WO2017124858A1

WO2017124858A1 - Method and system for on-line traffic simulation

Info

Publication number: WO2017124858A1
Application number: PCT/CN2016/109713
Authority: WO
Inventors: 吴建平; 周杨; 贾宇涵
Original assignee: 清华大学
Priority date: 2016-01-19
Filing date: 2016-12-13
Publication date: 2017-07-27
Also published as: CN105718647A

Abstract

Disclosed are a method and system for on-line traffic simulation based on the simulation software FLOWSIM. The method comprises receiving a traffic simulation request of a user (S1); selecting a simulation mode according to information of the user and the traffic simulation request (S2); performing traffic simulation according to the simulation mode (S3); and feeding data of the traffic simulation back to the user (S4). The system can be used by many users simultaneously at the same moment, and the users are required to participate in the operation and maintenance of the system, facilitating use by the users. In the prior art, when a user needs to perform traffic simulation, the user needs to purchase a traffic simulation software at a high price, increasing the cost of performing traffic simulation to the user, but the system only requires the user to pay according to actual use, lowering the cost. The system has a plurality of internet server terminals distributed at different geographical locations, enabling an optimal server terminal to be selected for serving the user, and achieving high stability for the whole system. Therefore, the method and system can lower the cost of traffic simulation for users and facilitate use, and has high system stability.

Description

Online traffic simulation method and system

Technical field

The invention relates to the field of traffic simulation, and in particular to an online traffic simulation method and system.

Background technique

With the sustained and rapid development of China's social economy and the acceleration of urbanization, most of the large and medium-sized cities in the country have experienced serious traffic jams, which have had a major impact on the quality of life and environment of urban residents. When improving the existing traffic network, it is necessary to find out the problems and sticking points of the existing traffic network. Traffic simulation system is one of the effective means of traffic analysis. Its purpose is to use computer technology to reproduce complex traffic phenomena, explain and analyze these phenomena, find out the problems and crux, and finally carry out the traffic system under study. optimization. At present, the domestic and international mature commercial traffic simulation software mainly includes: AIMSUN in Spain, VlSSIM in Germany, and FLOWSIM in China. These systems have their own advantages and advantages.

At this stage, if the user wants to use the traffic simulation software, they must purchase the software, but usually the price of the type of software is relatively expensive, which affects the promotion of the software; at the same time, the traffic simulation software of the stand-alone version can simulate the traffic. The number of intersections is limited. If there are a large number of traffic intersections to be simulated, it is necessary to purchase multiple servers to form a cluster to install traffic simulation software, which further increases the cost of using the software, and the user maintains the cluster. There are disadvantages of difficult operation and maintenance; in addition, when only one user uses a set of traffic simulation software, the usage rate of the software will be low, which inevitably increases the user's use cost. Because each traffic simulation system has its own advantages, each has its own strengths; and the user's focus on each simulation is different, which leads to the selection of different and optimal traffic simulation software for each simulation, which further increases the user's use. The cost of traffic simulation software. Therefore, how to reduce the use cost of the traffic simulation system has become an urgent problem to be solved.

Summary of the invention

To this end, the present invention provides an online traffic simulation method and system, which allows multiple users to simultaneously perform online traffic simulation. Compared with traditional simulation software, it can not only reduce the user's payment costs, but also eliminate the related The cost of hardware and operation and maintenance is more practical, simple and flexible.

The present invention provides an online traffic simulation method, comprising the steps of: receiving a traffic simulation request of a user; selecting an simulation mode according to the user information and the traffic simulation request; performing traffic simulation according to the simulation mode; The data of the traffic simulation is fed back to the user.

Preferably, the step of selecting an emulation mode according to the information of the user and the traffic simulation request comprises: reading required data from a data table structure separately established for the user according to the information of the user; The user's information is read from the simulation mode table structure separately established for the user in advance; the corresponding simulation mode information is determined according to the required data, the required simulation mode information, and the traffic simulation request. Simulation mode.

Preferably, the simulation mode comprises: selecting an optimal server terminal by using a load balancing algorithm.

Preferably, the step of performing traffic simulation according to the simulation mode comprises: selecting a traffic simulation model that is optimal for the traffic simulation request, acquiring data required by the traffic simulation, and calling the traffic simulation model at the location The traffic simulation is completed on the server terminal of the simulation mode selection.

Preferably, the data of the traffic simulation is data including a modeling, operation, result display, etc. showing the entire traffic simulation process.

Preferably, the optimal server terminal is: a server terminal with the fastest network speed and the largest remaining computing resources between the users.

The invention provides an online traffic simulation system, comprising the following modules: a user interface module, configured to receive a traffic simulation request of a user; and a processing mode selection module, configured to select an simulation mode according to the information of the user and the traffic simulation request a traffic simulation execution module, configured to perform traffic simulation according to the simulation mode; and a data feedback module, configured to feed back data of the traffic simulation to the user.

