RADIO FREQUENCY WAVEGUIDE COMMUNICATION IN HIGH TEMPERATURE ENVIRONMENTS

    公开(公告)号:EP3826188A1

    公开(公告)日:2021-05-26

    申请号:EP20205031.6

    申请日:2020-10-30

    IPC分类号: H04B1/38

    摘要: A system of a machine includes a network of a plurality of nodes (68a, 68b) distributed throughout the machine. Each of the nodes (68a, 68b) is operable to communicate through a plurality of electromagnetic signals (86). A controller (66) is operable to communicate with the network of nodes (68a, 68b) through the electromagnetic signals (86). A plurality of waveguides (70-73; 202; 222; 242) is configured to confine transmission of the electromagnetic signals (86) between the controller (66) and one or more of the nodes (68a. 68b). A radio frequency antenna (206) is coupled to a first end of a first waveguide (202; 222; 242) of the plurality of waveguides (70-73; 202; 222; 242). A radio frequency transceiver (204) is coupled between the controller (66) and the radio frequency antenna (206). A capacitively coupled membrane (208) at a second end of the first waveguide (202; 222; 242) is configured to establish communication between the first waveguide (202; 222; 242) and at least one node of the plurality of nodes (68a, 68b).

    RADIO FREQUENCY SYSTEM SENSOR INTERFACE
    12.
    发明公开

    公开(公告)号:EP3826187A1

    公开(公告)日:2021-05-26

    申请号:EP20205026.6

    申请日:2020-10-30

    IPC分类号: H04B1/38 G06K7/10 H04Q9/10

    摘要: A system (64) of a machine includes a network of nodes (68a, 68b) distributed throughout the machine. Each of the nodes (68a, 68b) is operable to communicate through electromagnetic signals. The system (64) also includes a radio frequency transceiver (204), a first antenna (206) coupled to the radio frequency transceiver (204), a second antenna (208) coupled to one or more sensor nodes (68b), and a controller (66) coupled to the radio frequency transceiver (204). The controller (66) is configured to select at least one sensor node (68b) to interrogate, transmit one or more interrogation frequencies from the radio frequency transceiver (204) through the first antenna (206) to the second antenna (208), receive one or more sensor frequencies at the first antenna (206) broadcast from the second antenna (208) based on a frequency response of the at least one sensor node (68b) to the one or more interrogation frequencies, and determine one or more sensed values based on the sensor frequencies received at the radio frequency transceiver (204) through the first antenna (206).

    RADIO FREQUENCY WAVEGUIDE WITH SYSTEM NODES
    13.
    发明公开

    公开(公告)号:EP4164135A1

    公开(公告)日:2023-04-12

    申请号:EP22200407.9

    申请日:2022-10-07

    IPC分类号: H04B3/52 H04B3/54 H04B3/56

    摘要: A node (68) of a radio frequency waveguide system (500) includes a waveguide interface (519), a signal splitter (522), a power rectifier (532) and conditioner (534), a communication filter (538), and a network processor (542). The waveguide interface (519) is configured to communicate through a waveguide (516). The signal splitter (522) is configured to split a radio frequency transmission received at the waveguide interface (519) between a power path (524) and a communications path (526) within the node (68). The power rectifier (532) and conditioner (534) are configured to produce a conditioned power signal (536) based on power received through the power path (524). The communication filter (538) is configured to produce a filtered communication signal (540). The network processor (542) is powered by the conditioned power signal (536) and configured to extract encoded information from the filtered communication signal (540).

    MULTI-MODE MICROWAVE WAVEGUIDE BLADE SENSING SYSTEM

    公开(公告)号:EP3978953A2

    公开(公告)日:2022-04-06

    申请号:EP21201073.0

    申请日:2021-10-05

    摘要: A multi-mode microwave waveguide blade sensing system (500) includes a transceiver, a waveguide (174b), and a probe sensor (176). The transceiver generates a microwave energy signal having a first waveguide mode and a different second waveguide mode. The waveguide (174b) includes a first end that receives the microwave energy signal. The probe sensor (176) includes a proximate end (178a) that receives the microwave energy signal from the transceiver and a distal end (178b) including an aperture that outputs the microwave energy signal. The probe sensor (176) directs the microwave energy signal at a first direction based on the first waveguide mode and a different second direction different based on the second waveguide mode. The probe sensor (176) receives different levels of reflected microwave energy based at least in part on a location at which the at least one microwave energy signal is reflected from the machine.