Shortly after the discovery of the relationship between radiation and the heat given off by black bodies, infrared detectors were patented as a way to predict temperature via non-contact instrumentation. ![]() The most significant distinction is that thermal cameras detect and filter light such that only the infrared region of the electromagnetic spectrum is recorded, not the visible region. Thermal cameras are similar to standard cameras in that they use light to record images. ![]() This tutorial is meant as the first in a series of heat transfer analyses in electronics thermal management using the AMG8833. The approximate error of the sensor over its operable range is 2.5☌, making is particularly useful for applications with larger temperature fluctuations. A real-time infrared camera (IR camera) was introduced as a way of monitoring temperature for applications in person counting, heat transfer of electronics, indoor comfort monitoring, industrial non-contact temperature measurement, and other applications where multi-point temperature monitoring may be useful. The temperature approximation is outputted at a resolution of 0.25☌ over a range of 0☌ to 80☌. ![]() ![]() The module is wired to a Raspberry Pi 4 computer and communicates over the I2C bus at 400kHz to send temperature from all 64 pixels at a selectable rate of 1-10 samples per second. The AMG8833 infrared thermopile array is a 64-pixel (8x8) detector that approximates temperature from radiative bodies.
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