Contactless measurement of the stress of rotating parts
First Claim
1. A method for measurement of mechanical loads or stresses of a rotating part in an essentially closed metal housing for a bearing;
- wherein the rotating part carries a sensor, which reflects electromagnetic waves and changes its property in measurable fashion based on the strain or load of the rotating part;
wherein two antennas, receiving reflected signals of the sensor, are arranged such that they cannot turn relative to the sensor and are spaced in the housing, and these antennas put out two electrical reception signals, which are taken to an electronic evaluation system, in order to utilize both reception signals for determining the load or strain of the rotating part.
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Accused Products
Abstract
The invention relates to a method for measuring mechanical stresses of a rotating part (1) in an essentially closed metal housing. The rotating part comprises a sensor (2) which reflects electromagnetic waves and which can be measurably deformed as a result of a mechanical stress exerted on said rotating part (1). The two antennas (A1, A2) receiving the reflected signals of the sensor (2) are arranged in the bearing housing (10) in such a way that they cannot rotate in relation to the sensor and are distanced (α). Said antennas emit receiving signals (a1,a2) which are sent to an electronic evaluation system (20,21) which measures the mechanical stresses of the rotating part (1) on the basis of both receiving signals (a1,a2).
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Citations
21 Claims
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1. A method for measurement of mechanical loads or stresses of a rotating part in an essentially closed metal housing for a bearing;
- wherein the rotating part carries a sensor, which reflects electromagnetic waves and changes its property in measurable fashion based on the strain or load of the rotating part;
wherein two antennas, receiving reflected signals of the sensor, are arranged such that they cannot turn relative to the sensor and are spaced in the housing, and these antennas put out two electrical reception signals, which are taken to an electronic evaluation system, in order to utilize both reception signals for determining the load or strain of the rotating part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 17, 18, 19)
- wherein the rotating part carries a sensor, which reflects electromagnetic waves and changes its property in measurable fashion based on the strain or load of the rotating part;
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12. A device for determination of loads on a rotating part in an essentially closed metal bearing housing, wherein the rotating part carries a transmitter, which reflects electromagnetic waves and which can be deformed in measurable fashion by virtue of a load on the rotating part;
- and wherein two antennas—
receiving reflected signals of the transmitter—
are arranged such that they cannot turn relative to the transmitter and are at a spacing (α
) in the bearing housing, in order to put out at least two reception signals to an electronic evaluation system, in which both reception signals can be evaluated—
jointly or alternatively—
in order to determine the load on the part. - View Dependent Claims (13, 15, 16, 20, 21)
- and wherein two antennas—
Specification