WO2018232896A1

WO2018232896A1 - Intelligent traffic light control method and device

Info

Publication number: WO2018232896A1
Application number: PCT/CN2017/096969
Authority: WO
Inventors: 杜光东
Original assignee: 深圳市盛路物联通讯技术有限公司
Priority date: 2017-06-23
Filing date: 2017-08-11
Publication date: 2018-12-27
Also published as: CN107170256A

Abstract

An intelligent traffic light control method and device. The method comprises: receiving in real time traffic flow information sent by terminals corresponding to at least one intersection (210); periodically calculating vehicle flow information at each intersection among the at least one intersection within a fixed time period (220); respectively calculating, according to the vehicle flow information at each intersection among the at least one intersection within the fixed time period, the lighted time and unlighted time of the traffic light at each intersection among the at least one intersection within the fixed time period (230); and respectively sending the lighted time and unlighted time of the traffic light at each intersection among the at least one intersection within the fixed time period to the corresponding terminal (240). By means of this method, the lighted time and unlighted time of the traffic light within each fixed time period can be periodically controlled, and traffic roads can be fully utilized, avoiding resource waste and reducing traffic congestion.

Description

Traffic light intelligent control method and device

Technical field

The present invention relates to the field of security control technologies, and in particular, to a traffic light intelligent control method and apparatus.

Background technique

The existing traffic lights are on and off at a fixed time, that is, the green letter ratio is fixed. Although the setting of the traffic lights is to ensure that the vehicles at each intersection can be in an orderly manner, the traffic is safe. However, in many crossroads, for example, there is currently no vehicle in the north-south direction, and many vehicles in the east-west direction are waiting in line. Just because the green light in the north-south direction has not expired, the corresponding red light in the east-west direction needs to be kept on for a while. The vehicles leading to the east-west direction are unable to travel, and the roads in the north-south direction are idle. As a result, it is a waste of resources.

Moreover, if during the peak hours of commuting, even the waiting time for the red light is too long, the congestion of some road sections will be aggravated. Then, how to intelligently control the lighting time of the traffic lights, reduce the waste of resources, and avoid the occurrence of traffic congestion has become a technical problem to be solved urgently.

Summary of the invention

In order to solve the above technical problems, the present invention provides a traffic light intelligent control method and apparatus.

In a first aspect, the present invention provides a traffic light intelligent control method, the method comprising:

Receiving traffic flow information sent by the terminal corresponding to at least one intersection in real time;

Periodically counting traffic flow information for a fixed period of time at each of the at least one intersection;

Calculating, according to the traffic flow information in each of the crossroads of each of the crossroads, the traffic light of each of the at least one intersection in a fixed period of time;

The light-off time of the traffic lights in each of the at least one intersection in a fixed time period is respectively sent to the corresponding terminal, so that the terminal controls the traffic light on and off state and the on-off time of the corresponding at least one intersection.

The traffic light intelligent control method provided by the embodiment of the invention periodically calculates the traffic flow information of each crossroad in a fixed time period, and according to the traffic flow information of each crossroad in a fixed time period. Periodically control the lighting time of each traffic light in a fixed period of time. Further control of the green light and red light of the traffic light can make full use of the traffic passage. Avoid waste of resources and reduce traffic congestion.

Further, when the first intersection includes a left-turning traffic light, calculating the first intersection left according to the left turn traffic flow information in the fixed time period of the first intersection The time of turning off the traffic lights, including:

Receiving indication information uploaded by a vehicle that is about to turn left during a fixed period of time;

Count the number of vehicles that are about to turn left according to the indication information;

Calculate the ratio between the number of vehicles that are about to turn left and the sum of traffic at the first intersection, and compare the ratio between the number of vehicles that are about to turn left and the sum of the traffic at the first intersection as the left turn to the traffic light. Green letter ratio in the time period;

According to the green letter ratio of the left turn to the traffic light for a fixed period of time, calculate the time of turning off the left turn to the traffic light for a fixed period of time;

And/or, when the first crossroad includes a right turn traffic light, calculating the first crossroad according to the right turn traffic flow information of the first crossroad for a fixed period of time The time of turning off the right traffic light, including:

Receiving indication information uploaded by a vehicle that is about to turn right during a fixed period of time;

Count the number of vehicles that are about to turn right according to the indication information;

Calculate the ratio between the number of vehicles that are about to turn right and the sum of the traffic at the first intersection, and compare the ratio between the number of vehicles that are about to turn right and the sum of traffic at the first intersection as a right turn to the traffic light. Green letter ratio in the time period;

According to the green letter ratio of the right turn to the traffic light for a fixed period of time, calculate the time of the right turn to the traffic light for a fixed period of time.

The beneficial technical effect of adopting the above further solution is that the way of counting the left turn or the right turn to the traffic flow can be obtained by counting the average value of the traffic flow information in the historical time period as the future left turn or right turn traffic flow. Reference data. And this data is an average. In order to be able to more accurately calculate the turn-off time of the left turn or the right turn to the traffic light, it is also possible to display the indication information of the left turn or the right turn that the user needs to upload in real time. Then accurately count the number of vehicles that are about to turn left or right, and calculate the time when the corresponding green light is off.

In a second aspect, the present invention provides a traffic light intelligent control device, the device comprising:

a receiving unit, configured to receive, in real time, traffic flow information sent by a terminal corresponding to at least one intersection;

a statistical unit, configured to periodically count traffic flow information in a fixed time period of each of the at least one intersection;

The processing unit is configured to calculate, according to the traffic flow information in each of the at least one intersection of the at least one intersection, the traffic light of each of the at least one intersection in a fixed period of time time;

a sending unit, configured to send, to each terminal, a traffic light of each of the at least one intersection in a fixed period of time to be sent to the corresponding terminal, so that the terminal controls the traffic light of the corresponding at least one intersection to be off. And light up time.

The traffic light intelligent control device provided by the embodiment of the invention periodically counts the traffic flow information of each crossroad in a fixed time period, and the processing unit is based on each crossroad in a fixed time period. The traffic flow information calculates the on and off time of the traffic lights for each fixed period of time. Further control of the green light and red light of the traffic light can make full use of the traffic passage. Avoid waste of resources and reduce traffic congestion.