Preferably, the processing mode selection module includes: a data table structure reading module, configured to read required data from a data table structure separately established for the user according to the information of the user; the simulation information reading module For separately generating a copy for the user in advance according to the information of the user Reading the required simulation mode information in the real mode table structure; the simulation mode determining module is configured to determine a corresponding simulation mode according to the required data, the required simulation mode information, and the traffic simulation request.

Preferably, the step of the traffic simulation execution module comprises: selecting a traffic simulation model that is optimal for the traffic simulation request, acquiring data required by the traffic simulation, and calling the traffic simulation model to be selected by the simulation mode The traffic simulation is completed on the server terminal.

The invention provides a web-based traffic simulation system, comprising the following modules: a user interface module, configured to receive a traffic simulation request of a user; and a processing mode selection module, configured to select according to the user information and the traffic simulation request a simulation mode; a traffic simulation execution module, configured to perform traffic simulation according to the simulation mode; and a data feedback module, configured to feed back data of the traffic simulation to the user.

Preferably, the processing mode selection module includes: a data table structure reading module, configured to read required data from a data table structure separately established for the user according to the information of the user; the simulation information reading module And for reading, according to the information of the user, the required simulation mode information from a simulation mode table structure separately established for the user in advance; the simulation mode determining module, configured to: according to the required data, the required simulation The mode information and the traffic simulation request determine their corresponding simulation modes.

Preferably, the data of the traffic simulation is web page data including modeling, operation, result display, etc. showing the entire traffic simulation process.

Preferably, the server terminal with the fastest network and the most computing resources remaining between the users and the user.

Compared with the prior art, the present invention has the following advantages:

(1) The present invention provides an online traffic simulation method and system, the method comprising: receiving a traffic simulation request of a user; selecting an simulation mode according to the information of the user and the traffic simulation request; performing traffic simulation according to the simulation mode; The data of the traffic simulation is fed back to the user. In the prior art, if the user wants to use the traffic simulation software, it usually needs to purchase the traffic simulation software at a full cost at a high cost; meanwhile, due to the limitation of the machine performance, the traffic simulation software of the stand-alone version can simulate the traffic of the traffic scene. The number and complexity of intersections are limited, so if the number of traffic intersections of the traffic scene to be simulated is large or the complexity is high, it is necessary to purchase multiple machines to form a cluster to install the traffic simulation software, which further increases The cost of the user using traffic simulation software. The online traffic simulation method and system according to the present invention uniformly deploys the traffic simulation system on the online simulation system, thereby realizing the whole process of online simulation, and the user does not need to purchase the traffic simulation software at full price, and does not need to purchase the machine. The installation of the traffic simulation software only needs to pay according to the usage; and the user does not need to participate in the later system maintenance and upgrade, which further saves the cost of the user for traffic simulation, and is also convenient.

(2) An online traffic simulation method and system according to the present invention, comprising a plurality of server terminals, which are respectively located at different positions of the network, and they are capable of performing traffic simulation separately, and an optimal one can be selected therefrom. The server terminal serves the user, so that the user can be better served. When one of the server terminals fails, the other server terminals can continue to provide services, thereby improving the stability of the entire system.

(3) The online traffic simulation method and system according to the present invention, selecting an optimal traffic simulation model for the simulation mode, acquiring data required for the traffic simulation request, and calling the traffic simulation model in the The traffic simulation is completed on the server terminal selected by the simulation mode. In the prior art, different traffic simulation softwares have their own advantages and advantages, and the focus of each simulation of the user is different, so that each simulation preferably selects different, optimal traffic simulation software, which The traffic simulation cost of the user is increased, and the online traffic simulation method and system according to the present invention can directly select an optimal traffic simulation model for traffic simulation according to the user's traffic simulation request, which is convenient for the user to use and also reduces The cost of traffic simulation for users is low.

(4) The online traffic simulation method and system according to the present invention, wherein the data required for the traffic simulation request includes modeling, operation, and result display, and can display data of the entire traffic simulation process. The entire traffic simulation process can be presented to the user in real time, so that the user feels that there is no difference between the online traffic simulation and the local use of the traffic simulation software, thereby making it easier for the user to use the online simulation system. Reduced user training costs.

(5) The online traffic simulation method and system according to the present invention uses a load balancing algorithm to select an optimal server terminal, and the online simulation method and system according to the present invention are used to facilitate users in different locations of the network to use the traffic simulation system. Contains multiple server terminals. The network speed between users and different server terminals is often different, and the same server terminal provides services for multiple users at the same time. Therefore, when a user needs to carry out traffic simulation, he can choose a server terminal with the fastest network and the most remaining resources between them, so that the user can complete his traffic simulation task more conveniently, quickly and smoothly, and increase User satisfaction.

