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Novel sensor solution able to control LEDs

Posted: 25 Apr 2016 ?? ?Print Version ?Bookmark and Share

Keywords:MAZeT? sensor? LED? automotive? medical?

MAZeT has developed what it describes as an innovative sensor solution for controlling LEDs. The company's MTCS-CDCAF colour sensor is a fully integrated sensor chip in MAZeT's JENCOLOR line, the first to include a true-colour filter function, integrated signal amplification based on charge-to-digital conversion, and an on-chip temperature sensor.

A LED's colour or wavelength typically changes with temperature variation. As temperature increases, so does the wavelength of the colour. Better thermal management allows more forward current to be applied to the LED, which translates to more light or fewer LEDs required for the desired light output. Maintaining a cooler assembly at an equivalent power equates to more light per die.

MTCS-CDCAF colour sensor

The MAZeT sensor chip works by measuring the colour coordinates of light as XYZ signals in the CIE 1931 colour space fast, directly, and precisely no matter the interference present. It uses interference filters that enable it to be reliable even over 100C while maintaining sensitivity spanning its lifecycle. The sensor also measures colour brightness, frequency and flicker.

The areas of lighting the sensor solution targets include LED lights, LED backlight systems for monitors, architectural lighting, automotive and aircraft, in medical and technical lighting, and displays.

Based on these features, it is particularly suited to measuring and regulating LEDs while compensating for the interference that typically challenge them. The sensors are complemented by wireless transmission technology, software libraries, test boards and operating software for Windows and Android.

RGB light colour control

Figure 1: RGB light colour control

MAZeT will showcase a variety of LED control solutions that rely on mobile devices to precisely control colour, colour temperature and brightness, without allowing temperature, aging, or outside influences to affect the visible colour. Multiple lightboxes can be controlled in parallel based on the type of wireless connection used. MAZeT offers the electronics and control system to luminaire manufacturers and system integrators as series-produced OEM modules.

- Carolyn Mathas
??EDN





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