AOA(android open accessory) that can control all external device

1. CONTROLLING AND MONITORING
EXTERNAL EMBEDDED DEVICE USING
ANDROID FRAMWORKS
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2.  Presented by
Dhruvilkumar Patel
Dhruvilkumarpatel@gmail.com
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3. OUTLINE
 Introduction
 Function of usb
 USB
 Introduction to AOA
 Paper 1
 Paper 2
 Paper 3
 Paper 4
 Paper 5
 Problems
 Proposed System
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4. INTRODUCTION
 What is AOA??
(ANDROID OPEN ACCESSORY)
 Simple USB protocol for communication between
peripherals and Android devices
 Accessory is the host, Android is the device
 Bi-directional communication over two bulk
endpoints
 Protocol for associating Android applications with
the hardware they support
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5. FUNCTION OF USB
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Figure 1 Usb Function

6. USB
Host
 Controls the entire bus
 Keeps track of all attached devices and hubs
 Initiates communication with the devices
 Is a power source
Devices
 Communicates only with the host through
endpoints
 Implements standard or vendor specific functions
 Can draw power from the host
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7. INTRODUCTION TO AOA
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Figure 2 basic working of AOA

8. NEED FOR AOA PROTOCOL/ADK HOST
 Peripheral support of typical android gadget
 Adding more peripherals like temperature
sensor,CANBus support,SPI,I2C,PWM etc?
 With/without rooting of android device
 Android USB Host capabilities
 USB device capabilities of android gadget
 Alternatives for USB – Bluetooth,WiFi etc.
 Designing rich UI for your hardware control.
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9. INITIALIZATION
Attempt to start the device in accessory mode
Wait for and detect connected devices
Determine the device’s accessory mode support
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USB
DEVICE USB
HOST
Vender id
Product id
GET #51 Protocol
AOA 1.0 /2.0
START STRING #52
START ACCESSORY #53
Establish communications
Figure 3 Basic working and communication establishment step

10. ADK HOST
 In this protocol android gadget is kept in device
mode and external hardware will be chosen in host
mode.
 Any hardware with USB host capabilities and
capable of supplying a power of 5V@500mA to the
android
 device can be chosen for this purpose, which is
called as Android Accessory Development Kit(ADK)
or Accessory Host Simple USB communication with
two bulk end
points
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11. PAPER 1:-HOME AUTOMATION AND SECURITY
SYSTEM USING ANDROID ADK
• The system proposed in design a home automation
and security using android ADK(accessory
Development kit).
• The system has
– A standalone embedded system board android ADK.
– Home appliances are connected to ADK and android
mobile devices or tablet.
– All sensor’s are connected to input/output port of
embedded system board
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12. CONTINUED..
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Figure 4 block diagram of system

13. PAPER 2:-WIRELESS MONITORING AND
CONTROL SYSTEM VIA ANDROID
 Industrial remote monitoring and control systems
are usually based on PC, but it can hardly be
applied to fields that need mobile communication.
 Along with the developing of wireless
communication technology and mobile device,
using mobile devices to realize wireless remote
monitoring and control becomes possible and has
vast development space.
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14. CONTINUED..
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Figure 5 diagram of system

15. PAPER 3:- THE SMARTPHONE ACCESSORY
HEART RATE MONITOR
 Smartphone accessory that aims to determine the
human heart rate, especially for cardiac patients
who need to monitor their heart rate.
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Figure 6 block diagram of system

16. CONTINUED..
• that can provide patients suffering from cardiac
diseases with a portable heart rate monitor which is
a Smartphone accessory that can be connected via
USB to the phone and help them continuously in
tracking their medical condition and to be alert of
any possible life threatening heart complications in
addition to sharing the resulted heart rate with their
physician by sending an SMS to seek medical help
and supervision with a press of a single button.
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17. PAPER 4:-PERSONAL HEALTH
MONITORING WITH ANDROID BASED
MOBILE
 In this paper they developed an android based
mobile data acquisition solution.
 Which collects all personalized health information of
the end user store analyze and visualize it on
Smartphone.
 The smart phone can collect data form wired
network (USB) and wireless network (Wi-Fi and
Bluetooth)
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18. CONTINUED..
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Figure 7 model of how system work

19. PAPER 5:-DESIGN OF WIRELESS OPTICAL
ACCESS SYSTEM USING LED BASED
ANDROID MOBILE
 In this system they demonstrate a directional
wireless visible light communication system based
on android mobile
 Two android device transmit there data
simultaneously
 The design of hardware is based on usb port.
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20. CONTINUED..
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Figure 8 how device connected

21. PROBLEMS
 Using Android accessory protocol we use mainly
ardiuno board as ADK in all above system.
 And they are do only specific task
 And it dependent on ardiuno software.
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22. PROPOSED SYSTEM
 developing the device driver for android open
accessory based system
 I mainly focus on Linux based system
 In which we can easily interface the device with any
Linux based board.
 Using device driver we can access all
 bus’s like (can , i2c , spi)
 GPIO’s (for input and output)
 PWM , different type of sensors
 Remote Linux shell access
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23. REFERENCE
 [1]Javale Deepali, M. M. (March 2013). Home Automation and Security
System Using . International Journal of Electronics Communication and
Computer Technology (IJECCT) , 382-385.
 [2]Lipeng Fan, L. D. (2013). Design of Wireless Optical Access System
using LED Based Android Mobile. IEEE .
 [3]Lunn, G. (n.d.). Extending the Scope of Android Platforms via USB
connectivity.
 [4]Maximilian Nicolae, L. L. (2013). Embedding Android devices in
automation systems. International Symposium for Design and
Technology in Electronic Packaging IEEE .
 [5]Personal health monitoring with Android based mobile devices. (2013).
MIPRO ,Croatia .
 [6]Rajesh Sola, R. (2014). Android Open Accessory Protocol Turn Your
Linux machine as ADK. Opensourse for you .
 [7]The Smartphone accessory heart rate monitor. (2013). International
Conference , 1,5.
 [8]Zhen Huang, Y. L. (3ca 2013). Wireless Monitoring and Control
System Via Android Tablet PC. 2nd International Symposium on
Computer, Communication, Control and Automation , 449-452.
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24. Thank you
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