Public security is the cornerstone of national security and social stability. It is an important condition for economic and social development. It is a basic guarantee for the people to live and work in peace and contentment. It is a major strategic issue that must be resolved in building a socialist harmonious society. Therefore, the emergency command system is in full swing. in. However, when it comes to practical applications, it often encounters many problems from various aspects. This article tries to discuss common problems and put forward some opinions on how to avoid them.
With the improvement of China’s overall economic strength, governments at all levels have increasingly invested in the construction of emergency command systems. The core of emergency command system construction is based on a data information processing platform that includes a command center dispatching platform. Transmission network and front-end information acquisition equipment are three parts. At the same time, each link of the emergency command system is very important. Due to the unpredictable nature of emergencies, different implementation plans need to be considered in advance. As a supplier of wireless mobile video transmission equipment and satellite communication equipment for emergency communication systems, emergency response There is a certain understanding of the command system construction and the selection and application of various types of equipment. Here are some suggestions for your reference.
Emergency command system should have an industry standard
At present, the national emergency command platform is implemented by the National Emergency Management Office, but the provinces and cities have not completely followed the national emergency platform model. Of course, there are many reasons. For example, the overall design unit failed to fully consider new technologies and products during design. The basic network construction and investment are not the same everywhere, the implementation of the emergency command system for local government organizations is not standardized, the system integration is high, the equipment procurement range is complex, there are various types of equipment types, and the supplier's technical level and after-sales service vary. Qi, together with the extremely random use environment, each user has few professionals, and the emergency command system is difficult to use and maintain in the event of an emergency, if it follows a mature emergency command system platform construction guidelines and related technical standards. Construction, equipment, versatility, interoperability, products have strict technical standards, access to existing communications networks, strict radio management systems and regulations, strict information protection measures, and specialized personnel training Institutions, etc., can make the emergency command system close When fully functional.
It is reported that relevant departments in China have formulated or are in the process of formulating the "Overall Technical Specifications for the 340M Wireless Mobile Video Transmission System" and the "Technical Specification for Uplinks of the 340 Mega Mobile Image Transmission System" and promoted them in relevant departments.
Some backbone enterprises are also carrying out industry standardization work. Shenzhen Huawei Technologies Co., Ltd. has launched the UC&CISV technology certification program to certify the mutual product integration solutions, system networking, secondary development capabilities, and docking tests of agents and integrators. Unified non-proprietary protocols such as H.264 encoding and SIP protocol solve the commonality problem of emergency command system video conferences and other video transmission devices such as network video surveillance devices. This work is highly forward-looking and can provide users with pre-certified system integration solutions to solve the interconnection problems in the construction of emergency command systems.
Regulating the emergency command system market
As a national-level emergency command system construction, the overall design and implementation requires the country's large-scale key scientific research units to undertake, with top-level information integration capabilities and qualifications, but the construction of emergency command systems at the local government level, there is no limit in this regard, the emergency command The construction of the system is often not standardized. The contractor has to fight for construction projects to fight prices, fight costs, and ultimately cause poor system stability, after-sales service is not guaranteed. Therefore, in addition to building standards, it is also necessary to set a threshold for contractors and product suppliers to protect companies that have legitimate operations and have technical strength and integration capabilities and regulations.
Wireless transmission system's position in emergency command system
Although the wireless mobile video transmission system occupies a small proportion in the emergency command system support platform, it often plays a key role in the critical moment. The wireless mobile video transmission system of the emergency command system communication equipment is highly targeted. In addition to the communication command vehicle platform, it is also widely used in professional rescue vehicles, professional anti-riot vehicles, helicopters, unmanned aerial vehicles, and various types of aircraft and robot platforms. Because the wireless transmission system development company has a thorough understanding of the application of the emergency command system, Understand the user's professional applications and requirements, therefore, the developed products are very suitable for supporting the use of emergency command systems. For example, the multi-carrier modulation technology system adopted by Shenzhen Keweitai Company has its inherent advantages, namely, one-way transmission, and the central receiving system is zero. Interference, unlike two-way data transmission systems, is a guarantee for the reliability and practicality of the system-integrated emergency command system today when radio resources are scarce and electromagnetic interference is increasingly serious. In the face of a complex emergency on-site environment, it is necessary not only to consider the coordination and cooperation of multi-sector communication tools, but also to consider the interconnection and independence between systems. If a set of equipment interferes with the work of other systems, it will damage other systems and even The normal work of the entire emergency rescue platform, as long as a mistake, will be full of losses.
