SU899014A1

SU899014A1 - Method of determining rain characteristics

Info

Publication number: SU899014A1
Application number: SU802922418A
Authority: SU
Inventors: Валерий Иванович Городничев
Original assignee: Всесоюзное Научно-Производственное Объединение По Механизации Орошения "Радуга"
Priority date: 1980-05-05
Filing date: 1980-05-05
Publication date: 1982-01-23

Description

II

Изобретение относитс к поливу сельскохоз йственных культур дождеванием и может быть использовано дл определени характеристик дожд при испытани х дождевальной техники с применением дождемеров интегрирующего типа.The invention relates to the irrigation of agricultural crops by sprinkling and can be used to determine the characteristics of rain when testing sprinkler technology using integrating type rain gauges.

Известен способ определени характеристик дожд , включающий полив орошаемой площади, разбивку ее на площадки измерени , расстановку на них дождемеров, определение времени регистрации, отбор дожд приемной площадью дождемеров и измерени сло осадков домд l3 .There is a known method for determining rain characteristics, including irrigating the irrigated area, dividing it into measurement sites, arranging rain gauges on them, determining the time of registration, selecting rain with the receiving area of rain gauges, and measuring the sediment layer l3.

Недостатком данного способа вл етс то, что не измер ютс динамические характеристики дожд (скорость падени капель).The disadvantage of this method is that the dynamic characteristics of rain (drop rate) are not measured.

Известен и другой способ определений характеристик дожд , преимуществеуно дождемерами интегрирующего типа , включающий полив орошаемой площади , разбивку ее на площадки измерени , расстановку на них домдемеров , определение времени регистрации , отбор дожд приемной площадь дождемеров и измерение характеристик дожд (интенсивности, ди метра и скорости падени капель) 21.Another method for determining rain characteristics is also known, mainly integrating type rain gauges, including irrigating irrigated area, dividing it into measurement sites, arranging house dedemers on them, determining recording time, selecting rain receiving area of rain gauges, and measuring rain characteristics (intensity, diameter and speed) drops) 21.

Последний из указанных выше способов вл етс более близким к описываемому изобретению.The last of the above methods is closer to the described invention.

Недостаток данного способа - низ10 ка точность и большое врем затраты дл определени характеристик дожд вследствие того, что при определении средних показателей характеристик дожд существенно сказываетts с непосто нство времени полива и характеристик дождп на площадках разбиени .The disadvantage of this method is low accuracy and long time costs for determining rain characteristics due to the fact that when determining average indicators of rain characteristics, there are significant problems with irrigation time inconvenience and rain characteristics at dividing sites.

Цель изобретени - повышение точности и уменьшение времени определе20 ни характеристик дожд .The purpose of the invention is to improve the accuracy and reduce the time to determine the characteristics of rain.

Claims

This is achieved by the fact that the time of registration and receiving areas of rain gauges are adjusted so that the ratio of the product of the registration time to the receiving area of rain gauges and the product of the area of the dividing area and the watering time of this area is constant. The rain characteristics of this method are carried out in the following sequence. The irrigation area is divided into measurement sites and rain gauges, for example, of the integrating type, are ground on them. Knowing the characteristics of the sprinkling machine, the speed of its movement and the irrigation area, determine the irrigation time of each dividing site and regulate the registration time and receiving areas of rain gauges so that the ratio of the work of registration to the receiving area of rain meters and the product of the dividing area by the irrigation time of this site is constant . After that, watering is performed and rain characteristics are measured with rain gauges, for example, the intensity and diameter of the droplets. Due to the fact that the above ratio is constant over the entire irrigation area, rain gauges are measured with close accuracy, and when determining the rain characteristics, the processing time is reduced, since the coefficients obtained in the known rain characteristics equations will be constant for each area of irrigated area. The invention of the method for determining rain characteristics, mainly integrating type rain gauges, including irrigating the irrigated area, dividing it into measurement sites, arranging rain gauges on them, determining the recording time, selecting rain for receiving rain gauges, and measuring the rain characteristics characterized by in order to increase the accuracy and reduce the time for determining the characteristics of rain, they regulate the time of registration and the receiving areas of the rain gauges so that the ratio of the product of the time of registration on the receiving area of the rain gauges and the product of the area of the division and the irrigation time of a given area is constant. Sources of information taken into account in the examination 1. Testing of agricultural equipment, machinery and equipment for sprinkling, program and test methods. Sectoral standard OST 70 II. 1-7, Soyuzselkhoztekhnika, 1977, p. .

2. Isaev A.P., Hydraulics of sprinkling machines. Mashgiz, 1973, p. 26-29.