Android Power Management & Ways to reduce the Power Consumption in an Android Smartphone

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1 ISSN Android Power Management & Ways to reduce the Power Consumption in an Android Smartphone #1 Shailendra Kumar Pandey, #2 Varsha Shinde, #3 Rani Magar #4 Prof. Gunjun K. Naigaonkar 1 pandey_shailendra.ghrcempcse@raisoni.net 2 varshashinde9923@gmail.com 3 magarrani8@gmail.com 4 gunjun.naigaonkar@gmail.com #123 B.E. Student, Department of Computer Engineering #4 Assistant Professor, Department of Computer Engineering Savitribai Phule Pune University G.H. Raisoni College of Engineering & Management, Wagholi, Pune , Maharashtra, India ABSTRACT The Android operating system is turning the wireless communications and Smartphone world on its top by providing complex features, various functionality and open source architecture that threatens to spaced out away everything else on the market. As many of the functionality available on Android devices are sucking up the power in batteries which decreases the wireless functionality of the Android Smartphone. Thus, the application pro-actively & intelligently manages the energy in the Android Smartphone s battery. These can be achieved by our suggested Android Application which analyses the huge percentages of power consumption apps & provide its solution by showing user the alarm/notifications, managing brightness according to the value set by the user while launching the application for the first time. Also, it may take action to kill/ avoid the launch of application as stated by user. When battery level reaches to a critical point, only messages and calls facilities are provided to the user. Thus these are power-saving options present by which user can save their Battery Life. ARTICLE INFO Article History Received: 20 th May 2016 Received in revised form : 20 th May 2016 Accepted: 23 rd May 2016 Published online : 24 th May 2016 Keywords: Android Operating System, Background Apps, Battery Life, Notifications, Open Source, Power Management. I. INTRODUCTION The Android operating system is changing the smartphone system and wireless communications world by offering open source, free apps and a detailed open architecture that kick away everything else on the market. With the agile development of Android phones, the requirements are increasing as per user demands. But the huge power consumption has adverse effect on User s communication demands. However, many of the features available on Android Smartphone can cause batteries to burn out very quickly. So, users of Android devices must actively & intelligently manage the energy in their batteries. There are power-saving options present in the Android Power Management app by which you can use to save your Battery Life. Earlier the phones were running for long duration which is having limited functionality. These phones were controlled by micro controller. But due to advancement in technology developers started working upon phones and developed in such a way that it should work as a mini computer i.e. Smartphone. Now these Smartphone is controlled by a Micro Processors which are programmed as per requirements. Micro Processors have power to process lots of different operations. But to run that Micro Processors the power required is more than Micro Controllers. Many Smartphones are available in market but Android Smartphone is the choices of majority of customers. The reasons are due to Good UI and User Friendly. 2015, IERJ All Rights Reserved Page 1

