SCADA for remote industrial plant

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SCADA for Remote Industrial Plant
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SCADA for Remote Industrial Plant
Introduction

• SCADA (Supervisory Control And Data Acquisition)
  for Remote Industrial Plant is designed for
  achieving and controlling the real time data
  remotely by the administration for large scale
  industries. Many processes are going on in the
  large scale industries where monitoring and
  controlling all the processes at a time is not
  possible manually . It is achieved by the
  adapting technology like SCADA.

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SCADA for Remote Industrial Plant
Block Diagram
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SCADA for Remote Industrial Plant
Hardware Components

• 8051 series Microcontroller
• ADC
• Temperature sensors
• Max232
• Relay Driver IC
• Crystal
• DB9 connector

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SCADA for Remote Industrial Plant
Hardware Components

• Resistors
• Capacitors
• Diodes
• Transformer
• Voltage Regulator
• Relays
• Transistors

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SCADA for Remote Industrial Plant
Software Components

• Keil compiler
• Language Embedded C or Assembly

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SCADA for Remote Industrial Plant
MAX 232

• MAX232 is an integrated circuit that converts
  signals from an RS-232 serial port to signal
  suitable for use in TTL compatible digital logic
  circuit.
• The MAX232 is a dual driver/receiver and
  typically converts the RX, TX, CTS and RTS
  signals.
• When a MAX232 IC receives a TTL level to convert,
  it changes a TTL logic 0 to between 3 and 15V.

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SCADA for Remote Industrial Plant
Microcontroller AT89S51/52

• AT 89S51 IC has an internal program that is easy
  to remove and re-programmed over and over -
  again.
• AT 89S51 IC is also used as modifiers for the
  thermal sensor temperature.

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SCADA for Remote Industrial Plant
Microcontroller Features

• It consist of 8K bytes of In- System Programmable
  (ISP) Flash Memory.
• Endurance 10,000 Write/Erase Cycles.
• 4.0 V to 5.5V operating range.
• Fully Static Operation 0Hz to 33MHz.
• Three 16 bit timer or counters.
• Eight Interrupt Sources.

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SCADA for Remote Industrial Plant
Voltage Regulators

• A voltage regulator is an electronic circuit
  which maintains the output voltage (almost)
  constant in spite of changes within some
  specified limits in the load current, input
  voltage, temperature, etc.
• An IC based voltage regulator can be classified
  in different ways. A common type of
  classification is 3 terminal voltage regulator
  and 5 or multi terminal voltage regulator.

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SCADA for Remote Industrial Plant
System Operation

• Temperature sensors are befittingly interfaced to
  the 8051 micro-controller which is in turn
  connected to a PC.
• On the front end, DAQ System (software) loaded
  in the computer which takes these values and
  displays them on its front panel, and also logs
  then in the database.
• One can set parameters like set point, low limit
  and high limits on the computer screen.
• When temperature of a sensor goes above the set
  point the micro-controller sends a command to the
  corresponding relay.

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SCADA for Remote Industrial Plant
System Operation

• The heaters are connected through relay contacts
  (corresponding to their sensors) are turned OFF.
• And are available for generating an AV alarm on
  the PC in the event of system failure.
• Hence, processes at hazardous area can be
  controlled accurately and better safety using
  Supervisory Control and Data Acquisition.
• Adapting such a technology will save both money
  and time.

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SCADA for Remote Industrial Plant
Working Principle

• For achieving the real time scenario for SCADA, a
  temperature logging system for a remote plant
  operation is taken.
• Here temperature sensors are interfaced to the
  8051 microcontroller with help of a 8 channel ADC
  device.
• Where the temperature sensors collect the data
  and send them to the microcontroller.
• The heaters (shown as lamps) are connected to
  relay contacts corresponding to their sensors
  which are controlled by the relay driver IC.

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SCADA for Remote Industrial Plant
Working Principle

• This system is interfaced to the PC using RS-232
  cable having a GUI for interactive actions by the
  operator.
• Whenever temperature of a sensor increases from
  set point of the GUI, the microcontroller sends a
  command to the corresponding relay.
• The relay is made to switch ON and OFF the heater
  (a lamp load) to maintain the set temperature.
• Hence, the high limit and low limit features are
  available for generating an AV alarm on the PC in
  the event of any abnormal situation.

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SCADA for Remote Industrial Plant
Working Principle

• At the front end, DAQ System software is loaded
  on the computer which takes sensor values.
• And display those values in front of the panel
  and also logs them in a database.
• The software has the provision for setting of the
  sensor parameters such as set point, low limit
  and high limit on the computer screen.
• Hence, in the large scale industrial plants
  control many processes with more accuracy and
  better safety using SCADA.

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SCADA for Remote Industrial Plant
Advantages

• Continuous monitoring of process
• Automation and protection
• Remote control and operation
• Real time control

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SCADA for Remote Industrial Plant
Applications

• A SCADA application has two elements
• The process or system that needs to be monitored
  and controlled.
• Devices you will use to perform monitoring and
  controlling functions.

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SCADA for Remote Industrial Plant
Conclusion
SCADA for Remote Industrial Plant circuit has
been designed and data from different analog
loads has been acquisitively and digitally
displayed on PC. Several loads have been
monitored on PC in real time. These systems are
used to monitor and control a plant and equipment
in industries. 
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