DRAWINGS

In order to make the content of the present invention easier to understand, the present invention will be further described in detail below with reference to the accompanying drawings

1 is a flowchart of an online traffic simulation method according to Embodiment 1 of the present invention;

2 is a schematic diagram of an online traffic simulation system according to Embodiment 2 of the present invention;

3 is a schematic diagram of a Web-based traffic simulation system according to Embodiment 3 of the present invention;

4 is a schematic diagram of a Web-based traffic simulation system according to Embodiment 3 of the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail below.

Example 1

The invention provides an online traffic simulation method. Based on traffic simulation software, traffic simulation refers to: using computer simulation technology to realistically and dynamically simulate road traffic flow and reproduce the time and space of traffic flow. Changes, traffic accidents, traffic control and other traffic phenomena, in-depth analysis of the various relationships and characteristics of people, vehicles, roads, the use of simulation to analyze the crux of the problem, and can optimize the existing transportation system or transformation program. Using traffic simulation software to carry out related research, with low cost, low risk, repeatability and many other advantages, and is not subject to field test conditions, simulation technology has become an important means to analyze traffic flow characteristics and engineering optimization, and also internationally. One of the hot spots in the transportation field.

At present, the more mature commercial traffic simulation softwares in the world mainly include: AIMSUN in Spain, VlSSIM in Germany, and FLOWSIM in China. In this embodiment, FLOWSIM software can be selected. The simulation software is set in the traffic simulation server system, and various types of traffic simulations can be performed according to the needs of the user.

The prior traffic simulation prevention in this embodiment, as shown in FIG. 1, includes the following steps:

Step S1: receiving a traffic simulation request of the user.

The client used by the user may be a PC or various mobile devices; a client software may be installed on the client, and the user connects the online simulation system providing the online simulation service and sends a simulation request through the client software; The user can also connect to the online simulation system via a browser and send a simulation request on the client. When the user performs traffic simulation, the data transmitted between the user and the online simulation system often has high commercial value. Therefore, the security of the transmitted data can be ensured by means of encryption (for example, SSL encryption, etc.) The received user's traffic simulation request may be encrypted. At the same time, the online simulation system can provide online traffic simulation services for multiple users at the same time. The user and the online emulation system can be located in the same local area network or in different locations on the network.

In this embodiment, the user accesses the Internet through a client computer or other terminal device, and accesses the web version of FLOWSIM; the FLOWSIM web service version is established in the FLOWSIM private network, and the private network is based on the existing software The local area network established by the FLOWSIM server has an external access interface; all kinds of service requests of the user on the Web version of FLOWSIM are completed by the FLOWSIM software in the server and stored in the database.

Step S2: Select an emulation mode according to the information of the user and the traffic simulation request.

Usually, the server system stores related information of the user, and the user needs to log in to the server system. In order to use the online service, you can get the information of the logged in user. In the server, there is traffic simulation software FLOWSIM. The traffic simulation software FLOWSIM's service mode is mainly based on product as its core, and FLOWSIM has broad development prospects. The core component of the simulation software FLOWSIM is a set of microscopic traffic simulation model established by the applicant based on fuzzy mathematics theory at the Transportation Research Institute of Southampton University in the United Kingdom. The model is established by using fuzzy mathematics theory and a large number of data acquisition foundations. A follow-up model, a lane change model, and a merge model that embody the driver's inherent driving behavior. Using FLOWSIM simulation can accurately simulate the road network operation state, traffic flow characteristics and signal timing, and use traffic simulation results to provide more accurate decision support for real-time path planning. The FLOWSIM model has been widely used in China and has been developed to version 3.0. Beginning in 2000, the characteristics of mixed traffic flow in China have been studied. At present, the calibration and verification of the model in China has been completed, and the micro-behavior model of bicycles and pedestrians under mixed traffic flow conditions has been established, making FLOWSIM the only basis. China's road condition data is established by the system of mixed traffic popular as a model of traffic simulation software.

At this time, according to the information of the user, the simulation mode may be selected to serve the user, for example, obtaining the user's tariff information, and when the remaining fee in the user's account is insufficient to pay for the traffic simulation, The user will be prompted to recharge and the user is prohibited from performing the traffic simulation; sometimes, in order to attract users to use the online traffic simulation service, some users can use it for free, but the scale, complexity and support of the traffic scene that can be simulated are supported. The features will be limited and so on.

Generally, the size and complexity of the traffic scenarios to be simulated by different traffic simulation requests will be different. Therefore, in order to perform this traffic simulation, the resources required for the online simulation system will generally be different. Therefore, when the remaining resources of the online simulation system are insufficient to complete the traffic simulation, the traffic simulation may be rejected, or the traffic simulation may be performed when the resources are sufficient. Generally, in order to improve the performance of the online simulation system, the online simulation system may include a cluster, and then may select a suitable number of machines from the cluster according to the size, complexity, and the like of the traffic scenario to be simulated by the traffic simulation request. Secondary traffic simulation; especially when the size and complexity of the traffic simulation request are relatively large, in order to better complete the traffic simulation, a certain number of machines can be selected in the cluster to perform the traffic simulation. . Therefore, it is necessary to select a suitable simulation mode in combination with the user information and the traffic simulation request, so that the traffic simulation task can be better completed.

