DE10325667A1 - Roller bearing rotating component sensor system uses SAW and BAW sensor with responses transmitted through shared antenna as frequency separated narrow band signals - Google Patents
Roller bearing rotating component sensor system uses SAW and BAW sensor with responses transmitted through shared antenna as frequency separated narrow band signals Download PDFInfo
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- DE10325667A1 DE10325667A1 DE10325667A DE10325667A DE10325667A1 DE 10325667 A1 DE10325667 A1 DE 10325667A1 DE 10325667 A DE10325667 A DE 10325667A DE 10325667 A DE10325667 A DE 10325667A DE 10325667 A1 DE10325667 A1 DE 10325667A1
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- 238000010897 surface acoustic wave method Methods 0.000 description 17
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- 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
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- 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
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2462—Probes with waveguides, e.g. SAW devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2468—Probes with delay lines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
- G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0423—Surface waves, e.g. Rayleigh waves, Love waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/269—Various geometry objects
- G01N2291/2696—Wheels, Gears, Bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/269—Various geometry objects
- G01N2291/2698—Other discrete objects, e.g. bricks
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- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
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- Acoustics & Sound (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Anwendungsgebiet der Erfindungfield of use the invention
Die Erfindung betrifft ein Messsystem mit wenigstens zwei SAW- oder BAW-Sensoren gemäß dem Oberbegriff des Patentanspruchs 1 sowie ein Verfahren zum Betreiben dieses Messsystems gemäß dem Oberbegriff des Verfahrensanspruches.The The invention relates to a measuring system with at least two SAW or BAW sensors according to the preamble of patent claim 1 and a method for operating this measuring system according to the generic term the method claim.
Hintergrund der Erfindungbackground the invention
Aus
der
Derartige SAW- bzw. BAW-Sensoren verfügen bekanntlich über Bereiche mit piezoelektrischen Eigenschaften, mit denen akustische Oberflächen- bzw. Volumenwellen erzeugbar sind, die sich in dem Sensorsubstrat oder an dessen Oberfläche lateral von der Anregungsquelle fortbewegen. Über der Längserstreckung der SAW- bzw. BAW-Sensoren sind zudem Reflektoren ausgebildet, an denen die genannten Wellen reflektiert und zum piezoelektrischen Bereich zurückgelenkt werden. In diesem Betriebszustand arbeitet ein solcher piezoelektrischer Bereich als piezoelektrischer Messfühler, der die reflektierten Wellen in ein elektrisches Signal umwandelt.such SAW or BAW sensors known about Areas with piezoelectric properties that are acoustic Surface or Bulk waves are generated, which are in the sensor substrate or on its surface move laterally from the excitation source. Over the longitudinal extent of the SAW or BAW sensors are also formed reflectors on which said Waves reflected and directed back to the piezoelectric region become. In this operating state, such a piezoelectric region operates as a piezoelectric sensor, which converts the reflected waves into an electrical signal.
Sobald ein mit einem SAW- bzw. BAW-Sensor ausgestattetes Lagerbauteil Kräften und/oder Temperaturveränderungen ausgesetzt ist, entstehen in diesem mechanische Spannungen, die sich auch auf den SAW- bzw. BAW-Sensor auswirken. Dieser erfährt dann ebenfalls eine Veränderung seiner Abmessungen und/oder physikalischen Eigenschaften, welche sich letztlich in Laufzeitunterschieden der an den Sensorreflektoren reflektierten Wellen bemerkbar machen. Diese Laufzeitunterschiede sind dabei im Idealfall proportional abhängig von den auf das Lager wirkenden physikalischen Größen.As soon as an equipped with a SAW or BAW sensor bearing component forces and / or temperature changes is exposed, arise in this mechanical stresses, the also on the SAW or BAW sensor impact. This learns then also a change its dimensions and / or physical properties which ultimately in runtime differences at the sensor reflectors make reflected waves noticeable. These transit time differences Ideally, they are proportionally dependent on those on the bearing acting physical quantities.
Mit einer solchen bekannten Mess- und Auswertungseinrichtung lassen sich neben der Lagertemperatur, der Drehzahl und der Drehrichtung des Lagers auch die auf das Lager wirkenden Kräfte und Momente sowie translatorische und rotatorische Schwingungen bzw. Schwingungsbeschleunigungen von Lagerbauteilen ermitteln.With let such a known measuring and evaluation device next to the bearing temperature, the speed and the direction of rotation the bearing and the forces acting on the bearing forces and moments as well as translational and rotational oscillations or oscillations of Determine bearing components.
