Small sensitive quality and wide range dump bucket type rainfall sensor

Abstract

The invention discloses a tipping bucket type rainfall sensor with small sensing capacity and large range, which comprises a water outlet spout, a water diversion tank with water outlets at both ends, and a pair of tipping bucket components; The center line of the water outlet spout is symmetrically arranged at the bottom of the water distribution tank. The 0.1mm sensitive rainfall sensor of the present invention is composed of two pairs of single tipping buckets each equipped with precise weights to form branch parts, supported by the tipping bucket shaft, installed back to back in the jewel bearing branch on the support, and can rotate sensitively. Its structure is simple, small in size, integrated with the rain-bearing tube parts, installed with a single rod support, designed with a firm base, and buried deep underground. The surrounding area is tightened with steel wire ropes, and it can work normally under typhoons of level 8. It is easy to use, maintain and repair, and the drip test is simple and convenient with high precision. mm, and telemetry, real-time reporting, wide application.

Description

technical field [0001] The invention relates to a rain sensor, in particular to a tipping-bucket rain sensor with small sensing capacity and large range. Background technique [0002] Water is the source of life. [0003] Water falls from the sky. In order to grasp the temporal and spatial distribution of rainfall, a certain number of hydrological and meteorological observation station networks are deployed in relevant river basins around the world, and the rainfall is uniformly observed with international standard diameter rain gauge rainfall instruments. The measurement results are used for water conservancy and hydropower construction. Agricultural irrigation, water for people's livelihood, as well as flood prevention and drought resistance are of great significance to the development of the national economy and scientific research, especially today's abnormal weather and frequent floods and droughts. [0004] The rain gauge is an ancient, simple and reliable instrument ...

AI Technical Summary

Problems solved by technology

[0011] 2. The rainwater deposition error on the inner surface of the tipping bucket is to reduce the increment △W 中 The error, the installation angle of the tipping bucket is designed to be as small as possible, so the rainwater in the tipping bucket will not be poured cleanly, and the inner surface roughness, unevenness and water surface tension of the bucket filled with water will cause the rainwater to be absorbed and not clean; the instrument works in the field for a long time , with the passage of time, the surface of the metal tipping bucket is oxidized, oily, and rough, and dust and fine sand particles are easy to adhere to it. Therefore, the weight of the left and right tipping buckets used as standard weights has uncertainty

The measurement error is generally less than ±5%, and the verification is carried out under a certain rain intensity. Therefore, it is not easy to compare the measurement accuracy of foreign tipping bucket rain sensors. so

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