To ensure the bandwidth speed, the operation that the user can request on the client is reduced compared to the stand-alone version of FLOWSIM. Less, its supported functions include: establishing road network geometry model, establishing road network data model, establishing traffic control plan and running traffic simulation and returning simulation operation results. At the same time, the Web version of FLOWSIM has certain restrictions on the size of the road network to ensure software operation and data transmission speed.

FLOWSIM serves multiple units across the country, and there will be multiple users sharing, so multi-user management is required. On the database side, the stand-alone database solution has the highest isolation level and the lowest level of sharing. However, this solution usually increases the cost of equipment maintenance and tenant data backup, and the hardware cost is higher than other solutions. Therefore, FLOWSIM's SaaS service mainly uses a shared database but isolated data architecture scheme. All users use a database together, but each has its own set of different data table structures and is stored in a separate mode. This solution not only saves a certain cost, but also ensures that each user is isolated from each other to ensure data security.

In this embodiment, the step of selecting an emulation mode according to the information of the user and the traffic simulation request includes:

Step S21: Read the required data from the data table structure separately established for the user in advance according to the information of the user.

The online simulation system needs to serve different users. In order to prevent these users from interfering with each other, it is necessary to establish a separate data table structure for each user to store the information of each user. For example: tariff information, user type information, network speed information between the user and the server terminal, user location information, past traffic simulation data information, etc., can be read from when needed.

Step S22: Read required simulation mode information from a simulation mode table structure separately established for the user in advance according to the information of the user;

Typically, users of an online simulation system typically use some fixed traffic simulation mode information, such as similar road network geometry models, similar road network data models, similar traffic control schemes, similar computing resource consumption, and user IP addresses and geographic locations are generally the same. Therefore, a separate simulation mode table structure can be preset on the online simulation system, and information about the simulation mode is stored in the simulation mode table structure, and can be read from when needed.

Step S23: Determine a corresponding simulation mode according to the required data, the required simulation mode information, and the traffic simulation request.

A separate database can be set up for each user, that is, the data table structures of different users are stored in different databases respectively; a database can also be shared, but each user has a separate set of different data table structures and stores. In a separate mode.

Step S3: Perform traffic simulation according to the simulation mode.

Since the traffic simulation software is uniformly deployed on the operator's server, traffic simulation can be performed after the simulation mode is selected. Selecting a traffic simulation model optimal for the traffic simulation request, acquiring data required by the traffic simulation, and calling the traffic simulation model to complete the traffic simulation on a server terminal selected by the simulation mode.

The traffic simulation data is data showing the entire traffic simulation process including modeling, operation, and result display. When the user conducts online traffic simulation, the entire traffic simulation process is presented to the user in real time, so that when using the online traffic simulation, the user feels that there is no difference between using the traffic simulation software locally, thereby making it easier for the user to use the The online simulation system also reduces the cost of training for users.

In the prior art, each traffic simulation software has its own advantages and advantages. Therefore, the server terminal providing the online traffic simulation service may include the traffic simulation model provided by each different traffic simulation software in the prior art, so that the optimal traffic simulation model for the traffic simulation request may be invoked for traffic. The simulation facilitates the user's use and reduces the cost of the user's traffic simulation. At the same time, a plurality of server terminals may be included, and a suitable server terminal is selected by the simulation mode, and then the traffic simulation module is invoked on the server terminal to complete the traffic simulation.

In the prior art, different traffic simulation softwares have their own advantages and advantages, and the focus of each simulation of the user is different, so that each simulation preferably selects different, optimal traffic simulation software, which The traffic simulation cost of the user is increased, and the online traffic simulation method in this embodiment can directly select the optimal traffic simulation model for traffic simulation according to the user's traffic simulation request, which is convenient for the user to use and reduces the user's operation. The cost of traffic simulation.

Because the traffic simulation software is uniformly deployed on the operator's server, the upgrade service is unified, and the multi-tenant database can be securely isolated to ensure information security. With online as a service, FLOWSIM can further strengthen the relationship between the operator and the user, through long-term service maintenance User relationship; can reduce user risk, avoid the satisfaction caused by one sale can not reach the expected situation; promote the integration of FLOWSIM simulation software with the Internet, accelerate the introduction speed of cloud computing in FLOWSIM, the current FLOWSIM functions are To improve, the number of users has gradually accumulated, it is necessary to carry out relevant cloud services to meet the needs of customers for convenience and online services; solve the problem of piracy, and compress the use of pirated FLOWSIM through online services.

