WO2013121378A1 - Modular diagnostic device integratable with a pneumatic or electropneumatic distributor - Google Patents

Modular diagnostic device integratable with a pneumatic or electropneumatic distributor Download PDF

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Publication number
WO2013121378A1
WO2013121378A1 PCT/IB2013/051220 IB2013051220W WO2013121378A1 WO 2013121378 A1 WO2013121378 A1 WO 2013121378A1 IB 2013051220 W IB2013051220 W IB 2013051220W WO 2013121378 A1 WO2013121378 A1 WO 2013121378A1
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WIPO (PCT)
Prior art keywords
diagnostic device
intermediate base
pneumatic
distributor
sensor
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PCT/IB2013/051220
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French (fr)
Inventor
Patrick Bunel
Jacques Libet
Daniel Hubert
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Asco Joucomatic Sa
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Application filed by Asco Joucomatic Sa filed Critical Asco Joucomatic Sa
Publication of WO2013121378A1 publication Critical patent/WO2013121378A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F15B19/005—Fault detection or monitoring

Definitions

  • the present invention relates to a diagnostic device that can be used in combination with one or more pneumatic or electropneumatic distributors.
  • the power of the compressed air for the cylinders and motors must be checked.
  • the distributor located between the pneumatic energy source and the actuator performs this function.
  • This pre-actuator is associated with a cylinder, its size and type are functions of this cylinder.
  • a manifold with only one pressure port, a service port and an exhaust port will be used with a single acting cylinder (Fig. 1).
  • a manifold with a pressure port, two exhaust ports and two service ports, alternating pressure and exhaust conditions, will drive a double acting cylinder (Fig. 2).
  • the patent DE 10 2008 05 9594 addresses the concept of additional measurement module that determines the position of the distributor, always by optical means, so as to ensure the upgrading of existing facilities.
  • the present invention aims in particular to provide a reliable diagnostic device does not require complete replacement of distributors already installed during installation.
  • a diagnostic device is characterized in that it comprises an intermediate base capable of being inserted between a pneumatic or electropneumatic distributor and a base ensuring the distribution of the air flows towards the distributor, said intermediate base comprising at least means for detecting the pressure and / or flow rate passing through the intermediate base.
  • the intermediate base comprises fixing means to the base, said fixing means being accessible from an upper face of the intermediate base, the pneumatic distributor being fixed on said upper face.
  • the detection means may be a pressure and / or flow sensor.
  • the sensor can be integrated or external to the intermediate base.
  • the senor delivers at least one continuous or digital measurement signal set to an on or off threshold.
  • the device may include a transducer module for developing a redundant diagnostic line and / or signaling.
  • the device may be associated with another similar diagnostic device to form a common feed and / or exhaust distribution assembly.
  • the invention also relates to a method for determining the failure of a pneumatic distributor in a dispensing assembly by analyzing a signal from a sensor included in a diagnostic device according to any one of the preceding claims.
  • Fig. 1 is a diagram illustrating the power supply of a single-acting cylinder.
  • Fig. 2 is a diagram illustrating the supply of a double-acting cylinder.
  • Fig. 3 is a schematic perspective view illustrating a device according to the invention set up between a base and a distributor.
  • Fig. 4 is a schematic view similar to FIG. 3, a transponder box being added.
  • Fig. 6 is a side elevational view of the sensor of FIG. 5.
  • Fig. 7 is a view similar to FIG. 3, the dispenser being disassembled.
  • Fig. 8 is a schematic perspective view illustrating, on the one hand, the realization of external sensor functions, and, on the other hand, the realization of redundant security functions through a transponder box associated with the distributors.
  • Fig. 9 is a pneumatic diagram illustrating the individual pressure monitoring
  • Fig. 10 is an electrical diagram illustrating a variant of the individual pressure monitoring.
  • the diagnostic device consists of an intermediate base 1 between the pneumatic distributor P (or electropneumatic) and the juxtaposable E base (or simple) and which ensures the normal distribution of the air flow connections (FIG 3).
