Precipitation measurement method and device based on passive impulse method

Abstract

The invention discloses a precipitation measurement method and device based on a passive impulse method, and belongs to the technical field of precipitation measurement. The method comprises the steps: setting a semispherical cover which is fully provided with force sensors, wherein different rain drops fall on the semispherical cover, and because the semispherical cover has radian, the impulses brought by the rain drops at different positions are different; the impulses, which are measured by a force sensor, in a direction perpendicular to a falling point gradually decrease from the top of the sphere to the periphery, and when the falling direction of the rain drops is tangential to the semispherical cover, the rain drops cause no impulse to the semispherical cover, and at this moment, the tangential direction is the falling direction of rain drops. The method also comprises the steps: employing a panel which is fully provided with the force sensors for calculating the total impulse of the rain drops according to the vertical impulses measured by the force sensor after the falling direction of the rain drops is obtained; calculating the mass of rain drops according to the momentumconservation and impulse conservation, wherein the motion of rain drops is considered to be constant speed motion in default when the rain drops fall to the ground, and acquiring the precipitation through the density of rainfall. The method ingeniously achieves the acquisition of the real-time rainfall without storing the rainfall.

Description

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AI Technical Summary

Benefits of technology

This technology allows us to accurately detect when there are water on top or below by measuring its velocity with an ultrasonics device. It also has several technical benefits: 1) Unlike other methods like radioactive rays which require long periods before they start working properly; 2) By doing this we don't have any issues related to storage space limitations such as flooding caused by snow falling down from highways during winter months).

Problems solved by technology

Technological Problem addressed in this patents relates to current rain gage devices used on homes or offices, such as those with metal roofs and windows. These raingages have issues related to their reliability over time because they may get corroded easily leading to incorrect measurements even if stored away after being exposed to harsh weather conditions. Additionally, existing rain gaging instruments require frequent maintenance, making them difficult to maintain accurately. There also exist other types of rain gaugmetry based upon gravity flow (GF) principles where water flows from higher elevations towards lower ones). However these techniques suffer from various drawbacks including poor accuracy under different environments and potential damage to sensitive equipment like sensors.

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