Introduction
Infrared vision detects infrared radiation. Infrared (IR) sensors use that radiation and display it to show thermal readings.
Lab 5 consisted of using an infrared camera and documenting heat signatures. Using a sensor, we used it to detect infrared radiation from a mug of tea, can of Coca-Cola, someone standing behind glass on a door, and airplanes that we found on the ramp.
Methods
To conduct the lab, the IR sensor that was provided was used to take pictures of the items listed above. The purpose of the lab was to show the effects of infrared radiation and how it relates to its environment.
Discussion
For the mug, Figure 1 shows the infrared radiation from adding hot water into the mug.
Figure 1: The video shows the infrared radiation being transferred from the hot water to the mug, which is why it grows lighter, since a lighter color means more radiation.
While using the sensor, it was observed that the images/videos that we were creating did not have a high definition, which makes it harder to identify some of the items. The IR sensor we used was also equipped with an RGB lens, which can be combined with the IR lens to create an overlay to make it easier to identify objects. Figure 2 uses both lens, and it pictures the mug, Coca-Cola, and a stapler placed side by side.
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| Figure 2: The picture above shows the Coca-Cola can, stapler, and mug with the hot water. |
For IR radiation, any glass surfaces reflect that type of radiation, which is why we do not get sun burnt through windows, so that means anything behind the class cannot be seen. Figure 3 will show the same image with the IR sensor on and what it would look like without looking at IR.
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| Figure 3: The images shows the contrast of someone behind the glass of the door of IR to RGB. |
Below, Figure 4 will show an aircraft that was moving along the ramp. The heat from the jet engines will be obvious, but there is also one panel of the aircraft that gives off more IR radiation than all the rest. This is due to an image that was placed onto the aircraft.
Figure 4: The aircraft was in the process of taxing when recorded.
Conclusion
IR sensors are very helpful. In applications of needing to know how warm or how much IR radiation comes off of it of objects, the IR sensor could be very useful. By being given a sensor, it allowed the class to use it and figure out how to work it and gain an understanding of it. As the semester goes, there will be more applications for this technology for future labs.
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