Home apparatus control frame
Sequence Diagram
To operate the HAC System, drug utilizationr needs to operate each home appliance all by direct contact or by a foreign control system. Sequence Diagram leave alone apologise the operation by a remote control system. To splice to the remote system, user needs computer embedded conference devices such as a cell phone, a PDA, or a laptop computer.
The Home appliance control system is controlled either by a cell phone or a by palm top or by a PC. They ar connected either through wireless application protocol (WAP), the Internet, or intranet. It controls various appliances such as a microwave, TV etc. The HACS system receives commands from remote devices that are manipulated by user. The system in turn dispatch commands to several(prenominal) appliances that will perform the actions. HACS is responsible for keeping track of the states of the devices. If something goes wrong, it will notify the user by sending messages back to the remote devices as well as emergency department if necessary.
The undermentioned picture gives an overview of how this system is going to work.
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1 Authentication
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issue of events:
1. after(prenominal) user connects the remote system, user needs to log on to the system using valid username and password.
A logon attempt shall particular to 3 times for security precaution.
2. After all use of the system, user shall log out the system and communication amid user and remote system is disconnected.
2 Operate TV
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Flow of events:
1. After user log onto the system, remote system asks HACS dominance a itemization of appliances.
2. User simply chooses the TV from the appliance list.
3. Remote system asks the command list of a TV.
4. HACS restrainer asks a TV a list of commands.
5. A store door returns the list of commands to the HACS controller then HACS controller returns the list to the remote system, then remote system displays the command list
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