2 results about "Em induction" patented technology

The utility model relates to the technical field of communication poles, in particular to an intelligent alarm device and a communication pole, which comprise an annular mounting piece, and a magnetic piece, an electromagnetic inductor, a microprocessor and a communication module which are respectively arranged on the mounting piece, the plurality of magnetic parts are uniformly distributed at intervals along the ring shape of the mounting part, the plurality of magnetic parts are all located in the induction range of the electromagnetic inductor, and the electromagnetic inductor and the communication module are electrically connected with the microprocessor. Through the structure, the electromagnetic inductor can detect the magnetic field change in the induction range and feed back the magnetic field change to the microprocessor, the microprocessor judges whether displacement occurs or not and the displacement degree according to the magnetic field change, and once the displacement degree reaches a preset value, the displacement degree can be fed back to a background monitoring center in time; therefore, background management personnel can handle abnormal conditions in time. When the intelligent alarm device is applied to the communication electric pole, the electric pole can be detected, and potential faults of the electric pole can be found in time.

The utility model discloses a motor operation angle detection device belongs to motor control and sensor technical field, this device realizes through following technical scheme: the same multi -pole magnetic ring of motor pole pair number is outside in motor rotating shaft terminal, and magnetic ring is along the circumferential direction and alternately arranges N north pole and N south pole, the lateral installation mode is adopted to the encoder, and its induction surface is perpendicular to rotating shaft axis, is used for detecting magnetic ring magnetic field and exports rotor angle signal. The encoder supports PWM or ABZ incremental encoding signal or absolute value SSI / SPI output, improves every rotation signal period number through multi -pole magnetic ring design, realizes high resolution angle detection. This scheme is through the magnetic ring outside isolation motor internal electromagnetic interference, combines lateral installation and reduces assembly accuracy requirement, has improved the precision of angle detection, anti -interference ability and installation convenience obviously, is applicable to servo motor, robot joint etc. High -performance control scene.