CN110969865B - Urban intelligent traffic informatization monitoring system - Google Patents
Urban intelligent traffic informatization monitoring system Download PDFInfo
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- CN110969865B CN110969865B CN201911342531.8A CN201911342531A CN110969865B CN 110969865 B CN110969865 B CN 110969865B CN 201911342531 A CN201911342531 A CN 201911342531A CN 110969865 B CN110969865 B CN 110969865B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
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- G—PHYSICS
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- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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Abstract
The invention discloses an urban intelligent traffic informatization monitoring system, which is characterized in that: the lane-changing information monitoring system comprises a lane information monitoring unit, a data storage module, a lane-changing information induction screen and a lane-changing control unit which are all connected with a data processing unit; compared with the prior art, the method can divide the current traffic condition into a plurality of grades according to the real-time traffic conditions such as the number of left-turn lanes, the number of straight lanes, the number of variable lanes and the traffic flow at the intersection, and timely adjust the lane direction of the variable lanes according to the different grades, so that the traffic flow is dredged, the congestion condition is reduced, and the traffic operation efficiency is further improved.
Description
Technical Field
The invention belongs to the technical field of intelligent traffic, and particularly relates to an urban intelligent traffic informatization monitoring system.
Background
At present, with the development of economy and the acceleration of urbanization process in China, the quantity of vehicles in China is kept increasing year by year, and the inadaptability of urban traffic transport capacity and the urbanization process is increasingly serious, which is obviously represented as a popular urban traffic jam problem in recent years. Particularly in big cities, under the condition that the quantity of motor vehicles and the road traffic volume are increased sharply, the traffic jam phenomenon of each big city is increasingly serious. Urban traffic is an important factor influencing and driving the development of the functional layout of the whole city and improving the living and traveling conditions of people, and the harm brought by urban traffic congestion, such as traffic safety threat, environmental pollution, large energy and land consumption, serious economic loss and the like, seriously influences social progress and economic development and becomes a bottleneck restricting the harmonious development of the city. Therefore, it is urgent to solve the problem of urban traffic congestion and realize the sustainable development of cities.
Therefore, how to provide a set of urban intelligent traffic information-based monitoring system capable of intelligently adjusting according to actual traffic conditions aiming at the problem of urban traffic jam, so that traffic flow is dredged in time, the jam condition is reduced, and the traffic operation efficiency is further improved, which is a problem which is urgently needed to be solved at present.
The invention content is as follows:
in order to solve the problems, the invention provides an urban intelligent traffic informatization monitoring system which is characterized by comprising the following steps: the lane-changing information monitoring system comprises a lane information monitoring unit, a data storage module, a lane-changing information induction screen and a lane-changing control unit which are all connected with a data processing unit;
the lane information monitoring unit is used for monitoring traffic flow related information of corresponding lanes in real time and transmitting data to the data processing unit in real time, and comprises a plurality of lane data sensors which are respectively arranged on a hanger or other fixed supports, wherein one lane data sensor corresponds to one lane and respectively monitors the number information of vehicles passing through the sensor of each lane in real time;
the data storage module is used for storing system operation software, a control algorithm, a control strategy and real-time monitoring data and providing a data storage function for the whole system;
the variable lane information induction screen is used for receiving instructions to display real-time prompt information related to the variable lane and inducing the traffic flow to correctly enter the lane;
the variable lane control unit is used for receiving instructions to control the specific contents of the variable lane direction electronic direction board: the left-turn and left-turn straight-running shared straight-running lane direction information comprises a plurality of variable lane direction electronic direction indicating boards which are respectively arranged above the variable lanes, so that a driver can conveniently check the direction information in time, and the variable lanes are positioned between the left-turn lanes and the straight-running lanes;
the data processing unit is used for receiving the real-time monitoring data of the lane information monitoring unit, analyzing and processing the data through a specific control algorithm and a control strategy, outputting a control signal to the variable lane information induction screen and the variable lane control unit, adjusting the lane direction in time according to the real-time traffic condition, dredging the traffic flow, reducing the congestion condition and further improving the traffic operation efficiency.
