, the vehicle of another direction more waits more, and this has just reduced average speed, 3, direction vehicle green light is let pass, and does not also discharge, and has become red light, vehicle waits of stopping, and in fact another direction does not have a car, and green light switching light yellow, this phenomenon has more night and non-peak hours/period now, 4, major trunk roads and minor road direction traffic lights set of time, major trunk roads vehicle is many, should more maintenances walk always, avoid vehicle brake to wait for as far as possible, brake consumed energy, start static car consumed energy again, can allow branch line crossing vehicle be accumulated to some and switch again green light and let pass, once till letting pass and just discharging, 5, pedestrian crossing clearance arrangement of time, can judgement number to some again green light let pass, raise the efficiency, manyly should arrange pedestrian to walk overline bridge.
Followingly be explained in detail in conjunction with the preferred embodiments.
Embodiment 1
As Fig. 1, a kind of control method of traffic lights, comprising:
By predefined multiple directions Real-time Collection information of road surface;
Gathered information of road surface is carried out to data analysis, and export corresponding control signal to each traffic lights according to described analysis result, can analyze traffic according to the information of road surface collecting, and judgement draws optimum mode of operation, then by the mode of operation of described optimum, export each traffic lights of corresponding control signal, make traffic more unimpeded, specifically comprise mode of operation one, two, preferred mode of operation three, four, five, and error correction mode of operation, it should be noted that, according to real-time information of road surface, between various mode of operations, all can switch mutually:
Mode of operation one:
This mode of operation is applicable to peak hours/period, and such as upper and lower class of peak period, the concrete time period can be set according to on-site traffic conditions difference, in this period, by the corresponding control signal of set Sequential output, gives each traffic lights; Being somebody's turn to do " set order " can be with reference to transfer sequence and the switching interval time of conventional traffic light;
Under the basic framework of above-mentioned " set order ", comprise a kind of special circumstances, under " set order ", the traffic lights of certain direction is shown as the current state (being green light) that allows, yet according to the information of road surface collecting, analyze for this direction current complete without sending a car or sending a car, for avoiding this direction sending a car and the phenomenon such as impassable sky without current other directions of car, the traffic lights output control signal (switching to red light) that no through traffic to this direction, and the traffic lights output of other at least one directions is allowed to current control signal (switching to green light), sending a car of other directions passed through, improve traffic efficiency, until export next group control signal by described " set order ", return to again the duty of " set order ",
Mode of operation two:
This mode of operation is applicable to non-peak hours/period, can be understood as, time outside peak hours/period is non-peak hours/period, in this period, often occur that certain direction sends a car, and other directions of intersecting are with it for a long time without car, be single direction or split that direction is sent a car and other directions are a kind of normalities without car, just the opposite with the traffic of peak hours/period, if still according to mode of operation one, obviously improper, reason has: easily occur a direction vehicle green light clearance, also do not discharge, become red light, the vehicle wait of stopping, and in fact another direction does not have a car, green light switches light yellow.For making the Vehicle Driving Cycle of non-peak hours/period more unobstructed, can carry corresponding control signal to each traffic lights according to mode of operation two, mode of operation two is specially:
According to the information of road surface collecting, analyzing certain direction sends a car, other directions of intersecting with this direction are when sending a car, traffic lights output to this direction allows current control signal, the traffic lights output control signal that no through traffic to other at least one directions of intersecting with this direction, the traffic lights of the direction that is about to send a car is set as long green light, the traffic lights of the direction that other are not sent a car is set as long red light, make the uncrossed direct line of sending a car of this direction, until the situation of sending a car of multiple directions changes, illustrate, by camera, obtain the information of (splitting direction for two) on four direction and sending a car simultaneously, when any one splits direction discovery without car, the traffic lights of controlling this direction continues as long red light, the traffic lights of another one direction continues as long green light.
Although at non-peak hours/period, single direction or split that direction is sent a car and other directions are a kind of normalities without car, but also likely occur that two crisscrossly all have a situation of sending a car, tackle this special circumstances, can enter described mode of operation one, by the corresponding control signal of mode of operation one output, give each traffic lights, until two crisscross all have the situation of sending a car to disappear after, return to again the mode of operation two of non-peak hours/period, by the corresponding control signal of mode of operation two output, give each traffic lights.
Mode of operation three:
This mode of operation is applicable to the situation of trunk roads and branch road intersection, especially in non-peak hours/period.
If two roads of splitting direction are respectively trunk roads and branch road, according to the information of road surface collecting, analyze two while splitting direction all without car, the traffic lights output to trunk roads direction allows current control signal, to the traffic lights output control signal that no through traffic of branch road direction; The reason of doing like this has: trunk roads vehicle is many, should more maintenances walk always, avoids vehicle brake to wait for as far as possible.
