Imaging Concentration Profile Of Flowing Particles Using Combination Of Infra Red Emitter And Photoelectric Sensor

Rafidah, Mohamad Noor (2008) Imaging Concentration Profile Of Flowing Particles Using Combination Of Infra Red Emitter And Photoelectric Sensor. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The project describes the development of an optical tomography which consists of infra red sources and photodiode as the emitter-receiver element. The number of sensors used in the project is very limited and that gave a significant impact on the results obtained. However, the approach of the project is concentrated on the investigation of the performance and limitations of applying infra red sensors in process tomography. Numerous optical sources had been utilized based on the fact that it is the simplest method available up till now. The advantage of infra red sources compared to other optical sources was also discussed. The importance of identifying the sensor characteristics is crucial to make sure that it is the optimum instrument for our system. This report laid some important criteria that need to be considered upon applying infrared tomography system. The system developed are using 16 pairs of infra red sensors to interrogate a conveyor pipe having a size of 10 cm(width) x 10 cm(length) x 40 cm(high). The image reconstruction algorithm was built based on the Linear Back Projection Algorithm. A data acquisition system is used to collect and digitalize the analog signals from the sensor system which is manipulated by a personal computer in real-time mode. Several experiments with differences of cube size had been carried out to evaluate and analyze the result changes. Experiments had been carried out to evaluate the results for receiver circuit. The results obtained were analyzed individually and discussed at the end of the report. Some suggestions were drawn which can be considered in order to improve the system performance evaluation and future work.

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