Yoomak, Suntiti

Loading...
Thumbnail Image
Preferred name
Yoomak, Suntiti
Main Affiliation
Email
suntiti.yo@kmitl.ac.th

Settings

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Development of public lighting system with smart lighting control systems and internet of thing (IoT) technologies for smart city
    (2023-11-01)
    Chiradeja, Pathomthat
    ;
    Yoomak, Suntiti
    This study proposes the design and development of public light systems integrated with Internet of Things (IoT) applications for smart cities. Smart public lighting systems are designed using LED light sources in combination with a controller based on light intensity and motion sensors to control the brightness in working areas as per standard requirements. The control of smart public lighting systems is designed to operate in three modes: manual, scheduled, and auto modes, which are tested and compared in terms of lighting and power quality. Other functions of IoT, such as air pollution detection, security system-based video surveillance, and warning systems for flood disasters, are integrated into smart public lighting systems. A prototype of the designed smart public lighting system is presented in this paper. The parameters of average illuminance, overall uniformity, and threshold increment were implemented using DIALux software to optimise the luminaire spacing. The results showed that the goal of energy saving could be achieved using the auto mode. Although the automatic mode caused current harmonic distortion to the electrical grid, the harmonic value was less than the specified standard. Furthermore, the precision of IoT system operation was dependent on environmental variations and the reliability of wireless network technology.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Optimal tunnel lighting design in aspect of lighting quality and energy performance
    (2023-01-01)
    Chiradeja, Pathomthat
    ;
    Yoomak, Suntiti
    The lighting quality and energy performance of tunnel lighting systems based on different tunnel lighting designs are investigated to identify the optimal tunnel lighting design. Furthermore, the lighting qualities of various mounting heights and luminaire spacing are discussed based on different tunnel lighting parameters. Thereafter, the luminaire spacing is optimized for various road widths and luminaire power. Finally, the effects of the surface reflectance of the wall, ceiling, and road are compared in terms of the lighting quality and energy performance. The results indicate that the mounting patterns have a significant effect on the average luminance in the single-row arrangement. A symmetrical system with ceiling mounting can provide remarkable overall and longitudinal uniformities. Reducing the mounting height from 7 m to 5.5 m results in greater average luminance and better TI of about 11 % and 45 % respectively, but the overall and longitudinal uniformities are degraded by 20 % − 30 % and 30 % − 45 % respectively. In addition, reducing the distance between the luminaires from 30 m to 10 m improves the total tunnel lighting quality, i.e., 67 % of average luminance, 55 % of overall uniformity, 75 % of longitudinal uniformity, and 60 % of TI. In addition, the road, wall, and ceiling surface reflectance have a dominant effect on the lighting quality. A tunnel surface with low reflectance degrades the lighting quality, resulting in minimum luminaire spacing and poor energy efficiency.