WO2003100743A2 - Beruehrungsloses lagemessen von rotierenden teilen - Google Patents
Beruehrungsloses lagemessen von rotierenden teilen Download PDFInfo
- Publication number
- WO2003100743A2 WO2003100743A2 PCT/DE2003/001664 DE0301664W WO03100743A2 WO 2003100743 A2 WO2003100743 A2 WO 2003100743A2 DE 0301664 W DE0301664 W DE 0301664W WO 03100743 A2 WO03100743 A2 WO 03100743A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- phase
- antenna
- antennas
- shaft part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/38—Electric signal transmission systems using dynamo-electric devices
- G08C19/46—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
- F16C35/047—Housings for rolling element bearings for rotary movement with a base plate substantially parallel to the axis of rotation, e.g. horizontally mounted pillow blocks
Definitions
- the invention relates to a method for measuring operating conditions of a rotating part, which may be at least partially stored in a substantially closed metallic housing.
- a rotating part which may be at least partially stored in a substantially closed metallic housing.
- rotating parts are addressed, which are mounted on a roller bearing, such as shafts.
- the invention also relates to a device with which such a measurement is possible, wherein a reflected by the shaft rotating sensor (for example, passive SAW sensor) reflection signal is received by an antenna, which converts it into a received signal for detection or determination (measurement) of the prevailing on the rotatable part operating situation is evaluated.
- a reflected by the shaft rotating sensor for example, passive SAW sensor
- the invention is also concerned with the measurement of rotational states, under which rotational states not the load (mechanical or thermal) is understood, but those rotational states, which are used for example in a drive control, such as the rotational speed, the rotational position (angular position) and / or Sign of the direction of rotation.
- This measurement should also be carried out either alone, or in combination with the previously mentioned thermal and mechanical load measurements in the context of the co-rotating sensor without contact.
- a special focus is the application in rolling bearings and especially in combination with bearing housings, which are substantially completely closed.
- SAW sensors can be applied as a measuring sensor on the rotating part, such as a rolling bearing.
- Rolling bearings themselves are usually installed in substantially closed bearing housings and thus completely or practically completely surrounded by metallic surfaces, resulting in electromagnetic waves to superpositions and as a result to local extinctions and to receiving gaps.
- Receiving gaps are disadvantageous for a continuous or continuous measurement of the load state, which is essentially continuous or oriented at the circumference of the rotating part.
- SAW sensors are in their structure of DE-A 42 17 049 (Siemens), associated publications, such as buff, "SAW sensors", Sensors and Actuators, A, 1992, pages 117 to 121 and in an expanded Application described in a publication from Ultrasonics Symposium, 1994, pages 589 to 592, authors Schmidt, Sczesny, Reindl, Magori, there in particular page 591, right column to Figure 6.
- the structure of the SAW sensors is known to also drive these sensors over short bursts of about 80 nsec in length to avoid unwanted environmental echoes when the reflected signal is reflected after a delay of a few microseconds.
- the SAW sensors have been applied in a similar construction in motor vehicles on a rotating shaft, see.
- the invention is based on the technical problem of being able to measure rotational states without contact on a rotatable part, such as a shaft, and at least reduce receiving gaps despite the metallic, possibly substantially closed bearing housing, preferably completely avoiding them in the evaluated received signal. It should not be the geometry of the housing or the bearing to be optimized, but the measurement itself, which is also to work reliably on the entire rotation angle of 360 °, with cost-effective design and low-cost evaluation.
- the measurements described are made to determine the speed and the position of the relative to the stationary section rotatable shaft part.
- shaft part comes the shaft itself, a section of this shaft or a bearing inner ring in question, the solid is connected to the shaft and rotates with this, without much relative to being rotated relative to her.
- the sensor with the sensor antenna is located on the rotating part, and an antenna of the electronics on the stationary portion side is non-rotatably attached to the bearing housing.
- an antenna of the electronics on the stationary portion side is non-rotatably attached to the bearing housing.
