CN101968930A - Crossing signal light control method - Google Patents
Crossing signal light control method Download PDFInfo
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- CN101968930A CN101968930A CN 201010529603 CN201010529603A CN101968930A CN 101968930 A CN101968930 A CN 101968930A CN 201010529603 CN201010529603 CN 201010529603 CN 201010529603 A CN201010529603 A CN 201010529603A CN 101968930 A CN101968930 A CN 101968930A
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Abstract
The invention discloses a crossing signal light control method comprising the following steps of: firstly determining the lighting time of a yellow light and a red light by setting yellow light time and red light time, lengthening green light time step length and prolonging minimum headway time; then acquiring variable initial green light time and prolonged green light time by detecting the headway time, whether vehicles pass through a crossing or not and the number of the vehicles accumulated at the crossing; and regulating the light time of a green light by controlling the variable initial green light time and the prolonged green light time. The crossing signal light control method changes the lighting time of the green light according to the flow demand and the traffic flow density of an access road of each crossing by controlling the variable initial green light time and the prolonged green light time and can dynamically regulate the prolonged green light time according to the arrival of the vehicles and the headway time, thereby instantaneously responding actual traffic demand, reducing the waiting time of the vehicles, effectively enhancing the use efficiency of the green light, improving the utilization ratio of split green ratio and decreasing the delay.
Description
Technical field
The present invention relates to technical field of traffic control, particularly relate to a kind of signal lamp control method based on the crossing induced signal.
Background technology
Traffic flow closely-related crossing in urban core district more and more needs to adopt the area networking coordinated control system, but, in magnitudes of traffic flow such as suburb, high-tech parks is not the very big crossing that the trunk roads branch road intersects, the secondary distributor road branch road intersects, the networking control expense is too high, and timing controlled can cause the waste of signal lamp service efficiency again.A lot of cities tend to take induction control.Induction control overcome timing controlled to transport need can't real-time response deficiency, can adapt to the random variation of transport need to a certain extent.
Induction control can be divided into two kinds from embodiment.
(1) half induction control is applicable to that usually trunk roads and branch road intersect the situation that the branch road flow is very little.At this moment, detecting device is installed on the branch road, and during work, trunk roads are kept long green light phase, and branch road is a red light phase.It must be that detecting device has detected vehicle and arrives that (perhaps being accumulated to certain numerical value) and trunk roads are minimum have been finished two conditions when green and satisfy simultaneously that branch road will obtain green light signals.
(2) full induction control is applicable to that flow is not that very big secondary distributor road and secondary distributor road intersects, perhaps the crossing crossing of branch road and branch road.Usually installation and measuring device all on the entrance driveway of crossing carries out signal controlling according to the transport need of all entrance driveway.Its phase transition condition is: detecting device does not detect vehicle and arrives in a period of time, and when accumulative total reached this phase place maximum green, perhaps the crucial phase place vehicle of subtend arrived and surpasses certain threshold value and this phase place reaches minimum green light duration.
No matter be any induction control mode,, caused the increase that the split utilization rate is low and signal is incured loss through delay, increased the pressure of traffic flow because the single and variable amplitude that green light is kept of detection signal is little.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the problem of the low and increase that signal is incured loss through delay of split utilization rate in the prior art, a kind of crossing induced signal based on flux density is provided, thereby real-time change according to traffic flow, adjust the signal phase timing, improve the utilization rate of split and reduce the signal lamp control method of incuring loss through delay.
The present invention solves above-mentioned technical matters by following technical proposals:
The invention provides a kind of intersection signal lamp control method, comprise step at least:
S
101, set yellow time, red time, prolongation green time step-length and minimum time headway;
S
102, light amber light, and the time of lighting is yellow time;
S
103, point sends out a warning, and the time of lighting is red time;
S
104, obtain variable initial green light time;
S
105, point gives a green light, and the time of lighting is variable initial green light time;
S
106, prolong lighting the time of green light, time expand, is for prolonging the green time step-length;
S
107, detect and in described prolongation green time step-length, whether to have vehicle to pass through the crossing, if testing result is for being then to return step S
106, if testing result then enters step S for not
108
S
108, whether detect the time headway of vehicle and this time headway greater than minimum time headway, if testing result is for being then to return step S
102, if testing result then enters step S for not
109
S
109, prolong lighting the time of green light, time expand is a time headway, and returns step S
108
Preferably, at step S
101In further comprising the steps of: set minimum green time, maximum green time and vehicle by the average duration in crossing.
Preferably, at step S
104In further comprising the steps of: detect the vehicle number of crossing accumulation, and obtain described variable initial green light time by following formula:
T
ig?=?T
average?*?N
Wherein, T
IgBe variable initial green light time, T
AverageFor vehicle passes through the average duration in crossing, N is the vehicle number of crossing accumulation.
