Wi-Fi chargers: a new technique to charge cameras
An Indian research scholar, Vamsi Talla and his colleagues, working at Washington University, discovered a system which is also known as power-over-Wi-Fi. This system can be used to charge the remote & automatic devices such as a camera with the help of Wi-Fi internet system.
The concept of wi-fi chargers is very easy & simple. A simple antenna can collect the energy which will available in the form of the broadcast of Wi-Fi radio. The Wi-Fi receivers that are especially designed for the purpose to collect the information, carries the information by the broadcast.
Talla connect the antenna with a temperature antenna and locate it near a Wi-Fi router measuring the results in the form of voltages of the device and also show that how long it can work to charge the remote system alone.
Even they also attached a camera to the sensor with more ambitious.
It was a low-power antenna which can be capable to produce black 7 white images of 174 X 144 pixel, which entails 10.4 milliJoules amount of energy for a per picture.
To save energy, they have been attached a low leakage capacitor within the camera which will activate when the capacitor becomes charged and it will continue operating till the voltage fall down to 2.4 Volts.
Then the picture will be stored in a 64 KB RAM i.e. Random Access Memory. In the succeeding experiment, the camera will perform very well.
Talla told MIT Technology Review, “The battery-free camera can operate up to [about five metres] from the router, with an image capture every 35 minutes”.
He also increased the distance to 7 meters more by adding a rechargeable battery. He also demonstrated that that the device can be taken outside while it keeps the power supply inside because the router can even power the camera through the brick wall.
Talla said, “The technology would be hugely useful for surveillance, perhaps connected to a movement sensor to trigger the camera when something moves in its field of view”.
The team connected one more thing to the sensor that is Jawbone fitness tracker and allow using it by charging with that power.
The team noted out, “Using this, we charge a Jawbone device in the vicinity of the power-over-Wi-Fi router from a no-charge state to 41 percent charged state in 2.5 hours”.
According to the MIT report, power-over-Wi-Fi could be the enabling technology that finally brings the “Internet of Things” to life.http://techiebun.com/2015/06/08/wi-fi-chargers-a-new-technique-to-charge-cameras/http://techiebun.com/wp-content/uploads/2015/06/wifi-chargers.jpghttp://techiebun.com/wp-content/uploads/2015/06/wifi-chargers-150x150.jpgGadgetsNewsTechnologyAn Indian research scholar, Vamsi Talla and his colleagues, working at Washington University, discovered a system which is also known as power-over-Wi-Fi. This system can be used to charge the remote & automatic devices such as a camera with the help of Wi-Fi internet system. The concept of wi-fi chargers...Sachin Saxenahttps://plus.google.com/+VenuseBusinessSolutionsBareillySachin Saxenasaxena.firstname.lastname@example.orgAdministratorTechieBun