Filling level monitoring device for a fluid gas container, hydrogen tank and aircraft comprising such hydrogen tank

    公开(公告)号:US11988542B2

    公开(公告)日:2024-05-21

    申请号:US17744201

    申请日:2022-05-13

    CPC classification number: G01F23/2966

    Abstract: A filling level monitoring device for monitoring a filling level of a fluid in a container includes exciter(s), sensor(s), a signal source connected to the exciter(s), a processor, at least one spatial orientation and acceleration sensor, and a filling level indicator. The device uses the signal source and the exciter(s) to couple vibrational loads having multiple frequency components into the container. Sensors measure vibrations in the container after the exciters transmit the vibrational loads into the container. The processor performs spectral analysis of the input signal and of vibration signals from the sensors, comparing these respective spectral functions to extract resonance frequencies of the container, which are based on the spatial orientation of the container. The filling level indicator calculates a current filling level of the container from the extracted resonance frequencies and a spatial orientation signal from a spatial orientation sensor by correlating the collected data with reference data.

    Radio channel access on board aircraft

    公开(公告)号:US10212748B2

    公开(公告)日:2019-02-19

    申请号:US14806837

    申请日:2015-07-23

    Abstract: This relates to wireless communication on-board aircraft. More particularly, the present disclosure relates to a method for controlling an on-board aircraft network cell to be used in an on-board aircraft wireless communication network, to such an on-board aircraft network cell configured to be used in an on-board aircraft wireless communication network, to an on-board aircraft wireless communication network comprising at least one such on-board aircraft network cell, and to an aircraft comprising such on-board aircraft wireless communication network. An embodiment of the on-board aircraft network cell comprises at least one Wireless Module unit, at least two Wireless Data Concentrator units, and at least two independent wireless links, each wireless link being established between the at least one Wireless Module unit and one of the at least two Wireless Data Concentrator units.

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