Step S4: feeding back the data of the traffic simulation to the user.

When the online simulation system completes the traffic simulation, the user needs to be prompted with relevant information, for example, the result of the traffic simulation is fed back to the user. Sometimes, in order to make it easier for users to use the online traffic simulation service, the process of traffic simulation can also be presented to the user.

In the prior art, if the user wants to use the traffic simulation software, it usually needs to purchase the traffic simulation software at a full cost at a high cost; meanwhile, due to the limitation of the machine performance, the traffic simulation software of the stand-alone version can simulate the traffic of the traffic scene. The number and complexity of intersections are limited, so if the number of traffic intersections of the traffic scene to be simulated is large or the complexity is high, it is necessary to purchase multiple machines to form a cluster to install the traffic simulation software, which further increases The cost of the user using traffic simulation software. The online traffic simulation method provided by the invention uniformly deploys the traffic simulation system on the online simulation system, thereby realizing the whole process of online simulation, and the user does not need to purchase the traffic simulation software at full price, and does not need to purchase the machine to install the network. The traffic simulation software only needs to pay according to the usage; and the user does not need to participate in the later system maintenance and upgrade, which further saves the cost of the user for traffic simulation, and is also convenient. Moreover, the method can simultaneously accept simulation requests of different users, and can provide services for different users at different times, thereby improving the usage rate of the system, which further reduces the cost of the user to perform traffic simulation; and uses the online traffic provided by the present invention. The simulation method can rewrite various traffic simulation software into the corresponding online version, so that when the user needs to carry out traffic simulation, the online version of the most suitable traffic simulation software can be selected according to the requirements of the traffic simulation, so that It enriches the user's choice and reduces the cost of traffic simulation for users.

The online traffic simulation method in this embodiment can select a traffic simulation mode according to data and simulation mode information required for traffic simulation stored by the user in advance, thereby providing an optimal simulation service for the user, which can better accomplish the Traffic simulation.

In some other implementations, the emulation mode includes selecting an optimal server terminal using a load balancing algorithm.

The user may be located anywhere on the network, resulting in a slower network between users in some locations and the online emulation system; the distribution of users is often uneven, for example, the number of users in universities and universities in the institute is usually More. Therefore, in order to better serve the user, the online simulation system may include multiple server terminals, which are respectively located at different locations on the network, and these server terminals are capable of providing online traffic simulation services separately, for example, in southern China. Server terminals are deployed in North China, East China, and the Midwest; server terminals can also be added in areas with a large number of customers. Therefore, it is necessary to select an optimal server terminal from among a plurality of server terminals to provide services for users. Therefore, it is more convenient for users to use and improve the quality of service.

The online simulation method in this embodiment includes multiple server terminals, which are respectively located at different locations of the network, and they are all capable of performing traffic simulation separately. Therefore, it is necessary to select an optimal server terminal to serve the user; One server terminal fails, and other server terminals can continue to provide services, thus improving the stability of the entire system.

As a preferred implementation manner, the optimal server terminal is: a server terminal that has the fastest network speed and the largest remaining computing resources among users. When the network speed and remaining computing resources of the selected optimal server terminal are still insufficient to meet the traffic simulation requirement, as an optional solution, the operation that the user can request on the client may be appropriately reduced, for example, only supporting the establishment of the path. The network geometry model, the road network data model, the traffic control scheme and the traffic simulation are simulated and the simulation results are returned. At the same time, certain limits can be set for the scale of the road network that can be simulated.

In the online traffic simulation method in this embodiment, a plurality of server terminals distributed in the network are included, and the network speed between the user and the different server terminals is often different, because the same server terminal provides services for multiple users at the same time. When a user needs to carry out traffic simulation, he can choose a server terminal with the fastest network and the most remaining resources between the users, which can make the traffic simulation task more convenient, fast and smooth, and increase the number of users. User satisfaction.

In addition, the online traffic simulation method further includes a charging step, and the traditional simulation software charging method is a one-time software authorization charging method, and the customer obtains the software used by paying the full amount. Can and lifetime or the right to use this version. In the SaaS mode, the charging methods mainly include: time charging method based on access time, parity charging method based on consumer information consumption, time-based subscription method and mixed charging method based on centralized charging method.

FLOWSIM mainly adopts the time-based charging method based on access time, and its cost mainly needs to consider two parts: fixed cost and variable cost. Fixed costs mainly include: 1) development cost of traffic simulation software FLOWSIM, including human resources such as module structure, function, interface and implementation method of software system; 2) hardware cost, including host, server, router and other facilities, and in the process Manpower and time costs incurred. The variable cost mainly includes: 1) customized cost, mainly personalized functions developed according to different user requirements, including interface settings, function modules, etc.; 2) maintenance costs, FLOWSIM operators need to be in the software service process, according to The software is modified, improved, maintained, and added to the infrastructure, and the part also includes training costs for users.

