Investigating Multiple Fan Beam Projection Technique using Optical Fibre Sensor in Process Tomography

Abstract

Secara umumnya, objektif projek ini adalah untuk mengimplimentasi teknik sinaran berbilang “fan beam” menggunakan penderia gentian optik dengan tujuan meningkatkan kadar perolehan data. Teknik sinaran berbilang “fan beam” dalam kes ini boleh didefinisikan sebagai membenarkan lebih daripada satu pemancar untuk memancarkan cahaya dalam suatu masa yang sama dengan menggunakan kaedah “switch–mode fan beam.” Kata kunci: Penderia gentian optik, tomografi optik fan–beam, teknik berbilang pemancar, kaedah switch–mode fan beam This paper investigates the acquisition rate for a multi–projection technique using optical fibre sensors for a fan beam optical tomography system. The multi–projection technique allows more than one emitter to project light at the same time. For the 32 pairs of sensors used, the 2–projection technique is being investigated whereby 16 sets of projections will complete one frame of light emission. Compared to the conventional single light projection technique used in switch–mode fan beam, multiple light projections technique has shown to be able to achieve a higher data acquisition rate. Key words: Optical fibre sensor, fan beam optical tomography, multi–projection technique, switch–mode fan beam method

Study of the Effect of Brightness After Penetration of Light from a Lens

“…Based on the diameter of the pipe, the length range is limited and the maximum range of the diameter pipe is 12 cm [8,30]. In this test, we use only a single light source and a single sensor to check the value captured by the sensor.…”

“…Researchers need to make sure that the height of the sensor (inside the light border) and the light source are in a straight line. The researchers need to take into consideration that the spot and the density of light are the same [7,8].…”

“…Other than this, the test could also include the expansion of the diameter of the light. The measurement distance is the same as before, being 12 cm [7,8]. The objective of this test is to confirm whether the diameter of the circle is maintained or increased.…”

“…Normally lenses are used to convert the properties of light, for example a lens can convert the angle of light, and so on. [7,8].…”

Measurement of the Content of Water Using Light Penetration

“…Based on observation, light can penetrate many types of materials and the brightness of the light can be reduced after penetrating an object. The value of the light when it passes through an object before exposure to the endpoint must also be considered [2,14,[20][21][22][23]. If the light value is low, then the light cannot pass through the subject and scanning cannot be undertaken.…”