Sofern zur Erfassung bestimmter Betriebseigenschaften des rotierenden Bauteils oder zur Verifikation eines Sensorsignals ein zweites Sensorsignal benötigt oder gewünscht wird, sind mehrere SAW- oder BAW-Sensoren an diesem drehbaren Bauteil anzubringen. Bei einem derartigen Messaufbau ergibt sich das technische Problem, dass einerseits aus Kostengründen sowie zur besse ren Vergleichbarkeit der Sensorsignale und zur Reduzierung des Aufwandes für die Signalauswertung hinsichtlich ihres Aufbaus weitgehend identische Sensoren verwendet werden sollen, und dass andererseits die zum gleichen oder annähernd gleichen Zeitpunkt ermittelten physikalisch-technischen Größen möglichst einfach aus dem rotierenden System zu dem statischen System übertragen werden sollen. In bekannten gattungsgemäßen Messsystemen wird beispielsweise hierzu pro SAW- bzw. BAW-Sensor jeweils ein gesondertes Messdatenübermittlungssystem mit Sendeantenne, Empfangsantenne und Abfragelektronik verwendet, so dass dieser Aufbau sehr komplex und vor allem kostenaufwendig ist. Teilweise werden auch Sensoren mit unterschiedlicher Reflektoranordnung benutzt, die sich dann durch das Muster ihres Antwortsignals (Sensorantwort) identifizieren lassen.Provided for detecting certain operating characteristics of the rotating component or for verification of a sensor signal requires a second sensor signal or required If several SAW or BAW sensors are to be attached to this rotatable component. In such a measurement setup, the technical problem arises, that on the one hand for cost reasons and for better comparability of the sensor signals and for reduction the effort for the signal evaluation largely identical in terms of their structure Sensors are to be used, and that on the other hand, the to same or approximate same time determined physical-technical sizes as possible simply transferred from the rotating system to the static system should be. In known generic measuring systems, for example, this For each SAW or BAW sensor, a separate measurement data transmission system used with transmitting antenna, receiving antenna and interrogation electronics, making this setup very complex and, above all, costly is. Partially also sensors with different reflector arrangement become which then uses the pattern of their response signal (sensor response) be identified.
Aufgabe der ErfindungTask of invention
Vor diesem Hintergrund besteht die Aufgabe der Erfindung darin, ein gegenüber der genannten Lösung des Standes der Technik vereinfachtes Messsystem mit wenigstens zwei SAW- oder BAW-Sensoren vorzuschlagen.In front In this background, the object of the invention is a across from the solution mentioned The prior art simplified measuring system with at least to propose two SAW or BAW sensors.
Zusammenfassung der ErfindungSummary the invention
Die Lösung dieser Aufgabe ergibt sich hinsichtlich des Messsystems aus den Merkmalen des Patentanspruchs 1, während vorteilhafte Ausgestaltungen und Weiterbildungen dieses Messsystems den Unteransprüchen entnehmbar sind. Ein erfindungsgemäßes Verfahren zum Betreiben eines solchen Messsystems ist in dem unabhängigen Verfahrensanspruch sowie den dazu abhängigen Verfahrensansprüchen definiert.The solution This task arises with regard to the measuring system from the Features of claim 1, while advantageous embodiments and further developments of this measuring system the dependent claims are. A method according to the invention to operate such a measuring system is in the independent method claim and the dependent method claims Are defined.
Demnach geht die Erfindung von einem Messsystem mit wenigstens zwei SAW- oder BAW-Sensoren aus, bei dem diese Sensoren an einem Bauteil angeordnet sind, das drehbar in einem feststehenden Bauteil aufgenommen ist.Therefore does the invention of a measuring system with at least two SAW or BAW sensors, in which these sensors are arranged on a component are rotatably received in a fixed component.
Zudem werden die Sensoren durch einen von einer Auswerteeinheit ausgesendeten elektromagnetischen Abfragepuls, den diese im Muster ihrer Reflektoren zurücksenden, abgefragt. Der Frequenzgang der Sensoren ist sehr schmalbandig. Die Mittenfrequenzen der Sensoren unterscheiden sich voneinander und haben dabei einen derart großen Frequenzabstand zueinander, dass sich die Antwortsignale der Sensoren (Sensorantworten) hinsichtlich der Signalübertragung und/oder Signalauswertung nicht gegenseitig stören. Darüber hinaus ist mit einer Ausgestaltung der Erfindung vorgesehen, dass die Sensoren über Leitungen an eine gemeinsame Sensorantenne angeschlossen sind, und dass die Sendesignale der Sensorantenne von einer gemeinsamen Empfangsantenne zu empfangen sind.In addition, the sensors are emitted by an electromagnetic interrogation pulse emitted by an evaluation unit, this in the pattern ih Return the reflectors, inquired. The frequency response of the sensors is very narrowband. The center frequencies of the sensors differ from each other and have such a large frequency spacing from one another that the response signals of the sensors (sensor responses) do not interfere with one another with regard to signal transmission and / or signal evaluation. Moreover, it is provided with an embodiment of the invention that the sensors are connected via lines to a common sensor antenna, and that the transmission signals of the sensor antenna are to be received by a common receiving antenna.
