Abstract: In a device and a method for coordinate measurement, a probe head generates a switching signal in response to contact with a workpiece. The device includes position-measuring units for each coordinate axis to be measured, with the aid of which the relative position of the probe head is measurable; and a processing unit, which operates in a discrete-time manner in time intervals of a controller clock signal. For coordinate measurement, position-measuring values are measured in time intervals of a probing clock signal, which is generated by a probing clock generator and has a higher frequency than a controller clock signal of a processing unit. The position-measuring values are stored in a position-data memory. A time span between a pulse of the controller clock signal and the occurrence of the switching signal at the switching probe head is measured in a time-measuring unit.

Abstract: In a device and a method for coordinate measurement, a probe head generates a switching signal in response to contact with a workpiece. The device includes position-measuring units for each coordinate axis to be measured, with the aid of which the relative position of the probe head is measurable; and a processing unit, which operates in a discrete-time manner in time intervals of a controller clock signal. For coordinate measurement, position-measuring values are measured in time intervals of a probing clock signal, which is generated by a probing clock generator and has a higher frequency than a controller clock signal of a processing unit. The position-measuring values are stored in a position-data memory. A time span between a pulse of the controller clock signal and the occurrence of the switching signal at the switching probe head is measured in a time-measuring unit.

Abstract: A position measuring device including a detector unit that generates position-dependent scanning signals and a transmitting unit that transmits instantaneous values of the position-dependent scanning signals in a preset scanning clock pulse. A processing unit that establishes a resulting measured position value by filtering instantaneous values of several scanning clock pulses and an interface which, on the basis of a transmission clock pulse transmits the resulting measured position value to a sequential electronic unit via a serial data line.

Abstract: A position measuring device including a detector unit that generates position-dependent scanning signals and a transmitting unit that transmits instantaneous values of the position-dependent scanning signals in a preset scanning clock pulse. A processing unit that establishes a resulting measured position value by filtering instantaneous values of several scanning clock pulses and an interface which, on the basis of a transmission clock pulse transmits the resulting measured position value to a sequential electronic unit via a serial data line.

Abstract: A touch probe system that includes a receiver and a probe head that has a probe element positioned in a work space and a transmitter that transmits signals to the receiver. A rotating mechanism connected to the probe head for rotating the probe head around an axis in case of a change of position of the probe head within the work space so that the receiver receives signals from the transmitter even after the change of position.

Abstract: A touch probe system that includes a receiver and a probe head that has a probe element positioned in a work space and a transmitter that transmits signals to the receiver. A rotating mechanism connected to the probe head for rotating the probe head around an axis in case of a change of position of the probe head within the work space so that the receiver receives signals from the transmitter even after the change of position.

Abstract: A method for operating a position measuring system and a suitable position measuring system in which after the onset of measurement incremental signals relating to the relative position of two parts movable relative to one another are generated by the position measuring system and transmitted to an evaluation unit in serial form at predetermined sampling times. Beyond a known, defined absolute position of the two parts movable relative to one another, absolute position signals are transmitted in serial form to the evaluation unit at the predetermined sampling times. It is also possible to ascertain a differential position value from the position data, which indicates the difference, occurring in the preceding sampling interval, between the most recently determined relative position value and the first absolute position value.

Abstract: A method for operating a position measuring system and a suitable position measuring system in which after the onset of measurement incremental signals relating to the relative position of two parts movable relative to one another are generated by the position measuring system and transmitted to an evaluation unit in serial form at predetermined sampling times. Beyond a known, defined absolute position of the two parts movable relative to one another, absolute position signals are transmitted in serial form to the evaluation unit at the predetermined sampling times. It is also possible to ascertain a differential position value from the position data, which indicates the difference, occurring in the preceding sampling interval, between the most recently determined relative position value and the first absolute position value.

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.

Abstract: A position measuring system for the determination of the relative positions of two objects which can be moved with respect to each other, as well as a process for operating the same are disclosed, which in case of a relative movement provides at least one pair of phase-shifted analog incremental signals, and which makes possible a definite variation of the signal periods (SP) by at least one signal period variation factor (n) of the analog incremental signals transmitted to an evaluation unit arranged behind it by a signal period variation unit. The signal period variation unit furthermore comprises correction means for eliminating most varied errors in the output signals (SIN′, COS′). Among these are counted errors possibly resulting during the signal period variation, as well as measurement arrangement-specific errors.

Abstract: A method for position determination of a rotating drive element with the aid of a measuring system is indicated, which comprises an absolute and an incremental measuring subsystem. Here, following the start of a rotary movement, absolute position measurement values are continuously determined and transmitted to a subordinated evaluation unit until a reference marking at a known absolute position has been reached. A comparison of the measurement values, known from the continuing absolute position measurement, with the known absolute position and, if required, a necessary correction, take place at the reference marking. Thereafter the reference marking is used as the reference position for the incremental measuring subsystem, the continuously absolute position is determined on the part of the measuring system and is transmitted in digital form to the evaluation unit (FIG. 1).

Abstract: A position measuring system for the determination of the relative positions of two objects which can be moved with respect to each other, as well as a process for operating the same are disclosed, which in case of a relative movement provides at least one pair of phase-shifted analog incremental signals, and which makes possible a definite variation of the signal periods (SP) by at least one signal period variation factor (n) of the analog incremental signals transmitted to an evaluation unit arranged behind it by a signal period variation unit. The signal period variation unit furthermore comprises correction means for eliminating most varied errors in the output signals (SIN', COS'). Among these are counted errors possibly resulting during the signal period variation, as well as measurement arrangement-specific errors.

Abstract: A scanning unit for an optical position-measuring apparatus with a flexible printed circuit that electrically couples several electronic components. Among the components is at least one optoelectronic detector element or a radiation source that is suitable for the generation of shift-dependent modulated optical scanning signals from the scanning of a scale graduation structure. The radiation-sensitive detector face or the light-emitting face of the radiation source is oriented in the direction towards the flexible printed circuit. The flexible printed circuit has at least partially transparent recesses at least in a partial area of the radiation-sensitive detector face or the light-emitting face of the radiation source, a scanning graduation or transmitting graduation is disposed that in cooperation with the scale graduation structure makes possible the generation of position-dependent modulated scanning signals.

Abstract: The invention concerns a device and a method for serial data transmission. In the position measuring device there is provided a memory, in which specific parameters of the position measuring device are kept. These parameters can be sent on the data line to a processing unit, by which the measurement values are transmitted during the position measurement. By receiving the parameters, the processing unit is adjusted to the connected position measuring device.