The on-board monitoring and control framework consists of a three-tier networked integrated supervision system consisting of vehicle terminals, transmission networks and monitoring centers. It provides vehicle anti-theft, anti-robbery, driving route monitoring, real-time wireless transmission of vehicle exterior and exterior video images, rapid response to accidents, call command, and other functions. To solve the problem of dynamic management of existing vehicles.
Vehicle monitoring uses vehicle-mounted video server, which connects 3 to 4 cameras. Video server through EDGE/cdma2000 1x/Wi-Fi network, monitoring center can carry out real-time monitoring and transmission of images in the vehicle, and uses dual-stream technology, local video recording using D1 resolution, network transmission using CIF/QVGA/QCIF resolution Rate, to achieve local encoding storage and remote storage.
1, vehicle terminal
The vehicle terminal is a front-end device of the vehicle monitoring and management system, and is generally installed in various vehicles. The vehicle terminal equipment is mainly composed of various external devices such as a car video server, an LCD touch screen, an external camera, a call controller, and a car alarm.
The on-board video server collects audio and video signals and compresses them into digital streams, which are transmitted to user monitoring centers through wireless networks such as cdma20001x to achieve the purpose of remote monitoring and emergency command. Vehicle video servers require dual-stream simultaneous encoding, including locally independent video streams and network streams.
The user needs to extract the video surveillance data and can use two methods: one is through the car terminal USB port, the second is through EV-DO (cdma20001x, Wi-Fi) remote retrieving.
2, monitoring center
The monitoring center is the core of the dispatching and commanding system. It is a remote visual commanding and monitoring management platform. It monitors all on-site vehicles and realizes two-way audio and video interactive command. The electronic map on the monitoring center can display the intuitive location of the vehicle and pass the wireless. The network monitors the vehicle settings. For example, by configuring the pan-tilt, you can control the front-end camera on the car.
At the same time, the monitoring center can implement real-time, centralized, and intuitive monitoring and dispatching of the controllable operating vehicles, and can be linked with the 110 and 119 police stations to timely dispatch the police to arrive at the scene in the event of a police emergency to ensure emergency treatment. effectiveness.
3, transmission network
Unlike fixed monitoring using wired networks, on-board monitoring can only rely on wireless networks. China Telecom's mobile network is a network mode suitable for audio and video data transmission in wide area wireless networks.
Car monitoring system functions and features 1, on-board monitoring functions (1) real-time video monitoring
The monitoring center can remotely monitor vehicle video in real time, and the onboard wireless video server (single or dual card) supports multi-channel video remote viewing.
(2) Video storage and playback
With a multi-level storage structure, the car has a car hard disk, storage CIF (D1), wireless upload CIF. Car video can be remotely searched and downloaded.
(3) Car alarm linkage
The on-board alarm linkage mainly includes an external alarm button, that is, the driver can report an alarm to the monitoring center in the event of an emergency during driving. The second is a two-way voice call.
(4) GPS positioning
Built-in GPS can track the trajectory of the vehicle to fully understand the operating conditions.
2, on-board monitoring features
The monitoring system supports monitoring through a variety of terminals, mainly including clients such as PCs, video walls, and mobile terminals, and has functions such as remote video browsing, remote control, multi-screen monitoring, multi-screen polling, manual recording, and video playback.
(1) Monitoring Client
The monitoring center is connected to the telecommunication IDC computer room through a dedicated line. The customer can perform video browsing and PTZ control of the camera at each monitoring point.
(2) Large-screen video wall
The network video decoder can be installed to decode and decode the digital signals collected from the front end into images and sounds and transmit them to the TV wall to provide users with centralized real-time display of multi-channel monitoring point images.
(3) Mobile phone monitoring
The 3G mobile phone terminal with built-in monitoring client software enables remote video browsing, remote cloud mirror control, video capture and other functions to meet customers' needs for remote video viewing and remote emergency command. It provides 3G customers with anytime, anywhere video surveillance services.
In addition, on-board monitoring has other characteristics. The first is distributed monitoring, centralized management, intelligent setup, and humanized operation. The second is the integrated design of the wireless video server. The system has high reliability. Third, dual-stream technology is used, local video uses D1 resolution, and network transmission uses CIF/QVGA resolution. The fourth method is H.264 compression encoding, which supports multi-channel video access at the same time. Each channel video is 8-10 frames, and the video is more clear. Fifth, wireless network transmission, China Telecom's 3G upstream bandwidth up to 1.8Mbit/s. Sixth, the system has strong expansion capabilities.