Durch diesen Aufbau ist es in Abgrenzung zu den Lösungen des Standes der Technik kostensparend möglich, mit nur einer Sendeantenne und nur einer Empfangsantenne die Sensorsignale der zumindest hinsichtlich ihrer Reflektoren identisch aufgebauten SAW- oder BAW-Sensoren aus dem rotierenden in das stationäre System zu übertragen sowie anschließend vorteilhaft auszuwerten.By this structure is in contrast to the solutions of the prior art cost-saving possible, with only one transmitting antenna and only one receiving antenna, the sensor signals the at least in terms of their reflectors constructed identically SAW or BAW sensors from the rotating to the stationary system transferred to and then advantageous to evaluate.
Hinsichtlich einer Abfrageelektronik, die einer Empfangsantenne der Empfangseinrichtung signaltechnisch nachgeordnet ist, ist vorgesehen, dass durch die Abfrageelektronik in frei adrressierbarer Reihenfolge die verschiedenen Mittenfrequenzen abfragbar sind. So ist beispielsweise vorgesehen, die sich von Sensor zu Sensor in den Mittenfrequenzen unterscheidenden Sensorantworten wiederholt in abwechselnder Reihenfolge abzufragen. Außerdem weist die Abfrageelektronik einen Frequenzumschalter oder einen PLL (Phase Locked Loop) auf, der/die Sendefrequenz des an die Sensoren geschickten Abfragepulses ändern kann. Ein PLL ist ein Oszillator, der der Frequenz eines Referenzoszillators stabil und phasenstarr mit einem einstellbaren Frequenzmultiplikator folgt. Durch Änderung des Multiplikators kann leicht die Ausgangsfrequenz des PLL geändert werden. Aufgrund der unterschiedlichen Mittenfre quenzen der Sensoren reflektiert nur jeweils ein Sensor den Abfrageimpuls nennenswert, alle anderen Sensoren bedämpfen ihn stark bis zur Auslöschung. Somit sind die Antwortsignale der einzelnen Sensoren voneinander zu unterscheiden und können einzeln einer Signalauswertungseinrichtung zugeleitet werden.Regarding an interrogation electronics, the receiving antenna of a receiving device downstream of signal technology, it is provided that by Interrogation electronics in freely addressable order the various Center frequencies are queriable. For example, it is intended which differs from sensor to sensor in the center frequencies To query sensor responses repeatedly in alternating order. In addition, points the interrogation electronics a frequency switch or a PLL (phase Locked Loop) on, the / send frequency of the sent to the sensors Change polling pulse can. A PLL is an oscillator that is the frequency of a reference oscillator stable and phase-locked with an adjustable frequency multiplier follows. By change the multiplier can easily change the output frequency of the PLL. Due to the different Mittenfre frequencies of the sensors reflected only one sensor at a time noteworthy the interrogation pulse, all other sensors attenuate strong him to extinction. Consequently the response signals of the individual sensors must be distinguished from one another and can individually fed to a signal evaluation device.
Untersuchungen zeigten, dass insbesondere Sensoren zu bevorzugen sind, deren Sensorsignalkennlinien Mittenfrequenzen aufweisen, die im Bereich von 2450 MHz liegen. Um eine saubere Sensorsignaltrennung erreichen zu können, wird eine Frequenzbandbreite von 200 MHz bis 20 MHz, vorzugsweise jedoch von 100 MHz bis 30 MHz sowie äußerst bevorzugt 50 MHz genutzt. Es versteht sich, dass auch Sensoren eingesetzt werden können, deren Mittenfrequenzen von dem genannten Bereich von 2450 MHz abweichen. Wichtig ist insbesondere, dass die Frequenzbandbreite des Sensorsignals um die Mittenfrequenz so schmal ist, dass sich die Sensorsignale/antworten der in dem Messsystem eingesetzten Sensoren signaltechnisch nicht gegenseitig stören.investigations showed that especially sensors are to be preferred, their sensor signal characteristics Center frequencies are in the range of 2450 MHz. In order to achieve a clean sensor signal separation, is a frequency bandwidth of 200 MHz to 20 MHz, but preferably from 100 MHz to 30 MHz, and highly preferred 50 MHz used. It is understood that even sensors are used can be their center frequencies deviate from the stated range of 2450 MHz. It is particularly important that the frequency bandwidth of the sensor signal around the center frequency is so narrow that the sensor signals / answer the sensors used in the measuring system not signaling disturb each other.