Further, the device further includes: a receiving unit, configured to receive indication information that is uploaded by the vehicle that is about to turn left during a fixed period of time;

The statistical unit is specifically configured to: count the number of vehicles that are about to turn left according to the indication information;

The processing unit is specifically configured to: calculate a ratio between the number of vehicles that are about to turn left and the total traffic volume of the first intersection, and compare the ratio between the number of vehicles that are about to turn left and the total traffic of the first intersection as the left The green letter ratio of the traffic light to the fixed time period;

And/or a receiving unit, configured to receive indication information uploaded by the vehicle that is about to turn right during a fixed time period;

The statistical unit is specifically configured to: count the number of vehicles that are about to turn right according to the indication information;

The processing unit is specifically configured to: calculate a ratio between the number of vehicles that are about to turn right and the total traffic volume of the first intersection, and compare the ratio between the number of vehicles that are about to turn right and the total traffic of the first intersection as the right The green letter ratio of the traffic light to the fixed time period;

An advantageous technical effect of adopting the above further solution is that if the statistical unit counts the left turn or the right turn to the traffic flow, the average value of the traffic flow information in the historical time period can be counted as the future left turn or right turn. Reference data for traffic flow. And this data is an average. In order to be able to more accurately adjust the left turn or right turn to the traffic light on and off time, it can also be based on the user's real-time uploading instructions that need to turn left or turn right. Then accurately count the number of vehicles that are about to turn left or right, and use the processing unit to calculate the time when the corresponding green light is off.

DRAWINGS

1 is a system architecture diagram of a traffic light intelligent control system according to an embodiment of the present invention;

2 is a schematic flowchart of a traffic light intelligent control method according to an embodiment of the present invention;

3 is a schematic flowchart of another traffic light intelligent control method according to an embodiment of the present invention;

4 is a schematic flow chart of a method for calculating a light-off time of a traffic light at a first intersection according to traffic flow information of a first intersection during a fixed time period;

Figure 5 shows the first calculation when the first intersection includes four traffic passages of east, west, south and north. Schematic diagram of the method for the light-off time of a traffic light at a crossroad;

FIG. 6 is a diagram showing the light-off time of the traffic light at the first intersection according to the traffic information of the left turn to the traffic flow in the fixed time period when the first crossroad includes the left turn traffic light. Schematic diagram of the method flow;

7 is a flow chart showing another method for calculating the light-off time of the traffic light of the first crossroad when the first crossroad includes the left turn traffic light;

FIG. 8 is a diagram showing the light-off time of the traffic light at the first crossroad according to the right turn traffic flow information of the first crossroad in a fixed time period when the first crossroad includes the right turn traffic light. Schematic diagram of the method flow;

FIG. 9 is a flow chart showing another method for calculating the light-off time of the traffic light at the first intersection when the first intersection includes a right turn-to-light traffic light;

FIG. 10 is a schematic structural diagram of another traffic light intelligent control device according to an embodiment of the present invention.

Detailed ways

In the following description, for purposes of illustration and description However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, circuits, and methods are omitted so as not to obscure the description of the invention.

First, an embodiment of the present invention provides a traffic light intelligent control system. Specifically, as shown in FIG. 1 , FIG. 1 is a system architecture diagram of a traffic light intelligent control system according to an embodiment of the present invention. The system includes at least one image collector 10, at least one terminal 20, an IoT gateway 30, a server 40, and at least one traffic light 50. Specifically, at least one image collector 10 is installed with different intersections for collecting traffic flow information of at least one intersection. The traffic information is transmitted to the terminal 20. The number of terminals 20 may be the same as the number of intersections. That is, each intersection includes a terminal 20 for processing image information collected by at least one image collector included in the intersection. The terminal 20 transmits the processed image information to the server 40 through the Internet of Things gateway 30. The traffic flow information of each intersection is periodically counted by the server 40. And according to the corresponding statistical data, calculate the on and off time of the traffic light 50 of each intersection. The light-off time of the traffic light 50 of each intersection is then sent to the terminal 20 corresponding to each intersection, respectively. So that the terminal of the intersection controls the lighting time of the corresponding traffic light.

In order to provide a detailed overview of the embodiments of the present invention, an embodiment of the present invention further provides a traffic light intelligent control method. 2 is a schematic flowchart of a traffic light intelligent control method according to an embodiment of the present invention. The method includes:

Step 210: Receive traffic flow information sent by the terminal corresponding to the at least one intersection in real time.

Specifically, as shown in the foregoing embodiment, the image collector in the at least one intersection collects the traffic information of the corresponding intersection in real time, and transmits the information to the terminal in the form of an image. The terminal preprocesses the image information and sends it to the server.

Step 220: Periodically count traffic flow information in a fixed time period of each of the at least one intersection.

Although the terminal sends traffic information to the server in real time, there may be data updates in real-time data. For example, the traffic volume of the previous second is 100, and the next one second adds 5 cars to the traffic. That is, the traffic volume has changed to 105. In this way, the server is not able to control the lighting time of the traffic lights in real time, then the traffic flow information in a fixed time period can be counted, and then the traffic light on and off time is controlled according to the traffic flow information in a fixed time period.

Step 230: Calculate, according to the traffic flow information in each of the crossroads of each of the at least one intersection, the time of the traffic light of each of the at least one intersection in a fixed period of time.

Step 240: Send the blinking time of each traffic light of each of the at least one intersection to the corresponding terminal in a fixed time period.

Specifically, after the traffic light of each of the at least one intersection is sent to the corresponding terminal in a fixed period of time, the corresponding terminal may be within a fixed time period according to the intersection sent by the server. The lighting time of the traffic light controls the lighting time of the traffic light and the status of the lighting.

In order to further enrich the technical solution of the present invention. Another embodiment of the present invention provides a traffic light intelligent control method. Specifically shown in Figure 3. FIG. 3 is a schematic flowchart diagram of another traffic light intelligent control method according to an embodiment of the present invention. In this method, the description is mainly made by taking a crossroad as an example, that is to say, the present embodiment is mainly directed to controlling the traffic light on and off time and the on-off state of only one crossroad. Specifically, the method includes: Steps 310 to 320 are the same as steps 210 to 220 of the foregoing embodiment. The description will not be repeated here.

Step 330: Calculate the time of the traffic light of the first crossroad in the fixed time period according to the traffic flow information in the fixed time period of the first crossroad.

