DE4312354C1 - Wear measuring sensor, e.g. for vehicle brake pad - uses resistor chain with bridging conductor loops at staggered distances from component surface - Google Patents
Wear measuring sensor, e.g. for vehicle brake pad - uses resistor chain with bridging conductor loops at staggered distances from component surfaceInfo
- Publication number
- DE4312354C1 DE4312354C1 DE4312354A DE4312354A DE4312354C1 DE 4312354 C1 DE4312354 C1 DE 4312354C1 DE 4312354 A DE4312354 A DE 4312354A DE 4312354 A DE4312354 A DE 4312354A DE 4312354 C1 DE4312354 C1 DE 4312354C1
- Authority
- DE
- Germany
- Prior art keywords
- wear
- sensor
- conductors
- machine part
- pin
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/026—Apparatus for indicating wear using electrical detection or indication means indicating different degrees of lining wear
- F16D66/027—Sensors therefor
-
- 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
-
- 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
Abstract
Description
Die Erfindung betrifft einen Sensor gemäß dem Oberbe griff des Anspruchs 1 und einen Sensor gemäß dem Ober begriff des Anspruchs 2. Solche Sensoren sind aus der DE 38 18 877 A1 bekannt.The invention relates to a sensor according to the Oberbe handle of claim 1 and a sensor according to the Ober Concept of claim 2. Such sensors are from DE 38 18 877 A1 known.
Der aus der DE 38 18 877 A1 bekannte Sensor zum Messen des Verschleißes der Oberfläche eines Maschinenteils dient zur Überwachung eines durch Abrieb verschleißbaren Belags, insbe sondere des Bremsbelags eines Kraftfahrzeugs. Ein Chip bei einer Verschließmessung ist aus der DE 30 07 887 A1 bekannt, die eine Vorrichtung zum Messen des Verschleißes von Ver schleißblöcken, wie z. B. Bremsbelägen, beschreibt. Die Über wachung von Lagerverschleiß mit Hilfe von Widerstandsänderun gen ist aus der DE 34 16 343 A1 bekannt.The sensor known from DE 38 18 877 A1 for measuring the Wear of the surface of a machine part is used Monitoring of a wearable covering, esp special of the brake pad of a motor vehicle. A chip at a wear measurement is known from DE 30 07 887 A1, the a device for measuring the wear of Ver wear blocks, such as B. brake pads. The About monitoring of bearing wear with the help of resistance changes gene is known from DE 34 16 343 A1.
Es besteht Bedarf an einem Sensor, der den Verschleiß der Oberfläche eines Maschinenteils mißt. Ein Anwen dungsbeispiel ist der Verschleiß der Zylinderbüchsen von Motoren, insbesondere Großmotoren, bei denen durch den Kolbenlauf und Feststoffpartikel im Brennstoff die Lauffläche langsam ausgeschliffen wird. Ein anderes Anwendungsbeispiel sind einem Verschleiß ausgesetzte Gleitlager. There is a need for a sensor that shows the wear the surface of a machine part. An application Example of wear is the wear of the cylinder liners from Engines, especially large engines, where the Piston run and solid particles in the fuel Tread is ground slowly. Another Application examples are subject to wear Bearings.
Derartige Sensoren müssen die absoluten Maßänderungen zuver lässig feststellen und bei hoher Standfestigkeit mit hoher Auflösung auch bei schwierigen Bedingungen, insbesondere ho hen Temperaturen und hohen Drücken, arbeiten.Such sensors must verver the absolute dimensional changes ascertain casually and with high stability with high Resolution even in difficult conditions, especially ho high temperatures and high pressures.
Ausgehend von einem Sensor gemäß dem Oberbegriff des An spruchs 1 bzw. 2 liegt der Erfindung die Aufgabe zugrunde, diesen Sensor derart weiterzubilden, daß er die oben genann ten Bedingungen erfüllt.Starting from a sensor according to the preamble of the An Say 1 and 2, the invention is based on the object develop this sensor in such a way that he called the above conditions met.
Erfindungsgemäß wird diese Aufgabe durch die Ausbildung mit den Merkmalen des Anspruchs 1 bzw. des Anspruchs 2 gelöst. Die Unteransprüche geben bevorzugte Ausführungsbeispiele der Erfindung an.According to the invention, this task is achieved through training with solved the features of claim 1 and claim 2. The subclaims give preferred embodiments of the Invention.