Vehicle monitoring key points 1, networked vehicle monitoring
Through telecom CDMA wireless network, it collects moving vehicle video information and transmits it to the monitoring center for remote video browsing and remote control. At the same time, the vehicle terminal connects the LCD touch screen and installs the GPS module to achieve satellite positioning and voice self-navigation functions. The system sends monitoring and positioning information to the dispatch monitoring center. The monitoring center realizes large-screen video images and electronic map display, and can dispatch, monitor and manage vehicles in a timely and accurate manner. The monitoring center can also send various information such as dispatch, road conditions, and news to the vehicle to provide better services.
2. System stability and shock absorption
Compared with fixed monitoring, the harsh environment for on-board applications requires the provision of a relatively stable terminal system. In terms of power supply for on-board equipment, because of the special use environment, the vehicle needs lower power consumption and stronger anti-interference ability. The power supply management fully considers vehicle startup, high-speed motion, voltage fluctuation during driving, electromagnetic interference, and dusty Complex environment and other issues ensure the reliability and stability of the system during operation.
If the on-board equipment adopts hard disk storage protection technology to solve the shock absorption problem, in addition to the machine to be shock-absorbing, the hard disk must pay particular attention to shock absorption. At present, some vehicle-mounted flash cards are stored to prevent the hard disk from being damaged by vibration.
3, onboard value-added services
The car terminal is connected to the liquid crystal display, while providing audio and video monitoring and video recording, it also provides new value-added services - car entertainment functions, which can receive radio, television and other signals, but also pre-recorded DVD, VCD and other entertainment programs, any arrangement Playback order, real-time automatic play, manual play, loop play, breakpoint playback, and regular ad insertion, which not only satisfy the entertainment needs of the passengers, but also bring new business opportunities for the operating organization.
In order to realize the above-mentioned value-added services in the vehicle, it is necessary to synchronize with the data of the central server and obtain a list of multimedia advertisement files and advertisement files from the central server.
Mobile Vehicle Monitoring Application Scenarios and Target Users
Vehicle monitoring applications are very extensive, such as buses, police cars, armored cars, fire engines, sanitation vehicles, traffic patrol cars, weather monitoring vehicles, freight cars, long-distance passenger cars, ships and other emergency rescue vehicles. The above monitoring application industry has some differences in the location and scope of vehicle monitoring. Usually, there are three main monitoring targets for vehicles.
1. Car monitoring and door monitoring
(1) There are 3 to 4 cameras in the car (in front of the car, behind the car, on the passenger door, etc.). The driver can check the car information through the display in the car. The car door can clearly monitor the appearance of the passengers on the train and prevent theft. In addition, it is possible to monitor the process of passenger coinage and credit card, and to prevent flight evasion and escorts from stealing tickets. The inside and back door monitoring of the carriage can monitor and record the situation inside the carriage, eliminate the occurrence of pinching passenger accidents and prevent crimes from committing crimes.
(2) The monitoring and dispatching management platform of the monitoring center can look at the monitoring image on the car at any time and can voice intercom.
(3) Realize the networked security monitoring and emergency handling of vehicles by the monitoring center.
(4) Monitoring and commanding of the vehicle's driving position, route, and working status by the dispatching center.
2. Road condition monitoring
It mainly monitors the road conditions in front of the vehicle and provides traffic information when a traffic accident or vehicle jam occurs.
3, monitoring center scene settings
According to user requirements, the monitoring center sets the vehicle monitoring as: selecting a specific one or more vehicles to carry out real-time positioning and video monitoring on the map; grouping the vehicles, and periodically performing video surveillance on each vehicle group; receiving an alarm After that, the vehicle will be positioned on the map and the video will pop up.
Vehicle monitoring business needs 1, user business concerns
(1) Combining the actual conditions of production safety and emergency command, it is necessary to transmit real-time video images of the site to the emergency management center in the event of an emergency emergency, and to be able to remotely command the emergency rescue work on site at the first time.
(2) Analyze and judge the occurrence of monitored objects in a timely and accurate manner, and make correct decision and command. At the same time, remote images can be stored at the headquarters of mobile command and monitoring headquarters for future reference and forensics.
(3) By tracking and monitoring, implementing line monitoring, and arranging or changing lanes more quickly, road congestion can be effectively alleviated, and vehicle management, coordination and communication of units can be further strengthened.
