摘要:
System for timely detection, monitoring and alerting of reduction in the air pressure in the road-engaging tires of a vehicle is provided. The system employs a post (15), at least partly made of resiliently bendable material and adapted to touch the road surface and to generate a signal, corresponding to the current distance between the road surface and the vehicle. If the current distance reduces and is not restored to the value, corresponding to the normally inflated condition of the tire, thus appropriate signal is generated to warn the driver.
摘要:
An apparatus, method, and computer program product for monitoring a tire are provided. An apparatus comprises a laser system comprising a number of lasers configured to identify a radius of a tire of a vehicle located on a ground, wherein a laser in the number of lasers is associated with an axle of the tire. The apparatus also comprises a tire monitoring system configured to identify a set of acceptable radii for the tire using a weight of the vehicle and information about the tire, determine whether the radius of the tire is within the set of acceptable radii, and generate an indication that the radius of the tire is not within the set of acceptable radii comprising the radius of the tire responsive to an absence of a determination that the radius of the tire is within the set of acceptable radii.
摘要:
The invention relates to an apparatus for measuring the pressure of a tire on a moving vehicle, comprising measuring means (14, 18, 24) which are provided on or inside a floor or ground so as to interact with the tire and which generate an electronically analyzable measurement signal in reaction to the tire driving over the measuring means, and analysis means (22, 40) which output a tire pressure signal corresponding to the tire pressure in reaction to the measurement signal. The measuring means include optical capturing means (18) for acquiring a tire width as the width of a tire footprint forming when the tire drives over the floor/ground. The analysis means are designed to determine a footprint length from a series of tire width data generated by the optical capturing means and/or from a pattern of a pressure measurement signal generated by the measuring means and to determine the tire pressure from a footprint area calculated as a function of the length and width of the footprint and from a force applied to the footprint area by the tire.
摘要:
Système de caractérisation pour véhicule, comportant un dispositif de mesure de déformation (1) pour mesurer une déformation instantanée dudit pneumatique (6) de ladite roue (5), ledit dispositif de mesure de déformation étant destiné à être connecté à un moyen de traitement apte à déterminer une contrainte exercée sur ledit pneumatique en fonction de la déformation, ledit système de caractérisation comportant un circuit électrique de mesure comportant des éléments conducteurs (11, 12), chacun desdits éléments conducteurs étant disposé sur le pneumatique d'une roue, ledit circuit électrique étant apte à permettre la mesure d'un paramètre électrique entre lesdits éléments conducteurs, ledit circuit électrique étant destiné à être connecté à un moyen de traitement apte à déterminer et à mémoriser l'impédance électrique, ledit moyen de traitement étant apte à estimer l'action dudit pneumatique sur le sol et du sol lui-même.
摘要:
An apparatus and method for monitoring parameters of a tire using a piezoelectric device is provided. The piezoelectric device is mounted as part of a tire mountable apparatus with a circumferential orientation in a tire such that that the direction defined by length of the piezoelectric device is generally aligned with the direction of rotation of the tire. This can lead to increased coupling of the piezoelectric device to changing circumferential tire shape as the piezoelectric device enters and exits the contact patch of the tire while at the same time reducing the coupling of the piezoelectric device to changing lateral tire shape. Contact patch entry and exit times from piezoelectric signals generated by the piezoelectric device can be more readily identified, leading to increased accuracy of tire parameters determined from the contact patch entry and exit times, such as tire revolution count, tire speed, and contact patch angle.