2 Users of Android are unaware of many Apps running in background which are consuming Battery continuously. As a result, Android Smartphones are charged frequently. II. PROPOSED SYSTEM Android Smartphone are loaded with highly complex functionalities. But these functionalities are going transparent in view of Android Smartphone users. Apps running in background is hard to detect by normal Android user. The Android Power Management Application detects these background Apps and services. As a result enhances the power or the battery Life. The various features of Android Power Management app. Detecting the greedy Apps:- III. METHODS AND MATERIALS Smartphone Operating System Analyses:- The Android is consuming largest Power among all Operating System. But still it s the highest used operating system in Smartphone. As we can observe from graph Android Operating System is % which is Highest Percentage among all Mobile operating system. The reason for the popularity of Android Smartphone is Open Source. Easy to develop Apps. Very interactive User Interface. The Android Power Management app checks the installed android apps of phone which consumes the power. Stopping the launch of Apps:- The Android Power Management app stops the launch of the other application running when it reaches the that battery percentage value which is entered by the user in Android Power Management app. When Android Power Management app is running, If user wants to launch the apps, then during launch of application, a selection screen will appear which gives you warning not to start the application and provides you option to Kill or Launch the requested app. Gives Notification Alarm:- The Android Power Management app provides a splash screen of Notification Alarm when Android Smartphone user wants to launch the application during below battery percentage value which is entered by the user. A warning screen will appear which provides you option to Kill or Launch the requested application. Screen Brightness Control:- The Android Power Management app controls the brightness of the Android Smartphone screen when it reaches that battery percentage value which is entered by the user. At that time, the brightness of the screen will decrease according to decrease in Battery Percentage Value of the Android Smartphone. The Critical Point:- The Critical Point is the point when the Battery Percentage value is very low. The Android Power Management app provides Critical Point facilities that kill the all apps running during that time except Call and Messaging Facilities. Critical Point is by default and can t set by the user in the Android Power Management app. If user wants to launch the apps, then the launch of apps is also terminated. Power is a very important resource to a Smartphone. By these functions of Android Power Management app, the battery life is increased of Android Smartphones. Fig 1. Graph of Smartphone Operating System The Android Smartphone Power Management:- A wake lock is a mechanism to application that indicates the device stay ON. Class - PowerManager.WakeLock The class is responsible for all Power Resources Management [1]. Device power life will be largely affected by the use of the application program interface. You can obtain an instance of the class by calling Context.getSystemService(). The primary application program interface you'll use is newwakelock(). It will create a Power Manager. WakeLock object. Then use methods on the wake lock object to manage the power state of the Smartphone. Android requires that apps & services ask CPU resources with the native Linux libraries i.e. "wake locks" & Android application framework. When no active wake locks, Android Device will shut down the CPU. acquire() is a function to allocate resources to Running App. release() is a function to de allocate resources of Running App. 2015, IERJ All Rights Reserved Page 2

3 As observe from the Figure 3, the flow of Android Power Management application working. System Architecture of Android Power Management App:- Fig 2. System Architecture of Android Power Management Dense straight line elements represent blocks of Android. Dashed lines elements represent blocks of partner-specific proprietary. Wake Locks Wake locks are used by apps and services to request CPU resources. The Power Management Software Models:- Power for wireless devices is a very important resource as well as constrain for devices. As we know that to increase power capacity, we need to increase size of Battery. On the other hand, we customers want slim Smartphones. Thus, need to find some software ways to overcome the problem of draining of battery quickly. IV. ANALYSIS MODELS Fig 4. System Architecture of Android Power Management app From Figure 4, we can observe from System Architecture, the Android Power Management app checks Battery Percentage Value. If current battery percentage value is below than user entered value than kill Background Apps. If current battery percentage value is above than user entered value than default services for Apps are executing in the Android Smartphone. Graph of Android Power Management App Analysis :- 4.1 Flow of Android Power Management App:- Fig 3. Flow Diagram of Android Power Management app Fig 5.Graph of Android Power Management app In Figure 5,Thin Dark Line represents the power consumed by Smartphone when the Android Power Management app is not running. 2015, IERJ All Rights Reserved Page 3

4 Thick Dark Line represents the power consumed by Smartphone when the Android Power Management app is running. As we can observe from graph, the power consumed by the running Android Power Management app is very less as compared to not running Android Power Management app. V. OUTPUTS 01. Android Power Management 04. Settings of Android Power Management App 02. Setting of User Battery Percentage Value of Android Power Management app 05. Critical Running Status of Android Power Management App 03. Setting of Screen Brightness of Android Power Management App 2015, IERJ All Rights Reserved Page 4

5 06. Below Running Status of Android Power Management App REFERENCES [1]shttp://developer.android.com/reference/android/os/Power Manager.html [2]shttp://source.android.com/devices/tech/power.htm [3] [4]An Analysis of Power Consumption in a Smartphone, Carroll NICTA & University of New South Wales, Gernot Heiser NICTA, Open Kernel Labs & University o 07. Information of Android Power Management App VI. CONCLUSION Thus we have successfully implemented Android Power Management & Ways to reduce the Power Consumption in Android Smartphone. VII. FUTHER WORK Thus, Android Power Analysis and Management is a way to use different complex Android apps for longer duration without power charging. Hence, more Android power consumption monitoring software models should be developed as power is a resource for an Android Smartphone. 2015, IERJ All Rights Reserved Page 5