Motion measuring device using specialized coding
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United States of America Patent
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Feb 16, 1988
Grant Date -
N/A
app pub date -
Feb 20, 1986
filing date -
Feb 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A motion measurement device, more particularly designed for measurement of a rotation of a body around an axis. This device comprises a coded wheel drivably connected to said body for rotation and comprising a plurality of holes regularly distributed around said axis. Said holes are binary digits and for one digit is constituted by a simple hole passing through the wheel and, for the other, an open hole connected to the nearest edge of said wheel by a narrow slit. A sensor placed on the path of the holes and comprising two coils facing one another allows determination of the distance travelled by the moving body connected to said coded wheel. The speed and acceleration of the moving body can also be determined.
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