Utilization of water flow for powering the internet-based water metering system household scale

Purpose: analysis of existing ultrasonic methods and devices for metering water flow in irrigation and drainage systems. The problem of rational use of water resources exists in all areas, including agriculture. It cannot be resolved without considering the issue of water metering and water distribution. The main task of the water accounting system in irrigation and drainage systems is measuring the volume of water taken from the water intake and delovered to the irrigation network. For these purposes, flow meters – devices that measure the flow of water, are used. Ultrasonic (acoustic) flow meters are flow meters capable of solving complex problems in flow measurement. Currently, there are several measurement methods to determine the water flow rate at reclamation facilities: ultrasonic, radar, Doppler method, cross-correlation method and Transit-Time method. Based on these methods, a large number of modifications of devices for determining water flow rates have been created: level gauges, radar flow meters, Doppler flow meters, submersible cross-correlation flow meters, pulse-time flow meters. Conclusions. Flow meters based on level gauges and radar flow meters are impractical to use in commercial water metering units. They have high flow measurement errors, since level gauges measure only the level, and the speed is taken as a constant value, while radar flow meters measure the flow rate, but this is not the speed of the entire flow, but only of the surface layer. The flow rate measured by Doppler and cross-correlation meters depends on the amount of solids in the flow. But since the water in canals and closed pipelines on irrigation and drainage systems has a large number of solids, these flow meters have a high accuracy of flow measurement. Pulse time meters, as well as Doppler and cross-correlation meters, have high measurement accuracy, but do not depend on the amount of solids in the flow.

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ON ISSUE OF CALCULATION AND USE OF PARSHALL FLOW-METERING FLUME WITH MODERN WATER METERING DEVICES

Ecology and water management ◽

10.31774/2658-7890-2020-4-123-134 ◽

2020 ◽

Author(s):

L. V. Yuchenko ◽

◽

A. P. Vasilchenko ◽

Keyword(s):

Water Flow ◽

Flow Rate ◽

Water Flow Rate ◽

Maximum Flow ◽

Maximum Flow Rate ◽

Measured Parameter ◽

Measuring Device ◽

Flow Metering ◽

Measured Water ◽

Water Metering

Purpose: the use of a flow-metering flume and a modern metering device for water metering in an open canal with a flow rate of up to 1.5 cubic meters per second with the subsequent prospect of automating the measurement process. Materials and methods: the main function of the hydrometric structure – giving the fluid flow a given regime and pattern within a limited channel is theoretically used in the article. With the help of a hydrometric structure (Parshall flume) using the well-known “velocity-area” method, it is possible to determine the functional dependence of the water flow rate on one measured parameter, in this case on the level. With the use of modern sensors or devices for metering this parameter, it is easy in the future to automate the process of its metering, registration and transmission over a distance. Results and Discussion: the calculation of the maximum flow rate of the chute according to the selected empirical formula showed the correct selection and calculation of its parameters for the structure in accordance with a given maximum flow rate (up to 1.5 cubic meters per second), which does not require additional calibration of the chute during application. Conclusions: recently, more and more attention has been paid to the accuracy of used water metering in open irrigation canals with a low flow rate. With introduction of new modern devices that convert the measured parameter into the amount of measured water flow, the relevance of their use together with hydrometric devices increases. To measure water flow in an open canal, it is proposed to use Parshall flume with a modern measuring device, consisting of a submersible pressure sensor and a remote control and monitoring unit installed in a stilling well. The description of design and an example of clarifying the geometric dimensions of a flume with a measured water flow rate of up to 1.5 cubic meters per second is provided. The design diagrams of the flume and stilling well with the placement of a modern measuring device are presented.

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Displacement and Reinforcement Effects of the Internet and Other Media as Sources of Advertising Information

Journal of Advertising Research ◽

10.1017/s0021849904040073 ◽

2004 ◽

Vol 44 (1) ◽

pp. 126-142 ◽

Cited By ~ 26

Author(s):

JAMES C. TSAO ◽

STANLEY D. SIBLEY

Keyword(s):

The Internet ◽

Advertising Information

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Effect of verapamil on cytoplasmic distribution of granules and microfilaments in amphibian urinary bladder

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100103681 ◽

1988 ◽

Vol 46 ◽

pp. 324-325

Author(s):

A.J. Mia ◽

L.X. Oakford ◽

T. Yorio

Keyword(s):

Urinary Bladder ◽

Water Flow ◽

Morphological Changes ◽

Granular Cell ◽

Cytosolic Calcium ◽

Calcium Storage ◽

Amphibian Urinary Bladder ◽

Vesicular Membrane ◽

High Concentrations ◽

Cytoskeletal System

The amphibian urinary bladder has been used as a ‘model’ system for studies of the mechanism of action of antidiuretic hormone (ADH) in stimulating transepithelial water flow. The increase in water permeability is accompanied by morphological changes that include the stimulation of apical microvilli, mobilization of microtubules and microfilaments and vesicular membrane fusion events . It has been shown that alterations in the cytosolic calcium concentrations can inhibit ADH transmembrane water flow and induce alterations in the epithelial cell cytomorphology, including the cytoskeletal system . Recently, the subapical granules of the granular cell in the amphibian urinary bladder have been shown to contain high concentrations of calcium, and it was suggested that these cytoplasmic constituents may act as calcium storage sites for intracellular calcium homeostasis. The present study utilizes the calcium antagonist, verapamil, to examine the effect of calcium deprivation on the cytomorphological features of epithelial cells from amphibian urinary bladder, with particular emphasis on subapical granule and microfilament distribution.

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A hitchhiker’s guide to microscopy and microanalysis using telecommunications, e-mail, and the Internet

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100169687 ◽

1994 ◽

Vol 52 ◽

pp. 390-391 ◽

Cited By ~ 1

Author(s):

Nestor J. Zaluzec

Keyword(s):

The Internet ◽

Information Superhighway ◽

The World ◽

Exchange Information ◽

On Line ◽

Computer Based ◽

Software And Hardware ◽

Communication Software ◽

Basic Ideas ◽

E Mail

The Information SuperHighway, Email, The Internet, FTP, BBS, Modems, : all buzz words which are becoming more and more routine in our daily life. Confusing terminology? Hopefully it won't be in a few minutes, all you need is to have a handle on a few basic concepts and terms and you will be on-line with the rest of the "telecommunication experts". These terms all refer to some type or aspect of tools associated with a range of computer-based communication software and hardware. They are in fact far less complex than the instruments we use on a day to day basis as microscopist's and microanalyst's. The key is for each of us to know what each is and how to make use of the wealth of information which they can make available to us for the asking. Basically all of these items relate to mechanisms and protocols by which we as scientists can easily exchange information rapidly and efficiently to colleagues in the office down the hall, or half-way around the world using computers and various communications media. The purpose of this tutorial/paper is to outline and demonstrate the basic ideas of some of the major information systems available to all of us today. For the sake of simplicity we will break this presentation down into two distinct (but as we shall see later connected) areas: telecommunications over conventional phone lines, and telecommunications by computer networks. Live tutorial/demonstrations of both procedures will be presented in the Computer Workshop/Software Exchange during the course of the meeting.

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