2, user business function requirements
(1) Driving monitoring Driving monitoring realizes image capture, video and video playback, alarm and alarm linkage functions, and controls the pan/tilt, camera zoom, preset position and cruising, etc. Execution monitoring can achieve overload monitoring, trunk security Monitoring and other multi-directional monitoring.
(2) The distress alert system can set alarm functions such as vehicle travel range alarm, speed alarm, and image status alarm.
(3) Storage and Playback Functions The image information uploaded by vehicles through wireless can be stored on the storage server of the monitoring center management platform through video recording, providing various storage methods such as planned recording, loop recording, and alarm recording. The monitoring terminal can be monitored. The center server performs video retrieval and playback operations at any time, and supports multiple search methods such as time, location, and events, and related information can form a log.
Terminal local storage video means that the monitoring terminal (monitoring center, police station, and bus transportation company) can perform local video recording of the transmitted image information during the browsing of images.
(4) Vehicle-mounted entertainment functions The vehicle-mounted terminal can also provide value-added services, such as audio and video monitoring and video recording, on-vehicle entertainment functions. In addition to receiving audio and video signals, it can also pre-store DVD, VCD and other entertainment programs, and arrange the playback sequence in any order. , Real-time automatic playback, manual playback and other functions, but also provide regular advertising spots, to meet the needs of passenger entertainment, while bringing new business opportunities. In addition, the installation of GPS module can achieve satellite positioning and voice self-navigation.
In addition, the user has on-board systems such as in-vehicle hands-free calls, on-off passenger records, and vehicle emergency calls.
3, typical user group
The typical user groups for on-board monitoring include vehicle monitoring in various industries, mainly buses, passenger cars, *, *** vehicles, armored vehicles in the financial industry, auto banks, taxis for rental companies, and premium insurance vehicles in the insurance industry. The postal vehicles of the postal service, the long-distance carriers of the transport companies, the logistics monitoring of large enterprises, the supervision and management of the navigational lights, and the ship monitoring.
In addition can also be applied to private cars, dangerous goods transport vehicles, prisoners, fire engines, water and electricity repair service vehicles, government official vehicles, medical ambulances and so on.
Car mobile monitoring product business positioning
Domestic on-board monitoring is an emerging market, and its follow-up market has huge room for development. According to market demand and capacity, the author proposes that the on-board mobile monitoring product business should focus on three areas.
1. Bus and station wagon monitoring
The realization of on-board monitoring in buses is conducive to preventing and cracking down on illegal crimes, maintaining the stability of public security, and solving the outstanding public security problems on buses; at the same time, it can also realize the timely command and dispatch of vehicles by various bus centers to improve the capacity. Optimization service.
At the same time, the deployment of bus-based on-board monitoring will also help establish a good and lasting public relationship with the government departments, implement the government and operators to jointly build a city information supervision system, and create a new vision of “a peaceful city and a harmonious societyâ€.
2, *, traffic vehicle monitoring
Nationwide, the development of monitoring products in the * and transportation industries already has economies of scale. If further development and deployment of on-board applications will inevitably generate new business increments, real-time vehicle monitoring and traffic applications will exert technological advantages and improvements. The flexible response capabilities of the above-mentioned units can be transmitted to the command center in a timely manner through wireless real-time video, which facilitates remote command and dispatch, reduces the risk, greatly shortens the reaction time, and enhances the combat effectiveness of the police force.
3, fire, water conservancy, material transportation
Firefighting and water conservancy industries also belong to the industry scope applicable to on-board monitoring. In mountainous areas, coastal areas, and islands, where it is difficult to lay a wired network and the natural conditions are relatively poor, on-board monitoring realizes real-time monitoring of firefighting and water conservancy sites in other places. Remote command and dispatch enhances rapid response capabilities while also reducing manpower investment and operating costs.
In short, in the mobile value-added services market, it is expected that the proportion of revenue from mobile value-added services in China will account for more than 25% of the main business revenue of mobile operators this year. The development of mobile automotive services will certainly bring new growth points to value-added telecom services. With the continuous improvement of the functions of the mobile vehicle business, its scope of application will become wider and wider, and its role will become greater and greater. It will not only be widely used in long-distance buses, buses, and buses, but also in trains, Ships, ambulances, fire engines, institutions, schools, kindergartens and other units have a very wide range of applications for shuttle buses. At the same time, on-board mobile surveillance products are also conducive to innovation and development, and various social cooperation and value-added new services are continuously introduced. It also makes 3G-related value-added services develop rapidly.
