Method and apparatus for transmitting data between a position measuring system and an evaluation unit
AssigneeDr. Johannes Heidenhain GmbH
InventorRainer Hagl
Life of this patent
Estimating the term…
Abstract
A method for transmitting data between a position measuring system and an evaluating unit that includes the steps of generating a system-specific parameter, transmitting the system specific parameter between a position measuring system and an evaluating unit over at least one supply line.
Claims60
A method for transmitting data between a position measuring system and an evaluating unit, the method comprising the steps of:
- preparing a system-specific parameter that is a characteristic parameter of a position measuring system that determines the position of two parts movable relative to one another;
- transmitting said system specific parameter between said position measuring system and an evaluating unit over at least one power supply line that supplies electrical power to said position measuring system so that said system specific parameter is transmitted along an electrically conductive path that is identical to an electrically conductive path upon which said supplied power follows.
An apparatus for transmitting data between a position measuring system and an evaluating unit, the apparatus comprising:
- a position measuring system that determines the position of two parts movable relative to one another;
- an evaluating unit;
- at least one power supply line said position measuring system and said evaluating unit;
- wherein said at least one power supply line supplies electrical power to said position measuring system;
- a modulator unit connected to said at least one power supply line, said modulator unit prepares a system specific parameter that is transmitted over said at least one power supply line, wherein said system specific parameter is a characteristic parameter of said position measuring system and said system specific parameter is transmitted along an electrically conductive path that is identical to an electrically conductive path upon which said supplied power follows;
- and
- a demodulator unit that decouples said system specific parameter from said at least one power supply line.
An apparatus for transmitting data between a position measuring system and an evaluating unit, the apparatus comprising:
- a position measuring system that determines the position of two parts movable relative to one another;
- an evaluating unit;
- at least one power supply line that supplies electrical power to said position measuring system and said evaluating unit;
- wherein at least two signal transmission lines are disposed between said position measuring system and said evaluating unit, over which said at least two signal transmission lines two phase-offset incremental signals can be transmitted from said position measuring system to said evaluating unit;
- a modulator unit connected to said at least one power supply line, said modulator unit prepares a system specific parameter that is transmitted over said at least one power supply line, wherein said system specific parameter is significant for a planned measurement mode of said position measuring system and said system specific parameter is transmitted along an electrically conductive path that is identical to an electrically conductive path upon which said supplied power follows;
- and
- a demodulator unit that decouples said system specific parameter from said at least one power supply line.
A method for transmitting data between a position measuring system and an evaluating unit, the method comprising the steps of:
- preparing a system-specific parameter that is significant for a planned measurement mode of a position measuring system that determines the position of two parts movable relative to one another;
- transmitting said system specific parameter between said position measuring system and an evaluating unit over at least one power supply line that supplies electrical power to said position measuring system, wherein said system specific parameter is transmitted along an electrically conductive path that is identical to an electrically conductive path upon which said supplied power follows.
A method for transmitting data between a position measuring system and an evaluating unit, the method comprising the steps of:
- preparing a system-specific parameter;
- transmitting said system specific parameter between a position measuring system that determines the position of two parts movable relative to one another and an evaluating unit over at least one power supply line that supplies electrical power to said position measuring system, wherein said preparing and transmitting steps are performed prior to said position measuring system performing a measurement that determines said position, wherein said system specific parameter is transmitted along an electrically conductive path that is identical to an electrically conductive path upon which said supplied power follows.
Dependencies are inferred from the claim text.