Automated quantification system for vision through polymer-dispersed liquid crystal double-glazed windows: Circuit implementation

Abstract

Polymer-dispersed liquid crystal automated quantification system for vision through polymer-dispersed liquid crystal double-glazed windows: Circuit implementation (PDLC)-windows played an essential role in providing a visual comfort for occupants in commercial buildings recently. PDLC windows adjust the visible transparency of the glazing to control the daylight accessed to internal environments. A former study proposed an algorithm to quantify the vision through the PDLC glazing in terms of image contrast. The quantification algorithm determines the minimum level of transparency that maintains a comfortable vision through the window. This study introduced the implementation of a real-time automated system that achieves the vision quantification process. Firstly, system on-chip was utilised to realise the quantification algorithm, including contrast estimation. Secondly, the contrast determination action was re-implemented using MATLAB, Cortex-A9 microcontroller, and Cyclone V field programmable gate array field programmable gate array-chip. The implemented systems were evaluated based on the latency, throughput, power consumption, and cost.