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521
USING HUMAN-MACHINE INTERFACE IN AUTOMATION OF WATER
MANAGEMENT FACILITIES
Ubaydullayeva Dilorom Rahimovna,
Bukhara state technical university, Associate Professor of the Department of
“Technological Processes and Production Automation” at the University
of Candidate of Technical Sciences.
Abstract:
This research is devoted to the consideration of the reasons for using the human-
machine interface in the automation of water management, the problems and advantages of its
implementation. At the same time, the correct application of the human-machine interface for the
effective use of water management in the conditions of Uzbekistan is envisaged.
Keywords:
human-machine interface, automation, communication, screen, electricity
equipment, diagram.
Introduction.
Uzbekistan Republic geographical location and there is rivers from the number
come came out without water from the farm productive use of the day current blues in line it
stands. Scientists stating the next 10-20 years inside In Uzbekistan water shortage further high to
indicators output For these reasons, water farm correct organization to make, from it effective
use main to the goal around is going on. For this and this water facilities further effective to do
and thrift increase for modern from technologies use, process complete or partially automation
big importance has will be. The present of the day pump of stations only some partially
automated in the state of. Modern technologies stay to us this problems to solve help This is
developed countries in the example of our vision possible. Human car interface pump at the
stations stay to us this problems to solve and human labor efficiency further to increase big help
to give possible.
Materials and methods.
What does implementing a Human-Machine Interface (HMI) at pumping stations give us or what
are the challenges in implementing it?
With the help of the Human-Machine Interface, manually operated electrical equipment can be
controlled using a visual display. This allows you to easily control and monitor everything from
small switches to large complex processes. In this case, you can completely monitor, control, and
monitor the working process through a single display window. This eliminates the need for many
small switching devices and electrical equipment that pose a danger to humans. The Human-
Machine Interface is able to perform several actions at the same time. It consists of a display that
depicts the process in a graphical or schematic form, a keyboard for entering data, and buttons
for controlling the process.
Now let's look at the problems of supporting the human-machine interface. The very problem of
automating the work of a human operator encourages developers of automation tools to transfer
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as many functions as possible to technical systems. However, initially this desire was limited by
two factors:
1) relatively weak computing resources and high labor intensity and cost of implementing
automation systems;
2) the lack of adequate models of complex systems and means of verifying them. It was believed
that a person is not very reliable, but can act in situations where it is difficult to formalize it,
while automation is the opposite. This rule formed the basis of the principle of distribution of
functions, developed in the 1950s by Paul Fitts. This principle determines the assignment of each
function to the control entity that best performs this function. Based on this principle, tables were
created by various authors in the 1960s and 1970s, describing the qualities of a person and
automation in terms of various criteria [2], for example:
the level of complexity of the system, the level of uncertainty and the presence of
formalized management models;
the level of noise, interference and signals containing useful information; – the reliability
and recovery rate of man and machine;
resource characteristics and features of human and machine operation, multitasking
processes, overload capabilities, – performance and operating costs.
Surprisingly, almost none of the works of that period seriously discussed such a criterion as the
economic feasibility of automating a particular function. Over time, the situation with technical
means and design tools changed, significantly expanding the possibilities of automation.
Modern automated control systems for technological processes (TACS) can collect and deeply
process large amounts of data, which allows transferring part of the control and management
functions from a person to a machine. However, this leads to a decrease in the operator's
involvement in the control process, which has a negative effect when a person is required to
make complex and quick decisions. Being "loose", he takes time to assess the situation and
prepare a decision. Therefore, an increasing number of modern works are focused on
harmonizing the distribution of functions in order to constantly involve the operator in the
control process.
The problem of secondary activity and navigation HMI TJABT developers pay great attention to
mnemonics, their dynamics, the design of windows for entering control effects, the selection and
designation of colors and other important issues of data display. Much effort is spent on
algorithms for entering control effects to prevent incorrect or unexpected actions. As a rule, this
forces a person to perform additional operations to activate the control window, control virtual
buttons (and other dialog elements), confirm the action, close the window.
The problem of communication and the creation of a single information model is the use of
efficient devices, especially between local operators and employees of the blocked control panel
(BBSH) and the central control panel (MBSH). Another problem is the communication of BBSH
operators. The display control method provides completely individual information, but isolates
operators and does not allow communication using a common visual image. In this regard, the
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introduction of collective use screens (JFE) facilitates the work, but their necessity and content
are still being discussed. At the same time, JFE creates an additional "layer" of information
(from the point of view of a "multi-layered" interface [4]), the design of which should not be a
"beauty product", but the result of a deep analysis and part of the management concept.
The problem of virtualization of reality today has become an emotionally colored term with such
epithets as virtual reality modern, stylish, convenient, etc. at the same time, playing with various
objects (no matter what they are – mnemonic or in the form of a 3D image) using a computer, we
can feel about them sound, real size, heat, vibration. If traditional control keys retain tactile
sensations, have a volume, textured surface, require force to turn, then virtual organs and control
objects turn the operator's work into a computer game. And in such conditions, it is important for
the operator, including the main circulation pumps (AAN), to feel that he is controlling an object
the size of a five-story house. Of course, the path of any operator in BBSH is made through
"field" work, during which the real image of the equipment is forever fixed in memory.
Employees with special experience in this matter found the period of construction and
commissioning of this unit. However, due to simulators, the path to BBSH may be shortened and
the virtualization problem will become more acute.
Results.
To use IMI in the automation of a pumping station in a water utility, we need to perform the
following steps:
1.
Selecting the appropriate display, controller, sensors and actuators for the pumping
station based on functionality, reliability, ergonomics and cost requirements.
The Mitsubishi
FX3U-64m logic controller (Figure 1) can help us with this,
which has 32 inputs and 32 relay
outputs. Its contact rating 8A. This DIN relay installable logical module clamp finish to the
method has. His big memory space - consuming applications for It makes sense. module supply
power between 100VAC and 240VAC
GX developer is
a
MITSUBISHI ELECTRIC company.
by working PLC programming software supply, he ordered list (IL), ladder diagram (LD) and
sequential function ( SFC ) languages supports. Between IL and LD in the process of work
desired at the time transition possible. QnA / QnAS /System Q series ), and a wide on a scale use
possible was assistant programs there is.
2.
For IMI software supply working exit, this pump station between the operator and the
connection provides and technological parameters, events and settings signals, graphs and charts
shows. Software supply working on the way out and
IMI Samkoon sktool from the platform our
use possible this Samkoon IMI Company by working IMI software released supply,
it SK series
IMI modules for intended. Its IMI displays using setup, design to do and manage possible
3.
Display to the controller suitable interface connection and communication via ( e.g. RS-
485, Ethernet, USB, etc. ) parameters ( e.g. data
transmission speed, device address, etc. )
settings.
4.
Sensors and actuators mechanisms to the controller suitable input-output channels ( e.g.
analog, digital, relay, etc. ) to connect and measure and control parameters ( e.g., values interval,
work unloading stages, etc. ) setup.
5.
For IMI software supply to the display and controller loading and pumping station
different kind work modes ( e.g. manual, automatic, test, etc. ) work ability check.
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Figure 1.
Mitsubishi FX3U-64m logic controller
Conclusions.
My research through this we say maybe, Man-Machine interface in use
problems there is even if it is Uzbekistan under the circumstances application to us only
achievement to give The world is artificial. intellects creating one time we solve our problems in
solution smart technologies if we don't use again behind mold Let's go.
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