EP1917514A1 - Method and assembly for supplying power to an active independent component - Google Patents

Method and assembly for supplying power to an active independent component

Info

Publication number
EP1917514A1
EP1917514A1 EP06794296A EP06794296A EP1917514A1 EP 1917514 A1 EP1917514 A1 EP 1917514A1 EP 06794296 A EP06794296 A EP 06794296A EP 06794296 A EP06794296 A EP 06794296A EP 1917514 A1 EP1917514 A1 EP 1917514A1
Authority
EP
European Patent Office
Prior art keywords
active component
assembly
electronic system
substrate
bearing
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.)
Withdrawn
Application number
EP06794296A
Other languages
German (de)
French (fr)
Inventor
Marc-Alain Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN SNR Roulements SA
Original Assignee
Societe Nouvelle de Roulements SNR SA
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 Societe Nouvelle de Roulements SNR SA filed Critical Societe Nouvelle de Roulements SNR SA
Publication of EP1917514A1 publication Critical patent/EP1917514A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
    • H02N11/002—Generators
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • 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

Definitions

  • the invention relates to a method of supplying electrical power to at least one active component of an autonomous electronic system forming part of an assembly comprising a rolling bearing, as well as such an assembly.
  • the invention aims in particular to solve the problems mentioned above by proposing a method and an assembly that makes it possible to use a source of energy specific to said assembly for supplying an active component electrically, and this by improving the modularity of the solution. mechanical and electrical integration constraints.
  • the invention proposes a method of supplying electrical power to at least one active component of an autonomous electronic system forming part of a mounting comprising a rolling bearing, said mounting comprising at least an area having variations of at least one state during rotation of the bearing, said method providing:
  • the invention proposes a mounting comprising a rolling bearing and an autonomous electronic system comprising at least one active component, said mounting comprising at least one zone having variations of at least one state during rotation of the bearing.
  • said arrangement being characterized in that said zone is equipped with a substrate which comprises means for converting said variations into an electrical signal
  • said electronic system being mounted on the substrate with the active component in electrical communication with the conversion means by means of intermediate of an operating device of the electrical signal which is integrated in said system, said operating device being arranged to transform the electrical signal into the current necessary for the power supply of the active component.
  • FIG. 1 is a schematic view of an assembly comprising a bearing, the outer ring is equipped with a substrate on which an electronic system is mounted so as to supply electricity to an active component of said system;
  • FIG. 2 is a perspective view of a mounting comprising a motor vehicle wheel bearing, the outer ring of said bearing being equipped according to Figure 1.
  • the bearing comprises a fixed outer ring 1, a rotating inner ring 2 and rolling bodies arranged in a known manner between said rings to allow relative rotation of the rings 1, 2.
  • the fixed ring 1 comprises a flange 5 provided with four projections 5a disposed substantially at 90 ° from each other, in each of which a hole 6 for attachment to the frame is formed.
  • the flange 5 undergoes significant mechanical stresses which induce a deformation thereof.
  • the periodic passage of the rolling bodies induces periodic local deformations of the outer ring 1 and therefore that of the flange 5.
  • the invention proposes to use these periodic local deformations for supplying at least one active component of an electronic system 8 forming part of the assembly.
  • other areas of the mounting having mechanical deformations or variations of another state, such as mounting vibrations or temperature, can be used to generate electrical energy.
  • the rotating inner ring can be equipped according to the invention.
  • the active component may be formed of at least one sensor of an operating parameter of the assembly, such as a sensor of vibration, position, speed, temperature, humidity, wear.
  • At least one active identification component can be provided, such as an RFID radio frequency tag in which information concerning the assembly or its environment can be written and / or read.
  • the electronic system 8 is autonomous in electricity so in particular to overcome any wired connection between the mounting and the environment outside thereof. Thus, the operation of the electronic system 8 does not interfere with that of the assembly.
  • the invention provides to equip the flange 5 with a substrate 9 comprising means 10 for converting the deformations into an electrical signal.
  • the means 10 are arranged, particularly with regard to their geometry and / or their arrangement on the zone, to provide sufficient electrical energy for the supply of the active component.
  • This adaptation of the conversion means is in particular a function of the characteristics of the deformations, those of the zone and conditions of use of the assembly, so as to provide sufficient electrical power.
  • an operating device which is arranged to transform the electrical signal into the current necessary for the power supply of the active component is integrated into the electronic system 8.
  • the operating device allows the shaping of the electrical signal and adapting it to active component.
  • the integration of the operating device in the electronic system 8 makes it possible to satisfactorily meet the assembly and standardization constraints, in particular because it does not provide for the implementation of a separate electronic system for the generation of electronic devices. 'electric energy.
  • the electronic system 8 is intended to mount the electronic system 8 on the substrate 9 by making the active component in electrical communication with the conversion means via the operating device so as to supply said active component with the current electric.
  • the electronic system 8 being mounted on the substrate 9, the integration of said system in the assembly is simplified. Furthermore, it is possible to configure the substrate 9 so that it has mechanical protection characteristics of the electronic system 8 during operation of the assembly. Indeed, the substrate 9 acts as an interface between the electronic system 8 and the mounting area.
  • the conversion means 10 are based on a piezoelectric material.
  • the conversion means 10 may be based on a thermoelectric material.
  • the substrate 9 is formed of a plate of material, for example ceramic, which is associated on a side face of the flange 5, for example by gluing or the like.
  • the zone equipped with the substrate is chosen to present significant deformations, for example between two first projections 5a.
  • the substrate comprises a coating formed of a discrete network of the piezoelectric material, for example polymeric material.
  • This embodiment makes it possible to locate the energy conversion on areas of the substrate where the amplitudes of the periodic deformations are maximum, for example by optimizing the arrangement of the piezoelectric material.
  • the substrate 9 has a function of transmission of the deformations which can be optimized, so for example to concentrate said deformations at the piezoelectric material.
  • a continuous coating may be provided or the substrate may be made directly of piezoelectric material, for example of the ceramic type.
  • the shape, the surface and the thickness of the piezoelectric material can be adapted, in particular according to the characteristics of the periodic deformations, to provide sufficient electrical power to supply electricity to the active component.
  • the recoverable power is of the order of 300 ⁇ W / cm 3 by piezoelectric effect and of the order of 40 ⁇ W / cm 3 by Peltier effect.
  • the piezoelectric conversion means 10 are devoid of seismic mass, which facilitates their integration into the assembly.
  • the electronic system 8 is for example in the form of an electronic microsystem or a microelectromechanical system (MEMS) which integrates an operating device for example formed of an electronic circuit known to those skilled in the art.
  • MEMS microelectromechanical system
  • This type of system 8 has the advantage of being able to integrate several functions in a small footprint, by ensuring a protection of electronic components.
  • it can be connected in a standardized manner, for example by means of projected connecting lugs protruding from the packaging box.
  • the electronic system 8 can integrate at least one of the means chosen from the group comprising:
  • storage and energy management means for example in the form of a rechargeable battery
  • radio communication means with the active component; for example comprising a radio frequency transmitter low consumption integrated antenna which allows communication between the active component and an external central reception and signal processing.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

The invention relates to a method for supplying power to an independent active component and to assembly comprising a rolling bearing and an independent electronic system (8) comprising at least one active component, wherein said assembly comprises at least one area displaying the variations of at least one state during the bearing rotation. Said assembly is characterised in that said area is provided with a substrate (9) comprising means (10) for converting said variations into electric signal, the electronic system is mounted on the substrate (9) together with the active component electrically communicating with the conversion means (10) by means of a signal operating device which is integrated into the system and is used for converting the electric signal into current required for electrically feeding said active component.

Description

Procédé et montage d'alimentation électrique d'un composant actif autonome Method and mounting of power supply of an autonomous active component
L'invention concerne un procédé d'alimentation électrique d'au moins un composant actif d'un système électronique autonome faisant partie d'un montage comprenant un palier à roulement, ainsi qu'un tel montage.The invention relates to a method of supplying electrical power to at least one active component of an autonomous electronic system forming part of an assembly comprising a rolling bearing, as well as such an assembly.
Dans le cadre de l'utilisation de tels montages, il est de plus en plus souvent nécessaire de bénéficier d'informations sur des paramètres de fonctionnement et/ou d'identification dudit montage. En particulier, de telles informations sont utilisées pour optimiser le fonctionnement du montage et/ou sa maintenance.In the context of the use of such montages, it is increasingly necessary to benefit from information on operating parameters and / or identification of said assembly. In particular, such information is used to optimize the operation of the assembly and / or its maintenance.
Pour ce faire, il est connu de prévoir un système électronique comprenant un composant actif apte à fournir les informations pertinentes lorsque celles-ci sont nécessaires.To do this, it is known to provide an electronic system comprising an active component capable of providing the relevant information when it is necessary.
En particulier, dans nombres d'applications, il est souhaitable de prévoir un composant actif qui est autonome en énergie électrique, de sorte notamment à s'affranchir d'une liaison filaire entre celui-ci et l'environnement du montage.In particular, in many applications, it is desirable to provide an active component that is autonomous in electrical energy, so in particular to overcome a wired connection between it and the mounting environment.
Dans ces réalisations, il se pose toutefois le problème de l'alimentation électrique dans le temps du composant actif autonome. Pour tenter de résoudre ce problème, un grand nombre de réalisations ont été développées. En particulier, on a proposé d'utiliser un élément de type piézoélectrique comprenant une masse sismique pour transformer en énergie électrique une énergie mécanique générée lors du fonctionnement du montage.In these embodiments, however, there is the problem of the power supply over time of the autonomous active component. In an attempt to solve this problem, a large number of achievements have been developed. In particular, it has been proposed to use a piezoelectric type element comprising a seismic mass to transform into electrical energy mechanical energy generated during operation of the assembly.
Toutefois, ce type de solution est limité par les contraintes d'intégration du système électronique et de son alimentation électrique dans le montage, et ce notamment en termes dimensionnels et de poids. Par conséquent, pour chaque intégration envisagée, il est nécessaire de prévoir un développement spécifique tant du système électronique que de l'élément piézoélectrique, ce qui limite la modularité des solutions connues. L'invention vise notamment à résoudre les problèmes mentionnés ci-dessus en proposant un procédé et un montage qui permettent d'utiliser une source d'énergie propre audit montage pour alimenter électriquement un composant actif, et ce en améliorant la modularité de la solution vis-à-vis des contraintes mécaniques et électriques d'intégration.However, this type of solution is limited by the constraints of integration of the electronic system and its power supply in the assembly, and in particular in terms of size and weight. Therefore, for each integration considered, it is necessary to provide a specific development of both the electronic system and the piezoelectric element, which limits the modularity of known solutions. The invention aims in particular to solve the problems mentioned above by proposing a method and an assembly that makes it possible to use a source of energy specific to said assembly for supplying an active component electrically, and this by improving the modularity of the solution. mechanical and electrical integration constraints.
À cet effet, et selon un premier aspect, l'invention propose un procédé d'alimentation électrique d'au moins un composant actif d'un système électronique autonome faisant partie d'un montage comprenant un palier à roulement, ledit montage comprenant au moins une zone présentant des variations d'au moins un état lors de la rotation du palier, ledit procédé prévoyant :For this purpose, and according to a first aspect, the invention proposes a method of supplying electrical power to at least one active component of an autonomous electronic system forming part of a mounting comprising a rolling bearing, said mounting comprising at least an area having variations of at least one state during rotation of the bearing, said method providing:
- d'équiper ladite zone avec un substrat comprenant des moyens de conversion desdites variations en signal électrique, lesdits moyens étant agencés pour, en fonction des caractéristiques des variations et de celles de la zone, fournir une énergie électrique suffisante pour l'alimentation du composant actif ;- Equipping said area with a substrate comprising means for converting said variations into an electrical signal, said means being arranged to, depending on the characteristics of the variations and those of the area, provide sufficient electrical energy for the supply of the component active;
