Thermopile array sensor uses IR to detect temperature

Panasonic Automotive & Industrial has launched its first SMT thermopile array sensor. Grid-EYE features 64 thermopile elements in an 8×8 grid format that detect temperatures and temperature gradients by infrared radiation, providing thermal images. It is possible to detect multiple people and identify positions and direction of movement.

The built-in silicon lens provides a viewing angle of 60°, and measurement values can be read out via I²C interface in 1 or 10 frames per second. The interrupt signal output delivers a quick response to time-critical events or additional energy saving capabilities in stand-by mode, offering a high degree of flexibility.

Measuring 11.6×4.3×8.0mm, Grid-EYE arrays have an operating voltage of 3.3 or 5V and a typical current consumption of 4.5mA in normal mode, 0.8mA in stand-by mode and 0.2mA in sleep mode. Object temperature range is 0 to +80°C for the high gain amplification version and -20 to +100°C with low gain. Overall Temperature accuracy is ±2.5°C with an NETD (Noise Equivalent Temperature Difference) of ±0.5°C, depending on P/N.

Compared to single element thermopile sensors and pyro-electric detectors, Grid-EYE sensors offers extended possibilities for detecting persons and objects, enabling advanced applications.

Applications include digital signage, security, lighting control, kiosk, ATM, medical imaging, automatic doors and people counting.

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