A method for obtaining accurate rainfall data based on equivalent rainfall intensity

Abstract

The present invention proposes a method for obtaining accurate rainfall data based on equivalent rain intensity, which is characterized in that, based on the tipping bucket rain sensor, it includes the following steps: Step S1: under the conditions of the test environment, different constant rain intensity values ​​are set , to test the tipping bucket rain sensor, and construct an equivalent rain intensity function according to the test results. Step S2: Obtain the instant rainfall function according to the equivalent rain intensity function. The present invention overturns the existing method of obtaining rainfall data through the tipping bucket rain sensor, and achieves the effect of breaking the routine with higher precision and smaller error, without modifying the main components of the conventional tipping bucket rain sensor In the case of changes, the collection of the time interval between two flips of the tipping bucket is introduced, combined with the characteristic attributes of the tipping bucket rain sensor, a new solution for obtaining accurate rainfall is constructed.

Description

technical field [0001] The invention relates to the field of meteorological data collection, in particular to a method for obtaining accurate rainfall data based on equivalent rain intensity. Background technique [0002] As an important meteorological data index, precipitation data has wide application and necessary significance. At present, the precipitation data is generally based on the total rainfall in a period of time, and the real-time precipitation data is collected mainly through devices such as rainfall sensors (rain gauges) and uploaded to the weather monitoring terminal for summary and statistics. The current mainstream rain sensor is the tipping bucket rain sensor. [0003] The tipping bucket rain sensor is a hydrological and meteorological instrument, which is used to measure natural rainfall, and at the same time convert the rainfall into digital information output in the form of a switch to meet the needs of information transmission, processing, recording a...

AI Technical Summary

Problems solved by technology

[0005] However, with the current higher and higher requirements for the accuracy of rainfall data, almost all the error correction schemes adopted may not be able to properly eliminate the influence of errors, and may even introduce new errors, such as the rainfall of double tipping buckets Although the sensor can eliminate the dynamic loss (because the rainfall is a continuous process, when the dumper on one side starts to turn over when it receives the rainwater and reaches the tipping bucket torque threshold, and the dumper on the other side starts to receive the rainwater, part of the rainwater is not received by the dumper. Incorporated into the measurement range of the tipping bucket rain sensor will cause loss of error), but the introduction of new random errors, or due to the limitation of processing accuracy, the elimination of errors cannot be achieved within the scope of cost and technical capabilities, and then Or the operation process of correcting the error is cumbersome, time-consuming and labor-intensive

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