Die Erfindung wird im folgenden anhand einer Zeichnung erläu tert. Dabei zeigt:The invention is explained below with reference to a drawing tert. It shows:
Fig. 1 ein Ersatzschaltbild eines ersten Ausführungsbei spiels der Erfindung, Fig. 1 is an equivalent circuit diagram of a first Ausführungsbei game of the invention,
Fig. 2 eine schematische Darstellung des ersten Ausfüh rungsbeispiels der Erfindung, Fig. 2 is a schematic representation of the first exporting approximately of the invention;
Fig. 3 ein zweites Ausführungsbeispiel der Erfindung, Fig. 3 shows a second embodiment of the invention,
Fig. 4 ein drittes Ausführungsbeispiel der Erfindung, und Fig. 4 shows a third embodiment of the invention, and
Fig. 5 eine Darstellung einer möglichen mechanischen Ausbildung des Sensors nach der Erfindung. Fig. 5 shows a possible mechanical design of the sensor according to the invention.
Fig. 1 zeigt das Ersatzschaltbild eines Sensors nach ei nem ersten Ausführungsbeispiel der Erfindung und ver deutlicht, daß der Sensor aus einer Reihenschaltung aus einer Vielzahl von Widerständen 12 besteht, die jeweils über einen Leiter 14 überbrückt sind. Dabei sind die beiden Leiter 14, die die rechts angeordneten Widerstän de 12 überbrücken, als unterbrochen dargestellt. Der an den nach außen geführten Meßanschlüssen 20 zu messende Widerstand der Reihenschaltung ist von der Anzahl der unterbrochenen Leiter 14 abhängig: Bei einem Zustand, bei dem alle Leiter intakt sind, geht der Widerstand der Reihenschaltung gegen Null, bei Unterbrechung aller Überbrückungen entspricht der Widerstand der Reihen schaltung der Summe der einzelnen Widerstände 12. Mit der Zunahme der Anzahl der Unterbrechungen der Leiter 14 nimmt der Widerstand der Reihenschaltung damit gestuft linear zu. Fig. 1 shows the equivalent circuit diagram of a sensor according to a first embodiment of the invention and shows clearly that the sensor consists of a series connection of a plurality of resistors 12 , each of which is bridged by a conductor 14 . The two conductors 14 , which bridge the resistors 12 arranged on the right, are shown as interrupted. The resistance of the series connection to be measured at the measuring connections 20 leading to the outside depends on the number of interrupted conductors 14 : in a state in which all conductors are intact, the resistance of the series connection goes to zero, when all bridges are interrupted, the resistance corresponds to Series connection of the sum of the individual resistors 12th With the increase in the number of interruptions of the conductors 14 , the resistance of the series circuit increases linearly in steps.
Fig. 2 zeigt eine räumliche Ausgestaltung des Sensors nach dem ersten Ausführungsbeispiel. Die Zeichnung ver deutlicht, daß der Sensor durch einen Stift 10 gebildet ist, der in das Maschinenteil derart eingesetzt ist, daß er mit dessen einem Verschleiß ausgesetzten Oberfläche fluchtet. Die die Widerstände 12 überbrückenden Leiter 14 sind mit einem mit einem unterschiedlichen Abstand von dem mit der einem Verschleiß ausgesetzten Oberfläche fluchtenden Ende 18 des Stiftes 10 verlaufenden Ab schnitt 16 versehen. Mit zunehmendem Verschleiß, der in Richtung des Pfeiles, also von oben nach unten, auf tritt, wird ein Leiter 14 nach dem anderen unterbrochen, was zu einer entsprechenden Erhöhung des Gesamtwider stands der Reihenschaltung von Widerständen 12 führt. Der an den nach außen geführten Meßanschlüssen 20 gemes sene Widerstand entspricht damit der Anzahl der nicht unterbrochenen Leiter 14 und damit gibt so die durch den Verschleiß erfolgte Kürzung des Stiftes 10 wieder. Fig. 2 shows a spatial configuration of the sensor according to the first embodiment. The drawing shows that the sensor is formed by a pin 10 which is inserted into the machine part in such a way that it is aligned with its surface which is exposed to wear. The resistors 12 bridging conductor 14 are provided with a different distance from the end aligned with the surface exposed to wear end 18 of the pin 10 extending from section 16 . With increasing wear, which occurs in the direction of the arrow, that is, from top to bottom, one conductor 14 after the other is interrupted, which leads to a corresponding increase in the overall resistance of the series connection of resistors 12 . The measured at the outward measuring terminals 20 measured resistance thus corresponds to the number of uninterrupted conductors 14 and thus reflects the shortening of the pin 10 caused by wear.
