Patent ID: 9057658
Filing Date: 2015-06-16
Classification: G01G,G01L

Abstract:
1. A method of checking the inflation pressure of a vehicle tyre whilst moving the tyre in a direction of travel over a sensor array extending in a lateral direction with respect to the direction of travel, wherein the sensor array includes a plurality of laterally spaced sensor members each of which is elongate and extends from a first end to a second end in a longitudinal direction which extends sideways from said lateral direction, so that loads are applied to different positions along the sensor member as the tyre moves over the array; wherein each sensor member is provided with a respective load sensing system which provides an output representing the load on the sensor member as a tyre moves over the array, and there is provided a processing module which processes outputs from the load sensing systems of the sensor members and provides data representing the pressure of the tyre; and wherein the sensitivity of each sensor member increases from a minimum for a load applied at the first end of the sensor member, to a maximum for a load applied at the second end of the sensor member.