At the same time, FLOWSIM needs to consider the dynamic pricing strategy, and determine different prices according to the user's actual economic situation, time space and other different situations. For example, for education system users such as schools, consider reducing the fees appropriately. The dynamic pricing mechanism helps FLOWSIM find prices in an uncertain environment, enabling buyers and sellers to achieve higher market efficiency.

Example 2

The invention provides an online traffic simulation system, which can be a prior traffic simulation based on a web or APP manner, as shown in FIG. 2, and includes the following modules:

a user interface module, configured to receive a traffic simulation request of the user;

Processing a mode selection module, configured to select an emulation mode according to the information of the user and the traffic simulation request;

a traffic simulation execution module, configured to perform traffic simulation according to the simulation mode;

A data feedback module is configured to feed back data of the traffic simulation to the user.

In the prior art, if the user wants to use the traffic simulation software, it usually needs to purchase the traffic simulation software at a full cost at a high cost; meanwhile, due to the limitation of the machine performance, the traffic simulation software of the stand-alone version can simulate the traffic of the traffic scene. The number and complexity of intersections is limited, so if you want to simulate the intersection When the number of traffic intersections in the scene is large or the complexity is high, it is necessary to purchase a plurality of machines to form a cluster to install the traffic simulation software, which further increases the cost of the user using the traffic simulation software. The online traffic simulation system provided by the invention uniformly deploys the traffic simulation system on the online simulation system, thereby realizing the whole process of online simulation, and the user does not need to purchase the traffic simulation software at full price, and does not need to purchase the machine to install the network. The traffic simulation software only needs to pay according to the usage; and the user does not need to participate in the later system maintenance and upgrade, which further saves the cost of the user for traffic simulation, and is also convenient. Moreover, the system can accept simulation requests of different users at the same time, and can provide services for different users at different times, thereby improving the utilization rate of the system, which further reduces the cost of traffic simulation for users; and uses the online traffic provided by the present invention. The simulation system can rewrite various traffic simulation software into corresponding online versions, so that when the user needs to carry out traffic simulation, the online version of the most suitable traffic simulation software can be selected according to the requirements of the traffic simulation. It enriches the user's choice and reduces the cost of traffic simulation for users.

Preferably, the processing mode selection module comprises:

a data table structure reading module, configured to read required data from a data table structure separately established for the user according to the user information;

And a simulation information reading module, configured to read, according to the information of the user, the required simulation mode information from a simulation mode table structure that is separately established for the user in advance;

And a simulation mode determining module, configured to determine a corresponding simulation mode according to the required data, the required simulation mode information, and the traffic simulation request.

The online traffic simulation system in this embodiment can select a traffic simulation mode according to the data and simulation mode information required for the traffic simulation stored by the user in advance, thereby providing an optimal simulation service for the user, which can better accomplish the Traffic simulation.

The online simulation system in this embodiment includes a plurality of server terminals, which are respectively located at different locations of the network, and they are all capable of performing traffic simulation separately. Therefore, an optimal server terminal needs to be selected to serve the user; One server terminal has failed, other services The server terminal can continue to provide services, thus improving the stability of the entire system.

As a preferred implementation, the step of the traffic simulation execution module includes: selecting a traffic simulation model that is optimal for the traffic simulation request, acquiring data required by the traffic simulation, and calling the traffic simulation model The traffic simulation is completed on the server terminal selected by the simulation mode.

In the prior art, different traffic simulation softwares have their own advantages and advantages, and the focus of each simulation of the user is different, so that each simulation preferably selects different, optimal traffic simulation software, which The traffic simulation cost of the user is increased, and the online traffic simulation system in this embodiment can directly select the optimal traffic simulation model for traffic simulation according to the user's traffic simulation request, which is convenient for the user to use and reduces the user's operation. The cost of traffic simulation.

When the user conducts online traffic simulation, the entire traffic simulation process is presented to the user in real time, so that when using the online traffic simulation system, the user feels that there is no difference between using the traffic simulation software locally, thereby making the user more easy to use. The online simulation system also reduces the cost of training for users.

As a preferred implementation manner, the optimal server terminal is: a server terminal that has the fastest network speed and the largest remaining computing resources among users.

In this embodiment, the traffic simulation software FLOWSIM is used, which has the following layers to implement the above process, as follows:

1) The main task of the Web FLOWSIM presentation layer is to submit the client's request to the FLOWSIM business layer and present the data returned by the control layer to the client browser layer. The FLOWSIM presentation layer does not need to consider the implementation of various functions of the software and the details of various services. This layer can serve as a gateway for various user login management, session management and other services.

