Rainfall measuring system based on rainwater knock recognition and measuring method thereof

Abstract

The invention discloses a rainfall measuring system based on rainwater knock recognition. The rainfall measuring system is composed of a rainfall measuring meter, a host and an upper computer jointly.The rainfall measuring meter recognizes the rainfall through a rainwater knock, and the rainfall measuring meter comprises a metal hollow sphere made by machining a metal sheet, and a wireless microphone arranged at the sphere center of the hollow sphere and used for collecting a sound signal generated when rainwater knocks the surface of the hollow sphere. The wireless microphone is connected with a radio signal of the host. The host enables the sound signal sent by the wireless microphone to generate an mp3 file to be preserved and uploads the generated file to the upper computer. The uppercomputer conducts de-noise processing on the received sound signal and achieves rainfall measuring based on a rain sound signal by combining BP neural network training. A measuring method of the rainfall measuring system based on rainwater knock recognition comprises the steps of collecting of target sound signals, de-noise processing of the target sound signals, extracting of feature parametersof the rain sound signal, and BP neural network training and recognizing.

Description

technical field [0001] The invention relates to the measurement technology of meteorological observation instruments, in particular to a rainfall measurement system based on rainwater percussion sound recognition and a measurement method thereof. Background technique [0002] Precipitation is an important part of the earth's water cycle and an important part of water resource utilization. The measurement of precipitation depends on the measurement method and measurement accuracy of the rain gauge. The research on different rain gauges is an important part of the meteorological observation research. The convenient and accurate rainfall measurement method is still the constant pursuit of the meteorological industry. At present, the common rain gauges in the domestic market mainly include tipping bucket type, siphon type and weighing type. Most of the current rain gauges still use mechanical methods to measure rainfall, and the installation and detection methods are still relat...

AI Technical Summary

Problems solved by technology

At present, the common rain gauges in the domestic market mainly include tipping bucket type, siphon type and weighing type. Most of the current rain gauges still use mechanical methods to measure rainfall, and the installation and detection methods are still relatively complicated and limited. Intelligent rainfall detection The method has not yet been popularized in our country

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