Chong Chia Hsing

Diselectric Characterisation of Foamed Concrete for Density and Compressive Strength Evaluation

May 2018 - May 2019

This thesis reports on the dielectric characterization of the lightweight foamed concrete and the relation of the three variables: density, dielectric constant, and compressive strength. The mathematical model used for the dielectric characterization of the concrete is Jonscher model and the goodness of fit of this model with the measurement is high with the R-square value reaching as high as 0.9 and above. The relationship between density and dielectric constant is simple linear equation. On the other hand, the mathematical relation between density with compressive strength and dielectric constant with compressive strength show a power-law relation with the power value reaching 3.89 and 2.4 respectively. It should worth noting that this is a cursory study for its related field and further exploration should focus on the development in the variety of mathematical models that could be used in the dielectric constant conversion as the model used in this study is capacitance model only. In addition, the software or programming of the instrument could also be improved with the transferring of control to computer. Lastly, the other structural variables of lightweight foamed concrete could be included in the analysis.

LONGI Solar Cell Manufacturing Plant Phase 3 SCADA Development

Dec 2019 – Jan 2020

Creation of SCADA for the Gas Detectors System (GDS), Gas Management System (GMS), and Chemical Management System (CMS) with the use of Wonderware Intouch 2017. The GDS and GMS are build into one SCADA program while CMS is build as its own SCADA program and host on its own Local PC.

GDS consists of graphical display for all the gas detectors (Honeywell Midas) and data logging for all its process values. On the other hand, GMS displays all the information obtained from the equipment Valve Manifold Box (VMB), Valve Distribution Box (VDB), and Bulk Specialty Gas System (BSGS) through Modbus TCP communication. SCADA for GDS could issues maintenance and set-point value to the gas detector while command for GMS is remote shutdown trigger.

SCADA for CMS only serves to monitor the statuses and alarms reporting for the information obtained from the CMS (third party equipment). The information are obtained using the Modbus TCP and graphics are replicated from the local control panel to the SCADA system.

Air Products Gas Detector Control Panel

Sep 2020

Programming of Zelio Logic Smart Relay for controlling the alarm reporting responses at the local control panel. The responses are alarm indicator light, revolving light, buzzer, and flashing light. 5 possible alarms condition and 2 categories of alarms which are non-critical and critical alarms.

ALSg J3 Helium Trans-filling System

Oct 2020 – Apr 2021

The creation of a quality control system for gases. Gases are pass through the Servomex analyzers and AGC NovaCHROM for the quality testing. The results of the analysis are recorded accordingly. Siemens SIMATIC PLC (S7-1200) and HMI (MTP1000) are used for the system.

Other Creators

- Responsible for the HMI graphical interface programming.

Merdeka 118 District Cooling System

Personal Project 001: Website Development