Design of whole-sky imager

• Main Author: Wong, Chen Li
• Other Authors: Lee Yee Hui
• Format: Final Year Project
• Language: English
• Published: 2019
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: http://hdl.handle.net/10356/78208
• Institution: Nanyang Technological University

The Whole Sky Imagers (WSI) is a ground-based, skyward-angled camera that captures images, providing data on cloud coverages and solar positions over a localized area. The WSI is made up of industrial camera operated by a single board embedded system computer. The entire system is encased in a 3-D designed box that ensures that it is well-protected by external environmental factors. There were previous WSI models, specifically Wide-Angle High-Resolution Sky Imaging System (WAHRSIS) versions I to V. For last year, it was the development of WAHRSIS VI, WAHRSIS VI’s deployment was successful and was able to deliver the main function of a WSI. However, after studying of the codes, there were some issues undocumented. Some of the issues include the use of manual and automatic modes depending on the time of the day. As well as inaccurate details of metadata for the images generated. Therefore, this paper aims to provide documentation of the shortcomings of the current WAHRSIS VI and the modifications made to improve its performance. Apart from making changes to the Python scripts that are running the system, the interior shelving of the WAHRSIS VI case was also revised via 3-D printing.