A shock sensor (20; 58) has a housing (27) with a Terfenol-D type sensing element (22; 76) positioned inside a sensing coil (26; 74). A permanent biasing magnet (24) is positioned in engagement with the Terfenol-D sensing element (22; 76), and a spacer engages the Terfenol-D sensing element (22; 76) and extends from the housing (27). The housing (27) has a beam (34; 64) with one or two mounting holes through which fasteners (52) extend to mount the shock sensor (20; 58) to a structural element (54). The housing (27) places the spacer in compression against the structural element (54). In an alternative embodiment a DC current (72) can be supplied to the sensing coil (26; 74) to provide the biasing magnetic field. A high frequency filter (78) separates the shock sensing signal from the applied DC biasing current.
Magnetostrictive shockwave sensor
Magnetostriktiever Stosswellensensor
Détecteur d'ondes de choc à magnétostriction
2019-08-21
Patent
Elektronische Ressource
Englisch
IPC: | G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes |