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Test your basic knowledge |
RFID Technology
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Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
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.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Used for storing data such as the reader configuration parameters and a list of tag reads
Memory
RFID SyCommunication methods
Circular Polarized Antenna
Polarization
2. Every time a tag is read - it is saved to this
Slotted ALOHA
Persist Time
Tag List
Slotted ALOHA
3. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
Attenuator
Copper Etching
UHF
Autonomous Mode
4. Can reduce power by placing this device in the transmission line. As a result - the antennas signal is reduced and the read range diminished. Proves useful in situations where the read zone needs to be constrained as a part of system requirements so
Attenuator
Coupling Element
Passive Backscatter (Capacitive Coupling)
PLC
5. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
ALOHA
Slotted ALOHA
Nulls(Voids)
Constructive Interference
6. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Linear Polarized Antenna
Circular Polarized Reader Antenna
Destructive Interference
Attenuator
7. Most sensitive component of an RFID system - Housed in enclosures for easy mounting. Look like plain - shallow boxes. - Varying placement of this is usually the easiest adjustment while troubleshooting and is vital to achieving a high read rate
Reader Antennas
Memory
Strap-to-Tag
Passive Backscatter (Capacitive Coupling)
8. The time during which a reader can emit RF energy to read tags
Types of Tag Frequencies
Duty Cycle
Sensor
Linear Polarized Reader Antenna
9. Optical and RFID hybrid
Tag class
Destructive Interference
Smart Label
Screen Printing
10. controls the internal functions under the command of the processor
ALOHA
Control Circuitry
Coupling Element
Reader Antennas
11. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
Linear Polarized Reader Antenna
Stationary Reader
Nulls(Voids)
Polarization
12. 'Central nervous system' of entire RFID hardware system. Establishing communication with and control of this component is the most important task of any entity which seeks integration
Reader Antennas
Slotted ALOHA
Linear Polarized Antenna
RFID Reader
13. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas
Antenna/Inductor
Receiver
Equivalent Isotropic Radiated Power (EIRP)
Passive Backscatter (Capacitive Coupling)
14. Responsible for implementing the reader protocol to communicate with compatible tags
Decommissioning The Tag
Tag List
Microprocessor
Passive Communication Methods
15. Standards = EPC global & ISO 18000 - Different Organizations
Processor
Tag Standards
PLC
Foil Stamping
16. Frequencies between 30-300 KHz - Generally use passive tags - have low data-transfer rates from the tag to the reader - and are especially good if the operating environment contains metals - liquids - dirt - snow - or mud. Active tags also available
Passive Backscatter (Capacitive Coupling)
Tag
Low Frequency (LF)
Antenna/Inductor
17. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Microprocessor
Strap-to-Tag
Wet Inlay
Passive Communication Methods
18. Broadcasts the reader transmitter's RF signal into its surroundings and receives tag responses on the reader's behalf. Therefore - proper positioning of these (NOT THE READERS) is essential for good read accuracy
Reader Antenna
RFID Reader
Foil Stamping
Tag
19. Reader receives and executes commands from an application running on a host machine from a user using a vendor-supplied client to communicate with the reader. After reader fully executes the current command - it waits for the next. Reader can execute
Power/Attenuation
Integrated Circuit Chips
Interactive Mode
Tag List
20. Can automatically turn on/off reader based on some external event detected. Can be used to provide some kind of input trigger to a reader
Sensor
ALOHA
Passive Backscatter (Capacitive Coupling)
ALOHA
21. Receives analog signals from the tag via the reader antenna
UHF
Integrated Circuit Chips
Receiver
Linear Polarized Antenna
22. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Agile Reader
Equivalent Isotropic Radiated Power (EIRP)
Types of tags
ALOHA
23. Brains of the RFID tag
Pattern(Footprint)
Tag Anti-Collision Protocols
Memory
Integrated Circuit Chips
24. LF and HF passive tags - Current flowing through a conductor generates a magnetic field around the conductor and vice versa - Readers antenna uses current to generate magnetic field - Tag's antenna when exposed to the magnetic field generates the cur
Inductive Coupling
Slotted ALOHA
Characteristics Of Antennas That Contribute To Tag Readability
Agile Reader
25. The reflection of reader antenna signals on RF-opaque causes this
