WO2008122306A1 - Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication - Google Patents

Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication Download PDF

Info

Publication number
WO2008122306A1
WO2008122306A1 PCT/EP2007/003312 EP2007003312W WO2008122306A1 WO 2008122306 A1 WO2008122306 A1 WO 2008122306A1 EP 2007003312 W EP2007003312 W EP 2007003312W WO 2008122306 A1 WO2008122306 A1 WO 2008122306A1
Authority
WO
WIPO (PCT)
Prior art keywords
weighing device
weighing
plate
coating
evaluation unit
Prior art date
Application number
PCT/EP2007/003312
Other languages
German (de)
English (en)
Inventor
Ralf Bandorf
Holger Lüthje
Saskia Biehl
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Priority to PCT/EP2007/003312 priority Critical patent/WO2008122306A1/fr
Publication of WO2008122306A1 publication Critical patent/WO2008122306A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
    • G01G19/021—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles having electrical weight-sensitive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
    • G01G23/37—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
    • G01G23/3728—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/13—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing having piezoelectric or piezoresistive properties

Definitions

  • the subject matter of the invention is a transportable, modular weighing system which consists of at least one weighing device and a data evaluation unit which can be connected to it.
  • the weighing device has a sensor arrangement for converting a mechanical load into an electrical signal and a measuring device for measuring the electrical signal, wherein the sensor arrangement is arranged on a plate-shaped carrier.
  • the weighing system consists of individual weighing plates, wherein the weighing plates are equipped with a sensor arrangement.
  • the sensor arrangements have strain gauges.
  • the sensor arrangement is located within a plate-shaped carrier which is covered by a cover plate.
  • the sensor arrangement has both mechanical and electrical components, and is based on a complicated structure.
  • the piezosensor consists of a piezocable which is inserted into a metal rail.
  • the sensor is designed as a strip sensor, in which it is not possible to capture the entire tire contact surface on the sensor. The signal must be integrated when rolling the tire via the sensor.
  • the object of the present invention is to provide a weighing device and a weighing system, which can be designed to be transportable on the one hand and on the other hand have a straightforward and robust construction.
  • the object is solved by the subject matter of claim 1, the weighing system of claim 13 and the method of weighing objects of claim 15.
  • a weighing device has a sensor arrangement for converting a mechanical load into an electrical signal and a measuring device for measuring the electrical signal, wherein the sensor arrangement is arranged on a plate-shaped carrier.
  • the plate-shaped carrier has a coating of a piezoresistive material, which changes its electrical resistance under mechanical stress.
  • the advantage of such a weighing device is that the sensor arrangement arranged in the coating can be made extremely flat.
  • the thickness of the coating can range from a few micrometers to less than one centimeter.
  • the coating in this case has a piezoresistive material.
  • piezoresistive hard material layers are suitable for this purpose.
  • Such hard material layers can be applied to the plate-shaped carrier by conventional methods. In this case, physical as well as chemical, as well as plasma-based deposition methods are suitable. With the help of these methods, an extremely hard and abrasion-resistant Layering be applied to the plate-shaped carrier.
  • the piezoresistive layers of hard material are deformed at a molecular level under mechanical stress, which results in a change in the specific resistance of the hard material layers. This change in resistivity can be translated into a mechanical load by means of a force-resistance characteristic.
  • the coating is in the weighing device according to the invention in connection with a measuring device.
  • a measuring device This can be integrated both in the plate-shaped carrier and formed as an external module.
  • the measuring device thereby provides a current or a voltage source and builds the piezoresisitive coating as a variable resistor in a circuit.
  • the varying resistivity of the piezoresistive coating can be measured and the weight force acting on the layer can be determined by a separate calibration of the device from the change in the specific resistance.
  • a high-load weighing device can be produced with a plate-shaped carrier, which has only a small structural height of a few millimeters up to a few centimeters , which due to their small size and low weight easily, for example, in the trunk of a car, can be accommodated. Due to the Fixed connection between the plate-shaped carrier and the coating, in particular with a piezoresistive hard material layer, can also achieve long lifetimes of the weighing device.