Vehicle monitoring uses vehicle-mounted video server, which connects 3 to 4 cameras. Video server through EDGE/cdma2000 1x/Wi-Fi network, monitoring center can carry out real-time monitoring and transmission of images in the vehicle, and uses dual-stream technology, local video recording using D1 resolution, network transmission using CIF/QVGA/QCIF resolution Rate, to achieve local encoding storage and remote storage.
1, vehicle terminal
The vehicle terminal is a front-end device of the vehicle monitoring and management system, and is generally installed in various vehicles. The vehicle terminal equipment is mainly composed of various external devices such as a car video server, an LCD touch screen, an external camera, a call controller, and a car alarm.
The on-board video server collects audio and video signals and compresses them into digital streams, which are transmitted to user monitoring centers through wireless networks such as cdma20001x to achieve the purpose of remote monitoring and emergency command. Vehicle video servers require dual-stream simultaneous encoding, including locally independent video streams and network streams.
The user needs to extract the video surveillance data and can use two methods: one is through the car terminal USB port, the second is through EV-DO (cdma20001x, Wi-Fi) remote retrieving.
2, monitoring center
The monitoring center is the core of the dispatching and commanding system. It is a remote visual commanding and monitoring management platform. It monitors all on-site vehicles and realizes two-way audio and video interactive command. The electronic map on the monitoring center can display the intuitive location of the vehicle and pass the wireless. The network monitors the vehicle settings. For example, by configuring the pan-tilt, you can control the front-end camera on the car.
At the same time, the monitoring center can implement real-time, centralized, and intuitive monitoring and dispatching of the controllable operating vehicles, and can be linked with the 110 and 119 police stations to timely dispatch the police to arrive at the scene in the event of a police emergency to ensure emergency treatment. effectiveness.
3, transmission network
Unlike fixed monitoring using wired networks, on-board monitoring can only rely on wireless networks. China Telecom's mobile network is a network mode suitable for audio and video data transmission in wide area wireless networks.
Car monitoring system functions and features 1, on-board monitoring functions (1) real-time video monitoring
The monitoring center can remotely monitor vehicle video in real time, and the onboard wireless video server (single or dual card) supports multi-channel video remote viewing.
(2) Video storage and playback
With a multi-level storage structure, the car has a car hard disk, storage CIF (D1), wireless upload CIF. Car video can be remotely searched and downloaded.
(3) Car alarm linkage
The on-board alarm linkage mainly includes an external alarm button, that is, the driver can report an alarm to the monitoring center in the event of an emergency during driving. The second is a two-way voice call.
(4) GPS positioning
Built-in GPS can track the trajectory of the vehicle to fully understand the operating conditions.
2, on-board monitoring features
The monitoring system supports monitoring through a variety of terminals, mainly including clients such as PCs, video walls, and mobile terminals, and has functions such as remote video browsing, remote control, multi-screen monitoring, multi-screen polling, manual recording, and video playback.
(1) Monitoring Client
The monitoring center is connected to the telecommunication IDC computer room through a dedicated line. The customer can perform video browsing and PTZ control of the camera at each monitoring point.
(2) Large-screen video wall
The network video decoder can be installed to decode and decode the digital signals collected from the front end into images and sounds and transmit them to the TV wall to provide users with centralized real-time display of multi-channel monitoring point images.
(3) Mobile phone monitoring
The 3G mobile phone terminal with built-in monitoring client software enables remote video browsing, remote cloud mirror control, video capture and other functions to meet customers' needs for remote video viewing and remote emergency command. It provides 3G customers with anytime, anywhere video surveillance services.
In addition, on-board monitoring has other characteristics. The first is distributed monitoring, centralized management, intelligent setup, and humanized operation. The second is the integrated design of the wireless video server. The system has high reliability. Third, dual-stream technology is used, local video uses D1 resolution, and network transmission uses CIF/QVGA resolution. The fourth method is H.264 compression encoding, which supports multi-channel video access at the same time. Each channel video is 8-10 frames, and the video is more clear. Fifth, wireless network transmission, China Telecom's 3G upstream bandwidth up to 1.8Mbit/s. Sixth, the system has strong expansion capabilities.