Preferably, at step S
104In further comprising the steps of: S
1041, whether detect described variable initial green light time less than minimum green time, if testing result is for being then to return step S
103, if testing result then enters step S for not
1042S
1042, whether detect described variable initial green light time greater than maximum green time, if testing result for being, then gives a green light, and the time of lighting be maximum green time, return step S then
102, if testing result then enters step S for not
105
Preferably, at step S
105In further comprising the steps of: the record green light is lighted T.T., and wherein this green light duration of lighting T.T. is the duration of this variable initial green light time.
Preferably, at step S
106In further comprising the steps of: light in T.T. at described green light and to add described prolongation green time step-length, detect described green light then and whether light T.T., if testing result is for being then to return step S greater than maximum green time
102, if testing result then enters step S for not
107
Preferably, at step S
109In further comprising the steps of: light at described green light and to add time headway in T.T., detect this green light then and whether light T.T., if testing result is for being then to return step S greater than maximum green time
102
Positive progressive effect of the present invention is:
Signal lamp control method provided by the invention can be according to the traffic demand and the traffic flow density in each crossing inlet road, automatically calculate and obtain the initial green light duration of phase place, and prolonging green time can dynamically adjust according to the arrival and the time headway of vehicle, thereby immediately respond the actual traffic demand, reduced the vehicle stand-by period, effectively improved the service efficiency of green light, improved the utilization rate of split and reduced delay.
The vehicle number of the crossing accumulation in the technique scheme, time headway, vehicle are used for characterizing " traffic demand " and " traffic flow density " by technical parameters such as average duration in crossing and minimum time headways.
Description of drawings
Fig. 1 is the schematic flow sheet of method one specific embodiment of the present invention.
Embodiment
Provide the present invention's one specific embodiment below in conjunction with accompanying drawing, to describe technical scheme of the present invention and beneficial effect in detail.
In the present invention's one specific embodiment, may further comprise the steps as shown in Figure 1.
Step 100(is the S in the claim
101), in changing of traffic lights, set minimum green time T in advance
Gmin, maximum green time T
Gmax, yellow time T
y, red time T
r, prolong green time step-length T
b, minimum time headway T
GapminAnd vehicle is by the average duration T in crossing
Average
Step 101(is the S in the claim
102), light the amber light in the signal lamp, and the time of lighting of this amber light is yellow time T
y
Step 102(is the S in the claim
103), light the red light in the signal lamp, and the time of lighting of this red light is red time T
r
Step 103(is the S in the claim
104), changing of traffic lights detects the vehicle number N of crossing accumulation, and calculates the variable initial green light time of acquisition by following formula:
T
ig?=?T
average?*?N
T wherein
IgBe variable initial green light time, T
AverageFor vehicle passes through the average duration in crossing, N is the vehicle number of crossing accumulation.
Step 104(is the S in the claim
1041), changing of traffic lights detects variable initial green light time T
IgWhether less than minimum green time T
Gmin, if testing result is for being then to return step 102.
Step 106(is the S in the claim
1042), point gives a green light, and the time of lighting is maximum green time T
Gmax, return step 101 then.
Step 107(is the S in the claim
105), light the green light in the signal lamp, and the value of the time of lighting of this green light equals variable initial green light time T
IgValue, and the record green light light T.T. T
All, wherein make this green light light T.T. T
AllBe this variable initial green light time T
Ig
Step 110(is the S in the claim
107), detect at this prolongation green time step-length T
bIn whether have vehicle to pass through the crossing, if testing result is for being then to return step 108.
S in the step 111(claim
108), the time headway T of detection vehicle
GapAnd this time headway T
GapWhether greater than minimum time headway T
Gapmin, if testing result is for being then to return step 101.
Step 112(is the S in the claim
109), prolonging lighting the time of green light, time expand is time headway T
GapTime.Light T.T. T at green light
AllThe middle time headway T that adds
Gap, detect this green light then and light T.T. T
AllWhether greater than maximum green time T
Gmax, if testing result for being, is then returned step 101, otherwise is returned step 111.
In sum, the signal lamp control method of the crossing induced signal based on flux density of the present invention can be according to the traffic demand and the traffic flow density in each crossing inlet road, automatically calculate the initial green light duration of phase place, and prolonging green time can dynamically adjust according to the arrival and the time headway of vehicle, thereby the response transport need has reduced the vehicle stand-by period.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (7)
1. an intersection signal lamp control method is characterized in that, this intersection signal lamp control method may further comprise the steps at least:
S
101, set yellow time, red time, prolongation green time step-length and minimum time headway;
S
102, light amber light, and the time of lighting is described yellow time;
S
103, point sends out a warning, and the time of lighting is described red time;
S
104, obtain variable initial green light time;
S
105, point gives a green light, and the time of lighting is variable initial green light time;
S
106, prolong lighting the time of green light, time expand is described prolongation green time step-length;
S
107, detect and in described prolongation green time step-length, whether to have vehicle to pass through the crossing, if testing result is for being then to return step S
106, if testing result then enters step S for not
108
S
108, whether detect the time headway of vehicle and this time headway greater than minimum time headway, if testing result is for being then to return step S
102, if testing result then enters step S for not
109
S
109, prolong lighting the time of green light, time expand is a time headway, and returns step S
108
2. intersection signal lamp control method as claimed in claim 1 is characterized in that, at step S
101In further comprising the steps of:
Set minimum green time, maximum green time and vehicle by the average duration in crossing.
