RFID Group Progress Leader: Muhammad Salman Younas Team: Jawad Khalil Sheikh Saad Al-Shaalan Muhammad Al-Khamees

RFID Group Progress

Leader: Muhammad Salman Younas

Team: Jawad Khalil Sheikh Saad Al-Shaalan Muhammad Al-Khamees

•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) ($0.20-$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

What is RFID?

•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

RFID Tag Frequencies

•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

Factors Affecting Reader Choice

•Skyetek M1 Reader (Storage Room)

•Intensecomp Reader (Products Gate)

Readers Used

•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

Tasks Completed

•Maximum tag ranges

Skyetek M1 Reader Tag Ranges

4-5 cm 5-7 cm 10-12 cm

•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

Skyetek M1 Reader Tags

•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

Skyetek M1 Reader Problems

•Building the antenna

Single Loop Antenna

Copper Tape External Antenna

Skyetek M1 Reader (Hardware)

•Adjust C3 and C4 values to obtain maximum range


•Antenna built and test read was successful


•Reading range from antenna very poor

– use copper tape for antenna material

without antenna with antenna


•Java Application

Skyetek M1 Reader (Software)

SkyeTekComm SkyeTekMessaging SkyeTekListener CRC16 SkyeTekApplication

SkyeTekCommImpl

SkyeTekSerialComm

SkyeTekReader

SkyeTekTag

Debug

Format

messaging reader utility demo

skyetek

comm

Numbers

SkyeTekException

•Java Application


•Java Application







•Detecting tags depends greatly on their position





•Antenna Multiplexer

SkyePlus MXH Antenna Multiplexer

•Use multiple reader connections– a COM port needed for each M1 reader

Skyetek M1 Multiple Readers

Documents

RFID Group Progress Leader: Muhammad Salman Younas Team: Jawad Khalil Sheikh Saad Al-Shaalan Muhammad Al-Khamees