- the spatial change results in transit time differences in the phase between the reflected pulses and a reference oscillator in the interrogation electronics, which is arranged on the stationary side. Since boundary conditions in the bearing housing can be assumed to be stationary, a continuous phase profile results over the angle of rotation of the shaft part. A position measurement is possible. By measuring a time interval between two recurrent phase states, the rotational speed can also be determined as a "rotational state" (claim 34, 35).
- the phase change results from a spatial offset (claim 20), based on the location of the sensor on the rotating shaft part relative to the at least one antenna on the stationary side.
- the evaluation of this phase influence on a signal reflected by the transmitter (claim 16) can be used to evaluate the rotational state of the shaft part (rotational position or speed).
- An evaluation is done via the absolute phase and not the phase difference, wherein the recording takes place on the side of the stationary section, for example by a digital integrator, which records the angular position of the rotating shaft part and entrains (claim 10).
- the additional phase change is due to the local offset of the sensor to the stationary antenna (transmitting or Receiving antenna) and can be used either as a stand-alone or as a further measured variable.
- the recovery of a same phase value, to identify the same rotational position, can be favored if the antennas are formed in a certain way (claim 13, 14 or 15), wherein an asymmetry is applied.
- the capacitive antenna can be coupled with a SAW sensor (claim 6, 7), also here, at the same time, a thermal or mechanical stress on the sensor by measuring changed maturities done (claim 8, 9). If these measured values are available, they can be subtracted from the results of the phase measurement for determining the rotational speed or the rotational position (claim 37).
- sensors find, for example, SAW sensors application that work passively with surface waves (claim 25) and thereby reflected electromagnetic waves reflected time or delay. It is exploited in the reflection of a runtime in the sensors.
- the sensor is irradiated with a high-frequency pulse (claim 31) and this pulse is picked up by an antenna, converted into a surface wave in an interdigital converter and staggered in time by reflector locations on the sensor, so that differences in transit times result in the reflected multiple signals (Claim 26).
- This at least one transit time difference follows from the distances of the reflector locations on the sensor.
- the reflection signals give by their transit time difference a geometric length, changes in this term (the distance of the two reflection signals) result in a mechanical strain of the sensor.
- a mechanical stress of the rotatable part can be determined on which the sensor is firmly attached. While a mechanical load causes an expansion or contraction, a thermal load (claim 29) is a significant cause for a change in the phase velocity of the surface wave on the SAW sensor, which also changes the transit time (between the respective reflector point and the converter as an interdigital transducer) , This results in a load-dependent or temperature-dependent signal size as the output variable of the passive sensor, which can also be regarded as a transmitter, based on the reflected signal. This dependence on the physical influence variable ensures a "passive transmission signal" of the sensor, which leads to a non-contact measuring capability compared to the input signal or a constant phase reference signal.
- the mechanical load on the rotating part changes the geometry of the (passive) sensor, which causes a change in the reflected signals by stretching or contraction (claim 30), which can be measured by the plurality of receiving antennas and a (claim 28) downstream evaluation without contact.
- the at least two, preferably only two received signals are supplied to one of the evaluation circuit upstream signal stage, either summarizes the two signals or switches these signals so that there is always a sufficient received signal for the subsequent evaluation of this signal available.
- Both signals are used to determine the mechanical stress of the rotating part, but not necessarily simultaneously, but preferably with a time delay, according to a mechanical rotational movement of the rotating part (claim 27).
- the respective more favorable received signal can become a working signal which serves as the basis of the load measurement.
- a rotatable part is formed as a shaft and held by a rolling bearing, for example a plummer block (claim 22).
- the fixed arrangement of the sensor is to be understood on the shaft as a rotating part so that a mechanical strain or thermal load of the shaft is transmitted to the sensor, so that its state over the life of the surface waves with reflected electromagnetic waves from the housing side can be measured.
- the electromagnetic pulse can be radiated, for example, from one of the two or more antennas, which can also operate as receiving antennas.
