I set up a sensor at my home in a place where I know there are no humans. I noticed this unit has random false positives throughout the day. Is this something which I would need to write some code to mitigate the false triggering?
XYC-WB-DC
Is this something which I would need to write some code to mitigate the false triggering?
I doubt there is anything you can do other than wait until you get three or closely spaced triggers.
in a place where I know there are no human
Yes but you could be triggering off birds and a animals.
Thanks!
I was also thinking about adding a second PIR module and writing in an 'AND' condition. I'm guessing the probability of both of them having positives at the same time is greatly reduced.
Good idea.
It depends upon whether the second module sees the same thing - birds, animals, drapes blowing in the wind, papers moving because of an air conditioner, etc. - that triggers the first module. Radar engineers sometimes use m out of n logic (m positives out of n opportunities, such as 4 out of 7) to handle this situation. They use calculations or simulations based on SNR (signal to noise ratio), the environment, the expected targets, and the type of radar. You can just try different things.
vaj4088:
It depends upon whether the second module sees the same thing - birds, animals, drapes blowing in the wind, papers moving because of an air conditioner, etc. - that triggers the first module. Radar engineers sometimes use m out of n logic (m positives out of n opportunities, such as 4 out of 7) to handle this situation. They use calculations or simulations based on SNR (signal to noise ratio), the environment, the expected targets, and the type of radar. You can just try different things.
Yep, just trying it is ultimately the determining factor. Thanks for your help.