Charged Air Mass Measurement for Air Data Computation

    公开(公告)号:US20240359818A1

    公开(公告)日:2024-10-31

    申请号:US18765268

    申请日:2024-07-07

    摘要: Systems and methods for enabling charged (ionized) air mass measurement for reliable air data computation onboard an aircraft. Ionic charge sensing may be used to derive air data having improved reliability. The systems and methods for ionic charge sensing employ an emitter electrode and two or more collector electrodes, which electrodes are disposed in proximity to the exterior skin of the aircraft and exposed to ambient air. The emitter electrode is positioned forward of the collector electrodes. The system further includes a solid-state ionic air data module that converts currents from the collector electrodes into air data parameter values. More specifically, the ionic air data module is configured to sense currents induced in the collector electrodes in response to corona discharge produced by the high-voltage emitter electrode.

    Circuit device, electronic device, physical quantity sensor, and vehicle

    公开(公告)号:US09876492B1

    公开(公告)日:2018-01-23

    申请号:US15656449

    申请日:2017-07-21

    发明人: Hideo Haneda

    摘要: A circuit device includes a comparator and a flag signal generation circuit. The comparator includes a first voltage-time conversion circuit to which at least a first input signal is input and which outputs a first time information signal, a second voltage-time conversion circuit to which at least a second input signal is input and which outputs a second time information signal, and a determination circuit that determines magnitude relation of the first input signal and the second input signal, based on the first time information signal and the second time information signal. The flag signal generation circuit generates a flag signal indicating that a voltage difference between the first input signal and the second input signal is a predetermined voltage or less, based on the first time information signal and the second time information signal.