Forklift driver dash at full speed through the narrow streets of bearings, production and construction markets. As Formula 1 driver they drift around curves, much to the chagrin of the solid rubber tire. On them weigh hundreds of kilograms, they are constantly being put through its paces and perky driving does the rest, heat the maturation.
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150 degrees Celsius are not uncommon. In this case, the interior of the tire liquefied. He may burst, so that the hot sticky liquid splashes around and injure employees. Maybe the vehicle tilts as much as. Apart from these dangers, the replacement costs are relatively high. A tire costs 200 Euro fast.
The problem: From the outside can not see if it simmers inside the tire you. The outer skin is cooled sufficiently, so it’s constantly feels tight.
A “view” inside the tire
Hanoverian scientists want to allow a look inside their tires, the truck drivers now, so they adapt their driving style. Researchers at the Institute of Transport and Automation Technology (ITA) at the University of Hannover want in the manufacture of tire temperature and pressure sensors and a transmitter, which sends the data to the onboard computer, integrated into the solid rubber. “With the integration of electronic components in the tires of trucks we put the tire in a position to monitor themselves,” said ITA Director Prof. Dr.-Ing. Ludger Overmeyer.
For this purpose, the electronics must be powered. A battery does not want to integrate the scientists, because their life would end the use of the tire. Power is therefore generated by means of a contactless electro-magnetic field.
This creates a transponder, which also is in the rubber. In principle this is a coil, is generated in the alternating current, when it passes through an electromagnetic field. This is converted into direct current, the sensors and transmitter, which is in the transponder, come to life. If it gets too hot the tires or the load too large proposes the electronic alarm.
Integration of the transponder is already managed
The first step in the ITA scientists have already done. They succeeded, together with the Hanover-based tire manufacturer Continental, to integrate a transponder in a tire and let him pass without contact him power.
Conversely, he radioed his code in the external receiving station. The electronics had survived without damage during the manufacturing process 140 degrees Celsius. Now the researchers have to find sensors that are also resistant to heat. In summer 2016, the project should be completed and the tire industry are available.
