As a large country with a population of 1.4 billion, China’s agricultural production is our foundation, and climate change is a key factor affecting agricultural production. Meteorological observation and forecasting play an important guiding role in agricultural production.

　　At first, our meteorological observations were mainly based on manual observation and recording, and the accuracy and real-time nature of the data were difficult to guarantee. With the progress of modern information technology and the development of related instrumentation, meteorological monitoring has also begun to develop in the direction of automation, digitization and intelligence.

　　Meteorological monitoring instruments include many, such as: air temperature measuring instruments, air temperature measuring instruments, air pressure measuring instruments, wind direction and wind speed measuring instruments, precipitation measuring instruments and visibility measuring instruments. The basis for the realization of automated meteorological observation lies in the development of sensors and the application of data acquisition systems in instrumentation.

　　Taking precipitation measurement as an example, the commonly used precipitation measuring instruments are mainly siphon rain gauge and tipping bucket rain gauge. Although the traditional equipment also has an automatic recording function, it still needs to replace the recording paper regularly, and it cannot be separated from manual operation. The automatic siphon rain gauge uses a pressure sensor instead of a fuzi device to measure the margin, and a data acquisition system replaces manual operation, completing the automatic measurement and digitization of the measurement results.

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