Lighting systems

A lighting control system is an intelligent network based lighting control solution that incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces.

A lighting control system is an intelligent network based lighting control solution that incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces.
Smart LED-based lighting systems require digital control using programmable microcontroller-based architectures that enable increased levels of intelligence and design flexibility, as well as efficient and cost-effective control of the luminaire power supply. Such architectures are able to support varying LED types and string lengths/numbers, and unique power stage requirements, generally with no major hardware changes. Most importantly, programmability also enables more advanced lighting control (sensing functions, remote connectivity, timing schedules, etc.), and likewise, this flexibility afforded by digital control means that a single controller can support a wider range of products to help lower overall system costs.

Smart LED-based lighting systems
By employing a flexible digital approach, it is possible for a single microcontroller, with sufficient performance, optimized power-control peripherals and robust communications ports, to provide a programmable platform that controls the three main stages of a smart LED-based lighting system; i.e. power conversion (precise/flexible control of AC rectification, power factor correction [PFC] and DC/DC conversion), LED control, and communications (Figure 1). This avoids the need for separate controllers for each stage as is necessary when using a fixed-function, analogue approach. This high level of integration reduces system complexity, and the component cost of a lighting unit power supply.