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1. 发明授权

US11566917B2 Single-track magnetic encoding 有权
公开(公告)号：US11566917B2
公开(公告)日：2023-01-31
申请号：US17284312
申请日：2019-10-09
申请人： SRI International
发明人： Paolo Sechi , Alan Leong
IPC分类号： G01D5/14
摘要： A system includes a substrate, a first and a second magnetic field sensor, and a computing device communicatively coupled to the first and second magnetic field sensors. The substrate has a surface encoded with a magnetic pattern sequenced along a direction of movement of the substrate. The magnetic pattern includes a data pattern that indicates a position of the substrate along the direction of movement and a clock pattern interleaved and substantially colinear with the data pattern that indicates a plurality of clock transitions. The computing device is configured to receive, from the first and second magnetic field sensors positioned above the magnetic pattern, a plurality of magnetic field signals detected from the magnetic pattern. The computing device is configured to determine, based on the plurality of magnetic field signals, the position of the substrate and output the position of the substrate.

2. 发明申请

US20210364323A1 SINGLE-TRACK MAGNETIC ENCODING 有权
公开(公告)号：US20210364323A1
公开(公告)日：2021-11-25
申请号：US17284312
申请日：2019-10-09
申请人： SRI International
发明人： Paolo Sechi , Alan Leong
IPC分类号： G01D5/14
摘要： A system includes a substrate, a first and a second magnetic field sensor, and a computing device communicatively coupled to the first and second magnetic field sensors. The substrate has a surface encoded with a magnetic pattern sequenced along a direction of movement of the substrate. The magnetic pattern includes a data pattern that indicates a position of the substrate along the direction of movement and a clock pattern interleaved and substantially colinear with the data pattern that indicates a plurality of clock transitions. The computing device is configured to receive, from the first and second magnetic field sensors positioned above the magnetic pattern, a plurality of magnetic field signals detected from the magnetic pattern. The computing device is configured to determine, based on the plurality of magnetic field signals, the position of the substrate and output the position of the substrate.

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