Zum Betreiben eines Messsystems mit den vorgenannten Merkmalen ist daher verfahrensgemäß vorgesehen, dass die wenigstens zwei Sensoren schmalbandige Signale reflektieren, deren Mittenfrequenzen einen derart großen Frequenzabstand zueinander haben, dass sich diese hinsichtlich der Signalübertragung und/oder Signalauswertung gegenseitig nicht stören, und dass die Sensorsignale einer gemeinsamen Sendeantenne zugeleitet, von einer gemeinsamen Empfangsantenne empfangen sowie durch ihre Frequenz unterscheidbar einer Abfrageeinrichtung und/oder einer Auswertungseinrichtung zur Auswertung zugeführt werden. Es handelt sich demzufolge um ein kombiniertes Frequenz-Zeit-Multiplexverfahren, das heißt, die einzelnen Sensoren werden zeitlich nacheinander durch eine Änderung der Frequenz von ein und der selben Abfrageeinrichtung abgefragt.To the Operating a measuring system with the aforementioned features is therefore provided according to the method, that the at least two sensors reflect narrowband signals, their center frequencies such a large frequency distance to each other have that in terms of signal transmission and / or signal evaluation do not disturb each other, and that the sensor signals are fed to a common transmission antenna, received by a common receiving antenna and by their Frequency distinguishable to an interrogator and / or a Evaluation device are supplied for evaluation. It is about consequently a combined frequency-time multiplexing method, this means, the individual sensors are chronologically successive by a change the frequency of one and the same interrogator queried.
Von Bedeutung ist dabei, dass die Sensorantworten von der gemeinsamen Sendeantenne nacheinander und auf verschiedenen Frequenzen gesendet werden, um nach deren Empfang durch die gemeinsame Empfangsantenne in einer Abfrageelektronik den einzelnen Sensoren zugeordnet zu werden.From Significance is that the sensor responses from the common Transmitter antenna sent in succession and on different frequencies after receiving them through the common receiving antenna assigned to the individual sensors in a query electronics become.
Außerdem ist es verfahrensgemäß vorgesehen, dass die von der Abfrageelektronik signaltechnisch durch unterschiedliche Abfragefrequenzen voneinander getrennten Sensorantworten seriell, d.h. nacheinander bzw. abwechselnd einer Auswertungseinrichtung zur Signalauswertung zugeleitet werden.Besides that is it is provided according to the method, that of the interrogation electronics signal technically by different Interrogation frequencies of separate sensor responses serially, i.e. successively or alternately an evaluation device be forwarded for signal evaluation.
Beschreibung eines Ausführungsbeispiels und der Zeichnungendescription an embodiment and the drawings
Die
Erfindung lässt
sich mit Hilfe eines konkreten Ausführungsbeispiels erläutern, zu
dem der Beschreibung eine Zeichnung gemäß
Links
neben den beiden Sensoren
Diese
Sensorsignale
Von
der Abfrageelektronik
Es
ist möglich,
dass die Abfrageeinrichtung
Durch den Aufbau und die Betriebsweise des erfindungsgemäßen Messsystems ist es nun möglich, zwei oder mehrere identisch aufgebaute SAW- oder BAW-Sensoren zu nutzen, die sich lediglich hinsichtlich ihrer Mittenfrequenz unterscheiden, dabei aber ein sehr schmalbandiges Sensorantwortsignal reflektieren. Dies reduziert die Herstellkosten auf der Sensorseite des Messsystems und auch die Kosten für die Entwicklung der Abfrageelektronik und der Auswertungseinrichtung.By the structure and operation of the measuring system according to the invention is it possible now two or more identical SAW or BAW sensors use that only differ in terms of their center frequency, but reflect a very narrow-band sensor response signal. This reduces the manufacturing costs on the sensor side of the measuring system and also the costs for the development of the interrogation electronics and the evaluation device.
