With
PROSPECT: QUITE BRIGHT
WHAT WE ARE DOING
A PROMISING IDEA
Wi-Fi
signals are almost everywhere now, a lot of energy is wasted. We need to implement green communication and reduce electromagnetic pollution.
PRESENTATION THEME: WIRELESS CHARGING
AND ENERGY HARVESTING
Speaker: Wang Biao Student ID: 1130349094
APPLICATIONS OF WIRELESS CHARGING
Samsung: Charging Pad Nokia: Charging Shell
Design
THANK YOU!
Google Nexus: Charging Orb
FURTHER APPLICATIONS IN DAILY LIFE
THE PRINCIPLE OF WIRELESS CHARGING

Inductive charging (also known as "wireless charging") uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.

DISADVANTAGES
Lower efficiency, waste heat More costly--- 40/50$ vs. 40RMB Inconvenience--- can’t move it too far Incompatibility---Qi has become a standard adopted by many companies such as Google and Nokia.
a block that could constantly check and scavenge the energy from surrounding RF signals, of course, without interfering with normal information transfer. Quick Scan Over Wireless Charging
ADVANTAGES

Convenience - rather than having to connect a power cable, the device can be placed on or close to a charge plate or stand. Durability - Without the need to constantly plug and unplug the device, there is significantly less wear and tear on the socket of the device and the attaching cable .

ABOUT CHARGING TIME
Samsung Pad: 3.922h
Charge Over USB
WIRELESห้องสมุดไป่ตู้ CHARGING SPECIFICATIONS
Currently
the Qi adopts 0-5W low-power specification, but the new medium-power specification of about 12-15W will come up soon in late 2013 by the WPC(Wireless Power Consortium) . the new specification coming out, the charging time would be greatly decreased by roughly 3 times. That would give us more convenience and mobility.