POSITION SENSING OF A PISTON IN A HYDRAULIC CYLINDER USING A PHOTO IMAGE SENSOR
摘要
Described is a device and method of measuring the linear position of a piston 002 movable within a hydraulic or pneumatic cylinder barrel 001. The measuring device includes a photo optical sensing apparatus 011 mounted at the cylinder head. The photo optical sensing apparatus 011 can be located inside or outside of the cylinder 001. The sensing apparatus 011 design utilizes a typical optical sensing apparatus, and optional functional modules for determining absolute displacement, and communication. Calibration locations, which are used to obtain absolute displacement measurements, are determined by calibration images or separate sensors indicating their presence.
申请公布号
CA2718023(C)
申请公布日期
2014.02.18
申请号
CA20082718023
申请日期
2008.06.24
申请人
WEBSTER, TIMOTHY;SOLO, ASHU M.G.;WU, QING;YANG, WEN JUN