Bei dem in Fig. 3 dargestellten Ausführungsbeispiel sind die elektrischen Elemente als Kapazitäten 32 ausgebil det, die in einer Parallelschaltung angeordnet sind. Mit zunehmendem Verschleiß, der auch hier von oben nach un ten auftritt, werden die Leiter 34, die die Kapazitäten 32 miteinander verbinden, weggeschliffen, die Gesamtka pazität der Parallelschaltung nimmt entsprechend ab. Bei diesem Ausführungsbeispiel werden auch die Kapazitäten 32 selbst mit weggeschliffen.In the embodiment shown in FIG. 3, the electrical elements are designed as capacitances 32 , which are arranged in a parallel connection. With increasing wear, which also occurs from top to bottom here, the conductors 34 , which connect the capacitances 32, are ground away, the total capacitance of the parallel connection decreases accordingly. In this exemplary embodiment, the capacitances 32 themselves are also ground away.
Bei dem in Fig. 4 dargestellten Ausführungsbeispiel da gegen werden lediglich die Leiter 34, die die Kapazitä ten 32 miteinander verbinden, weggeschliffen, die Kapa zitäten 32 selbst sind mit erheblichem Abstand von der dem Verschleiß ausgesetzten Ende des Sensors angeordnet.In the exemplary embodiment shown in FIG. 4, only the conductors 34 , which connect the capacities 32 to one another, are ground away, the capacities 32 themselves are arranged at a considerable distance from the end of the sensor which is exposed to wear.
Fig. 5 zeigt, daß der Stift 10 derart ausgebildet sein kann, daß die elektrischen Elemente 12, 32 und Leiter 14, 34 in einem Chip ausgebildet sind, was in den Stift 10 eingesetzt ist. Dabei ist das Chip 22, 42 fluchtend mit dem mit dem Verschleiß ausgesetzten Oberfläche des Maschinenteils fluchtenden Ende 18, 38 des Stifts 10, 30 fluchtend eingebracht. Bei Beginn des Verschleißes wird also sogleich das Chip 22, 42 angegriffen, die in diesem dem Ende 18, 38 zugewandten Leiter werden nacheinander mit zunehmendem Verschleiß abgeschliffen, was eine Ände rung des elektrischen Wertes der Reihenschaltung von Wi derständen bzw. der Parallelschaltung von Kapazitäten bewirkt. Fig. 5 shows that the pin 10 can be formed such that the electrical elements 12 , 32 and conductors 14 , 34 are formed in a chip, which is inserted in the pin 10 . In this case, the chip 22 , 42 is introduced in alignment with the end 18 , 38 of the pin 10 , 30 which is in alignment with the surface of the machine part exposed to wear. At the beginning of wear, the chip 22 , 42 is attacked immediately, the conductors in this end 18 , 38 facing are successively ground down with increasing wear, which causes a change in the electrical value of the series connection of resistors or the parallel connection of capacitances .
Zeichnerisch nicht dargestellt ist ein bevorzugtes Aus führungsbeispiel, bei dem zwei oder mehr gleichartige Anordnungen aus Leitern, elektrischen Elementen und Meß anschlüssen vorgesehen sind, wobei der Abstand der Ab schnitte 16, 36 der Leiter 14, 34 der einzelnen Anord nungen von der mit einem Verschleiß ausgesetzten Ober fläche des Maschinenteils fluchtenden Ende 18, 38 des Stifts 10, 30 zueinander gleichmäßig versetzt ist. Die ses Ausführungsbeispiel hat den Vorteil einer höheren Auflösung und der Möglichkeit einer Überprüfung des bei einer Anordnung erfaßten Meßergebnisses durch Vergleich mit dem einer anderen Anordnung.Not shown in the drawing is a preferred exemplary embodiment, in which two or more similar arrangements of conductors, electrical elements and measuring connections are provided, the distance between the sections 16 , 36 of the conductors 14 , 34 of the individual arrangements being worn exposed upper surface of the machine part aligned end 18 , 38 of the pin 10 , 30 is evenly offset from each other. This embodiment has the advantage of a higher resolution and the possibility of checking the measurement result recorded in one arrangement by comparison with that of another arrangement.
