Ambient light sensor focuses on intelligent daylight harvesting for commercial lighting
April 16, 2012 // Paul Buckley
Austriamicrosystems has introduced at the Light+Building exhibition in Frankfurt, Germany, the companyís TSL4531 ambient light sensor device family, which enables daylight harvesting for intelligent lighting systems and luminaires.
The sensor family – developed by TAOS, the leading global supplier of intelligent light sensors acquired by austriamicrosystems in 2011 – offers a wide sensitivity range from 3 lux to 220,000 lux, preventing saturation even in direct sunlightwhile implementing a photopic response model that spectrally matches light perception in the human eye.
The TSL4531 ambient light sensor provides a simple, direct lux output and a 16-bit digital interface. Sophisticated filters automatically reject the 50-60 Hz ripple typically produced by a building’s fluorescent lighting systems, enabling the sensed light levels to more accurately measure the daylight that is entering the building.
Daylight harvesting is the next major step in the development of integrated lighting systems, enabling luminaires to dim in response to the amount of outside light that is entering a building through windows or skylights. By supplementing the working space with only the amount of light needed to maintain a uniformly lit environment, energy savings of 30% or more can be realized when compared to existing installations which do not respond to changes in ambient light.
Being fully aware of the lit environment also allows optimization that extends beyond energy savings. In integrated building management and control systems, the combination of proximity/motion and light sensing provides an abundance of data concerning the interior environment. Additionally, daylight sensing/harvesting combined with precise control mechanisms enable the lighting system to deliver not just the needed amount of light, but also offers the ability to tune the type of light to suit the activity and users in a particular space. Environmentally aware, decision-directed, multi-sensor networks and optimized light will enhance not only the productivity of the built space, but also worker and group productivity, as well as increasing the health and well-being of individuals.
The TSL4531 features a direct lux output with a wide dynamic range of 3 lux to 220,000 lux and approximates the human eye’s spectral response in diverse lighting conditions.
The device, which is packaged in a 2mm x 2mm ChipLED, also features a low active current of 110 µA typical with a power down mode of 2.2 µA typical.
The TSL4531 ambient light sensor IC is available now in volume production.
Visit austriamicrosystems at www.austriamicrosystems.com
Report: Abu Dhabi holding talks over GloFo sale
November 25, 2015
Abu Dhabi sovereign wealth fund Mubadala Development Co. has held talks with potential buyers for all or part of Globalfoundries ...
InvenSense to add PUF security to sensors
Flexible sensor detects multiple ions in fluids
Microsemi sees off Skyworks to win PMC-Sierra
Starting all over again on plastic: ARM
From electronics to maths and money madness
November 23, 2015
Dennis Feucht discusses different infinities, the madness of George Cantor and what can be learned about the irrational exuberance ...
Analog IC market growth set to slow
Volkswagen deploys data glasses in series production
Startup CircuitSeed wants to be the ARM of analogue
- Battery Size Matters
- Software-Defined Radio Handbook - 11th edition
- Multichemistry Buck Battery Charger Controller
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
InterviewCEO interview: InvenSense's Abdi on expanding MEMS horizons
InvenSense Inc. is a MEMS company that has epitomized a fabless approach to a sector that is still highly reliant on a thorough grasp of the manufacturing and packaging processes. We interviewed CEO Behrooz ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, FTDI Chip is giving away six MCU development board packages complete with a dedicated compiler (including a full integrated development environment).
Worth Euro 315 each, the packages include a credit card sized Clicker 2 board for the FT90X 32-bit MCU supplied alongside a powerful dedicated compiler from MikroElektronika.
MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.