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Demystifying Highly-Accurate Thermopile IR Sensors

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Demystifying Highly-Accurate Thermopile IR Sensors

Panasonic has revealed new small thermopile IR sensors which can detect moving and motionless people and objects with higher precision and higher accuracy compared to conventional products.

The new Grid-EYE sensors have higher accuracy, increased detection distance (from 5m up to 7m) and lower NETD (Noise Equivalent Temperature Difference) compared to the firm’s existing sensors.

The sensors combine a more sensitive MEMS sensor chip, a digital ASIC (I2C interface) and a silicon lens in an 8×8 grid format. The 64 thermopile elements  can measure temperature of the entire specified area without any contact, contrary to conventional thermal sensors that only measure temperature of a certain point-of-contact.

The 64 pixels yield accurate temperature measurement over a viewing angle of 60° provided by a silicon lens. The I²C interface enables temperature measurements at speeds of 1 or 10 frames/sec.

Both high gain types (AMG8833 and AMG8834) and low gain types (AMG8853 and AMG8854) are available which feature an improved NETD (Noise Equivalent Temperature Difference) of 0.16°C at 10Hz and of 0.05°C at 1 Hz.

The 60° silicon lens is less than 0.3mm height, the smallest available lens in the market, allowing the sensor size to be reduced to only 11.6 x 8 x 4.3mm, which is around 70% smaller in size than competitor products, according to the firm.

For more information, view the full Press release.

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