Test your basic knowledge |

RFID Technology

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • 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. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)






2. Proximity systems (low range -mm) medium range (cm) and long range (m)






3. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field






4. Die-cut web adhesive - paper face






5. Process of creating a tag and uniquely associating it with an object






6. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result






7. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)






8. Class= Functionality - - Class 0 -1 -2 -3 -4 & 5






9. In this mode - reader continuously reads tags in its read zone






10. Low Frequency(LF) - High Frequency(HF) - Ultra high frequency (UHF) and Microwave frequency






11. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.






12. Responsible for implementing the reader protocol to communicate with compatible tags






13. Used for storing data such as the reader configuration parameters and a list of tag reads






14. Measurement of power for radiation of antenna used in US






15. Reader communicates to a tag through reader's antennas - a separate device that is physically attached to a reader - at one of its antenna ports - by means of cable. Called this because it creates an electromagnetic field to couple with the tag.






16. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions






17. controls the internal functions under the command of the processor






18. To disassociate the tag from a tagged object and optionally destroy it






19. 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






20. UHF and microwave passive tags






21. 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






22. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves






23. Developed in the 1970s for a radio packet network at the University of Hawaii (hence the name) - 4 tags and 1 reader - Allows tags to collide partially (Theoretically proven maximum utilization=18.4%)






24. RF energy radiates from antenna in linear fashion - Provide longest range - Sensitive to the orientation of tag - Has single E-field component - Can have a narrow beam pattern - Best for application with known tag orientation






25. Uses a serial communication link to communicate with an application - Reader is physically connected to a computer's serial port using an RS-232 or RS-485 serial connection. Both of these connections have an upper limit on the cable length that can b






26. The act of writing the tag data by reader






27. Generation= Timeline of Introduction - Gen 1 & 2 - Gen 2 protocol backward compatible






28. 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






29. 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






30. 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






31. Receives signal from reader and radiates a response back to the reader - LF or HF: induction coil - UHF or Microwave Frequency: printed antennas






32. Pattern(Footprint) - Power/Attenuation - and Polarization






33. Inductive coupling and passive backscatter (capacitive coupling)






34. 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






35. Continuous web - no adhesive






36. 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






37. 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






38. Type of stationary reader that can print a bar code and create (i.e. write) an RFID tag on a smart label in an integrated operation - Reads the smart label tag that it has just written to validate the write operation. If the validation fails - it rej






39. More than one tag tries to respond to a reader at the same time.






40. This type of antenna is largely unaffected by tag orientation - Preferred in system that uses high UHF or microwave frequencies in an operating environment where there is a high degree of RF reflectance (due to presence of metals and so forth)






41. Provides electrical power to other tag elements - Can harvest power from the signal received from the reader - Can have its own internal power source - Active - semi-passive and passive






42. Die used to "stamp" out the shape of antenna. Take up roller rolls the unused material into waste roll.






43. Standards = EPC global & ISO 18000 - Different Organizations






44. Optical and RFID hybrid






45. Similar to guessing a number made of 1's and 0's by guessing each number one at a time






46. Fixed to meet FCC and other regulatory requirements. The signal can be decreased or attenuated to limit the tag read window or aim it only at tags you want to read






47. changes signal received from reader to include data that will be transmitted back to the reader






48. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation






49. Smart cards - smart label - etc.






50. IC Chip - Antenna/Inductor - Power Source