According to latest reports Fenghuang Wang, NdFeB magnets network latest Reprinted: May is the season of the World Expo, China and the world is the most spectacular season, CPPCC Chairman Jia Qinglin, Chairman of the International Exhibitions Bureau common blue peaks start button, open the Expo site "open" a huge LED screen above the podium antique door ... ... to open at the official Shanghai World Expo.
From around 189 countries and 57 international organizations, will be here for people to offer a brilliant blend of advanced technology and civilization of the feast. The park opened just a half-hour ceremony, not only contains the exchange of civilization and technology, but also fit the current World Expo "Better City, Better Life" theme.

Opening ceremony of the Shanghai World Expo Park, the activation device, an embodiment of modern science and technology advanced, but also implies the ancient civilization and modern technology combine to lead to a better future for mankind to open the road.
"Golden Key" developer of the Chinese University of Science and Technology Practice and innovation base, said Professor Kong Fanrang Director, "Golden Key" in the air suspension and automatic rotation stability, its secret lies in the use of adaptive control magnetic levitation technology, which is the world's most advanced magnetic levitation rail, magnetic levitation bearing core technology, has applied for patents.
Original, 60 cm long in the "Golden Key" at the top, there is a NdFeB magnetic, this is a special made with rare earth magnets, has a powerful magnetic force. And it is 5-6 cm above the "celestial globe" within a circle, then the possession of two sets of advanced micro-magnetic control system. A system control "golden key" of the suspension, high-precision sensor close to 2000 times per second speed auto-detection "golden key" floating position, to move up or down less than 1 micron; the other a system rotating magnetic field is generated, to "golden key" automatically rotated every 9 seconds.
When the "golden key" slowly turning the occasion, "armillary sphere," the two golden rings devices also automatically raised, and around the "golden key" to do forward and reverse rotation stop, full of artistic beauty. Behind this seemingly simple details, embodied the designer's creativity and mechanical intelligence.
According starter mechanical designer, 704 Institute of China Shipbuilding Heavy Industry Chang, Senior Engineer introduced Charles home, "armillary sphere" on the two ring diameter of 1.6 meters and 2 meters. In order to achieve the perfect visual effects, without affecting the control of the "Golden Key" in the suspension system, installation of mechanical design using a new type of carbon fiber material to prevent magnetic interference, while its weight does not exceed 2.5 km