sms based remote controlling of home appliances may 2012 presented by: phuntsho gayenden ece2009064
TRANSCRIPT
SMS BASED REMOTE CONTROLLING OF HOME
APPLIANCESMay 2012
Presented by:Phuntsho Gayenden
ECE2009064
Phuntsho Gayenden ECE2009064
OUTLINE
• Overview• Aims and Objectives• Research Methodology• Literature Review• Implementation• Critical Analysis• Conclusion• Acknowledgement© Copy Right Reserved
Phuntsho Gayenden ECE2009064
OVERVIEW
Home Appliance
Control System
SMS
SMS based Remote
Controlling of Home
Appliances
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Phuntsho Gayenden ECE2009064
AIM AND OBJECTIVES
• Aim:– Investigating a method for remotely controlling of
home appliances to make life easier.• Objectives:– To know concepts of Home Appliance Control
System– To know concepts of Short Message Service– Investigating the combination of HACS and SMS– Investigation of security
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Phuntsho Gayenden ECE2009064
RESEARCH METHODOLOGY
• Investigation of related paper works• Study of components involved– Home Appliance Control System– SMS– GSM Modem
• Simulating the combination• Investigation of its feasibility
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Phuntsho Gayenden ECE2009064
LITERATURE REVIEW
1) Home Appliance Control System (HACS)
2) Short Message Service (SMS)
3) Global System for Mobile communication(GSM) Modem
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Phuntsho Gayenden ECE2009064
LITERATURE REVIEW
• Home Appliance Control System– One central computer– Physically connected appliances– Software based– Offers security
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Phuntsho Gayenden ECE2009064
LITERATURE REVIEW
• Short Message Service– Used to send text from one capable device to
another one.– Limited character length• 160 characters in Latin alphabet• 70 characters for other alphabets such as Chinese
– Very convenient– Uses GSM
Step 1: The SMS message is submitted to the service provider's SMS center (SMSC).
Step 2: The SMSC sends a request to the Home Location Register (HLR) and receives the routing information for the recipient.
Step 3: The message is forwarded to Mobile Switching Center (MSC).
Step 4: MSC collects recipients’ information from Visitor Location Register (VLR).
Step 5: MSC forwards the message to a Mobile Server.
Step 6: MSC returns the outcome of the operation to SMSC.
Step 7: SMSC reports the delivery status to the sender.
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Phuntsho Gayenden ECE2009064
LITERATURE REVIEW
• GSM Modem:– Allows the computer to use GSM services.– Connected to RS232 port• Serial to USB converter
can be used.
– Controlled by AT commands• AT stands for Attention
AT Commands Meaning
AT+CSCA="num" Set message centre number to "num"
AT+CGMI Get the name of manufacturer
AT+GMI Get the ID of manufacturer
AT+GMM Get the Model Information
AT+CPAS Get mobile phone activity status
AT+CSQ Get radio signal strength
AT+CMGS Send SMS messagesAT+CMGR Read SMS messages
AT+CMGD Delete SMS messages
AT+CMGF Operate in text mode
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Phuntsho Gayenden ECE2009064
IMPLEMENTATION
• Working:– User defined SMS syntax
• Example: Kinley abc123 Heater on– SMS is received by HACS from the GSM Modem– SMS is decoded to understand the command
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Phuntsho Gayenden ECE2009064
IMPLEMENTATION
• Simulation:
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Phuntsho Gayenden ECE2009064
CRITICAL ANALYSIS
• Simple• Secured• Easy Controls• Location Independent– Works as long as there is a mobile network
• Vulnerable to power failure• Setting up is time consuming
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Phuntsho Gayenden ECE2009064
CONCLUSION
• The methods are not hard to achieve.• It is a step to make our home smarter.
Wouldn’t it be convenient to turn on the AC and water geyser on the way back home from work?
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Phuntsho Gayenden ECE2009064
ACKNOWLEDGEMENT
• I would like to extend my deepest thanks to– Mr. Tashi• For guiding me in the completion of this seminar.
– CST IT Department and Library• For providing the research materials
– Mr. Rajen Biswa– Mr. Gopal Chandra Nepal
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Phuntsho Gayenden ECE2009064
THANK YOU
Any Questions?
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