CN101123041A - A traffic signal lamp control method and traffic signal lamp system - Google Patents
A traffic signal lamp control method and traffic signal lamp system Download PDFInfo
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- CN101123041A CN101123041A CNA2006100620974A CN200610062097A CN101123041A CN 101123041 A CN101123041 A CN 101123041A CN A2006100620974 A CNA2006100620974 A CN A2006100620974A CN 200610062097 A CN200610062097 A CN 200610062097A CN 101123041 A CN101123041 A CN 101123041A
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Abstract
The invention discloses a traffic light control method. A traffic flow detector is used for real-time detecting traffic flow signal at the exit of a crossing, and when the exit is identified in jam status, the signal lights for coming to the crossing are all turned red, until the jam status is released. The invention also discloses a traffic light system. The invention is used for real-time detecting vehicle status at the exit of a crossing, and when the exit is in jam status, the invention prevents vehicle from further moving to the exit. The invention prevents vehicles from jamming the whole crossing, and ensures normal running of vehicles in other directions.
Description
Technical field
The present invention relates to the control method and the system of traffic lights, particularly regulate a kind of method for controlling traffic signal lights and the traffic signal lamp system of traffic signals modulating signal according to the output signal of vehicle Flow Detection device.
Background technology
More advanced traffic signal controlling machine all has the induction control function at present, its principle is the vehicle flowrate signal according to the detected corresponding porch of wagon detector (ground induction coil, video detector), the green time of the current phase place of real-time regulated reaches the purpose that signal timing dial and vehicle flowrate are complementary.For example wagon detector detects certain porch, crossroad vehicle flowrate relatively the vehicle flowrate of other porch is big, then prolongs green light that should the porch is lighted the time.Because this technology is to regulate green time, therefore can be called green induction technology.Along with the increase of urban motor vehicle, some cities the crossing congestion phenomenon can occur in rush-hour, and vehicle is parked in the crossing, cause whole crossing congestion.
For example, a is arranged, connection a is set in two crossroads of b, and the road at b crossing is a North and South direction, and a crossing is on the north at b crossing.Owing to a crossing south orientation clearance ability reason, vehicle queue is until the outlet of a crossing direction is arrived at the b crossing, and south orientation clearance vehicle in b crossing will be parked in the b crossing during green light; When the green light of turning left when west, b crossing is bright, the blocking-up of b crossing north orientation will being sent a car of this track vehicle.So whole crossing will block up, and cause the paralysis of whole crossing, the control strategy of teleseme can not address this problem at present, can only solve by artificial comand way.
Summary of the invention
The object of the present invention is to provide a kind of method for controlling traffic signal lights and traffic signal lamp system that solves the prior art problem.
The technical scheme of a kind of method for controlling traffic signal lights of the present invention is: a kind of method for controlling traffic signal lights, in this method, the vehicle Flow Detection device detects the vehicle flowrate signal in exit, crossroad in real time, when judging that above-mentioned exit is in congestion status, the signal lamp that then drives towards this Way out transfers red light to, removes up to above-mentioned exit congestion status.
Wherein, described vehicle Flow Detection device can comprise a kind of in following at least: coil checker, video detector, ultrasonic detector, microwave detector, magnetic detector, initiatively passive infrared detecting device, piezoelectric detector, audio detection device.
As an improvement of the present invention, the position that described vehicle Flow Detection device detects is relevant with inflow point's number of lanes, the crossroad size in described exit number of lanes, exit, corresponding described crossroad with the distance of corresponding crossroad egress line.Make that after green light that should the exit is transferred to red light having entered the mouth from the crossroad, enter the crossroad and drive towards the vehicle in this exit can be all by described egress line.
In the inventive method, described judgement outlet in a method of congestion status is everywhere: this exit speed of a motor vehicle is less than first setting value.Another method is: this exit down time is greater than second setting value.Certainly, also can adopt above-mentioned two kinds of methods to judge whether the exit is in congestion status simultaneously.
The present invention also provides a kind of traffic signal lamp system, comprises traffic lights, vehicle Flow Detection device and traffic controller, and described traffic lights link to each other with traffic controller with the vehicle Flow Detection device; Wherein, described vehicle Flow Detection device is arranged on the exit, crossroad.The position that described vehicle Flow Detection device detects is relevant with inflow point's number of lanes, the crossroad size in described exit number of lanes, exit, corresponding described crossroad with the distance of corresponding crossroad egress line.Make when congestion status occurs on the road surface in corresponding exit, and after green light that should the exit transferred to red light that having entered the mouth from the crossroad, enter the crossroad and drive towards the vehicle in this exit can be all by described egress line.
The present invention is by detecting in real time exit, crossroad vehicle-state, when finding that the exit is in when blocking up, stops vehicle further to drive towards this Way out immediately, prevents that vehicle from stopping up whole crossing, guaranteed the normal operation of other direction vehicle.Overcome the prejudice of prior art.
Description of drawings
Fig. 1 is the structural representation of a kind of traffic signal lamp system of the present invention.