The government needs to purify the production and sales of radio products
China is a big producer of radio products. In the emergency command system, radio communication products occupy a large proportion, but the production and sales of radio products are very irregular. There are several major problems:
Advanced communication technology access
With the continuous improvement of China’s communication technology research capabilities, some new technologies are constantly appearing, and companies are looking for new markets for these new technologies. When new technologies are put on the market, they do not understand the laws and regulations concerning the use of products. Radio products, which are derived from 3G, 4G, LTE, WIMAX, and other communication technologies, are very advanced and have their own advantages. However, some companies do not understand that radio resources are national assets and the State Radio Management Committee is specialized in management. State agencies that allocate radio resources currently have only 8M of frequency bandwidth approved by the State Committee for use in wireless mobile video transmission systems. The bandwidth of each channel is only 2MHz, but many manufacturers have applied various new wireless communication technologies to this system. System, some use bandwidth up to 20MHz, a single channel bandwidth up to 5M or more, and the state has no committee limited wireless mobile video portable station power limit of 5W, and some manufacturers will increase the power to 10W or even higher. Some companies sell dog meat, use a set of equipment that meets the testing standards to obtain type approval certificates, production is indeed a product of different standards, and there are frequency resources for other public utilities that are produced by companies that violate regulations. There was no R&D approval for product R&D, and product model approval was not applied.
The sales market is mixed and full of people
The radio communication equipment used in the emergency command system is not a mass consumer product such as a mobile phone, but is a complex communication system like mobile communication. The sales company needs to have radio engineering construction experience and conditions, and some companies do not have talents in this area. It was found that wireless emergency communications products have the advantage of bypassing the building blockage, or do not need to dig trenches and arbitrarily use the products of the emergency command system for civilian security monitoring. These actions have seriously interfered with the emergency command system during emergencies. Normal use.
The government should strengthen supervision
In September 2010, the Ministry of Industry and Information Technology released the "People's Republic of China Ministry of Industry and Information Technology," which issued the "Regulations of the People's Republic of China for Radio Frequency Division" in September 2010, issued the "Regulations on Radio Regulations of the People's Republic of China" in the same period, and issued the "China" in 1993. The Radio Regulations of the People's Republic of China has clearly stipulated the production and use of radio equipment.
During the Shenzhen Universiade in 2011, in order to guarantee the radio safety of the Universiade, on July 22nd, the People's Government of Guangdong Province issued the “Circular on the Implementation of Local Radio Regulations during the 26th World University Summer Gamesâ€. The "Notice" requires that local radio regulations be implemented in Shenzhen during the opening, closing ceremonies and competitions of the Universiade. It also stipulates the regulatory time, scope of control, content of controls, and organization and implementation departments for control.
The “Notice†stipulates that during the opening and closing ceremonies, the use of radio interphones, industrial wireless remote controllers, wireless monitors, etc. will be stopped within 2 km of the venue; the use of outdoor wireless LAN will be stopped within 1 km of all Universiade venues. (WLAN) Base stations and radio image transmission equipment; during road races and marathon races, the use of radio intercoms and other launch equipment was stopped within 2 km of each side of the line. During the Universiade, 61 units and 1471 frequencies have been approved for use in the opening ceremony, involving various radio services such as opening and closing ceremonies, command and dispatch, security prevention and control, media communication, image transmission, communications and transportation, and water supply and power supply.