- d'intégrer au système électronique un dispositif d'exploitation qui est agencé pour transformer le signal électrique en courant nécessaire à l'alimentation électrique du composant actif ;- Integrating into the electronic system an operating device which is arranged to transform the electrical signal into the current necessary for the power supply of the active component;
- de monter le système électronique sur le substrat en mettant en communication électrique le composant actif avec les moyens de conversion par l'intermédiaire du dispositif d'exploitation de sorte à alimenter ledit composant actif avec le courant électrique.- Mount the electronic system on the substrate by placing in electrical communication the active component with the conversion means through the operating device so as to supply said active component with the electric current.
Selon un deuxième aspect, l'invention propose un montage comprenant un palier à roulement et un système électronique autonome comprenant au moins un composant actif, ledit montage comprenant au moins une zone présentant des variations d'au moins un état lors de la rotation du palier, ledit montage étant caractérisé en ce que ladite zone est équipée d'un substrat qui comprend des moyens de conversion desdites variations en signal électrique, ledit système électronique étant monté sur le substrat avec le composant actif en communication électrique avec les moyens de conversion par l'intermédiaire d'un dispositif d'exploitation du signal électrique qui est intégré audit système, ledit dispositif d'exploitation étant agencé pour transformer le signal électrique en courant nécessaire à l'alimentation électrique du composant actif.According to a second aspect, the invention proposes a mounting comprising a rolling bearing and an autonomous electronic system comprising at least one active component, said mounting comprising at least one zone having variations of at least one state during rotation of the bearing. , said arrangement being characterized in that said zone is equipped with a substrate which comprises means for converting said variations into an electrical signal, said electronic system being mounted on the substrate with the active component in electrical communication with the conversion means by means of intermediate of an operating device of the electrical signal which is integrated in said system, said operating device being arranged to transform the electrical signal into the current necessary for the power supply of the active component.
D'autres objets et avantages de l'invention apparaîtront au cours de la description qui suit, faite en référence aux dessins annexés, dans lesquels :Other objects and advantages of the invention will become apparent from the following description, made with reference to the appended drawings, in which:
- la figure 1 est une vue schématique d'un montage comprenant un roulement dont la bague extérieure est équipée d'un substrat sur lequel un système électronique est monté de sorte à alimenter en électricité un composant actif dudit système ;- Figure 1 is a schematic view of an assembly comprising a bearing, the outer ring is equipped with a substrate on which an electronic system is mounted so as to supply electricity to an active component of said system;
- la figure 2 est une vue en perspective d'un montage comprenant un roulement de roue de véhicule automobile, la bague extérieure dudit roulement étant équipée selon la figure 1.- Figure 2 is a perspective view of a mounting comprising a motor vehicle wheel bearing, the outer ring of said bearing being equipped according to Figure 1.
En relation avec les figures, on décrit un montage comprenant un roulement de roue de véhicule automobile. Toutefois, l'invention n'est nullement limitée à cette application spécifique puisqu'elle s'applique à tous types de montage comprenant un palier à roulement, que ce soit pour l'industrie automobile ou pour d'autres domaines techniques.In connection with the figures, there is described a mounting comprising a wheel bearing of a motor vehicle. However, the invention is not limited to this specific application since it applies to all types of assembly comprising a rolling bearing, whether for the automotive industry or for other technical fields.
Selon la figure 2, le roulement comprend une bague extérieure fixe 1 , une bague intérieure tournante 2 et des corps roulants disposés de façon connue entre lesdites bagues pour permettre la rotation relative des bagues 1, 2. La bague fixe 1 comprend une bride 5 pourvue de quatre saillies 5a disposées sensiblement à 90° les unes des autres, dans chacune desquelles un trou 6 de fixation au châssis est formé.According to FIG. 2, the bearing comprises a fixed outer ring 1, a rotating inner ring 2 and rolling bodies arranged in a known manner between said rings to allow relative rotation of the rings 1, 2. The fixed ring 1 comprises a flange 5 provided with four projections 5a disposed substantially at 90 ° from each other, in each of which a hole 6 for attachment to the frame is formed.
Lors de l'utilisation du montage, la bride 5 subit des contraintes mécaniques importantes qui induisent une déformation de celle-ci. En particulier, lors de la rotation du roulement, le passage périodique des corps roulants induit des déformations locales périodiques de la bague extérieure 1 et donc celle de la bride 5. Selon une réalisation, l'invention propose d'utiliser ces déformations locales périodiques pour alimenter au moins un composant actif d'un système électronique 8 faisant partie du montage. En variante ou en complément, d'autres zones du montage présentant des déformations mécaniques ou des variations d'un autre état, comme les vibrations du montage ou la température, peuvent être utilisées pour générer une énergie électrique. En particulier, la bague intérieure tournante peut être équipée selon l'invention.When using the assembly, the flange 5 undergoes significant mechanical stresses which induce a deformation thereof. In particular, during the rotation of the bearing, the periodic passage of the rolling bodies induces periodic local deformations of the outer ring 1 and therefore that of the flange 5. According to one embodiment, the invention proposes to use these periodic local deformations for supplying at least one active component of an electronic system 8 forming part of the assembly. Alternatively or additionally, other areas of the mounting having mechanical deformations or variations of another state, such as mounting vibrations or temperature, can be used to generate electrical energy. In particular, the rotating inner ring can be equipped according to the invention.
