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Title:VISOKO ZANESLJIV MODUL ZA MERJENJE ABSORBIRANE DOZE Z ZAPOREDNIM VODILOM
Authors:ID Gonzales, Lorenzo (Author)
ID Kramberger, Iztok (Mentor) More about this mentor... New window
Files:.pdf UN_Gonzales_Lorenzo_2018.pdf (1,24 MB)
MD5: 58542D67B046BC535B016F2E08A769F3
PID: 20.500.12556/dkum/e4df4536-6145-4c01-be32-72ad048ac2d4
 
Language:Slovenian
Work type:Diploma project paper
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V zaključnem delu je predstavljen visoko zanesljiv modul za merjenje absorbirane doze primeren za uporabo na nano-satelitih. Osnova za merjenje absorbirane doze je merjenje ničelnega toka skozi PIN fotodiodo. Modul je namenjen merjenju izpostavljenosti na radiacijo v vesolju. Meritve lahko uporabimo za validacijo vzdržnosti sistemov v vesolju glede na absorbirane doze ali pa za raziskovalne namene. Ker je modul razvit za preprosto integracijo na podsistem satelita, so za komunikacijo z nadzornim sistemom na voljo različna zaporedna vodila, tudi sicer priklop modula ni zahteven. Modul sestoji iz analognega merilnega dela in digitalnega dela za zajem ter obdelavo podatkov. Sestava modula strmi k visoki zanesljivosti, ki jo zagotovimo s previdno izbranimi komercialnimi komponentami. Zaradi termalne odvisnosti analogne dela, je v vezje dodana temperaturna kompenzacijska stopnja. Prav tako je predstavljen tudi temperaturni kalibracijski postopek. Modul za merjenje izpostavljenosti na radiacijo je tudi umerjen z kalibriranim Cs-137 radiacijskim virom, s čimer zagotavljamo natančne meritve absorbirane doze. V sklopu zaključnega dela je predstavljena tudi integracija modula in različni načini izračuna totalne absorbirane doze, ki se spreminjajo glede na procesne zmožnosti sistema.
Keywords:Absorbirana doza, FPGA, Ionizirajoča radiacija, HDL, vgrajeni sistem
Place of publishing:Maribor
Publisher:[L. Gonzales]
Year of publishing:2018
PID:20.500.12556/DKUM-71710 New window
UDC:621.3
COBISS.SI-ID:22112278 New window
NUK URN:URN:SI:UM:DK:XPSQ9PXP
Publication date in DKUM:05.02.2019
Views:1469
Downloads:166
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:28.08.2018

Secondary language

Language:English
Title:FAULT TOLERANT TID MONITOR MODULE WITH SERIAL INTERFACE
Abstract:This final work presents a fault tolerant versatile TID (Total Ionizing Dose) monitor module based on an enclosed photodiode, appropriate for use on nanosatellite missions. The module is used for radiation exposure measurements, which can be used for TID validation or experimental purposes. As the module is designed to be easily integrated to a satellite subsystem, various serial interfaces are available and the module connections are highly simplified. The module’s design is developed using an analog measurement part and a digital data acquisition part. Further the design is faced towards an optimized and fault tolerant circuit, featuring COTS components. Due to the thermal dependency of analog circuitry, thermal compensation circuit is integrated and the temperature calibration procedure is presented. Additionally, the module is calibrated using a calibrated Cs-137 radiation source, ensuring valid dose rate measurements. The module’s integration to a supervising subsystem and various TID calculation techniques, appropriate for systems with different processing capabilities are also presented.
Keywords:TID, FPGA, Ionizing radiation, HDL, Embedded system


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