IR array sensors boast improved accuracy

27th July 2016
Mick Elliott

The second generation of Grid-EYE infrared (IR) array sensors from Panasonic is now being shipped by Mouser |Electronics. The sensors are fully compatible with first generation Grid-EYE sensors, and feature improved accuracy through an updated Noise Equivalent Temperature Difference (NETD) of 0.16 degrees Celsius at 10Hz and 0.05 degrees Celsius at 1 Hz with detection distance up to 7 meters.

The IR array sensors integrate a more sensitive MEMS sensor chip, a digital ASIC (I2C interface), and a silicon lens in a small 11.6mm × 8mm × 4.3mm package — approximately 70 percent smaller than similar products.

The parts feature 64 thermopile elements in an 8×8 grid format that detect absolute surface temperature without any contact.

Unlike conventional sensors, Grid-EYE uses a patented 60-degree silicon lens etched out of a silicon wafer, which, at less than 0.3mm, is said to be the smallest available lens in the market.

The sensors provide thermal images by measuring actual temperature and temperature gradients, and they enable detection of multiple persons, identification of positions and direction of movement, almost independent of ambient light conditions without disturbing privacy as with conventional cameras.

The contactless sensors enable high-performance measurements for safety, household appliances, medical systems, lighting control, industrial controls, and many other applications.

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