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






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






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






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






6. UHF and microwave passive tags






7. Continuous web - no adhesive






8. 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






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






10. Dead zones that surround protrusions in antenna footprint






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






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






13. 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






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






15. 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






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






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






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






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






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






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






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






23. 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






24. 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%)






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






26. 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






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






28. 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






29. '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






30. 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






31. Die-cut web adhesive - paper face






32. Optical and RFID hybrid






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






34. 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






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






36. 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.






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






38. 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






39. 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






40. 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






41. Die-cut web with adhesive - film face






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






43. 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






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






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






46. 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...






47. Brains of the RFID tag






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






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






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