- the irradiation of the pulse on the sensor provides a staggered reflection.
- Several reflectors return a train of signals and are picked up by one (or more) antennas. They emit at least one electrical signal, but prefer several electrical signals that are output from the multiple, spatially-spaced receiving antennas. Of these, the strongest signal is evaluated. Switching between antennas is possible.
- the several staggered incoming signals are also used to separate the effects of mechanical / thermal cause and such by rotation.
- the receive gaps or quiescent waves resulting from standing waves can be eliminated for the measurement.
- the concrete effects of the overlays in a specific situation housing are not known, the measuring device works reliably, regardless of a constructive or destructive interference (increase or decrease of the signal intensity by reflections of the electromagnetic waves).
- the bearing housing unlike in exposed bearings - shading by the shaft is not one, which usually protrudes beyond the camp.
- Figure 1 is an end view of a first exemplary rolling bearing 5 as a pillow block bearing with a rotatable shaft 1 and two stationary antennas A1, A2 for illustrating a first example of the measuring method and a first example of the measurement setup.
- Figure 1a is a sectional view taken along the plane II-II.
- Figure 2 illustrates the measuring principle of a SAW sensor with a transmitted pulse and the associated reflected pulses, the sinusoidal signals are shown by phase.
- FIG. 3 illustrates the phase position over the angular position of the sensor, as depicted as sensor 30 in the previous figures.
- Figure 4 illustrates a measuring system with a capacitive antenna coupling.
- FIG. 4a illustrates a phase characteristic in the capacitive one
- FIGS 1 and 1a illustrate a schematic view of a bearing.
- a bearing housing 10 has an upper, the shape of the bearing following curved portion 10 a and a base portion 10 b with bottom 10 b '.
- Two bearing components can be releasably connected to each other via screw mounts 11, 12 with screw heads 11a, 12a, so that a bearing shell 1b carries a plurality of rolling elements 5a, 5b, 5c ... (for example as balls or cylinders) supporting a rotatable shaft 1.
- the rolling rolling elements 5a, 5b, 5c, ... are arranged between a bearing inner ring 1a and the outer ring 1b as a shell.
- the inner ring 1a is fixedly mounted on the shaft 1, for example by thermal shrinking.
- the outer ring supports the rolling elements.
- the bearing shown can also be referred to as a pillow block bearing associated housing.
- the rolling elements 5a, 5b, ... are arranged at substantially equal intervals orbitally about the shaft 1.
- the sensor 30, which is in the example a SAW sensor for reflecting surface electromagnetic waves, is fixedly mounted on the shaft 1 and connected to the bearing ring 1 a, so that mechanical changes within the shaft or the bearing ring, such as strains, stresses or contractions , be transferred to him and thereby change him mechanically according to the load.
- the arrangement of the sensor 30 can be seen, which is provided on the shaft and extends axially over a partial length of the inner ring 1a, with a substantially perpendicular thereto arranged antenna 31.
- On the same side of the bearing are also provided at an axial distance two receiving antennas A1 and A2 on a support piece 1c, which antennas can also be used as a transmitting antenna.
- the two antennas are introduced in the upper portion 10a, the circumferential distance ⁇ 1 is selected so that one antenna is in a field strength maximum, while the other antenna has a receiving gap with respect to their received signal.
- Both received signals a1, a2 are not in phase, but mutatis mutandis in an antiphase, with a maximum and a minimum are assigned to each other so that both field strength curves over the rotation angle never have a minimum at the same time.
- a working signal a3 is formed.
- This working signal a3 is likewise dependent on the angle of rotation ⁇ and shows a much more uniform course with regard to the signal strength than in each case a single signal a1 or a2. A more uniform reception field strength is thus subjected to the evaluation, so that a more reliable load value ⁇ ( ⁇ ) or ⁇ (t) is obtained.
- One of these two antennas A1 or A2 can simultaneously be a transmitting antenna for emitting a high-frequency pulse which is reflected by the sensor 30.
