INTRODUCTION
Industrial automation is the application of automation techniques
for the comfort and security of its parts.
In the present world of wireless technology every thing is going to be digital and wireless, and the cell phone is the key player in wireless technology today. Today the working is going on how to develop remote devices with out the presence of man and to reduce time and labor, and our project belongs to that race and by using it we can control any electronic devices through a cell phone, with one sms.
What is DTMF ? • Dual tone multiple frequency signaling (DTMF). • Multiple-frequency signaling consists of a combination of two tones with frequencies within the speech band. • Each combination of two frequencies representing a single digit. • The tones are in two groups : 1 Low Band 2 High Band
DTMF (Dual tone multiple frequency signaling)
Low HZ 697 HZ 770 HZ 852 HZ 941 HZ
High 1209 HZ 1336 HZ 1447 HZ 1633
1 4 7 * 2 5 8 0 3 6 9 # A B C D
MAIN BLOCKS OF INDUSTRIAL AUTOMATION
MICRO-CONTROLLER
GSM MODEM RELAY CIRCUITS
BLOCK DIAGRAM
Power Supply (5V)
LCD
Micro Controller
GSM Modem
Relay1 RELAY
Device
HT91 70B
Driver CKT
Relay2
Device
Relay3
Device
MICROCONTROLLER
Microcontroller is a small computer. Microcontroller consists of on-chip RAM, I/O Ports etc. ROM,
Microcontroller controls the electronic devices using the program that is provided to the controller.
A Single Chip
microcontroller
BLOCK DIAGRAM OF MICRO-CONTROLLER
PIN DIAGRAM OF MICRO-CONTROLLER
GSM MODEM
GSM (Global System for Mobile
communications) continues to assert
itself as the world's leading cellular communications technology. The GSM Modems can be used for setting up a kind of M2M
communication either using CALL or SMS services. This can be
effectively used for the automation of various homes, offices and
RELAY CIRCUITS
• A relay circuit is designed to control operation of electrical equipment. • Relays are used where it is
necessary to control a circuit by a
low-power signal (with complete electrical isolation between control
and controlled circuits), or where
several circuits must be controlled by one signal.
WORKING ?
GSM MODEM MICRO-CONTROLLER
RELAY 1
RELAY 2
RELAY 3
DEVICE 1
DEVICE 2
DEVICE 3
MOBILE
APPLICATIONS
Applications in industrial Electronic appliances Household Applications
Machines etc.
Can also be used for security purpose after modification
ADVANTAGES
Wireless technology.
It is cheaper
It uses low power Acknowledgement to the user to know the work is done or not.
CONCLUSION
The SMS from the master unit was successfully processed by mobile unit and sent to micro-controller through interfaces
and successfully controlled the electronic
devices connected to micro controller.
FUTURE SCOPE
To ensure proper maintenance of machines:
By using some extra devices we can check the status of machines whether they are working or not and also the part which is not working properly(sensors) .
• Enter the password.
• When the password has been incorrectly entered four times in a row, the interface an error sound is produced and the receiver replaced on-hook this function finds any attempt by 'hackers' to quickly try a large number of codes in a sequence. If password is correct enter in to the main menu . Main menu : Enter Command
* < 1 – 8 > * - operate one of the four relays 1 to 8. # < 1 – 8 > # - release one of the four relays 1 to 8. 123 – Read EPROM 456 – Change password 789 – Read relay status * 0 # - Line disconnected