But, if according to the information of road surface collecting, analyzing branch road sends a car, and trunk roads are still current complete without sending a car or sending a car, to the traffic lights of trunk roads direction, export the control signal that no through traffic, traffic lights output to branch road direction allows current control signal, until sending a car of this branch road direction is current complete;
If when collecting trunk roads and branch road and all sending a car, at peak hours/period, by the corresponding control signal of mode of operation one output, give each traffic lights; At non-peak hours/period, by the corresponding control signal of mode of operation two output, give each traffic lights; Certainly, also can, according to real-time information of road surface, by other mode of operation, export corresponding control signal to each traffic lights.
Mode of operation four:
This mode of operation is applicable to the situation on walkway.
When being provided with walkway, in mode of operation two, when the traffic lights of certain direction is shown as while allowing current state duration to arrive setting value, be preferably 5 minutes, by the corresponding control signal of mode of operation four output, give each traffic lights, described mode of operation four:
If according to the information of road surface collecting, analyzing pedestrian's direction has pedestrian, to the current control signal of traffic lights output permission of pedestrian's direction, waits for after setting-up time, be preferably 20 seconds, then give each traffic lights by mode of operation one or the corresponding control signal of mode of operation two output; If according to the information of road surface collecting, analyze pedestrian's direction without pedestrian, continue by the corresponding control signal of mode of operation two output to each traffic lights.Certainly, also can, according to real-time information of road surface, by other mode of operation, export corresponding control signal to a traffic lights.
Mode of operation five:
This mode of operation for reply in emergency circumstances.
When according to the information of road surface that collects, analyze from certain direction, come send a car as ambulance, fire truck or start the emergency vehicles such as police car of warning lamp time, this direction is set as to the direction of prior-release, traffic lights output to this direction allows current control signal, until described ambulance, fire truck or start the police car of warning lamp current after, return to again in original mode of operation, by original mode of operation output control signal, give each traffic lights.Guarantee travelling smoothly of these emergency vehicles.Further, also comprise and to other crossings, send the notification message that this direction can be saved and protects car, fire truck or start the police car of warning lamp.Notify other crossings to carry out in advance counter-measure.It should be noted that, send a notification message, can adopt wired or wireless dispensing device, next crossing receives described notification message by corresponding receiving trap, and the notification message receiving is delivered in the device of output control signal, the device of output control signal can be existing C51, the conventional processors such as ARM, also can be other functional modules with output control signal, when exporting the device of control signal, receive after this notification message, export corresponding control signal to each traffic lights of its control, guarantee the current smoothly of emergency vehicles.
Error correction mode of operation:
When the traffic lights of certain direction being detected, be shown as the state duration that no through traffic while arriving setting value, be preferably 10 minutes, enter mode of operation one, automatically by the corresponding control signal of mode of operation one output, give each traffic lights; Bing Xiang control center sends request the request signal of maintenance, notifies the control center of far-end, notifies staff to take in time maintenance measures.It should be noted that, entering mode of operation one and send request signal can be two processes independently mutually.
Preferably, described information of road surface comprises vehicle fleet size, car speed and the class of vehicles of vehicle heading, each direction, can also comprise other information.
Embodiment 2
As shown in Figure 2, a kind of traffic light control system, comprising:
Information of road surface acquisition module, at predefined multiple directions Real-time Collection information of road surface; Concrete, described information of road surface acquisition module can adopt video camera, pressure transducer etc., at this, does not limit;
Information of road surface analysis module, carries out data analysis for the information of road surface to gathered; This information of road surface analysis module can adopt existing image processing module or sensing data processing module;
Control signal output module, for exporting corresponding control signal according to analysis result to each traffic lights, specifically comprises:
Mode of operation one:
At predetermined peak hours/period, by the corresponding control signal of set Sequential output, give each traffic lights;
When being shown as, the traffic lights of certain direction allows under current state, according to the information of road surface collecting, analyze this direction current complete without sending a car or sending a car, the traffic lights output control signal that no through traffic to this direction, and the traffic lights output of other at least one directions is allowed to current control signal;
Mode of operation two:
At predetermined non-peak hours/period, according to the information of road surface collecting, analyzing certain direction sends a car, other directions of intersecting with this direction are current when complete without sending a car or sending a car, traffic lights output to this direction allows current control signal, to the traffic lights of other at least one directions of intersecting with this direction, exports the control signal that no through traffic;
When according to the information of road surface collecting, when analyzing this direction and all sending a car with other at least one directions that this direction is intersected, by the corresponding control signal of mode of operation one output, give each traffic lights.