2) The role played by the Web FLOWSIM control layer is an intermediate bridge between the presentation layer and the business logic layer. By receiving the response of the presentation layer, it searches for the corresponding business process, and then feeds back the result information obtained by the operation of the business logic layer to the presentation layer.

3) The Web FLOWSIM business logic layer is mainly used to implement the business logic processing of various functions of FLOWSIM, mainly processing the data of the simulation software program and the business rules for accessing, controlling and modifying the data.

4) The task of the Web FLOWSIM database is to store and manage various types of data of users. This layer is for multi-tenant usage. Each FLOWSIM tenant may have different requirements for software interface style and function customization. Therefore, this layer is responsible for multi-tenant data expansion and different function selection.

The online traffic simulation system in this embodiment includes a plurality of server terminals distributed in the network, and the network speed between the user and the different server terminals is often different, because the same server terminal provides services for multiple users at the same time, when one When users need to carry out traffic simulation, they can choose a server terminal with the fastest network and the most remaining resources between users, which can make the traffic simulation task more convenient, fast and smooth, and increase the user's Satisfaction.

As a specific application method, the solution can be applied to the following occasions:

scene 1

Government department procurement, such as the Municipal Public Security Bureau Transportation Administration procurement online service version FLOWSIM for the optimization of the local intersection transformation and program evaluation. Its business needs are: the interface is simple and easy to operate, the basic functions are complete, and only a small-scale road network simulation is needed. In response to this demand, a simplified version of the FLOWSIM online account password is provided, an independent database is established to ensure the security of government information, and training services are provided, with a high total charge.

Scene 2

Education department procurement, such as a school transportation professional laboratory procurement for teaching demonstration and project research. Its business needs are: switchable English interface, all functions are complete, and the required bandwidth is guaranteed. It is mainly used for small-scale road network simulation and simulation, and requires preferential price. In response to this demand, the full version of the FLOWSIM online account password is provided, a shared database of isolated data structures is provided, and some training services are provided, with a lower total charge.

Scene 3

Enterprise department procurement, such as the procurement of a city bus company to study and improve the existing bus line service water At the same time, I will study the issues of new lines and frequency of departure. The business needs are as follows: the interface is as simple as possible, and it can carry out bus simulation of a large-scale road network, and it is necessary to output simulation results of more parameters, and the process is complicated. In response to this demand, the FLOWSIM online version of the account password of the expansion board is provided, and an independent database is established to ensure the security of the enterprise data, and detailed training services are provided, and the total charge is high.

The traffic simulation system in this embodiment includes a plurality of server terminals, which are respectively located at different locations of the network, and they are all capable of performing traffic simulation separately. Therefore, it is necessary to select an optimal server terminal to serve the user; One server terminal fails, and other server terminals can continue to provide services, thus improving the stability of the entire system.

In the prior art, different traffic simulation softwares have their own advantages and advantages, and the focus of each simulation of the user is different, so that each simulation preferably selects different, optimal traffic simulation software, which The traffic simulation cost of the user is increased, and the Web-based traffic simulation system in this embodiment can directly select the optimal traffic simulation model for traffic simulation according to the user's traffic simulation request, which is convenient for the user to use and also reduces the user's use. The cost of the user performing traffic simulation.

When the user conducts web-based traffic simulation, the entire traffic simulation process is presented to the user in real time, so that when using the web-based traffic simulation system, the user feels that there is no difference between using the traffic simulation software locally, so that the user can be made It is easier to use the web-based traffic simulation system, while also reducing the user's training costs.

The Web-based traffic simulation system in this embodiment includes a plurality of server terminals distributed in the network, and the network speed between the user and the different server terminals is often different, because the same server terminal provides services for multiple users at the same time. When a user needs to perform traffic simulation, they can choose A server terminal with the fastest network and the most remaining resources between the users and the user serves it, which enables the user to complete its traffic simulation task more conveniently, quickly and smoothly, and increases user satisfaction.

Example 3

FIG. 3 shows a basic architecture diagram of a Web-based traffic simulation system, which includes: a client, an Internet, an emulation service software, and a database. The user accesses the Internet through the computer or other terminal device at the user end, and accesses the Web-based traffic simulation system; the simulation service software in the Web-based traffic simulation system is established in a dedicated local area network, and the dedicated local area network is software operation Based on the local area network established by the existing simulation service software, it has an external access interface; all kinds of service requests of users on the Web-based traffic simulation system are completed by the simulation service software and stored in the database.

Among them, the task of the database is to store and manage various types of data of users. This layer is for multi-user use. Each user may have different requirements for software interface style and function customization. Therefore, this layer is responsible for multi-user data expansion and different function selection. A separate database can be set up for each user, that is, different users' data are stored in different databases respectively; a database can also be shared, but each user has a separate set of different data table structures and is stored separately. Among the patterns.

