CN111091725A - Crossroad traffic flow detection and signal lamp intelligent control method - Google Patents
Crossroad traffic flow detection and signal lamp intelligent control method Download PDFInfo
- Publication number
- CN111091725A CN111091725A CN201911403166.7A CN201911403166A CN111091725A CN 111091725 A CN111091725 A CN 111091725A CN 201911403166 A CN201911403166 A CN 201911403166A CN 111091725 A CN111091725 A CN 111091725A
- Authority
- CN
- China
- Prior art keywords
- time
- traffic flow
- signal lamp
- real
- east
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention provides a crossroad traffic flow detection and signal lamp intelligent control method which comprises a traffic flow detection device, a signal lamp operation strategy, a PLC and a signal lamp, wherein the traffic flow detection device mainly comprises a gantry bridge and a photoelectric switch sensor. The method can realize real-time detection of the traffic flow of the crossroad and has low cost; carry out intelligent control to the signal lamp well through the real-time data that utilizes the traffic flow, intelligent control is through going straight to the thing, the thing turns left, the real-time data of south-north straight and south-north left turn vehicle carry out the comparison after and call corresponding subprogram, can realize the nimble setting of signal lamp time under the different situation, can solve the interior vehicle of lane many or few but the problem that the signal lamp time is fixed, and can realize well that the settlement of signal lamp time changes along with the change of traffic flow figure in real time, it is more intelligent, humanized to the control of crossroad signal lamp, can improve the traffic efficiency of crossroad vehicle well.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a method for detecting traffic flow and intelligently controlling signal lamps at a crossroad.
Background
With the development of urban modernization, the development of urban economy and the improvement of the living standard of people by traffic become more and more important, so that the development of a method which can more reasonably and effectively improve the passing efficiency of crossroads is very necessary. However, the red and green time setting of the urban crossroad is basically fixed, and the unreasonable phenomena that the green direction is not provided with vehicles, the red direction is provided with more vehicles, the vehicles are provided with fewer vehicles, the time of the traffic light is long, and the traffic light control method is not flexible are often caused.
How to design a rational in infrastructure, design benefit can realize real-time detection to the traffic flow of crossroad, and is with low costs, carries out intelligent control to the signal lamp well through the real-time data that utilizes the traffic flow, can solve the interior vehicle of lane many or few but the fixed problem of signal lamp time, realizes that the settlement of signal lamp time changes with the change of traffic flow figure and periodic real-time change, the control to the crossroad signal lamp is more intelligent, humanized crossroad traffic flow detection and signal lamp intelligent control method be the problem that needs to solve at present.
Disclosure of Invention
The invention provides a crossroad traffic flow detection and signal lamp intelligent control method, which aims to solve the technical problems that the red and green lamp time of the current urban crossroad is basically fixed, the green lamp direction is not provided with vehicles, the red lamp direction is provided with more vehicles, the vehicles are provided with less vehicles, the traffic lamp time is long, the traffic lamp control method is inflexible and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows: a crossroad traffic flow detection and signal lamp intelligent control method comprises the following steps;
and 3, each operation rule of the signal lamp corresponds to a subprogram in the PLC program, when the real-time vehicle number in the lane meets a certain condition, the corresponding subprogram is called, the signal lamp operation time is set according to the corresponding subprogram, and the setting of the signal lamp time is periodically changed in real time along with the change of the vehicle flow number.
The traffic flow detection device in the step 1 comprises a gantry bridge and a plurality of photoelectric switch sensors, wherein the photoelectric switch sensors are arranged on the gantry bridge and are used for detecting real-time traffic flow in a lane.
The photoelectric switch sensor is connected with the PLC and transmits real-time traffic flow information in the lane to the PLC.
The model of the photoelectric switch sensor is E3K 100-7M.
The signal lamps in the step 2 are traffic lamps in all directions of the crossroad, and the vehicles are guided to pass through orderly by the change of the traffic lamps in all directions.
The PLC model in the step 1 is a CPU226PLC and a digital input expansion module EM 221.
