The invention relates to tyre tread depth measurement, and in particular to a tyre tread depth measurement apparatus, and a method for operation thereof. A tread depth measurement apparatus 10 is provided for measuring a tread depth of a tyre 20. The apparatus 10 comprises a body 12 having a measurement device 22 for measuring the tread depth. The body 12 further includes an electronic sensor device 28 to determine an orientation of the measurement device 22 relative to a rolling surface 18 of the tyre 20 to provide the tread depth measurement substantially along a normal (40, figure 3) to the rolling surface 18. The electronic sensor device 28 may be: an inductor circuit using inductor values, eddy current losses, Q factors; magnet; capacitor circuit may have a colpitts oscillator; light level sensor circuit; at least one photomicrosensor in a circuit, measuring displacement of a pin, they may surround the measurement device 22; a strain sensor circuit to sense deformation. The circuits may sense a proximity to metal, rubber or the tyre in general. The body 12 may include lights (36, figure 2) for illumination of the tire 20.
Tyre tread depth measurement
03.05.2017
Patent
Elektronische Ressource
Englisch
IPC: | G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B60C VEHICLE TYRES , Fahrzeugreifen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |