阅读说明：本技术 一种智能交通信号灯防拥堵的方法及装置 (Method and device for preventing congestion of intelligent traffic signal lamp ) 是由 郑伟 张哲� 周珂 王兵锐 刘洋 马晓普 王保平 于 2020-04-29 设计创作，主要内容包括：本发明公开了一种智能交通信号灯防拥堵的方法及装置,包括服务器、车流量监测模块、车流量预测模块、交通拥堵预测模块、信号灯控制调度模块和信号灯模块,所述车流量监测模块对交叉路口车辆的车型信息、车辆行驶速度信息、道路车流量信息和停车线等待车辆数量进行采集,所述车流量预测模块和交通拥堵预测模块对车流量监测模块所监测数据进行分析处理,并得到结果,信号灯控制调度模块实现调度,本发明是一种智能交通信号灯防拥堵的方法及装置,通过车流量监测模块实时多方位的检测车流量信息,实现对实时车流量预测和交通拥堵预测,当车流量小时缩短绿灯时间,当车流量大时延长绿灯时间,降低交通堵塞现象的发生概率。(The invention discloses a method and a device for preventing congestion by an intelligent traffic signal lamp, which comprises a server, a traffic flow monitoring module, a traffic flow prediction module, a traffic congestion prediction module, a signal lamp control scheduling module and a signal lamp module, wherein the traffic flow monitoring module collects vehicle type information, vehicle running speed information, road traffic flow information and the number of vehicles waiting for a stop line of a vehicle at an intersection, the traffic flow prediction module and the traffic congestion prediction module analyze and process data monitored by the traffic flow monitoring module and obtain results, and the signal lamp control scheduling module realizes scheduling. When the traffic flow is large, the green time is prolonged, and the occurrence probability of the traffic jam phenomenon is reduced.)

1. The utility model provides a device that intelligent traffic signal lamp prevents blocking up which characterized in that: comprises a server, a traffic flow monitoring module, a traffic flow prediction module, a traffic jam prediction module, a signal lamp control scheduling module and a signal lamp module, the traffic flow monitoring module collects the vehicle type information, the vehicle running speed information, the road traffic flow information and the number of vehicles waiting for the stop line of the vehicle at the intersection, the traffic flow prediction module and the traffic jam prediction module analyze and process the data monitored by the traffic flow monitoring module, and obtaining the result, the signal lamp control scheduling module prolongs the green light duration of the east-west driving and shortens the green light duration of the south-north driving or prolongs the green light duration of the south-north driving and shortens the green light duration of the east-west driving according to the analysis and processing result, according to the actual conditions of the traffic intersection, the manual control module is used for prolonging the duration of the east-west driving green light to shorten the duration of the south-north driving green light or prolonging the duration of the south-north driving green light to shorten the duration of the east-west driving green light.

2. The intelligent traffic signal light anti-congestion device as claimed in claim 1, wherein: the traffic flow monitoring module comprises: a magnetic induction coil detection device, a video image detection device and an upper road junction video image detection device, the magnetic induction coil detection device comprises three geomagnetic induction coils 1, 2 and 3 with the same specification, the geomagnetic induction coil 1 is positioned at the inner side of a waiting line of a traffic lane, the straight-line distance between the geomagnetic induction coil 1 and the geomagnetic induction coil 2 is 6-8 meters, the linear distance between the geomagnetic induction coil 2 and the geomagnetic induction coil 3 is 6-8 m, the video image detection device consists of a camera, a light supplement lamp and a velometer, the traffic flow monitoring module is electrically connected with the server, the magnetic induction coil detection device is connected with the traffic flow monitoring module through a wireless signal, the video image detection device is electrically connected with the traffic flow monitoring module, and the video image detection device of the last road junction is identical to the video image detection device in structure.

