RFID Pressure Sensor System for Hospital Mattresses to Prevent Infections and Bedsores - PowerPoint PPT Presentation

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RFID Pressure Sensor System for Hospital Mattresses to Prevent Infections and Bedsores

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RFID Pressure Sensor System for Hospital Mattresses to Prevent Infections and Bedsores Bikram Virk Sujoy Sanyal Ryan Eiswerth Wasif Khawaja Mushfiq Saleheen – PowerPoint PPT presentation

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Title: RFID Pressure Sensor System for Hospital Mattresses to Prevent Infections and Bedsores


1
RFID Pressure Sensor System for Hospital
Mattresses to Prevent Infections and Bedsores
  • Bikram Virk
  • Sujoy Sanyal
  • Ryan Eiswerth
  • Wasif Khawaja
  • Mushfiq Saleheen

Dr. Koblasz, ECE4884 L05 April 22, 2008
2
OVERVIEW
Develop an inexpensive hospital bed mattress that
can reduce the risk of bedsores and spread of
Nosocomial infections. Cost of prototype
1,290 (1,300 less than
predicted)
  • 1/21

3
Bedsores
Life-Threatening
  • Definition
  • Unrelieved pressure to part of
    body
  • for extended period of time,
    cutting
  • off oxygen and blood flow
  • Statistics
  • - 60,000 deaths/years in America
  • - 1 million patients/year in
    America
  • - 2/3 of bedsores occur in people
  • over 70 years old
  • Costs over 1 billion/year
  • 2/21

4
Nosocomial Infections
  • Life-Threatening - All Hospitalized
    Patients at Risk
  • Definition
  • Hospital-Acquired Infections caused by
    bacteria,
  • viruses, etc. Includes Staph
    Infections
  • Statistics
  • - more than 2 million cases/year
    in America
  • - 17,500 70,000 deaths/year in
    America
  • Causes
  • - Sloppy hygiene 36 preventable (CDC
    report)
  • - Aging hospitals old mattresses
  • Costs - 4.5 - 5.7 billion/year
  • 3/21

5
Main Components of Project
  • 4/21

6
  • 5/21

7
Movement Monitoring System
Trossen Robotics 24 Force Sensing Resistor
Interface Kit 8/8/8
Voltage Divider
  • 6/21

8
WARNING PLEASE MOVE
TIMER 30 Min
  • 7/21

9
WARNING EGRESS DETECTED
  • 8/21

10
RFID
  • Monitor patient contact
  • System
  • - Operating Frequency 13.56MHz
  • - Target Range 24 with 1 Watt reader
  • - Tags worn on wrist
  • 9/21

11
RFID System
  • 10/21

12
Identification Process
  • 11/21

13
WARNING DR. SMITH PLEASE
STAND BACK
  • 12/21

14
Multiplexer Design
Relays
Antennas
  • 13/21

15
Competing Products
Total Care SpO2RT Hospital Bed
28,500
Secure II Med/Surg Hospital Bed 10,000
  • 14/21

16
Product Quantity Unit Price Price
Movement Detection System Trossen Robotics 24 FSR 4 24 80
Movement Detection System HP Pavillion Slimline s7700e PC 1 400 400
Movement Detection System Cables 1 10 10
RFID System TI-FEIG RFID Reader 10 1 350 350
RFID System Copper Plating 25 ft. 20 100
RFID System Antenna Board 1 pair 100 100
RFID System PIC Kit II Microprocessor 1 250 250
Total Equipment Cost Total Equipment Cost Total Equipment Cost 1,290
  • 15/21

