In order to solve the travel problem quickly and effectively, the intelligent transportation system gradually implemented has played an important role in practical application.
Vehicle monitoring system is indispensable in the development of intelligent transportation system. It is widely used in many fields such as public transport, passenger transport, urban management law enforcement, school bus safety, medical first aid, emergency repair of electric power and so on. Shenzhen, Guangzhou and other places have begun to implement comprehensive bus monitoring, Beijing, Shanghai and other parts of the country have followed up.
With the development of China's economy, traffic pressure is increasing day by day. Bus priority is proposed in the planning of intelligent transportation system in various cities to alleviate the traffic pressure. In order to strengthen the operation and management of public transport and passenger vehicles, prevent traffic accidents and ensure traffic safety, at the same time, provide scientific reference for traffic accident analysis and protect the legitimate rights and interests of drivers.
Faced with the increasing development of urban buses, how to effectively manage them? Frequent public security cases such as theft and assault, ticket evasion, and the supervision of crew and drivers on public transport also bring great management bottlenecks to the management of public transport companies. Based on the above requirements, in recent years, the public transport security system has gradually been put into practical application in the application of public transport management, and this demand is gradually expanding.
With the vigorous development of public transport passenger transport, more and more attention has been paid to the safety and management of operators in the operation process. It is necessary to install a mobile monitoring system on buses. In the past few years, the buses with on-board terminals were basically based on the government's macro-control or special period (city transportation and Asian Games). The cities with on-board products installed by buses mainly concentrated in the economically developed areas of China, such as the Pearl River Delta and the Yangtze River Delta. Recently, because of public safety and industry management requirements, the second and third-line city buses in China installed on-board monitoring products. The increasing demand, coupled with the maturity of the technology of the whole set of on-board monitoring equipment and the higher performance-price ratio, makes it possible to install on-board monitoring products on buses in most cities.
Video should be clear
In recent years, the construction of public transport security system in China started relatively late, and it has improved a little, accompanied by the progress of the security industry and continues to develop. Vehicle monitoring is a small mobile monitoring site with its own integration. Different application needs have different installation schemes. Generally, there are the following points.
Public security monitoring: Buses as public travel tools, all kinds of people will stay here, therefore, some illegal elements will focus on the bus, making the bus become the frequent source of public security cases such as theft, so the public security department will install several in-car situation monitoring cameras through the bus company, generally one for the front door and one for the back door of the bus, for monitoring passengers and boarders. The front and rear of the carriage are also equipped with a camera to monitor the situation in the carriage.
Driver and conductor monitoring: bus companies pay more attention to their own personnel problems, through monitoring equipment to understand the working conditions in the car, such as the camera in the front of the carriage is aimed at the driver, can check whether the driver is operating norms, whether there is indecent behavior, and so on, to facilitate the supervision of driver self-discipline driving; the conductor office also has to install cameras to check ticket sales and supervise the standardization of ticket sales;
Front-end monitoring: Buses may encounter some unexpected traffic incidents, such as diversion, rear-end collision, etc. When a traffic accident occurs, the responsibility can be delimited by video recording. At the same time, the video captured by the front-end camera is transmitted to the backstage, and it can also be used as the information source of the background to understand the driving condition (vehicle location, vehicle speed, road congestion), so as to facilitate the backstage. The command and dispatch of the station;
Back-up monitoring: It can be used in the case of backing up and being rear-ended. The camera is placed behind the car. When the driver backs up, the on-board display terminal will automatically switch to the back-up monitoring channel.
For monitoring and installation construction, we also need to pay attention to: buses are generally dirty and messy, so the camera should have a certain waterproof, dust-proof performance, if installed outside the car, but also have a good explosion-proof performance. In actual operation, the camera must be firmly installed, to withstand the frequent shaking test of the car, is the camera and the body always keep the same swing amplitude, so that the image obtained will not appear shaking.
Because buses play a mobile "island" role, they can not be directly connected to the wired network. After the camera collects the image information, it will be stored in the host computer. Because of the special circumstances of buses, vibration will occur at any time, which puts forward high requirements for on-board storage technology. In addition, there is vehicle side monitoring, which is used to monitor the situation on both sides of the bus during the passenger and passenger arrival and departure.
Storage should be stable
Our country's public traffic security monitoring mainly focuses on public security monitoring and driver, conductor monitoring, and other applications are added according to demand. "Common bus on-board monitoring is implemented by analog video camera plus DVR or analog video camera plus DVS. Vehicle-mounted DVR/DVS generally chooses 3-way video access, some cities choose 5-way video access, 5-way video access system than 3-way video access system has more video capture of flow statistics function.
Along with our country's attention to public traffic security monitoring, vehicle DVR can not meet the needs of real-time video surveillance, and the 3G vehicle video terminal developed by Dongyun Technology plays an important role in real-time surveillance, and has become one of the indispensable equipment. "Location + Visualization" (full-time video plus real-time browsing) service realizes remote real-time access to video images and local hard disk storage.