  • the piezoresistive material is an amorphous carbon compound.
  • Amorphous carbon compounds have the advantage that they have both sp 2 and sp 3 compounds. They thus form an intermediate state between graphite and diamond and often combine the hardness of a diamond and electrical properties of a graphite with each other.
  • amorphous carbon layers can have a specific resistance between a few k ⁇ cm to several M ⁇ cm. Due to the high hardness and corrosion resistance and the proven piezoresistive properties of the amorphous carbon layers, these materials are very well suited to form the piezoresistive part of the coating of the plate-shaped carrier.
  • amorphous carbons as part of the coating of the weighing device are the diamond-like carbon (DLC) materials.
  • DLC is characterized by a high resistivity in the
  • DLC has a high hardness and a high corrosion resistance
  • the coating can already take place at a substrate temperature (for example on the support directly) of less than 150 ° C.
  • DLC has the advantage that with a targeted doping with different elements positive effects with respect to the temperature dependence of the resistivity can be achieved. This is particularly advantageous when the weighing device is to be used in a wide temperature range.
  • DLC is advantageous because it can be applied using common deposition techniques. There are no special requirements for the coating systems.
  • the electrical measuring device is connected to an information technology interface.
  • the information technology interface represents an interface between the measuring device and a data evaluation unit that can be connected to the weighing device.
  • the data determined by the measuring device can be stored in a standardized protocol so that the data evaluation units do not have any must have further modifications. It does not matter whether the data evaluation unit is designed as part of the weighing device itself or whether the data evaluation unit forms an external independent unit.
  • the information technology interface can be connected or connected to the data evaluation unit by radio and / or by cable.
  • this only has to be plugged into the weighing device, or be connected to it by radio in order to retrieve the measurement results held in the measuring device via the information technology interface.
  • the coating on the plate-shaped carrier consists of a layer composite.
  • at least one layer of the layer composite on the piezoresistive material may be present in the layer composite.
  • Adhesion enhancement layers may advantageously be mentioned here or insulation layers in order to produce an electrical insulation between the plate-shaped carrier and the piezoresistive layer.
  • the piezoresistive materials which are preferably used are often very hard and corrosion-resistant, it is advantageous to form an additional protective layer as part of the layered composite.
  • the coating also has thin-film electrodes.
  • thin-film electrodes With the help of thin-film electrodes, surprising effects can be achieved.
  • the thin-film electrodes can form a clearly defined contact surface between the piezoresistive material and the thin-film electrodes.
  • the measurements of the change in resistivity as a function of the mechanical load can be made in a region of the force-resistance characteristic of the piezoresistive layer, in which the characteristic of the material runs almost linearly.
  • This also provides the advantage that when loading and unloading the weighing device, a virtually hysteresis-free sensor can be created, i.
  • the force-resistance characteristic is almost the same with increasing and decreasing load.
  • a cover plate which covers the coating of the at least one plate-shaped carrier at least in parts.
  • the at least one plate-shaped carrier has a structuring on at least one side.
  • the structuring is chosen such that elevations are applied to the surface of the carrier provided with the coating, wherein at least the elevations are provided with the coating.
  • the loading of the weighing device primarily stresses the surface of the protruding structurings, which results in improved measurability of the mechanical stress through the coating.
  • in conjunction with an additional cover layer can be applied in this way a weight applied to a large area of the top of the cover plate, one on a relatively small area, the elevations of the plate-shaped support. The fact that the applied weight is transferred to the small area of the elevations increases the pressure and the accuracy of the measurement.
  • the coating with the piezoresistive material is applied only on the surface of the elevations of the plate-shaped carrier.
