slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Smart Mattress PowerPoint Presentation
Download Presentation
Smart Mattress

Loading in 2 Seconds...

play fullscreen
1 / 23

Smart Mattress - PowerPoint PPT Presentation


  • 432 Views
  • Uploaded on

Smart Mattress Bryan Kuo, Priyen Patel, Dev Shah, Xitij Shah, Tim Stamm Georgia Institute of Technology December 5, 2008 Project Overview Goals: Prevent bedsores acquired on hospital/nursing home beds Wetness Detection Inactivity Detection Prevent incorrect medication administration

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Smart Mattress' - MartaAdara


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Smart Mattress

Bryan Kuo, Priyen Patel, Dev Shah, Xitij Shah, Tim Stamm

Georgia Institute of Technology

December 5, 2008

slide2

Project Overview

  • Goals:
    • Prevent bedsores acquired on hospital/nursing home beds
      • Wetness Detection
      • Inactivity Detection
    • Prevent incorrect medication administration
      • Patient Identification System
      • Patient Barcode Display
  • Clients:
    • Hospitals
    • Nursing Homes
  • Cost: $1,055
slide3

Design Objectives

  • Identify patients using RFID
  • Display patient information and barcode on a PC monitor
  • Detect moisture and patient inactivity that could cause bed sores
  • Alert staff if patient is in danger of developing bed sores
slide6

Previous RFID System

  • Passive RFID System
  • OBID i-scan HF RFID Reader
  • OBID i-scan HF Pad Antenna
  • RFID Operating Frequency: 13.56 MHz
  • RFID Antenna Range: 7 in.
  • RFID Transmitting Power: 1W ± 2 dB

* Note: This range did not meet our specifications

slide7

Current RFID System

  • Active RFID System
  • Wavetrend RX201 Active RFID Reader
  • Wavetrend AN100 Active Whip Antenna
  • RFID Operating Frequency: 433 Mhz
  • RFID Antenna Range: 35 ft
  • RFID Wavelength: 2.3 ft
  • Tag Battery Life: 5 years
slide8

RFID System

  • RFID antenna located at foot of bed
  • Wavetrend Active RFID tags
  • Patient tag compared to patient ID database
  • Patient name and barcode displayed on PC

RFID Tag Reader and Antenna HP Slimline PC

slide12

Wetness Detection

  • 2 conductive loops of tape connected to wetness detection circuit
  • 1st comparator input monitors moisture
  • 2nd comparator detects breaks in the conductive loop
phidget 8 8 8 interface kit
Phidget 8/8/8 Interface Kit
  • Interface between inactivity monitoring and wetness detection systems with HP Slimline PC
  • 4 analog inputs for FSR strips
  • 1 analog input for sampling wetness detection circuit output
slide15

Current Status

  • Wetness detection system
    • 2 conductive loops, comparator, and 2 9V batteries
    • Successfully implemented and tested on breadboard
  • Inactivity monitoring system
    • 4 Trossen Robotics force sensing resistor strips
    • Controlled through Phidget 8/8/8 interface kit
    • Successfully implemented and tested
  • RFID System
    • Wavetrend Active RFID Reader/Antenna
    • Successfully implemented and tested
design specifications

Technical Specifications

Proposed

Actual

RFID Reader

RFID Operating Frequency

13.56 MHz

433 MHz

RFID Transmitting Power

1W ± 2 dB

N/A

Max RFID Reading Distance

1 ft (12 in.)‏

35 ft.

RFID Current Draw

Max. 0.5 A

Multiplexer

Microprocessor

PIC18 LF2321

Phidget 8/8/8 Interface Kit

Power Supply

3.3  V

2 9V batteries

Current Consumption

< 5mA

Switching Loop-time

16 ms

Same

Trossen Robotics 24” FSR

Force Sensitivity Range

0 to 1000 lbs

Same

Pressure Sensor Range

1.5 to 150 psi

Same

Design Specifications
competing products
Competing Products

Total Care SpO2RT Hospital Bed

Secure II Med/Surg Hospital Bed

$28,500

$10,000

slide18

Part

Quantity

Unit Cost

Total Cost

FSR Robotics Sensor Kit

4

$27

$108

Phidget 8/8/8

1

$80

$80

Wires/Cables

1

$15

$15

9V Battery

2

$7.50

$15

RFID Tag and Reader

1

$307

$307

Conductive Tape

75ft

$50

$50

Mattress Foam

1

$150

$150

Bed Sheet

1

$30

$30

HP Slimline PC

1

$250

$250

PC Monitor

1

$50

$50

Total Equipment Cost

$1,055

Cost
selling points
Selling Points
  • Lower cost
    • Costs $1,055
    • Competitor products cost at least $10,000
  • Portable
  • More versatile
    • Combines wetness and inactivity detection
    • Utilizes RFID to prevent improper medication administration
  • Appealing Graphical User Display
future considerations
Future Considerations
  • Use a smaller, cheaper microcontroller such as a PIC
  • Implement systems on a PCB
  • Find smaller wrist/ankle band active RFID tags
slide21

PIC Microcontroller

  • Used for integrating wetness detection, inactivity monitoring, and patient identification systems into a low-cost power-efficient package
  • Low power operation using 3V coin cell battery
  • Programmed in C via 6-pin header through PICkit2
  • RS232 communication to PC using onboard UART
  • Pushbutton and LED for debugging
slide22

PIC for Inexpensive System Integration

  • RFID
    • Implement either using RS232 with current reader or SPI enabled reader
  • Inactivity monitoring
    • Sample force sensing resistors using onboard ADC
  • Wetness detection
    • Sample output of comparators using digital input
  • LCD for display of system status
slide23

Demonstration Plan

  • Inactivity Detection
    • Group member lays for extended period of time.
    • LCD monitor displays inactivity alarm
  • Patient Identification
    • RFID tag located within antenna range
    • LCD monitor displays patient name
    • LCD monitor displays patient medication barcode
  • Wetness Detection
    • Salt water poured on bed
    • LCD monitor displays wetness alarm