Problems to be solved in emergency command system transmission
The future development direction of the emergency command system should be based on the public information network, which is based on the operator's network. In recent years, the successful spread of 3G networks has led to the emergence of emergency communications equipment based on 3G networks. The information transmission range is farther, the accelerating speed of the system and its low cost also make the emergency work at the grassroots level affordable. From the perspective of video transmission, although the video resolution transmitted by 3G equipment is low and the delay is large, The problem of whether the image of the emergency command system has been uploaded has been solved, and vivid and real-time evidence materials have been provided for the emergency command work. With the establishment of more advanced and higher-speed wireless network systems such as 4G/LTE, the supporting platform for emergency commanding will be completely changed, the information volume will be greatly enriched, and the rapid processing capability of the emergency command system will be greatly improved.
In the emergency command system support platform, there is a satellite communication system. For example, the country has built a two-way emergency disaster preparedness emergency satellite system. China currently has weak satellite communication technology, high operating costs, high operating costs, and insufficient bandwidth. However, With the continuous advancement of communication satellite technologies at home and abroad, the capacity of satellite communication systems will also be greatly increased. At present, some government departments in China do not have a dedicated satellite ground station, satellite ground station systems are also different, and communication network and compatibility are poor. In the future, these problems can be solved. For example, satellite communication channels generally have only 1-2 Mbits of bandwidth and can transmit video conferences and standard definition videos. However, to achieve high-definition video transmission, more than 4 Mbits of bandwidth is required. These bottlenecks will be accompanied by large-capacity communications. Satellites can be gradually resolved.
About the front-end information acquisition equipment including wireless mobile video and digital trunking systems, will continue to develop with the continuous emergence of new technologies in the future, new channel modulation technologies, new video coding technologies, new computer network communication technologies, etc. And so on, will be applied to the emergency command system, the future of the emergency command system image and video information will achieve high-definition. In a word, the emergency command system is continuously improved and developed along with the technical progress of the support platform.
Through years of experience in emergency communications support, we have felt deeply that the national radio authority and other relevant departments should strengthen the management of emergency command system construction and ensure the safety and smoothness of the emergency command support system, especially the communication system.
With the improvement of China’s overall economic strength, governments at all levels have increasingly invested in the construction of emergency command systems. The core of emergency command system construction is based on a data information processing platform that includes a command center dispatching platform. Transmission network and front-end information acquisition equipment are three parts. At the same time, each link of the emergency command system is very important. Due to the unpredictable nature of emergencies, different implementation plans need to be considered in advance. As a supplier of wireless mobile video transmission equipment and satellite communication equipment for emergency communication systems, emergency response There is a certain understanding of the command system construction and the selection and application of various types of equipment. Here are some suggestions for your reference.
Emergency command system should have an industry standard
At present, the national emergency command platform is implemented by the National Emergency Management Office, but the provinces and cities have not completely followed the national emergency platform model. Of course, there are many reasons. For example, the overall design unit failed to fully consider new technologies and products during design. The basic network construction and investment are not the same everywhere, the implementation of the emergency command system for local government organizations is not standardized, the system integration is high, the equipment procurement range is complex, there are various types of equipment types, and the supplier's technical level and after-sales service vary. Qi, together with the extremely random use environment, each user has few professionals, and the emergency command system is difficult to use and maintain in the event of an emergency, if it follows a mature emergency command system platform construction guidelines and related technical standards. Construction, equipment, versatility, interoperability, products have strict technical standards, access to existing communications networks, strict radio management systems and regulations, strict information protection measures, and specialized personnel training Institutions, etc., can make the emergency command system close When fully functional.
It is reported that relevant departments in China have formulated or are in the process of formulating the "Overall Technical Specifications for the 340M Wireless Mobile Video Transmission System" and the "Technical Specification for Uplinks of the 340 Mega Mobile Image Transmission System" and promoted them in relevant departments.