Vehicle monitoring key points 1, networked vehicle monitoring
Through telecom CDMA wireless network, it collects moving vehicle video information and transmits it to the monitoring center for remote video browsing and remote control. At the same time, the vehicle terminal connects the LCD touch screen and installs the GPS module to achieve satellite positioning and voice self-navigation functions. The system sends monitoring and positioning information to the dispatch monitoring center. The monitoring center realizes large-screen video images and electronic map display, and can dispatch, monitor and manage vehicles in a timely and accurate manner. The monitoring center can also send various information such as dispatch, road conditions, and news to the vehicle to provide better services.
2. System stability and shock absorption
Compared with fixed monitoring, the harsh environment for on-board applications requires the provision of a relatively stable terminal system. In terms of power supply for on-board equipment, because of the special use environment, the vehicle needs lower power consumption and stronger anti-interference ability. The power supply management fully considers vehicle startup, high-speed motion, voltage fluctuation during driving, electromagnetic interference, and dusty Complex environment and other issues ensure the reliability and stability of the system during operation.
If the on-board equipment adopts hard disk storage protection technology to solve the shock absorption problem, in addition to the machine to be shock-absorbing, the hard disk must pay particular attention to shock absorption. At present, some vehicle-mounted flash cards are stored to prevent the hard disk from being damaged by vibration.
3, onboard value-added services
The car terminal is connected to the liquid crystal display, while providing audio and video monitoring and video recording, it also provides new value-added services - car entertainment functions, which can receive radio, television and other signals, but also pre-recorded DVD, VCD and other entertainment programs, any arrangement Playback order, real-time automatic play, manual play, loop play, breakpoint playback, and regular ad insertion, which not only satisfy the entertainment needs of the passengers, but also bring new business opportunities for the operating organization.
In order to realize the above-mentioned value-added services in the vehicle, it is necessary to synchronize with the data of the central server and obtain a list of multimedia advertisement files and advertisement files from the central server.
Mobile Vehicle Monitoring Application Scenarios and Target Users
Vehicle monitoring applications are very extensive, such as buses, police cars, armored cars, fire engines, sanitation vehicles, traffic patrol cars, weather monitoring vehicles, freight cars, long-distance passenger cars, ships and other emergency rescue vehicles. The above monitoring application industry has some differences in the location and scope of vehicle monitoring. Usually, there are three main monitoring targets for vehicles.
1. Car monitoring and door monitoring
(1) There are 3 to 4 cameras in the car (in front of the car, behind the car, on the passenger door, etc.). The driver can check the car information through the display in the car. The car door can clearly monitor the appearance of the passengers on the train and prevent theft. In addition, it is possible to monitor the process of passenger coinage and credit card, and to prevent flight evasion and escorts from stealing tickets. The inside and back door monitoring of the carriage can monitor and record the situation inside the carriage, eliminate the occurrence of pinching passenger accidents and prevent crimes from committing crimes.
(2) The monitoring and dispatching management platform of the monitoring center can look at the monitoring image on the car at any time and can voice intercom.
(3) Realize the networked security monitoring and emergency handling of vehicles by the monitoring center.
(4) Monitoring and commanding of the vehicle's driving position, route, and working status by the dispatching center.
2. Road condition monitoring
It mainly monitors the road conditions in front of the vehicle and provides traffic information when a traffic accident or vehicle jam occurs.
3, monitoring center scene settings
According to user requirements, the monitoring center sets the vehicle monitoring as: selecting a specific one or more vehicles to carry out real-time positioning and video monitoring on the map; grouping the vehicles, and periodically performing video surveillance on each vehicle group; receiving an alarm After that, the vehicle will be positioned on the map and the video will pop up.
Vehicle monitoring business needs 1, user business concerns
(1) Combining the actual conditions of production safety and emergency command, it is necessary to transmit real-time video images of the site to the emergency management center in the event of an emergency emergency, and to be able to remotely command the emergency rescue work on site at the first time.
(2) Analyze and judge the occurrence of monitored objects in a timely and accurate manner, and make correct decision and command. At the same time, remote images can be stored at the headquarters of mobile command and monitoring headquarters for future reference and forensics.
(3) By tracking and monitoring, implementing line monitoring, and arranging or changing lanes more quickly, road congestion can be effectively alleviated, and vehicle management, coordination and communication of units can be further strengthened.