3. intersection signal lamp control method as claimed in claim 2 is characterized in that, at step S
104In further comprising the steps of:
Detect the vehicle number of crossing accumulation, and obtain out described variable initial green light time by following formula:
T
ig?=?T
average?*?N
Wherein, T
IgBe variable initial green light time, T
AverageFor vehicle passes through the average duration in crossing, N is the vehicle number of crossing accumulation.
4. intersection signal lamp control method as claimed in claim 3 is characterized in that, at step S
104In further comprising the steps of:
S
1041, whether detect described variable initial green light time less than minimum green time, if testing result is for being then to return step S
103, if testing result then enters step S for not
1042
S
1042, whether detect described variable initial green light time greater than maximum green time, if testing result for being, then gives a green light, and the time of lighting be maximum green time, return step S then
102, if testing result then enters step S for not
105
5. intersection signal lamp control method as claimed in claim 2 is characterized in that, at step S
105In further comprising the steps of:
The record green light is lighted T.T., and wherein this green light is lighted the duration of the duration of T.T. for this variable initial green light time.
6. intersection signal lamp control method as claimed in claim 5 is characterized in that, at step S
106In further comprising the steps of:
Light in T.T. at described green light and to add described prolongation green time step-length, detect described green light then and whether light T.T., if testing result is for being then to return step S greater than maximum green time
102, if testing result then enters step S for not
107
7. intersection signal lamp control method as claimed in claim 6 is characterized in that, at step S
109In further comprising the steps of:
Light in T.T. at described green light and to add detected time headway, detect this green light then and whether light T.T., if testing result is for being then to return step S greater than maximum green time
102
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105296032A CN101968930B (en) | 2010-11-02 | 2010-11-02 | Crossing signal light control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105296032A CN101968930B (en) | 2010-11-02 | 2010-11-02 | Crossing signal light control method |
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| Publication Number | Publication Date |
|---|---|
| CN101968930A true CN101968930A (en) | 2011-02-09 |
| CN101968930B CN101968930B (en) | 2012-06-27 |
Family
ID=43548077
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|---|---|---|---|
| CN2010105296032A Active CN101968930B (en) | 2010-11-02 | 2010-11-02 | Crossing signal light control method |
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| CN102254439A (en) * | 2011-07-12 | 2011-11-23 | 北京世纪高通科技有限公司 | Method and device for acquiring distributed duration of traffic signal lamp |
| RU2454726C1 (en) * | 2011-03-03 | 2012-06-27 | Игорь Юрьевич Мацур | Method of controlling movement of vehicles and apparatus for realising said method |
| CN104700633A (en) * | 2015-03-12 | 2015-06-10 | 深圳市金迈高智能科技有限公司 | Intelligent traffic control method and device |
| CN104794910A (en) * | 2015-04-27 | 2015-07-22 | 江苏物联网研究发展中心 | Queuing length based fully-actuated signal control method with phase jumping function |
| CN104933874A (en) * | 2015-06-16 | 2015-09-23 | 青岛海信网络科技股份有限公司 | Traffic light self-adaptive control method and device |
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| CN107316482A (en) * | 2017-08-23 | 2017-11-03 | 庄秋瑶 | Intelligent mobile traffic lights |
| CN108648472A (en) * | 2018-03-23 | 2018-10-12 | 公安部交通管理科学研究所 | A kind of maximum green setting method of signalized crossing and system |
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| CN102254439A (en) * | 2011-07-12 | 2011-11-23 | 北京世纪高通科技有限公司 | Method and device for acquiring distributed duration of traffic signal lamp |
| WO2013007075A1 (en) * | 2011-07-12 | 2013-01-17 | 北京世纪高通科技有限公司 | Method and device for acquiring distributed duration for traffic lights |
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| CN105303849A (en) * | 2015-09-15 | 2016-02-03 | 上海应用技术学院 | Inductive arterial road coordination control method based on electronic tag |
| CN105957371A (en) * | 2016-06-21 | 2016-09-21 | 同济大学 | Control apparatus, and traffic light control method and system applied thereby |
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| CN108648472B (en) * | 2018-03-23 | 2021-04-06 | 公安部交通管理科学研究所 | Method and system for setting maximum green of signal control intersection |
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|---|---|
| CN101968930B (en) | 2012-06-27 |
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