Reduce noise in all my graphs

[GerdW]

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@crossrulz wrote:

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@alexderjuengere wrote:

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@Jugo wrote:

is there no universal approach to get rid of ALL noise?

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 work at -278,15 Kelvin 🙈

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I think you mean -278.15 Degrees Celsius, which is 0 Kelvin.

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No, this would be -5 K... (when hell freezes)

[SlippinJimmy85]

Have a look to the attached code. 

[Jugo]

i am using LabVIEW 2017 so i can not open this file.. it is a newer version.. can you please re-upload as an older version

[altenbach]

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@Jugo wrote:

i am using LabVIEW 2017 so i can not open this file.. it is a newer version.. can you please re-upload as an older version

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Which file? This is a long thread and you should always quote relevant sections so we know what you are replying to.

[altenbach]

See if this can give you some ideas.... (filter was enabled for the second half)

[Jay14159265]

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@Jugo wrote:

is there no universal approach to get rid of ALL noise?

I worked for a group of civil engineers for a bit and they loved to zoom in on a signal as far as the UI would let them. At this high zoom level you see all kinds of aliasing and noise, so a simple solution for getting rid of noise is to zoom out, and don't let your UI zoom into noise / aliasing. You can zoom into any real signal in a way that makes it look noisy on a UI. It looks like your plot is auto scaling to noise, which is bad. 

Also another great trick is, dont sample things any faster than you need to, you will get noise that you then need to get rid of. Of course this may require some knowledge of your signal before hand and how to set up your ADC front end but not having the noise in the first place is a great way to 'get rid' of it.  

[Jugo]

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@SlippinJimmy85 wrote:

Have a look to the attached code. 

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Can you please re-upload your file in an older version?

[Jugo]

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@altenbach wrote:

See if this can give you some ideas.... (filter was enabled for the second half)

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Yeah this looks great! Thank you very much! I have to check later if it works but i will let you know😁

P.S: i just figured out how to reply properly with using a quote... sorry i am completely new to this whole thing

[altenbach]

Here it is down-converted to LabVIEW 2017 posted earlier by Fourier_.

Note that the ptbypt filters works one one single channel, so modifying the code for 12 channels will get somewhat hairy because you needs 12 reentrant instances.  (It is probably worth to write your own that accepts multiple channels as 1D array like in my earlier example).

Also note that any ptbypt filter can of course only use historical data, so there will be a delay proportional to the strength of the filter.

[Jugo]

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@altenbach wrote:

How much to do you know about the noise and where it comes from? Maybe it can be eliminated on the hardware side!

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I have to say, that i tried to solve it on the software side, but it didn´t really work out the way i wanted. Then i just looked to fix the hardware and by just turning off all other instruments i didn´t need and keeping a safe distance between my sensor and all other electircal devices, the noise was reduced drastically. 

It went from this:

to this:

To be honest, i was hoping to fix it via software but maybe i want too much for my very first LabVIEW program.

And the moral of the story for myself, look and try out easy solutions first before going for the complicated ones😄

thanks to everyone who tried to help i appreciate it A LOT💓