3. The intelligent traffic signal light anti-congestion device as claimed in claim 1, wherein: the traffic flow prediction module adopts a wavelet neural network algorithm, the wavelet neural network algorithm consists of wavelet analysis and neural network prediction, the traffic flow prediction module firstly extracts characteristic vectors of experimental data through the wavelet analysis, the extracted characteristic vectors are used as input vectors of a second part, then network training is carried out through the neural network, weight is adjusted through forward and backward propagation, and finally construction of the wavelet neural network is achieved, the traffic flow prediction module detects traffic flow data of five periods at main traffic road intersections through a traffic flow monitoring module, and the traffic flow prediction process of the wavelet neural network is as follows: the method comprises the steps of system modeling, construction of a proper wavelet neural network, initialization of the wavelet neural network, training completion, testing of the wavelet neural network and completion, wherein the traffic flow monitoring module is used for providing five periods of traffic flow data, providing three periods of traffic flow data for wavelet neural network training and providing two periods of traffic flow data for wavelet neural network testing.

4. The intelligent traffic signal light anti-congestion device as claimed in claim 1, wherein: the traffic jam prediction module adopts a cusp mutation theoretical algorithm, and the traffic jam prediction module obtains the following data according to the cusp mutation theoretical algorithm:

(1) the critical point density pveh/km of the vehicle in the congested state,

(2) critical point speed mu ㎞/h of vehicle in occurrence of congestion state

The traffic jam prediction module detects the speed of vehicles, the number of the vehicles and the waiting length of the vehicles on a traffic road in real time according to the traffic flow monitoring module to obtain the density and the speed of critical points of jammed vehicles in real time.

5. The intelligent traffic signal lamp anti-congestion method and device according to claim 1, wherein: the signal lamp control and dispatching module is controlled by automatic control and manual control, the signal lamp control and dispatching module defaults to be in an automatic control mode, if the signal lamp control and dispatching module is started by manual control, the automatic control mode is closed, and the manual control mode is prior.

6. The intelligent traffic signal light anti-congestion device as claimed in claim 1 or 5, wherein: the signal lamp control and scheduling module adopts an automatic control mode, judges whether a traffic jam critical value is reached according to the data of the traffic jam prediction module and the traffic flow monitoring module, if the traffic jam critical value is reached in the east-west driving direction, the duration of a green lamp in the east-west driving direction reaching the traffic critical value is prolonged, the duration of a red lamp in the south-north driving direction is prolonged to relieve the traffic jam phenomenon, if the traffic jam critical value is not reached in the east-west driving direction, the traffic flow, the number of vehicles waiting for a stop line and the traffic flow of a previous video image detection device are detected according to the traffic flow monitoring module, and meanwhile, when the vehicle is detected to be zero or the traffic flow is small according to the magnetic induction coil 3, the duration of a green lamp in the east-west driving direction is shortened, and the duration of a red lamp in the south-.

7. The method for preventing the intelligent traffic signal lamp from being jammed is characterized by comprising the following steps of:

the first step is as follows: the traffic flow monitoring module works, and detects the number of waiting vehicles in the stop line in real time through three geomagnetic induction coils in the magnetic induction coil detection device, namely the length of the waiting vehicles in the stop line, and simultaneously detects the traffic flow of the passing vehicles; the video image detection device detects the passing vehicle type, the vehicle flow and the vehicle speed through a camera, a light supplement lamp and a velometer, and stores data in a server, and simultaneously detects the vehicle flow and the vehicle speed through the previous road junction by combining with the previous road junction video image detection device;

the second step is that: the traffic flow prediction module predicts the traffic flow of each time period through a wavelet neural network algorithm, extracts data of five weeks according to the detection data of the traffic flow monitoring module, guides the monitoring data of the first three weeks into the wavelet neural network algorithm to train the wavelet neural network algorithm, and performs accurate determination of the detection wavelet neural network algorithm through the monitoring data of the second two weeks;

the third step: the traffic jam prediction module calculates a critical point density value and a critical point speed value of the traffic flow causing traffic jam at a traffic intersection in real time through a sharp point mutation theoretical algorithm, the critical point density value and the critical point speed value are used as a judgment basis of the signal lamp scheduling control module, data analysis is carried out on the traffic flow monitoring module, and data of the traffic flow monitoring module are analyzed and processed in the critical point of the traffic flow causing traffic jam;