Smart Label
Microprocessor
Stationary Reader
Multipath
26. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
Circular Polarized Reader Antenna
Coupling Element
Annunciator
Read range
27. Process of creating a tag and uniquely associating it with an object
Smart Label
Commissioning The Tag
Persist Time
Tag Collision
28. Time for an associated tag to be read
Slotted ALOHA
Microwave Frequency
Persist Time
Memory
29. Proximity systems (low range -mm) medium range (cm) and long range (m)
Read range
Passive Backscatter (Capacitive Coupling)
Microwave Frequency
Persist Time
30. In this mode - reader continuously reads tags in its read zone
Creating A Tag
Coupling Element
Linear Polarized Reader Antenna
Autonomous Mode
31. These are categorized into Aloha based protocols and tree based
Tag Anti-Collision Protocols
Tag List
UHF
Tag Generations
32. One of the most versatile actuators. Widely used in manufacturing plants. They enable a variety of actions to be performed (such as monitoring and controlling a product packaging line - or applying a predetermined amount of torque to nuts in a mechan
PLC
Equivalent Isotropic Radiated Power (EIRP)
Tag
ALOHA
33. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone
Screen Printing
UHF
Transmitter
Low Frequency (LF)
34. RF energy radiates from antenna in circular fashion - Slightly reduced range - Provides greater tolerance to tags in various orientation and bounce off of and bypass obstructions - 2 E-field components that are equal in magnitude - 90 degrees out of
Power/Attenuation
Dry Inlay
Creating A Tag
Circular Polarized Reader Antenna
35. UHF and microwave passive tags
Reader Collision
Polarization
Passive Backscatter (Capacitive Coupling)
Actuator
36. Similar to guessing a number made of 1's and 0's by guessing each number one at a time
Tag Anti-Collision Protocols
Equivalent Isotropic Radiated Power (EIRP)
Commissioning The Tag
Adaptive Binary Tree Anti-Collision
37. Interprets the signal received from reader and controls memory storage and retrieval
Constructive Interference
Tag List
Read range
Processor
38. Silicon chip is picked up by robotized arm using precise vacuum nozzle. Chip is flipped so that its electrical contacts point face down. Chip is aligned with the antenna and pressure and heat is applied.
Reader Collision
Flip-chip (Chip-to-Tag)
Tag Standards
Persist Time
39. Measurement of power for radiation of antenna used in Europe
Effective Radiated Power (ERP)
Agile Reader
Low Frequency (LF)
Commissioning The Tag
40. Ranges from 300 MHz to 1GHz - Passive system operates at 915 MHz in the US and at 868 MHz in Europe - Active system operates at 315 MHz and 433 MHz - Can use both active and passive tags - Has a fast data-transfer rate between tag and reader - but pe
Read range
UHF
Linear Polarized Antenna
Wet Inlay
41. The 3D energy field generated by the antenna (also called reading area)
Tag Standards
Smart Label
Pattern(Footprint)
Characteristics Of Antennas That Contribute To Tag Readability
42. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer
Tag Standards
RFID Reader
Memory
Control Circuitry
43. Determines the read zone of a reader - Also called an antenna pattern - 3D region shaped somewhat like an ellipsoid or a balloon projecting out the front of the antenna. Never uniformly shaped like an ellipsoid but almost always contains deformities
Dry Inlay
Memory
Antenna Footprint
RFID SyCommunication methods
44. Also called a fixed reader - Mounted on a wall - portal - or some suitable structure in the read zone. Readers not generally very tolerant of harsh environmental conditions - therefore if installed outdoors or on moving objects - take care to ruggedi
Slotted ALOHA
Stationary Reader
Constructive Interference
Main Components of RFID Tag
45. The act of writing the tag data by reader
Antenna Footprint
ALOHA
Destructive Interference
Creating A Tag
46. Ranges upward from 1 GHz - Typically operates at either 2.45 GHz or 5.8 GHz - Can use both semi-active and passive tags - Has FASTEST data-transfer rate between tag and reader - Performs poorly in presence of metals and liquids - Antenna of a passive
Microwave Frequency
Tag List
Tag Anti-Collision Protocols
Actuator
47. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Equivalent Isotropic Radiated Power (EIRP)
Integrated Circuit Chips
Types of tags
Polarization
48. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.
Foil Stamping
Adaptive Binary Tree Anti-Collision
Actuator
Effective Radiated Power (ERP)
49. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
Adaptive Binary Tree Anti-Collision
Slotted ALOHA
Tag Collision
Destructive Interference
50. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5
Antenna/Inductor
Tag class
Read range
RFID Reader
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