Le composant actif peut être formé d'au moins un capteur d'un paramètre de fonctionnement du montage, tel qu'un capteur de vibration, de position, de vitesse, de température, d'humidité, d'usure.The active component may be formed of at least one sensor of an operating parameter of the assembly, such as a sensor of vibration, position, speed, temperature, humidity, wear.
En outre, ou de façon alternative, on peut prévoir au moins un composant d'identification actif, telle qu'une étiquette radiofréquence de type RFID dans laquelle des informations concernant le montage ou son environnement peuvent être écrites et/ou lues.In addition, or alternatively, at least one active identification component can be provided, such as an RFID radio frequency tag in which information concerning the assembly or its environment can be written and / or read.
Le système électronique 8 est autonome en électricité de sorte notamment à s'affranchir de toute liaison filaire entre le montage et l'environnement extérieur à celui-ci. Ainsi, le fonctionnement du système électronique 8 n'interfère pas avec celui du montage.The electronic system 8 is autonomous in electricity so in particular to overcome any wired connection between the mounting and the environment outside thereof. Thus, the operation of the electronic system 8 does not interfere with that of the assembly.
Pour ce faire, l'invention prévoit d'équiper la bride 5 avec un substrat 9 comprenant des moyens de conversion 10 des déformations en signal électrique. Les moyens 10 sont agencés, notamment en ce qui concerne leur géométrie et/ou leur disposition sur la zone, pour fournir une énergie électrique suffisante pour l'alimentation du composant actif. Cette adaptation des moyens de conversion est notamment fonction des caractéristiques des déformations, de celles de la zone et des conditions d'utilisation du montage, de sorte à fournir une puissance électrique suffisante.To do this, the invention provides to equip the flange 5 with a substrate 9 comprising means 10 for converting the deformations into an electrical signal. The means 10 are arranged, particularly with regard to their geometry and / or their arrangement on the zone, to provide sufficient electrical energy for the supply of the active component. This adaptation of the conversion means is in particular a function of the characteristics of the deformations, those of the zone and conditions of use of the assembly, so as to provide sufficient electrical power.
Par ailleurs, un dispositif d'exploitation qui est agencé pour transformer le signal électrique en courant nécessaire à l'alimentation électrique du composant actif est intégré au système électronique 8. En particulier, le dispositif d'exploitation permet la mise en forme du signal électrique et l'adaptation de celui-ci au composant actif. L'intégration du dispositif d'exploitation dans le système électronique 8 permet de répondre de façon satisfaisante aux contraintes de montage et de standardisation, en particulier du fait qu'elle ne prévoit pas l'implantation d'un système électronique distinct pour la génération d'énergie électrique.Moreover, an operating device which is arranged to transform the electrical signal into the current necessary for the power supply of the active component is integrated into the electronic system 8. In particular, the operating device allows the shaping of the electrical signal and adapting it to active component. The integration of the operating device in the electronic system 8 makes it possible to satisfactorily meet the assembly and standardization constraints, in particular because it does not provide for the implementation of a separate electronic system for the generation of electronic devices. 'electric energy.
Selon l'invention, il est prévu de monter le système électronique 8 sur le substrat 9 en mettant en communication électrique le composant actif avec les moyens de conversion par l'intermédiaire du dispositif d'exploitation de sorte à alimenter ledit composant actif avec le courant électrique.According to the invention, it is intended to mount the electronic system 8 on the substrate 9 by making the active component in electrical communication with the conversion means via the operating device so as to supply said active component with the current electric.
Ainsi, il est possible de développer un système électronique 8 standard, notamment présentant un boîtier de conditionnement standard, pour une gamme de montage, qui est monté sur un substrat 9 spécifique à la zone de sorte à fournir l'alimentation électrique nécessaire. Cette réalisation permet notamment d'utiliser le même système électronique 8 pour différents montages, ou pour un même montage dans des conditions d'utilisation ou des zones différentes.Thus, it is possible to develop a standard electronic system 8, in particular having a standard packaging box, for a mounting range, which is mounted on a substrate 9 specific to the area so as to provide the necessary power supply. This embodiment makes it possible in particular to use the same electronic system 8 for different assemblies, or for the same assembly under conditions of use or different zones.
En outre, le système électronique 8 étant monté sur le substrat 9, l'intégration dudit système dans le montage en est simplifié. Par ailleurs, il est possible de configurer le substrat 9 de sorte qu'il présente des caractéristiques mécaniques de protection du système électronique 8 lors du fonctionnement du montage. En effet, le substrat 9 fait fonction d'interface entre le système électronique 8 et la zone du montage.In addition, the electronic system 8 being mounted on the substrate 9, the integration of said system in the assembly is simplified. Furthermore, it is possible to configure the substrate 9 so that it has mechanical protection characteristics of the electronic system 8 during operation of the assembly. Indeed, the substrate 9 acts as an interface between the electronic system 8 and the mounting area.