  • the coatings on the individual structuring by a connecting coating, for. Eg in the form of a strip connect with each other.
  • the weighing device is designed so that the surface of the plate-shaped carrier having the coating has a size between 200 and 20,000 square centimeters, preferably from 600 to 10,000 square centimeters.
  • the weight of a weighing device does not exceed 100 kilos, preferably 50 kilos.
  • the advantage of such a weighing device is that it can be easily transported and accommodated in small containers.
  • a weighing device In a weighing system according to the invention, at least one weighing device and a data evaluation unit are used.
  • the weighing device serves as a weighing module and the data evaluation unit as a collection point for the measurement data of all weighing modules used.
  • the advantage of such a weighing system is that it can be transported, for example, in the trunk of a car due to the small dimensions and can be quickly assembled and disassembled.
  • Objects at least one weighing device is used.
  • an object to be weighed is applied to the at least one weighing device, so that all bearing points of the object rest on at least one weighing device.
  • the changes in the electrical properties of the piezoresistive material of the loaded weighing devices are measured and the measurements are combined and evaluated to determine the weight of the object.
  • the weighing device according to the invention as well as the weighing system and the associated weighing method will be explained in greater detail on the basis of exemplary embodiments.
  • Figure Ia, b, c Inventive weighing device
  • Figure 3a, b alternative embodiments of a weighing device according to the invention
  • Figure 4 Schematic structure of a weighing device according to the invention with measuring device and information-technical interface
  • Figure 5 Inventive weighing system with multiple weighing devices and Data evaluation unit.
  • FIG. 1a shows a weighing device according to the invention which consists of a flat, flat, plate-shaped support 1 and a layer composite 2 applied thereon, wherein the individual layers of the layer composite 2 are applied to the planar support 1 by sputtering, vapor deposition or printing processes become .
  • the plate-shaped carrier 1 are preferably hard materials to choose, since they are compressible only to a small extent.
  • steel or composite materials can be used.
  • the plate-shaped support can also be made of softer materials, set the case that the weighing device is placed on a hard, level surface.
  • the size of the weighing device W is dependent on the object to be weighed.
  • a single weighing device W may have the size of a DIN A4 sheet or the size of up to 2 square meters. Even smaller weighing devices W are useful if used appropriately.
  • the weighing device W is shown as a rectangular shape, the shape does not affect the success of the measurement. It can clearly be seen that the weighing device W has the layer composite 2 over the entire surface. Because of the planar coating of the plate-shaped support lying below the layer composite 2, an exact positioning of the object to be weighed does not have to be carried out since the sensor arrangement consisting of the layer composite 2 covers large parts of the plate-shaped support covered.
  • the weighing device W has a
  • Base plate 1 on which surface (as shown in Figure Ib), a layer composite 2 is applied with an integrated DLC layer.
  • the composite layer 2 is completely covered by a cover plate 3. Due to the sandwich construction, an improved protective effect for the layer composite 2 is achieved.
  • a load acting on the surface of the cover plate 3 facing away from the layer composite 2 is transferred via the cover plate 3 to the layer composite 2 and measured as a change in resistance.
  • the pressure transfer to the layer composite 2 is most easily realized with the help of rigid cover plates and / or base plates.
  • a particularly simple embodiment of the weighing device W of Figure Ic is achieved when both the cover plate and the base plate, both of which are approximately the same size, each coated with a layer composite 2 with a DLC layer and the two DLC layers directly be placed on top of each other.
  • a measuring device for measuring the change in resistance is connected to the laminations.
  • FIGS. 2 a to c show various exemplary embodiments of a layer composite 2 according to the invention.
  • the layer composite consists of a DLC layer 21 which is disposed on the plate-shaped carrier 1 is applied directly.
  • the DLC layer 21 increasing surface of the plate-shaped support 1 is made of highly polished steel and has no contamination after treatment such. For example, oxidized surfaces. On this surface is the
  • DLC layer 21 grown by plasma enhanced chemical vapor deposition or physical vapor deposition techniques.
  • a thin-film electrode 22 is applied on the DLC layer 21, a thin-film electrode 22 is applied.
