The wireless weather information collection system mainly transmits the real-time monitoring information of each remote meteorological station to the local meteorological centers and provincial meteorological centers in real time through the advanced GPRS network. For timely and effective analysis.
The network design of the GPRS meteorological information collection system adopts a star-shaped structure in the center of the provincial bureau, land, and state.
Municipal meteorological bureaus and weather stations each set up core nodes. Among them, the provincial bureau as the core of the whole network, related to the normal transmission of the province's meteorological data, so the establishment of two core servers in the provincial bureau center, one host and one preparation. It mainly considers that the backbone network carries important functions for meteorological data and exchanges with other important government departments. Meteorological basic data is the basis for decision-making and law enforcement of many other government departments. Therefore, network equipment needs to be reliable and stable. In addition, considering the network It can also be used to carry the requirements of meteorological OA system, so the center equipment can guarantee the advanced and extensible network in the next few years. For example, the bandwidth to different cities in the future can be extended to 2 2M or more. In this case, you only need to upgrade through dedicated lines.
The municipal level uses the communication network system of the Provincial Meteorological Center through the optical fiber cable 2M, and fully considers the security and reliability of the network design. In this design, apart from the selection of the APN dedicated line as the primary use, the node between the PMC and each collection site also uses the ADSL/ISDN network as the backup link.
The collection points are accessed using GPRS DTU equipment. The collected meteorological data is sent to the city-level meteorological center through the GPRS network in a timely manner to achieve fast, stable, and reliable network construction.