0.5mm sensitivity double-skip-bucket type rainfall sensor

Abstract

The invention discloses a 0.5mm sensitivity double-skip-bucket type rainfall sensor. The bottom of a cylindrical rain container is provided with a base; the base of the rain container is provided with a lower water collector, a large skip bucket, an upper water collector, a small skip bucket and a funnel from bottom to top in turn; each water collector is arranged on a vertical plate; and an anti-blocking device is arranged above the funnel. The upper small skip bucket is designed to be a symmetric slope container, the lower large skip bucket is designed to be a labyrinthic container, the centers of gravity of a left bucket chamber and a right bucket chamber of each skip bucket are symmetric, and the skip bucket swings in a balanced way, so that stable performance is guaranteed during impact of heavy rains, and the sensor has high measuring accuracy. A hydrophobic layer has high flushing resistance and high surface hardness, and is environment-friendly and safe. Error is not influenced by raininess, and instant rainfall can be measured. Stable work and accurate measuring data of the rainfall sensor are guaranteed. Failed components can be easily approached during maintenance, and the failed components are easy to disassemble and replace, so that the manufacturing cost and the field maintenance cost are reduced.

Description

technical field [0001] The invention belongs to meteorological observation devices, in particular to a 0.5mm sensitive double tipping bucket type rain sensor. Background technique [0002] At present, the rainfall sensors produced at home and abroad mainly include tipping bucket type, siphon type, weighing type, double valve capacity type, double cylinder mutual overflow type and so on. Among them, the tipping bucket rain sensor is widely used because of its stable performance, unlimited rainfall measurement, strong reliability, good maintainability, low manufacturing cost, measurement error in line with meteorological observation requirements, and easy to collect and process output signals. However, in the work practice and comparative research, we found that there are still some deficiencies in the existing tipping bucket rain sensors at home and abroad. [0003] For example: the single tipping bucket rain sensor produced by Germany Thies company, due to structural design...

AI Technical Summary

Problems solved by technology

Although this design effectively solves the problem of measurement error caused by the loss of water from the tipping bucket, there are defects of water leakage and blockage caused by the installation of the valve device, which will still increase the measurement error of the sensor and even affect the reliability of the measurement results.

[0006] The working principle of the double-layer tipping bucket rain sensor produced by Japan Koshin Electric Industry Co., Ltd. is basically the same as that of the double-layer tipping bucket rain sensor produced by my country's Shanghai Meteorological Instrument Factory. An upper tipping bucket and a collection funnel are added to the upper layer of the metering tipping bucket, so that the rainwater intensity of the rainwater entering the metering tipping bucket is relatively uniform. Although this design overcomes the measurement error of the tipping bucket under different rain intensities, it can only reduce the rainfall within 4mm / min of rain intensity. Measurement, not suitable for rainfall measurement in areas with large changes in rain intensity and frequent heavy rainstorms, and under natural conditions, insects, fallen leaves, and sand and dust block the outlet holes to distort the indication or record

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