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• In industrialized nations, up to 30 percent suffer from food contamination
• In the US, 76 million people suffer and 5,000 die annually from food contamination
• Within 12 hours, one bacterium that splits itself every half hour can create 17
million bacteria2
• System to track employee hand-hygiene
• Reduce the chances of food contamination
• The system is being designed for Arby’s
• The cost of the system is $1,730
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Proposed Objectives Final Design Objectives
• Detect entry and exit of employee
• Detect use of soap dispenser
• Logging of RFID tag data
• Real-time alarm
• Targeted for food service industry
• Detects entry of employee
• Detects when soap is dispensed
• Logs of soap or non-soap usage
• Targeted for food service industry
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• Have employee wear ankle bracelet, with RFID tag
• Place antenna near entrance at floor level
• Use Motion sensor to detect entry
• Use IR sensor to detect soap dispensing
• Create data logs through C program
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Circuit DiagramCircuit Diagram
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7
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FEIG Pad
Antenna
Motion
Sensor
Soap
Dispenser
with Built –In Sensor
Computer Sensor Link
BoxDryer
Door
Sink
FEIG RFID
Reader
9
FEIG Pad
Antenna
FEIG Pad
Antenna
RFID
Tag
RFID
Tag
13.56 MHz RF13.56 MHz RF
FEIG RFID
Reader
FEIG RFID
Reader
Sensor Link Box
Sensor Link Box
Motion SensorMotion Sensor
eBox
Computer
eBox
Computer
USBUSB
USBUSBNetworkNetwork802.11g802.11g
Manager's
Computer
Manager's
Computer
Soap Dispenser SensorSoap Dispenser SensorDC: 0 - 5 VDC: 0 - 5 V
DC: 0 - 6VDC: 0 - 6V
CoaxialCoaxial
802.11g802.11g
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WirelessWireless
FEIG Pad
Antenna
FEIG Pad
Antenna
Sensor
Link Box
Sensor
Link Box
FEIG RFID
Reader
FEIG RFID
Reader
eBoxeBox
Manager's
Computer
Manager's
Computer
Motion SensorMotion Sensor
Soap
Dispenser
Soap
Dispenser
BraceBrace
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System is WaitingSystem is Waiting
Motion
Sensor Activated? NO(TIME OUT)NO(TIME OUT)
YESYES
Restroom UsedRestroom Used
Entry Detected with TagEntry Detected with Tag
System ResetSystem Reset
Soap
Dispensed?
YESYES
NO(TIME OUT)NO(TIME OUT)
Log
Updated
Log
Updated
False AlarmFalse Alarm
Employee is in RestroomEmployee is in Restroom
Log
Updated
Log
Updated
• Restarting the Program to wait for next employee.
• Employee is still in the restroom when a timeout occurs
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• Component CommunicationsRFID tag, IR sensor, and Motion sensor communication with eBox will be verified
• ProgramScenarios were tested and achieved a desired success rate of 80 percent
• SimulationA simulation of the entire system was
performed and is functioning
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• Fix computer code so that program can restart properly after employee exits bathroom.
• Expand design for multi-personnel restrooms.
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Price
Parts $1,730
Market Price $2,500
Research and Development per Year
$30,000
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WirelessWireless
FEIG Pad
Antenna
FEIG Pad
Antenna
Sensor
Link Box
Sensor
Link Box
FEIG RFID
Reader
FEIG RFID
Reader
eBoxeBox
Manager's
Computer
Manager's
Computer
Motion SensorMotion Sensor
Soap
Dispenser
Soap
Dispenser
BraceBrace
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