INSIDE A SMARTPHONE SAFETY TESTING LAB
This is the Silicon Valley base of UL, a security testing group, and this lab is used to measure the radio waves emanating from wi-fi devices.
The FCC units limits within the US that producers should comply with and its with these robots and vats of liquid the place that will get measured.
“The liquid is designed to emulate the electric properties of the human body, certain tissue parts anyway, so the conductivity and permeativity measured, and they are simulating what the human does.”
Here’s the way it works.
The gadget being examined is positioned below one of many moulds, which when filled with liquid simulate the torso or head.
And then the robotic strikes in.
At the tip of the probe is a small antenna. It’s moved to totally different factors within the liquid to measure the radio wave subject.
The arrange permits testers to measure the sector not simply at pores and skin stage however deeper within the physique too. That wouldn’t be doable if a stable mannequin was used.
The result’s a 3D mannequin
And testing a contemporary smartphone can take time. Up to a number of weeks due to all of the frequency bands utilized by 3G and 4G networks.
And why trouble with all of this?
“There is evidence that high levels of RF energy can affect tissue and cause damage to it. There is concern that low levels over time can cause damage. There’s no evidence for it, but there are concerns, so just in case let’s do the testing anyway and make sure the energy levels are low enough.”
So subsequent time you see a brand new cellphone go on sale, bear in mind it most likely went by means of weeks of testing in a lab like this one.