This document describes a proposed system called the System Idle Application that automatically logs off a computer after a period of idleness. The objectives are to design an application that logs off when idle to save power as a green initiative. Currently, lab in-charges must manually check each system, which takes time. The proposed system would log off idle systems automatically without human involvement to more efficiently save power. It would use Java and track keyboard/mouse events to calculate idle time before logging off and notifying users.

1. System Idle Application

2. Abstract
• As current is a non-renewable energy, saving
current is an important factor in the 21st century.
• Saving of a non-renewable resource can be made
by decreasing it’s consumption.
• Any desktop consumes up to 250 watts, which is
a good count. Generally some careless students
DO not shutdown the systems in a lab while not
in use.
• Hence, in the process of reducing wastage of
power we came up with a model which will log
off the system automatically .
System Idle Application
System Idle Application

3. Objectives
System Idle Application
• To design an application that logs off automatically when
kept idle for a certain period of time.
• Main objective of our project is a Green initiative, so the
System automatically logs off if idle for a particular time.
• It is an autonomous project i.e. the System itself
implements the project without user’s involvement.

4. Existing system
• Every lab has an in-charge who must go to each and every
system to check whether the users logged off or not.
• It is a time taking process.
• At times few systems may be skipped by the in-charge.
System Idle Application

5. Proposed System
• The system will log off after a particular idle time and the
user will be intimated.
• High efficiency as there is no chance of skipping any
system.
• No man-power required and it’s a time saving process.
System Idle Application

6. Software Requirements
• Operating environment :
Windows operating system for development
and implementation.
• Requirements :
- Java Development Kit (JDK)
- Java Native Access (JNA)
System Idle Application

7. Hardware Requirements
• Processor : Pentium II or higher versions.
• RAM : 128 MB is recommended.
• Hard Disk : 20 GB
System Idle Application

8. Functional requirements
• Functional Requirements that the System
satisfies are:
1. The system initiates the command prompt
when a system is turned on .
2. The system gives the logged in details of the
system user.
3. The system calculates the status of the user
according to the time status of the user.
System Idle Application

9. Non-Functional requirements
• Non-functional Requirements that the system
satisfies are:
1. The screen layouts are very user friendly
2. The system uses keyboard and mouse
events for calculating the idle time
3. The system is successful in maintaining the
log details file
System Idle Application

10. UML Diagrams
System Idle Application

11. Class Diagram
System Idle Application
Win32IdleTime
kernel32
user32
cbsize
dwTime
GetTickCount()
GetLastInputInfo()
DateFormat
DateFormat : DateFormat
SimpleDateFormat()
Win32IdleTime$State
state.Online
state.Idle
state.Away
getIdleTimeMillisWin32()()

12. Component Diagram
System Idle Application

13. USE CASE Diagram Of User
System Idle Application

14. USE CASE Diagram of Administrator
System Idle Application

15. USE CASE Diagram of Machine
Power Attenuation System

16. Sequence Diagram
System Idle Application

17. Collaboration Diagram
System Idle Application

18. Activity Diagram
System Idle Application

19. SCREEN SHOTS
System Idle Application

20. Screen Requesting ID Number
System Idle Application

21. Screen Displaying User Online Status
System Idle Application

22. Screen Displaying User Away
Status
System Idle Application

23. Log Record file
System Idle Application

24. Conclusion
• Power Attenuation System is an initiative project for
reducing power wastage at college level in the
computer laboratories .
• This will help a lot for the in-charge to lessen their
burden of checking each and every system weather they
are shutdown properly or not.
System Idle Application

25. Thank you
System Idle Application