Patent · US Active

System and method for sensing position utilizing an uncalibrated surface

US7763875B2 · kind B2 · utility

6Cited by
20References
48Claims
0Family size

Inventors

Key dates

Filing dateSep 7, 2006
Grant dateJul 27, 2010
Priority date—
Expiry dateSep 7, 2026

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01V8/20
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Systems and methods adapted for use with uncalibrated patterned surfaces for sensing any of position, displacement, velocity, acceleration, area, and volume are provided. A system includes a memory, processing electronics, and at least one readhead adapted to move relative to the surface and including a radiation source, lens, and an optical array transducer. One aspect includes generating a mapping data set representative of an intensity map of the patterned surface. Another aspect provides a variable travel speed readhead. Other aspects include multiple readheads adapted to travel in concert. Incremental and absolute sensing are provided, including systems having sub-pixel spatial resolution.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.