The fourth step: the signal lamp dispatching control module is divided into an automatic control mode and a manual control mode, the signal lamp dispatching control module defaults to the automatic control mode, if the automatic control mode is closed after the manual control is started, the manual control mode is prior, if the manual control mode is closed, the signal lamp dispatching control module is in the automatic control mode, whether the traffic jam critical value is reached is judged according to the data of the traffic jam prediction module and the traffic flow monitoring module, if the traffic jam critical value is reached in the east-west driving direction, the green light duration in the east-west driving direction reaching the traffic critical value is prolonged, meanwhile, the red light duration in the south-north driving direction is prolonged to relieve the traffic jam phenomenon, if the traffic jam critical value is not reached in the east-west driving direction, if the east-west driving direction reaches the traffic jam critical value, the number of waiting vehicles in a parking line is less through a geomagnetic induction coil monitoring device, when monitoring vehicle flow is less, and combine last crossing video image detection device to detect vehicle flow size, it is long when the adjustment shortens the green lamp of east and west driving direction, it is long when the green lamp of north and south driving direction is prolonged, if, it is more that the east and west driving direction passes through earth induction coil monitoring vehicle waiting in the stop line, it is more to wait for the vehicle in the stop line simultaneously through video image detection device verification, combine last crossing video image detection device to detect flow size, it is long when the green lamp of east and west driving direction is prolonged, it is long when the red lamp of north and south driving direction is prolonged.

Technical Field

The invention relates to the technical field of intelligent traffic signal lamps, in particular to a method and a device for preventing congestion of an intelligent traffic signal lamp.

Background

Along with the continuous promotion of people's economic condition, the use of vehicle is more and more, and traffic signal lamp plays the effect of mediation traffic, and traffic jam phenomenon is avoided in traffic signal lamp's use, reduces the emergence of traffic accident simultaneously.

At present, traffic lights arranged at each intersection in a domestic city are almost fixed in duration, namely, the duration of the traffic lights arranged at the intersections is fixed and unchanged, the duration is generally set according to the average traffic flow of the roads, and once the setting is finished, the traffic lights cannot be easily changed within a long time, namely, no matter what kind of change is brought to the traffic flow of the intersection of the road due to any factors, for example, the traffic flow of the intersection is temporarily increased due to abnormal conditions such as road repair and damage of other roads, the duration of the traffic lights at the intersection cannot be changed, the traffic flow in each time period is different in actual conditions, the traffic flow in the east-west driving direction and the south-north driving direction is different, the waiting time is longer, and no vehicle passes through the intersection, and finally traffic jam is caused.

Disclosure of Invention

The invention aims to solve the problems and provides a method and a device for preventing congestion of an intelligent traffic signal lamp.

In order to achieve the purpose, the invention provides the following technical scheme: comprises a server, a traffic flow monitoring module, a traffic flow prediction module, a traffic jam prediction module, a signal lamp control scheduling module and a signal lamp module, the traffic flow monitoring module collects the vehicle type information, the vehicle running speed information, the road traffic flow information and the number of vehicles waiting for the stop line of the vehicle at the intersection, the traffic flow prediction module and the traffic jam prediction module analyze and process the data monitored by the traffic flow monitoring module, and obtaining the result, the signal lamp control scheduling module prolongs the green light duration of the east-west driving and shortens the green light duration of the south-north driving or prolongs the green light duration of the south-north driving and shortens the green light duration of the east-west driving according to the analysis and processing result, according to the actual conditions of the traffic intersection, the manual control module is used for prolonging the duration of the east-west driving green light to shorten the duration of the south-north driving green light or prolonging the duration of the south-north driving green light to shorten the duration of the east-west driving green light.