Some backbone enterprises are also carrying out industry standardization work. Shenzhen Huawei Technologies Co., Ltd. has launched the UC&CISV technology certification program to certify the mutual product integration solutions, system networking, secondary development capabilities, and docking tests of agents and integrators. Unified non-proprietary protocols such as H.264 encoding and SIP protocol solve the commonality problem of emergency command system video conferences and other video transmission devices such as network video surveillance devices. This work is highly forward-looking and can provide users with pre-certified system integration solutions to solve the interconnection problems in the construction of emergency command systems.
Regulating the emergency command system market
As a national-level emergency command system construction, the overall design and implementation requires the country's large-scale key scientific research units to undertake, with top-level information integration capabilities and qualifications, but the construction of emergency command systems at the local government level, there is no limit in this regard, the emergency command The construction of the system is often not standardized. The contractor has to fight for construction projects to fight prices, fight costs, and ultimately cause poor system stability, after-sales service is not guaranteed. Therefore, in addition to building standards, it is also necessary to set a threshold for contractors and product suppliers to protect companies that have legitimate operations and have technical strength and integration capabilities and regulations.
Wireless transmission system's position in emergency command system
Although the wireless mobile video transmission system occupies a small proportion in the emergency command system support platform, it often plays a key role in the critical moment. The wireless mobile video transmission system of the emergency command system communication equipment is highly targeted. In addition to the communication command vehicle platform, it is also widely used in professional rescue vehicles, professional anti-riot vehicles, helicopters, unmanned aerial vehicles, and various types of aircraft and robot platforms. Because the wireless transmission system development company has a thorough understanding of the application of the emergency command system, Understand the user's professional applications and requirements, therefore, the developed products are very suitable for supporting the use of emergency command systems. For example, the multi-carrier modulation technology system adopted by Shenzhen Keweitai Company has its inherent advantages, namely, one-way transmission, and the central receiving system is zero. Interference, unlike two-way data transmission systems, is a guarantee for the reliability and practicality of the system-integrated emergency command system today when radio resources are scarce and electromagnetic interference is increasingly serious. In the face of a complex emergency on-site environment, it is necessary not only to consider the coordination and cooperation of multi-sector communication tools, but also to consider the interconnection and independence between systems. If a set of equipment interferes with the work of other systems, it will damage other systems and even The normal work of the entire emergency rescue platform, as long as a mistake, will be full of losses.
The government needs to purify the production and sales of radio products
China is a big producer of radio products. In the emergency command system, radio communication products occupy a large proportion, but the production and sales of radio products are very irregular. There are several major problems:
Advanced communication technology access
With the continuous improvement of China’s communication technology research capabilities, some new technologies are constantly appearing, and companies are looking for new markets for these new technologies. When new technologies are put on the market, they do not understand the laws and regulations concerning the use of products. Radio products, which are derived from 3G, 4G, LTE, WIMAX, and other communication technologies, are very advanced and have their own advantages. However, some companies do not understand that radio resources are national assets and the State Radio Management Committee is specialized in management. State agencies that allocate radio resources currently have only 8M of frequency bandwidth approved by the State Committee for use in wireless mobile video transmission systems. The bandwidth of each channel is only 2MHz, but many manufacturers have applied various new wireless communication technologies to this system. System, some use bandwidth up to 20MHz, a single channel bandwidth up to 5M or more, and the state has no committee limited wireless mobile video portable station power limit of 5W, and some manufacturers will increase the power to 10W or even higher. Some companies sell dog meat, use a set of equipment that meets the testing standards to obtain type approval certificates, production is indeed a product of different standards, and there are frequency resources for other public utilities that are produced by companies that violate regulations. There was no R&D approval for product R&D, and product model approval was not applied.
The sales market is mixed and full of people
The radio communication equipment used in the emergency command system is not a mass consumer product such as a mobile phone, but is a complex communication system like mobile communication. The sales company needs to have radio engineering construction experience and conditions, and some companies do not have talents in this area. It was found that wireless emergency communications products have the advantage of bypassing the building blockage, or do not need to dig trenches and arbitrarily use the products of the emergency command system for civilian security monitoring. These actions have seriously interfered with the emergency command system during emergencies. Normal use.
