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. Optical and RFID hybrid






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






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






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






5. 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.






6. 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)






7. 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






8. 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






9. 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






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






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






12. 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.






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






14. Every time a tag is read - it is saved to this






15. Inductive coupling and passive backscatter (capacitive coupling)






16. IC Chip - Antenna/Inductor - Power Source






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






18. 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






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






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






21. 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






22. The 3D energy field generated by the antenna (also called reading area)






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






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






25. '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






26. 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






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






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






29. 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






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






31. Serves as writable or non-writable data storage






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






33. 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






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






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






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






37. The act of writing the tag data by reader






38. Inductive coupling and passive backscatter (capacitive coupling)






39. 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%)






40. 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






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






42. 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






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






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






45. The sender of this found out whether the transmission was successful by listening to the broadcast. If there was a collision - the sender transmitted after a random waiting period. The tags periodically send data packets with random quiet periods and






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






47. Interprets the signal received from reader and controls memory storage and retrieval






48. Brains of the RFID tag






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






50. Continuous web - no adhesive