Precipitation measurement method and measurement 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

technical field [0001] The invention belongs to the technical field of precipitation measurement, and in particular relates to a precipitation measurement method and a measurement device based on a passive impulse method. Background technique [0002] At present, traditional rain gauges at home and abroad mainly adopt four forms: one is a rain gauge composed of a leaky iron sheet rain receiver and a glass measuring cylinder. This kind of rain gauge is greatly affected by human beings and is prone to data errors. In addition, the rain catcher is made of iron, which is easy to rust, has a limited service life, and needs to be replaced frequently; the second is that the funnel-type rain catcher is connected to a plastic conduit to introduce rainwater into the room, and then measure the rainfall. Plastic pipes are prone to rupture due to long-term exposure to the sun, causing rainwater to overflow, and the rain gauge is made of glass, which is easy to be damaged; the third is th...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing precipitation measurement method needs to store and weigh the precipitation, and the error of the rain gauge measurement method is large, and the raindrops are easy to stick to the surface of the instrument. A passive impulse method precipitation measurement method and measurement method are provided. device

Images