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 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 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: A system for calibrating a test vibration transducer having at least one vibration measurement channel, including a vibration generator, a reference vibration transducer, a fastening device for rigidly coupling the reference vibration transducer to the test vibration transducer, in order to set the reference vibration transducer and the test vibration transducer into vibrations jointly. The vibration generator, and an analysis unit, wherein the reference vibration transducer is designed to output a corresponding reference measurement channel for each vibration measurement channel of the test vibration transducer and also at least one additional reference measurement channel for an additional degree of freedom to the analysis unit. The analysis unit has an input for each vibration measurement channel of the test vibration transducer and is designed to offset the vibration measurement signals of the test vibration transducer with the reference signals.

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 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: A sensor arrangement (10) includes a sensor (11) for a mechanical quantity or a thermal quantity, a processing circuit (12), which is connected at the input end to the sensor (11) and provides an output signal (SRF), which is processed for wireless transmission, and a cable (13), which is coupled to the processing circuit (12), to which the output signal (SRF) or a signal derived from the output signal (SRF) is supplied and which delivers a power supply to the processing circuit.

Abstract: The invention relates to a coupling device for connecting a first shaft (10) to a second shaft (12) by means of two flanges (16, 18, 22, 24) that are meshed with one another, wherein the flanges are provided or designed with means (30, 32, 111, 211, 311, 317, 319, 321) of enabling the axial and/or radial relative misadjustment thereof due to a misalignment of the shafts to be visually observed. According to one variant, at least one of the flanges or an element (20, 26) meshed with the two flanges is provided with at least one transducer (50, 60, 70, 80, 90, 94) for generating an electrical signal and/or acoustic signal from a mechanical movement, wherein said transducer is designed to generate the signal on the basis of a periodic movement of the flanges relative to one another, at least if the relative movement of the two shafts to one another, which occurs as the shafts rotate due to misalignment of said shafts, exceeds a certain value.

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: A method for measuring vibrations in which gravity forces and acceleration forces resulting from machine vibrations are measured using an accelerometer/inclinometer sensor coupled to a non-rotating part of a rotating machine, the orientation of the sensor with regard to the direction of action of the gravity forces is determined from a stationary component of sensor output, and non-stationary components of sensor output are evaluated based upon the determined sensor orientation. Both the result of the alignment process and also the result of the vibration measurement are communicated to the user as an easily understandable characteristic on a display of an evaluation unit.

Abstract: A measuring device and system including at least one transmitting part which can be attached to measurement objects and which has at least one data memory and at least two first electrical contacts having respective surfaces that form respective sub-areas of a bearing face of the transmitting part, at least one data reading part which has at least two second electrical contacts having respective surfaces that form respective sub-areas of a bearing face of the data reading part, and at least one magnet. The measuring device is designed to assume an uncoupled state in which the first electrical contacts are at a distance from the second electrical contacts, and to assume a coupled state in which the data reading part and the transmitting part are coupled to one another due to an attraction force brought about by the magnet.

Abstract: Method for determining a characteristic for the quality of alignment of a rotating machine, by obtaining vibration data with at least one vibration sensor, and using the vibration data obtained with the vibration sensor to determine a characteristic for the quality of alignment. Furthermore, alignment data obtained from first and second optoelectronic units is used in addition to the vibration data obtained with the at least one vibration sensor to produce a combination value from which both an instantaneous vibration state and success of the alignment can be determined.

Abstract: A device for the evaluation of vibrations (10) comprises an evaluating device (12), which comprises an input for introducing a vibration signal (SG) and is designed to determine a characteristic signal (BK) with the dimension of length/time? and/or the square (SE) of the characteristic signal (BK) from the vibration signal (SG) by means of a frequency-dependent evaluation of the vibration signal (SG). For a predefined value of a dimensional exponent ?, 1.3<?<1.7, a vibration sensor (11) of the device (10) outputs the vibration signal (SG). An RMS value (BEF) of the characteristic signal (BK) or the square (SE) of the characteristic signal (BK) essentially corresponds to the damaging effect of the vibrations on a structure or a machine. The square (SE) can be converted into a service life (T) according to the equation T=KB/SE and displayed.

Abstract: An alignment device with one or two optoelectronic transmitting and/or receiving units and an evaluation unit. At least one optoelectronic transmitting and/or receiving unit contains an inclinometer. Furthermore, the transmitting and/or receiving unit is connected to a vibration sensor which can be the inclinometer. Both the result of the alignment process and also the result of the vibration measurement are communicated to the user as an easily understandable characteristic on a display of the evaluation unit. For vibration measurement at a non-rotating part of a machine, an accelerometer/inclinometer sensor may be used for measuring acceleration forces resulting from machine vibrations to be measured and for measuring gravity and an electronic evaluation unit determining the orientation of the sensor with regard to gravity from a stationary component of the sensor output and determining sensor orientation from evaluation of non-stationary components of sensor output.

Abstract: A device for determining the position of a first mechanical element relative to a second mechanical element, having a first measurement unit for attachment to the first mechanical element, a second measurement unit for attachment to the second mechanical element, and an evaluation unit. The first measurement unit emits spectrally differing first and second light beams in essentially the same direction and a position-sensitive optical detector. The second measurement unit has a reflector arrangement facing the first measurement unit, in order to reflect the first and second light beams onto the detector. Surfaces facing the first measurement unit being color splitters having different reflectivity/transmissibility for the first light beam and the second light beam. The evaluation unit determines the location of the first and second mechanical elements relative to one another from the incidence positions of the reflected first and second light beams on the detector.

Abstract: A sensor arrangement (10) has a vibration sensor (11), which includes a cable (13) and is free of a metal housing, and a holding device (12), which is joined detachably to the vibration sensor (11) and is configured and arranged to protect mechanically and fix in place the vibration sensor (11).

Abstract: A method for measuring vibrations in which gravity forces and acceleration forces resulting from machine vibrations are measured using an accelerometer/inclinometer sensor coupled to a non-rotating part of a rotating machine, the orientation of the sensor with regard to the direction of action of the gravity forces is determined from a stationary component of sensor output, and non-stationary components of sensor output are evaluated based upon the determined sensor orientation. Both the result of the alignment process and also the result of the vibration measurement are communicated to the user as an easily understandable characteristic on a display of an evaluation unit.

Abstract: The invention relates to a coupling device for connecting a first shaft (10) to a second shaft (12) by means of two flanges (16, 18, 22, 24) that are meshed with one another, wherein the flanges are provided or designed with means (30, 32, 111, 211, 311, 317, 319, 321) of enabling the axial and/or radial relative misadjustment thereof due to a misalignment of the shafts to be visually observed. According to one variant, at least one of the flanges or an element (20, 26) meshed with the two flanges is provided with at least one transducer (50, 60, 70, 80, 90, 94) for generating an electrical signal and/or acoustic signal from a mechanical movement, wherein said transducer is designed to generate the signal on the basis of a periodic movement of the flanges relative to one another, at least if the relative movement of the two shafts to one another, which occurs as the shafts rotate due to misalignment of said shafts, exceeds a certain value.