Information of road surface comprises vehicle fleet size, car speed and/or the class of vehicles of vehicle heading, each direction, can also comprise other information.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (10)
1. a control method for traffic lights, is characterized in that, comprising:
By predefined multiple directions Real-time Collection information of road surface;
Gathered information of road surface is carried out to data analysis, and exports corresponding control signal to each traffic lights according to analysis result, specifically comprise:
Mode of operation one:
At predetermined peak hours/period, by the corresponding control signal of set Sequential output, give each traffic lights;
When being shown as, the traffic lights of certain direction allows under current state, in data analysis, go out this direction current complete without sending a car or sending a car, the traffic lights output control signal that no through traffic to this direction, and the traffic lights output of other at least one directions is allowed to current control signal;
Mode of operation two:
At predetermined non-peak hours/period, in data analysis, going out certain direction sends a car, other directions of intersecting with this direction are current when complete without sending a car or sending a car, traffic lights output to this direction allows current control signal, to the traffic lights of other at least one directions of intersecting with this direction, exports the control signal that no through traffic;
When data analysis goes out this direction and all send a car with other at least one directions that this direction is intersected, by the corresponding control signal of mode of operation one output, give each traffic lights.
2. the control method of traffic lights as claimed in claim 1, it is characterized in that, also comprise mode of operation three: if two roads of splitting direction are respectively trunk roads and branch road, in data analysis, go out two while splitting direction all without car, the traffic lights output to trunk roads direction allows current control signal, to the traffic lights output control signal that no through traffic of branch road direction;
But, if data analysis out branch is sent a car,, to the traffic lights output control signal that no through traffic of trunk roads direction, to the traffic lights of branch road direction, export and allow current control signal, until sending a car of this branch road direction is current complete;
If data analysis goes out trunk roads and branch road while all sending a car, by mode of operation one or the corresponding control signal of mode of operation two output, give each traffic lights.
3. the control method of traffic lights as claimed in claim 1, it is characterized in that, when being provided with walkway, in described mode of operation two, when the traffic lights of certain direction is shown as while allowing current state duration to arrive setting value, by the corresponding control signal of mode of operation four output, give each traffic lights, described mode of operation four:
If go out pedestrian's direction in data analysis, there is pedestrian, to the current control signal of traffic lights output permission of pedestrian's direction, wait for after setting-up time, then give each traffic lights by mode of operation one or the corresponding control signal of mode of operation two output; If go out pedestrian's direction without pedestrian in data analysis, continue by the corresponding control signal of mode of operation two output to each traffic lights.
4. the control method of traffic lights as claimed in claim 1, it is characterized in that, also comprise mode of operation five: when data analysis go out certain direction send a car as emergency vehicles time, traffic lights output to this direction allows current control signal, until the police car of described ambulance, fire truck or startup warning lamp is current complete.
5. the control method of traffic lights as claimed in claim 4, is characterized in that, described emergency vehicles comprise ambulance, fire truck and start the police car of warning lamp.
6. the control method of traffic lights as claimed in claim 4, is characterized in that, also comprises and to other crossings, sends the notification message that this direction is stated emergency vehicles to some extent.
7. as the control method of the traffic lights of claim 1～6 as described in arbitrarily, it is characterized in that, also comprise error correction mode of operation: when the traffic lights of certain direction being detected, be shown as the state duration that no through traffic while arriving setting value, automatically by the corresponding control signal of mode of operation one output, give each traffic lights, Bing Xiang control center sends request the request signal of maintenance.
8. as the control method of the traffic lights of claim 1～6 as described in arbitrarily, it is characterized in that, described information of road surface comprises vehicle fleet size, car speed and/or the class of vehicles of vehicle heading, each direction.
9. a traffic light control system, is characterized in that, comprising:
Information of road surface acquisition module, at predefined multiple directions Real-time Collection information of road surface;
Information of road surface analysis module, carries out data analysis for the information of road surface to gathered;
Control signal output module, for exporting corresponding control signal according to analysis result to each traffic lights, specifically comprises:
Mode of operation one:
At predetermined peak hours/period, by the corresponding control signal of set Sequential output, give each traffic lights;
When being shown as, the traffic lights of certain direction allows under current state, in data analysis, go out this direction current complete without sending a car or sending a car, the traffic lights output control signal that no through traffic to this direction, and the traffic lights output of other at least one directions is allowed to current control signal;
Mode of operation two:
At predetermined non-peak hours/period, in data analysis, going out certain direction sends a car, other directions of intersecting with this direction are current when complete without sending a car or sending a car, traffic lights output to this direction allows current control signal, to the traffic lights of other at least one directions of intersecting with this direction, exports the control signal that no through traffic;
When data analysis goes out this direction and all send a car with other at least one directions that this direction is intersected, by the corresponding control signal of mode of operation one output, give each traffic lights.
10. traffic light control system as claimed in claim 9, is characterized in that, described information of road surface comprises vehicle fleet size, car speed and/or the class of vehicles of vehicle heading, each direction.
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