RFID Group Progress

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RFID Group Progress

• Leader Muhammad Salman Younas

Team Jawad Khalil Sheikh Saad
Al-Shaalan Muhammad Al-Khamees
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What is RFID?

• Identification technology that uses RF
• Tags come in all sizes and shapes
• Two main types of tags
• Active own power source (60-300
  feet) (10-80)
• Passive powered by reader (2inches-30feet) (0.2
  0-3)
• RFID tags are small radio transmitters and
  receivers
• Mainly three frequency types
• LF 125-134.2 kHz
• HF 13.56 MHz
• UHF 868-928 MHz

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RFID Tag Frequencies

• Low Frequency
• good penetration of materials (including water)
• less susceptible to effect of metal
• longer read range than HF
• maximum read range 12 inches
• High Frequency
• supports anti-collision read
• tags lighter and cheaper than LF tags
• more memory capacity than LF tags
• maximum read range 4 feet
• Ultra-High Frequency
• behave more like light waves than radio waves
• perform poorly with water and metal
• read range 10 feet

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Factors Affecting Reader Choice

• Read/Write range
• Materials present in surroundings
• Tag memory needed
• Cost
• Tag form (size, shape, etc..)
• Host application and Communication Protocol
• Power Consumption
• Antenna size
• Interference

5
Readers Used

• Skyetek M1 Reader (Storage Room)
• Intensecomp Reader (Products Gate)

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Tasks Completed

• Achieved reader connectivity
• Performed Single Read
• Performed Anti-collision read
• Found maximum tag read ranges
• Testing in presence of water and metal
• Ran sample codes
• Skyetek M1 reader C, Java, C, VB
• Intensecomp reader VB.NET, Java, VB, C

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Skyetek M1 Reader Tag Ranges

• Maximum tag ranges

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Skyetek M1 Reader Tags

• Larger the tag, greater the range
• more signal reflection
• More the tags, less the range
• less power supplied per tag
• Presence of water and metal
• water and metals absorb HF waves
• reduces range greatly

9
Skyetek M1 Reader Problems

• Hardware
• Reader connectivity problem
• power supply was not connected properly
• No tags read problem
• internal antenna was not connected
• Read range problem
• built own antenna
• Software
• Java programs not running
• had to add Java commAPI classes

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Skyetek M1 Reader (Hardware)

• Building the antenna
• Single Loop Antenna
• Copper Tape External Antenna

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Skyetek M1 Reader (Hardware)

• Adjust C3 and C4 values to obtain maximum range

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Skyetek M1 Reader (Hardware)

• Antenna built and test read was successful

13
Skyetek M1 Reader (Hardware)

• Reading range from antenna very poor
• use copper tape for antenna material
• without antenna with antenna

14
Skyetek M1 Reader (Software)

• Java Application

skyetek
messaging
reader
utility
demo
comm
SkyeTekComm
SkyeTekMessaging
SkyeTekListener
CRC16
SkyeTekApplication
SkyeTekCommImpl
SkyeTekReader
Debug
SkyeTekSerialComm
SkyeTekTag
Format
Numbers
SkyeTekException
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Skyetek M1 Reader (Software)

• Java Application

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Skyetek M1 Reader (Software)

• Java Application

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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)

• Detecting tags depends greatly on their position

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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)
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Skyetek M1 Reader (Software)
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Skyetek M1 Multiple Readers

• Antenna Multiplexer
• SkyePlus MXH Antenna Multiplexer
• Use multiple reader connections
• a COM port needed for each M1 reader

27
Skyetek M1 Integration

• Main application is in C (.NET framework)
• RFID application
• Skyetek M1 reader Java
• Intensecomp reader VB.NET
• Intensecomp application can be easily integrated
• Skyetek M1 reader
• main application running
• needs to read tags
• will call Java program to run

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Skyetek M1 Integration

• Product Gate
• if (new item at product gate)
• if (product type of item not in DB)
• ask user to add product type
• add item to DB
• cancel item from expected order list
• if (expected order list 0)
• order received successfully

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Skyetek M1 Integration

• Storage Room
• while (true)
• read all tags in room
• if (count not equal to previous count)
• if (tagID not in delivery list)
• theft detected

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Conclusion

• Hardware Antenna built but range problem
• Software Java application complete
• Next task Integration into main system
• Expected completion date Dec 18, 2006

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Q u e s t i o n S ? ?