Abstract: A mobile transportation apparatus for transporting at least one data collector to at least one data collection position has at least one set-down apparatus for setting down the data collector at the data collection position and at least one receiving apparatus for receiving data which the data collector transmits to the transportation apparatus. Accordingly, a data collection system has at least one mobile transportation apparatus and at least one data collector. In a data collection method, at least one data collector is transported to at least one data collection position by way of at least one mobile transportation apparatus and is set down at the said data collection position by a set-down apparatus of the transportation apparatus, the data collector which is arranged at the data collection position collects data, and the collected data is transmitted to the transportation apparatus by the data collector.

Abstract: In a method for obtaining information from a coding body (1, 15), information is assigned to a three-dimensional form of at least one portion of the coding body (1, 15), at least one two-dimensional image of at least the portion of the coding body (1, 15) is generated, the form of the portion is identified on the basis of the image and the information that has been assigned to the identified form is accessed. A corresponding system comprises: at least one coding body (1, 15) having at least one portion with a three-dimensional form that has information assigned; at least one image-capture means (8, 19, 24) for generating two-dimensional images; and at least one processor (9, 21, 25) configured to identify the form of the portion on the basis of at least one two-dimensional image of at least the portion of the coding body (1, 15) and to access the information assigned to the identified form.

Abstract: The invention relates to a system for remotely interrogating sensor units for machine monitoring, comprising a measuring device and a plurality of sensor units which are connected in parallel with one another and are connected to the measuring device via a common line in order to transmit sensor measurement signals as an analog signal from the sensor unit to the measuring device and in order to receive a digital query signal from the measuring device, wherein the control unit operates the switch depending on the digital query signal in order to switch the analog measurement signal onto the line, wherein, at each time, only at most one of the sensor units can switch its analog measurement signal onto the line, and wherein the analog measurement signal is in the form of a current signal and the digital query signal is in the form of a voltage signal.

Abstract: The invention relates to an apparatus for vibration measurement on a machine, having a base plate for mounting on a measurement point of the machine, a magnetic retaining device for holding the base plate at the measurement point by magnetic force, a sensor for detecting vibrations, arranged on or in contact with the base plate, a sensor for detecting the magnetic flux density in the area of the retaining device, and a monitoring device for monitoring the coupling of the base plate to the measurement point by evaluating the detected magnetic flux density.

Abstract: The invention relates to a method for determining the root mean square value of a vibration variable that is measured on a machine. A test measurement is carried out in order to obtain a test signal of the vibration variable with a test signal length; the influence of shortening the signal length of the test signal on the associated root mean square value is estimated and the relative deviation of the root mean square value emerging for a shortened signal length from the root mean square value emerging for the full test signal length is estimated therefrom as a function of the signal length to obtain a root mean square value error function; and a measurement of the vibration variable is carried out for determining the root mean square value. The measurement duration of this measurement is selected on the basis of the root mean square value error function.

Abstract: The invention relates to a system for measuring vibration on a machine, with a carrier (14) for placing onto a measuring point (12) of the machine, a sensor (16) arranged on the carrier for detecting vibrations, an arrangement (16, 22, 28, 30) for detecting the electromechanical impedance of the sensor and also a monitoring device (22, 24, 26) for monitoring the current coupling of the carrier at the measuring point by means of evaluating the detected electromechanical impedance. The current coupling is in this case determined from the difference between the currently detected electromechanical impedance and the electromechanical impedance detected for a prescribed optimum coupling of the carrier to the measuring point.

Abstract: The invention relates to a system for recording and representing measurement points (M1, M2, . . . ) on a body surface, with a pair of smart glasses and a position measurement device. The pair of smart glasses has a head-up display and records one or two coordinates of each measurement point by means of a position sensor unit of the smart glasses, or, provided that one or two coordinates of a measurement point of the smart glasses is or are already known, represents graphically the position of the measurement point on the body surface in accordance with the known coordinate(s) by means of the head-up display. The position measurement device has a laser light source and an optical detector, which can be positioned at the respective measurement point on the body surface and includes a sensor surface for recording impingement points of the laser light of the laser light source.

Abstract: A device for measuring cavities has a main body, at least one first distance sensor mounted on the main body and rotatable about an axis of rotation for contactlessly measuring distances in a radial direction with respect to the axis of rotation, a holder for fixing the device within the cavity in a position in which the main body assumes an orientation in which the axis of rotation of the first distance sensor coincides substantially with a center axis of the cavity, and at least one second distance sensor, arranged on the main body, for contactlessly measuring distances in a direction parallel to the axis of rotation, the axis of rotation passing through a detection area of the second distance sensor.

Abstract: A probe device for a rotating head of a rotary system comprises at least one support arm that is mounted so as to be rotatable about an axis of rotation, at least one probe that is connected to the support arm, and at least one cable guide for guiding a probe cable. The cable guide comprises a first end portion that extends along the support arm, from the probe to the axis of rotation, and a second end portion that originates essentially at the axis of rotation.

