Timeline for How do modern microbolometer cameras measure absolute temperature of an object?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Dec 14, 2021 at 4:47 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
edited tags; edited title
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| Dec 14, 2021 at 2:06 | answer | added | Matt | timeline score: 1 | |
| Dec 14, 2021 at 0:11 | answer | added | Mitch Randall | timeline score: 1 | |
| Mar 5, 2020 at 19:00 | comment | added | probably_someone | The design question you need to ask yourself at this point is: "Do I actually need the absolute temperature, or do I only need to measure temperature differences?" If it's the latter, you actually mostly care about sensitivity to variations. And as long as the inaccuracy is consistent, you can always devise some sort of calibration if you do end up needing an absolute temperature. | |
| Mar 5, 2020 at 15:55 | comment | added | probably_someone | Interesting, thanks! I'll look at the datasheets later, but just based on the descriptions you gave, it looks like the metrics given by each device might not be directly comparable. In particular, "accuracy" and "sensitivity to variations" are very different; if a temperature measurement is consistently wrong by, say, 20 degrees, but a change in the source temperature of 0.1 degrees results in a change in the measured temperature of 0.1 degrees, then the measurement is only accurate to within 20 degrees, but is sensitive to variations of 0.1 degrees. | |
| Mar 5, 2020 at 15:17 | comment | added | confused | This one claims accuracy of 0.1C and full radiometric data. infraredcameras.com/wp-content/uploads/datasheets/… | |
| Mar 5, 2020 at 14:30 | comment | added | confused | Or even like this FLIR handheld camera. It's measuring temperature all over it's image area. docplayer.net/… | |
| Mar 5, 2020 at 14:27 | comment | added | confused | They don't publicly list their temperature range, but it is supposed to be tight enough to discriminate a few degrees for someone with or without fever. (If it really works that is :) ) | |
| Mar 5, 2020 at 14:26 | comment | added | confused | @probably_someone oh sure sorry. I was thinking of two things. One I have seen that FLIR cameras like the A20M have "sensitivity" to temperature variations as low as 0.12C. Then I was thinking about this virus/fever scanning system someone showed me. thermoteknix.com/products/oem-thermal-imaging/… | |
| Mar 5, 2020 at 14:12 | comment | added | probably_someone | "some systems claim..." - Can you post an example of a system that claims this, so we can maybe figure out what the difference is? | |
| Mar 5, 2020 at 14:07 | history | asked | confused | CC BY-SA 4.0 |