En relation avec les figures, on décrit un mode de réalisation d'un montage dans lequel les moyens de conversion 10 sont à base d'un matériau piézoélectrique. En variante, lorsque l'état variant lors de la rotation du palier est la température, les moyens de conversion 10 peuvent être à base d'un matériau thermoélectrique. En outre, on peut prévoir des moyens de conversion 10 à base de matériau piézoélectrique et de matériau thermoélectrique. Dans la réalisation représentée, le substrat 9 est formé d'une plaque de matériau, par exemple céramique, qui est associée sur une face latérale de la bride 5, par exemple par collage ou analogue. En particulier, la zone équipée du substrat est choisie pour présenter des déformations importantes, par exemple entre deux premières saillies 5a.In connection with the figures, there is described an embodiment of an assembly in which the conversion means 10 are based on a piezoelectric material. In a variant, when the state varying during the rotation of the bearing is the temperature, the conversion means 10 may be based on a thermoelectric material. In addition, it is possible to provide conversion means 10 based on piezoelectric material and thermoelectric material. In the embodiment shown, the substrate 9 is formed of a plate of material, for example ceramic, which is associated on a side face of the flange 5, for example by gluing or the like. In particular, the zone equipped with the substrate is chosen to present significant deformations, for example between two first projections 5a.
Le substrat comprend un revêtement formé d'un réseau discret du matériau piézoélectrique, par exemple polymérique. Cette réalisation permet de localiser la conversion d'énergie sur des zones du substrat où les amplitudes des déformations périodiques sont maximales, par exemple en optimisant la disposition du matériau piézoélectrique. En outre, le substrat 9 présente une fonction de transmission des déformations qui peut être optimisée, de sorte par exemple à concentrer lesdites déformations au niveau du matériau piézoélectrique.The substrate comprises a coating formed of a discrete network of the piezoelectric material, for example polymeric material. This embodiment makes it possible to locate the energy conversion on areas of the substrate where the amplitudes of the periodic deformations are maximum, for example by optimizing the arrangement of the piezoelectric material. In addition, the substrate 9 has a function of transmission of the deformations which can be optimized, so for example to concentrate said deformations at the piezoelectric material.
En variante, on peut prévoir un revêtement continu ou que le substrat soit réalisé directement en matériau piézoélectrique par exemple de type céramique. Dans ces réalisations, la forme, la surface et l'épaisseur du matériau piézoélectrique peuvent être adaptées, notamment en fonction des caractéristiques des déformations périodiques, pour fournir une puissance électrique suffisante pour alimenter en électricité le composant actif. Typiquement, dans le montage selon la figure 2, la puissance récupérable est de l'ordre de 300 μW/cm3 par effet piézoélectrique et de l'ordre de 40 μW/cm3 par effet Peltier.As a variant, a continuous coating may be provided or the substrate may be made directly of piezoelectric material, for example of the ceramic type. In these embodiments, the shape, the surface and the thickness of the piezoelectric material can be adapted, in particular according to the characteristics of the periodic deformations, to provide sufficient electrical power to supply electricity to the active component. Typically, in the assembly according to FIG. 2, the recoverable power is of the order of 300 μW / cm 3 by piezoelectric effect and of the order of 40 μW / cm 3 by Peltier effect.
Dans les réalisations décrites, les moyens de conversion piézoélectrique 10 sont dépourvus de masse sismique, ce qui facilite leur intégration dans le montage.In the embodiments described, the piezoelectric conversion means 10 are devoid of seismic mass, which facilitates their integration into the assembly.
Le système électronique 8 est par exemple sous la forme d'un microsystème électronique ou d'un système microélectromécanique (MEMS) qui intègre un dispositif d'exploitation par exemple formé d'un circuit électronique connu de l'homme du métier. Ce type de système 8 présente l'avantage de pouvoir intégrer plusieurs fonctions dans un encombrement réduit, en assurant une protection des composants électroniques. En outre, il peut être connecté de façon standardisée, par exemple au moyen de pattes de connexion prévues saillantes du boîtier de conditionnement.The electronic system 8 is for example in the form of an electronic microsystem or a microelectromechanical system (MEMS) which integrates an operating device for example formed of an electronic circuit known to those skilled in the art. This type of system 8 has the advantage of being able to integrate several functions in a small footprint, by ensuring a protection of electronic components. In addition, it can be connected in a standardized manner, for example by means of projected connecting lugs protruding from the packaging box.
Le système électronique 8 peut intégrer au moins l'un des moyens choisis dans le groupe comprenant :The electronic system 8 can integrate at least one of the means chosen from the group comprising:
- des moyens de stockage et de gestion de l'énergie, par exemple sous la forme d'une batterie rechargeable ;storage and energy management means, for example in the form of a rechargeable battery;
- des moyens de traitement des signaux issus du composant actif, par exemple sous la forme de moyens logiciels et de stockage des données qui peuvent être intégrés dans un ASIC ;means for processing the signals originating from the active component, for example in the form of software and data storage means that can be integrated in an ASIC;
- des moyens de communication radioélectrique avec le composant actif ; par exemple comprenant un transmetteur radiofréquence faible consommation à antenne intégrée qui permet la communication entre le composant actif et une centrale extérieure de réception et de traitement du signal.radio communication means with the active component; for example comprising a radio frequency transmitter low consumption integrated antenna which allows communication between the active component and an external central reception and signal processing.
Bien que la description soit réalisée en relation avec un substrat solidarisé à la bague extérieure du roulement, on peut prévoir d'équiper une autre zone du montage ou du roulement, par exemple un joint d'étanchéité ou la bague tournante de ce dernier. En outre, on peut prévoir plusieurs substrats équipant des zones différentes pour alimenter électriquement plusieurs composants actifs qui seraient nécessaires au montage. Although the description is made in relation to a substrate secured to the outer ring of the bearing, provision may be made to equip another zone of the assembly or of the bearing, for example a seal or the rotating ring of the latter. In addition, one can provide several substrates equipping different areas to electrically power several active components that would be necessary for mounting.

