Three-rainfall-sensor fusion system

Abstract

The invention discloses a three-rainfall-sensor fusion system, in rainfall fusion calculation, all values of variables related to rainfall are replaced by sensor output pulse numbers, and for a 0.1 mm rainfall sensor, the value of the variable in a fusion calculation formula is divided by 10 to obtain a rainfall element value. The method comprises the following steps: S1, preliminary calculation of a minute rainfall fusion value: calculating an initial value of minute rainfall fusion according to the mutual relation of current minute rainfall observation values of three rainfall sensors; S2, calculating differences between minute values and minute fusion initial values of the three rainfall sensors; S3, calculating accumulated rainfall deviations of the three rainfall sensors; S4, calculating a minute rainfall fusion value correction amount; S5, correcting the fusion value and the accumulated rainfall deviation value, wherein the value is B; S6, judging the state of the sensor; and S7, further correcting the corrected value by the environmental factor, wherein the value is A. Meanwhile, the workload of manual data processing and maintenance is reduced, and a good foundation is provided for ground meteorological observation service automation.

Description

technical field [0001] The invention relates to the field of precipitation data processing, more specifically, to a fusion system of three rainfall sensors. Background technique [0002] At present, there are two types of rain sensors used in surface meteorological observation operations: tipping bucket type and weighing type. [0003] The tipping bucket rain sensor consists of a water bearing (diameter is 20cm, area is 314cm 2 ) collected precipitation enters the upper tipping bucket through the funnel, when the rainfall accumulates to a certain amount, the upper tipping bucket is turned over due to the gravity of the precipitation itself, and the precipitation enters the collection funnel. When the precipitation is injected into the metering bucket from the throttle pipe of the collecting funnel, when the precipitation received by the metering bucket is 0.1mm, the metering bucket pours the precipitation into the counting bucket, so that the counting bucket turns over once...

AI Technical Summary

Problems solved by technology

[0004] Only one rain sensor collects precipitation. Once the instrument fails, is blocked, is struck by lightning, or is affected by the environment, the observation data is missing or abnormal, which affects the integrity of the data and cannot accurately obtain precipitation information.

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