10-03-2011, 02:33 PM
Presented by:
AMARESH
BAKKESH V KUBSAD
NARESHKUMAR K V
VINOD KUNCHANUR
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SMS Based Industrial Automation Using ARM Controller
Introduction
Automation plays an increasingly important role in the global economy and in daily experience.
In this day and age of computers, industrial automation is becoming increasingly important in the manufacturing process because computerized or robotic machines are capable of handling repetitive tasks quickly and efficiently.
OVERVIEW
ARM processor
GSM Architecture
AT commands
Transactions between GSM and ARM
Advantage , Disadvantage and Application
Conclusion
PROBLEM OCCURS BEFORE GOING TO THIS PROJECT
Availability Critical to Function
Fail-Safe Hardware
Non-Delayed Response
BLOCK DIAGRAM
Why we used ARM controller?
32 Bit Microcontroller
RISC
Pipelining
Von Neumann Architecture (Physical Memory up to 4GB)
Clock Frequency up to 50MHz
It has Two Instructions Set
Standard 32 Bit ARM Instructions Set
16 Bit THUMB Instruction Set
LPC2129 SPECIFICATION
16/32-bit ARM7TDMI-S and 64 pin package.
16 kB on-chip Static RAM.
128/256 kB on-chip Flash Program Memory.
128-bit wide interface for high speed operation.
Multiple serial interfaces: Two UARTs (16C550),
and Two SPIs
Temperature range is -40degree to +85 degree
GSM ARCHITECTURE
Network switching subsystem
Base station subsystem
Network management subsystem
AT COMMANDS
The "AT" or "at" prefix must be set at the beginning of each command line. When we enter AT and send that command to GSM modem it will give an acknowledgment by sending OK command
Components used
Transmitter section
GSM based Mobile Station
Receiver section
GSM modem
ARM controller
Relays
Stepper motor
LCD displays
DESIGN FLOW
Interaction between GSM and ARM
MAX232 logic standards
Logic 0 +3V to +25V
Logic 1 -3V to -25V
Basic register in UART operation
Pin descriptions
GENERAL PURPOSE INPUT OUTPUT (GPIO)
Direction control of individual bits
Separate control of output set and clear
All I/O default to inputs after reset
PORT0 and PORT1 are controlled by two groups of 4 registers such that IOPIN,IODIR,IOSET,IOSET
Interaction between ARM controller and LCD display
Interaction between ARM controller and load through relays
Functional diagram between ARM controller and stepper motor
Decision making
ALGORITHMS
ADVANTAGE & DISADVANTAGE
Advantages:
Safety of Control Personnel
Access by Multiple Users
User Friendly GUI
Fast effective & flawless service
High reliable and flexibility
Reducing cost
Disadvantages:
If network is busy the delivery of SMS may fail
More number of relay ports there will be always a delay in the response time of the system
APPLICATIONS
• Industrial control
• Medical systems
• Access control
• Point-of-sale
• Communication gateway
• Embedded soft modem
• general purpose applications
CONCLUSION
There are many alternatives for controlling devices individually but the proposed system is a multiple device control which really saves the time, energy and cost of the human being more reliable and effective.
Future Scope:
Feedback can be employed to the transmitter
We can prevent the using of unauthorization person
Wireless router and hub can be used to enable the connectivity of the Hardware