Compared with the prior art, the invention has the beneficial effects that:
the traffic flow detection and signal lamp intelligent control method can detect the traffic flow of the crossroad in real time and has low cost; the method can well perform intelligent control on the intersection signal lamp by utilizing the real-time data of the traffic flow, the reasonable setting time of the signal lamp is obtained by comparing the real-time data of the east-west straight traffic, the east-west left turn, the south-north straight traffic and the south-north left turn vehicles in the intelligent control, the flexible setting of the signal lamp time under different conditions can be realized, the problem that more or less vehicles in a lane but the signal lamp time is fixed can be solved, and the periodical real-time change of the setting of the signal lamp time along with the change of the traffic flow number can be well realized. The method is more intelligent and humanized in controlling the signal lamps of the crossroad, and can well improve the passing efficiency of vehicles at the crossroad. .
Drawings
FIG. 1 is a schematic diagram of an intelligent control system according to the present invention;
FIG. 2 is a schematic view of a traffic flow detecting device according to the present invention;
FIG. 3 is a diagram of the connection between the master controller PLC and the external device according to the present invention;
the labels in the figure are: 1. the traffic flow detection device comprises a traffic flow detection device 2, a signal lamp operation program block 3, a PLC 4 and a signal lamp.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
A crossroad traffic flow detection and signal lamp intelligent control method, wherein the hardware includes the traffic flow detection device 1, signal lamp runs the program block 2, PLC3 and signal lamp 4; the traffic flow detection device 1 is composed of a gantry bridge and a plurality of photoelectric switch sensors, wherein the photoelectric switch sensors are arranged on the gantry bridge and are used for detecting real-time traffic flow in a lane; the photoelectric switch sensor in the vehicle flow detection device 1 is connected with the PLC3, and transmits the real-time vehicle flow information in the lane to the PLC3, and the PLC3 calls a corresponding subprogram to control the signal lamp 4 of the crossroad according to the real-time vehicle flow.
The signal light operation block 2 is a plurality of subroutines determined by comparing real-time data of the east-west straight-going vehicle, the east-west left-turning vehicle, the south-north straight-going vehicle and the south-north left-turning vehicle, and these subroutines are stored in the program memory of the PLC 3.
Each subprogram in the signal lamp operation program block 2 is a program which is written by comparing real-time data of vehicles running straight east and west, turning left east and west, turning straight south and north and south and left and then obtaining signal lamp setting time in a single operation cycle of the signal lamp at the crossroad.
The input end of the PLC3 receives traffic flow information transmitted by the photoelectric switch sensor, and stores a plurality of sub-programs in the signal lamp operation program block 2 in an internal program storage, and controls the change of the signal lamp 4 through the sub-programs.
Further, the operation strategy of the signal lamp operation block 2 is as follows: the signal lamp operation mechanism is as follows when the vehicle at the crossroad is assumed to normally and smoothly run: (1) the straight-going and right-turning signal lamps synchronously run; (2) straight green light operation t1s is then extinguished, and then the left-turn green lamp in the same direction as the straight line is operated t2s, starting a straight green light in the other direction after being extinguished, and circularly operating according to the rule; (3) let t be1The maximum value within a reasonable range is t1max，t2The maximum value within a reasonable range is t2max。
Further, in order to make the control strategy have general applicability, five vehicle conditions of crossroads, such as congestion, more vehicles, normal, less vehicles and less vehicles, are assumed: (1) congestion occurs when the real-time vehicle is more than 60 times in a lane in a certain direction (such as the east-west direction comprises from east to west and from west to east); (2) when the number of real-time vehicles in a lane in a certain direction is more than 40 and equal to or less than 60, the number of vehicles is more; (3) when the real-time vehicle is greater than 20 and less than or equal to 40 in a lane in a certain direction, the lane is normal; (4) when the number of real-time vehicles in a lane in a certain direction is more than 10 and less than or equal to 20, the number of vehicles is small; (5) when the real-time vehicles are larger than 0 and smaller than or equal to 10 in a lane in a certain direction, the number of the vehicles is small. Different crossroads can modify t according to actual conditions1And t2The numerical value of (2) is sufficient.
Further, Xdxzx、Xdxzz、XnbzxAnd XnbzzAnd the real-time vehicle detection values respectively represent east-west straight running, east-west left turning, south-north straight running and south-north left turning.
