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


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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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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


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


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


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


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


“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


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


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


Basic Working Principle Illustrated

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Typical Sample Configuration in Application

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Block Diagram of Tunneling IR Sensor

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Photographs

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Photographs(cont.)

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Photographs(cont.)

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Major Specifications

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


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


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


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


Applied Designs

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Applied Designs(cont.)

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


Suppliers

  • Jameco

  • Digikey Coperation

  • Jet Propulsion Laboratory

ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators


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