Furthermore, the variable lane direction electronic signs in the variable lane control unit can adjust the number, the positions and the lanes according to the actual conditions, and the existing installed variable lane direction electronic signs can be accessed into the variable lane control unit for use and controlled by the variable lane control unit in a unified way.
Furthermore, the layout position of the variable lane information induction screen is the front of the variable lane direction electronic direction board, so that a driver can observe the variable lane direction electronic direction board in the first time, the induction information can be timely transmitted to the driver, and the specific layout quantity, size and position and the distance between the variable lane direction electronic direction board and the variable lane direction electronic direction board can be adjusted according to the actual road condition.
Further, the layout scheme of the lane data sensors in the lane information monitoring unit is as follows:
(1) except for a right-turn lane, each lane of a left-turn lane and a straight lane is provided with 2 lane data sensors;
(2) the 1 st lane data sensor of each lane is arranged at a distance L from the stop line of the lane1On the hanger;
(3) the 2 nd lane data sensor of each lane is arranged at a distance L from the 1 st lane data sensor2On the hanger;
wherein L is1Monitoring distance for clear mode; l is2Monitoring the distance for the adjustment mode;
further, the specific control algorithm and control strategy in the data processing unit are divided into different control modes and adjustment levels according to different lane numbers and traffic flow information, and the specific control algorithm and control strategy are as follows:
(1) clear mode
The starting condition is as follows: n is1<N1+n0And n is2<N1；
Wherein the content of the first and second substances,
at the moment, the left-turning lane and the straight lane are both in a smooth state, and the variable lanes are both set as left-turning straight shared lanes;
wherein: n is1During the waiting period of the red light of the left-turn lane at the intersection, the 1 st lane data sensor detects L1Waiting for the average value of the number of left-turning vehicles within the distance;
n2during the red light waiting of the straight lane at the intersection, the 1 st lane data sensor detects L1Waiting for the average value of the number of left-turning vehicles within the distance;
N1l in a left-turn or straight-through lane1The number of vehicles stopping fully within the distance for waiting for the vehicles;
L1-clear mode monitoring distance;
l0-average length of vehicles on the road section;
delta s-the average inter-vehicle distance between the front vehicle head and the front vehicle tail when the vehicle on the road section stops waiting;
n0-number of vehicles stopped with waiting vehicles within a distance Δ L of a left-turn lane waiting area;
delta L-the length of the area to be turned of the left-turning lane;
(2) adjustment mode
Left-turn lane adjustment mode
The starting condition is as follows: n is1≥N1+Δn1And n is2＜N1；
Adjusting the strategy: n isT1＝nT；
Second, straight lane adjustment mode
The starting condition is as follows: n is1＜N1+Δn1And n is2≥N1；
Adjusting the strategy: n isT2＝nT；
Adjusting mode of left-turn straight lane
The starting condition is as follows: n is1≥N1+Δn1And n is2≥N1；
Adjusting the strategy:
wherein the content of the first and second substances,
wherein n isT1And nT2Is an integer rounded off when Δ n1＞N2When in use, will
When the value is 1, when delta n2＞N2When in use, will
The value is 1;
wherein: n isT-total number of variable lanes, nT＝nT1+nT2；
nT1-the variable number of lanes is adjusted to the number of left turn lanes;
nT2-the variable number of lanes is adjusted to the number of straight lanes;
α1-a left turn lane to variable lane demand distribution factor;
α2-demand allocation coefficient of straight-through to variable lane;
Δn1during the waiting period of the red light of the left-turn lane at the intersection, the 2 nd lane data sensor detects L2Waiting for the average value of the number of left-turning vehicles within the distance;
Δn2-the 2 nd lane data sensor detects L during the red light waiting of the straight lane at the crossing2Waiting for the average value of the number of the straight-driving vehicles within the distance;
m1-number of left turn lanes set at the crossing;
m2-number of straight lanes set at the crossing;
N2l in a left-turn or straight-through lane2The number of vehicles stopping fully within the distance for waiting for the vehicles;
L2-adjusting the mode monitoring distance;
l0-average length of vehicles on the road section;
delta s-the average inter-vehicle distance between the front vehicle head and the front vehicle tail when the vehicle on the road section stops waiting;
(3) the adjustment level and control mode correspondence table is as follows:
the adjustment levels are divided into four levels of 0-3, wherein the level 0 indicates that the current traffic is smooth, the variable lane is not required to be adjusted and can be set as a left-turning straight-going common lane, so that the traffic jam is prevented; the 1-3 grades show that the current traffic has a congestion phenomenon, the variable lanes need to be adjusted, and the congestion is more serious at higher grades.
The working principle of the invention is as follows: the lane information monitoring unit monitors related information such as traffic flow of a corresponding lane in real time, sends the data to the data processing unit, the data processing unit receives the real-time monitoring data of the lane information monitoring unit, analyzes and processes the data through a specific control algorithm and a control strategy, divides the current traffic condition into four adjustment levels of 0-3, outputs a control signal to the variable lane information induction screen and the variable lane control unit, adjusts the lane direction of the variable lane in time according to the real-time traffic condition, dredges traffic flow, reduces congestion conditions, and further improves traffic operation efficiency.
Compared with the prior art, the method can divide the current traffic condition into a plurality of grades according to the real-time traffic conditions such as the number of left-turn lanes, the number of straight lanes, the number of variable lanes and the traffic flow at the intersection, and timely adjust the lane direction of the variable lanes according to the different grades, so that the traffic flow is dredged, the congestion condition is reduced, and the traffic operation efficiency is further improved.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the layout of the lane data sensor of the present invention;
in the figure: 1-1 st lane data sensor of each lane, distance L from stop line12-2 nd lane data sensor of each lane, and distance L from 1 st lane data sensor2。
The specific implementation mode is as follows:
example 1
The utility model provides a city wisdom traffic informationization monitoring system which characterized in that: the lane-changing information monitoring system comprises a lane information monitoring unit, a data storage module, a lane-changing information induction screen and a lane-changing control unit which are all connected with a data processing unit;
the lane information monitoring unit is used for monitoring traffic flow related information of corresponding lanes in real time and transmitting data to the data processing unit in real time, and comprises a plurality of lane data sensors which are respectively arranged on a hanger or other fixed supports, wherein one lane data sensor corresponds to one lane and respectively monitors the number information of vehicles passing through the sensor of each lane in real time;
the data storage module is used for storing system operation software, a control algorithm, a control strategy and real-time monitoring data and providing a data storage function for the whole system;
the variable lane information induction screen is used for receiving instructions to display real-time prompt information related to the variable lane and inducing the traffic flow to correctly enter the lane;
the variable lane control unit is used for receiving instructions to control the specific contents of the variable lane direction electronic direction board: the left-turn and left-turn straight-running shared straight-running lane direction information comprises a plurality of variable lane direction electronic direction indicating boards which are respectively arranged above the variable lanes, so that a driver can conveniently check the direction information in time, and the variable lanes are positioned between the left-turn lanes and the straight-running lanes;
the data processing unit is used for receiving the real-time monitoring data of the lane information monitoring unit, analyzing and processing the data through a specific control algorithm and a control strategy, outputting a control signal to the variable lane information induction screen and the variable lane control unit, adjusting the lane direction in time according to the real-time traffic condition, dredging the traffic flow, reducing the congestion condition and further improving the traffic operation efficiency.
The lane direction changeable electronic signs in the lane direction changeable control unit can adjust the set number, position and lanes according to the actual condition, and the existing installed lane direction changeable electronic signs can be accessed into the lane direction changeable electronic signs to be used and controlled by the lane direction changeable control unit in a unified way.
The layout position of the variable lane information induction screen is the front of the variable lane direction electronic indicator, so that a driver can observe the variable lane direction electronic indicator in the first time, the induction information can be timely transmitted to the driver, and the specific layout quantity, size and position and the distance between the variable lane direction electronic indicator and the variable lane direction electronic indicator can be adjusted according to the actual road condition.
Example 2
The utility model provides a city wisdom traffic informationization monitoring system which characterized in that: the lane-changing information monitoring system comprises a lane information monitoring unit, a data storage module, a lane-changing information induction screen and a lane-changing control unit which are all connected with a data processing unit;
the lane information monitoring unit is used for monitoring traffic flow related information of corresponding lanes in real time and transmitting data to the data processing unit in real time, and comprises a plurality of lane data sensors which are respectively arranged on a hanger or other fixed supports, wherein one lane data sensor corresponds to one lane and respectively monitors the number information of vehicles passing through the sensor of each lane in real time;
the data storage module is used for storing system operation software, a control algorithm, a control strategy and real-time monitoring data and providing a data storage function for the whole system;
the variable lane information induction screen is used for receiving instructions to display real-time prompt information related to the variable lane and inducing the traffic flow to correctly enter the lane;
the variable lane control unit is used for receiving instructions to control the specific contents of the variable lane direction electronic direction board: the left-turn and left-turn straight-running shared straight-running lane direction information comprises a plurality of variable lane direction electronic direction indicating boards which are respectively arranged above the variable lanes, so that a driver can conveniently check the direction information in time, and the variable lanes are positioned between the left-turn lanes and the straight-running lanes;
the data processing unit is used for receiving the real-time monitoring data of the lane information monitoring unit, analyzing and processing the data through a specific control algorithm and a control strategy, outputting a control signal to the variable lane information induction screen and the variable lane control unit, adjusting the lane direction in time according to the real-time traffic condition, dredging the traffic flow, reducing the congestion condition and further improving the traffic operation efficiency.
The lane direction changeable electronic signs in the lane direction changeable control unit can adjust the set number, position and lanes according to the actual condition, and the existing installed lane direction changeable electronic signs can be accessed into the lane direction changeable electronic signs to be used and controlled by the lane direction changeable control unit in a unified way.
The layout position of the variable lane information induction screen is the front of the variable lane direction electronic indicator, so that a driver can observe the variable lane direction electronic indicator in the first time, the induction information can be timely transmitted to the driver, and the specific layout quantity, size and position and the distance between the variable lane direction electronic indicator and the variable lane direction electronic indicator can be adjusted according to the actual road condition.
The lane data sensor in the lane information monitoring unit adopts a laser radar sensor with the model of TF02, and the layout scheme is as follows:
(1) except for a right-turn lane, each lane of a left-turn lane and a straight lane is provided with 2 lane data sensors;
(2) the 1 st lane data sensor of each lane is arranged at a distance L from the stop line of the lane1On the hanger;
(3) the 2 nd lane data sensor of each lane is arranged at a distance L from the 1 st lane data sensor2On the hanger;
description of the drawings: l is1Monitoring distance for clear mode; l is2Monitoring the distance for the adjustment mode;
example 3
The utility model provides a city wisdom traffic informationization monitoring system which characterized in that: the lane-changing information monitoring system comprises a lane information monitoring unit, a data storage module, a lane-changing information induction screen and a lane-changing control unit which are all connected with a data processing unit;
the lane information monitoring unit is used for monitoring traffic flow related information of a corresponding lane in real time and transmitting data to the data processing unit in real time, and comprises a plurality of lane data sensors, such as: the laser radar sensors are respectively arranged on the hanging bracket or other fixed supports, one lane data sensor corresponds to one lane, and the information of the number of vehicles passing through the sensors of the lane is respectively monitored in real time;
the data storage module is used for storing system operation software, a control algorithm, a control strategy and real-time monitoring data and providing a data storage function for the whole system;
the variable lane information induction screen is used for receiving instructions to display real-time prompt information related to the variable lane and inducing the traffic flow to correctly enter the lane;
the variable lane control unit is used for receiving instructions to control the specific contents of the variable lane direction electronic direction board: the left-turn and left-turn straight-running shared straight-running lane direction information comprises a plurality of variable lane direction electronic direction indicating boards which are respectively arranged above the variable lanes, so that a driver can conveniently check the direction information in time, and the variable lanes are positioned between the left-turn lanes and the straight-running lanes;
the data processing unit is used for receiving the real-time monitoring data of the lane information monitoring unit, analyzing and processing the data through a specific control algorithm and a control strategy, outputting a control signal to the variable lane information induction screen and the variable lane control unit, adjusting the lane direction in time according to the real-time traffic condition, dredging the traffic flow, reducing the congestion condition and further improving the traffic operation efficiency.
