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ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Tunneling Infrared Sensor

ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Tunneling Infrared Sensor. Prepared by: Curtis Dance Dept. of Electrical and Computer Engineering Utah State University E: ; T: ( 435)797-; F: (435)797-3054 (ECE Dept.) W: http://. 3/10/2006. Outline .

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ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Tunneling Infrared Sensor

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  1. ECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Topic: Tunneling Infrared Sensor Prepared by: Curtis Dance Dept. of Electrical and Computer Engineering Utah State University E: ; T: (435)797-; F: (435)797-3054 (ECE Dept.) W: http:// 3/10/2006

  2. Outline • Reference list • To probe further • Major applications • Basic working principle illustrated • A typical sample configuration in application (application notes) • Block Diagram of Tunneling IR Sensor • Major specifications • Limitations • Applied Design • Suppliers ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  3. Reference list • http://design.stanford.edu/SMSSL/TunnelingSensors/THD/THDsensorDev.html • http://directory.eoportal.org/pres_SAPPHIRE.html • http://www.mda.mil/mdalink/pdf/bunc.pdf ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  4. To explore further History and Facts • “The Tunneling Infrared Sensor (TIS) was designed by Stanford professor Tom Kenny and colleagues of his at the Center for Space Microelectronics Technology at the Jet Propulsion Laboratory (JPL).” • “The driving technological motivation for the sensor development was to create miniature sensors with high performance.” • “Electron tunneling is a quantum mechanical phenomena originally developed for use in microscopy.” http://design.stanford.edu/SMSSL/TunnelingSensors/THD/THDsensorDev.html ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  5. To explore further(cont.) “Electron tunneling occurs when electrons cross a narrow energy barrier. For this sensor, this barrier is caused by maintaining two metallic electrodes a small distance apart. The membrane and tip are held roughly 10 Angstroms apart when the sensor is operating properly.” ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  6. “This system balances the forces on the membrane to keep the current (and therefore separation distance) constant, so the external forces on the membrane can be measured by measuring the force the controller applies to balance these external forces. So to measure different phenomena, we need to make these phenomena apply forces on the membrane.” http://design.stanford.edu/SMSSL/TunnelingSensors/Overview/TunnelingSummary.html ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  7. Major Applications • Space Based Measurements of Infrared Radiation from Planetary Surfaces • Earth Horizon Detection for Spacecraft • Ballistic Missile Defense • Biological Thermographic Applications -Thermometers -Spectrometers ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  8. Major Applications(cont.) • “IR sensors can be used in a variety of applications where temperature sensing and limited chemical analysis are required. -Anesthetic Gas Analyzers -Noninvasive Blood Analysis -Tumor Detection” http://www.mda.mil/mdalink/pdf/bunc.pdf ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  9. Basic Working Principle Illustrated ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  10. Typical Sample Configuration in Application ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  11. Block Diagram of Tunneling IR Sensor ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  12. Photographs ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  13. Photographs(cont.) ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  14. Photographs(cont.) ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  15. Major Specifications ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  16. Major Specifications(cont.) • Biasing voltage of roughly 150 mV applied to the membrane and the tip. • 1.5 nA current • V- of Op-Amp must match V+ ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  17. Limitations • High Cost • Variations in control voltage over time • Susceptible to Ambient Temperature Fluctuations • Low Frequency Noise ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  18. Advantages • Higher resistance to radiation • Better performance • Wider temperature range • Potential for fabrication of arrays • Can be miniaturized without loss in performance http://design.stanford.edu/SMSSL/TunnelingSensors/IR/IRApplication.html ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  19. Applied Designs ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  20. Applied Designs(cont.) ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  21. Suppliers • Jameco • Digikey Coperation • Jet Propulsion Laboratory ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

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