Reception's power in a NI WSN with standard 802.15.4

[VincentIUT]

Hello,

We are 3 students in France who are setting up a NI WSN which mesures temperature and relative humidity. For the technical aspect, we have to acquire the reception power RSSI, the latence ... of different measurements nodes (NI 3202, NI 3226 and gateway NI 9791). Indeed, we have to analyze differents aspects for the deployement of the nodes in classrooms.

However, we don't have these information with NI MAX and NI Labview software. We can't acquire the digital data, maybe they are locked by NI. Can we access to those for each node ?

Thank you for your answers.

[fromm8 · Accepted solution]

Hello VincentIUT

When you create a WSN project, you can find Link quality in the project explorer, and you can draw this node to the VI, and it indicates the strength of received signal. While the value range from 0 to 100

What does the value means?... you can use the discussion forum linked below as reference:

Signal Strength - dBm calculation?

In that forum there is a broken link to an article, here you can find it:

Converting Signal Strength Percentage to dBm Values

Regards

Frank R.

[VincentIUT]

Hello fromm8,

Thank you for great answer.

Unfornatunately, we didn't test this yet because we don't have time for the moment but we'll try this as soon as possible.

I will give you news as soon as we receive any signal or numbers for the quality link.

[VincentIUT]

Hello,

Thank you for your answer. Indeed we acquired a percentage from link quality and converted it in dBm with a formule we deducted about the sensibility of each nodes.

So the problem is resolved, thank you very much!