- the reflected signals are received at different locations by the two antennas spaced apart by ⁇ 1 and form two separate electrical reception signals a1, a2, the due to the spatial spacing of the antennas are essentially not the same in essence.
- the reception quality is no longer dependent solely on an antenna and its arrangement, but both antennas can be positioned so that the two received signals are no longer disturbed as a result of the reflected pulses to determine the strain in sync.
- the additional phase change results from the local offset (spatial offset) of the sensor 30 or its antenna 31 relative to the at least one stationary antenna A1, A2, which can be seen from FIG. 1, FIG. 1a.
- This proportion of the phase change can be evaluated as a further measured variable. It indicates the state of rotation in the sense of the desired measured variable, such as mainly rotational speed or rotational position.
- the direction of rotation can also be referred to as a rotational state.
- the exemplary course according to FIG. 3 shows the phase (the phase state) over the angular position of the SAW sensor or its sensor antenna 31, as can be seen in FIG. 1a.
- the relatively movable transmitting antenna is spatially variable with respect to the at least one antenna on the stationary side, which is evaluated by the interrogation electronics 21. For the case sketched in FIG. 3, two phase jumps of 360 ° take place with a rotation of 360 °. A phase state is thus passed through more than once. This is taken into account in the speed measurement.
- phase shift ⁇ ⁇ of the signal reflected by it with respect to a - not shown in the drawings - reference oscillator in the interrogation electronics 21 determined.
- phase values is composed of a proportion ⁇ 0 ', which is due to the spatially changing arrangement of the two antennas A1 and 31 or A2 and 31, and a fraction ⁇ n 'which is mechanically and thermally influenced as far as this stress is present.
- ⁇ n ⁇ o + ⁇ n ⁇ o '- f ( ⁇ )
- ⁇ cpo (t) ⁇ n (t) - ⁇ n (t T 0) ⁇ o '(t) + ⁇ n' (t) - ⁇ 0 '(t T 0) - ⁇ n! (tT ") ⁇ o '(t) - ⁇ o' (t-To)
- phase change caused by the stress is additionally subtracted. This phase change is determined anyway due to the measurement method for the thermal and mechanical stress.
- n is the number of the reflector.
- the proportion of the phase shift arising from the thermal and / or mechanical stress can be determined from the measured phase values of two reflectors, and thus the proportion of the results resulting from rotation can be determined.
- a speed may be determined by measuring a time between two repeating phase states. Such phase states are shown in the example in FIG. If several identical phase states are distributed around the circumference, this is taken into account in the speed measurement. This helps an absolute phase measurement, which helps take into account phase jumps that take place at the periphery.
- Figure 4a shows ambiguous on the circumference. It results in an arrangement of Figure 4, which operates with a capacity antenna in the context of a warehouse. Shown in Figure 4 is a bearing inner ring 1a, which is fixedly connected to the shaft 1, which shaft is not shown here. The shaft rotates in an indicated direction ⁇ (t) and has a certain position, which is defined with ⁇ (t) at time "t". The derivative of the position gives the speed, or the other way round, the speed of the shaft part gives integrated the position, depending on the order of calculation.
- a ring antenna 40 is applied, which rotates with the shaft.
- another ring antenna which is assigned as a housing antenna 41 to the stationary portion 10 of the bearing.
- This stationary section is shown only schematically, but can be seen from the preceding figures. The speed of the stationary section shall be specified as zero.
- the interrogation electronics 21 ' is symbolically represented, it is coupled to the housing antenna 41 and calculates the functions described.
- the sensor 30 of FIG. 4 corresponds to the co-rotating sensor, which is electrically coupled to the antenna ring associated with the rotating shaft part.
- the two antennas 40, 41 can be described as a bearing antenna or housing antenna.
- the sensor 30 is preferably a SAW sensor, as explained above.
- the capacitive coupling of the two ring-strip antennas 40,41 is designed so that waves standing on them with an integer number P of vibration periods form.
