CN114299729A - Signal control method, system and computer storage medium based on intelligent traffic - Google Patents
Signal control method, system and computer storage medium based on intelligent traffic Download PDFInfo
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Abstract
The invention relates to the technical field of intelligent traffic, in particular to a signal control method, a signal control system and a computer storage medium based on intelligent traffic, wherein the method comprises the steps of acquiring the traffic flow of a current intersection; analyzing the traffic flow according to the priority order to form a first priority traffic flow; judging the first priority traffic flow according to the maximum queuing length to obtain an adjusting lane and an optimizing lane; acquiring the real-time queuing length of the adjusted lane; and time judgment is carried out on the real-time queuing length of the adjusting lane according to the corresponding optimized queuing length, if the real-time queuing length of the adjusting lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, the traffic signal lamp of the adjusting lane is switched from green to red, the traffic signal lamp of the optimizing lane is switched from red to green, and the green duration time of the traffic signal lamp of the optimizing lane is the green remaining time of the traffic signal lamp of the adjusting lane. The invention is helpful for improving the traffic efficiency of the intersection.
Description
Technical Field
The present invention relates to the field of intelligent traffic technology, and in particular, to a signal control method, system and computer storage medium based on intelligent traffic.
Background
The intelligent traffic effectively and comprehensively applies advanced scientific technology to traffic transportation and service control, and through intelligent traffic signal control, the traffic efficiency of the intersection can be improved, the average idle time of the vehicle intersection is reduced, the exhaust emission is reduced, the oil consumption of the automobile is reduced, and the happiness index of people is improved.
At present, in the urban center of large and medium-sized cities in China, the number of vehicles carried by roads in rush hours is too saturated, particularly in the peak time period of getting on and off duty every day, the traffic jam condition is very serious, when one direction meets the traffic flow rush hours, the situation that the vehicles in the direction are full and still turn red is caused, and the situation that the vehicles in the other direction do not pass but still turn green is caused easily, so that the resource distribution is unreasonable, unnecessary traffic jam is caused, the vehicle running is delayed, and the passing efficiency of intersections is poor.
Disclosure of Invention
In order to solve the problems of vehicle running delay and poor crossing traffic efficiency, the invention provides a signal control method, a signal control system and a computer storage medium based on intelligent traffic.
The invention provides a signal control method based on intelligent traffic, which adopts the following technical scheme:
the signal control method based on intelligent traffic comprises the following steps:
acquiring the traffic flow of the current intersection;
analyzing the traffic flow according to a preset priority order to form a first priority traffic flow, wherein the first priority traffic flow comprises traffic flow information of different lanes in corresponding traffic flow directions;
judging the traffic information in the first priority traffic flow according to the corresponding preset maximum queuing length, if the traffic information of a certain straight lane in the first priority traffic flow is smaller than the corresponding maximum queuing length, and the traffic information of an opposite straight lane and an opposite left-turn lane are both larger than the corresponding maximum queuing length, marking the straight lane of which the traffic information is smaller than the corresponding maximum queuing length as an adjustment lane, and marking the left-turn lane of which the traffic information is larger than the corresponding maximum queuing length as an optimization lane;
acquiring the real-time queuing length of the adjusted lane;
and carrying out time judgment on the real-time queuing length of the adjusting lane according to the corresponding preset optimized queuing length, if the real-time queuing length of the adjusting lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, switching the traffic signal lamp of the adjusting lane from green to red, and switching the traffic signal lamp of the optimizing lane from red to green, wherein the green duration time of the traffic signal lamp of the optimizing lane is the green remaining time of the traffic signal lamp of the adjusting lane.
By adopting the technical scheme, the green time of other idle lanes is distributed to the lanes with larger traffic flow during the rush hour of commuting, so that the passing rate of vehicles at the intersection is increased, the passing efficiency of the intersection is improved, the problems of delay of vehicle running and poor passing efficiency of the intersection are improved, and the traffic pressure is relieved.
After switching the traffic lights of the adjusted lanes from green to red and switching the traffic lights of the optimized lanes from red to green, the method further comprises:
analyzing the traffic flow according to a preset priority order to form a second priority traffic flow;
analyzing and judging the second priority traffic flow according to the corresponding preset maximum queuing length, and if the traffic flow information of the lanes in the second priority traffic flow is smaller than the corresponding maximum queuing length, extracting the maximum traffic flow information in the second priority traffic flow to form a judgment lane, wherein the judgment lane comprises the direction information of the corresponding lane and the queuing length of the corresponding lane;
marking the corresponding straight lane of the adjusted lane as a congested lane;
and calculating the judged lane according to a preset green light delay formula to obtain green light delay time, wherein the green light delay time is increased by the original green light release time of the jammed lane.
By adopting the technical scheme, the green light release time of the jammed lanes is properly increased according to the traffic flow of the lanes in other directions, and the improvement of the vehicle passing number of the jammed lanes is facilitated, so that the improvement of the vehicle passing rate at the intersection is facilitated.
Optionally, the green light delay formula is y ═ b-ax ], where y is the green light delay time, b is the preset longest green light delay time, a is a threshold of the preset vehicle queue length of the corresponding lane, and x is the queue length of the corresponding lane at the current time node.
By adopting the technical scheme, the green light delay time increased by the jammed lane can be determined along with the traffic flow of lanes in other directions, and the traffic rate of the jammed lane is improved, so that the problems of vehicle running delay and poor traffic efficiency at intersections are improved.
Optionally, the calculating the judged lane according to a preset green light delay formula to obtain green light delay time, and after the green light delay time is increased by the original green light release time of the congested lane, the method further includes:
acquiring the real-time queuing length of the congested lane;
and carrying out time judgment on the real-time queuing length according to the corresponding preset optimized queuing length, and if the real-time queuing length of the congested lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, switching the traffic signal lamp of the congested lane from green to red.
By adopting the technical scheme, after the traffic flow of the jammed lane is reduced, the green delay time of the jammed lane can be automatically ended and enters the next phase, so that the traffic flow passing efficiency of the intersection is improved.
Optionally, after switching the traffic light of the adjusted lane from green to red and switching the traffic light of the optimized lane from red to green, the method further includes:
marking the opposite left-turn lane of the optimized lane as a contrast lane;
acquiring the real-time queuing length of the contrast lane;
and time judgment is carried out on the real-time queuing length of the comparison lane according to the corresponding preset optimized queuing length, if the real-time queuing length of the comparison lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, the traffic signal lamp of the comparison lane is switched from green to red, the traffic signal lamp of the traffic jam lane is switched from red to green, and the green duration time of the traffic signal lamp of the traffic jam lane is the green remaining time of the traffic signal lamp of the adjustment lane.
By adopting the technical scheme, when vehicles turn left in the congestion direction, the release time of the left-turn vehicle coupling can be properly reduced, so that the release rate of straight-going vehicles in the congestion direction is increased, and the vehicle traffic rate at the intersection is improved.
The second aspect of the invention provides a signal control system based on intelligent traffic, which adopts the following technical scheme:
the road test module is used for acquiring the traffic flow of the current intersection and acquiring the real-time queuing length of the adjusted lane;
the storage module is used for storing a preset priority sequence, a preset maximum queuing length and a preset optimized queuing length;
the traffic control module is used for controlling the light color and time of the traffic signal lamp;
a processing module for performing the following processes,
analyzing the traffic flow acquired by the road measurement module according to the priority sequence preset in the storage module to form a first priority traffic flow;
judging traffic flow information in a first priority traffic flow according to a preset maximum queuing length in the storage module, if the traffic flow information of a certain straight lane in the first priority traffic flow is smaller than the corresponding maximum queuing length, and the traffic flow information of an opposite straight lane and an opposite left-turning lane are both larger than the corresponding maximum queuing length, marking the straight lane of which the traffic flow information is smaller than the corresponding maximum queuing length as an adjustment lane, and marking the left-turning lane of which the traffic flow information is larger than the corresponding maximum queuing length as an optimization lane;
and time judgment is carried out on the real-time queuing length of the adjusting lane according to the optimized queuing length preset in the storage module, if the real-time queuing length of the adjusting lane is shorter than the duration time of the corresponding optimized queuing length and exceeds one second, the traffic signal lamp of the adjusting lane is switched from green to red through a traffic control module, and the traffic signal lamp of the optimized lane is switched from red to green.
By adopting the technical scheme, the processing module analyzes and processes the intersection traffic flow acquired by the road measuring unit through the rules and the threshold values pre-stored by the storage module, and displays the operation processing result through the traffic control module, thereby being beneficial to improving the intelligent degree of the traffic intersection and the passing efficiency of the intersection vehicles.
The third aspect of the present invention provides an intelligent terminal, which adopts the following technical scheme:
an intelligent terminal comprising a memory and a processor, said memory having stored thereon a computer program that can be loaded by the processor and that executes the method according to the first aspect.
By adopting the technical scheme, after the actual traffic flow information of the intersection is obtained, analysis and processing are carried out, so that the vehicle release time is reasonably controlled, and the problems of vehicle running delay and poor intersection passing efficiency are improved.
The fourth aspect of the present invention provides a computer-readable storage medium, which adopts the following technical solutions:
a computer readable storage medium comprising a computer program stored thereon which is loadable by a processor and adapted to carry out the method of the first aspect.
By adopting the technical scheme, the computer readable storage medium can store corresponding programs, can analyze and process the traffic flow information at the road junction, and controls the passing time of the lane through the processor, thereby being beneficial to improving the problems of vehicle running delay and poor passing efficiency at the road junction.
In summary, the invention includes at least one of the following beneficial technical effects:
1. in the rush hour of going to and going from work, the green light time of other idle lanes is divided into lanes with larger traffic flow, which is beneficial to increasing the passing rate of vehicles at the intersection and improving the passing efficiency of the intersection, thereby being beneficial to improving the problems of vehicle running delay and poor passing efficiency of the intersection and relieving traffic pressure;
2. according to the traffic flow of the lanes in other directions, the green light release time of the congested lanes is properly increased, and the traffic quantity of the congested lanes is favorably increased, so that the traffic rate of the intersection is favorably increased.
Drawings
Fig. 1 is a schematic flow chart of a signal control method based on intelligent transportation according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating a method for increasing green time of a congested lane according to an embodiment of the present invention.
FIG. 3 is a flowchart illustrating a method for increasing a green light traffic rate of a congested lane according to an embodiment of the present invention.
Fig. 4 is a block diagram of a signal control system based on intelligent transportation according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to figures 1-4.
The embodiment of the invention discloses a signal control method, a system and a computer storage medium based on intelligent traffic. Referring to fig. 1, the signal control method based on intelligent traffic includes:
s100: and obtaining the traffic flow of the current intersection.
Specifically, the traffic flow includes vehicle queue lengths of different lanes at the current intersection and corresponding lane information, where the vehicle queue length of each lane is a value obtained by the corresponding lane when the lane corresponds to a red light, and the obtaining mode may adopt a video detection mode or a radar detection mode.
S200: and analyzing the traffic flow according to a preset priority order to form a first priority traffic flow and a second priority traffic flow.
Specifically, the preset priority order is set according to the previous traffic flow conditions at the intersection, wherein the first priority traffic flow is the traffic flow information of all lanes in the two directions with the largest traffic flow at the current intersection, and the second priority traffic flow is the traffic flow information of all lanes in the other two directions with the largest traffic flow at the current intersection. For example, if the traffic flow at the current intersection is large in the north-south direction during the peak period, the first priority traffic flow is the traffic flow information of all the straight lanes and the left-turn lanes in the north-south direction, and the second priority traffic flow is the traffic flow information of all the straight lanes and the left-turn lanes in the east-west direction.
S300: judging the traffic information in the first priority traffic flow according to the corresponding preset maximum queuing length, and if the traffic information of a certain straight lane in the first priority traffic flow is smaller than the corresponding maximum queuing length and the traffic information of an opposite straight lane and an opposite left-turning lane are both larger than the corresponding maximum queuing length, jumping to S400; otherwise, the process is finished.
The maximum queuing length of each lane is different due to the fact that the traffic flow of the lanes in each direction is different.
S400: and marking the straight lane with the traffic flow information smaller than the corresponding maximum queuing length in the first priority traffic flow as an adjusting lane, and marking the left-turning lane with the traffic flow information larger than the corresponding maximum queuing length in the first priority traffic flow as an optimizing lane.
S500: and acquiring the real-time queuing length of the adjusted lane.
S600: judging the time of the real-time queuing length of the adjusting lane according to the corresponding optimized queuing length, judging the time of the real-time queuing length of the comparison lane, and jumping to S700 if the duration time of the real-time queuing length of the comparison lane is less than the corresponding optimized queuing length and exceeds one second; otherwise, the process is finished.
And the optimized queuing length of each lane is smaller than the corresponding maximum queuing length.
S700: and switching the traffic signal lamp of the adjusted lane from green to red, and switching the traffic signal lamp of the optimized lane from red to green, wherein the green duration of the traffic signal lamp of the optimized lane is the green remaining time of the traffic signal lamp of the adjusted lane.
In order to increase the vehicle traffic in the congestion direction, the method further includes, after S700 and with reference to fig. 2:
s11: analyzing and judging the second priority traffic flow according to the corresponding preset maximum queuing length, and if the traffic flow information of the lanes in the second priority traffic flow is smaller than the corresponding maximum queuing length, jumping to S12; otherwise, the process is finished.
S12: and extracting the maximum traffic flow information in the second priority traffic flow to form a judgment lane.
And judging whether the lane contains the direction information of the corresponding lane and the queuing length of the corresponding lane.
S13: and marking the corresponding straight lane of the adjusted lane as a congested lane.
S14: and calculating the judged lane according to a preset green light delay formula to obtain green light delay time.
Specifically, the green light delay formula is y ═ b-ax, where y is green light delay time, b is preset longest green light delay time, a is a preset vehicle queue length threshold value of the corresponding lane, that is, the maximum queue length of the corresponding lane, and x is the queue length of the corresponding lane at the current time node, where the green light delay time is increased by the original green light release time of the congested lane.
S15: and acquiring the real-time queuing length of the congested lane.
S16: judging the time of the real-time queuing length according to the corresponding preset optimized queuing length, and if the real-time queuing length of the congested lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, jumping to S17; otherwise, the process is finished.
S17: and switching the traffic light of the congested lane from green to red.
In order to improve the vehicle passing efficiency at the intersection, after S17, referring to fig. 3, the method further includes:
s21: the opposite left-turn lane of the optimized lane is marked as the contrast lane.
S22: and acquiring the real-time queuing length of the contrast lane.
S23: and (4) performing time judgment on the real-time queuing length of the comparison lane according to the corresponding preset optimized queuing length, and if the real-time queuing length of the comparison lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, jumping to S24, otherwise ending.
S24: and switching the traffic light of the congested lane from red to green.
And the green duration of the traffic signal lamp of the congested lane is the green remaining time of the traffic signal lamp of the regulated lane.
Based on the method, the embodiment of the invention also discloses a signal control system based on intelligent traffic,
referring to fig. 4, the intelligent traffic-based signal control system includes:
the road test module is used for acquiring the traffic flow of the current intersection and acquiring the real-time queuing length of the adjusted lane;
the storage module is used for storing a preset priority sequence, a preset maximum queuing length and a preset optimized queuing length;
the traffic control module is used for controlling the light color and time of the traffic signal lamp;
a processing module for performing the following processes,
analyzing the traffic flow acquired by the road testing module according to a preset priority sequence in the storage module to form a first priority traffic flow;
judging traffic flow information in the first priority traffic flow according to the preset maximum queuing length in the storage module, if the traffic flow information of a certain straight lane in the first priority traffic flow is smaller than the corresponding maximum queuing length, and the traffic flow information of an opposite straight lane and an opposite left-turning lane are both larger than the corresponding maximum queuing length, marking the straight lane of which the traffic flow information is smaller than the corresponding maximum queuing length as an adjustment lane, and marking the left-turning lane of which the traffic flow information is larger than the corresponding maximum queuing length as an optimization lane;
and time judgment is carried out on the real-time queuing length of the adjusting lane according to the optimized queuing length preset in the storage module, if the real-time queuing length of the adjusting lane is shorter than the duration time of the corresponding optimized queuing length and exceeds one second, the traffic signal lamp of the adjusting lane is switched from green to red through the traffic control module, and the traffic signal lamp of the optimizing lane is switched from red to green.
The embodiment of the invention also discloses an intelligent terminal which comprises a memory and a processor, wherein the memory is stored with a computer program which can be loaded by the processor and can execute the big data cleaning and denoising method for the power grid.
The embodiment of the present invention further discloses a computer readable storage medium, which stores a computer program that can be loaded by a processor and execute the above big data cleaning and denoising method for a power grid, and the computer readable storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above examples are only used to illustrate the technical solutions of the present invention, and do not limit the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from these embodiments without making any inventive step, fall within the scope of the present invention.
Claims (8)
1. The signal control method based on intelligent traffic is characterized by comprising the following steps:
acquiring the traffic flow of the current intersection;
analyzing the traffic flow according to a preset priority order to form a first priority traffic flow, wherein the first priority traffic flow comprises traffic flow information of different lanes in corresponding traffic flow directions;
judging the traffic information in the first priority traffic flow according to the corresponding preset maximum queuing length, if the traffic information of a certain straight lane in the first priority traffic flow is smaller than the corresponding maximum queuing length, and the traffic information of an opposite straight lane and an opposite left-turn lane are both larger than the corresponding maximum queuing length, marking the straight lane of which the traffic information is smaller than the corresponding maximum queuing length as an adjustment lane, and marking the left-turn lane of which the traffic information is larger than the corresponding maximum queuing length as an optimization lane;
acquiring the real-time queuing length of the adjusted lane;
and carrying out time judgment on the real-time queuing length of the adjusting lane according to the corresponding preset optimized queuing length, if the real-time queuing length of the adjusting lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, switching the traffic signal lamp of the adjusting lane from green to red, and switching the traffic signal lamp of the optimizing lane from red to green, wherein the green duration time of the traffic signal lamp of the optimizing lane is the green remaining time of the traffic signal lamp of the adjusting lane.
2. The intelligent traffic-based signal control method according to claim 1, wherein after the switching the traffic signal light of the adjusted lane from green to red and the switching the traffic signal light of the optimized lane from red to green, further comprising:
analyzing the traffic flow according to a preset priority order to form a second priority traffic flow;
analyzing and judging the second priority traffic flow according to the corresponding preset maximum queuing length, and if the traffic flow information of the lanes in the second priority traffic flow is smaller than the corresponding maximum queuing length, extracting the maximum traffic flow information in the second priority traffic flow to form a judgment lane, wherein the judgment lane comprises the direction information of the corresponding lane and the queuing length of the corresponding lane;
marking the corresponding straight lane of the adjusted lane as a congested lane;
and calculating the judged lane according to a preset green light delay formula to obtain green light delay time, wherein the green light delay time is increased by the original green light release time of the jammed lane.
3. The intelligent traffic-based signal control method according to claim 2, wherein the green light delay formula is y ═ b-ax ], where y is the green light delay time, b is a preset longest green light delay time, a is a preset threshold value of vehicle queue length of the corresponding lane, and x is the queue length of the corresponding lane at the current time node.
4. The intelligent traffic-based signal control method according to claim 2, wherein the step of calculating the judged lane according to a preset green light delay formula to obtain the green light delay time, and the step of increasing the green light delay time by the original green light release time of the congested lane further comprises the step of:
acquiring the real-time queuing length of the congested lane;
and carrying out time judgment on the real-time queuing length according to the corresponding preset optimized queuing length, and if the real-time queuing length of the congested lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, switching the traffic signal lamp of the congested lane from green to red.
5. The intelligent traffic-based signal control method according to claim 4, wherein after the switching the traffic signal light of the adjusted lane from green to red and the switching the traffic signal light of the optimized lane from red to green, further comprising:
marking the opposite left-turn lane of the optimized lane as a contrast lane;
acquiring the real-time queuing length of the contrast lane;
and time judgment is carried out on the real-time queuing length of the comparison lane according to the corresponding preset optimized queuing length, if the real-time queuing length of the comparison lane is less than the duration time of the corresponding optimized queuing length and exceeds one second, the traffic signal lamp of the comparison lane is switched from green to red, the traffic signal lamp of the traffic jam lane is switched from red to green, and the green duration time of the traffic signal lamp of the traffic jam lane is the green remaining time of the traffic signal lamp of the adjustment lane.
6. The intelligent traffic-based signal control system is characterized by comprising,
the road test module is used for acquiring the traffic flow of the current intersection and acquiring the real-time queuing length of the adjusted lane;
the storage module is used for storing a preset priority sequence, a preset maximum queuing length and a preset optimized queuing length;
the traffic control module is used for controlling the light color and time of the traffic signal lamp;
a processing module for performing the following processes,
analyzing the traffic flow acquired by the road measurement module according to the priority sequence preset in the storage module to form a first priority traffic flow;
judging traffic flow information in a first priority traffic flow according to a preset maximum queuing length in the storage module, if the traffic flow information of a certain straight lane in the first priority traffic flow is smaller than the corresponding maximum queuing length, and the traffic flow information of an opposite straight lane and an opposite left-turning lane are both larger than the corresponding maximum queuing length, marking the straight lane of which the traffic flow information is smaller than the corresponding maximum queuing length as an adjustment lane, and marking the left-turning lane of which the traffic flow information is larger than the corresponding maximum queuing length as an optimization lane;
and time judgment is carried out on the real-time queuing length of the adjusting lane according to the optimized queuing length preset in the storage module, if the real-time queuing length of the adjusting lane is shorter than the duration time of the corresponding optimized queuing length and exceeds one second, the traffic signal lamp of the adjusting lane is switched from green to red through a traffic control module, and the traffic signal lamp of the optimized lane is switched from red to green.
7. An intelligent terminal, comprising a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and that executes the method according to any one of claims 1 to 5.
8. A computer-readable storage medium, in which a computer program is stored which can be loaded by a processor and which executes the method of any one of claims 1 to 5.
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