Specifically, in the present embodiment, it is assumed that the first crossroad includes a first traffic light that controls the passage of the east-west vehicle and a second traffic light that controls the traffic of the north-south direction.

Then, according to the traffic flow information of the first intersection in a fixed period of time, calculate the first cross The lighting time of the traffic light at the intersection, as shown in Figure 4, includes the following steps:

In step 410, the traffic volume in the east-west direction and the traffic flow in the north-south direction and the total traffic volume at the first intersection are respectively counted in a fixed time period.

Specifically, the server first analyzes the traffic flow information in the east-west direction and the traffic flow information in the north-south direction according to the traffic flow information sent by the terminal. Then, the traffic flow in the east-west direction and the traffic flow in the north-south direction in a fixed time period are separately counted. At the same time, the total traffic volume at the first crossroads is counted. Of course, the sum of the traffic at the first crossroads has actually been implemented in step 320. Here, however, the result of the extraction in step 420 is called.

Step 420: Calculate a first ratio between the traffic flow in the east-west direction and the total traffic flow at the first intersection in a fixed time period, and use the first ratio as the green signal ratio of the first traffic light in a fixed time period.

Specifically, the sum of the traffic flow at a crossroad is fixed for a fixed period of time. The traffic flow in the east-west direction and the traffic flow in the north-south direction are also fixed. Then, if there is too much traffic in a certain direction, you can control the green light in this direction to be slightly longer according to a certain ratio. On the contrary, if the traffic volume in the other direction is slightly less, the time for the green light in this direction can be controlled to be slightly shorter according to a certain ratio. The specific implementation is based on proportional calculation. That is, the first ratio between the traffic flow in the east-west direction and the total traffic flow at the first intersection in a fixed time period is calculated, and the first ratio is used as the green signal ratio of the first traffic light in a fixed time period.

Preferably, if there is no traffic flow in the east-west direction for a fixed period of time, the server may directly send indication information to the terminal to indicate that the terminal controls the green light in the east-west direction. At the same time, the green light that controls the north-south direction is bright.

Step 430: Calculate a light-off time of the first traffic light in a fixed time period according to a green signal ratio of the first traffic light in a fixed time period.

Specifically, the fixed time period here can be understood as the period in which the traffic light is on and off. Generally, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute. According to the green letter ratio of the first traffic light in a fixed time period, the time of the first traffic light in the fixed time period is calculated, that is, the first traffic light is calculated by multiplying the green signal ratio by a fixed time period. The green light in the time. The time when the yellow light is on is basically a fixed value, for example, the fixed time period is 1 minute, and the yellow light is set to 5 seconds. Then, the remaining time in the fixed time period is the time when the red light in the first traffic light is on.

And, in step 440, calculating a second ratio between the traffic flow in the north-south direction and the total traffic volume at the first crossroad in the fixed time period, and using the second ratio as the green letter of the second traffic light in the fixed time period ratio.

Further preferably, if there is no traffic flow in the north-south direction for a fixed period of time, the server may directly send indication information to the terminal to indicate that the terminal controls the green light in the north-south direction. At the same time, the green light that controls the east-west direction is bright.

Similar to step 420, first calculating a second ratio between the traffic flow in the north-south direction and the total traffic volume at the first intersection in a fixed time period, and then using the ratio as a fixed time period, The green letter ratio of the two traffic lights.

Step 450: Calculate a lighting time of the second traffic light in a fixed time period according to a green signal ratio of the second traffic light in a fixed time period.

Similar to step 430, the fixed time period is the period during which the traffic light is on. According to the green signal ratio of the second traffic light in a fixed time period, the time of the second traffic light in the fixed time period is calculated, that is, the second traffic light is calculated by multiplying the green signal ratio by a fixed time period. The green light in the time. The time when the yellow light is on is basically a fixed value, for example, the fixed time period is 1 minute, and the yellow light is set to 5 seconds. Then, the remaining time in the fixed time period is the time when the red light in the second traffic light is on.

Step 340: Send the light-off time of the first traffic light of the first intersection in the fixed time period and the light-off time of the light-off time of the second traffic light in the fixed time period to the corresponding terminal respectively.

Specifically, the lighting time of the first traffic light of the first intersection at a fixed time period and the lighting time of the second traffic light during a fixed time period are sent to the corresponding terminal. The corresponding terminal can control the on/off time and the off state of the traffic light according to the time when the traffic light of the first traffic light and the second traffic light of the intersection sent by the server are in a fixed period of time.

The traffic light intelligent control method provided by the embodiment of the invention separately calculates the traffic flow of the traffic channel in the east-west direction, the north-south direction, and the total traffic flow of the first crossroad intersection. The first ratio between the traffic flow of the traffic channel in the east-west direction and the total traffic volume of the first crossroad is calculated, and the second ratio between the traffic flow of the traffic channel in the north-south direction and the total traffic volume of the first crossroad is calculated. The first ratio is used as the green letter ratio of the traffic light corresponding to the traffic channel in the east-west direction, and the time of the first traffic light in the fixed time period is further calculated. The second ratio is used as the green letter ratio of the traffic light corresponding to the traffic channel in the north-south direction, and the lighting time of the second traffic light in the fixed time period is further calculated. Through this final mode, the lighting time of traffic lights in different directions can be periodically adjusted to ensure that traffic jams are avoided as much as possible under the premise of full utilization of traffic channels.

Further, if the first intersection includes four traffic passages of east, west, south, and north, the method of controlling the traffic light on and off and the off state of the first intersection, the main steps of the method are the same as the previous one. The method steps in the embodiment are the same or similar, and the only difference is that in step 330, the traffic light of the first crossroad in the fixed time period is calculated according to the traffic flow information in the fixed time period of the first crossroad intersection. When the time is off, the specific calculation process is different.

Therefore, the other steps are not described here, only the details: when the first intersection includes four traffic passages of east, west, south and north, the specific execution process of step 330. Specifically, as shown in Figure 5.

The process can include:

In step 510, the traffic flow in the east, west, south, and north directions in the fixed time period and the total traffic flow at the first intersection are respectively counted.

Specifically, the server first analyzes the traffic flow information in the east, west, south, and north directions according to the traffic flow information sent by the terminal. Then, the traffic flow in the east, west, south, and north directions in a fixed time period is separately counted. At the same time, the total traffic volume at the first crossroads is counted. Of course, the above implementation For example, the sum of the traffic at the first crossroads has actually been implemented in step 420. Here, however, the result of the extraction in step 420 is called.

