If you press "Run" and then press "R", you can save simulation animation as GIF. The radio wave is spreading gradually and. Move the router that was in the middle around the lower right corner of the screen, this time set Iterations to 500 and tap "Run". When opening the created PNG image it looks like this. It seems that it takes time to calculate if the image becomes too big. At this time, the recommended image size is 500 × 500 px in one pixel calculation of roughly 1 cm of the actual layout. If you want to try it in the layout of your room, you first need to create the layout in PNG format. You can observe the spread of radio waves with this feeling. To reset it, you need to exit the application and restart it. Then, the waves of the newly placed router overlapped on the wave where the router was initially placed. If you tap on the screen you can easily change the location of the router, so install a router in the upper left room and press "Run". Sliding the "Rotation" bar allows you to change the two positional relationships. If you change the "Type" in the middle and the bottom of the screen from "Single" to "Double", the number of routers displayed will be two. Slightly strong radio waves can be observed in the upper right room where the door is open, but you can see that the radio waves have not reached very much in the upper left room that is completely closed. Tap "Run" as "terations 300 Plot every 10 Plot limit 1". įurthermore, if you want to observe the movement of waves, you can increase the number immediately after Iterations. Since this time Iterations is set to 100, it means that 4 steps out of 100 are completed and 106 picoseconds have elapsed in the simulation. Sooner or later, "Step 4, = 106 ps" appears on the display. While nothing happens while "Converting Image and allocating memory" is displayed for a while. Also, a structure in which the material of the white part of the room is concrete, the blue is brick, the red is wood, the green is glass, and the black is the space as the space spread is calculated and displayed. Plot every is the interval at which waves are displayed on the screen, Plot limit is the upper limit of the scale, and the smaller the Plot limit is, the brighter the color of the waves and the better the movement of the radio waves. In the "Iterations 100 Plot every 1 Plot limit 1" displayed at the top of the screen, the number after the Iteration shows the total number of calculations, and as you increase the number, the more waves are displayed. By default the sample layout is shown, so first try using the sample layout. The home screen looks something like this. When installation is completed press "Open" to launch the application. Tap "Continue" when payment is completed. Because it is a paid application, tap the part which is "¥ 99".Įnter the CVC code of the credit card for purchase and tap. WiFi Solver FDTD - Android Apps on Google PlayĪpplication installation from here. "A place where Wi-Fi is easy to connect and a place hard to connect Helmholtz equationUsing IdentifySimulation of Imperial College LondonDoctoral student doctoral student Jason Cole was doing, everyone was able to download the same simulation at home at 99 yen, so I actually tried using it. 23:00:00 "WiFi Solver FDTD" review which can simulate how Wi-Fi radio waves spread at home
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