Rainfall monitoring network and method using fiber grating siphon rain gauge

Abstract

The invention provides a rainfall monitoring network and a rainfall monitoring method through utilization of a fiber bragg grating hydrocone type rain gauge. The monitoring network includes a rain gauge array (18) and a signal generation and demodulation unit (19) which is connected with the rain gauge array (18) through an optical fiber coupler array (15). The rain gauge array (18) comprises a plurality of rain gauges (16) with internally arranged fiber bragg gratings (5), and the rain gauges (16) are connected through optical fibers (17). The rainfall monitoring network can monitor rainfall capacity of multiple spots in real time, and has the advantages of being high in measuring precision, strong in anti-jamming capability, capable of achieving automatic monitoring and free of remote power supply, and has great significance in hydrologic meteorological monitoring.

Description

technical field [0001] The present invention relates to a rain gauge for measuring rainfall, in particular to a method of measuring rainfall using fiber grating sensing, and at the same time, it relates to the correction of rain gauge measurement errors and the improvement of measurement accuracy, as well as specific implementation methods for rain gauge networked measurement . Background technique [0002] A rain gauge is an instrument used by meteorologists and hydrologists to measure the amount of precipitation in an area over a period of time. At present, siphon rain gauges and tipping bucket rain gauges are more common rain gauges, and there are also partial pressure rain gauges, optical rain gauges, and capacitive rain gauges. The siphon rain gauge measures the rainfall by measuring the height change of the float in the float type and the number of siphons, and the tipping bucket rain gauge realizes the statistics of rainfall by recording the preset value of the tippi...

AI Technical Summary

Problems solved by technology

[0007] The task of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a rain monitoring network and method using a fiber grating siphon rain gauge. The present invention has high measurement accuracy and can solve the problem of measurement blind spots caused by floating floats when there is not enough rainwater , correct the error when rainfall and drainage are carried out simultaneously, can realize quasi-distributed monitoring, can work continuously in the field for a long time, and realize automatic measurement and digital output

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