Abstract: The invention relates to a system and to a method for determining the displacement of two bodies relative to each other, wherein the system comprises a first camera, a second camera, a first lamp, and a second lamp, wherein both the first camera and the second camera comprise an objective and an image sensor having a sensor surface.

Abstract: A measuring device is provided which, in order to measure measured variables of an object being measured, can be placed on a surface of the object being measured. The surface supports the measuring device. The measuring device comprises at least three projecting contact surfaces, the center points of which are distributed substantially uniformly along a circle. The projecting contact surfaces, when the measuring device is placed on the surface of an object being measured, lie against the surface and are supported by the surface. A first of the contact surfaces comprises a temperature sensor for measuring the surface temperature of the object being measured, while a second and a third of the contact surfaces are provided to measure respective other measured variables.

Abstract: The system for mounting a vibration transducer at a machine includes a mounting pad made from ferrous magnetic material and configured to be mounted at a measurement location of the machine; and a magnetic base comprising a transducer fixation structure configured to releasably fix a vibration transducer unit at the magnet base and a pad engagement structure configured to releasably engage with a mating engagement structure of the mounting pad so as to magnetically fix the magnet base at the mounting pad for vibration measurement. The engagement structure of the mounting pad includes at least one groove and is asymmetric in a direction orthogonal to the longitudinal direction of the at least one groove in such a manner that engagement of the engagement structure of the mounting pad to ensure proper orientation of the transducer unit with regard to the machine.

Abstract: The invention relates to a system for remotely interrogating sensor units for machine monitoring, comprising a measuring device and a plurality of sensor units which are connected in parallel with one another and are connected to the measuring device via a common line in order to transmit sensor measurement signals as an analog signal from the sensor unit to the measuring device and in order to receive a digital query signal from the measuring device, wherein the control unit operates the switch depending on the digital query signal in order to switch the analog measurement signal onto the line, wherein, at each time, only at most one of the sensor units can switch its analog measurement signal onto the line, and wherein the analog measurement signal is in the form of a current signal and the digital query signal is in the form of a voltage signal.

Abstract: A mobile transportation apparatus for transporting at least one data collector to at least one data collection position has at least one set-down apparatus for setting down the data collector at the data collection position and at least one receiving apparatus for receiving data which the data collector transmits to the transportation apparatus. Accordingly, a data collection system has at least one mobile transportation apparatus and at least one data collector. In a data collection method, at least one data collector is transported to at least one data collection position by way of at least one mobile transportation apparatus and is set down at the said data collection position by a set-down apparatus of the transportation apparatus, the data collector which is arranged at the data collection position collects data, and the collected data is transmitted to the transportation apparatus by the data collector.

Abstract: The invention relates to a method for determining the root mean square value of a vibration variable that is measured on a machine. A test measurement is carried out in order to obtain a test signal of the vibration variable with a test signal length; the influence of shortening the signal length of the test signal on the associated root mean square value is estimated and the relative deviation of the root mean square value emerging for a shortened signal length from the root mean square value emerging for the full test signal length is estimated therefrom as a function of the signal length to obtain a root mean square value error function; and a measurement of the vibration variable is carried out for determining the root mean square value. The measurement duration of this measurement is selected on the basis of the root mean square value error function.

Abstract: The invention relates to an apparatus for vibration measurement on a machine, having a base plate for mounting on a measurement point of the machine, a magnetic retaining device for holding the base plate at the measurement point by magnetic force, a sensor for detecting vibrations, arranged on or in contact with the base plate, a sensor for detecting the magnetic flux density in the area of the retaining device, and a monitoring device for monitoring the coupling of the base plate to the measurement point by evaluating the detected magnetic flux density.

Abstract: A device for measuring cavities has a main body, at least one first distance sensor mounted on the main body and rotatable about an axis of rotation for contactlessly measuring distances in a radial direction with respect to the axis of rotation, a holder for fixing the device within the cavity in a position in which the main body assumes an orientation in which the axis of rotation of the first distance sensor coincides substantially with a center axis of the cavity, and at least one second distance sensor, arranged on the main body, for contactlessly measuring distances in a direction parallel to the axis of rotation, the axis of rotation passing through a detection area of the second distance sensor.

Abstract: The method provides determining at least one speed of a machine, wherein, on the basis of the measurement of a vibration variable carried out on the machine over time, the complex spectrum of this variable is determined, wherein a frequency interpolation is carried out; boundary conditions are established for the evaluation of the spectrum, which include the permissible frequency range of an expected main speed, a set of relative frequencies with respect to the main speed in the form of frequency multipliers, and a weighting factor for the particular relative frequency; a spectral probability density is calculated with consideration for the boundary conditions, which results for each frequency of the permissible frequency range as a sum of the amplitude of the spectrum, which has been weighted with the particular weighting factor and the main speed is determined on the basis of the frequency having the maximum probability density.