1. SMS BASED REMOTE CONTROLLING OF HOME APPLIANCES May 2012 Presented by: Phuntsho Gayenden ECE2009064

2. OUTLINE Overview Aims and Objectives Research Methodology Literature Review Implementation Critical Analysis Conclusion Acknowledgement Phuntsho Gayenden ECE2009064© Copy Right Reserved

3. OVERVIEW Home Appliance Control System SMS SMS based Remote Controlling of Home Appliances Phuntsho Gayenden ECE2009064© Copy Right Reserved

4. 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 Phuntsho Gayenden ECE2009064© Copy Right Reserved

5. 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 Phuntsho Gayenden ECE2009064© Copy Right Reserved

6. LITERATURE REVIEW 1)Home Appliance Control System (HACS) 2)Short Message Service (SMS) 3)Global System for Mobile communication(GSM) Modem Phuntsho Gayenden ECE2009064© Copy Right Reserved

7. LITERATURE REVIEW Home Appliance Control System – One central computer – Physically connected appliances – Software based – Offers security Phuntsho Gayenden ECE2009064© Copy Right Reserved

8. 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 Phuntsho Gayenden ECE2009064 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. © Copy Right Reserved

9. 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 Phuntsho Gayenden ECE2009064 AT CommandsMeaning AT+CSCA="num"Set message centre number to "num" AT+CGMIGet the name of manufacturer AT+GMIGet the ID of manufacturer AT+GMMGet the Model Information AT+CPASGet mobile phone activity status AT+CSQGet radio signal strength AT+CMGSSend SMS messages AT+CMGRRead SMS messages AT+CMGDDelete SMS messages AT+CMGFOperate in text mode © Copy Right Reserved

10. 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 Phuntsho Gayenden ECE2009064© Copy Right Reserved

11. IMPLEMENTATION Simulation: Phuntsho Gayenden ECE2009064© Copy Right Reserved

12. 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 Phuntsho Gayenden ECE2009064© Copy Right Reserved

13. CONCLUSION The methods are not hard to achieve. It is a step to make our home smarter. Phuntsho Gayenden ECE2009064© Copy Right Reserved

14. 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 Phuntsho Gayenden ECE2009064© Copy Right Reserved

15. THANK YOU Phuntsho Gayenden ECE2009064 Any Questions? © Copy Right Reserved