| 摘要 |
<p>The seal has annular internal and external plates (1, 2) for forming an annular region (4) integrated to an autonomous system that measures signals delivered by a magnetic coder (3). The system has an electric energy storing device (8) for storing electric energy generated by an electric energy generating device (7), and a sensor supplied by the energy. The sensor includes sensible elements e.g. giant magneto resistance elements, arranged at a distance for reading the signals emitted by the coder. The system has a wireless communication device for transmitting digital signals of the sensor. The coder forms a multipolar magnet with pairs of poles. The wireless communication device can be an 868 mega hertz type module. An independent claim is also included for an antifriction bearing comprising a rolling body arranged in a bearing region formed between fixed and rotating components.</p> |
