Shock sensor and devices to which the latter is applied
AssigneeSociete Nationale Industrielle et Aerospatiale
InventorsJean-Pierre Dumont, Riviere Daniel
Life of this patent
Estimating the term…
Abstract
Shock or impact sensor which can be fixed to a structure (14) comprising, along a longitudinal axis (AL) perpendicular to the structure (14), a rod (12) which can be joined to the structure (14) by a first end (16), a weight or counterweight (24) joined to a second end of the rod (12) and acceleration detection fixed to weight or counterweight (24) to detect acceleration along an axis perpendicular to the longitudinal axis of the sensor.
Claims11
A shock sensor for attachment to a structure and having a fundamental resonant frequency, said sensor comprising:
- a rod having a first end, a second end and a longitudinal axis, said first end being attachable to said structure;
- a weight attached to said second end;
- acceleration detection means attached to said weight for detecting vibrations along an axis perpendicular to said longitudinal axis;
- and
- means to remove a plurality of harmonics of said fundamental resonant frequency from said vibrations.
A gyrometer for measuring a rotation, comprising:
- a support;
- a first and a second sensor, each sensor having a fundamental resonant frequency and including:
- a rod having a first end, a second end and a longitudinal axis, said first end being attached to said support and said rod having a groove near said first end;
- a weight attached to said second end;
- and
- acceleration detection means attached to said weight for detecting vibrations along an axis perpendicular to said longitudinal axis;
- said first and second sensor first ends being spaced apart;
- and
- means for measuring a velocity for each sensor first end and combining said velocities to provide a measure of said rotation.
Dependencies are inferred from the claim text.