Step 520, respectively calculating the ratio of the traffic flow in the east, west, south, and north directions in the fixed time period to the sum of the traffic flows at the first crossroad.

Specifically, the sum of the traffic flow at a crossroad is fixed for a fixed period of time. The traffic flow in the east and west directions is fixed. Similarly, the traffic flow in the south and north directions is also fixed. Then, if there is too much traffic in a certain direction, you can control the green light in this direction to be slightly longer according to a certain ratio. On the contrary, if the traffic volume in the other direction is slightly less, the time for the green light in this direction can be controlled to be slightly shorter according to a certain ratio. The specific implementation is based on proportional calculation. That is, the ratio between the traffic flow in the east, west, south, and north directions and the sum of the traffic at the first crossroad in the fixed time period is calculated separately.

Step 530: respectively, the ratio between the traffic flow in the east, west, south, and north directions in the fixed time period and the total traffic flow at the first intersection is used as the traffic light of the corresponding direction within a fixed time period. Green letter ratio.

Preferably, if any one of the four directions of the east, the west, the south, and the north has no traffic flow for a fixed period of time, the server may directly send the indication information to the terminal to indicate that the terminal controls the green light of the direction to be off. At the same time, the green light in the opposite direction is controlled.

Step 540: Calculate the time of the traffic light of the corresponding direction in a fixed time period according to the green signal ratio of the traffic light of the corresponding direction in a fixed time period.

Specifically, the fixed time period here can be understood as the period in which the traffic light is on and off. Generally, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute. According to the green letter ratio of the traffic lights in the four directions of east, west, south and north, respectively, the time of the four directions of east, west, south and north in the fixed time period is calculated accordingly, that is, The green signal ratio corresponding to each of the four directions of east, west, south, and north is multiplied by a fixed time period, and the green light in the traffic light corresponding to the direction is calculated. The time when the yellow light is on is basically a fixed value, for example, the fixed time period is 1 minute, and the yellow light is set to 5 seconds. Then, the remaining time in the fixed time period is the time when the red light in the first traffic light is on.

In addition, the reader should understand that the east-west direction vehicles are driving in parallel reverse lanes, and the north-south vehicles are driving in parallel reverse lanes.

The traffic light intelligent control method provided by the embodiment of the invention separately calculates the traffic flow of the traffic passage in the four directions of east, west, south and north, and the sum of the traffic flow of the first crossroad intersection. And calculate the ratio between the traffic flow of the traffic channel in the east, west, south and north and the total traffic flow at the first crossroad. The ratio calculated in each direction is used as the green signal ratio of the traffic light corresponding to the traffic lane in the direction, and the lighting time of the traffic light in the direction is determined in a fixed period of time. In this way, the lighting time of traffic lights in different directions can be periodically adjusted to ensure that traffic jams are avoided as much as possible under the premise of full utilization of traffic channels.

Further, if the first intersection further includes a left turn traffic light and/or a right turn traffic light, another method of controlling the traffic light on and off and the light on and off state of the first intersection is required. Similarly, the main steps of the method are the same as or similar to the method steps in the previous embodiment, and the only difference is that in step 330, according to the traffic flow information in the fixed time period of the first crossroad, the calculation is performed. The specific calculation process is different when the traffic light of a crossroad is in the fixed time period.

Therefore, the other steps are not repeated here, only the details are as follows:

In the first case, when the first intersection includes a left turn traffic light, the first cross intersection is calculated according to the left turn traffic flow information of the first intersection in a fixed period of time. The flow of the traffic light is shown in Figure 6.

The method includes:

Step 610: Extract left traffic traffic information within at least two preset time periods.

Specifically, since the vehicle needs to turn left or right, the image collected from the image collector cannot be judged. Then, how to calculate the time when the traffic light is turned off when the vehicle turns to the left during a fixed period of time.

In this embodiment, the traffic flow to the left in the statistical historical time period (ie, within the preset time period) is mainly used, and then, according to the traffic flow in the historical time period, the vehicle is turned to the left during the fixed time period. The traffic lights are on and off.

Specifically, for example, when extracting from 8:00 to 8:01 every day in a month, the intersection is like the number of left traffic.

In step 620, the total traffic volume of the first intersection in a fixed time period is counted.

Specifically, the process of counting the sum of the traffic at the first intersection in a fixed time period has actually been completed in step 420. And here is just an extraction.

Step 630: Calculate a first average value of the left turn traffic flow information in at least two preset time periods.

Obviously, the daily traffic volume during the historical time period may not be exactly the same, but it will not change too much. In general, it should be based on a certain value and float above and below this value. Then, at least two preset time periods can be calculated, that is, a first average value of the left-turn traffic flow information in the historical time period. As a reference to the number of vehicles turning left during a fixed period of time. Here, the preset time period and the fixed time period are the same time period of different periods, and the preset time period is a time period within the previously occurring period. That is, for example, the time period from 8:00 am to 8:01 am every day in a month. The cycle is one day. 30 cycles per month (assuming 30 days a month). The preset time period can be understood as the time period from 8:00 to 8:01 every day in the previous month. The fixed time period is today's 8:00 to 8:01 this time period.

At step 640, a ratio between the first average and the sum of the traffic at the first intersection is calculated. And the ratio between the first average and the sum of the traffic at the first intersection is taken as the green letter ratio of the left turn to the traffic light for a fixed period of time.

Specifically, the sum of the traffic flow at a crossroad is fixed for a fixed period of time. Then, like If there is too much traffic in one direction, you can control the green light in this direction to be slightly longer according to a certain ratio. On the contrary, if the traffic volume in the other direction is slightly less, the time for the green light in this direction can be controlled to be slightly shorter according to a certain ratio. The specific implementation is based on proportional calculation. That is, the average value of the traffic flow turning to the left in the preset time period is taken as the ratio of the traffic flow to the left in the fixed time period, and the sum of the traffic flow at the first crossroad in the fixed time period, as the left turn traffic The green letter ratio of the lamp during a fixed period of time.

Step 650: Calculate the time of the left turn to the traffic light for a fixed period of time according to the green letter ratio of the left turn to the traffic light for a fixed period of time.

