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






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






4. UHF and microwave passive tags






5. 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






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






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






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






9. Optical and RFID hybrid






10. Die-cut web with adhesive - film face






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






12. 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






13. Why ___________ is better: Cost of printed antennas varies between 24-44% of copper antennas - Printed antennas show 93-96% radiation efficiency compared to copper antennas...






14. 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.






15. 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






16. 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






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






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






19. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader






20. Continuous web - no adhesive






21. 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






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






23. Inductive coupling and passive backscatter (capacitive coupling)






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






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






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






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






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






29. The time during which a reader can emit RF energy to read tags






30. 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






31. Used to transmit AC power and the clock cycle via its antennas to the tags in its read zone






32. 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






33. 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






34. 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






35. 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






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






37. Smart cards - smart label - etc.






38. Open image in meshed screens. Conductive ink "squeezed" thru open mesh.






39. Die-cut web adhesive - paper face






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






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






42. Brains of the RFID tag






43. Time for an associated tag to be read






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






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






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






47. 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






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






49. IC Chip - Antenna/Inductor - Power Source






50. Inductive coupling and passive backscatter (capacitive coupling)