Es versteht sich, daß das Material des Stifts und des Chips nicht härter sein sollte als das Material des Maschinenteils, dessen Verschleiß gemessen werden soll. Der Abstand der einzelnen Leiterbahnen voneinander und deren Breite können etwa 10 µm betragen.It is understood that the material of the pen and Chips should not be harder than the material of the chip Machine part whose wear is to be measured. The distance between the individual conductor tracks and their width can be about 10 microns.
Es versteht sich weiter, daß das für eine feste Veranke rung des Stiftes in dem Maschinenteil Sorge zu tragen ist.It is further understood that this is for a firm anchorage of the pin in the machine part is.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4312354A DE4312354C1 (en) | 1993-04-16 | 1993-04-16 | Wear measuring sensor, e.g. for vehicle brake pad - uses resistor chain with bridging conductor loops at staggered distances from component surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4312354A DE4312354C1 (en) | 1993-04-16 | 1993-04-16 | Wear measuring sensor, e.g. for vehicle brake pad - uses resistor chain with bridging conductor loops at staggered distances from component surface |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4312354C1 true DE4312354C1 (en) | 1994-06-16 |
Family
ID=6485554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE4312354A Expired - Lifetime DE4312354C1 (en) | 1993-04-16 | 1993-04-16 | Wear measuring sensor, e.g. for vehicle brake pad - uses resistor chain with bridging conductor loops at staggered distances from component surface |
Country Status (1)
Country | Link |
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DE (1) | DE4312354C1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4445352C1 (en) * | 1994-12-20 | 1996-01-11 | Reifenhaeuser Masch | Extruder wear monitoring |
EP0742380A1 (en) * | 1995-05-06 | 1996-11-13 | VDO Adolf Schindling AG | Multistep wear indicator for brake pads |
DE19620954A1 (en) * | 1996-05-24 | 1997-11-27 | Putzmeister Ag | Monitor for wear and tear in feeder tubes |
JPH10307981A (en) * | 1997-05-02 | 1998-11-17 | Yokohama Rubber Co Ltd:The | Method for detecting tire wear state and device for monitoring tire loading transponder and vehicle tire wear state |
DE10105781B4 (en) * | 2000-02-07 | 2004-03-04 | Gaiser, Cornelius, Dipl.-Wirtsch.-Ing. | Device for recording and method for evaluating geometry changes on rotating objects |
DE102004010348A1 (en) * | 2004-03-03 | 2005-09-22 | Meri Entsorgungstechnik für die Papierindustrie GmbH | Paper recycling helical compactor blades have embedded transponders that are destroyed on reaching point of maximum allowable wear |
DE102006004730A1 (en) * | 2006-02-02 | 2007-08-09 | Bayerische Motoren Werke Ag | Method for monitoring the strength of at least one friction partner of a vehicle friction brake and vehicle friction brake with a device for carrying out the method |
GB2449709A (en) * | 2007-06-02 | 2008-12-03 | Rolls Royce Plc | Method and apparatus for determining a clearance between relatively movable components |
US7677079B2 (en) | 2004-02-27 | 2010-03-16 | Mcgill University | Method and device for sensing wear |
WO2014067636A2 (en) * | 2012-10-29 | 2014-05-08 | Andritz Ag | Sensor for wear on a working surface |
US20150152931A1 (en) * | 2013-12-02 | 2015-06-04 | GM Global Technology Operations LLC | Brake pad life monitoring system |
CN105107567A (en) * | 2015-09-16 | 2015-12-02 | 上海创申重型装备制造有限公司 | Jaw crusher with toothed plate abrasion loss detection sensor and sensor thereof |