The lane direction changeable electronic signs in the lane direction changeable control unit can adjust the set number, position and lanes according to the actual condition, and the existing installed lane direction changeable electronic signs can be accessed into the lane direction changeable electronic signs to be used and controlled by the lane direction changeable control unit in a unified way.
The layout position of the variable lane information induction screen is the front of the variable lane direction electronic indicator, so that a driver can observe the variable lane direction electronic indicator in the first time, the induction information can be timely transmitted to the driver, and the specific layout quantity, size and position and the distance between the variable lane direction electronic indicator and the variable lane direction electronic indicator can be adjusted according to the actual road condition.
The lane data sensor in the lane information monitoring unit adopts a laser radar sensor with the model of TF02, and the layout scheme is as follows:
(1) except for a right-turn lane, each lane of a left-turn lane and a straight lane is provided with 2 lane data sensors;
(2) the 1 st lane data sensor of each lane is arranged at a distance L from the stop line of the lane1On the hanger;
(3) the 2 nd lane data sensor of each lane is arranged at a distance L from the 1 st lane data sensor2On the hanger;
wherein L is1Monitoring distance for clear mode; l is2Monitoring the distance for the adjustment mode;
the specific control algorithm and control strategy in the data processing unit are divided into different control modes and adjustment levels according to different lane numbers and traffic flow information, and the specific control algorithm and control strategy are as follows:
(1) clear mode
The starting condition is as follows: n is1＜N1+n0And n is2＜N1；
Wherein the content of the first and second substances,
at the moment, the left-turning lane and the straight lane are both in a smooth state, and the variable lanes are both set as left-turning straight shared lanes;
wherein: n is1During the waiting period of the red light of the left-turn lane at the intersection, the 1 st lane data sensor detects L1Waiting for the average value of the number of left-turning vehicles within the distance;
n2during the red light waiting of the straight lane at the intersection, the 1 st lane data sensor detects L1Waiting for the average value of the number of left-turning vehicles within the distance;
N1l in a left-turn or straight-through lane1The number of vehicles stopping fully within the distance for waiting for the vehicles;
L1-clear mode monitoring distance;
l0-average length of vehicles on the road section;
delta s-the average inter-vehicle distance between the front vehicle head and the front vehicle tail when the vehicle on the road section stops waiting;
n0-number of vehicles stopped with waiting vehicles within a distance Δ L of a left-turn lane waiting area;
delta L-the length of the area to be turned of the left-turning lane;
(2) adjustment mode
Left-turn lane adjustment mode
The starting condition is as follows: n is1≥N1+Δn1And n is2＜N1；
Adjusting the strategy: n isT1＝nT；
Second, straight lane adjustment mode
The starting condition is as follows: n is1＜N1+Δn1And n is2≥N1；
Adjusting the strategy: n isT2＝nT；
Adjusting mode of left-turn straight lane
The starting condition is as follows: n is1≥N1+Δn1And n is2≥N1；
Adjusting the strategy:
wherein the content of the first and second substances,
wherein n isT1And nT2Is an integer rounded off when Δ n1＞N2When in use, will
When the value is 1, when delta n2＞N2When in use, will
The value is 1;
wherein: n isT-total number of variable lanes, nT＝nT1+nT2；
nT1-the variable number of lanes is adjusted to the number of left turn lanes;
nT2-the variable number of lanes is adjusted to the number of straight lanes;
α1-a left turn lane to variable lane demand distribution factor;
α2-demand allocation coefficient of straight-through to variable lane;
Δn1during the waiting period of the red light of the left-turn lane at the intersection, the 2 nd lane data sensor detects L2Waiting for the average value of the number of left-turning vehicles within the distance;
Δn2-the 2 nd lane data sensor detects L during the red light waiting of the straight lane at the crossing2Waiting for the average value of the number of the straight-driving vehicles within the distance;
m1-number of left turn lanes set at the crossing;
m2-number of straight lanes set at the crossing;
N2in a left-turn or straight-through laneL2The number of vehicles stopping fully within the distance for waiting for the vehicles;
L2-adjusting the mode monitoring distance;
l0-average length of vehicles on the road section;
delta s-the average inter-vehicle distance between the front vehicle head and the front vehicle tail when the vehicle on the road section stops waiting;
(3) the adjustment level and control mode correspondence table is as follows:
the adjustment levels are divided into four levels of 0-3, wherein the level 0 indicates that the current traffic is smooth, the variable lane is not required to be adjusted and can be set as a left-turning straight-going common lane, so that the traffic jam is prevented; the 1-3 grades show that the current traffic has a congestion phenomenon, the variable lanes need to be adjusted, and the congestion is more serious at higher grades.