Further, the initial state of starting the signal lamp of the intersection is set as that the green lamp in the east-west direction is turned on, the red lamp in the north-south direction is turned on, and the operation strategy of the signal lamp of the intersection set according to the number of vehicles is as follows:
when the green light is in the east-west direction and the red light is in the north-south direction, the following 25 signal light time operation strategies are provided.
(1) When X is presentdxzx＞60，XdxzzWhen the lamp is more than 60 hours, the green lamp running time of east-west straight-going is set to
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1max(ii) a If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as (t)1max+t2max)s。
(2) When X is presentdxzx＞60，40＜XdxzzWhen the running time of the east-west straight-moving green light is less than or equal to 60, the running time of the east-west straight-moving green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1max(ii) a If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as (t)1max+t2max)s。
(3) When X is presentdxzx＞60，20＜XdxzzWhen the time is less than or equal to 40, the running time of the east-west straight green light is set to be
The left-turn green lamp operating time of the following thing after being extinguished is set to t2s, while the red lights in the south and north run times are
If it is
East-west direct running green light operation time is set to t1maxThe running time of the south and north red lamps is set as (t)1max+t2)s。
(4) When X is presentdxzx＞60，10＜XdxzzWhen the running time of the east-west straight-running green light is less than or equal to 20, the running time of the east-west straight-running green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1maxThe running time of the south and north red lamps is set as
(5) When X is presentdxzx＞60，0＜XdxzzWhen the time is less than or equal to 10, the running time of the east-west straight green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1maxThe running time of the south and north red lamps is set as
(6) When 40 < Xdxzx≤60，XdxzzWhen the lamp is more than 60 hours, the green lamp running time of east-west straight-going is set to
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1max(ii) a If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as (t)1max+t2max)s。
(7) When 40 < Xdxzx≤60，40＜XdxzzWhen the running time of the east-west straight-moving green light is less than or equal to 60, the running time of the east-west straight-moving green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1max(ii) a If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as (t)1max+t2max)s。
(8) When 40 < Xdxzx≤60，20＜XdxzzWhen the time is less than or equal to 40, the running time of the east-west straight green light is set to be
The left-turn green lamp operating time of the following thing after being extinguished is set to t2s, while the red lights in the south and north run times are
If it is
East-west direct running green light operation time is set to t1maxThe running time of the south and north red lamps is set as (t)1max+t2)s。
(9) When 40 < Xdxzx≤60，10＜XdxzzWhen the running time of the east-west straight-running green light is less than or equal to 20, the running time of the east-west straight-running green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1maxThe running time of the south and north red lamps is set as
(10) When 40 < Xdxzx≤60，0＜XdxzzWhen the time is less than or equal to 10, the running time of the east-west straight green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west direct running green light operation time is set to t1maxThe running time of the south and north red lamps is set as
(11) When 20 < Xdxzx≤40，XdxzzWhen the time is more than 60, the green light running time of the east-west straight-going is set as t1s, left-turn green lamp operating time of the following thing after being turned off is set to
While the running time of the south and north red lamps is
If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as (t)1+t2max)s。
(12) When 20 < Xdxzx≤40，40＜XdxzzWhen the running time of the east-west straight-moving green light is less than or equal to 60, the running time of the east-west straight-moving green light is set as t1s, left-turn green lamp operating time of the following thing after being turned off is set to
While the running time of the south and north red lamps is
If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as (t)1+t2max)s。
(13) When 20 < Xdxzx≤40，20＜XdxzzWhen the time is less than or equal to 40, the running time of the east-west straight green light is set as t1s, left-turn green lamp operating time of following the extinction is set to (t)2+t2) s, while the red lights in the north and south run times are (t)1+t2)s。
(14) When 20 < Xdxzx≤40，10＜XdxzzWhen the running time of the east-west straight-running green light is less than or equal to 20, the running time of the east-west straight-running green light is set as t1s, left-turn green lamp operating time of the following thing after being turned off is set to