CN105606013A (en) * | 2015-10-29 | 2016-05-25 | 上海创申重型装备制造有限公司 | Wear extent detecting sensor for wear resistant member of crusher |
CN105697620A (en) * | 2016-05-06 | 2016-06-22 | 铜仁学院 | Device applicable to exploring thickness range of brake pad and manufacturing method thereof |
CN105841597A (en) * | 2016-05-12 | 2016-08-10 | 陕西科技大学 | Papermaking disc grinder millstone wear detection device and method |
WO2017017289A1 (en) * | 2015-07-24 | 2017-02-02 | Metalogenia Research & Technologies S.L. | Wear sensor and wear element, and corresponding assembly and use |
CN108927245A (en) * | 2017-05-25 | 2018-12-04 | 郑州洁普智能环保技术有限公司 | Wear quantity sensor and the jaw crusher using the sensor |
CN109131343A (en) * | 2017-06-28 | 2019-01-04 | 长城汽车股份有限公司 | A kind of use state of friction plate determines method and system |
DE102017221190A1 (en) * | 2017-11-27 | 2019-05-29 | Universität Stuttgart | Method and device for determining at least one measurable variable with respect to a property of a surface of a tool |
DE102014112402B4 (en) * | 2014-08-28 | 2021-01-21 | Schmitz Cargobull Aktiengesellschaft | Brake system of a commercial vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3007887A1 (en) * | 1980-03-01 | 1981-09-24 | Bergische Stahl-Industrie, 5630 Remscheid | Brake pad wear measuring system - uses sealed measuring unit with wire loops at various depths and therefore cut in sequence during wearing |
DE3416343A1 (en) * | 1984-05-03 | 1985-11-07 | Rheinhütte vorm. Ludwig Beck GmbH & Co, 6200 Wiesbaden | Bearing inspection device |
DE3818877A1 (en) * | 1988-06-01 | 1989-12-14 | Bergmann Kabelwerke Ag | MONITORING DEVICE FOR A COVER WEARABLE BY WEAR |
-
1993
- 1993-04-16 DE DE4312354A patent/DE4312354C1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3007887A1 (en) * | 1980-03-01 | 1981-09-24 | Bergische Stahl-Industrie, 5630 Remscheid | Brake pad wear measuring system - uses sealed measuring unit with wire loops at various depths and therefore cut in sequence during wearing |
DE3416343A1 (en) * | 1984-05-03 | 1985-11-07 | Rheinhütte vorm. Ludwig Beck GmbH & Co, 6200 Wiesbaden | Bearing inspection device |
DE3818877A1 (en) * | 1988-06-01 | 1989-12-14 | Bergmann Kabelwerke Ag | MONITORING DEVICE FOR A COVER WEARABLE BY WEAR |
Non-Patent Citations (1)
Title |
---|
Handbuch der industriellen Meßtechnik, P. Profos, Hrsg., Essen 1987, S. 138-141 * |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4445352C1 (en) * | 1994-12-20 | 1996-01-11 | Reifenhaeuser Masch | Extruder wear monitoring |
EP0742380A1 (en) * | 1995-05-06 | 1996-11-13 | VDO Adolf Schindling AG | Multistep wear indicator for brake pads |
DE19620954A1 (en) * | 1996-05-24 | 1997-11-27 | Putzmeister Ag | Monitor for wear and tear in feeder tubes |
DE19620954B4 (en) * | 1996-05-24 | 2005-07-07 | Putzmeister Ag | Arrangement for monitoring the wear of pipes subjected to material abrasion |
JPH10307981A (en) * | 1997-05-02 | 1998-11-17 | Yokohama Rubber Co Ltd:The | Method for detecting tire wear state and device for monitoring tire loading transponder and vehicle tire wear state |
DE10105781B4 (en) * | 2000-02-07 | 2004-03-04 | Gaiser, Cornelius, Dipl.-Wirtsch.-Ing. | Device for recording and method for evaluating geometry changes on rotating objects |
US7677079B2 (en) | 2004-02-27 | 2010-03-16 | Mcgill University | Method and device for sensing wear |
DE102004010348A1 (en) * | 2004-03-03 | 2005-09-22 | Meri Entsorgungstechnik für die Papierindustrie GmbH | Paper recycling helical compactor blades have embedded transponders that are destroyed on reaching point of maximum allowable wear |
