公开(公告)号：EP4109108A1

公开(公告)日：2022-12-28

申请号：EP22180108.7

申请日：2022-06-21

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： VALLAMKONDU, Aswin Kumar ,  ANNAMAREDDY, Ramesh ,  ESSAWY, Magdi A. ,  QUY, Dennis A.

IPC: G01P3/481 ,  G01P21/02 ,  G01D5/20 ,  G01P3/488

Abstract: Apparatus and associated methods relate to monitoring health of a system for sensing rotational frequency of a rotatable member. A plurality of magnetic speed probes (20A - 20C), each of which is configured to sense the rotational frequency of the rotatable member, are arranged in transmissive proximity with one another. A transmitter-configured one of the plurality of magnetic speed probes includes a signal coupler (24A) that couples an electrical signal generated by a radio-frequency signal generator (18) into the inductive coil of the transmitter-configured magnetic speed probe, thereby radiatively transmitting an electromagnetic signal. A speed-probe monitor (22) electrically coupled to each of the plurality of magnetic speed probes determines, based on the coil current sensed by each of the plurality of magnetic speed probes in response to the electromagnetic signal radiatively transmitted, health of the system.

公开(公告)号：EP4040167A1

公开(公告)日：2022-08-10

申请号：EP22150139.8

申请日：2022-01-04

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： VALLAMKONDU, Aswin Kumar ,  ANNAMAREDDY, Ramesh ,  MILLER, Mark Sherwood

IPC: G01P3/486

Abstract: Apparatus and associated methods relate to optically determining rotation frequency of a rotatable member using a Fabry-Perot cavity (16) formed between a partly reflective mirror (26) and a movable reflective mirror (28). A cavity dimension between the mirror and the movable reflective mirror changes in response to movement of the movable reflective mirror. The movable reflective mirror is bonded to a magneto-strictive material (30) having a thickness dimension that changes in response to changes in a magnetic field. A magnet (14) generates the magnetic field, which changes in response to rotation of the rotatable member. The detectable field variations are caused e.g. by teeth of a rotating target, moving within the magnetic field of a stationary permanent magnet.

公开(公告)号：EP4187257A1

公开(公告)日：2023-05-31

申请号：EP22209407.0

申请日：2022-11-24

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： VALLAMKONDU, Aswin Kumar ,  RAMTHUN, Kent Allan ,  DEVARAKONDA, Naveen Kumar ,  BURNS, Jeremy ,  REID, Alexander N. ,  JEGATHEESWARAN, Karthik ,  VENNELAKANTI, Venkata Sai Sudheer Kumar

IPC: G01P13/02 ,  B64D43/02 ,  G01D5/30

Abstract: A flow angle sensor includes a sensing element, a background component connected to and movable with the sensing element, the background component having a marker, a lens (32) adjacent the disk, an image sensor (34) axially aligned with the lens, a light source (38) positioned to illuminate the disk, and an image processing system (36) connected to the image sensor (34). The image processing system (36) provides an angle of attack output based on a location of the marker sensed by the image sensor.

公开(公告)号：EP4027148A1

公开(公告)日：2022-07-13

申请号：EP22150140.6

申请日：2022-01-04

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： VALLAMKONDU, Aswin Kumar ,  ESSAWY, Magdi A. ,  ANNAMAREDDY, Ramesh ,  QUY, Dennis A.

IPC: G01P21/02 ,  G01P3/488 ,  G01P3/487

Abstract: Apparatus and associated methods relate to health-monitoring of a magnetic speed probe (14). An inductive coil (18) of the magnetic speed probe (14) is used for two purposes: i) to sense a changing magnetic field caused by rotation of a rotating member; and ii) to radiatively transmit radio-frequency signals for determining the health of the magnetic speed probe (14). A signal generator (20) coupled to the inductive coil (18) of the magnetic speed probe (14) generates the radio-frequency signals that, when conducted by the inductive coil (18), cause the inductive coil (18) of the speed probe to act as a radio transmitter by radiatively transmitting the radio-frequency signals. The radio-frequency signals transmitted by the inductive coil (18) are detected by a radio receiver (24). The radio-frequency signals received are indicative of health of the magnetic speed probe (14).
The analysis of the received radio signals can involve emitting of a signal having a fixed frequency and determining of the amplitude of the received signal. It can also involve a frequency sweep of the radio signals applied to the coil, evaluating the amplitudes of the received signal and determining the maximum amplitude, which may indicate the resonant frequency of the coil. The received signals may be compared with reference values indicating normal operation.