While the running time of the south and north red lamps is
(15) When 20 < Xdxzx≤40，0＜XdxzzWhen the time is less than or equal to 10, the running time of the east-west straight green light is set as t1s, left-turn green lamp operating time of the following thing after being turned off is set to
While the running time of the south and north red lamps is
(16) When 10 < Xdxzx≤20，XdxzzWhen the lamp is more than 60 hours, the green lamp running time of east-west straight-going is set to
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as
(17) When 10 < Xdxzx≤20，40＜XdxzzWhen the running time of the east-west straight-moving green light is less than or equal to 60, the running time of the east-west straight-moving green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as
(18) When 10 < Xdxzx≤20，20＜XdxzzWhen the time is less than or equal to 40, the running time of the east-west straight green light is set to be
The left-turn green lamp operating time of the following thing after being extinguished is set to t2s, while the red lights in the south and north run times are
(19) When 10 < Xdxzx≤20，10＜XdxzzWhen the running time of the east-west straight-running green light is less than or equal to 20, the running time of the east-west straight-running green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
(20) When 10 < Xdxzx≤20，0＜XdxzzWhen the time is less than or equal to 10, the running time of the east-west straight green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
Simultaneous south and north red lightRun time of
(21) When 0 < Xdxzx≤10，XdxzzWhen the lamp is more than 60 hours, the green lamp running time of east-west straight-going is set to
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as
(22) When 0 < Xdxzx≤10，40＜XdxzzWhen the running time of the east-west straight-moving green light is less than or equal to 60, the running time of the east-west straight-moving green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
If it is
East-west left-turn green lamp operating time is set to t2maxThe running time of the south and north red lamps is set as
(23) When 0 < Xdxzx≤10，20＜XdxzzWhen the time is less than or equal to 40, the running time of the east-west straight green light is set to be
The left-turn green lamp operating time of the following thing after being extinguished is set to t2s, while the red lights in the south and north run times are
(24) When 0 < Xdxzx≤10，10＜XdxzzWhen the running time of the east-west straight-running green light is less than or equal to 20, the running time of the east-west straight-running green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
(25) When 0 < Xdxzx≤10，0＜XdxzzWhen the time is less than or equal to 10, the running time of the east-west straight green light is set to be
The left-to-green lamp operating time of the following article after being extinguished is set to
While the running time of the south and north red lamps is
And (II) when the red light is in the east-west direction and the green light is in the north-south direction, 25 signal light time operation strategies are also provided, the operation strategy method is similar to that in the step (I), and repeated description is omitted, and the operation strategy is shown in the operation strategy table 2 in detail.
Further, the operating strategy when the east-west green light is on and the south-north red light is on is shown in table 1; the operating strategy when green lights are on in the north-south direction and red lights are on in the east-west direction is shown in table 2.
TABLE 1 operation strategy when east-west green lights and south-north red lights are on
TABLE 2 operation strategy when green lights are on in south and north directions and red lights are on in east and west directions
R in tables 1 and 2 represents rules, each rule corresponding to a subroutine in the PLC program, and the corresponding subroutine is called when the number of real-time vehicles in the lane meets a certain condition, such as 40 < XdxzxLess than or equal to 60 and less than 40XdxzzWhen the condition is met at the same time of less than or equal to 60, calling a subprogram R7; when 20 < XnbzxLess than or equal to 40 and less than 10XnbzzWhen the condition is satisfied at the same time, less than or equal to 20, the subprogram R39 is called. The writing of the subprogram is easy to implement and is not described here.
And thirdly, when the east-west green light is turned off, the corresponding control strategy is called according to the actual conditions of the vehicles in the south-north lanes.
The PLC receives traffic flow information transmitted by the photoelectric switch sensor at the input end of the PLC, stores a plurality of subprograms in a signal lamp operation strategy in a program storage inside the PLC, and controls the signal lamp through the subprograms.
The signal lamps are traffic lamps in all directions at the crossroad, and the vehicles are guided to pass through orderly by the change of the traffic lamps in all directions.
The model of the photoelectric switch sensor is E3K 100-7M; the PLC model is CPU226PLC and digital input extension module EM 221.
