Authors (including presenting author) :
Mr Johnny LAW, Mr K S LEE, Mr Kyle LO, Ms Ada WONG
Affiliation :
Facilities Management Office, Kowloon Hospital
Keyword 3: :
Green Society
Keyword 5: :
Environmental Sustainability
Keyword 6: :
Optimization
Introduction :
The outdoor lighting systems of hospitals require regular monitoring and maintenance to ensure reliable illumination for safety, security, and operational continuity, especially in large campuses with diverse zones. Traditional manual patrols for inspecting streetlights involve significant manpower and can be inefficient, often leading to delayed fault detection and higher maintenance costs. Given the advanced features and remote capabilities of an outdoor LED condition monitoring system, integrating solar-hybrid LEDs with IoT-based monitoring provides a solution to enhance energy efficiency and reliability in healthcare facilities management. The utilization of this technology for condition monitoring aims to improve durability, reduce energy consumption, minimize manual interventions, and ensure consistent lighting performance across the hospital grounds, as well as to contribute to a greener society.
Objectives :
The objectives of this initiative are to enhance efficiency, reliability, and cost savings in outdoor lighting management, as well as ensuring seamless integration into the monitoring platform for real-time data tracking and fault detection, and eventually reaching the goal to successfully develop an implementation strategy to incorporate condition monitoring into existing lighting protocols. The system aims to achieve corporate green initiatives while contributing to a green environment.
Methodology :
The methodology employed a phased approach, beginning with needs assessment to identify applicable zones and usage scenarios, including 10 zones with 252 LED lighting units. This was followed by a literature review analyzing research and case studies in healthcare settings, emphasizing energy savings, fault monitoring, and integration benefits. Staff training and compliance involved collaboration with technical teams to ensure adherence to system guidelines for data interpretation and response protocols. Pilot testing assessed practical applications in selected zones, leading to phased full implementation focused on power switching. Finally, evaluation and monitoring included monthly reports tracking metrics such as energy consumption, fault response times, and maintenance savings.
Result & Outcome :
The condition monitoring system improves efficiency and reliability by eliminating manual patrols, enabling proactive repairs, and extending equipment lifespan, with features like ambient light-based activation and soft start enhancing durability and user comfort. It ensures effectiveness in diverse conditions by resisting environmental factors and voltage dips to prevent safety-impacting flickering, while flexible zoning strategies provide continuous, reliable lighting and support green initiatives. Environmentally, it achieves 90% electricity savings in summer time, yielding an annual 23-tonne carbon reduction (equivalent to the yearly consumption of 18 three-member households or the absorption by 1,030 trees), promoting a healthier planet for future generations.
