Speed regulation rotary type precipitation particle standard device

Abstract

The invention discloses a speed regulation rotary type precipitation particle standard device. The speed regulation rotary type precipitation particle standard device comprises a precipitation particle simulation unit and a precipitation particle control unit. The precipitation particle simulation unit is composed of a set of precipitation particle patches, wherein the transmission property of the precipitation particle patches is same as the transmission property of real precipitation particles, and the stimulation precipitation particle patches are taken from images formed by raindrops of different sizes, snowflakes and hail of different shapes and the like. The precipitation particle control unit comprises a microcontroller, base platforms, supports, a rotating shaft arm, a stepping motor and a transparent disc, wherein the stepping motor drives the transparent disc to rotate around the rotating shaft arm, and the rotating shaft arm is supported by the supports. The precipitation particle simulation unit is fixed on the transparent disc and driven by the stepping motor to rotate at a certain adjustable speed, and the movement speed of precipitation particles is determined by the positions of the precipitation particles and the rotating speed of the transparent disc. By the adoption of the speed regulation rotary type precipitation particle standard device, shapes, dimensions and speed of the precipitation particles of different types can be stimulated and accurately controlled, and a reliable basis is provided for detecting the performance and the accuracy of an optical precipitation sensor.

Description

technical field [0001] The invention relates to a speed-regulating rotating precipitation particle standard device which can simulate the microphysical characteristics of real precipitation particles. A reference environment consistent with real precipitation. Background technique [0002] The description of precipitation phenomena in meteorology can be divided into two types: macroscopic quantity and microscopic quantity. Among them, precipitation amount, precipitation intensity, precipitation time and its temporal and spatial distribution belong to macroscopic quantity. The size, shape, speed, phase state and composition of precipitation particles , spectral distribution, etc. are microscopic quantities. Accurate observation of macroscopic and microscopic quantities of precipitation is of great significance for meteorological scientific research, monitoring and early warning of disastrous precipitation, artificial weather modification, soil erosion and landslides, etc. ...

AI Technical Summary

Problems solved by technology

However, it is difficult to evaluate the consistency and accuracy of various instruments for the measurement of precipitation microphysical characteristics, and there is an urgent need for precipitation particle standard devices that can simulate the microphysical characteristics of real precipitation particles such as shape, scale, velocity, and spectral distribution.

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