Furthermore, 32 photoelectric switch sensors are required to be arranged above the straight-going lane and the left-turning lane at the intersection, and only 24 digital input terminals of the CPU226PLC do not meet the requirement, so the input expansion module EM221 with 16 digital input terminals is selected.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent control system of the present invention, and in the diagram, a crossroad traffic flow detection and signal lamp intelligent control method includes a traffic flow detection device, a signal lamp operation strategy, and a PLC signal lamp. The traffic flow detection device is composed of a gantry bridge and a plurality of photoelectric switch sensors, the photoelectric switch sensors are installed on the gantry bridge and used for detecting real-time traffic flow in a lane and transmitting the real-time traffic flow information in the lane to the PLC, and the PLC calls corresponding sub-programs to control signal lamps of the crossroads according to the real-time traffic flow.
Furthermore, the PLC program compares real-time data of the vehicle which runs straight east and west, turns left east and west, turns straight south and north and south and left to obtain reasonable setting time of the signal lamp, and then control over the signal lamp is achieved.
Referring to fig. 2, fig. 2 is a schematic view of the traffic flow detection device, in which M, n, p and q are gantry bridges crossing a road, A, A ', B, B', C, C ', D and D' are switch type photoelectric switch sensors (photoelectric switch sensors, model E3K100-7M, detection distance is 7M) installed on the gantry bridges, 1 and 3 are standard parking spaces of left-turn lane cars, and 2 and 4 are standard parking spaces of straight lane cars. The detection principle is explained by taking an example of installing a photoelectric switch to detect a car in a left-turning direction and a straight-going direction in a certain direction (other vehicles with lengths larger than that of the car are also suitable for the detection principle), the length of a common car is about 4.8 meters, so the distance between AA ', BB', CC 'and DD' is set to be 4 meters (theoretically, the distance is smaller than 4.8 meters, and the selected data is smaller to ensure the accuracy of detection signals), only when the two photoelectric switch sensors of A, A ', B', C ', D and D' detect the car simultaneously, the car is effective vehicle signals, and the counting of the car is realized easily by applying a counter in a PLC program. The number of vehicles exiting the lane in the left-turn lane is realized by the two photoelectric switches A and A ', the number of vehicles entering the lane in the left-turn lane is realized by the two photoelectric switches C and C', and the number of vehicles entering the lane minus the number of vehicles exiting the lane is the real-time number of vehicles in the left-turn lane; similarly, B ', D and D' are used for realizing the detection of the number of vehicles in the straight lane in real time. Typically, the first vehicle in the lane will have about 4s from start-up to crossing, and the following vehicle will pass the crossing about 1s later than the preceding vehicle. The distance between m and q can be set according to the actual conditions of different road sections, and at least the distance greater than the distance of the crossroad under the condition that more vehicles in all directions are jammed is ensured, so that the universal applicability of the vehicle number detection method can be ensured.
Referring to fig. 3, fig. 3 is a wiring diagram of the main controller PLC and the external device of the present invention, in which the EM221 is directly connected to the CPU226 through an interface, and the diagram shows the input signal and the output signal of the CPU226, where the input signal includes SA, a start switch and 32 photoelectric switch sensors S, which are respectively used for the start of the intelligent control system and the real-time detection of the traffic flow in the crossroad lane; the output signal is a traffic light at the crossroad for correctly guiding the vehicle to pass. All of the 32 photoelectric switching sensors S are not shown in the drawing, and are replaced with ellipses. The subprogram of the control signal lamp is stored in a data memory of the PLC, when the photoelectric switch detects that the traffic flow in each lane is transmitted to the PLC, the PLC judges which subprogram needs to be called through the program according to real-time vehicle information, and therefore reasonable control over the intersection signal lamp is achieved.
The traffic light intelligent control system is reasonable in structure and ingenious in design, can realize real-time detection on the traffic flow of the crossroads, is low in cost, well and intelligently controls the signal lights by utilizing real-time data of the traffic flow, and solves the technical problems that at present, the red and green light time of the crossroads of the city is basically fixed, the green light direction is not provided with vehicles, the red light direction is provided with more vehicles, the number of vehicles is less, the traffic light time is long, the traffic light control method is not flexible, and the like.