Fig. 2 is the method flow diagram of a kind of method for controlling traffic signal lights of the present invention.
Embodiment
The present invention is further elaborated with specific embodiment with reference to the accompanying drawings below.
A kind of traffic signal lamp system of the present invention comprises traffic lights, vehicle Flow Detection device and traffic controller, has only shown the position of vehicle flowrate monitor in the accompanying drawing 1, shown in the square frame of figure acceptance of the bid 1.Traffic lights and traffic controller can be provided with as the case may be.Wherein, traffic lights all link to each other with traffic controller with the vehicle Flow Detection device, the control of collection of letters signal lamp controller.The vehicle Flow Detection device can be coil checker, video detector, ultrasonic detector, microwave detector, magnetic detector, the initiatively a kind of or set in passive infrared detecting device, piezoelectric detector and the audio detection device, as long as can detect the information of vehicle flowrate on the road in real time and send to traffic controller.
Among the present invention, the vehicle Flow Detection device is arranged on each position, exit of crossroad, its distance with corresponding exit egress line (also being to go into place, crossroad stop line with road is enterprising) is relevant with following parameters: corresponding exit number of lanes, and to inflow point's number of lanes, crossroad size, average length of car and following distance that should the exit.With south orientation outlet among Fig. 1 is example, and inflow point's number of track-lines in above-mentioned corresponding exit comprises: west south right-turn lane number, north orientation south Through Lane number, east orientation south left turn lane number.
As shown in Figure 2, the concrete steps of method for controlling traffic signal lights of the present invention are:
S1, traffic lights normally move;
S2, vehicle Flow Detection device detect the vehicle flowrate signal in exit, crossroad in real time;
S3 is when judging that the above-mentioned exit speed of a motor vehicle, promptly differentiates this exit and be in congestion status, execution in step S4, otherwise execution in step S1 during greater than T1 less than V1 or this exit down time; Wherein, V1 and T1 value rule of thumb.
S4 enters red light phase to green light that should the exit at once, removes up to this exit congestion status.
As an improvement of the present invention, also comprise step after the step S3:
S31 judges whether current phase place has craspedodrome or left-hand rotation or right-hand rotation vehicle to drive towards this outlet, if having then execution in step S4, otherwise execution in step S1;
South orientation exit with crossroad among Fig. 1 is an example, the position of vehicle Flow Detection device setting makes when this position direction southward phenomenon that got congestion, and the road between itself and the egress line is not when also getting congestion, traffic controller can transmit a signal to traffic lights, control becomes red light (being the constant of red light) to the signal lamp of all directions that should the exit by green light, the vehicle of having turned right then from the crossroad west south, the vehicle that turns left in vehicle of keeping straight in north orientation south and east orientation south can be all by the south orientation egress line, stop on the south the south orientation egress line, can not be blocked in the crossing.Guarantee the normal operation of other direction vehicle, overcome the prejudice of prior art.
Claims (7)
1. method for controlling traffic signal lights, it is characterized in that: the vehicle Flow Detection device detects the vehicle flowrate signal in exit, crossroad in real time, when judging that above-mentioned exit is in congestion status, the signal lamp that then drives towards this Way out transfers red light to, removes up to above-mentioned exit congestion status.
2. method for controlling traffic signal lights according to claim 1, it is characterized in that described vehicle Flow Detection device comprises a kind of in following at least: coil checker, video detector, ultrasonic detector, microwave detector, magnetic detector, initiatively passive infrared detecting device, piezoelectric detector, audio detection device.
3. method for controlling traffic signal lights according to claim 1 is characterized in that: the position that described vehicle Flow Detection device detects is relevant with inflow point's number of lanes, the crossroad size in described exit number of lanes, exit, corresponding described crossroad with the distance of corresponding crossroad egress line.
4. method for controlling traffic signal lights according to claim 1 is characterized in that, described judgement outlet in the method for congestion status is everywhere: this exit speed of a motor vehicle is less than first setting value.
5. according to the described any method for controlling traffic signal lights of claim 1 to 4, it is characterized in that described judgement outlet in the method for congestion status is everywhere: this exit down time is greater than second setting value.
6. a traffic signal lamp system comprises traffic lights, vehicle Flow Detection device and traffic controller, and described traffic lights link to each other with traffic controller with the vehicle Flow Detection device; It is characterized in that: described vehicle Flow Detection device is arranged on the exit, crossroad.
7. traffic signal lamp system according to claim 6 is characterized in that: the position that described vehicle Flow Detection device detects is relevant with inflow point's number of lanes, the crossroad size in described exit number of lanes, exit, corresponding described crossroad with the distance of corresponding crossroad egress line.
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| CN200610062097A CN100592351C (en) | 2006-08-10 | 2006-08-10 | A traffic signal lamp control method and traffic signal lamp system |
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| CN200610062097A CN100592351C (en) | 2006-08-10 | 2006-08-10 | A traffic signal lamp control method and traffic signal lamp system |
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