  • the DLC layer 21 can be electrically contacted by the metallic carrier 1 and the thin-film electrode 22.
  • Suitable materials for the plate-shaped support here are in particular carbide-forming metals, such as Al, Ti, Cr, Fe, W, Zr and Mo, since a particularly good adhesion of amorphous carbon layers can be achieved on these metals.
  • the thin-film electrode 22 applied to the DLC layer 21 in this case consists of Cr / Au and likewise forms a good adhesive bond with the DLC layer.
  • DLC is a material that is particularly suitable for weighing objects.
  • the vapor-deposited layer 21 is very hard, on the other hand inert to chemicals, ie in particular corrosion-resistant.
  • the use of other amorphous carbon layers is also possible.
  • carbon layers are also possible which have no hydrogen compounds or which are doped with additional metals in addition to the carbon-hydrogen compounds.
  • doped DLC layers have z. For example, improved properties with respect to the temperature dependence of the electrical resistance coefficient of the DLC layer.
  • FIG. 2b An alternative embodiment of the laminar composite 2 is shown in FIG. 2b.
  • the plate-shaped carrier 1 also consists of a conductive material.
  • An insulating layer 23 is applied directly on this.
  • the electrically conductive carrier can be electrically decoupled from a change in resistance of the DLC layer 21 to be measured.
  • a thin-film electrode 22 is applied to the insulation layer 23, for example in the form of Cr / Au, onto which in turn the DLC layer 21 is applied, which is likewise contacted with a thin-film electrode 22 '.
  • the arrangement shown in FIG. 2b is, in particular, a good layer composite arrangement when the support occupies a much larger area than the layer composite on the support. In this way, electrical losses occurring due to the carrier (for example due to long conduction paths) can be avoided, and a voltage to be measured or a current to be measured can be tapped directly at the thin-film electrodes 22 and 22 '. Furthermore, with the aid of the thin-film electrodes depicted in FIGS. 2 a and 2 b, a linearization of the force-resistance characteristic of the DLC layer 21 can be achieved.
  • the thin-film electrodes 22, 22 Due to the fact that the thin-film electrodes 22, 22 'have a defined contact surface with the DLC layer, only a small extent results in a so-called contact surface effect.
  • the contact surface effect occurs in particular when only parts of the DLC layer are loaded with a weight, ie the pressure only on a local area section of the DLC layer works. This is the normal case, since the amorphous DLC layer has a certain surface roughness. An electrode not following the contours of the DLC layer would therefore touch only the tips of the rough surface. As the load increases, this electrode would be pressed against the DLC layer until full-area contact between the electrode and the DLC layer is achieved.
  • FIG. 2 c shows a further embodiment of the laminar composite 2.
  • the plate-shaped carrier is made of a hard, insulating material.
  • a thin-film electrode 22 is applied on the insulating material.
  • the thin-film electrode 22 is made of a material which can not be connected to the desired extent with the DLC layer 21.
  • an adhesion-improving layer 24 is applied, which consists for example of transition metals such as chromium or titanium. With the aid of the adhesion-improving layer 24, the DLC layer 21 can be adhered to the laminate 2 and adhered to the thin-film electrodes 22, 22 '. This is a useful measure, in particular when improving the conductivity of contacts with silver or gold.
  • a further adhesion enhancement layer 24 ' is applied, on which in turn a thin-film electrode 22' is applied.
  • the layer composite is terminated by an insulating layer 23 ', which is intended to electrically insulate the underlying layer composite against external influences on the one hand, and on the other hand provides improved protection for the thin-film electrode 22'.
  • the DLC layer may have a thickness of 0.01 to 20 microns, preferably 3 to 6 microns.
  • FIGS. 3 a, b show an alternative embodiment of the weighing device according to the invention.
  • a plate-shaped carrier 1 can be seen, which has a structuring formed as extensions 11, 11 '. It is in each case a layer composite, wherein different layer composites can be connected to each other via electrical contacts on the surface of the extensions 11, 11 'applied.
  • the cover plate 3 in conjunction with the extensions 11, II 1 , and the layered composites 2, 2 'lying thereon has the result that a pressure which on the side facing away from the layer composite Cover plate 3 is applied is transferred to the laminates 2, 2 '. In this way, the layer composite can be applied to the plate-shaped carrier in a very efficient and economical manner, without diminishing the measuring accuracy during weighing.
