公开(公告)号：EP4027159A1

公开(公告)日：2022-07-13

申请号：EP22150027.5

申请日：2022-01-03

Applicant: Rosemount Aerospace Inc.

Inventor： ESSAWY, Magdi A. ,  QUY, Dennis A.

IPC: G01R31/52

Abstract: Apparatus and associated methods relate to detecting leakage current in a powered electrical system. Leakage current is detected by comparing a high-frequency response signal with a high-frequency reference signal. A high-frequency excitation signal is coupled, via an inducer (32), into the powered electrical system at a first location. The high-frequency response signal is sensed, via a signal sensor (34), at a second location of the powered electrical system. Because the electrical dynamics of the powered electrical system can change in response to system degradation that results in leakage current, changes in the high-frequency response signal can be indicative of leakage. Thus, the high-frequency response signal is compared, by a controller (36), with a high-frequency reference signal. The high-frequency reference signal can be a high-frequency response signal obtained at a reference time, at which the powered electrical system is operating without leakage.

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.

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：EP3964843A1

公开(公告)日：2022-03-09

申请号：EP21194621.5

申请日：2021-09-02

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： QUY, Dennis A.

IPC: G01R19/165 ,  G01R31/3185 ,  G01R31/42

Abstract: A system for monitoring the quality of voltage supplied by a power supply includes a voltage variation detection module (70) and a controller (74). The voltage variation detection module has one or more level detection circuits that each receive a signal indicating the supplied voltage, thereby producing an amplitude signal representing a temporal variation in the voltage during a capture interval. The controller (74) determines the capture interval, provides a capture control signal that causes the level detection circuit(s) to receive the voltage during the capture interval, receives the respective amplitude signal(s) from each of the level detection circuit(s), and produces one or more output signals, each representing the amplitude signal(s) and the associated capture interval, thereby providing an indication of the voltage quality. A method of using the system is also disclosed.

公开(公告)号：EP3962249A1

公开(公告)日：2022-03-02

申请号：EP21191787.7

申请日：2021-08-17

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： QUY, Dennis A. ,  WICKS, Curtis

IPC: H05K5/02

Abstract: A water intrusion mitigation device (54) for use in enclosures housing electric components and equipment that are sensitive to humidity includes a thermoelectric cooler and a water electrolyzer (24). The thermoelectric cooler has two sides: a first side that is configured to be heated with the application of an electric current and a second side that is configured to cooled with the application of an electric current. The water electrolyzer is a proton exchange membrane that is in thermal communication with the second side of the thermoelectric cooler.

公开(公告)号：EP3745141A1

公开(公告)日：2020-12-02

申请号：EP19216276.6

申请日：2019-12-13

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： ESSAWY, Magdi ,  QUY, Dennis A. ,  HUYNH, Cuong Tho

IPC: G01P5/165 ,  G01P13/02 ,  G01R31/00 ,  G01R31/28 ,  G01R31/52 ,  H05B1/02 ,  H05B3/56

Abstract: A system and method for monitoring the health of a heater connected to a power supply by a power cable that includes a first power lead conducting an inlet current having an inlet current direction, and a second power lead conducting an outlet current having an outlet current direction opposite to the inlet current direction. The power cable passes through a center region of a toroid core one or more times, and a secondary winding on the toroid core is configured to induce a secondary voltage indicative of a difference between the inlet current and the outlet current, which defines the leakage current. The system includes a prognostic processor (80) that is configured to calculate a heater health indication based on the secondary voltage, which is indicative of the heater health.