Specifically, the fixed time period here can also be understood as the period in which the traffic light is on and off. Generally, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute. According to the green signal ratio of the left turn to the traffic light in a fixed time period, the light-off time in the left direction in the fixed time period is calculated correspondingly, that is, the green signal ratio corresponding to the left direction is multiplied by the fixed time period, and the calculation is performed. The time when the green light in the traffic light corresponds to it. The time when the yellow light is on is basically a fixed value, for example, the fixed time period is 1 minute, and the yellow light is set to 5 seconds. Then, the remaining time in the fixed time period is the time when the red light in the first traffic light is on.

The above method of calculating the left turn traffic flow is to adopt a first average value of the left turn traffic flow during the statistical historical time period as a way of turning the left traffic flow rate into the fixed time period. And calculating the green letter ratio of the left turn to the traffic light in a fixed period of time by the ratio between the first average and the sum of the traffic at the first intersection in the fixed time period.

Preferably, in order to be able to count the left turn to the traffic flow more accurately. In order to be able to more accurately calculate the turn-off time of the left turn to the traffic light for a fixed period of time. Another embodiment can also be employed in this embodiment. Specifically, as shown in FIG. 7, the method includes:

Step 710: Receive indication information uploaded by a vehicle that is about to turn left during a fixed period of time.

Specifically, when the vehicle reaches the first crossroad, if the vehicle is about to turn left. Then, the indication information is first sent to the server. Wherein, the indication information is used to indicate that the vehicle needs to turn left.

Step 720, counting the number of vehicles that are about to turn left according to the indication information.

After receiving the indication information sent by the vehicle that is about to turn left, the server can count the number of vehicles that are about to turn left.

Step 730, calculating a ratio between the number of vehicles that are about to turn left and the sum of the traffic at the first intersection, and taking the ratio between the number of vehicles that are about to turn left and the sum of the traffic at the first intersection as a left turn traffic The green letter ratio of the lamp during a fixed period of time.

Similar to the above embodiment, in this embodiment, the ratio between the number of vehicles to be left-turned and the total traffic volume of the first intersection is statistically calculated as a left turn to the traffic light for a fixed period of time. The green letter ratio inside.

In step 740, according to the green letter ratio of the left turn to the traffic light for a fixed period of time, the time of turning off the left turn to the traffic light for a fixed period of time is calculated.

In another case, when the first intersection includes a right turn traffic light, the right turn is calculated according to the right turn traffic flow information of the first intersection in a fixed period of time. The flow of the traffic light is shown in Figure 8.

The method includes:

Step 810, extracting right turn traffic flow information within at least two preset time periods.

In step 820, the total traffic volume of the first crossroad in a fixed time period is counted.

Step 830: Calculate a second average value of right turn traffic flow information in at least two preset time periods.

At step 840, a ratio between the second average and the sum of the traffic at the first intersection is calculated. And the ratio between the second average and the sum of the traffic at the first intersection is taken as the green letter ratio of the right turn to the traffic light for a fixed period of time.

Step 850 calculates the light-off time of the right turn to the traffic light for a fixed period of time according to the green letter ratio of the right turn to the traffic light for a fixed period of time.

The above calculation process is similar to the method step of calculating the turn-off time of the left turn traffic light in a fixed period of time, and will not be described again here.

Similarly, the above method of calculating the right turn traffic is to adopt a second average value of the right turn to the traffic flow during the statistical history period as a way of turning right to the traffic flow value within a fixed time period. And calculating the green letter ratio of the right turn to the traffic light for a fixed period of time by the ratio between the second average and the sum of the traffic at the first intersection in the fixed time period.

Preferably, in order to be able to count the right turn to the traffic flow more accurately. In order to be able to more accurately calculate the turn-off time of the right turn to the traffic light for a fixed period of time. Another embodiment can also be employed in this embodiment. Specifically, as shown in FIG. 9, the method includes:

Step 910: Receive indication information uploaded by a vehicle that is about to turn right within a fixed period of time.

Specifically, when the vehicle reaches the first crossroad, if the vehicle is about to turn right. Then, the indication information is first sent to the server. Wherein, the indication information is used to indicate that the vehicle needs to turn right.

Step 920, counting the number of vehicles that are about to turn right according to the indication information.

After receiving the indication information sent by the vehicle that is about to turn right, the server can count the number of vehicles that are about to turn right.

Step 930: Calculate the ratio between the number of vehicles that are about to turn right and the sum of the traffic at the first intersection, and use the ratio between the number of vehicles that are about to turn right and the sum of traffic at the first intersection as the right turn traffic. The green letter ratio of the lamp during a fixed period of time.

Similar to the above embodiment, in this embodiment, the ratio between the number of vehicles that are about to turn right and the total traffic volume of the first intersection is counted as a right turn to the traffic light for a fixed period of time. The green letter ratio inside.

In step 940, according to the green letter ratio of the right turn to the traffic light for a fixed period of time, the time of turning off the right turn to the traffic light for a fixed period of time is calculated.

An intelligent control method for a traffic light according to an embodiment of the present invention may be different according to a direction of a traffic light. Calculate the lighting time of the traffic lights in different ways. The overall idea is to count the traffic flow information in different directions within a fixed time period, and the total traffic flow at the first crossroad. According to the ratio between the two, the green signal ratio of the traffic light in the corresponding direction is calculated, and the lighting time and the off state of the traffic light are further calculated. Through the above methods, it can be ensured that different traffic passages can be fully utilized. Moreover, traffic congestion can be minimized.

However, in any of the above embodiments, before each of the crossroads of the at least one intersection is sent to the corresponding terminal in a fixed period of time, the step A: setting the first The traffic lights at a crossroad turn off the logic.

Step B: Send the traffic light on and off to the terminal.

Wherein, when the traffic light on/off logic is used to determine that one of the first crossroads or the green light of the two parallel reverse traveling lanes is in a bright state, the red light of the other direction channels is controlled to be in a bright state. Of course, step B can be performed simultaneously with the step of "sending the off time of the traffic lights of each of the crossroads in at least one of the intersections to the corresponding terminal in a fixed period of time", that is, the time when the traffic light is turned off. And the traffic light is on and off and sent to the terminal. This ensures that different traffic lights are always working together. It is not in a state of disorder. So as not to cause the green light in different directions to be on or off at the same time. Or the unconventional phenomenon that the red light in different directions is on or off at the same time.

