introduction This article refers to the address: http:// Based on the comprehensive application of global positioning technology, wireless communication technology and geographic information technology, the intelligent public transportation system realizes the intelligentization of bus operation and dispatching, the informationization and visualization of bus operation, and realizes the perfect information service for public passengers. The computer operation management system and the intelligent terminal information network connecting the parking lots will strengthen the command and dispatch of the operating vehicles and promote the construction of smart transportation and low-carbon cities. The overall design of the intelligent public transport system Intelligent public transport system structure The solution consists of four main parts: 1. Central management platform: The central management platform consists of management server, database service, AAA server, client access server, front-end access server, storage server and distribution server to realize vehicle scheduling, video monitoring, information release, and operational data statistics. And business management functions such as analysis and data backup. 2. Front-end acquisition equipment: including cameras and in-vehicle equipment (DVR, GPS, WCDMA wireless transmission modules) installed in public transportation vehicles, station stations, electronic station signs, etc., complete positioning information, image data acquisition and transmission, local image data storage . 3. Transmission network: It consists of wireless VPDN and dedicated line, which completes the intelligent bus positioning information, image data transmission and monitoring center and central platform equipment interconnection. 4. Monitoring Center: The monitoring center is composed of video wall, software/hardware decoder, main console and monitoring management software. It is the interactive interface between users and the central management platform. The bus company management personnel can pass the big screen, C/S or The B/S client approach enables vehicle management and monitoring. Main functions of intelligent bus integrated system Real-time vehicle command and dispatch and video surveillance 1. The real-time vehicle command and dispatch function provides a convenient means for the bus company to communicate with the bus in real time, to understand the situation, issue instructions, intelligent bus industry solutions and even remote control. The scheduling functions mainly include vehicle positioning monitoring, vehicle real-time scheduling, help and cross-border alarms, vehicle information query, statistical information viewing and equipment management. 2. The mobile video surveillance function monitoring center can monitor the running position, motion track and the situation of the bus in real time through the 3G wireless network. When an emergency occurs, the monitoring center can monitor the status of the front-end vehicle in real time, so as to be in a timely manner. (1) Alarm and forwarding function The vehicle front-end equipment can send an alarm signal to the video monitoring and command platform, and then forward it to the server to start the related linkage control service. The staff in charge of the monitoring room can also issue an alarm when the police are found, and the alarm information is transmitted to the public security network for processing. (2) Car video recording function The car front end has a video recording function, and the hard disk video recorder can record the video and audio on the scene at the time of the event, as the basis for public security on-site law enforcement and after-the-fact forensics. (3) Centralized storage function The video stored in the vehicle front end is periodically dumped to the platform centralized storage system. Electronic stop sign for passengers Through the electronic stop sign, it is possible to greatly facilitate the passengers to ride. What passengers want to know at the station is when the next bus arrives, whether the car is crowded, and how long it takes to get to the destination. These can be exchanged through the electronic station card and the monitoring center through optical fiber, etc., and presented to the passenger through the display device of the stop sign. 1. Video monitoring of the station: The real-time video of the station can be captured to the monitoring center by installing the camera on the electronic station. 2. Bus station advance notice: Using the distance measurement function of the electronic map and the real-time positioning function of the vehicle, the current vehicle-to-site distance measurement is performed, and the current speed and the average speed of the road segment are measured at the same time. The distance display of the vehicle from the station and the notice of the arrival time. 3. Forecast of the uploading passengers of the car: According to the passengers that will be sent to the background by the inbound vehicles, the passengers in the waiting car can be forecasted to be crowded and predict the seating situation. 4. Pavement situation: It is possible to rely on the road congestion obtained from the traffic control department to introduce the passengers of the route to the waiting passengers so that the passengers can choose to ride. 5, remote management of the ad playback function: can receive the digital TV signal of the wireless digital transmission network, or use 3G bandwidth for remote video file transmission, and then use the remote management function to control the playback of files to achieve remote advertising or news playback. 6. Basic information maintenance of the electronic station card: Add, modify, query and delete the relevant information of the electronic station card. The information of the electronic stop sign includes: device model, name, location, SIM card number, and information such as the bus line. Intelligent Public Transport Integrated System Center Platform Hardware platform Platform management server: platform management function, control service function, scheduling function, AAA function, business management function. Database server: responsible for the storage of management data of the entire network video surveillance system, mainly used to store important information such as user information, user rights, and device permissions. Front-end application server: interactive front-end subsystem information and forwarding, and system security. Client application server: Coordinate with the control service carefully, forward client terminal system requests, operation commands, and so on. Storage server: processes the recording start and playback commands from the control service system or the client application server, completes the reception, storage, and conversion of the video to the distribution subsystem, and distributes it to the client terminal system. Distribution Server: It is a video transfer distribution unit distributed throughout the Internet, which mainly completes the function of forwarding and distributing video. It can also be used in cascade. The distribution server can complete multiple inputs and multiple outputs of the video. At the same time, the distribution server can complete the collection function of the charging information for each video route. In some specific applications, some subsystems can also be installed on one server, but in order to provide better hardware support and business performance, it is recommended to install. software platform User interface The platform provides a unified user interface, including GIS vehicle navigation, tracking interface and system management interface. The design of all interfaces is consistent with the main interface, whether it is the use of controls, wording of prompt information, color, window layout style, follow a unified standard, and enhance the user-friendly system experience. System application layer The system application layer includes a basic map function module, a vehicle management function module, and a system management function module. The map function module includes functions such as map browsing, map query, map positioning, etc. The vehicle management function module includes functions such as vehicle positioning, vehicle tracking, vehicle scheduling, vehicle alarm and vehicle information management; the system management function module includes user management, log management, and statistics. Analysis and other functions. System middle layer The middle layer of the system provides the application platform framework and the middleware necessary for the GPS vehicle dispatching system, including the GIS components, and customizes the customized GIS platform based on the basic components. The background vehicle monitoring service is responsible for monitoring the online status of the vehicle equipment, and receiving, parsing, and transmitting corresponding instructions through the protocol of the GPS vehicle terminal product to support the GPS vehicle positioning and scheduling functions in the foreground. The spatial data engine provides a powerful tool for the system to connect to spatial data resources in the database. The interface adaptation component is responsible for data sharing and interoperability with external systems. Data layer The system implements unified management of data and realizes data sharing. According to current business requirements, the data storage mode adopts a distributed storage mode. The base basemap data is updated at a slower speed and stored on the client side, which can greatly speed up the speed of the bus company administrators to browse the map and enhance the user's friendly experience. Business layer data, small amount of data, fast update, centralized storage in the core database, easy to share and update data. Another common mode is to use a third-party map data service. Locally, there is no need to store map data, and it also saves the purchase cost of map data. Other business data includes GPS vehicle trajectory data, system management data, etc., which need to be updated in real time, so they are all stored in the core database. Such a data deployment mode not only ensures data sharing and centralized management, but also fully guarantees the running performance of the system. Data exchange system The main function of the data exchange system is to realize the transfer and exchange of data between the sub-system database and the shared database under the premise of mutual benefit. The whole system consists of software modules such as data interface, data conversion, data transmission, data routing, security management, scheduling monitoring, log management, and system management. Infrastructure service The infrastructure service defines a layer of virtualization that enables the business integration architecture built on top of any hardware platform that includes the underlying security, directory services, storage management, and more. At the same time, more importantly, adapting and managing all kinds of mobile devices can shield the differences in product personality, making data collection, statistics and device management more feasible and easy. 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