- the ring-strip antennas have only a small distance to the transmission of the signals, in the range up to 1/10 of the wavelength used.
- the frequency used here in the example is about 2.45 GHz (wavelength of 122.4 mm).
- a distance between the antennas should therefore be less than 12mm in the example. In a further preferred example, they are about 2mm.
- phase measured values of the individual reflectors of the SAW sensor 30 shown in FIG. 2, which is provided in FIG. 4, are given an additional angular position-dependent phase offset.
- a rotational speed or a direction of rotation is determined, which refers to the shaft part 1a.
- the absolute phase for one of the reflectors of the SAW chip is recorded on the stationary side and carried along. For example, this can be done by a digital integrator.
- the factor 2P can be used to convert the integrated absolute-phase value, referred to as the raw-axis value, into the position of the inner ring, which corresponds to the position of the actual rotary position. If there is an ambiguity in the circumference, a calibration is useful to resolve the ambiguity. This calibration can be automated via targeted use of a winkeiphthalen transmission characteristic. For this purpose, the fact can be used that at a certain position of the antennas 40,41 to each other a collapse or at least a significant deviation of the transmitted signal amplitude occurs.
- the deviation in the transmission characteristic can also be predetermined or influenced by a deliberate, slight mismatch of one or both of the two antennas 40, 41, e.g. a notch in one of the antennas.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10392672T DE10392672D2 (de) | 2002-05-25 | 2003-05-23 | Beruehrungsloses Lagemessen von rotierenden Teilen |
| AU2003245838A AU2003245838A1 (en) | 2002-05-25 | 2003-05-23 | Contactless position measurement of rotating elements |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10223378 | 2002-05-25 | ||
| DE10223378.0 | 2002-05-25 | ||
| DE10304937 | 2003-02-06 | ||
| DE10304937.1 | 2003-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003100743A2 true WO2003100743A2 (de) | 2003-12-04 |
| WO2003100743A3 WO2003100743A3 (de) | 2004-06-03 |
Family
ID=29585318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2003/001664 Ceased WO2003100743A2 (de) | 2002-05-25 | 2003-05-23 | Beruehrungsloses lagemessen von rotierenden teilen |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2003245838A1 (de) |
| DE (1) | DE10392672D2 (de) |
| WO (1) | WO2003100743A2 (de) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10348862A1 (de) * | 2003-10-21 | 2005-06-02 | Meyl, Konstantin, Dr.-Ing. | Vorrichtung zur Datenübertragung |
| DE102008064048A1 (de) * | 2008-12-19 | 2010-06-24 | Continental Teves Ag & Co. Ohg | Drehmomentsensoranordnung zur drahtlosen Daten- und Energieübertragung |
| WO2015107142A1 (de) * | 2014-01-16 | 2015-07-23 | Voith Patent Gmbh | System zur ermittlung von betriebsparametern eines getriebeelementes |
| GB2536711A (en) * | 2015-03-27 | 2016-09-28 | Skf Ab | Capacitance measurement in a bearing housing |
| WO2019011883A1 (de) | 2017-07-11 | 2019-01-17 | Voith Patent Gmbh | Temperaturbestimmung an einem überlagerungsgetriebe |
| EP4182651A1 (de) * | 2020-09-08 | 2023-05-24 | Sensideon GmbH | Vorrichtung zum auslesen eines sensors |