  • This intermediate base may comprise one or two sensors C connected to the orifices (2 and / or 4). It should be noted that these sensors C may be external sensors C1 commercially available analog or digital output signals "all or nothing". the sensors C can also be advantageously integrated (C2) internally to the intermediate base in the form of continuous measuring cells or all or nothing devices.
  • the pneumatic power has the components of the pressure and the flow rate. Consequently, the sensors C1 or the measurement cells C2 used in the present invention can be sensitive to the pressure and / or the flow rate.
  • Fig. 4 illustrates a typical embodiment of the pressure detection function by external sensors C1 commercially, to which can be added a relay box and external connection to a controller programmable, this system can then be qualified as an integrated safety transponder T and will be described later.
  • This type of embodiment has the advantage of making easier the maintenance of the system, but increases the size. To avoid this disadvantage, the sensors C can be integrated in the intermediate base.
  • Fig. 5 illustrates examples of alternative embodiments of the pneumatic power detection function C2 by internal sensors (flow or pressure). These sensors integrated in the intermediate base are connected directly to either a connector or to the transponder box T.
  • this intermediate base is simply by disassembly of the existing distributor, unscrewing from above the fixing screws, then placing these screws in the lower housing in the upper housing of the intermediate base.
  • the attachment of the intermediate base is then effected by clamping from above and through the captive nuts or threads of the four lower screws, thus making the juxtaposable (or simple) and intermediate bases (Fig. 7) integral.
  • FIG. 9 shows how is elaborated the individual pressure monitoring (or flow) on the orifices (4) or (2) of each of the distributors (sensors S2 n i) the signals of each of these sensors can be transmitted on an industrial programmable logic controller, and is the first diagnostic line of a security line.
  • the safety function is performed by comparing the time diagrams of the distributor switching orders with respect to the time diagrams of the measured pressures or flow rate.
  • the distributor deficient is naturally identified by the lack of coherence between the given tilting order and the non-return of the change of pressure level or flow rate on the channel or channels considered.
  • the electrical diagram of FIG. 10 illustrates an alternative solution for the realization of redundant security functions through a transponder box T associated with the distributors.
  • the individual monitoring of pressure (or flow) is always carried out on the orifices (4) or (2) of each of the distributors (sensors S2 n i) the state of each of these sensors allows the supply of the relay coil Ka , specific to each distributor.
  • Each of these relays controlling several contacts, one connected to the input of a PLC, the others connected to another safety loop or signaling accessories such as alarm, LED.
  • the deficient distributor is naturally identified by the lack of coherence between the given switching order and the non-return of the Ka relay state change, this is still the first safety loop.
  • the present invention provides an original solution because the modular and integrable device directly verifies the presence or absence of the pneumatic power on the use ports without the need to control the position of the drawer unlike existing solutions.
  • the pneumatic power whose components are the pressure and the flow, is also a physical quantity of reliable verification of the proper operation of the cylinder associated with its distributor.
  • a second aspect of the originality of the invention lies in the fact that a clever arrangement of these modular and integrable devices makes it possible to build machine control systems assigned to the realization of redundant safety functions. by limiting the number of pressure sensors. The probability of dangerous failure of the security functions is thus severely limited.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A diagnostic device comprising an intermediate base (1) capable of being inserted between a pneumatic or electropneumatic distributor (P) and a base (E) ensuring the distribution of the flows of air to the distributor (P), said intermediate base (E) comprising at least one means (C) for detecting the pressure and/or the flow rate passing through the intermediate base (E).

Description

DISPOSITIF DE DIAGNOSTIC MODULAIRE INTEGRABLE A UN DISTRIBUTEUR PNEUMATIQUE OU ELECTROPNEUMATIQUE  MODULAR DIAGNOSTIC DEVICE INTEGRATED WITH A PNEUMATIC OR ELECTRO-PNEUMATIC DISTRIBUTOR
La présente invention est relative à un dispositif de diagnostic utilisable en combinaison avec un ou plusieurs distributeur pneumatique ou électropneumatique. The present invention relates to a diagnostic device that can be used in combination with one or more pneumatic or electropneumatic distributors.
