1. Overview of Wireless Disaster Mitigation Early Warning System (Beijing Haite Weiye Technology Co., Ltd.)
In recent years, due to the combined influence of human activities and natural factors, the global climate has been warming year by year, large-scale irregular abnormal weather continues to emerge, and extreme weather events occur frequently, which has a major impact on social and economic development, the safety of people ’s lives and property. The destruction also directly threatens the ecological environment on which humans depend. The convening of the "Copenhagen World Climate Conference" confirms that governments and international institutions of all countries attach great importance to this, and dealing with complex and changing climate environment has become an important issue that concerns humanity and the world.
China has a vast territory, complex terrain, and obvious monsoon climate. The disasters caused by extreme weather and climate events are relatively frequent. Heavy rain, floods, drought, cold damage, freezing damage, cold damage, blizzard, hail, heavy fog, thunder, tornado, strong wind, heat wave, sandstorm , Dry and hot winds, continuous rain, tropical cyclones and other meteorological disasters occur from time to time. Especially in recent years, the weather has often been extreme, and meteorological disasters are characterized by many types, wide ranges, and high intensity. The annual losses caused by meteorological disasters account for about 70% of the entire natural disasters, and the direct economic losses account for about 3-6% of GDP. The use of scientific and technological means to prevent and mitigate disasters has become an important policy content for governments at all levels, water conservancy bureaus, meteorological units, radio and television bureaus, and flood control and drought relief offices.
Beijing Haite Weiye Technology Co., Ltd. took the lead in designing, developing and launching a wireless disaster reduction warning system based on a wireless mobile network covering the whole country. The system adopts international advanced INTERNET, cellular network bandwidth transmission, UTP / Gn access, embedded text-to-speech conversion, LED display control and other technologies, and is designed to release "wireless text-to-speech emergency broadcasting" and "wireless LED display". "Integrated wireless disaster reduction warning system. It can quickly, timely and accurately disseminate all kinds of information, especially meteorological disaster warning information to the public, expand the coverage of meteorological information, solve the "last mile" problem of meteorological information, improve meteorological disaster early warning capabilities, and achieve maximum disaster prevention and mitigation the goal of.
2. Features of wireless disaster reduction warning system
2.1 Wireless Disaster Mitigation Early Warning System Function Text-to-speech conversion: support meteorological and other information text-to-speech broadcast output.
LED display: support the weather and other information text to LED display.
Timed broadcasting: support automatic voice broadcasting and LED display of weather and other information.
Emergency broadcast: support manual sending information, emergency automatic voice broadcast and LED display.
Broadcast settings: support voice male / female voice selection, pitch and speech rate can be set as needed.
Display settings: Support LED display text scrolling speed setting.
Frequency setting: Supports voice broadcast and LED display information frequency setting.
Identity authentication: Support the identity lock and authentication of the sender of the information, illegal information will not be received and broadcast.
Status monitoring: It supports real-time monitoring of the sending status, and the software has a clear prompt for whether the information is sent successfully.
Peripheral control: Support the power amplifier automatic control function.
Multi-text: support GB2312, GBK, BIG5, UNICODE four internal code format text.
2.2 Features of Wireless Disaster Reduction Early Warning System Wide area coverage: The wireless mobile network has good coverage in cities and rural areas in 31 provinces across the country. Basically, wireless disaster reduction early warning systems can be transmitted where mobile phones can make calls.
Always online: As long as the system activates the wireless warning broadcast application, it will stay online all the time, similar to the wireless dedicated line network service.
Billing by volume: Although the wireless dedicated line network service remains always online, it is only billed when communication traffic is generated, and the cost is low.
High-speed transmission: Adopt the bandwidth transmission of the cellular network, which can support the peak transmission rate of 53.6Kbps. The transmission rate is high and the transmission speed is fast.
Real-time release: release and receive information at any time, and can display and broadcast regularly or immediately.
Unlimited expansion: nationwide, as long as the wireless GPRS network covers the place can be used, not limited by distance and location.
Easy installation: As long as there is a wireless mobile network, the terminal of the wireless disaster reduction early warning system can be powered on.
3. Composition of wireless disaster reduction warning system
3.1 Wireless Disaster Mitigation Early Warning System Release Platform Establish a wireless disaster mitigation early warning system release platform in provinces, cities, counties or towns to regularly / manually release various types of comprehensive information on meteorology, flood control, disaster, agriculture, science and technology, affairs, etc. Wireless air transmission over the air.
3.2 Wireless Disaster Reduction Early Warning System Receiving Terminal Set up a wireless disaster reduction early warning system receiving terminal in the district, town or village, scroll the displayed information LED text through the electronic display screen, and convert it into voice (male and female voices are optional). The horn (tweeter) is played. Real-time notification of weather and other information, so that farmers can take preventive measures.
Note: The speed and frequency of text scrolling, and the number of voice broadcasts of the tweeter can be set arbitrarily according to needs through the meteorological disaster warning and release platform.
4. Principles of Wireless Disaster Mitigation Early Warning System Meteorological services / technical information release staff, through the operation and use of a wireless disaster mitigation early warning system platform connected to the INTERNET network, integrate weather forecasting, pest and insect disasters, geological disasters, science and technology, agriculture, current policy and emergency Information such as the situation is released regularly or manually. The TCP / IP protocol is used to group, encapsulate and send the information data to the Internet for transmission, and then connect the Gn interface of the Internet backbone network to the GTP tunnel protocol of the wireless mobile communication network. The UPP / IP protocol is used as the bearer layer to reduce wireless disasters. The information of the early warning system is sent to the wireless mobile communication network.
The wireless mobile communication network has good coverage in cities and rural areas in 31 provinces across the country. Basically, wireless mobile communication networks exist where mobile phones can make calls. The information of the wireless disaster mitigation warning system will be transmitted through the wireless cellular broadband network transmission technology in the wireless mobile communication network.
The wireless disaster reduction warning system (also called wireless warning) terminal is based on wireless mobile communication network for data and voice communication, which can realize the conversion of CDMA / GSM / GPRS data, text, short messages, direct telephone dialing into analog voice signals and carry out Amplified input can convert CDMA / GSM / GPRS data, text, and short messages to LED real-time display. And the status of the received information can be reported to the wireless disaster reduction warning system platform.
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