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Solution for Emergency Communication in Digital Cities
Emergency communication solution is a temporary communication network quickly established in response to sudden large-scale natural disasters or public events. It ensures the smooth flow of rescue, emergency assistance and necessary communication for disaster relief organizations and personnel by comprehensively utilizing various communication resources, so as to minimize disaster losses and maintain social security and stability.
Satellink’s emergency communication solution adopts the architecture of “terminal (smart hardware) + cloud (information management platform)”, which covers satellite communication products, terminals of the Internet of Things (IOT), converged terminals of public/private networks, information management platform (Xingyuntong platform), etc., so as to meet the needs of the State and various emergency organizations in dealing with various emergencies and play the role of disaster reduction and relief.
China has a vast territory, with a span of over 5000 kilometers, and a complex terrain, most of which are mountainous areas, plateaus and hills. In case of any geological disasters, the ground network will be paralyzed and the wireless communication distance will be limited, while satellite communication is widely used in emergency relief because of its large area coverage and long communication distance. Satellite communication has the following features:
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1) All-weather communication function, which is not easily affected by natural disasters such as typhoons, earthquakes and floods on the ground;
2) All-round service function: voice call, video transmission, wireless intercom, and internet access of terminals;
3) It is mobile and flexible, and can be used by individual, on-board, indoors, shipborne and airborne. It is quick to set up stations and flexible in networking.
Satellink’s emergency communication solution has played an important role in disaster-relief communication against typhoons such as Bebinca and Mangkhut in 2018. In addition, our solutions have experienced many rounds of actual combat tests in the government emergency relief work in Zhejiang, Guangdong, Henan and other provinces, and become a new means of emergency communication support, which has improved the emergency communication support capabilities and the emergency communication needs of emergency rescue and disaster relief, command and dispatch in various regions.
800MHz Early Warning Communication Solution for Railways
The rapid growth of railway mileage and the increasing complexity of railway network have affected the operating efficiency and cost of railway daily operations. The informatization and modernization of railway operations is an inevitable trend. SATELLINK provides customized communication solutions for railway operations according to specific railway application scenarios.
Based on the provisions of the Measures for the Construction Safety Management of Railway Operation Lines (Railway Operation Document No.280 [2012]), the station liaison (dispatcher) and on-site guards shall be set up for the on-line maintenance and safety protection of railway operation lines according to the regulations. On-site protection personnel will notify the on-line operators and the liaison officer of the dispatching office mainly by observing whether the train has arrived. However, this method will be greatly affected by external factors. Poor observation conditions in rain, fog and snow or other factors may lead to an untimely observation, so that the approach of the train cannot be found in a timely manner, and therefore it will affect the personal safety of the on-line operators.
Moreover, the continuous speed-up of the railways highlights the problems that on-site operators can’t collect accurate working position information and the early warning information conveyed to on-site operators has unclear directivity, which greatly increase the degree of threat to the personal safety of operators along the railway lines, result in frequent accidents, and huge losses to railway management departments and the society.
Portable T801 Terminal of Satellink is an smart terminal with high expansion and multi-functions. This product adopts the professional configuration design with high-performance CPU, front-mounted high-loudness loudspeaker and high-capacity battery. In addition to the integration of basic functions such as public network intercom, dual-mode DMR intercom, NFC and industrial-grade starlight camera, it has customized and developed the functions such as train approaching early warning and high-precision positioning for the railway industry. Combined with technologies such as operator network, audio and video and location scheduling, it brings a brand-new solution for railway operation scenes.
Early Warning Function for Train Approach
Portable T801 Terminal has a built-in railway 800MHz signal receiving module, which sends train approaching warning information (train number, up or down train, speed, kilometer post) through train LBJ (800MHz locomotive radio station) when the train is running. When T801 Terminal receives the train approaching warning information, it will send out sound and light prompts (voice broadcast, vibration, and warning lights) to remind the protection on site.
High precision positioning function
Portable T801 Terminal applies China own Beidou navigation satellite system to the safety warning of railway operators to ensure their personal safety. The terminal has built-in Beidou high-precision RTK positioning module, which can provide high-precision position data by receiving Beidou satellite navigation and positioning messages and fusing differential data, and the positioning accuracy can reach sub-meter level. Combined with the platform of Xingyuntong Command and Debugging System, it can realize the high-precision positioning and activity track tracking of field operators, and provide the function of setting the electronic fence in the operation area, which can help to strengthen the monitoring of field operators and standardize the field operation process, and play a dual role in ensuring the safety of field operators and improving the operation efficiency.
Our T801 terminal product has been applied in many railway sections in China, and its customized functional design for railways meets the operation requirements of different railway scenes.
Solution for Ocean Communication
China has a vast sea area under its jurisdiction, with a total coastline of over 18,000 kilometers. The marine environment is complex and changeable, and its security situation is complex. All kinds of marine natural disasters and maritime emergencies bring serious harm to marine activities. Maritime emergency communication ability is the basic guarantee to effectively deal with marine natural disasters and emergencies.
After more than three years of testing and verification, the Ministry of Agriculture and Rural Affairs officially promulgated Technical Specification for Fishery Shipborne Terminals based on TTsat Satellite System (SCT 6103-2020), which determined the application standards and specifications based on Tiantong communication satellite at sea, and solved the problems, such as, lack of marine basic communication facilities, harsh marine working conditions, sudden occurrence of maritime emergency events, short emergency response window and serious consequences. Based on this specification, SATELLINK also launched a “cloud + terminal” marine Tiantong communication solution with high guarantee requirements.
Among them, “Tiantong Shipborne Command and Management System” in the cloud terminal is a multi-functional platform that provides ship call, information release, ship positioning and distress alarm for all marine and fishery administrations. Tiantong satellite mobile communication system independently developed by China was used in this system to solve the problems, such as, failure to contact offshore personnel in time”, “failure to obtain the alarm signal of people in distress in time” and “failure to determine the position of people in distress” in the current maritime search and rescue work.
Combined with the ship-borne Tiantong terminal, the system supports:
1) Make ordinary voice calls under the public network with operators;
2) Make ordinary voice calls to contact the personnel of the command center in case of no public network;
3) Report the positioning information passively (Beidou navigation and positioning system, which can be connected to the position tracking platform of the Ministry of Agriculture and telecom);
4) Report safety/location positively;
5) Initiate SOS function with one key.
At present, this system has been widely used in the marine industry in Zhejiang Province and Fujian Province.
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