Sensor system
First Claim
1. A sensor system consisting of at least two vibration or structure-borne noise sensor devices (1), a plurality of movable machine elements (14, 36), one of said noise sensor devices (1) mounted on one of said movable machine elements (14, 36) and another of said noise sensor devices (1) mounted on another of said movable machine elements (14, 36), a receiver device (2) with a pair of transformer coils (6, 7), the system contactlessly transmitting the vibration energy of an electrodynamic or piezoelectric measuring element (5) via a primary coil (6) arranged in said sensor device (1) to a secondary coil (7) of said pair of transformer coils (6, 7), said secondary coil (7) being arranged in said receiver device (2) spaced from said sensor device (1) by an air gap (8), said receiver device further transmitting the measured and transformed vibration or structure-borne noise measuring signal, such thatsaid measuring element (5) is connected directly with said primary coil (6) without any other components and said measuring element (5) is mounted on the movable machine element (14, 36),said receiver device (2) is disposed on a stationary machine element (15), andone of said sensor devices transforming a measured signal to said receiver device (2) every time the movable machine element (14) is positioned with its sensor device (1) such that said primary (6) and said secondary coil (7) are opposite each other at least during the monitoring process, while maintaining said air gap (8).
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Accused Products
Abstract
In a sensor system with a wireless vibration or structure-borne noise sensor device (1), which makes direct use of the vibration energy of its electrodynamic or piezoelectric measuring unit (5) without other components to transmit the vibration energy via a primary coil (6) of a transformer-like pair of coils (6, 7) electrically connected to the measuring unit (5), to the secondary coil (7) of said pair (6, 7) which is located in a receiver (2) independent of the sensor device (1) and separated only by an air gap (8) which conducts the measured and transformed vibration or structure-borne noise measurement signal further, the sensor system is used to monitor the vibration, structure-borne noise and/or sound especially of defined material-removing tools in machine tools or to detect the noise of noise-generating structural units in testing machines or devices. The sensor device (1) is arranged on a traversing and/or rotary machine component (14), e.g., a tool holder, a workpiece holder or a test-specimen support or component holder, in which the receiver device (2) is fitted on a fixed machine component (15). During the actual monitoring process, the primary and secondary coils of the sensor device (1) and the receiver device (2) are opposite each other with the air gap (8) maintained.
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Citations
12 Claims
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1. A sensor system consisting of at least two vibration or structure-borne noise sensor devices (1), a plurality of movable machine elements (14, 36), one of said noise sensor devices (1) mounted on one of said movable machine elements (14, 36) and another of said noise sensor devices (1) mounted on another of said movable machine elements (14, 36), a receiver device (2) with a pair of transformer coils (6, 7), the system contactlessly transmitting the vibration energy of an electrodynamic or piezoelectric measuring element (5) via a primary coil (6) arranged in said sensor device (1) to a secondary coil (7) of said pair of transformer coils (6, 7), said secondary coil (7) being arranged in said receiver device (2) spaced from said sensor device (1) by an air gap (8), said receiver device further transmitting the measured and transformed vibration or structure-borne noise measuring signal, such that
said measuring element (5) is connected directly with said primary coil (6) without any other components and said measuring element (5) is mounted on the movable machine element (14, 36), said receiver device (2) is disposed on a stationary machine element (15), and one of said sensor devices transforming a measured signal to said receiver device (2) every time the movable machine element (14) is positioned with its sensor device (1) such that said primary (6) and said secondary coil (7) are opposite each other at least during the monitoring process, while maintaining said air gap (8).
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2. A sensor system consisting of at least two vibration or structure-borne noise sensor devices (1) at least one movable machine element (14), at least two of said noise sensor devices (1) mounted on said movable machine element (14), a receiver device (2) with a pair of transformer coils (6, 7), the system contactlessly transmitting the vibration energy of an electrodynamic or piezoelectric measuring element (5) via a primary coil (6) arranged in said sensor device (1) to a secondary coil (7) of said pair of transformer coils (6, 7), said secondary coil (7) being arranged in said receiver device (2) spaced from said sensor device (1) by an air gap (8), said receiver device further transmitting the measured and transformed vibration or structure-borne noise measuring signal, such that
said measuring element (5) is connected with said primary coil (6) without any other components and said measuring element (5) is mounted on the movable machine element (14), said receiver device (2) is disposed on a stationary machine element (15), and one of said sensor devices transforming a measured signal to said receiver device (2) every time the movable machine element (14) is positioned with its sensor device (1) such that said primary (6) and said secondary coil (7) are opposite each other at least during the monitoring process, while maintaining said air gap (8).
Specification