Android Apps

September 10, 2014 at 9:11 pm

WiFi Solver FDTD v2.4 Apk



With this app that you may take a floorplan of your own home, set the site of a WiFi router, and simulate how the electromagnetic waves propagate.

That is according to a up to date weblog publish ‘Helmhurts’ at, which was once featured on io9, Ars Technica, the Day by day Mail, Scientific American and lots of different blogs.

This app makes use of the 2D Finite Distinction Time Area strategy to clear up Maxwell’s equation on a Cartesian grid. An instance floorplan is incorporated within the app.

How to use:

Your floorplan must be a .png file, with empty area marked black and partitions marked white. Color or grayscale photography will likely be transformed into monochrome photography on loading – this may increasingly take a couple of seconds.

Pixels are mapped to 1 centimetre, so scale the floorplan accurately.

The simulation is proscribed in pace because of the cell processor, so attempt to preserve photography under roughly 500×500 pixels

Contact the picture to set a router area, marked through a pink circle. Make a choice the antenna parameters on the backside.

Set the choice of iterations to run for, how incessantly to plot the end result, and the higher restrict on the colourmap scale.

Make a selection a container to plot – the default is the out-of-aircraft electrical container.

Click on run and the simulation will start. Click on cease to pause at any time – this protects the simulation development which will also be persevered by means of clicking run once more. To reset, open a picture once more.

To avoid wasting the simulation output as a picture, click on Save at any time. Pictures are saved to interior/exterior storage and brought to the top of the digital camera roll.

To begin recording a simulation click on the report ‘R’ button. When the simulation is stopped a GIF animation is generated.

Under the bonnet:

An antenna oscillates at 2.4 GHz. The perimeters of the picture use absorbing boundary stipulations as in Mur 1981, IEEE Transactions on Electromagnetic Compatibility.

The place partitions are outlined, the refractive index is about to the precise one for concrete at this frequency. Various refractive index profiles should not presently carried out.

Wavelength and backbone are presently consistent, this may occasionally exchange in a future unencumber.

This app will not be supposed as a major substitute for present EM simulation instrument applications.
As a 2D approximation together with handiest easy partitions it does no longer correctly adaptation a given floorplan.

It is, alternatively, a little of enjoyable and wonderful to play with.


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