Assisted Living Device Overview and Software Implementation

1
Assisted LivingDevice Overview and Software
Implementation

• Cham Oh
• December 5, 2005

2
TOPICS

• Medical Devices Overview
• RFID Devices Overview
• Cell Phone Programming

3
Medical Devices

• Criteria
• Wireless Technology
• Medical Features
• Pluggability
• Programmability
• Design
• Cost

4
Nonin Pulse Oximeter

• Bluetooth (30 ft range)
• SpO2, heart rate, plethysmographic data
• Can be connected to any bluetooth-enabled device
• Open communication protocols
• Development kit support
• 495
• www.nonin.com

5
RFID Devices

• Long-range detection
• Tracking/locationing
• Programmability
• Design
• Cost

6
RFID Products

• RFIDeas
• Xtag
• IAutomate

7
RFID Issue

• Is it possible to exactly locate the tag?

8
Cell Phone Programming

• Embedded Runtime Environments
• BREW (Binary Runtime Environment for Wireless)
• Developed by Qualcomm
• C/C
• J2ME (Java 2 Platform Micro Edition)
• Developed by Sun
• Java

9
BREW vs. J2ME

• Deal
• We dont need a complex program.
• We want freedom in programming.
• We want it for free!

10
Cell Phone Programming

• Which cell phone do we need to purchase?
• Bluetooth
• J2ME
• SDK support
• Motorola
• Bluetooth-enabled
• J2ME support
• Motorola SDK v5.2.1 for J2ME
• Device emulator support

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J2ME Development

• J2ME IDE
• JDK 5.0 Update 6
• NetBeans with Mobility Pack (http//www.netbeans.o
  rg/downloads/index.html)
• CodeWarrior Wireless Studio 7.0
  (http//www.metrowerks.com) pay toolkit
• Java APIs
• Bluetooth Wireless Technology (JABWT), JSR082
• Network APIs

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Bluetooth Stack
13
Bluetooth Application
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Initialization

• ...
• private LocalDevice localDevice // local
  Bluetooth Manager
• private DiscoveryAgent discoveryAgent //
  discovery agent ...
• / Initialize /
• public void btInit() throws BluetoothStateExceptio
  n
• localDevice null
• discoveryAgent null
• // Retrieve the local device to get to the
  Bluetooth Manager localDevice
  LocalDevice.getLocalDevice()
• // Servers set the discoverable mode to GIAC
  localDevice.setDiscoverable(DiscoveryAgent.GIAC)
• // Clients retrieve the discovery agent
• discoveryAgent localDevice.getDiscoveryAgent()
  
• ...

15
DiscoveryAgent / DiscoveryListener
16
Device Discovery State
17
Service Discovery State
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Discovering Nearby Dervices

• public class BtClient implements
  DiscoveryListener
• ...
• Vector discoveredDevices new Vector()
• ...
• // DiscoveryListener Callbacks
  ///////////////////////
• /
• deviceDiscovered() is called by the
  DiscoveryAgent when
• it discovers a device during an inquiry.
• /
• public void deviceDiscovered( javax.bluetooth.Rem
  oteDevice remoteDevice, javax.bluetooth.DeviceClas
  s deviceClass)
• // Keep track of discovered remote devices by
  inserting
• // them into a Vector
• ...
• /
• inquiryCompleted() is called by the
  DiscoveryAgent when
• a device discovery cycle finishes.
• /
• public void inquiryCompleted(int param)

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Discovering Nearby Services

• /
• servicesDiscovered() is called by the
  DiscoveryAgent when
• a service search finds services.
• transID identifies the service search that
  returned results.
• serviceRecord holds references to the
  services found.
• /
• public void servicesDiscovered(int transID,
  javax.bluetooth.ServiceRecord serviceRecord)
• // Keep track of discovered services, adding
  them
• // to a Vector
• ...
• /
• serviceSearchCompleted() is called by the
  DiscoveryAgent
• implementation when a service search
  finishes.
• transID identifies a particular service
  search.
• responseCode indicates why the service search
  ended.
• /
• public void serviceSearchCompleted (int transID,
  int responseCode)
• // Now that the service discovery has been
  completed,

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UUID Class

• Universally Unique Identifier required for each
  service
• Represents short (16 or 32-bit) and long
  (128-bit) UUIDs
• Use command uuidgen (Windows), or uuidgen t
  (Linux)
• Ex) 2d266186-01fb-47c2-8d9f-10b8ec891363

21
SDDB and ServiceRecord Class
22
Device ManagementLocalDevice Class
23
RemoteDevice Class
24
Bluetooth Communication
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Network APIs

• CommConnection for serial interface
• HTTP connection
• HTTPS connection
• Socket Support
• UDP
• SSL

26
Socket Connection
27
Socket Connection
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References

• Suns J2ME http//java.sun.com/j2me
• Bluetooth Development Article http//developers.s
  un.com/techtopics/mobility/apis/articles/bluetooth
  intro/index.html
• Network Implementation http//developers.sun.com/
  techtopics/mobility/midp/articles/midp2network/
• Motorola Developer Program http//www.motocoder.c
  om