In addition, it should be noted that, in any of the above embodiments, only the traffic light including only one case is included in the first intersection, for example, a traffic light including only two directions of east, west, and north. Or, only include left turn and/or turn right to traffic lights and so on. However, this is merely for the convenience of the reader and does not represent the actual situation of the actual solution of the present invention. In practical applications, the above-mentioned east-west direction and north-south direction scheme can be combined with the scheme including left turn and/or right turn traffic light to form a complete scheme; or, the scheme including four directions of east, west, north and south can also be used. Combine with the left turn and / turn right to the traffic light to form a complete solution. After the combination, it is necessary to comprehensively consider all the cases listed in the above embodiments. However, the calculation is the same as the above embodiment. It is only if the above situation is included, the green letter ratio of the traffic light in each direction may be reduced.

Correspondingly, the embodiment of the invention further provides a traffic light intelligent control device. Specifically, as shown in Figure 10. FIG. 10 is a schematic structural diagram of an intelligent control device for a traffic light according to an embodiment of the present invention. In this embodiment, the description is mainly made by taking a crossroad as an example. That is to say, this embodiment is mainly directed to controlling the traffic light on and off time and the on-off state of only one intersection. Specifically, the device includes: a receiving unit 1001, a statistic unit 1002, a processing unit 1003, and a sending unit 1004.

The receiving unit 1001 is configured to receive traffic flow information sent by the first intersection in real time.

The statistics unit 1002 is configured to periodically count traffic flow information in a fixed time period of the first intersection.

The processing unit 1003 is configured to calculate, according to the traffic flow information in the fixed time period of the first crossroad, the on/off time of the traffic light of the first crossroad during the fixed time period.

The sending unit 1004 is configured to: when the traffic light of the first crossroad is in a fixed period of time They are sent to the corresponding terminals separately.

Specifically, in one case, it is assumed that the first crossroad includes a first traffic light that controls the passage of the east-west vehicle and a second traffic light that controls the traffic of the north-south direction.

Then, the statistic unit 1002 is specifically configured to separately calculate the traffic flow in the east-west direction and the traffic flow in the north-south direction in the fixed time period, and the total traffic flow at the first crossroad.

The processing unit 1003 is specifically configured to calculate a first ratio between the traffic flow in the east-west direction and the total traffic volume of the first intersection in a fixed time period, and use the first ratio as the first traffic light in the fixed time period. Green letter ratio; and according to the green signal ratio of the first traffic light in a fixed period of time, calculating the time of the first traffic light in a fixed period of time;

And calculating a second ratio between the traffic flow in the north-south direction and the sum of the traffic at the first crossroad in the fixed time period, and using the second ratio as the green signal ratio of the second traffic light in the fixed time period;

And according to the green signal ratio of the second traffic light in a fixed time period, the time of the second traffic light in the fixed time period is calculated.

The sending unit 1004 is specifically configured to: respectively, the on and off time of the first traffic light of the first crossroad in the fixed time period, and the light-off time of the second traffic light in the fixed time period Sending to the corresponding terminal, where the first crossroad intersection is any one of the at least one intersection, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.

In another case, if the first intersection includes four traffic passages of east, west, south and north, that is, when the first intersection includes at least four traffic lights of east, west, south and north, statistics The unit 1002 is specifically configured to: separately calculate the traffic flow in the east, west, south, and north directions in a fixed time period, and the total traffic flow at the first crossroad.

The processing unit 1003 is specifically configured to: separately calculate a ratio between the traffic flow in the east, west, south, and north directions in a fixed time period, and the total traffic flow at the first crossroad;

And the ratio between the traffic flow in the east, west, south and north directions in the fixed time period and the total traffic flow at the first crossroad, respectively, as the green signal of the traffic light in the corresponding direction within a fixed time period. ratio;

And according to the green light ratio of the traffic light of the corresponding direction in a fixed time period, the time of the traffic light of the corresponding direction is determined in a fixed time period.

The sending unit 1004 is specifically configured to: send, to the corresponding terminal, the lighting time of the traffic lights in the east, west, south, and north directions of the first intersection in a fixed time period to the corresponding terminal, where the first crossroad For any one of the at least one intersection, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.

In another case, if the first intersection also includes a left turn traffic light and/or a right turn traffic light, the device will also include an extraction unit 1005.

Specifically, for example, the first intersection includes a left turn to the traffic light.

Then, the extracting unit 1005 is configured to extract left turn traffic flow information within at least two preset time periods.

The statistic unit 1002 is specifically configured to: count the total traffic volume of the first intersection in a fixed time period.

The processing unit 1003 is specifically configured to: calculate a first average value of the left turn traffic flow information in at least two preset time periods; calculate a ratio between the first average value and the sum of the first crossroad traffic flow; The ratio between the average value and the sum of the traffic at the first intersection is used as the green-to-signal ratio of the left turn to the traffic light for a fixed period of time; according to the green-to-signal ratio of the left turn to the traffic light for a fixed period of time, the left is calculated. Turning to the traffic light for a fixed period of time.

The sending unit 1004 is specifically configured to send the left turn to the traffic light for a fixed time period to be sent to the terminal.

And/or, if the first intersection further includes a right turn traffic light, then the extracting unit 1005 is configured to extract right turn traffic flow information within at least two preset time periods. The statistic unit 1002 is specifically configured to: count the total traffic volume of the first intersection in a fixed time period. The processing unit 1003 is specifically configured to: calculate a second average value of the right turn traffic flow information in at least two preset time periods. Calculate the ratio between the second average and the sum of the traffic at the first intersection. And the ratio between the second average and the sum of the traffic at the first intersection is taken as the green letter ratio of the right turn to the traffic light for a fixed period of time. According to the green letter ratio of the right turn to the traffic light for a fixed period of time, calculate the time of the right turn to the traffic light for a fixed period of time. The sending unit 1004 is specifically configured to: send the left turn to the traffic light in a fixed time period to the terminal; wherein, the preset time period and the fixed time period are the same time period of different periods, and the preset time period is The first intersection is a crossroad of any one of the at least one intersection, and the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.

Preferably, in order to be able to count the left turn to the traffic flow more accurately. In order to be able to more accurately calculate the turn-off time of the left turn to the traffic light for a fixed period of time.

