Conference Publications

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https://hdl.handle.net/20.500.14170/208

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Now showing 1 - 5 of 103
  • Publication
    Design and on-body evaluations of a low-cost wearable PIFA for on-body applications
    (IOP Publishing, 2020)
    Azadeh Ahmadihaji
    ;
    Hadi Aliakbarian
    ;
    Nordiana Mohamad Saaid
    ;
    Ping Jack Soh
    A flexible low profile textile antenna based on planar inverted-F antenna (PIFA) structure is presented in this paper. This topology has been chosen due to its design simplicity, relatively large bandwidth and the existence of a full rear ground plane, which shields against the effects of the body. The antenna topology which is designed on a 4 mm-thick felt substrate is presented. Conductive textile (Aaronia-shield) is applied as the antenna’s radiator and ground plane due to its light weight, low surface resistance and good conductivity. The antenna performance in free space and bent conditions in the proximity of human body are studied, followed by a numerical investigation on the influence of relative humidity on the textile antenna performance. The fabricated PIFA is assessed experimentally and is found to be in good agreements with the simulation results. Finally, the antenna is attached to a compact RF module and is evaluated on body in a practical environment. The wireless link quality is also evaluated in an indoor laboratory environment.
  • Publication
    Full reference image quality assessment algorithm based on Haar wavelet and edge perceptual similarity
    (IOP Publishing, 2020)
    F Mokhtar
    ;
    Ruzelita Ngadiran
    The research on image quality assessment (IQA) has been become a hot topic in image processing. Many studies show that HVS edge information plays crucial role when human perceive the quality of an image. The proposed metric is called HEPSI. The method from HaarPSI metric is combined with edge structural similarity and a contrast map is added for pooling the structural similarity map, Validation is taken by comparing HEPSI with the well-known state-of-the-art IQA metrics: PSNR, SSIM, MSSIM, FSIM and HaarPSI over the LIVE database. Experiment shows that HEPSI achieved better performance than other 5 IQA metrics.
  • Publication
    Automated detection of Printed Circuit Boards (PCB) defects by using machine learning in electronic manufacturing: current approaches
    (IOP Publishing, 2020)
    S. S. Zakaria
    ;
    Amiza Amir
    ;
    Naimah Yaakob
    ;
    S Nazemi
    The manufacturing of a printed circuit board in the SMT assembly line goes through multiple phases of automatic handling. To ensure the quality of the board and reduce the number of defects, inspection tasks such as solder paste inspection and automatic optical inspection are conducted. The inspection tasks are carried out at various phases of the assembly line. The paper aims to answer the questions of how machine learning technology can contribute for better PCB fault detection in the assembly line and at which parts of the assembly line this technology has been applied. The paper discusses the PCB defect detection by using machine learning and other approaches. The current research shows that PCB defect detection using machine learning are miniscule. Early detection is still unexplored and experimented in the industry.
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  • Publication
    Textile Bowtie patch antenna for potential RF energy harvesting application at GSM 1800
    (IOP Publishing, 2020)
    Nordiana Mohamad Saaid
    ;
    Soh Ping Jack
    ;
    S A Baharuddin
    ;
    H M A Said
    ;
    M K Abdi
    ;
    A Hassan Hirey
    ;
    M F Che Mansor
    This paper presents the design and development of a textile bowtie patch antenna for potential RF energy harvesting application using the Global System for Mobile Communication (GSM 1800) band. The size of the antenna is 80 mm × 40 mm, and is designed on a 6 mm thick Felt textile as the substrate and 0.08 mm-thick ShieldIt as its conducting material. The simulated and measured reflection coefficients justified that the bowtie antenna can be used for RF energy harvesting application at 1.8 GHz. This antenna has realized gain ranging from 2.56 dB to 2.55 dB and a total antenna efficiency of -4.3 dB.
  • Publication
    Personal shopper – mobile phone applications
    (IOP Publishing, 2020)
    F N Zamani
    ;
    Saidatul Norlyana Azemi
    ;
    Amiza Amir
    ;
    Naimah Yaakob
    This project is focused on the development of personal shopper mobile phone application. The purpose of this system is to help part-timer and full-timer personal shoppers gather in one platform and also for the customer to hire a personal shopper to buys their items. This project will implement a rating system, give reward to the customer, accept customer requests, view customer requested details and contact the customer through Whatsapp application. This application is very flexible for the customer and personal shopper where the customer can become a personal shopper and vice versa. This entire project is developed according to software engineering methodology with the waterfall model. The tool used to create this project is Android Studio with Java, PHP, XAMPP Server, and MySQL database.
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