Claims

REVENDICATIONS
1. Procédé d'alimentation électrique d'au moins un composant actif d'un système électronique autonome (8) faisant partie d'un montage comprenant un palier à roulement, ledit montage comprenant au moins une zone présentant des variations d'au moins un état lors de la rotation du palier, ledit procédé prévoyant :A method of supplying electrical power to at least one active component of an autonomous electronic system (8) forming part of an assembly comprising a rolling bearing, said assembly comprising at least one zone having variations of at least one state during rotation of the bearing, said method providing:
- d'équiper ladite zone avec un substrat (9) comprenant des moyens de conversion (10) desdites variations en signal électrique, lesdits moyens étant agencés pour, en fonction des caractéristiques des variations et de celles de la zone, fournir une énergie électrique suffisante pour l'alimentation du composant actif ;- Equipping said area with a substrate (9) comprising means for converting (10) said variations into an electrical signal, said means being arranged to, depending on the characteristics of the variations and those of the zone, to provide sufficient electrical energy for feeding the active component;
- d'intégrer au système électronique (8) un dispositif d'exploitation qui est agencé pour transformer le signal électrique en courant nécessaire à l'alimentation électrique du composant actif ;- Integrating into the electronic system (8) an operating device which is arranged to convert the electrical signal into the current necessary for the power supply of the active component;
- de monter Ie système électronique (8) sur le substrat (9) en mettant en communication électrique le composant actif avec les moyens de conversion (10) par l'intermédiaire du dispositif d'exploitation de sorte à alimenter ledit composant actif avec le courant électrique.- Mounting the electronic system (8) on the substrate (9) by placing the active component in electrical communication with the conversion means (10) via the operating device so as to feed the active component with the current electric.
2. Procédé d'alimentation électrique selon la revendication 1 , caractérisé en ce que les variations d'état sont choisies dans le groupe comprenant les vibrations, les déformations périodiques du palier induit par la rotation dudit palier et les variations de température.2. Power supply method according to claim 1, characterized in that the state variations are selected from the group comprising the vibrations, the periodic deformations of the bearing induced by the rotation of said bearing and the temperature variations.
3. Procédé d'alimentation selon la revendication 1 ou 2, caractérisé en ce que la géométrie et/ou la disposition des moyens de conversion (10) est adaptée pour fournir une énergie électrique suffisante pour l'alimentation du composant actif.3. Feeding method according to claim 1 or 2, characterized in that the geometry and / or arrangement of the conversion means (10) is adapted to provide sufficient electrical energy for the supply of the active component.
4. Montage comprenant un palier à roulement et un système électronique autonome (8) comprenant au moins un composant actif, ledit montage comprenant au moins une zone présentant des variations d'au moins un état lors de la rotation du palier, ledit montage étant caractérisé en ce que ladite zone est équipée d'un substrat (8) qui comprend des moyens de conversion (10) desdites variations en signal électrique, ledit système électronique étant monté sur le substrat (8) avec le composant actif en communication électrique avec les moyens de conversion (10) par l'intermédiaire d'un dispositif d'exploitation du signal électrique qui est intégré audit système, ledit dispositif d'exploitation étant agencé pour transformer le signal électrique en courant nécessaire à l'alimentation électrique du composant actif.4. An assembly comprising a rolling bearing and an autonomous electronic system (8) comprising at least one active component, said assembly comprising at least one zone having variations of at least one state during the rotation of the bearing, said mounting being characterized in that said zone is equipped with a substrate (8) which comprises means for converting (10) said variations into an electrical signal, said electronic system being mounted on the substrate (8) with the active component in electrical communication with the conversion means (10). ) via an operating device of the electrical signal which is integrated in said system, said operating device being arranged to convert the electrical signal into current necessary for the power supply of the active component.
