Mass-type rain gauge-based automatic calibration device and mass-type rain gauge-based automatic calibration method

Abstract

The invention relates to a mass-type rain gauge-based automatic calibration device and a mass-type rain gauge-based automatic calibration method. The mass-type rain gauge-based automatic calibration device adopts an integrated-distributed architecture, and comprises a console and a plurality of calibration terminal workbenches, wherein the console is in cascade connection with the plurality of calibration terminal workbenches, a regularly calibrated electronic balance is adopted to weigh mass of water in a water supply module in real time, the mass of water conveyed from the water supply module to a calibration container is calculated as a standard value of the mass; by using a pure water density reference table, a mass value of the water in the calibration container is converted into volume, and the volume is divided by area of a rain accepting mouth to obtain a standard value of rainfall; a peristaltic pump is used to fully convey the water in the calibration container to a calibrated rain gauge at a set flow rate; and the standard value of the rainfall is compared with an indicating value of the calibrated rain gauge to obtain a calibration / verification result. The mass-type rain gauge-based automatic calibration device disclosed by the invention has the technical effect of capability of realizing automatic measurement calibration on all kinds of rain gauges, has the comprehensive advantages of good performance, high efficiency and low cost, and has a very broad application prospect.

Description

technical field [0001] The invention relates to an automatic verification device for a rain gauge, in particular to an automatic verification device and a verification method for a mass-based rain gauge. Background technique [0002] Rainfall is one of the main items of meteorological observation. At present, the rain gauges used in grass-roots meteorological stations in my country mainly include cylinder rain gauges, siphon rain gauges, tipping bucket rain gauges, and weighing rain gauges, among which tipping bucket rain gauges are the most widely used. Restricted by observation methods, external factors such as rainwater splashing, evaporation, and wind blowing can easily cause deviations in rainfall observation results. Common errors such as horizontal error and induction measurement error, so periodic verification of rain gauge is required to ensure the accuracy of its measurement results. [0003] At present, my country mainly adopts the "capacity" type measurement gu...

AI Technical Summary

Problems solved by technology

The traditional capacity ball rain gauge verification device has the advantages of simple structure, long-term stability, and low cost, but there are also problems such as large manual operation errors, low work efficiency, poor sturdiness, single function, and unstable rain intensity.

Aiming at the deficiency of the capacity ball rain gauge verification device, the domestic meteorological metrology technical institutions generally adopt the liquid feeder type rain gauge verification device with a high degree of automation, but in the actual use process, there are also many problems: First, single liquid addition The full scale is only 50mL, and there is a problem of volume error accumulation in the verification; second, because the liquid addition is discontinuous, repeated water injection operations are required, which limits the working efficiency of the device to a certain extent; third, there are few institutions with corresponding verification / calibration capabilities , the traceability cost is high and the cycle is long; fourth, limited by technical principles, the source of error is more complicated, it is difficult to establish effective technical verification means, and the basic work such as the establishment and maintenance of standard devices is technically difficult and the workload is heavy

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