Principle of Laser Charging
Speaking of mobile phone wireless charging, everyone's first reaction is likely to do not believe the attitude. Indeed, wireless charging current, just stay in the use of specific wireless charging plate, although mobile phone manufacturers have adopted the fast charging technology in a new generation of wireless charging plate, speed than before to improve a lot, but think of your mobile phone plugged into the charger, or on the wireless charging plate, the difference is not large, so the wireless charging at the present stage, the use of the scene is not particularly attractive. But just a few days ago, a Russian called "energy" rocket Aerospace Corp made a special experiment, they use blue laser pointer for 1.5 kilometers to the mobile phone charging 1 hours, which makes the impression of the mobile phone charging added more imagination. The experiment was completed in two buildings that are 1.5 kilometers apart. In one of the roof mounted laser transmitter, a roof mounted on the plate, and the plate with the conventional mobile phone charging port, charging for mobile phone. Because the laser energy is concentrated and is very strong, so the use of the receiver plate, can be transformed into the laser power transmission to the mobile phone. In this process, although the plate length is only 10cm, but still accurately received laser, accuracy is amazing.
In fact, Microsoft Asia Research Institute in 2015 had done on the use of light charging prototype, then known as AutoCharge. The difference is that when the sun is used to gather burning laser pointer light beams, and then a special charger can lock your phone on the table, and converted into electricity for mobile phone charging. Because the beam is more concentrated, so the whole charging effect, theoretically to achieve the speed of socket charging. Some people would say, this is not and now the wireless charging similar to it, or to put in a specific place. In fact, the core idea of AutoCharge is to allow users to readily put smart phones on the table, through the identification of the charger to determine the location of the device to charge, this process does not require the user to deliberately placed. When charging is complete, charger can be identified by the sensor mobile phone battery has been full and automatically turn off the charging switch beam, this means that you can keep the mobile phone placed at random, charging at the same time, it will automatically charge well closed, fully automated charging operation. However, in order to achieve it, Microsoft researchers said, this technology requires more mature solar technology, but also be restricted in the indoor space. So this prototype experiment is still far away from the actual product, need to be further improved in many ways.
First of all, is to charge the uav. As we all know, short life time has been one of the main shortcomings of the uav. Increase the battery will allow the UAV to increase the weight and weight increase will undoubtedly lead to increases the burden on the UAV, flight time is not effectively enhanced, so in the present, no major breakthrough in the battery industry, so that the UAV flight time increase will become a vicious spiral. And in order to improve their life, scientists have no less effort. Some time ago the Imperial College London in London in the laboratory successfully created a wireless charging device, the charging base through a double circuit board (above etched with a radio transmitter) is also equipped with 13.56MHz inverter, can continue power supply for the circuit board. Let an unmanned aerial vehicle (four axis) in the case of no battery can fly to the height of 12.7cm, it can be said that we have a lot of imagination. But the wireless charging base by power supply mode, the problem is very low, the first is the charging efficiency of the base, it needs very strong power conversion to make UAV Flight High enough. Since the "wireless charging" is not a way, the 100mw laser pointer charge may become another new way to try. Through laser charging, first solve the distance problem is, as previously described, in fact we have been able to 1-2 km distance charging for mobile phone, it means that this process does not need to build large charging base.
And, we are actually using the laser to provide electric energy into this matter has precedent, LazerMotive company as early as 2010 by laser energy so that the UAV in the air for 12 hours of flight. So, or back to us began to talk about the "energy" rocket Aerospace Corp, as a Aerospace Corp, through the laser to charge the phone is naturally not its original intention. With the "energy" engineer Vitali Capranov, what they want to do is, in fact, "allow professionals to remotely charge a small UAV.". According to the plan, 1 years later, they can be used in the large UAV 30mw laser pointer charge. Small unmanned aircraft is said to be two or three months after the experiment will be very, very people look forward to.