Then, the receiving unit 1001 is specifically configured to receive the indication information uploaded by the vehicle that is about to turn left within a fixed period of time. The statistic unit 1002 is specifically configured to: count the number of vehicles that are about to turn left according to the indication information. The processing unit 1003 is specifically configured to: calculate a ratio between the number of vehicles that are about to turn left and the total traffic of the first intersection, and compare the ratio between the number of vehicles that are about to turn left and the total traffic of the first intersection. Turn left to the green light ratio of the traffic light for a fixed period of time. According to the green letter ratio of the left turn to the traffic light for a fixed period of time, the time of turning off the traffic light to the traffic light for a fixed period of time is calculated. The sending unit 1004 is specifically configured to send the left turn to the traffic light for a fixed time period to be sent to the terminal.

And/or, the receiving unit 1001 is configured to receive indication information that is uploaded by the vehicle that is about to turn right within a fixed period of time. The statistic unit 1002 is specifically configured to: count the number of vehicles that are about to turn right according to the indication information. The processing unit 1003 is specifically configured to: calculate a ratio between the number of vehicles that are about to turn right and the total traffic volume of the first intersection, and compare the ratio between the number of vehicles that are about to turn right and the total traffic of the first intersection. Turn right to the green light ratio of the traffic light for a fixed period of time. According to the green letter ratio of the right turn to the traffic light for a fixed period of time, calculate the time of the right turn to the traffic light for a fixed period of time. The sending unit 1004 is specific For transmitting the right turn to the traffic light for a fixed time period to be sent to the terminal.

The functions performed by the components involved in the traffic light intelligent control device in the embodiments of the present invention have been described in detail in the traffic light intelligent control method of FIG. 2 to FIG. 9 , and the functions of the specific implementation can be seen in the above figures and figures. 2 to FIG. 9 corresponding to the method embodiment, which will not be repeated here.

The traffic light intelligent control device provided by the embodiment of the invention has different processing modes according to the direction of the traffic light, and can calculate the light-off time of the traffic light in different manners. The overall idea is to count the traffic flow information in different directions within a fixed time period, and the total traffic flow at the first crossroad. According to the ratio between the two, the green signal ratio of the traffic light in the corresponding direction is calculated, and the lighting time and the off state of the traffic light are further calculated. Through the above methods, it can be ensured that different traffic passages can be fully utilized. Moreover, traffic congestion can be minimized.

Further preferably, in any of the embodiments corresponding to any of the above traffic light intelligent control devices, a logic setting unit (shown as 1006 in FIG. 10) may be further included.

Specifically, a logic setting unit is configured to set a traffic light on and off logic of the first intersection;

The sending unit 1004 is further configured to send the traffic light on and off logic to the terminal, wherein the traffic light on/off logic is used to determine that one of the first crossroads or two green lights of the parallel reverse traveling lanes are in a bright state The red light of the other direction channel is on.

The logic light setting unit sets the lighting logic of the traffic light, thereby ensuring that different traffic lights are always working together. It is not in a state of disorder. So as not to cause the green light in different directions to be on or off at the same time. Or the unconventional phenomenon that the red light in different directions is on or off at the same time.

The reader should understand that in the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the embodiment or example is incorporated. The specific features, structures, materials, or characteristics described are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification and features of various embodiments or examples may be combined and combined without departing from the scope of the invention.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A traffic light intelligent control method, characterized in that the method comprises:

Receiving traffic flow information sent by the terminal corresponding to at least one intersection in real time;

Periodically counting traffic flow information during a fixed period of each of the at least one intersection;

Calculating, according to the traffic flow information in each of the at least one intersection of the at least one intersection, a traffic light of each of the at least one intersection in the fixed time period Off time

Transmitting, for each of the at least one intersection, a light-off time of the traffic light in the fixed time period to the corresponding terminal, so that the terminal controls the traffic of the corresponding at least one intersection The light is on and off and on.
The method according to claim 1, wherein when the first crossroad includes a first traffic light that controls the passage of the east-west vehicle and a second traffic light that controls the traffic of the north-south direction, according to the first cross The traffic flow information of the intersection in a fixed time period is calculated, and the time of the traffic light of the first intersection is calculated, which specifically includes:

Calculate the traffic flow in the east-west direction and the traffic flow in the north-south direction during the fixed time period, and the total traffic volume of the first crossroads;

Calculating a first ratio between a traffic flow in the east-west direction and a total traffic flow of the first crossroad in the fixed time period, and using the first ratio as the first traffic in the fixed time period Green letter ratio of the lamp;

And calculating, according to the green signal ratio of the first traffic light in the fixed time period, a lighting time of the first traffic light in the fixed time period;

And calculating a second ratio between the traffic flow in the north-south direction and the sum of the traffic at the first intersection in the fixed time period, and using the second ratio as the second traffic in the fixed time period Green letter ratio of the lamp;

And calculating, according to the green signal ratio of the second traffic light in the fixed time period, a lighting time of the second traffic light in the fixed time period, wherein the first intersection is at least The fixed time period of any one of the intersections is a preset time period value, and the preset time period value is less than or equal to 1 minute.
The method according to claim 1, wherein when the first crossroad includes a traffic light that controls traffic in four directions of east, west, south, and north, and the east-west direction vehicle travels in a parallel reverse lane The vehicle in the north-south direction calculates the light-off time of the traffic light of the first intersection according to the traffic flow information of the first intersection in a fixed time period, specifically including :

Calculating the traffic flow in the four directions of the east, west, south, and north in a fixed time period, and the total traffic volume of the first intersection;

Calculating a ratio between the traffic flow in the east, west, south, and north directions in the fixed time period, and the sum of the traffic flows at the first crossroad;

And respectively, the ratio between the traffic flow in the east, west, south, and north directions in the fixed time period and the total traffic flow of the first crossroad is used as the corresponding direction of the traffic light in the fixed Green letter ratio in the time period;

And calculating, according to the green signal ratio of the traffic light of the corresponding direction in the fixed time period, the lighting time of the corresponding direction of the traffic light in the fixed time period, wherein the first cross The intersection is any one of the at least one intersection, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.
The method according to claim 1, wherein when the first intersection includes a left-turning light traffic light, the left turn traffic flow according to the first intersection in a fixed period of time The information is calculated, and the time of turning off the traffic light turned to the left of the first intersection is calculated, which specifically includes:

Extracting left turn traffic flow information within at least two preset time periods;

