Geometrical instruments – Distance measuring – Scale reading position sensor
Patent
1990-01-25
1991-04-30
Cuchlinski, Jr., William A.
Geometrical instruments
Distance measuring
Scale reading position sensor
33707, 250237G, 356373, G01B 1104
Patent
active
050106554
ABSTRACT:
A scale member is provided with a scale, which can be optoelectronically scanned. In association with that scale, a scanning unit is provided, which comprises scanning sets for generating measured-value signals, and an evaluating unit is provided for deriving digital countable signals from said measured-value signals. A reference track comprising a plurality of reference marks is provided on the scale member and is parallel to the scale and the scanning unit comprises scanning sets for scanning the reference track. A control circuit is provided, which permits a generation or delivery of reference pulses only in response to the scanning of selected ones of the reference marks. To permit such selection, the scale member is provided with a control track, which can be scanned by the same method as the scale and the reference marks and which has a signal-generating characteristic which varies along the scale so that a signals have different levels are generated by an associated scanning set. The reference signal delivering circuit 17 will not be enabled to deliver a reference pulse unless the level which currently appears at the scanning set associated with the control track is equal to a level which has been preselected by a level adjuster.
REFERENCES:
patent: 3708681 (1973-01-01), Ivers
patent: 4101764 (1978-07-01), Nelle
patent: 4363964 (1982-12-01), Schmitt
patent: 4477189 (1984-10-01), Ernst
patent: 4731530 (1988-03-01), Mikan
patent: 4874941 (1989-10-01), Spillman, Jr.
patent: 4928008 (1990-05-01), Huggins et al.
Rieder Heinz
Schwaiger Max
Cuchlinski Jr. William A.
Kelman Kurt
Sentop Rieder und Schwaiger Gesellschaft m.b.H.
Wirthlin Alvin
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