5. Montage selon la revendication 4, caractérisé en ce que le système électronique (8) comprend au moins un composant actif formé d'un capteur d'un paramètre de fonctionnement du montage.5. Assembly according to claim 4, characterized in that the electronic system (8) comprises at least one active component formed of a sensor of an operating parameter of the assembly.
6. Montage selon la revendication 4 ou 5, caractérisé en ce que le système électronique (8) comprend au moins un composant d'identification actif.6. Assembly according to claim 4 or 5, characterized in that the electronic system (8) comprises at least one active identification component.
7. Montage selon l'une quelconque des revendications 4 à 6, caractérisé en ce que le système électronique (8) intègre au moins l'un des moyens choisis dans le groupe comprenant des moyens de stockage de l'énergie, des moyens de traitement des signaux issus du composant actif, des moyens de communication radioélectrique avec le composant actif.7. Assembly according to any one of claims 4 to 6, characterized in that the electronic system (8) integrates at least one of the means selected from the group comprising means for storing energy, processing means signals from the active component, radio communication means with the active component.
8. Montage selon l'une quelconque des revendications 4 à 7, caractérisé en ce que les moyens de conversion (10) sont à base d'un matériau piézoélectrique et/ou d'un matériau thermoélectrique.8. Assembly according to any one of claims 4 to 7, characterized in that the conversion means (10) are based on a piezoelectric material and / or a thermoelectric material.
9. Montage selon l'une quelconque des revendications 4 à 8, caractérisé en ce que le substrat (9) intègre les moyens de conversion (10).9. Assembly according to any one of claims 4 to 8, characterized in that the substrate (9) incorporates the conversion means (10).
10. Montage selon l'une quelconque des revendications 4 à 8, caractérisé en ce que le substrat (9) comprend un revêtement intégrant les moyens de conversion10. Assembly according to any one of claims 4 to 8, characterized in that the substrate (9) comprises a coating incorporating the conversion means
(10).(10).
11. Montage selon la revendication 10, caractérisé en ce que le revêtement comprend un réseau discret de moyens de conversion (10). 11. An assembly according to claim 10, characterized in that the coating comprises a discrete network of conversion means (10).
12. Montage selon l'une quelconque des revendications 4 à 11 , caractérisé en ce que le substrat (9) est solidarisé à un élément (1 , 5) du palier à roulement.12. Assembly according to any one of claims 4 to 11, characterized in that the substrate (9) is secured to a member (1, 5) of the rolling bearing.
13. Montage selon la revendication 12, caractérisé en ce que l'élément est choisi dans le groupe comprenant les bagues (1) du roulement et un joint d'étanchéité du roulement. 13. Assembly according to claim 12, characterized in that the element is selected from the group comprising the rings (1) of the bearing and a bearing seal.
EP06794296A 2005-08-23 2006-08-04 Method and assembly for supplying power to an active independent component Withdrawn EP1917514A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0508680A FR2890256B1 (en) 2005-08-23 2005-08-23 METHOD AND ASSEMBLY FOR POWER SUPPLYING AN AUTONOMOUS ACTIVE COMPONENT
PCT/FR2006/001910 WO2007023214A1 (en) 2005-08-23 2006-08-04 Method and assembly for supplying power to an active independent component

Publications (1)

Publication Number Publication Date
EP1917514A1 true EP1917514A1 (en) 2008-05-07

Family

ID=36190504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794296A Withdrawn EP1917514A1 (en) 2005-08-23 2006-08-04 Method and assembly for supplying power to an active independent component

Country Status (5)