Preferably, the traffic flow monitoring module includes: the device comprises a magnetic induction coil detection device, a video image detection device and a previous intersection video image detection device, wherein the magnetic induction coil detection device comprises a geomagnetic induction coil 1, a geomagnetic induction coil 2 and a geomagnetic induction coil 3 which are the same in specification, the geomagnetic induction coil 1 is positioned on the inner side of a waiting line of a traffic lane, the linear distance between the geomagnetic induction coil 1 and the geomagnetic induction coil 2 is 6-8 meters, the linear distance between the geomagnetic induction coil 2 and the geomagnetic induction coil 3 is 6-8 meters, the video image detection device comprises a camera, a light supplement lamp and a velometer, a traffic flow monitoring module is electrically connected with a server, the magnetic induction coil detection device is connected with the traffic flow monitoring module through a wireless signal, and the video image detection device is electrically connected with the traffic flow monitoring module, the structure of the previous road junction video image detection device is the same as that of the video image detection device.

Preferably, the traffic flow prediction module adopts a wavelet neural network algorithm, the wavelet neural network algorithm consists of wavelet analysis and neural network prediction, the wavelet analysis is firstly used for extracting a characteristic vector of experimental data, the extracted characteristic vector is used as an input vector of a second part, then the neural network is used for network training, weight is adjusted through forward and backward propagation, and finally the construction of the wavelet neural network is realized, the traffic flow monitoring module is used for detecting the traffic flow data of five periods at the intersection of a main traffic road, and the wavelet neural network traffic flow prediction process is as follows: the method comprises the steps of system modeling, construction of a proper wavelet neural network, initialization of the wavelet neural network, training completion, testing of the wavelet neural network and completion, wherein the traffic flow monitoring module is used for providing five periods of traffic flow data, providing three periods of traffic flow data for wavelet neural network training and providing two periods of traffic flow data for wavelet neural network testing.

Preferably, the traffic congestion prediction module adopts a cusp mutation theoretical algorithm, and the traffic congestion prediction module obtains, according to the cusp mutation theoretical algorithm:

(1) the critical point density pveh/km of the vehicle in the congested state,

(2) Critical point speed mu ㎞/h of vehicle in occurrence of congestion state

The method comprises the steps of detecting the speed of vehicles, the number of the vehicles and the waiting length of the vehicles on a traffic road in real time according to a traffic flow monitoring module to obtain the density and the speed of critical points of the vehicles jammed in real time.

Preferably, the signal lamp control and scheduling module is controlled by automatic control and manual control, the signal lamp control and scheduling module defaults to an automatic control mode, and if the signal lamp control and scheduling module is controlled by manual control to be started, the automatic control mode is closed, and the manual control mode is preferred.

Preferably, the signal lamp control and scheduling module adopts an automatic control mode, whether the traffic jam critical value is reached is judged according to the data of the traffic jam prediction module and the traffic flow monitoring module, if the traffic jam critical value is reached in the east-west driving direction, the green lamp duration in the east-west driving direction reaching the traffic critical value is prolonged, meanwhile, the red lamp duration in the south-north driving direction is prolonged to relieve the traffic jam phenomenon, if the traffic jam critical value is not reached in the east-west driving direction, the traffic flow, the number of vehicles waiting for a stop line and the traffic flow of a previous video image detection device are detected according to the traffic flow monitoring module, meanwhile, the green lamp duration in the east-west driving direction is shortened, and meanwhile, the red lamp duration in the south-north driving direction is shortened according to the fact that the magnetic induction coil 3 detects that the vehicles are zero or the traffic flow is small.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to a method and a device for preventing congestion of an intelligent traffic signal lamp, which are used for realizing real-time traffic flow prediction and traffic congestion prediction by detecting traffic flow information in real time in multiple directions through a traffic flow monitoring module, calculating a congestion critical value, shortening green time when the traffic flow is small, prolonging the green time when the traffic flow is large and reducing the occurrence probability of traffic congestion.