  • the layer composites 2, 2 1 represent defined contact surfaces on which a pressure applied to the cover plate 3 can be measured. Since most amorphous carbon layers and in particular DLC layers measure a pressure, it is advantageous if a weight applied over a large area on the side of the cover plate 3 remote from the DLC layer is applied only to a few extensions 11, II 1 .
  • the cover plate 3 is in each case a layer composite 2, 2 ', 2 1 1 . It is possible for the layer composites 2, 2 ', 2 1 1 to be connected to one another directly, ie, by a narrow composite composite strip applied between the extensions 11, 11' and II 1 1 .
  • the structuring with the help of the extensions 11, II 1 and 11 '' can be adapted to the application of the weighing device.
  • the extensions 11, 11 ', II' 1 may also be rectangular or formed as a strip or as a cone, if offered by the object to be weighed.
  • the layer composites are arranged at least on the extensions.
  • FIG. 4 shows a weighing device W, wherein the thin-film electrodes 22, 22 'of the laminar composite 2 are connected to a measuring arrangement 4 via the contacts 5.
  • the change in resistance of the DLC layer 21 induced by an applied pressure F can be measured by means of a voltage source or a current source via a further connected measuring device, which is arranged within the measuring arrangement 4. Whether current or voltage is measured in the measuring unit depends on whether the amorphous carbon layer 21 has a very high or a very low specific resistance.
  • the measuring arrangement 4 can be accommodated inside the plate-shaped carrier 1. However, the measuring arrangement 4 can also be formed as an additional module, which is designed to be removable and thus allows for improved maintenance by the user.
  • One way of evaluating the measurement result is that in the measuring arrangement 4, a measuring device visually displays the voltage or current change, so that the user can read this value and transmit it to a data evaluation unit.
  • the data evaluation unit can also be designed in conjunction with the measuring arrangement 4, so that the measurement result of the measuring arrangement 4 is converted directly into a weight value, which can then be read on the individual weighing device.
  • the measuring arrangement 4 is connected to an information technology interface 6.
  • the information technology interface 6 benefits from the task of preparing the data measured by the measuring arrangement 4 in such a way that it can be transmitted by conventional data transmission methods to a data evaluation unit which is executed in the weighing device W or externally on the weighing device W.
  • FIG. 5 shows an exemplary weighing system according to the invention with four weighing devices W, W 1 , W 1 1 , W "and a data evaluation unit 7.
  • the weighing devices W, W 1 , W 1 1 , W ' 1 1 are connected via the respective information technology interface 5, 5 ', 5'',5' ' ⁇ connected to the data evaluation unit. 7
  • the connections 8 can be made by cable or cable. Also, a manual readout of the measurement data of the weighing devices W, W 1 , W 1 , W 1 "is possible with a corresponding device to the weighing devices.
  • a truck with two axes so on the weighing devices W, W 1 , W 1 ', W "driven so that all tires directly on a weighing device for
  • the individual weighing devices W, W 1 , W 1 ', W are positioned at suitable spatial distances from each other and aligned so that, for example, a motor vehicle or an aircraft can ride on the weighing device, that the entire weight through the plurality
  • the electrical resistance changes of the individual weighing devices in the data evaluation unit 7 are combined and calculated.
  • Load distribution (eg load of a truck) avoided and so the traffic safety can be increased.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un système de pesée composé d'au moins un dispositif de pesée (W) comportant un dispositif de détection (2) destiné à transformer une contrainte mécanique en un signal électrique, et un dispositif de mesure (4) destiné à mesurer le signal électrique, le dispositif de détection étant disposé sur un support en forme de plaque (1). Le support en forme de plaque (1) présente un revêtement (2) contenant un matériau piézorésistif (21) dont la résistance électrique varie sous une contrainte mécanique. Le système de pesée comporte par ailleurs une unité d'évaluation de données (7) fournissant avantageusement les données de mesure et calculant le poids d'un objet à mesurer.
PCT/EP2007/003312 2007-04-05 2007-04-05 Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication WO2008122306A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/003312 WO2008122306A1 (fr) 2007-04-05 2007-04-05 Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/003312 WO2008122306A1 (fr) 2007-04-05 2007-04-05 Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2008122306A1 true WO2008122306A1 (fr) 2008-10-16

