Abstract: A detector arrangement, for selective detection of vibrations on a component, comprises a film fitted with at least one piezoelectric element. The film is attached to the component in such a way that occurring mechanical vibrations act on the piezoelectric element, such that an electrical charge with a frequency correlating with the mechanical vibration is generated at the connection electrodes of the piezoelectric element. An electrical filter is connected to the piezoelectric element and filters out the component of the supplied charge which corresponds to a predefined frequency. An electrical charge storage means which is connected to the filter is used to accumulate the filtered-out charge components. A signaling means is also provided, which generates an electrical signal as soon as a predetermined charge limit value is reached on the charge storage means.

Abstract: A detector arrangement, for selective detection of vibrations on a component, comprises a film fitted with at least one piezoelectric element. The film is attached to the component in such a way that occurring mechanical vibrations act on the piezoelectric element, such that an electrical charge with a frequency correlating with the mechanical vibration is generated at the connection electrodes of the piezoelectric element. An electrical filter is connected to the piezoelectric element and filters out the component of the supplied charge which corresponds to a predefined frequency. An electrical charge storage means which is connected to the filter is used to accumulate the filtered-out charge components. A signaling means is also provided, which generates an electrical signal as soon as a predetermined charge limit value is reached on the charge storage means.

Abstract: An apparatus for monitoring a machine element (02), which moves with respect to a base and rotates about its own axis, having a sensor (06) and evaluation electronics (09). According to the invention, the sensor (06) and the evaluation electronics (09) and also a power supply unit and a transmitter unit (12) are arranged on the moving machine element (02).

Abstract: An apparatus for monitoring a machine element (02), which moves with respect to a base and rotates about its own axis, having a sensor (06) and evaluation electronics (09). According to the invention, the sensor (06) and the evaluation electronics (09) and also a power supply unit and a transmitter unit (12) are arranged on the moving machine element (02).

Abstract: A method for representing a state of at least one component of an apparatus, where measurements are conducted for the at least one component, a number of quantities are measured and at least one acquired characteristic value for the number of quantities is represented in at least one two-dimensional coordinate system for representing the state as a vector. Further, a system for representing a state of at least one component of an apparatus, to a computer program, and to a computer program product is disclosed.

Abstract: A measuring system for structure-born noise measurement of machine elements in machine housings. The measuring system is fixed to the machine housing via a lubrication hold opening. A mounting pin with a continuous bore hole. A housing receives a printed circuit board provided with electronic components for signal evaluation. A vibration snesor and vibration sensor housing rotationally mounted in relation to the mounting pin when the mounting pin is screwed into the lubrication hold opening. The vibration sensor housing is rotationally fixed to the machine housing in a non-positive fit via a metal bushing when the mounting pin is screwed in an end position. The vibration sensor is located adjacent to the metal bushing whereby structure-born noise is directly transferred from the machine housing to the vibration sensor via the metal bushing.