Drawings

Fig. 1 is a schematic diagram of a method and a device for preventing congestion of an intelligent traffic signal lamp according to the present invention.

Fig. 2 is a schematic diagram of a traffic flow monitoring module of the method and device for preventing congestion of the intelligent traffic signal lamp.

FIG. 3 is a schematic diagram of a traffic flow prediction module of the method and apparatus for preventing traffic congestion of an intelligent traffic signal lamp according to the present invention.

FIG. 4 is a schematic diagram of a traffic jam prediction module according to the method and apparatus for preventing traffic jams of an intelligent traffic signal lamp.

FIG. 5 is a schematic diagram of a signal lamp scheduling control module of the method and apparatus for preventing traffic congestion of an intelligent traffic signal lamp according to the present invention.

FIG. 6 is a flowchart of a traffic flow prediction module and a method for preventing congestion by using an intelligent traffic signal lamp according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the traffic flow monitoring module collects vehicle type information, vehicle running speed information, road vehicle flow information and the number of vehicles waiting for a stop line of a crossroad, the vehicle flow prediction module and the traffic congestion prediction module analyze and process data monitored by the vehicle flow monitoring module and obtain results, the signal lamp control scheduling module prolongs the duration of east-west driving green lamps and shortens the duration of south-north driving green lamps or prolongs the duration of south-north driving green lamps and shortens the duration of east-west driving green lamps according to the analysis and processing results, and the manual control module realizes the purposes of prolonging the duration of east-west driving green lamps and shortening the duration of south-north driving green lamps or prolonging the duration of south-north driving green lamps and shortening the duration of east-west driving green lamps according to the actual conditions of a traffic intersection, the traffic flow monitoring module comprises: the device comprises a magnetic induction coil detection device, a video image detection device and an upper intersection video image detection device, wherein the magnetic induction coil detection device comprises a geomagnetic induction coil 1, a geomagnetic induction coil 2 and a geomagnetic induction coil 3 which are the same in specification, the geomagnetic induction coil 1 is positioned on the inner side of a lane waiting line, the linear distance between the geomagnetic induction coil 1 and the geomagnetic induction coil 2 is 6-8 meters, the linear distance between the geomagnetic induction coil 2 and the geomagnetic induction coil 3 is 6-8 meters, the video image detection device comprises a camera, a light supplement lamp and a velometer, a traffic flow monitoring module is electrically connected with a server, the magnetic induction coil detection device is connected with the traffic flow monitoring module through a wireless signal, the video image detection device is electrically connected with the traffic flow monitoring module, and the upper intersection video image detection device is the same in structure as the video image detection device, the traffic flow prediction module adopts a wavelet neural network algorithm, the wavelet neural network algorithm consists of wavelet analysis and neural network prediction, the traffic flow prediction module firstly extracts characteristic vectors of experimental data through the wavelet analysis, the extracted characteristic vectors are used as input vectors of a second part, then network training is carried out through the neural network, weight is adjusted through forward and backward propagation, and finally construction of the wavelet neural network is achieved, the traffic flow monitoring module detects traffic flow data of five periods at main traffic road intersections, and the wavelet neural network traffic flow prediction process is as follows: the traffic congestion prediction method comprises the following steps of system modeling, construction of a proper wavelet neural network, wavelet neural network initialization, wavelet neural network training, training ending, wavelet neural network testing and ending, wherein the traffic monitoring module is used for five periods of traffic data, providing three periods of traffic data for wavelet neural network training, providing two periods of traffic data for wavelet neural network testing, the traffic congestion prediction module adopts a cusp mutation theoretical algorithm, and the traffic congestion prediction module is obtained according to the cusp mutation theoretical algorithm:

(1) The critical point density pveh/km of the vehicle in the congested state,

(2) critical point speed mu ㎞/h of vehicle in occurrence of congestion state

The signal lamp control scheduling module is controlled by automatic control and manual control, defaults to an automatic control mode, if the automatic control mode is closed after the manual control is started, the manual control mode is preferred, the signal lamp control scheduling module adopts the automatic control mode, judges whether the traffic jam critical value is reached according to the data of the traffic jam prediction module and the traffic flow monitoring module, if the traffic jam critical value is reached in the east-west traffic direction, the green lamp duration in the east-west traffic direction reaching the traffic critical value is prolonged, meanwhile, the red lamp duration in the south-traffic direction is prolonged to relieve the traffic jam phenomenon, and if the traffic jam critical value is not reached in the east-west traffic direction, and then according to the detection value of the traffic flow monitoring module, the traffic flow, the number of vehicles waiting for the stop line and the traffic flow of the last video image detection device, when the detection result of the geomagnetic induction coil 3 shows that the vehicle is zero or the traffic flow is small, the duration of green lights in the east-west driving direction is shortened, and the duration of red lights in the north-south driving direction is shortened.

Carrying out the step

The first step is as follows: the traffic flow monitoring module works, and detects the number of waiting vehicles in the stop line in real time through three geomagnetic induction coils in the magnetic induction coil detection device, namely the length of the waiting vehicles in the stop line, and simultaneously detects the traffic flow of the passing vehicles; the video image detection device detects the passing vehicle type, the vehicle flow and the vehicle speed through the camera, the light supplement lamp and the velometer, and stores data in the server, and simultaneously detects the vehicle flow and the vehicle speed through the previous road junction by combining the previous road junction video image detection device.

The second step is that: the traffic flow prediction module predicts the traffic flow of each time period through a wavelet neural network algorithm, extracts data of five weeks according to the detection data of the traffic flow monitoring module, guides the monitoring data of the first three weeks into the wavelet neural network algorithm to train the wavelet neural network algorithm, and accurately determines the detection wavelet neural network algorithm through the monitoring data of the second two weeks, wherein the accuracy rate of the experiment reaches 87.69%.

The third step: the traffic jam prediction module calculates the critical point density value and the critical point speed value of the traffic flow causing traffic jam at the traffic intersection in real time through a sharp point mutation theoretical algorithm to serve as a judgment basis of the signal lamp scheduling control module, performs data analysis on the traffic flow monitoring module, and analyzes and processes the data of the traffic flow monitoring module in the critical point of the traffic flow causing traffic jam.

The fourth step: the signal lamp dispatching control module is divided into an automatic control mode and a manual control mode, the signal lamp dispatching control module defaults to the automatic control mode, if the automatic control mode is closed after the manual control is started, the manual control mode is prior, if the manual control mode is closed, the signal lamp dispatching control module is in the automatic control mode, whether the traffic jam critical value is reached is judged according to the data of the traffic jam prediction module and the traffic flow monitoring module, if the traffic jam critical value is reached in the east-west driving direction, the green light duration in the east-west driving direction reaching the traffic critical value is prolonged, meanwhile, the red light duration in the south-north driving direction is prolonged to relieve the traffic jam phenomenon, if the traffic jam critical value is not reached in the east-west driving direction, if the east-west driving direction reaches the traffic jam critical value, the number of waiting vehicles in a parking line is less through a geomagnetic induction coil monitoring device, when monitoring vehicle flow is less, and combine last crossing video image detection device to detect vehicle flow size, it is long when the adjustment shortens the green lamp of east and west driving direction, it is long when the green lamp of north and south driving direction is prolonged, if, it is more that the east and west driving direction passes through earth induction coil monitoring vehicle waiting in the stop line, it is more to wait for the vehicle in the stop line simultaneously through video image detection device verification, combine last crossing video image detection device to detect flow size, it is long when the green lamp of east and west driving direction is prolonged, it is long when the red lamp of north and south driving direction is prolonged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.