Family

ID=38698329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/003312 WO2008122306A1 (fr) 2007-04-05 2007-04-05 Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2008122306A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793429A (en) * 1988-04-20 1988-12-27 Westinghouse Electric Corp. Dynamic vehicle-weighing system
WO1998030420A1 (fr) * 1997-01-08 1998-07-16 Trustees Of Boston University Detecteur de centre de gravite
DE19954164A1 (de) * 1999-11-10 2001-06-13 Fraunhofer Ges Forschung Sensor zur Zustandsbestimmung von Kenngrößen an mechanischen Komponenten unter Verwendung von amorphen Kohlenstoffschichten mit piezoresistiven Eigenschaften
FR2811753A1 (fr) * 2000-07-12 2002-01-18 Jeannine Rampal Pese-personne de poche
US20050011681A1 (en) * 2003-07-16 2005-01-20 Follonier Stephane Andre Flexible weighing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793429A (en) * 1988-04-20 1988-12-27 Westinghouse Electric Corp. Dynamic vehicle-weighing system
WO1998030420A1 (fr) * 1997-01-08 1998-07-16 Trustees Of Boston University Detecteur de centre de gravite
DE19954164A1 (de) * 1999-11-10 2001-06-13 Fraunhofer Ges Forschung Sensor zur Zustandsbestimmung von Kenngrößen an mechanischen Komponenten unter Verwendung von amorphen Kohlenstoffschichten mit piezoresistiven Eigenschaften
FR2811753A1 (fr) * 2000-07-12 2002-01-18 Jeannine Rampal Pese-personne de poche
US20050011681A1 (en) * 2003-07-16 2005-01-20 Follonier Stephane Andre Flexible weighing device

Similar Documents

Publication Publication Date Title
EP1560010B1 (fr) Cellule de mesure de force avec jauge de contrainte avec couche d'adhésif de polymer hybride inorganique-organique (ORMOCER)
EP1460398A1 (fr) Capteur de contrainte avec des éléments résistifs et piézoélectriques sensibles aux contraintes
DE102005002523B4 (de) Vorrichtung zur Messung der Kraft bei Bremsaktuatoren
EP2013598A1 (fr) Dispositif de mesure de force pour mesurer la force dans le cas d'actionneurs monolithiques, procédé de mesure d'une force et utilisation du dispositif de mesure de force
EP3722768B1 (fr) Dispositif capteur permettant de détecter des forces de freinage dans un véhicule et système de mesure
DE102012013110A1 (de) Vorrichtung zur Messung und Anzeige des Zuladegewichts eines Schienenfahrzeugs
DE102013204924A1 (de) Messung eines auf eine Lenkwelle einwirkenden Drehmoments
EP3499199B1 (fr) Capteur wim et procédé de fabrication du capteur wim
EP3702742B1 (fr) Procédé d'étalonnage d'un dispositif de pesée d'un essieu de véhicule d'un véhicule au moyen d'un dispositif d'étalonnage et dispositif d'étalonnage
WO2006136182A1 (fr) Detecteur de pression
EP3430348B1 (fr) Dispositif de mesure, véhicule automobile et procédé de détection d'une déformation momentanée d'un élément
DE102011077966B4 (de) Kraftmesszelle mit Glasfaser-Bragg-Gitter-Sensoren
DE102010054970B4 (de) Vorrichtung zum Wandeln einer Dehnung und/oder Stauchung in ein elektrisches Signal, insbesondere Dehnungsmessfolie
WO2008122306A1 (fr) Système de pesée transportable comportant un dispositif de pesée et procédé de fabrication
DE102010008397B4 (de) Sensorsystem zur Bestimmung der Ermüdung an metallischen Bauteilen
DE8326488U1 (de) Kraft- bzw. druckmessgeber
DE102008041771B4 (de) Messvorrichtung mit verstimmbarem Widerstand
EP3676560B1 (fr) Dispositif de mesure d'allongement
WO2012010301A1 (fr) Jauge de contrainte
WO2020156845A1 (fr) Dispositif de détection d'une charge sur un rail et procédé de montage d'un tel dispositif dans un rail
EP0549875A1 (fr) Capteur de force avec anneau coudé
DE102011107576A1 (de) Entkoppelter Sensorträger für Dehnungsmessung und Grenzwertüberwachung mit piezoresistiven Fasersensoren
DE102018205552A1 (de) Verfahren zum Herstellen einer Sensoreinrichtung, Verfahren zum Anordnen einer Sensoreinrichtung sowie Fahrwerkbauteil mit einer Sensoreinrichtung
DE60218001T2 (de) Verfahren und Vorrichtung zur Messung einer Materialeigenschaft
DE102011106894B3 (de) Vorrichtung zur simultanen Erfassung von Kraft- und Momentenkomponenten

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07724250

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07724250

Country of ref document: EP

Kind code of ref document: A1