2, user business function requirements
(1) Driving monitoring Driving monitoring realizes image capture, video and video playback, alarm and alarm linkage functions, and controls the pan/tilt, camera zoom, preset position and cruising, etc. Execution monitoring can achieve overload monitoring, trunk security Monitoring and other multi-directional monitoring.
(2) The distress alert system can set alarm functions such as vehicle travel range alarm, speed alarm, and image status alarm.
(3) Storage and Playback Functions The image information uploaded by vehicles through wireless can be stored on the storage server of the monitoring center management platform through video recording, providing various storage methods such as planned recording, loop recording, and alarm recording. The monitoring terminal can be monitored. The center server performs video retrieval and playback operations at any time, and supports multiple search methods such as time, location, and events, and related information can form a log.
Terminal local storage video means that the monitoring terminal (monitoring center, police station, and bus transportation company) can perform local video recording of the transmitted image information during the browsing of images.
(4) Vehicle-mounted entertainment functions The vehicle-mounted terminal can also provide value-added services, such as audio and video monitoring and video recording, on-vehicle entertainment functions. In addition to receiving audio and video signals, it can also pre-store DVD, VCD and other entertainment programs, and arrange the playback sequence in any order. , Real-time automatic playback, manual playback and other functions, but also provide regular advertising spots, to meet the needs of passenger entertainment, while bringing new business opportunities. In addition, the installation of GPS module can achieve satellite positioning and voice self-navigation.
In addition, the user has on-board systems such as in-vehicle hands-free calls, on-off passenger records, and vehicle emergency calls.
3, typical user group
The typical user groups for on-board monitoring include vehicle monitoring in various industries, mainly buses, passenger cars, *, *** vehicles, armored vehicles in the financial industry, auto banks, taxis for rental companies, and premium insurance vehicles in the insurance industry. The postal vehicles of the postal service, the long-distance carriers of the transport companies, the logistics monitoring of large enterprises, the supervision and management of the navigational lights, and the ship monitoring.
In addition can also be applied to private cars, dangerous goods transport vehicles, prisoners, fire engines, water and electricity repair service vehicles, government official vehicles, medical ambulances and so on.
Car mobile monitoring product business positioning
Domestic on-board monitoring is an emerging market, and its follow-up market has huge room for development. According to market demand and capacity, the author proposes that the on-board mobile monitoring product business should focus on three areas.
1. Bus and station wagon monitoring
The realization of on-board monitoring in buses is conducive to preventing and cracking down on illegal crimes, maintaining the stability of public security, and solving the outstanding public security problems on buses; at the same time, it can also realize the timely command and dispatch of vehicles by various bus centers to improve the capacity. Optimization service.
At the same time, the deployment of bus-based on-board monitoring will also help establish a good and lasting public relationship with the government departments, implement the government and operators to jointly build a city information supervision system, and create a new vision of “a peaceful city and a harmonious societyâ€.
2, *, traffic vehicle monitoring
Nationwide, the development of monitoring products in the * and transportation industries already has economies of scale. If further development and deployment of on-board applications will inevitably generate new business increments, real-time vehicle monitoring and traffic applications will exert technological advantages and improvements. The flexible response capabilities of the above-mentioned units can be transmitted to the command center in a timely manner through wireless real-time video, which facilitates remote command and dispatch, reduces the risk, greatly shortens the reaction time, and enhances the combat effectiveness of the police force.
3, fire, water conservancy, material transportation
Firefighting and water conservancy industries also belong to the industry scope applicable to on-board monitoring. In mountainous areas, coastal areas, and islands, where it is difficult to lay a wired network and the natural conditions are relatively poor, on-board monitoring realizes real-time monitoring of firefighting and water conservancy sites in other places. Remote command and dispatch enhances rapid response capabilities while also reducing manpower investment and operating costs.
In short, in the mobile value-added services market, it is expected that the proportion of revenue from mobile value-added services in China will account for more than 25% of the main business revenue of mobile operators this year. The development of mobile automotive services will certainly bring new growth points to value-added telecom services. With the continuous improvement of the functions of the mobile vehicle business, its scope of application will become wider and wider, and its role will become greater and greater. It will not only be widely used in long-distance buses, buses, and buses, but also in trains, Ships, ambulances, fire engines, institutions, schools, kindergartens and other units have a very wide range of applications for shuttle buses. At the same time, on-board mobile surveillance products are also conducive to innovation and development, and various social cooperation and value-added new services are continuously introduced. It also makes 3G-related value-added services develop rapidly.
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