Opto-Electronics


White-tuneable smart lighting manager

31 January 2017 Opto-Electronics

Lighting manufacturers designing with a new integrated white-tuneable smart lighting manager from ams can quickly integrate high-precision CCT, or Kelvin tuning, capabilities into their Internet of Things (IoT) smart lighting offerings.

The versatile architecture, which includes an I²C extension interface, positions the AS7221 to deliver IoT sensor hub platform capabilities for sensing functions such as air quality, temperature, occupancy and presence.

The AS7221 is equipped with an industry-first embedded tri-stimulus CIE XYZ colour sensor to enable precise colour sensing with direct mapping to the CIE 1931 colour space. This smart lighting manager is a fully integrated luminaire control system, compatible with standard 0-10 V inputs and enabled for IoT connectivity and network control through standard clients such as Bluetooth Smart, ZigBee or Wi-Fi, through a complete smart lighting command set. LED control for spectral tuning is implemented via direct PWM channel outputs, resulting in a high-precision solution that slashes development and integration time when compared with more bulky discrete component approaches.

The AS7221 is the first extension to ams’ recently announced Cognitive Lighting smart lighting manager family. It will be available in a 5 x 5 mm LGA package, for flexible integration into both luminaires and larger replacement lamps. The device provides precise colour point tuning, smoothly controlling CCT transitions between configured warm and cool white LED strings within a luminaire. In addition to the colour- and CCT-tuning functions, the AS7221 includes automatic configuration support for ams’ TSL4531 ambient light sensor for turnkey daylighting capabilities.

For more information contact Marian Ledgerwood, Future Electronics, +27 (0)21 421 8292, [email protected], www.futureelectronics.com



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