Car security video surveillance system can effectively enhance public safety
After the founding of China's automobile industry started, after 30 years of development in the 21st century has entered a rapid development period. Now has a 240 million-scale holdings, including highway commercial vehicles has reached 13,398,900. With the development of which high-speed rail passenger market, city rail, decreased slightly in recent years, but the freight vehicles maintained growth.
Dangerous security applications currently run from the car, working mainly in road vehicles (such as buses, taxis, school buses, buses, etc.), government departments, law enforcement vehicles (such as police enforcement, patrol cars, etc.), petrochemical industry Goods vehicles (such as tankers, dangerous goods vehicles). Which currently has a significant growth vehicle monitoring in buses, school buses and passenger applications, especially in buses, passenger terms, massive government implemented the "bus priority" Policy, monitoring the implementation of transit transport vehicles as opportunities. Meanwhile regulations since August 1, 2011, "two off a dangerous" new car factory, the factory should be installed in front of the vehicle in line with "road transport vehicle satellite positioning system vehicle terminal technical requirements" (JT/T794-2011) satellite positioning devices, but also for automotive security applications has played a catalytic role.
With the installation of vehicle security equipment continued to increase the number of the vehicle, the demand for vehicle management, operations management needs of enterprise is constantly increasing, which features in-vehicle management platform to demand more.
First, the bus industry characteristics and monitoring requirements
From the current development situation, the bus industry system presents some characteristics: such as the relative concentration of dispatching management center, but buses distributed in every corner of the city; transit system staff mobility, high traffic; data Information collected many types: not only to monitor the condition of passengers, but also to collect the vehicle running, real-time collection of various alarm signals; demanding real-time scheduling, real-time scheduling instructions issued under the like. For more transit system Characteristics, demand for automotive bus systems monitoring system is mainly reflected in the following three aspects:
1. Enhance public safety.
Bus system has a large number of people and mobility features, while the bus robbery, theft, sexual harassment and other incidents frequently, forensic detection difficult. Video surveillance systems used in buses, to preserve evidence of a crime, help solve the case and safety management provides a powerful tool. City bus video surveillance security monitoring as an important part of the security system and public security supplement, to improve urban security environment plays a decisive role.
2. Ease urban traffic caused by the increasingly busy traffic pressure.
With the increasing number of urban transport, urban traffic pressure has increased considerably, vehicle monitoring system in the public transportation system applications, not only as a function of monitoring, but also play a role in scheduling. With ITS (intelligent post Made through the system) concept vehicle monitoring system monitoring traffic conditions can be present in the entire city information center monitoring and management platform to keep abreast of road conditions, to facilitate the timely scheduling and divert traffic. Can Accurate scheduling of vehicles and improve the efficiency of public transport.
3 transit business operations management needs.
For passengers
To supervise the work and management is one of the purposes of transit vehicle surveillance applications. Among the bus operators, due to the uneven quality of personnel and passengers, private closed ticket, the situation for fake tickets invalidated and uncivilized hair frequently irregular lane
Health. Misappropriated and not standard fare is caused by traffic accidents, to the bus company caused great losses. Applied to transit vehicle monitoring system that can put an end to this phenomenon well, increase business efficiency, urban transport system to reach
System with bus companies win-win situation.
Second, the video surveillance system deployment
According to the actual transit vehicle monitoring requirements, construction standards and the need for security, anti-technology, combined with the actual situation, UOB in transit vehicle monitoring system project design, based on "Scalable small digital video integrated monitoring system" technology in design, the system covers the bus company in vehicle monitoring in common functional requirements, such as: audio and video surveillance, alarm input, alarm signal output, Control of all aspects of smart devices and intelligent interface software and hardware aside, you can easily expand the system functionality, without the need for excessive increases system investment, with high reliability and security while conforming to ISO / OSI Open Systems Interconnection standards.
The whole system is divided into three pieces, the first piece of equipment on the vehicle is collectively vehicle terminal system, including hard disk recorders, cameras, and many additional modules; second block is in the middle of the network, a wireless network and wired network; third block Is the monitoring center, including TV wall, storage devices and platform management software.
