Magnetostrictive rain gauge and rain sensing method

Abstract

The invention discloses a magnetostrictive measuring cylinder type rain gauge and a measuring method, and belongs to rainfall measuring instruments. A rain bearing opening with the sectional area of 314.16 cm <2> is used for bearing rainfall; a water storage bottle, a metering measuring cylinder and a bottom cylinder of the artificial rain gauge are combined into a rain measuring cylinder with thesame diameter, a magnetostriction sensor, an electric drainage device and an acquisition controller are arranged on the rain measuring cylinder, automatic observation and drainage of rainfall are achieved, the resolution of the instrument reaches 0.1-0.01 mm, and the rain intensity range is expanded to (0-30 mm) / min. Furthermore, the sectional area of the rain measuring cylinder is reduced to 314.16 cm <2> / n, so that the resolution of the instrument can be improved by n times; a rain sensing switch is additionally arranged, so that energy can be effectively saved, and rainfall start-stop timecan be accurately measured; a permanent magnet floater is improved into a three-dimensional guide type floating disc, so that a measurement blind area can be reduced, and the sensitivity and stability of an instrument are improved. The instrument is superior to the existing instrument in the aspects of rain intensity range, resolution, accuracy, stability, reliability, atrocious climate environment adaptability, installation and debugging and the like.

Description

technical field [0001] The invention relates to a rain gauge and a rain sensing method, in particular to a magnetostrictive rain gauge and a rain sensing method, belonging to rainfall measuring instruments. Background technique [0002] At present, the observation instruments that people use for rainfall include: artificial observation rain gauge, tipping bucket rain gauge, siphon rain gauge, weighing rain gauge and digital float rain gauge; , There are differences in working principles, and each has its own advantages and disadvantages in terms of technical performance. [0003] ①Manual observation type rain gauge includes: Φ200 inner diameter rain receiving port, capacity 200ml-2500ml water storage bottle, simple structure, low manufacturing cost, high measurement reliability, large volume (60mm-80mm), applicable rain intensity range ≤30mm / min. Its disadvantage is that it has no telecommunication output, cannot be used for telemetry, and the labor cost of artificial obs...

AI Technical Summary

Problems solved by technology

The structure is complex, the cost is high, the load cell has nonlinearity and temperature drift, and the reliability is poor, so it has not been widely used

[0007] ⑤The digital float rain gauge is an upgraded version of the float mechanical siphon rain gauge. iron, acquisition controller and other equipment to realize the automatic observation of precipitation and precipitation process; the water level sensor of the float cylinder is a rotary encoder, and must be equipped with a measuring wheel, measuring cable, float and counterweight, and its structure is complex; the rotary encoder There is rotational friction, the measurement sensitivity is restricted, the float cable and weight are suspended on the measuring wheel, the cable may be disconnected, and its working reliability is low

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