Data acquisition process in optical tomography : Signal sample and hold circuit

Rahim, Ruzairi Abdul; Leong, L. C.; Chan, Kok San; Pang, Jon Fea

doi:10.1109/ccsp.2005.4977187

Cited by 4 publications

(2 citation statements)

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“…Previous optical tomography using LED and optical fibers, cannot produce high resolution measurement due to the size of the sensors. 6 In the same research field on optical tomography conducted by Mariani, CCD image sensor although promised high resolution image, it require external circuitry for data digitization with two power supplies. 5 CMOS linear image sensor can offer more excellent imaging performance than that of CCD when it provides more on-chip circuit integration such as built-in analog to digital converters (ADCs) and much lower power consumption.…”

Section: 20 Problem Statementmentioning

confidence: 99%

Design of the Optical Tomography System for Four Projections CMOS Linear Image Sensor

et al. 2013

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The main purpose of this study is to design the optical tomography system for four projections complementary metal–oxide–semiconductor (CMOS) linear image sensor. This system includes the development of suitable driver for the operation of CMOS S10077 linear image sensor, measurement section and data acquisition system. The CMOS linear image sensor S10077 is configured around a flow pipe with an octagonal–shaped measurement section. This image sensor scans image of object inside the pipe from four different projections angle. When light hit the object, shadow will cast on the sensor surface. The output signal is obtained based on the light intensity projected to the sensor. Microcontroller PIC 18F4620 is used as a driver to enable the operation of CMOS linear image sensor and microcontroller PIC 18F458 is used as a data acquisition circuit for optical tomography system. Microcontroller retrieves serial data from the CMOS linear image sensor and sends it to a PC for further work in image reconstruction.

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Section: 20 Problem Statementmentioning

confidence: 99%

Design of the Optical Tomography System for Four Projections CMOS Linear Image Sensor

et al. 2013

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“…PIC16F84A was used in data collecting card in order to produce related signals both control signal sampling and holding circuits. Thanks to the combination of circuit of signal sampling and holding and the microcontroller, analog signals may be effectively transferred to data collecting system [2]. In a study carried out by Cosmanescu et al, a biological computation amplifier and a portable and multifunctional data collecting device was designed and applied in order to amplify, filter, measure the electric signals (EMG and EKG) produced by the human body and wirelessly transferring it through Bluetooth.…”

Section: Introductionmentioning

confidence: 99%

The Designing of Data Acquisition Card through PIC18F4550 and an Interface Study

Terzioğlu

Herdem

Bal

2015

AMM

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Since automatic control is used in every field, there is almost no industrial application system which doesn’t employ the sensors. It makes correctly reading the data obtained from sensors in the system with sensors and transmitting this data into the computer more important. In this executed study, a design for an interface which can be easily used with a low cost data processing card and with flexible structure was performed. In the executed system, the PIC18F4550 microcontroller was used and data can be accurately read from 10 different channels. The data read from the designed data acquisition card was transferred into a computer interface program prepared in C# program using a USB and recorded into the database in the Microsoft Access program. The designed interface, the values of read signals and their graphs may be displayed on the screen. Thus, the interface screen may be used as both an indicator and oscilloscope screen.

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Precipitation and other propagation impairments effects at microwave and millimeter wave bands: a mini survey

Kotamraju

Kavya

2019

Acta Geophys.

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Data acquisition process in optical tomography : Signal sample and hold circuit

Cited by 4 publications

References 0 publications

Design of the Optical Tomography System for Four Projections CMOS Linear Image Sensor

Design of the Optical Tomography System for Four Projections CMOS Linear Image Sensor

The Designing of Data Acquisition Card through PIC18F4550 and an Interface Study

Precipitation and other propagation impairments effects at microwave and millimeter wave bands: a mini survey

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