17
Selling Point
  • No need to buy new beds
  • Installed as add-on to existing beds
  • Money saved
  • 16/21

18
Current Status
Specification Proposed Actual
RFID Reader
- Operating Frequency 13.56 MHz 13.56 MHz
- Current Draw Max. 0.5 A Max. 0.5 A
- Detectable Range 2 ft (24 in.) 1.5-1.75 ft. (18-21 in.)
Multiplexer
- Power Supply Not Proposed 3.3 V
Trossen Robotics 24 FSR
Force Sensitivity Range lt100 g to gt 10 kg lt100 g to gt 10 kg
Pressure Sensor Range lt 1.5 psi to gt 150 psi lt 1.5 psi to gt 150 psi
Sensitivity to Vibration Not Significantly Affected Not Significantly Affected
Allowed Patient Rest Time 30 minutes 10 seconds
Senor Time Monitoring Every minute Every second
  • 17/21

19
Obstacle Proximity to Metal
  • 18/21

20
Alternative Solutions
  • Dynasys 13.56 MHz Antenna
  • 2 foot range
  • De-Q feature
  • 400
  • 19/21

21
For Future Groups
  • Buy Professionally
  • made antennas
  • Bedside Falls
  • 20/21

22
For More Information Visit Us At
www.ece.gatech.edu/academic/courses/ece4007/08spri
ng/ece4007l05/ak11
  • 21/21

23
RFID Pressure Sensor System for Hospital
Mattresses to Prevent Infections and Bedsores
  • Bikram Virk
  • Sujoy Sanyal
  • Ryan Eiswerth
  • Wasif Khawaja
  • Mushfiq Saleheen

24
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26
Proximity to Metals
  • Difficult to find Matching Network

27
  • Nearby PC monitors
  • PROXIMITY WITH METALS Altered performance of the
    RFID system can be expected when metals are in
    close proximity of the radiation field. Proximity
    to metals effectively lowers the antenna's
    inductance. Lower inductance causes an increase
    in resonant frequency and also a reduction in
    "Q". Designers may consider starting with a
    higher-than-needed "Q" "in the lab" to start
    with, expecting it to be lowered when it is
    installed in its intended location. External
    capacitance may be required to tune the modified
    antenna system back to resonance. These types of
    situations can be experienced around conveyor
    belt structures and also embedding antenna loops
    on concrete driveways where metal re-bar absorbs
    some of the radiated energy.
  • http//rfidusa.com/superstore/product_info.php?pro
    ducts_id121

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29
Project Schedule
Acquire Parts 2/11/08
Construct Antennas 3/17/08
Movement Detection 3/19/08
Implement Comp. Interface 4/1/08
Implement the Full System 4/22/08
  • 14/21

30
  • Bring in computer to show pressure sensors

31
Obstacles
Antenna Designs
  • 18/21

32
Our Design
  • 19/21

33
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34
WARNING EGRESS
DETECTED
35
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37
Desired and Actual Specifications
Table 1. Technical Design Specifications
Specification Proposed Actual
RFID Reader
Transmitting Power 1W 2 dB 1W 2 dB
- Operating Frequency 13.56 MHz 13.56 MHz
Current Draw Max. 0.5 A Max. 0.5 A
Head-Section Antenna Dimensions 17 x 30 17 x 30
- Detectable Range 2 ft (24 in.) 1.5-1.75 ft. (18-21 in.)
Mid-Section Antenna Dimensions 9 x 30 9 x 30
- Detectable Range 2 ft (24 in.)
Foot-Section Antenna Dimensions 15 x 30 15 x 30
- Detectable Range 2 ft (24 in.)
Multiplexer
- Power Supply Not Proposed
Not Proposed
Not Proposed
Trossen Robotics 24 FSR
Force Sensitivity Range lt100 g to gt 10 kg lt100 g to gt 10 kg
Pressure Sensor Range lt 1.5 psi to gt 150 psi lt 1.5 psi to gt 150 psi
Sensitivity to Vibration Not Significantly Affected Not Significantly Affected
Allowed Patient Rest Time (No motion) 30 minutes 10 seconds
Pressure Senor Time Monitoring Every minute Every second
38
Trossen Robotics FSR
  • How it works

39
  • 5/21

40
In your final oral report, you should describe
similar patented and commercially available
devices
  • Explain details about your design and let us
    know why your design is better
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