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Optical sensors boost gesture recognition, UV protection

Posted: 21 Jan 2016 ?? ?Print Version ?Bookmark and Share

Keywords:Silicon Labs? gesture recognition? UV? sensor? proximity?

Silicon Labs has rolled out the door what it describes as its next-generation optical sensors that can be used to protect consumers from the harmful effects of ultraviolet (UV) radiation and to develop novel touchless user interfaces that make use of high-performance proximity sensing and gesture recognition. According to the company, the Si1133 optical sensor gives a cost-effective solution for adding highly accurate UV index measurement capabilities to various sports equipment and outdoor lifestyle products, while the Si1153 ambient light sensor is optimised for operation in bright daylight conditions and extended range, allowing it to be used for gesture control and proximity detection applications in outdoor scenarios.

The Si1133 sensor enables accurate measurement of UV index levels to help gauge the sun's intensity and prevent skin damage. The Si1133 sensor can be incorporated easily and economically into a range of cost-sensitive outdoor recreation products such as sports and fitness wearables, backpacks, bicycle helmets, sunglasses, beach/patio furniture and sun lotion packaging. Products equipped with the Si1133 sensor help enable consumers to monitor their UV exposure and safely maximise their time spent outdoors. The Si1133 UV sensor provides an output, via its I2C serial interface, that directly corresponds to the digital UV index defined by the World Health Organisation. The Si1133 device also senses ambient light levels, which conveniently allows for automatic brightness adjustment of associated output displays.

Si1133 block diagram

Si1133 block diagram

The Si1133 UV index sensor claims to offer exceptional UV measurement accuracy of ±1.5 on the UV scale; ambient light sensing supporting The Si1153 sensor promises to deliver significant performance improvements for proximity sensing and gesture recognition in daylight conditions. The sensors can be used outdoors in high ambient light and over an extended range of up to two metres. The Si1153 sensors are geared for gesture-based operation of automotive infotainment systems, bicycle computers and other outdoor sports equipment, making it easier and safer for consumers to control electronic devices without taking their eyes off the road or tasks at hand. The sensors are also a good fit for ATMs, point-of-sale (POS) terminals, door entry systems, and other proximity sensing applications requiring both extended range and exceptional daylight performance.

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