DE102006004730B4 (en) * | 2006-02-02 | 2010-07-08 | Bayerische Motoren Werke Aktiengesellschaft | Method for monitoring the strength of at least one friction partner of a vehicle friction brake and vehicle friction brake with a device for carrying out the method |
DE102006004730A1 (en) * | 2006-02-02 | 2007-08-09 | Bayerische Motoren Werke Ag | Method for monitoring the strength of at least one friction partner of a vehicle friction brake and vehicle friction brake with a device for carrying out the method |
GB2449709A (en) * | 2007-06-02 | 2008-12-03 | Rolls Royce Plc | Method and apparatus for determining a clearance between relatively movable components |
WO2014067636A2 (en) * | 2012-10-29 | 2014-05-08 | Andritz Ag | Sensor for wear on a working surface |
AT513497A4 (en) * | 2012-10-29 | 2014-05-15 | Andritz Ag Maschf | Sensor for wear on a work surface |
AT513497B1 (en) * | 2012-10-29 | 2014-05-15 | Andritz Ag Maschf | Sensor for wear on a work surface |
WO2014067636A3 (en) * | 2012-10-29 | 2014-10-09 | Andritz Ag | Sensor for wear on a working surface |
US20150152931A1 (en) * | 2013-12-02 | 2015-06-04 | GM Global Technology Operations LLC | Brake pad life monitoring system |
US9316278B2 (en) * | 2013-12-02 | 2016-04-19 | GM Global Technology Operations LLC | Brake pad life monitoring system |
DE102014112402B4 (en) * | 2014-08-28 | 2021-01-21 | Schmitz Cargobull Aktiengesellschaft | Brake system of a commercial vehicle |
WO2017017289A1 (en) * | 2015-07-24 | 2017-02-02 | Metalogenia Research & Technologies S.L. | Wear sensor and wear element, and corresponding assembly and use |
US10677699B2 (en) | 2015-07-24 | 2020-06-09 | Metalogenia Research & Technologies S.L. | Wear sensor and the corresponding wear element, assembly and use |
AU2015403425B2 (en) * | 2015-07-24 | 2020-02-27 | Metalogenia Research & Technologies S.L. | Wear sensor and wear element, and corresponding assembly and use |
CN105107567A (en) * | 2015-09-16 | 2015-12-02 | 上海创申重型装备制造有限公司 | Jaw crusher with toothed plate abrasion loss detection sensor and sensor thereof |
CN105606013A (en) * | 2015-10-29 | 2016-05-25 | 上海创申重型装备制造有限公司 | Wear extent detecting sensor for wear resistant member of crusher |
CN105697620B (en) * | 2016-05-06 | 2017-12-22 | 铜仁学院 | A kind of device and manufacture method that can be used for detection brake block thickness range |
CN105697620A (en) * | 2016-05-06 | 2016-06-22 | 铜仁学院 | Device applicable to exploring thickness range of brake pad and manufacturing method thereof |
CN105841597B (en) * | 2016-05-12 | 2018-05-22 | 陕西科技大学 | A kind of finishing papermaking disk milling machine abrasive disk abrasion detection device and method |
CN105841597A (en) * | 2016-05-12 | 2016-08-10 | 陕西科技大学 | Papermaking disc grinder millstone wear detection device and method |
CN108927245A (en) * | 2017-05-25 | 2018-12-04 | 郑州洁普智能环保技术有限公司 | Wear quantity sensor and the jaw crusher using the sensor |
CN109131343A (en) * | 2017-06-28 | 2019-01-04 | 长城汽车股份有限公司 | A kind of use state of friction plate determines method and system |
CN109131343B (en) * | 2017-06-28 | 2021-02-12 | 长城汽车股份有限公司 | Method and system for determining use state of friction plate |
DE102017221190A1 (en) * | 2017-11-27 | 2019-05-29 | Universität Stuttgart | Method and device for determining at least one measurable variable with respect to a property of a surface of a tool |
WO2019101982A1 (en) | 2017-11-27 | 2019-05-31 | Universität Stuttgart | Method and device for determining at least one metrologically detectable variable relating a property of a surface of a tool |
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