The working principle of the invention is as follows: the lane information monitoring unit monitors related information such as traffic flow of a corresponding lane in real time, sends the data to the data processing unit, the data processing unit receives the real-time monitoring data of the lane information monitoring unit, analyzes and processes the data through a specific control algorithm and a control strategy, divides the current traffic condition into four adjustment levels of 0-3, outputs a control signal to the variable lane information induction screen and the variable lane control unit, adjusts the lane direction of the variable lane in time according to the real-time traffic condition, dredges traffic flow, reduces congestion conditions, and further improves traffic operation efficiency.
Compared with the prior art, the method can divide the current traffic condition into a plurality of grades according to the real-time traffic conditions such as the number of left-turn lanes, the number of straight lanes, the number of variable lanes and the traffic flow at the intersection, and timely adjust the lane direction of the variable lanes according to the different grades, so that the traffic flow is dredged, the congestion condition is reduced, and the traffic operation efficiency is further improved.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (4)
1. The utility model provides a city wisdom traffic informationization monitoring system which characterized in that: the lane-changing information monitoring system comprises a lane information monitoring unit, a data storage module, a lane-changing information induction screen and a lane-changing control unit which are all connected with a data processing unit;
the lane information monitoring unit is used for monitoring traffic flow related information of corresponding lanes in real time and transmitting data to the data processing unit in real time, and comprises a plurality of lane data sensors which are respectively arranged on a hanger or other fixed supports, wherein one lane data sensor corresponds to one lane and respectively monitors the number information of vehicles passing through the sensor of each lane in real time;
the data storage module is used for storing system operation software, a control algorithm, a control strategy and real-time monitoring data and providing a data storage function for the whole system;
the variable lane information induction screen is used for receiving instructions to display real-time prompt information related to the variable lane and inducing the traffic flow to correctly enter the lane;
the variable lane control unit is used for receiving instructions to control the specific contents of the variable lane direction electronic direction board: the left-turn and left-turn straight-running shared straight-running lane direction information comprises a plurality of variable lane direction electronic direction indicating boards which are respectively arranged above the variable lanes, so that a driver can conveniently check the direction information in time, and the variable lanes are positioned between the left-turn lanes and the straight-running lanes;
the data processing unit is used for receiving the real-time monitoring data of the lane information monitoring unit, analyzing and processing the data through a specific control algorithm and a control strategy, outputting a control signal to the variable lane information induction screen and the variable lane control unit, adjusting the lane direction in time according to the real-time traffic condition, dredging the traffic flow, reducing the congestion condition and further improving the traffic operation efficiency;
the specific control algorithm and control strategy in the data processing unit are divided into different control modes and adjustment levels according to different lane numbers and traffic flow information, and the specific control algorithm and control strategy are as follows:
(1) clear mode
The starting condition is as follows: n is1＜N1+n0And n is2＜N1；
Wherein the content of the first and second substances,
at the moment, the left-turning lane and the straight lane are both in a smooth state, and the variable lanes are both set as left-turning straight shared lanes;
wherein: n is1During the waiting period of the red light of the left-turn lane at the intersection, the 1 st lane data sensor detects L1Waiting for the average value of the number of left-turning vehicles within the distance;
n2during the red light waiting of the straight lane at the intersection, the 1 st lane data sensor detects L1Waiting for the average value of the number of left-turning vehicles within the distance;
