Small sensitive quality and wide range dump bucket type rainfall sensor

Abstract

The invention discloses a small sensitive quality and wide range dump bucket type rainfall sensor. The rainfall sensor comprises a water outlet nozzle, a sub-water tank with water outlets in both ends, and a pair of dump bucket assemblies. The shaft of the sub-water tank is arranged on the centerline of the bottom of the water outlet nozzle. The dump bucket assemblies are symmetrically arranged atthe bottom of the sub-water tank according to the centerline of the water outlet nozzle. According to the invention, the 0.1 mm sensitive quality rainfall sensor uses branch members composed of two pairs of single dump buckets with accurate weights, is supported by dump bucket shafts, is arranged on a jewel bearing branch on a bracket back to back, and can flexibly rotate; the rainfall sensor hasthe advantages of simple structure and small volume, is integrated with a rain tube member, and is supported and arranged with a single rod; a solid base is designed and is buried underground; the rainfall sensor is tightened by steel wire ropes around, can work normally under 8-level typhoon, and has the advantages of convenient use, maintenance, expansion and repair, simple and convenient driptest and high precision; and the rainfall sensor can be used as the basic data of regular rainfall in hydrology and meteorological departments, can be used for 0.2 and 0.5mm and telemetry, and has theadvantages of real-time flood report and 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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