The preferred embodiments and examples of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments and examples described above, and various changes can be made within the knowledge of those skilled in the art without departing from the concept of the present invention.
Claims (6)
1. A crossroad traffic flow detection and signal lamp intelligent control method is characterized by comprising the following steps;
step 1, detecting real-time traffic flow in a lane by a traffic flow detection device, and transmitting real-time traffic flow information in the lane to a PLC;
step 2, the input end of the PLC receives traffic flow information transmitted by the traffic flow detection device, and controls the change of the signal lamp through a plurality of subprograms of an internal signal lamp operation program block, specifically: the signal lamp operation program block compares real-time data of vehicles which go straight east and west, turn left east and west, turn straight south and north and south and left to determine a plurality of subprograms, each subprogram corresponds to a signal lamp at the intersection in a single operation cycle, and signal lamp setting time is obtained by comparing the real-time data of the vehicles which go straight east and west, turn left east and west, turn straight south and north and south and left;
and 3, each operation rule of the signal lamp corresponds to a subprogram in the PLC program, when the real-time vehicle number in the lane meets a certain condition, the corresponding subprogram is called, the signal lamp operation time is set according to the corresponding subprogram, and the setting of the signal lamp time is periodically changed in real time along with the change of the vehicle flow number.
2. The method for detecting the traffic flow and intelligently controlling the signal lamps at the crossroad according to claim 1, wherein the method comprises the following steps: the traffic flow detection device in the step 1 comprises a gantry bridge and a plurality of photoelectric switch sensors, wherein the photoelectric switch sensors are arranged on the gantry bridge and are used for detecting real-time traffic flow in a lane.
3. The method for detecting the traffic flow and intelligently controlling the signal lamps at the crossroad as claimed in claim 2, wherein: the photoelectric switch sensor is connected with the PLC and transmits real-time traffic flow information in the lane to the PLC.
4. The method for detecting the traffic flow and intelligently controlling the signal lamps at the crossroad as claimed in claim 3, wherein: the model of the photoelectric switch sensor is E3K 100-7M.
5. The method for detecting the traffic flow and intelligently controlling the signal lamps at the crossroad according to claim 1, wherein the method comprises the following steps: the signal lamps in the step 2 are traffic lamps in all directions of the crossroad, and the vehicles are guided to pass through orderly by the change of the traffic lamps in all directions.
6. The method for detecting the traffic flow and intelligently controlling the signal lamps at the crossroad according to claim 1, wherein the method comprises the following steps: the PLC model in the step 1 is a CPU226PLC and a digital input expansion module EM 221.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911403166.7A CN111091725A (en) | 2019-12-31 | 2019-12-31 | Crossroad traffic flow detection and signal lamp intelligent control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911403166.7A CN111091725A (en) | 2019-12-31 | 2019-12-31 | Crossroad traffic flow detection and signal lamp intelligent control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111091725A true CN111091725A (en) | 2020-05-01 |
Family
ID=70398104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911403166.7A Pending CN111091725A (en) | 2019-12-31 | 2019-12-31 | Crossroad traffic flow detection and signal lamp intelligent control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111091725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113240905A (en) * | 2021-05-12 | 2021-08-10 | 江苏东交智控科技集团股份有限公司 | Intelligent timing traffic signal lamp and signal lamp duration control method |
| CN113570881A (en) * | 2021-07-22 | 2021-10-29 | 芜湖雄狮汽车科技有限公司 | Signal lamp control method and device, electronic equipment and storage medium |
| CN114220280A (en) * | 2021-12-12 | 2022-03-22 | 李会江 | Controllable traffic signal lamp for man and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205050347U (en) * | 2015-10-27 | 2016-02-24 | 哈尔滨理工大学 | Intelligence time delay traffic signal lamp system based on PLC control |
