Absolute position sensor with serial reading
AssigneeRENAULT s.a.s.
InventorsLaurent Albert, Christophe Dang Van Nhan
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Abstract
An absolute position sensor with serial reading, that includes at least one detector capable of detecting transitions in a target pattern present on a member mobile relative to the detector. The sensor includes a shift register capable of storing a predetermined number of consecutive data from the detector, and a mechanism comparing the value of the register to a set of predetermined values each corresponding to a position of the detector relative to the target pattern.
Claims20
An absolute-position sensor with serial reading comprising:
- at least one detector configured to detect transitions of a target pattern present on a member that can move relative to the detector;
- a shift register configured to register a predetermined number of successive items of information originating from the detector introduced into only one end of the shift register for all directions of relative motion between the target pattern and the detector;
- and
- means for comparing a value of the register relative to a set of predetermined values each corresponding to a position of the detector relative to the target pattern.
An absolute-position sensor with serial reading comprising:
- a single detector configured to detect transitions of a single target pattern present on a member that can move relative to the detector, the single target pattern being coded to include a clock signal;
- a shift register configured to register a predetermined number of successive items of information originating from the detector introduced into only one end of the shift register for all directions of relative motion between the target pattern and the detector;
- and
- a device configured to compare a value of the register relative to a set of predetermined values each corresponding to a position of the detector relative to the target pattern.
An absolute-position sensor with serial reading comprising:
- at least one detector configured to detect transitions of a target pattern present on a member that can move relative to the detector;
- at least one detector configured to detect periodic transitions of a first additional pattern, the period of which is equal to a smallest period of the target pattern;
- at least one detector configured to detect periodic transitions of a second additional pattern phase-shifted from the first additional pattern;
- a shift register configured to register a predetermined number of successive items of information originating from the detector introduced into only one end of the shift register for all directions of relative motion between the target pattern and the detector;
- and
- a device configured to compare a value of the register relative to a set of predetermined values each corresponding to a position of the detector relative to the target pattern.
Dependencies are inferred from the claim text.