- 11
- Erster SAW- oder BAW-Sensorfirst SAW or BAW sensor
- 22
- Zweiter SAW- oder BAW-Sensorsecond SAW or BAW sensor
- 33
- Leitungmanagement
- 44
- Leitungmanagement
- 55
- Sendeantennetransmitting antenna
- 66
- Erstes Sensorsignalfirst sensor signal
- 77
- Zweites Sensorsignalsecond sensor signal
- 88th
- Frequenzbreite des ersten Sensorsignalsfrequency range of the first sensor signal
- 99
- Frequenzbreite des zweiten Sensorsignalsfrequency range of the second sensor signal
- 1010
- Empfangsantennereceiving antenna
- 1111
- Leitungmanagement
- 1212
- Abfrageeinrichtunginterrogator
- 1313
- Leitungmanagement
- 1414
- Umschalteinrichtungswitchover
- 1515
- Leitungmanagement
- 1616
- Leitungmanagement
- 1717
- Erstes Empfangssignalfirst receive signal
- 1818
- Zweites Empfangssignalsecond receive signal
- 1919
- Zweite MittenfrequenzSecond center frequency
- 2020
- Erste MittenfrequenzFirst center frequency
- 2121
- Auswertungseinrichtungevaluation device
- 2222
- MittenfrequenzabstandCenter frequency spacing
- SSASSA
- SendesignalamplitudeTransmission signal amplitude
- LL
- Empfangsleistungreceive power
- FF
- Signalfrequenzsignal frequency
Claims (11)
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DE10325667A DE10325667A1 (en) | 2003-06-06 | 2003-06-06 | Roller bearing rotating component sensor system uses SAW and BAW sensor with responses transmitted through shared antenna as frequency separated narrow band signals |
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DE10325667A DE10325667A1 (en) | 2003-06-06 | 2003-06-06 | Roller bearing rotating component sensor system uses SAW and BAW sensor with responses transmitted through shared antenna as frequency separated narrow band signals |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006008176A1 (en) * | 2006-02-22 | 2007-08-30 | Ab Skf | Bearing arrangement for mounting impression roll in printing press, has sensor and exciter element, which are arranged on inner ring or on component which is connected to inner ring, where detecting unit detects and forwards signal |
DE102006035703A1 (en) * | 2006-08-01 | 2008-02-07 | Schaeffler Kg | Device for monitoring at least one operating variable of a wheelset bearing |
DE102008036224A1 (en) | 2008-08-02 | 2010-02-04 | Schaeffler Kg | Bearing component i.e. outer ring, of roller bearing, has marking comprising coding and queryable surface acoustic wave element, where surface acoustic wave element comprises surface acoustic wave carrier |
FR2996599A1 (en) * | 2012-10-10 | 2014-04-11 | Controle Mesure Regulation | SYSTEM FOR MONITORING THE PHYSICAL AND / OR ANALOGIC PARAMETERS OF THE PARTS OF AN ENGINE |
WO2014114518A1 (en) * | 2013-01-22 | 2014-07-31 | Siemens Aktiengesellschaft | Device, system, and method with a surface wave chip |
CN104709311A (en) * | 2008-03-05 | 2015-06-17 | Skf公司 | Device |
EP1977108B1 (en) | 2006-01-25 | 2018-06-13 | Vestas Wind Systems A/S | An epicyclic gearbox and a wind turbine comprising at least one epicyclic gearbox |
GB2601147A (en) * | 2020-11-19 | 2022-05-25 | Tribosonics Ltd | An ultrasonic sensor arrangement |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1977108B1 (en) | 2006-01-25 | 2018-06-13 | Vestas Wind Systems A/S | An epicyclic gearbox and a wind turbine comprising at least one epicyclic gearbox |
DE102006008176A1 (en) * | 2006-02-22 | 2007-08-30 | Ab Skf | Bearing arrangement for mounting impression roll in printing press, has sensor and exciter element, which are arranged on inner ring or on component which is connected to inner ring, where detecting unit detects and forwards signal |
DE102006035703A1 (en) * | 2006-08-01 | 2008-02-07 | Schaeffler Kg | Device for monitoring at least one operating variable of a wheelset bearing |
CN104709311A (en) * | 2008-03-05 | 2015-06-17 | Skf公司 | Device |
DE102008036224A1 (en) | 2008-08-02 | 2010-02-04 | Schaeffler Kg | Bearing component i.e. outer ring, of roller bearing, has marking comprising coding and queryable surface acoustic wave element, where surface acoustic wave element comprises surface acoustic wave carrier |
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WO2014114518A1 (en) * | 2013-01-22 | 2014-07-31 | Siemens Aktiengesellschaft | Device, system, and method with a surface wave chip |
GB2601147A (en) * | 2020-11-19 | 2022-05-25 | Tribosonics Ltd | An ultrasonic sensor arrangement |
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GB2615922A (en) * | 2020-11-19 | 2023-08-23 | Tribosonics Ltd | An ultrasonic sensor arrangement |
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