RFID technology for vehicle and container tracking Challenges: • Extremely lossy environment due to the presence of numerous metals that cause degradation in wireless signals • Operating bandwidth of RFID nodes can vary from one country to another • Multipath effect of wireless signals • Power Constraints • Materials (substrate for electronics) and packaging
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RFID technology for vehicle and container trackingathena.gatech.edu/research/AUTOMOTIVE/automotive.pdf · RFID technology for vehicle and container tracking Challenges: • Extremely
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RFID technology for vehicle and container
tracking
Challenges:
• Extremely lossy environment due to the presence of numerous metals that cause degradation in wireless signals
• Operating bandwidth of RFID nodes can vary from one country to another
• Multipath effect of wireless signals
• Power Constraints
• Materials (substrate for electronics) and packaging
RFID in Automotive Applications:
Example: Radiation for a Single Car
RFID Tag placed vertically on the license plate
• Shows the importance of placing the RFID
tag correctly.
RFID in Automotive Applications:
In the Parking Lot
Model of car body in 3D EM Simulator FEKO
Radiation Pattern of RFID Antenna placed on back car’s license plate
The existence of the front car heavily suppresses the signal of
the RFID placed on the back car’s license plate. Energy goes
from the back instead of front. It shows the importance of
looking for the correct place for RFID tag.
RFID in Automotive Applications:
In the Parking Lot
The performance of a windshield tag in a parallel parking situation.
Looking for the Correct Positioning …
• May build a thin/thick layer of ice/snow/water on windows
• Simulate the environment with the humid conditions (changes in
dielectric constant and loss tangent of air)
Environmental Factors:
Snow, Ice, Rain, Humidity
In Tire Analysis
• Tilt the antenna 45° • Radiation normal to the tire is better