Counting the total traffic volume of the first crossroad during the fixed time period;

Calculating a first average value of the left turn traffic flow information in the at least two preset time periods;

Calculating a ratio between the first average value and the sum of the first intersection traffic volumes; and using a ratio between the first average value and the sum of the first intersection traffic volumes as the left a green letter ratio to the traffic light during the fixed period of time;

Calculating a light-off time of the left turn traffic light in the fixed time period according to the green signal ratio of the left turn to the traffic light in the fixed time period;

And/or, when the first crossroad includes a right turn traffic light, calculating the first crossroad according to the right turn traffic flow information of the first crossroad for a fixed period of time The time of turning off the right traffic light, including:

Extracting right turn traffic flow information within at least two preset time periods;

Counting the total traffic volume of the first crossroad during the fixed time period;

Calculating a second average value of the right turn traffic flow information in the at least two preset time periods;

Calculating a ratio between the second average value and the sum of the traffic at the first intersection;

And comparing a ratio between the second average value and the sum of the traffic at the first intersection as a green signal ratio of the right turn traffic light in the fixed time period;

Calculating, according to the green signal ratio of the right turn to the traffic light in the fixed time period, the light-off time of the right turn traffic light in the fixed time period, wherein the preset time period and the The fixed time period is the same time period of different periods, and the preset time period is a time period within a pre-occurring period, and the first crossroad intersection is any one of at least one crossroad intersection The fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.
The method according to any one of claims 2 to 4, characterized in that the light-off time of the traffic light in each of the at least one crossroads in the fixed time period is divided Before sending to the corresponding terminal, the method further includes:

Setting a traffic light on and off at the first intersection;

And sending the traffic light on and off logic to the terminal, wherein the traffic light on/off logic is used to determine that one of the first crossroads or two green lights of the parallel reverse travel lanes are bright In the state, the red light of the other direction channel is controlled to be in a bright state.
A traffic light intelligent control device, characterized in that the device comprises:

a receiving unit, configured to receive, in real time, traffic flow information sent by a terminal corresponding to at least one intersection;

a statistical unit, configured to periodically count traffic flow information in a fixed time period of each of the at least one intersection;

a processing unit, configured to calculate, according to the traffic flow information in each of the at least one intersection, a cross-section of each of the at least one intersection, within the fixed time period The time of the traffic light is on;

a sending unit, configured to send, to each of the at least one intersection, a lighting time of the traffic light in the fixed time period to the corresponding terminal, so that the terminal controls the corresponding at least one cross The traffic light at the intersection is on and off.
The apparatus according to claim 6, wherein the statistical unit is specifically used when the first crossroad includes a first traffic light that controls the traffic of the east-west direction vehicle and a second traffic light that controls the traffic of the north-south direction vehicle. :

Calculate the traffic flow in the east-west direction and the traffic flow in the north-south direction during the fixed time period, and the total traffic volume of the first crossroads;

The processing unit is specifically configured to: calculate a first ratio between a traffic flow in the east-west direction and a total traffic flow of the first crossroad in the fixed time period, and use the first ratio as the fixed value The green signal ratio of the first traffic light during the time period;

And calculating, according to the green signal ratio of the first traffic light in the fixed time period, a lighting time of the first traffic light in the fixed time period;

And calculating a second ratio between the traffic volume in the north-south direction and the sum of the traffic at the first intersection in the fixed time period, and using the second ratio as the fixed time period, second Green light ratio of traffic lights;

And calculating, according to the green signal ratio of the second traffic light in the fixed time period, a lighting time of the second traffic light in the fixed time period; wherein the first intersection is at least Any one of the intersections, the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.
The device according to claim 6, wherein the statistical unit is specifically configured to:

Calculating the traffic flow in the four directions of the east, west, south, and north in a fixed time period, and the total traffic volume of the first intersection;

The processing unit is specifically configured to: respectively calculate a ratio between a traffic flow in four directions of the east, west, south, and north in the fixed time period, and a total traffic flow of the first crossroad;

And respectively, the ratio between the traffic flow in the east, west, south, and north directions in the fixed time period and the total traffic flow of the first crossroad is used as the corresponding direction of the traffic light in the fixed Green letter ratio in the time period;

And calculating, according to the green signal ratio of the traffic light of the corresponding direction in the fixed time period, a lighting time of the corresponding direction of the traffic light in the fixed time period; wherein the first cross The intersection is any one of the at least one intersection, and the fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.
The device according to claim 6, wherein the device further comprises:

An extracting unit, configured to extract left turn traffic flow information within at least two preset time periods;

The statistic unit is specifically configured to: calculate a total traffic volume of the first crossroad in the fixed time period;

The processing unit is specifically configured to: calculate a first average value of the left turn traffic flow information in the at least two preset time periods; calculate a sum of the first average value and the first crossroad traffic flow a ratio between the first average and the sum of the traffic at the first intersection as a green signal ratio of the left turn traffic light during the fixed time period; Turning left to the green signal ratio of the traffic light in the fixed period of time, calculating the light-off time of the left turn traffic light in the fixed time period;

And/or, the extracting unit is configured to extract right turn traffic flow information within at least two preset time periods;

The statistic unit is specifically configured to: calculate a total traffic volume of the first crossroad in the fixed time period;

The processing unit is specifically configured to: calculate a second average value of the right turn traffic flow information in the at least two preset time periods; calculate a total of the second average value and the first crossroad traffic flow a ratio between the second average and the sum of the traffic at the first intersection as a green signal ratio of the right turn to the traffic light during the fixed time period; Turning right to the green signal ratio of the traffic light in the fixed period of time, calculating a lighting time of the right turn to the traffic light in the fixed time period; wherein the preset time period and the fixed time The segment is a same time period of a different period, and the preset time period is a time period within a pre-occurring period, and the first crossroad intersection is any one of at least one crossroad intersection, The fixed time period is a preset time period value, and the preset time period value is less than or equal to 1 minute.
The device according to any one of claims 7-9, wherein the device further comprises: a logic setting unit, configured to set a traffic light on and off logic of the first intersection;

The sending unit is further configured to send the traffic light on and off logic to the terminal, wherein the traffic light on/off logic is used to determine one of the first crossroads or two parallel reverse travel channels When the green light is on, the red light of the other direction channel is controlled to be in a bright state.