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Strange behavior in output as shown in Initial State #8

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nikertneca opened this issue Jun 27, 2018 · 4 comments
Open

Strange behavior in output as shown in Initial State #8

nikertneca opened this issue Jun 27, 2018 · 4 comments
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@nikertneca
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I loved setting this up, but I'm seeing some strange behavior in the plots that I need help understanding (and hopefully fixing). Here are two images that show what I'm seeing from the SenseHAT data...

Humidity from SenseHAT (every 60 seconds):
6-27-2018 2-11-42 pm

Temperature from SenseHAT (every 60 seconds):
6-27-2018 2-12-18 pm

Notice the periodic pattern in these? I'm 99% sure that neither the temperature nor humidity in my sensor location are varying like that.

Here's a third image, based on Dark Sky data for wind speed and gusts (every 10 minutes):
6-27-2018 2-10-40 pm

Notice the strange "periodic stair step" pattern? It's another thing I can't explain, but would love to fix. I included it here because it's coming from DarkSky rather than the SenseHAT.

I'm reading SenseHAT data every minute and DarkSky data every 10 minutes but I don't think that's the source of the problem, because the cycles and stair-steps aren't in increments of 10.

Any ideas or suggestions will be greatly appreciated.

Andy

P.S. - Is there any way to add a moving average curve in Initial State? I've tried 'smooth' but it isn't very useful for getting rid of the erratic behavior of these curves.

@jrbail01
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Can you share that data with me ([email protected] - https://support.initialstate.com/hc/en-us/articles/360002893592-Sharing-a-Data-Bucket )? I have some ideas but want to see your data first.

@nikertneca
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Shared.

@jrbail01
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For inside temperature, I believe you are seeing the cycle of your HVAC system cooling your room. Honing in on the inside temperature near the peak outside temperature, you see the inside temperature quickly rise from 78.8 to 79.73 over 17 minutes. This is when your HVAC system is off. Once the temperature gets to 79.73, the AC kicks on again and it takes it 65 minutes to cool the room back to 78.8. It takes 65 minutes to cool b/c it is so hot outside and the HVAC system is working harder. At night, you see that the time it takes the AC to go back to the low point of temperature is faster (e.g. 12 minutes). That is b/c the HVAC system doesn't have to work as hard to cool the inside b/c the outside is cooler. Inside humidity changes when your HVAC is on or off so, you are seeing that change at the same frequency as your inside temperature.

This is a great example of the natural temperature fluctuations your inside room is experiencing as your HVAC systems moderates the temperature of your room.

As for wind speed and wind gust, I am pretty sure that is just real data coming from Dark Sky related to your location.

@nikertneca
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I may try turning the thermostat up, just to see if it changes the pattern. Stay tuned. And thanks!

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