1 vehicle terminal system
Terminal system consists of cameras, vehicle DVR, alarm module, wireless module and GPS module Components. The video camera is responsible for collecting the data, the audio pickup is responsible for collecting, encoding processing by car DVR, the geographical information and the encoded data received by the GPS module via the wireless module to the remote Dispatching center. General requirements of the end product has to adapt to the car power supply, seismic requirements.
2 network transmission
Because The vehicle is moving in real time, so as vehicle monitoring systems typically used for uploading vehicle data by wireless. Currently the wireless network into 3G networks, 4G networks and Wifi network three. 3G network by op Business building, covering a wide range, good mobile transmission effect, but low-bandwidth, high costs. 4G networks but also by the operator construction, the current signal coverage is limited, but higher bandwidth and better mobile transmission effect, costs are very High. Wifi network by the consumer self, with high bandwidth, low-cost advantages, but limited coverage, high-speed mobile transmission is poor. To do Wifi network monitoring system with 3G, 4G Automatic switching network, make full use of Wifi, 3G, 4G network advantage, reduce operating costs while improving the transmission efficiency.
3. Monitoring center
Monitoring center by the display systems, storage systems and platform software.
Display system: mainly to complete real-time image browsing, pop-alarm images, the electronic map display.
Storage systems: mainly to complete image storage, capture pictures stored alarm functions;
Platform software is the core of the whole system, the platform will be presented to complete the system functions and user interface.
Third, the application of the problems that need attention
Vehicle monitoring application system is mainly used in the vehicle, vehicle DVR application environment and is very different from an ordinary DVR, Car DVR applications therefore need to fully consider the following questions:
1, shock resistance
Due to the different condition, road conditions, shockproof technology has become a basic requirement for monitoring host. Including the whole of the many facets of shock absorption, cushioning the hard drive rack, hard disk shock, etc., to achieve the overall damping of the monitoring host Reasonable. In these shock sessions, hard disk shock is a top priority. This is due to the monitoring host the most vulnerable components is the hard drive, if the hard disk once damaged, can not be stored inside the case, so hard Damping plate is very important question.
2, Power Safety
Equipment used in the automotive needs of professional car wide voltage power supply, voltage adapt to a variety of vehicles to meet the range: 8V36V. With overvoltage protection, undervoltage protection, short circuit protection and over-current protection; while monitoring the host using low-power design, effectively reduce the burden of the car battery, so that the circuit board system more secure, not to adversely affect the normal use of the vehicle .
3, a powerful network functions
Video board equipment needs to be adopted, vehicle information, GPS information is uploaded to the monitoring center, you need the help of 3G, 4G networks, currently 3G, 4G network tariffs are relatively expensive, so for vehicle equipment requires a strong network capacity, reduce 3G, 4G network usage to save cost. So for Car DVR, the network needs to have the following features:
Network Adaptive: The wireless network bandwidth is limited and unstable connection status, network coding and transmission automatically adjust strategies to adapt to different network conditions;
Remote Management: Multiple alarm reporting and device network settings, upgrade and maintenance management functions;
HTTP: HTTP support wireless download feature, the status quo is more suitable for wireless network applications;
Network switch: automatic switching 3G/WiFi networks, effective use of a variety of network edge.
Fourth, application and development of the future direction
As the vehicle moves, the user of the vehicle remote video surveillance, vehicle GPS Beidou satellite positioning, as well as the needs of the host and scheduling data exchange platform is particularly urgent. With the growing popularity of 4G, 3G networks, network Network bandwidth is doubled to meet the high frame rate, high quality video image data transmission requirements. Old bicycle to the local video-based in-car video surveillance solution gradually to the systematic, network, platform directions issued Exhibition.
Meanwhile national advocate for green travel, energy conservation requirements and the bus company for its own operating costs, efficiency requirements, will the demand for vehicle data, the driver operating habits And other data collection and analysis by collecting running state of the vehicle such as fuel consumption, mileage and other information, the information acquisition operation of the driver and the driver's operation of the quantization, the mathematical model is analyzed to give quantitative Standards, combined with vehicle information, you can give the optimal driving action, to the bus companies to improve operational efficiency to help.