Transcript No Slide Title

Cell Phone-Based Remote Home Control System
Abstract
This project will enable users to remotely control their home appliances and systems using a
cell phone-based interface. To access the system, the user will send an authentication code
along with a desired command to the control unit using the short message service (SMS).
Upon authentication, the control unit will perform the desired command and return a status
message back to the user.
Introduction
Problem Statement
The objective of this project is to develop a system that allows the remote control of multiple
home appliances from a cell phone-based interface. This system will be a powerful and
flexible tool that will offer control and monitoring of appliances at any time and from
anywhere within the constraints of the technology in use. The target appliances include
climate control systems, and lights although many other appliances can also be controlled.
Operating Environment
Solution Development
Proposed Approach
Technologies Considered
•
•
•
•
• Cellular Networks: The widely available
networks are based on GSM.
• Communication protocols: DTMF, GPRS and
SMS.
• I/O interfaces between microcontroller and
devices: Serial or parallel I/O
Research technologies
Purchase or build components
Implement components into system
Test and evaluate system
Testing Considerations
•
•
•
•
•
•
•
•
Integrity of message string
Hardware/software interface
System response time
Power supply testing
Current detection circuit
User authentication
Correct status messages
Proper control device operations
Resources & Schedules
•The cellular phone will operate indoors or outdoors, wherever a cellular signal exists
•The control unit will operate indoors within the temperature and humidity limitations
required for the proper operation of the hardware
Personnel Efforts
Intended Users and Uses
Problem
Definition
Technology
Consideration
and Selection
EndProduct
Design
End-Product
Implementation
EndProduct
Testing
End-Product
Documentation
End-Product
Demonstration
Project
Reporting
Total
Hours
Labor
Cost
(10.30/hr)
Adam Mohling
6
13
5
50
25
25
10
56
190
$1,957
Chau Nguyen
5
18
5
35
35
20
10
50
178
$,1833
74
8
190
Uses
• Remotely controlling household
appliances such as: AC, lights, fans,
thermostats, etc.
Users
• Consumers who want to monitor and/or
control household appliances from a
remote location
Assumptions and Limitations
Assumptions
• Cellular phone and service provider
support text messaging service (SMS)
• All service charges from service provider
apply
• User and control unit can communicate
over a cellular phone network
Limitations
•The receiver must reside in a location
where a signal with sufficient strength can
be received from a cellular network
•Only electrically controllable appliances
will be possible targets for control
Issa Drame
6
28
5
35
30
15
10
55
184
$1,895
Arturo Palau
6
11
5
0
0
0
0
52
74
$762
Other Resources
0
0
0
0
8
0
0
0
8
$82
Total:
23
70
20
120
98
60
30
213
634
$6,530
Other Resources
Adam Mohling
Chau Nguyen
Issa Drame
184
Arturo Palau
Other Resources
178
Financial Resources
Item Description
Cost
Materials
$
STK300 Microcontroller
donated (Kanda)
GM28 Cellular Module
donated (Ericsson)
Labor
($10.30/hr)
$ 6,530.00
Total Cost
$ 6598.00
Misc. Components
$
65.00
Final Project Enclosure
$
3.00
Project Poster
$
0.00
Total Estimated Materials
$
68.00
68.00
Project Schedule
Expected End-Product
The end-product is a control unit that integrates the following components:
•Cellular receiver
•Microcontroller
•Controlled devices
Project Requirements
Design Objectives
Functional Requirements
•Set up communication between cell phone
and receiving device
•Set up communication between receiving
device and microcontroller
•Implement control circuit interface from
microcontroller to electrical appliances
•Receiver will connect to the cellular network.
•Receiver should authenticate user through cell
phone number and/or password
•Receiver will parse and interpret (ASCII) text
•Microcontroller in receiver will control the
electrical appliances through I/O interface
•Microcontroller should return status message
Design Constraints
Measurable Milestones
•Controlled appliances must be electrical.
•Functionalities of the controlled device
•Communication between cell phone and
receiver
•Battery and power converter ratings
•Capabilities of the microcontroller
•Hardware aspect of the receiver is interconnected
•Implement control circuit from microcontroller
to appliances
GM28 Cellular
Module
Cell Phone
Send status
Closing Summary
The extensive capabilities of this system are what make it so interesting. From the convenience of a simple cell
phone, a user is able to control and monitor virtually any electrical device in a household. This makes it
possible for users to rest assured that their belongings are secure, that the garage door is shut, and that the
television was not left running when they left the house.
Lamp
Thermostat
STK300
Microcontroller
Send completion
status
Send status
Appliances
•Perform required
instructions
Send message
•Send text message
•Receive status message
Project May06-13
Client
Website
Faculty Advisor
http://seniord.ece.iastate.edu/may0613/
Send message
•Communicate with
network
•Transfer data to
microcontroller
ISU Department of Electrical and Computer Engineering
Professor Ahmed E. Kamal
Issue
command
Fan
•Decode incoming message
•Send instruction to appliance
•Monitor completion status
Team Member :
Adam Mohling (CprE)
Issa Drame (EE)
[email protected]
[email protected]
Chau Nguyen (EE)
Arturo Palau (EE)
[email protected]
[email protected]
Garage Door