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  • 1
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    Implementing a Microcontroller Watchdog with a Field-Programmable Gate Array (FPGA) (2013)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: Reliability is crucial to safety. Redundancy of important system components greatly enhances reliability and hence safety. Field-Programmable Gate Arrays (FPGAs) are useful for monitoring systems and handling the logic necessary to keep them running with minimal interruption when individual components fail. A complete microcontroller watchdog with logic for failure handling can be implemented in a hardware description language (HDL.). HDL-based designs are vendor-independent and can be used on many FPGAs with low overhead.
    Keywords: Electronics and Electrical Engineering
    Type: KSC-2013-091R , KSC-2013-091
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Optical Energy Transfer and Conversion System (2018)
    In:  CASI
    Details
    Publication Date: 2019-08-26
    Description: An optical energy transfer and conversion system comprising a fiber spooler and an electrical power extraction subsystem connected to the spooler with an optical waveguide. Optical energy is generated at and transferred from a base station through fiber wrapped around the spooler, and ultimately to the power extraction system at a remote mobility platform for conversion to another form of energy. The fiber spooler may reside on the remote mobility platform which may be a vehicle, or apparatus that is either self-propelled or is carried by a secondary mobility platform either on land, under the sea, in the air or in space.
    Keywords: Electronics and Electrical Engineering
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Optical Energy Transfer and Conversion System (2015)
    In:  CASI
    Details
    Publication Date: 2019-08-26
    Description: An optical power transfer system comprising a fiber spooler, a fiber optic rotary joint mechanically connected to the fiber spooler, and an electrical power extraction subsystem connected to the fiber optic rotary joint with an optical waveguide. Optical energy is generated at and transferred from a base station through fiber wrapped around the spooler, through the rotary joint, and ultimately to the power extraction system at a remote mobility platform for conversion to another form of energy.
    Keywords: Electronics and Electrical Engineering
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Optical Power Transfer System for Powering a Remote Mobility System for Multiple Missions (2016)
    In:  CASI
    Details
    Publication Date: 2019-08-26
    Description: An optical power transfer system for powering a remote mobility system for multiple missions comprising a high power source and a chilling station connected to a laser source. The laser source transmits a high optical energy to a beam switch assembly via an optical fiber. The beam switch assembly is optically connected to actively cooled fiber spoolers. Docking stations are adapted for securing the fiber spoolers until alternatively ready for use by a remote mobility system. The remote mobility system is optically connected to the fiber spoolers and has a receiving port adapted for securing the fiber spoolers thereon. The fiber spooler transmits the optical energy to a power conversion system which converts the optical energy received to another usable form of energy. More than one power source may be used where the remote mobility system transfers from one source to another while maintaining an operational radius to each source.
    Keywords: Electronics and Electrical Engineering
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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