N1l in a left-turn or straight-through lane1The number of vehicles stopping fully within the distance for waiting for the vehicles;
L1-clear mode monitoring distance;
l0-average length of vehicles on the road section;
delta s-the average inter-vehicle distance between the front vehicle head and the front vehicle tail when the vehicle on the road section stops waiting;
n0stopping the waiting vehicle within a distance Δ L from the left-turn lane waiting zoneThe number of cars of (1);
delta L-the length of the area to be turned of the left-turning lane;
(2) adjustment mode
Left-turn lane adjustment mode
The starting condition is as follows: n is1≥N1+Δn1And n is2＜N1；
Adjusting the strategy: n isT1＝nT；
Second, straight lane adjustment mode
The starting condition is as follows: n is1＜N1+Δn1And n is2≥N1；
Adjusting the strategy: n isT2＝nT；
Adjusting mode of left-turn straight lane
The starting condition is as follows: n is1≥N1+Δn1And n is2≥N1；
Adjusting the strategy:
wherein the content of the first and second substances,
wherein the content of the first and second substances,nT1and nT2Is an integer rounded off when Δ n1＞N2When in use, will
When the value is 1, when delta n2＞N2When in use, will
The value is 1;
wherein: n isT-total number of variable lanes, nT＝nT1+nT2；
nT1-the variable number of lanes is adjusted to the number of left turn lanes;
nT2-the variable number of lanes is adjusted to the number of straight lanes;
α1-a left turn lane to variable lane demand distribution factor;
α2-demand allocation coefficient of straight-through to variable lane;
Δn1during the waiting period of the red light of the left-turn lane at the intersection, the 2 nd lane data sensor detects L2Waiting for the average value of the number of left-turning vehicles within the distance;
Δn2-the 2 nd lane data sensor detects L during the red light waiting of the straight lane at the crossing2Waiting for the average value of the number of the straight-driving vehicles within the distance;
m1-number of left turn lanes set at the crossing;
m2-number of straight lanes set at the crossing;
N2l in a left-turn or straight-through lane2The number of vehicles stopping fully within the distance for waiting for the vehicles;
L2-adjusting the mode monitoring distance;
l0-average length of vehicles on the road section;
delta s-the average inter-vehicle distance between the front vehicle head and the front vehicle tail when the vehicle on the road section stops waiting;
(3) the adjustment level and control mode correspondence table is as follows:
the adjustment levels are divided into four levels of 0-3, wherein the level 0 indicates that the current traffic is smooth, the variable lane is not required to be adjusted and can be set as a left-turning straight-going common lane, so that the traffic jam is prevented; the 1-3 grades show that the current traffic has a congestion phenomenon, the variable lanes need to be adjusted, and the congestion is more serious at higher grades.
2. The system of claim 1, wherein the system comprises: the lane direction changeable electronic signs in the lane direction changeable control unit can adjust the set number, position and lanes according to the actual condition, and the existing installed lane direction changeable electronic signs can be accessed into the lane direction changeable electronic signs to be used and controlled by the lane direction changeable control unit in a unified way.
3. The system of claim 1, wherein the system comprises: the layout position of the variable lane information induction screen is the front of the variable lane direction electronic indicator, so that a driver can observe the variable lane direction electronic indicator in the first time, the induction information can be timely transmitted to the driver, and the specific layout quantity, size and position and the distance between the variable lane direction electronic indicator and the variable lane direction electronic indicator can be adjusted according to the actual road condition.
4. The system of claim 1, wherein the system comprises: the layout scheme of the lane data sensors in the lane information monitoring unit is as follows:
(1) except for a right-turn lane, each lane of a left-turn lane and a straight lane is provided with 2 lane data sensors;
(2) the 1 st lane data sensor of each lane is arranged at a distance L from the stop line of the lane1On the hanger;
(3) The 2 nd lane data sensor of each lane is arranged at a distance L from the 1 st lane data sensor2On the hanger;
wherein L is1Monitoring distance for clear mode; l is2The distance is monitored for the adjustment mode.
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