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Radiation detector circuit

Radiation detector circuit / Tee Kian Siang
Tesis ini memberi tumpuan kepada membina litar pengesan sinaran bersamasama dengan mikropengawal Arduino Uno. Pada masa kini, radiasi biasanya digunakan dalam beberapa bidang seperti bidang perubatan dan bidang komunikasi. Walau bagaimanapun, radiasi masih berbahaya bagi kita semua jika ia adalah dalam dos yang besar. Oleh itu, litar pengesan sinaran dibina untuk mengesan kewujudan radiasi. Dalam projek ini, AM-241 akan digunakan sebagai sumber radiasi. AM-241 akan mengeluarkan radiasi terutamanya alfa dan fotodiod SiC akan digunakan sebagai pengesan radiasi. Untuk mencapai kejayaan projek ini, litar transimpedance penguat dibina sebagai antara muka antara Arduino Uno mikropengawal dan fotodiod SiC. Selepas itu, voltan keluaran dimasukkan ke mana-mana pin analog daripada mikropengawal Arduino Uno. Arduino Uno mikropengawal diprogramkan untuk mengira nilai seperti voltan keluaran dan arus melalui fotodiod SiC. Semua nilai ini dipaparkan pada LCD dan juga berbanding dengan nilai-nilai yang diukur dengan menggunakan multimeter. Perbezaan antara kedua-dua telah dianalisis dan hampir tidak ada perbezaan. Prestasi fotodiod SiC dan litar transimpedance penguat juga telah dianalisis. Sebab-sebab yang mungkin menyebabkan Am-241 sinaran alfa tidak dapat dikesan oleh fotodiod SiC telah dikemukakan. Namun, sebab utama adalah kekuatan radiasi yang lemah daripada sinaran alfa Am-241. _______________________________________________________________________________________________________ This thesis is focused on building a radiation detector circuit along with the Arduino Uno microcontroller. Nowadays, radiation is commonly being used in several fields such as medical field and communication field. However, radiation is still harmful to all of us if it is in a large dose. Therefore, a radiation detector circuit is built in order to detect the existence of radiation. In this project, AM-241 is used as the radiation source. AM-241 emits mainly alpha radiation and the SiC photodiode is used as the radiation sensor. To deal with this project, a transimpedance amplifier circuit is built as the interface between Arduino Uno microcontroller and the SiC photodiode. Then, the output voltage is fed into any analog pin of the Arduino Uno microcontroller. The Arduino Uno microcontroller is programmed to calculate the values like the output voltage and the current passing through the SiC photodiode. All these values are displayed on the LCD and also compared to the values measured by using the multimeter. The difference between both has been analyzed and there is almost no difference. The performances of the SiC photodiode and the transimpedance amplifier circuit have also been analyzed. The possible reasons of why Am-241 alpha radiation is undetectable by the SiC photodiode have been revealed. Yet, the main reason is that of the weak strength of the Am-241 alpha radiation.
Contributor(s):
Tee Kian Siang - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007125
Barcode : 00003107003
Language:
English
Subject Keywords:
radiation detector circuit; communication field; SiC photodiode
First presented to the public:
6/1/2017
Original Publication Date:
4/23/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 86
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-23 15:41:47.957
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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