ABSTRACT
A temperature monitoring system which can be used to monitor
the temperature of industrial processes has been designed and implemented in
the course of this project. This system relied upon a controller which is
connected to temperature sensors. The controller compares the actual
temperature to the desired control temperature, or set point, and provides an
output to a control element. Mostly the control element is a heater. The
controller is connected to a Personal Computer (PC) using RS232 protocol, so that
the current temperature can be seen on the PC. This system offers flexibility
to controlling operations by providing a user-interface from which the
temperature set-point can be easily changed. It is believed that this project
will remove rigorous and unnecessary monitoring and controlling activities and
hence ensure cheaper and faster product output.
CHAPTER ONE: INTRODUCTION
1.1 Background of the project
Cutix Plc Nnewi, a leading
manufacturer of indigenous cables, produces all kinds of cables ranging from
house wiring cables to aluminum and copper conductors for high tension
installation. Cutix was founded back in 1981, and started actual production in
1984. The company has many production machines which are highly durable and
rugged.
A production chart of Cutix Plc
Nnewi reveals that a finished product must have passed through the stages of
wire drawing, first and second insulation, spark testing and the finishing
(coiling and sealing) line. More critical of these is the first and second
insulation stages which make use of high temperature to melt polyvinyl chloride
(PVC) materials required for coating the cables. Such situation requires a
given temperature to be kept stable to ensure smooth and uniform insulation.
Cutix, like most other
manufacturing industries, makes use of analog temperature controllers. Such controllers
can accept thermocouple or RTD inputs and offer imprecise temperature control
over a range such as 75°C to 100°C. This seemed to pose no disadvantage to them
since their products still sell in the market. However, this type of
controllers used by these industry, unknowingly, possess no readable display,
lack of sophistication for more challenging control tasks, and no communication
ability, all of which most often expose the industry to the following problems:
•
non-uniform heating rate for a point
that requires more than one heating element, thus causing delay in start-up of
production.
•
wastage of raw of materials in
test-running the line to ensure that the temperature has reached the minimum
required value.
•
poor package outlook because the
sealers are not heated uniformly.
• extra
man-power for each extrusion line- one at the take-off and another at the
panel- to ensure that the machine is stopped immediately there is a sign of
poor quality due to failure of one or more of the heaters.
•
frequent damage of heating elements
as a result of no precision in control which often leads to over-heating the
elements beyond upper temperature range.
For more Electronic Engineering Projects Click here
================================================================Item Type: Project Material | Size: 103 pages | Chapters: 1-5
Format: MS Word | Delivery: Within 30Mins.
================================================================
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.