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 March 13, 2008

Develop an inexpensive hospital bed mattress that can reduce the risk of bedsores and spread of Nosocomial infections. Cost of prototype – $2,595 Project Completion Date: April 22, 2008 OVERVIEW 1/21

2/21 Bedsores 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 Life-Threatening

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 Nosocomial Infections 3/21

DESIGN GOALS 4/21

5/21

Movement Detection Components Trossen Robotics 24 inch Force Sensing Resistor - Variable resistor, 0-5 V High-Frequency DAQ 6/21

Please Change Position 7/21

Monitor patient contact System: - Operating Frequency: 13.56MHz - Range: 22-24” with 2 Watt reader - Tags worn on wrist or waist RFID 8/21

Hello Dr. Koblasz Identification Process 9/21

MARKETING ANALYSIS 10/21

Total Care SpO2RT Hospital Bed $28,500 Secure II Med/Surg Hospital Bed $10,000 Competing Products 11/21

Stryker Secure II Med/Surg $10,000 Total Equipment Cost$2,595 12/21 Hill-Rom Total Care SpO2RT $28,500 GroupProductQuanUnit Price Pressure System Multiplexer1$1500 NI-USB 6008 DAQ1$160 Trossen Robotics Pressure Strips 4$25$100 RFID TI-FEIG RFID Reader 1$350 Copper Plating1$7 Antenna Board 4 $2$8 MicroITX Motherboard 1$250 LCD Monitor1$200 Cables1$10 Project Costs

Selling Point 13/21 No need to buy new beds Installed as add-on to existing beds Money saved

Project Schedule Acquire Parts2/11/08 Construct Antennas3/17/08 Movement Detection3/19/08 Implement Comp. Interface4/1/08 Implement the Full System4/22/08 14/21

Current Status Pressure Strips LabView Computer DAQ 15/21

Obstacles 16/21

Obstacles 17/21

Antenna Designs Obstacles 18/21

Our Design 19/21

Future Work Construct Antennas Create Software Interface Testing 20/21

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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 Dr. Koblasz, ECE4884 L05 March 13, 2008

Antenna Designs Antenna design Hospital environment Positioning of antenna – on mattress below Positioning of pressure sensors – “we were worried soft mattress would affect results but surprised how sensitive. Pressure sensors 24 inches- center part too short…solution, look for shorter strips Obstacles