Infrared Training Center

Tuesday, December 22, 2015

Inspecting Solar Panels with UAVs


New video to show you featuring a FLIR thermal imager mounted on a UAV inspecting solar panels for damage.

This application of infrared thermography has come a long way and now, with a new aerial perspective, is an extremely efficient tool for maintenance and quality assurance inspections of solar systems. In contrast to time consuming traditional methods, large solar installations can now be inspected quickly from the right distance and view point.

Even with these advancements in the technology, however, a thermal imager still does not have the ability to detect problems on its own – you still need a qualified operator with the right knowledge and skills to use it properly.

That’s where ITC can help with training and certification! Check out our website for a complete list of course locations and dates now available through September 2016.


11 comments:

  1. Hello, I am looking for a help on varieties of temperature

    What is reflected temp, apparent temperature, absolute temperature and background temp. ?

    I am trying to find an answer of background temp. If I am doing Building thermography outside building, what would be my background temp ? Can i use Air temp with air velocity meter as my background temp. ??

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    1. Apparent Temperature: When an infrared measurement device emissivity setting is set to 1.0, the resulting temperature is called an apparent temperature. Apparent temperatures are readings NOT compensated for emissivity, and reflected radiation.

      Reflected temperature is the average apparent temperature of all radiation sources impinging on your target and reflected back to the infrared camera. Reflected radiation contributes no information about the actual temperature of your target, and must be subtracted from the total IR signal coming from your target (performed in your camera or IR software). Background temperature is another term for Reflected temperature.

      Reflected temperature is NOT air temperature. The easiest way to measure this for building analysis is to place a piece of aluminum foil next to a wall or surface of your building, and measure its apparent temperature.

      Absolute temperature is the corrected true target temperature when target emissivity and reflected temperature have been entered into the camera (and corrected for by the camera).

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    2. Thanks for Good info. Really appreciated.

      However, I Have read somewhere that, Aluminum Foil has got very low emissivity (0.03), will that be helpful while we want to measure reflected temperature?

      What about outdoor reflected temperature when we want to do outdoor building inspection?

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    3. Yes, aluminum foil does have a very low emissivity and is used often to attempt to quantify reflected background temperature. It only needs to be set, however, when you're measuring temperatures with a corrected and properly quantified emissivity value. Building envelope inspections are typically qualitative, however, and don't require temperature measurements. It's more about thermal patterns. What are you inspecting in buildings?

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    4. I am trying to do outside building thermography. The real application is, I have varieties of surface like Asphalt, concrete, cement, outside of building. I want to see, outdoor if there is any water leaks at bottom by thermal patterns. so i want to thermograph ground with different material.

      So what I got from above is, put aluminium foil at ground, set emissivity 0.03 in camera and measure temperature, that temperature is our reflected background temp, is that right?

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    5. If you're just looking for water leaks, you don't need the temperature. This is a more qualitative application and as such just leave the object parameters at their defaults. IR is technically not capable of detecting water on its own, especially just based on temperature. Its more about patterns and then confirm with an alternative test method.

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  2. Also, what if Ground is our target, then what would be our reflected temperature specially doing outdoor thermography.

    I understand that best time to do thermography is late evening or during early morning, but what is ground temp is low and outside air temp is high,

    sorry for asking many questions at once but i am just trying to understand basics.

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    Replies
    1. If the ground is your target, it typically has a very high emissivity, but it would be relatively "easy" to also quantify reflected temperature if necessary because it's likely going to be the sky if you're looking straight down or close. What's your application? What are you looking for?

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    2. I am trying to do outside building thermography. The real application is, I have varieties of surface like Asphalt, concrete, cement, outside of building. I want to see, outdoor if there is any water leaks at bottom by thermal patterns. so i want to thermograph ground with different material.

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    3. I can see you have many questions. I would suggest you take this free online course to learn the basics of thermography and how to interpret patterns for different applications.

      http://irtraining.inquisiqr4.com/catalog/course.asp?id=8817&cid=1528

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  3. I have gone through the site and read all blogs and this is a nice one:

    Drone UAV Inspection Services

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