	US 12,203,785 B2
	Measuring system and pressure medium cylinder comprising a measuring system
Leo Caspers, En Eindhoven (NL)
Assigned to Van Halteren Technologies Boxtel B.V., Boxtel (NL)
Appl. No. 18/008,063
Filed by Van Halteren Technologies Boxtel B.V., Boxtel (NL)
PCT Filed Jun. 8, 2021, PCT No. PCT/EP2021/065332 § 371(c)(1), (2) Date Dec. 2, 2022, PCT Pub. No. WO2021/250021, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 102020207280.9 (DE), filed on Jun. 10, 2020.
Prior Publication US 2023/0265869 A1, Aug. 24, 2023
Int. Cl. H03M 1/22 (2006.01); G01D 5/249 (2006.01); F15B 15/28 (2006.01)

CPC G01D 5/2492 (2013.01) [F15B 15/2846 (2013.01); G01D 2205/10 (2021.05)]

12 Claims

1. A measuring system for determining the position of a piston rod of a pressure medium cylinder relative to a reference point, wherein the measuring system has a code track that is applied to the piston rod, runs along the piston rod, and is formed by grooves and plateaus running in the circumferential direction in a base material of the piston rod, and wherein the measuring system has at least a first sensor system that is stationary relative to the reference point and has a plurality of sensor elements that are arranged parallel to and radially spaced apart from the piston rod, and wherein each sensor element scans a limited number of code elements, characterized in that, to form the code track, at least trinary code elements are used, which form a De Bruijn sequence and/or a De Bruijn subsequence.