Nur Hafizah Ghazali
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Nur Hafizah Ghazali
Official Name
Nur Hafizah Ghazali, Ghazali
Alternative Name
Ghazali, Nur Hafizah
Ghazali, N. H.
Ghazali, N.
Main Affiliation
Scopus Author ID
36104136600

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  • Publication
    Design and analysis of small scale oyster mushroom cultivation
    ( 2024-02-08)
    Zahereel Ishwar Abdul Khalib
    ;
    Nur Hafizah Ghazali
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    ;
    Tai W.J.
    ;
    Letchumanan N.
    ;
    Azman N.F.F.
    ;
    Rodhi M.N.Q.
    Cultivators that grow oyster mushrooms keep failing due to a of lack control in temperature, humidity, soil moisture, and concentration of carbon dioxide. In order to grow great oyster mushrooms and avoid crop failure, the temperature must be between 22°C to 28°C and the relative humidity must be between 85% to 90%. The concentration of carbon dioxide (CO2) needs to be controlled below 800 during its growth phase. Failure to meet those parameters will result in the mushroom drying out, slowing growth, or stopping. As a result, oyster mushroom cultivators will require a system that can control the surrounding temperature and humidity, soil moisture, and concentration of CO2 conditions in order to produce good-quality oyster mushrooms. An automated environmental control system is constructed to handle the problem. In this system, by means of a feedback control loop system that monitors and activates the actuators when necessary, promising results of the oyster mushroom cultivation system are produced and analyzed.
      1
  • Publication
    Design of smart assist device for the visually impaired
    ( 2024-02-08)
    Zahereel Ishwar Abdul Khalib
    ;
    Nur Hafizah Ghazali
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    ;
    Salimin H.A.M.
    Vision impaired individuals suffer from the lack of surrounding information which makes moving around very hard for them. In this work, a smart belt is designed to assist the blind in detecting obstacles and holes in front of them. Upon detection, the smart belt will notify the user by means of a textual audio message. The device utilizes a Raspberry Pie single-board computer as well as two ultrasonic sensors as the main component. Test results indicate that the system manages to provide accurate measurement of the distance to the obstacles with +- 1cm error. The system has been designed to cater gait movement as well as the variability of flat surface. This is important to avoid false positive and false negative alarm to the user. Using the belt is very convenient as compared to the white stick. It is easy to wear on the waist and once activated the device shall auto-calibrate its distance to the ground before obstacle/hole detection mode is activated automatically a few seconds later.
      1