Preferably, as shown in FIG. 4, the simulation server software includes:

In the client browser layer, the user mainly uses a web-based browser on the client side, and the user performs various operations of the web-based traffic simulation system through the Internet, and reads and saves data through the Internet.

Software presentation layer, the main task of the software presentation layer is to submit the client's request to the software control layer, and present the data returned by the software control layer to the client browser layer. The software presentation layer does not need to consider the implementation of various functions of the software and the details of various services. This layer can serve as a gateway for various user login management, session management and other services.

The software control layer, the role played by the software control layer is an intermediate bridge between the software presentation layer and the software business logic layer. It receives the corresponding business process by receiving the response of the software presentation layer, and then feedbacks the result information obtained by the software business logic layer operation. To the software presentation layer.

The software business logic layer, the software business logic layer is mainly used to implement the business logic processing of various functions of traffic simulation, mainly processing the data of the simulation software program and the business rules for accessing, controlling and modifying the data.

Preferably, the web-based traffic simulation system further includes a pricing module. The charging methods mainly include: time charging method based on access time, parity charging method based on consumer information consumption, time-based subscription method and mixed charging method based on centralized charging method. The web-based traffic simulation system mainly adopts a time-based charging method based on access time, and the cost mainly needs to consider two parts: fixed cost and variable cost. The fixed cost mainly includes: 1) the development cost of the Web-based traffic simulation software, including the labor cost of the module structure, function, interface and implementation method of the software system; 2) the hardware cost, including the host, the server, the router, etc., and the Manpower and time costs incurred in the process. The variable cost mainly includes: 1) customized cost, mainly personalized functions developed according to different user requirements, including interface settings, function modules, etc.; 2) maintenance cost, traffic simulation software operators need to be in the software service process According to the corresponding situation, the software is modified, improved, maintained, and the infrastructure is added. At the same time, this part also includes the training cost for the user.

At the same time, the traffic simulation software needs to consider the dynamic pricing strategy, and determine different prices according to the user's actual economic situation, time space and other different situations. For example, for education system users such as schools, consider reducing the fees appropriately. The dynamic pricing mechanism helps Web-based traffic simulation systems find prices in uncertain environments, enabling buyers and sellers to achieve higher market efficiency.

It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.

Claims

An online traffic simulation method, comprising the steps of:

Receiving a traffic simulation request of the user;

Reading required data from a data table structure separately established for the user in advance according to the information of the user;

Reading the required simulation mode information from the simulation mode table structure separately established for the user in advance according to the information of the user;

Determining a corresponding simulation mode according to the required data, the required simulation mode information, and the traffic simulation request;

Performing traffic simulation according to the simulation mode;

The data of the traffic simulation is fed back to the user.
The online traffic simulation method according to claim 1, further comprising:

Use the load balancing algorithm to select the optimal server terminal.
The online traffic simulation method according to claim 1 or 2, wherein the step of performing traffic simulation according to the simulation mode comprises:

Selecting an optimal traffic simulation model for the simulation mode, acquiring data required by the traffic simulation request, and calling the traffic simulation model to complete the traffic simulation on a server terminal selected by the simulation mode.
The method of claim 1 further comprising a pricing step based on time charging of access time, parity charging based on consumer information consumption, time period based subscription method, and centralized charging method One or several of the combined mix charges.
The online traffic simulation method according to any one of claims 1 to 4, characterized in that:

The data required for the traffic simulation request includes modeling, operation, and result display, which can display the whole Data from the traffic simulation process.
The online traffic simulation method according to claim 2, wherein the optimal server terminal is:

The server terminal with the fastest network and the most computing resources remaining among users.
An online traffic simulation system, comprising the following modules:

a user interface module, configured to receive a traffic simulation request of the user;

Processing a mode selection module, configured to select an emulation mode according to the information of the user and the traffic simulation request;

a traffic simulation execution module, configured to perform traffic simulation according to the simulation mode;

a data feedback module, configured to feed back data of the traffic simulation to the user, where the processing mode selection module includes:

a data table structure reading module, configured to read required data from a data table structure separately established for the user according to the user information;

And a simulation information reading module, configured to read, according to the information of the user, the required simulation mode information from a simulation mode table structure that is separately established for the user in advance;

And a simulation mode determining module, configured to determine a corresponding simulation mode according to the required data, the required simulation mode information, and the traffic simulation request.
A traffic simulation system, comprising:

Client browser layer, the user accesses the Internet through the client, and reads and saves data through the Internet;

Software presentation layer, the main task of the software presentation layer is to submit the client's request to the software control layer, and present the data returned by the software control layer to the client browser layer;

The software control layer searches for the corresponding business process by receiving the response of the software presentation layer, and then feeds back the result information obtained by the software business logic layer operation to the software presentation layer;

Software business logic layer, software business logic layer is mainly used to realize traffic simulation various functions of business Logic processing, processing data for simulation software programs and business rules for accessing, controlling, and modifying such data.