La puissance de l'air comprimé destiné aux vérins et moteurs doit être contrôlée. Le distributeur situé entre la source d'énergie pneumatique et l'actionneur remplit cette fonction. Ce pré actionneur est associé à un vérin, sa taille et son type sont fonctions de ce vérin.  The power of the compressed air for the cylinders and motors must be checked. The distributor located between the pneumatic energy source and the actuator performs this function. This pre-actuator is associated with a cylinder, its size and type are functions of this cylinder.
Un distributeur ne comportant qu'un orifice de pression, un orifice d'utilisation et un orifice d'échappement sera utilisé avec un vérin simple effet (Fig. 1 ). Un distributeur qui comporte un orifice de pression, deux orifices d'échappement et deux orifices d'utilisation, sur lesquels on alternera les états de pression et d'échappement pilotera un vérin double effet (Fig. 2).  A manifold with only one pressure port, a service port and an exhaust port will be used with a single acting cylinder (Fig. 1). A manifold with a pressure port, two exhaust ports and two service ports, alternating pressure and exhaust conditions, will drive a double acting cylinder (Fig. 2).
Afin d'augmenter la sûreté de fonctionnement des automatismes pneumatiques et électropneumatiques et par conséquent mieux assurer la sécurité des machines, c'est-à-dire la prise en compte de la sécurité des personnes et des biens sur défaillances des systèmes. On se propose de détecter la non prise en compte d'un signal de commande de commutation de distributeurs électropneumatiques ou pneumatiques par la détection et surveillance de la pression sur le ou les orifices (2 et/ou 4) de liaisons avec le vérin. In order to increase the operational safety of pneumatic and electropneumatic automation and therefore to better ensure the safety of the machines, that is to say the consideration of the safety of people and property on system failures. It is proposed to detect the failure to take into account a control signal for switching electropneumatic or pneumatic distributors by detecting and monitoring the pressure on the orifices (2 and / or 4) of connections with the cylinder.
Les brevets DE 201 1 6202, EP 1 186 814 et EP 0 844 425 décrivent des équipements additionnels aux distributeurs pneumatiques ou électropneumatiques traditionnels et tendant à vérifier la position du tiroir du distributeur soit par des moyens optiques, soit par des moyens magnétiques. Ces solutions conservent, certes, une compacité dimensionnelle mais entraînent une modification in situ des distributeurs déjà installés, exigeant un remplacement complet de ceux-ci sur les installations existantes.  Patents DE 201 1 6202, EP 1 186 814 and EP 0 844 425 describe additional equipment to conventional pneumatic or electropneumatic distributors and tending to check the position of the valve spool either by optical means or by magnetic means. These solutions retain, certainly, a dimensional compactness but lead to an in situ modification of the already installed distributors, requiring a complete replacement of these on the existing installations.
Le brevet DE 10 2008 05 9594 aborde la notion de module additionnel de mesure qui permet de déterminer la position du distributeur, toujours par des moyens optiques, de façon à assurer la mise à niveau des installations existantes. La présente invention a pour but notamment de fournir un dispositif de diagnostic fiable n'exigeant pas le remplacement complet des distributeurs déjà installés lors de son installation. The patent DE 10 2008 05 9594 addresses the concept of additional measurement module that determines the position of the distributor, always by optical means, so as to ensure the upgrading of existing facilities. The present invention aims in particular to provide a reliable diagnostic device does not require complete replacement of distributors already installed during installation.
Selon l'invention un dispositif de diagnostic est caractérisé en ce qu'il comprend une embase intermédiaire apte à être insérée entre un distributeur pneumatique ou électropneumatique et une embase assurant la distribution des flux d'air vers le distributeur, ladite embase intermédiaire comprenant au moins un moyen de détection de la pression et/ou du débit traversant l'embase intermédiaire.  According to the invention, a diagnostic device is characterized in that it comprises an intermediate base capable of being inserted between a pneumatic or electropneumatic distributor and a base ensuring the distribution of the air flows towards the distributor, said intermediate base comprising at least means for detecting the pressure and / or flow rate passing through the intermediate base.