Country Link
US (1) US20080231250A1 (en)
EP (1) EP1917514A1 (en)
JP (1) JP2009506737A (en)
FR (1) FR2890256B1 (en)
WO (1) WO2007023214A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046202B4 (en) * 2007-09-06 2015-05-13 Micropatent B.V. Thermogenerator assembly and apparatus and method for monitoring a moving component
ITTO20080162A1 (en) * 2008-03-04 2009-09-05 Sequoia It S R L SELF-POWERED BEARING MONITORING SYSTEM
JP2011069402A (en) * 2009-09-24 2011-04-07 Ntn Corp Bearing device with power generation function, and bearing device for vehicle using the same
JP7255367B2 (en) * 2019-06-05 2023-04-11 日本精工株式会社 Linear guide

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677072A (en) * 1970-10-30 1972-07-18 Gen Electric Damage detection method and apparatus for machine elements utilizing vibrations therefrom
US4237454A (en) * 1979-01-29 1980-12-02 General Electric Company System for monitoring bearings and other rotating equipment
DE69320297T2 (en) * 1992-10-19 1998-12-17 Skf Ab Method and device for measuring operating conditions in a warehouse
DE4335776C2 (en) * 1992-10-24 1996-11-28 Klaus Juergen Nord Method for generating electrical energy in the area of moving technical rolling elements and device therefor
DE19522543A1 (en) * 1994-08-01 1996-02-08 Ntn Toyo Bearing Co Ltd Piezoelectric measuring sensor system for roller bearings
GB2326275A (en) * 1997-06-10 1998-12-16 Daewoo Electronics Co Ltd Piezoelectric battery charger using wafer-array of piezoelectric elements attached to a source of mechanical vibrations, e.g. a motor vehicle engine
US6259372B1 (en) * 1999-01-22 2001-07-10 Eaton Corporation Self-powered wireless transducer
US7034711B2 (en) * 2001-08-07 2006-04-25 Nsk Ltd. Wireless sensor, rolling bearing with sensor, management apparatus and monitoring system
US7018106B2 (en) * 2001-12-14 2006-03-28 Ntn Corporation Vehicle mounted bearing assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007023214A1 *

Also Published As

Publication number Publication date
FR2890256A1 (en) 2007-03-02
WO2007023214A1 (en) 2007-03-01
US20080231250A1 (en) 2008-09-25
JP2009506737A (en) 2009-02-12
FR2890256B1 (en) 2013-01-18

Similar Documents

Publication Publication Date Title
FR2748105A1 (en) Magnetic sensor for use in automobile shaft, wheel rotational measurements.
EP1111268B1 (en) Hydraulic anti-vibration support and active damping system including the same
WO2007023214A1 (en) Method and assembly for supplying power to an active independent component
FR2874433A1 (en) MAGNETIC SENSOR DEVICE HAVING COMPONENTS MOUNTED ON A MAGNET
EP1886048B1 (en) Sealing device for antifriction bearing comprising identifying means
EP1385710A1 (en) Device for fixing an electronic monitoring device onto a tyre
FR2865041A1 (en) INTEGRATED CIRCUIT FOR MEASURING DISTANCE AND / OR SPEED OF OBJECTS
EP3523986A1 (en) Pressure sensor, in particular a microphone with improved layout
FR2499353A1 (en) DYNAMOMETRIC DEVICE FOR CONTROLLING THE POSITION OF A TOOL TOWED BY AN AGRICULTURAL MACHINE SUCH AS AN AGRICULTURAL TRACTOR
EP1088236B1 (en) Ball bearing with incorporated encoder
WO2005059492A2 (en) Device for measuring the load on a bearing, antifriction bearing comprising a load-measuring device and a rotating drum machine
EP3227172A1 (en) Connected pedal
WO2001055730A1 (en) Instrumented antifriction bearing device with temporary angular pre-indexing of the encoder relative to the sensor
FR2834371A1 (en) DEVICE FOR TRANSMITTING AND / OR RECEIVING DATA, PARTICULARLY DATA RELATING TO TIRES OF A VEHICLE
FR2833663A1 (en) Bearing for vehicle road wheels, comprises fixed and rotating rings, coder and carrier, measuring unit and carrier and radio transmitter included in measuring unit and able to send data to receiver
WO2013026986A1 (en) Communication method for the purpose of configuration and/or interrogation, and system using same
FR2868242A1 (en) CONTROLLED COMPONENT HAVING AN ELECTRICAL CONNECTION
WO2018219683A1 (en) Integral deformation sensor and method for measuring the deformation of a surface of a solid
EP0859222B1 (en) Device for measuring the rotation of a rotating object
WO2009115698A1 (en) Instrumented bearing, assembly for such bearing, and related mounting method
FR2686975A1 (en) DEVICE FOR MEASURING THE ROTATION TORQUE TRANSMITTED BY A FRICTION CLUTCH.
FR3076609A1 (en) Angular sensor
US20220357238A1 (en) Energy harvesting sensors and methods
FR2766299A3 (en) Detector assembly method
FR3047718B1 (en) WHEEL OF VEHICLE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080222

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140301