| DE102022115502B3 (de) | 2022-06-22 | 2023-11-09 | Schaeffler Technologies AG & Co. KG | Vorrichtung zur Erfassung von Messwerten in einer Maschine und kontaktlosen Signalübertragung, sowie Maschinenbaugruppe mit dieser Vorrichtung |
| DE102022115505A1 (de) | 2022-06-22 | 2023-12-28 | Schaeffler Technologies AG & Co. KG | Baugruppe eines Elektromotors mit Sensor sowie Fahrzeug |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9004822D0 (en) * | 1990-03-03 | 1990-04-25 | Lonsdale Anthony | Method and apparatus for measuring torque |
| US5736938A (en) * | 1996-05-06 | 1998-04-07 | Ruthroff; Clyde L. | Apparatus, employing capacitor coupling for measuremet of torque on a rotating shaft |
| GB9907130D0 (en) * | 1999-03-26 | 1999-05-19 | Fet Applic Limited | Torque and speed sensor |
| DE10049019A1 (de) * | 2000-10-04 | 2002-05-02 | Siemens Ag | Verfahren und Vorrichtung zur drahtlosen Messung wenigstens eines aus einer Drehbewegung eines Objekts, insbesondere Rotors resultierenden Parameters |
-
2003
- 2003-05-23 AU AU2003245838A patent/AU2003245838A1/en not_active Abandoned
- 2003-05-23 WO PCT/DE2003/001664 patent/WO2003100743A2/de not_active Ceased
- 2003-05-23 DE DE10392672T patent/DE10392672D2/de not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10348862A1 (de) * | 2003-10-21 | 2005-06-02 | Meyl, Konstantin, Dr.-Ing. | Vorrichtung zur Datenübertragung |
| DE10348862B4 (de) * | 2003-10-21 | 2009-03-12 | Meyl, Konstantin, Dr.-Ing. | Vorrichtung zur Datenübertragung |
| DE102008064048A1 (de) * | 2008-12-19 | 2010-06-24 | Continental Teves Ag & Co. Ohg | Drehmomentsensoranordnung zur drahtlosen Daten- und Energieübertragung |
| WO2015107142A1 (de) * | 2014-01-16 | 2015-07-23 | Voith Patent Gmbh | System zur ermittlung von betriebsparametern eines getriebeelementes |
| WO2015107144A1 (de) * | 2014-01-16 | 2015-07-23 | Voith Patent Gmbh | SYSTEM ZUR ERMITTLUNG VON MESSGRÖßEN AN EINEM ROTIERENDEN BAUTEIL |
| GB2536711A (en) * | 2015-03-27 | 2016-09-28 | Skf Ab | Capacitance measurement in a bearing housing |
| US9556913B2 (en) | 2015-03-27 | 2017-01-31 | Aktiebolaget Skf | Capacitance measurement in a bearing housing |
| GB2536711B (en) * | 2015-03-27 | 2018-06-27 | Skf Ab | Capacitance measurement in a bearing housing |
| WO2019011883A1 (de) | 2017-07-11 | 2019-01-17 | Voith Patent Gmbh | Temperaturbestimmung an einem überlagerungsgetriebe |
| DE102017115479A1 (de) | 2017-07-11 | 2019-01-17 | Voith Patent Gmbh | Temperaturbestimmung an einem Überlagerungsgetriebe |
| EP4182651A1 (de) * | 2020-09-08 | 2023-05-24 | Sensideon GmbH | Vorrichtung zum auslesen eines sensors |
| DE102022115502B3 (de) | 2022-06-22 | 2023-11-09 | Schaeffler Technologies AG & Co. KG | Vorrichtung zur Erfassung von Messwerten in einer Maschine und kontaktlosen Signalübertragung, sowie Maschinenbaugruppe mit dieser Vorrichtung |
| WO2023246968A1 (de) | 2022-06-22 | 2023-12-28 | Schaeffler Technologies AG & Co. KG | Vorrichtung zur erfassung von messwerten in einer maschine und kontaktlosen signalübertragung, sowie maschinenbaugruppe mit dieser vorrichtung |
| DE102022115505A1 (de) | 2022-06-22 | 2023-12-28 | Schaeffler Technologies AG & Co. KG | Baugruppe eines Elektromotors mit Sensor sowie Fahrzeug |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003245838A1 (en) | 2003-12-12 |
| WO2003100743A3 (de) | 2004-06-03 |
| AU2003245838A8 (en) | 2003-12-12 |
| DE10392672D2 (de) | 2005-02-24 |
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