22-07-2014, 12:14 PM
Project Review on Water Level Sensing
Using PLC
[attachment=66108]
ABSTRACT
A PLC is a digital computer used to automate electromechanical processes. This research is
based on automation of a water tank by using Siemens PLC. Automatic control of water tanks
can work continuously and can provide accurate quantity of water in less time. In such process
there is no need of labor so there is no human error. Without human error, the quality of product
is better and the cost of production would definitely decrease with no error in quantity required.
Water level sensing can be implemented in industrial plants, commercial use and even at home
INTRODUCTION
A PLC or programmable logic controller is a digital computer used for automation of
electromechanical processes. It is used to convert the previously used “Relay Logic” or “Wired
Logic” for automation of an industrial process into Ladder Logic as done in PLC-Based
Monitoring Control System for Three-Phase Induction Motors in (Birbir.Y, Nogay, 2008) and
Automation Control in Painting Line of Steel Plant in (Hao.L, Ruilin.P, 2005). It is used to
automate respective processes but in this research Siemens LOGO is used which lie in the
cheapest category or entry level of PLC. The reason of it being cheap is that it has limited
number of input and output ports (I/O’s).
In this research automation of water tank is achieved by using inductive proximity sensors (type
PNP) in order to set a low level and high level inside the tank.
Proximity Sensors
Inductive proximity switches are used to detect metallic objects without physical contact with the
object. Their high-speed switching and compact size make them indispensable in automation
applications. Inductive proximity switches consist of a coil driven by an oscillator. The oscillator
develops an electromagnetic field which appears at the active face of the switch. When a metal
target enters this region, the electromagnetic field is reduced and the switch turns on or off. They
may even be used to count metallic objects, monitor the position of elements in a machine,
sensing the presence of metallic parts like screws and measure the rotational speed of axial
detecting cams
CONCLUSION
This prototype is specifically designed for the transfer of accurate amount of water desired in any
process or system that involves the measurement of a certain amount of water. The adaptability
in industry of our research is due to its automatic process. It is more probable that our research is
accepted due to ease of usability and very low cost
In today’s world industries can only grow by making themselves advance in technology and by
upgrading their machineries and plants. We have proposed an idea of making an automatic water
level plant which is normally manual in Pakistani industry
Using PLC
[attachment=66108]
ABSTRACT
A PLC is a digital computer used to automate electromechanical processes. This research is
based on automation of a water tank by using Siemens PLC. Automatic control of water tanks
can work continuously and can provide accurate quantity of water in less time. In such process
there is no need of labor so there is no human error. Without human error, the quality of product
is better and the cost of production would definitely decrease with no error in quantity required.
Water level sensing can be implemented in industrial plants, commercial use and even at home
INTRODUCTION
A PLC or programmable logic controller is a digital computer used for automation of
electromechanical processes. It is used to convert the previously used “Relay Logic” or “Wired
Logic” for automation of an industrial process into Ladder Logic as done in PLC-Based
Monitoring Control System for Three-Phase Induction Motors in (Birbir.Y, Nogay, 2008) and
Automation Control in Painting Line of Steel Plant in (Hao.L, Ruilin.P, 2005). It is used to
automate respective processes but in this research Siemens LOGO is used which lie in the
cheapest category or entry level of PLC. The reason of it being cheap is that it has limited
number of input and output ports (I/O’s).
In this research automation of water tank is achieved by using inductive proximity sensors (type
PNP) in order to set a low level and high level inside the tank.
Proximity Sensors
Inductive proximity switches are used to detect metallic objects without physical contact with the
object. Their high-speed switching and compact size make them indispensable in automation
applications. Inductive proximity switches consist of a coil driven by an oscillator. The oscillator
develops an electromagnetic field which appears at the active face of the switch. When a metal
target enters this region, the electromagnetic field is reduced and the switch turns on or off. They
may even be used to count metallic objects, monitor the position of elements in a machine,
sensing the presence of metallic parts like screws and measure the rotational speed of axial
detecting cams
CONCLUSION
This prototype is specifically designed for the transfer of accurate amount of water desired in any
process or system that involves the measurement of a certain amount of water. The adaptability
in industry of our research is due to its automatic process. It is more probable that our research is
accepted due to ease of usability and very low cost
In today’s world industries can only grow by making themselves advance in technology and by
upgrading their machineries and plants. We have proposed an idea of making an automatic water
level plant which is normally manual in Pakistani industry