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. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.






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






3. 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






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






5. UHF and microwave passive tags






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






7. 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






8. Reader transmits a continuous-wave RF signal into the reading environment






9. 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






10. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.






11. Receives analog signals from the tag via the reader antenna






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






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






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






15. Measurement of power for radiation of antenna used in Europe






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






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






18. 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






19. 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






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






21. 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






22. Tags collide completely or not at all (Theoretically proven maximum utilization= 36.8%)






23. Die-cut web with adhesive - film face






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






25. 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%)






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






27. Also called an 'interrogator' - A device that can read from and write data to compatible RFID tags - Also doubles up as a writer






28. 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






29. Die-cut web adhesive - paper face






30. 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)






31. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly






32. 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.






33. 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






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






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






36. Optical and RFID hybrid






37. Inductive coupling and passive backscatter (capacitive coupling)






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






39. Continuous web - no adhesive






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






41. These are categorized into Aloha based protocols and tree based






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






43. Time for an associated tag to be read






44. 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






45. Neighboring readers interrogate a tag simultaneously (can be easily solved because they can detect this and communicate to each other)






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






47. 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






48. 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






49. 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






50. 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