| CN105679050A (en) * | 2016-03-23 | 2016-06-15 | 安徽机电职业技术学院 | Intelligent traffic signal lamp control system |
| CN206097477U (en) * | 2016-10-13 | 2017-04-12 | 南京信息工程大学 | Crossroad traffic light control system based on vehicle flowrate |
| EP3267418A1 (en) * | 2016-07-06 | 2018-01-10 | Volvo Car Corporation | A method for performing a real time analysis of traffic light related data |
| CN109785645A (en) * | 2019-03-04 | 2019-05-21 | 南京信息职业技术学院 | A kind of algorithm adjusting traffic lights duration according to vehicle flowrate dynamic |
-
2019
- 2019-12-31 CN CN201911403166.7A patent/CN111091725A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205050347U (en) * | 2015-10-27 | 2016-02-24 | 哈尔滨理工大学 | Intelligence time delay traffic signal lamp system based on PLC control |
| CN105679050A (en) * | 2016-03-23 | 2016-06-15 | 安徽机电职业技术学院 | Intelligent traffic signal lamp control system |
| EP3267418A1 (en) * | 2016-07-06 | 2018-01-10 | Volvo Car Corporation | A method for performing a real time analysis of traffic light related data |
| CN206097477U (en) * | 2016-10-13 | 2017-04-12 | 南京信息工程大学 | Crossroad traffic light control system based on vehicle flowrate |
| CN109785645A (en) * | 2019-03-04 | 2019-05-21 | 南京信息职业技术学院 | A kind of algorithm adjusting traffic lights duration according to vehicle flowrate dynamic |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113240905A (en) * | 2021-05-12 | 2021-08-10 | 江苏东交智控科技集团股份有限公司 | Intelligent timing traffic signal lamp and signal lamp duration control method |
| CN113240905B (en) * | 2021-05-12 | 2022-07-22 | 江苏东交智控科技集团股份有限公司 | Intelligent timing traffic signal lamp and signal lamp duration control method |
| CN113570881A (en) * | 2021-07-22 | 2021-10-29 | 芜湖雄狮汽车科技有限公司 | Signal lamp control method and device, electronic equipment and storage medium |
| CN114220280A (en) * | 2021-12-12 | 2022-03-22 | 李会江 | Controllable traffic signal lamp for man and vehicle |
| CN114220280B (en) * | 2021-12-12 | 2023-10-13 | 李会江 | Controllable traffic signal lamp for man and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111091725A (en) | Crossroad traffic flow detection and signal lamp intelligent control method | |
| CN100397435C (en) | Crossroads traffic management control system | |
| CN104269065B (en) | Two-way road and the one way traffic crossing optimization method with reverse public transportation lane | |
| WO2013026265A1 (en) | Intersection traffic control system and method | |
| CN205050347U (en) | Intelligence time delay traffic signal lamp system based on PLC control | |
| CN110047301B (en) | System and method for detecting and controlling left-turning vehicles at intelligent intersection of urban expressway | |
| CN108389400B (en) | Control method for utilizing left turn of straight lane on right side of intersection | |
| CN108171979B (en) | Tramcar all-day operation time optimization method and system | |
| CN1407518A (en) | Traffic signal guidance devices | |
| CN111951571A (en) | System and method for dredging congested vehicles on road section under traffic accident | |
| CN106683448B (en) | Road signal lamp control system based on CPS and method thereof | |
| CN104064039B (en) | A kind of crossroad traffic signal lamp intelligence timing method | |
| CN108457144A (en) | A kind of application method of continuous flow intersection | |
| CN202771628U (en) | Road intersection traffic signal lamp intelligent control system | |
| CN103498394A (en) | Planar road network system for motor vehicles | |
| CN202795760U (en) | An intersection passage system capable of transforming the lane turning functions within a single signal period | |
| CN104050820B (en) | The method for controlling traffic signal lights of multi signal switching is realized based on composite channel | |
| CN201616185U (en) | Control system for no-parking traffic signal lamp for main road | |
| CN101064064A (en) | Traffic signal apparatus | |
| CN203311637U (en) | Intelligent traffic signal lamp control system | |
| CN102930736B (en) | The display packing of traffic signal control information and system | |
| CN202688808U (en) | Left turn system for non-power-driven vehicles at crossroad | |
| CN108166342A (en) | The vehicle shunting linking traffic system and control method of city road crossing | |
| CN112907996A (en) | Traffic control method and system for straight right lane | |
| CN102222409A (en) | Traffic light with voice prompt function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200501 |