The government should strengthen supervision
In September 2010, the Ministry of Industry and Information Technology released the "People's Republic of China Ministry of Industry and Information Technology," which issued the "Regulations of the People's Republic of China for Radio Frequency Division" in September 2010, issued the "Regulations on Radio Regulations of the People's Republic of China" in the same period, and issued the "China" in 1993. The Radio Regulations of the People's Republic of China has clearly stipulated the production and use of radio equipment.
During the Shenzhen Universiade in 2011, in order to guarantee the radio safety of the Universiade, on July 22nd, the People's Government of Guangdong Province issued the “Circular on the Implementation of Local Radio Regulations during the 26th World University Summer Gamesâ€. The "Notice" requires that local radio regulations be implemented in Shenzhen during the opening, closing ceremonies and competitions of the Universiade. It also stipulates the regulatory time, scope of control, content of controls, and organization and implementation departments for control.
The “Notice†stipulates that during the opening and closing ceremonies, the use of radio interphones, industrial wireless remote controllers, wireless monitors, etc. will be stopped within 2 km of the venue; the use of outdoor wireless LAN will be stopped within 1 km of all Universiade venues. (WLAN) Base stations and radio image transmission equipment; during road races and marathon races, the use of radio intercoms and other launch equipment was stopped within 2 km of each side of the line. During the Universiade, 61 units and 1471 frequencies have been approved for use in the opening ceremony, involving various radio services such as opening and closing ceremonies, command and dispatch, security prevention and control, media communication, image transmission, communications and transportation, and water supply and power supply.
Problems to be solved in emergency command system transmission
The future development direction of the emergency command system should be based on the public information network, which is based on the operator's network. In recent years, the successful spread of 3G networks has led to the emergence of emergency communications equipment based on 3G networks. The information transmission range is farther, the accelerating speed of the system and its low cost also make the emergency work at the grassroots level affordable. From the perspective of video transmission, although the video resolution transmitted by 3G equipment is low and the delay is large, The problem of whether the image of the emergency command system has been uploaded has been solved, and vivid and real-time evidence materials have been provided for the emergency command work. With the establishment of more advanced and higher-speed wireless network systems such as 4G/LTE, the supporting platform for emergency commanding will be completely changed, the information volume will be greatly enriched, and the rapid processing capability of the emergency command system will be greatly improved.
In the emergency command system support platform, there is a satellite communication system. For example, the country has built a two-way emergency disaster preparedness emergency satellite system. China currently has weak satellite communication technology, high operating costs, high operating costs, and insufficient bandwidth. However, With the continuous advancement of communication satellite technologies at home and abroad, the capacity of satellite communication systems will also be greatly increased. At present, some government departments in China do not have a dedicated satellite ground station, satellite ground station systems are also different, and communication network and compatibility are poor. In the future, these problems can be solved. For example, satellite communication channels generally have only 1-2 Mbits of bandwidth and can transmit video conferences and standard definition videos. However, to achieve high-definition video transmission, more than 4 Mbits of bandwidth is required. These bottlenecks will be accompanied by large-capacity communications. Satellites can be gradually resolved.
About the front-end information acquisition equipment including wireless mobile video and digital trunking systems, will continue to develop with the continuous emergence of new technologies in the future, new channel modulation technologies, new video coding technologies, new computer network communication technologies, etc. And so on, will be applied to the emergency command system, the future of the emergency command system image and video information will achieve high-definition. In a word, the emergency command system is continuously improved and developed along with the technical progress of the support platform.
Through years of experience in emergency communications support, we have felt deeply that the national radio authority and other relevant departments should strengthen the management of emergency command system construction and ensure the safety and smoothness of the emergency command support system, especially the communication system.
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