1

• 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

3

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

4

• 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

5

Circuit DiagramCircuit Diagram

6

7

8

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

10

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

11

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

12

• 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

13

• Fix computer code so that program can restart properly after employee exits bathroom.

• Expand design for multi-personnel restrooms.

14

Price

Parts $1,730

Market Price $2,500

Research and Development per Year

$30,000

15

16

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