公开(公告)号：US20220404386A1

公开(公告)日：2022-12-22

申请号：US17844289

申请日：2022-06-20

Applicant: Rosemount Aerospace Inc.

Inventor： Aswin Kumar Vallamkondu ,  Magdi A. Essawy ,  Dennis A. Quy ,  Ramesh Annamareddy

IPC: G01P3/487 ,  F01D21/00 ,  G01P3/489 ,  G01P21/02 ,  G01P3/48

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, 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 that couples an electrical signal generated by a radio-frequency signal generator into the inductive coil of the transmitter-configured magnetic speed probe, thereby radiatively transmitting an electromagnetic signal. A speed-probe monitor 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：US11549390B2

公开(公告)日：2023-01-10

申请号：US17451431

申请日：2021-10-19

Applicant: Rosemount Aerospace Inc.

Inventor： Aswin Kumar Vallamkondu ,  Ramesh Annamareddy ,  Magdi A. Essawy ,  Dennis A. Quy

IPC: F01D21/00 ,  G01P3/48 ,  G01P3/487 ,  G01P3/489

Abstract: Apparatus and associated methods relate to health-monitoring of a magnetic speed probe. An inductive coil of the magnetic speed probe 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. A signal generator coupled to the inductive coil of the magnetic speed probe generates the radio-frequency signals that, when conducted by the inductive coil, causes an inductive coil to act as a radio transmitter by radiatively transmitting the radio-frequency signals. The radio-frequency signals transmitted by the inductive coil are detected by a radio receiver. The radio-frequency signals received are indicative of health of the magnetic speed probe.

公开(公告)号：US11892469B2

公开(公告)日：2024-02-06

申请号：US17844289

申请日：2022-06-20

Applicant: Rosemount Aerospace Inc.

Inventor： Aswin Kumar Vallamkondu ,  Magdi A. Essawy ,  Dennis A. Quy ,  Ramesh Annamareddy

IPC: G01P3/48 ,  F01D21/00 ,  G01P3/487 ,  G01P3/489 ,  G01P21/02

CPC classification number: G01P3/487 ,  F01D21/003 ,  G01P3/4805 ,  G01P3/489 ,  G01P21/02

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, 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 that couples an electrical signal generated by a radio-frequency signal generator into the inductive coil of the transmitter-configured magnetic speed probe, thereby radiatively transmitting an electromagnetic signal. A speed-probe monitor 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：US20220252631A1

公开(公告)日：2022-08-11

申请号：US17403827

申请日：2021-08-16

Applicant: Rosemount Aerospace Inc.

Inventor： Aswin Kumar Vallamkondu ,  Ramesh Annamareddy ,  Mark Sherwood Miller

IPC: G01P3/36 ,  G01J3/26 ,  G01P3/44

Abstract: Apparatus and associated methods relate to optically determining rotation frequency of a rotatable member using a Fabry-Perot cavity formed between a mirror and a movable reflective mirror. A cavity dimension between the mirror and a movable reflective mirror changes in response to movement of the movable reflective mirror. The movable reflective mirror is bonded to a magneto-strictive material having a thickness dimension that changes in response to changes in a magnetic field. A magnet generates the magnetic field, which changes in response to rotation of the rotatable member.

公开(公告)号：US20220220860A1

公开(公告)日：2022-07-14

申请号：US17451431

申请日：2021-10-19

Applicant: Rosemount Aerospace Inc.

Inventor： Aswin Kumar Vallamkondu ,  Ramesh Annamareddy ,  Magdi A. Essawy ,  Dennis A. Quy

IPC: F01D21/00 ,  G01P3/487 ,  G01P3/489

Abstract: Apparatus and associated methods relate to health-monitoring of a magnetic speed probe. An inductive coil of the magnetic speed probe 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. A signal generator coupled to the inductive coil of the magnetic speed probe generates the radio-frequency signals that, when conducted by the inductive coil, causes an inductive coil to act as a radio transmitter by radiatively transmitting the radio-frequency signals. The radio-frequency signals transmitted by the inductive coil are detected by a radio receiver. The radio-frequency signals received are indicative of health of the magnetic speed probe.