Avantageusement l'embase intermédiaire comprend des moyens de fixation à l'embase, lesdits moyens de fixation étant accessibles depuis une face supérieure de l'embase intermédiaire, le distributeur pneumatique étant fixé sur ladite face supérieure.  Advantageously, the intermediate base comprises fixing means to the base, said fixing means being accessible from an upper face of the intermediate base, the pneumatic distributor being fixed on said upper face.
Le moyen de détection peut être un capteur de pression et/ou de débit. Le capteur peut être intégré ou externe à l'embase intermédiaire.  The detection means may be a pressure and / or flow sensor. The sensor can be integrated or external to the intermediate base.
De manière avantageuse le capteur délivre au moins un signal de mesure continu ou digital réglé sur un seuil d'enclenchement ou de déclenchement.  Advantageously, the sensor delivers at least one continuous or digital measurement signal set to an on or off threshold.
Le dispositif peut comprendre un module transducteur permettant l'élaboration d'une ligne de diagnostic redondante et/ou d'une signalisation.  The device may include a transducer module for developing a redundant diagnostic line and / or signaling.
Le dispositif peut être associé avec un autre dispositif de diagnostic similaire pour constituer un ensemble de distribution à alimentation et/ou échappement communs.  The device may be associated with another similar diagnostic device to form a common feed and / or exhaust distribution assembly.
L'invention concerne également un procédé de détermination de la défaillance d'un distributeur pneumatique dans un ensemble de distribution par l'analyse d'un signal issu d'un capteur compris dans un dispositif de diagnostic suivant l'une quelconque des revendications précédentes.  The invention also relates to a method for determining the failure of a pneumatic distributor in a dispensing assembly by analyzing a signal from a sensor included in a diagnostic device according to any one of the preceding claims.
D'autres caractéristiques et avantages de l'invention apparaîtront dans la description qui suit d'un mode de réalisation préféré avec référence aux dessins annexés mais qui n'a aucun caractère limitatif. Sur ces dessins :  Other features and advantages of the invention will appear in the following description of a preferred embodiment with reference to the accompanying drawings but which has no limiting character. On these drawings:
Fig. 1 est un schéma illustrant l'alimentation d'un vérin simple effet.  Fig. 1 is a diagram illustrating the power supply of a single-acting cylinder.
Fig. 2 est un schéma illustrant l'alimentation d'un vérin double effet. Fig. 3 est une vue schématique en perspective illustrant un dispositif selon l'invention mis en place entre une embase et un distributeur. Fig. 2 is a diagram illustrating the supply of a double-acting cylinder. Fig. 3 is a schematic perspective view illustrating a device according to the invention set up between a base and a distributor.
Fig. 4 est une vue schématique similaire à Fig. 3, un boîtier transpondeur étant ajouté.  Fig. 4 is a schematic view similar to FIG. 3, a transponder box being added.
Fig. 5 est une vue schématique en perspective d'un capteur interne selon l'invention.  Fig. 5 is a schematic perspective view of an internal sensor according to the invention.
Fig. 6 est une vue en élévation latérale du capteur de Fig. 5.  Fig. 6 is a side elevational view of the sensor of FIG. 5.
Fig. 7 est une vue similaire à Fig. 3, le distributeur étant démonté.  Fig. 7 is a view similar to FIG. 3, the dispenser being disassembled.
Fig. 8 est une vue schématique en perspective illustrant d'une part la réalisation de fonctions capteurs externe, et d'autre part la réalisation de fonctions redondantes de sécurité au travers un boîtier transpondeur associé aux distributeurs  Fig. 8 is a schematic perspective view illustrating, on the one hand, the realization of external sensor functions, and, on the other hand, the realization of redundant security functions through a transponder box associated with the distributors.
Fig. 9 est un schéma pneumatique illustrant la surveillance individuelle de pression, et  Fig. 9 is a pneumatic diagram illustrating the individual pressure monitoring, and
Fig. 10 est un schéma électrique illustrant une variante de la surveillance individuelle de pression.  Fig. 10 is an electrical diagram illustrating a variant of the individual pressure monitoring.
Le dispositif de diagnostic consiste en une embase intermédiaire 1 entre le distributeur pneumatique P (ou électropneumatique) et l'embase E juxtaposable (ou simple) et qui assure les liaisons normales de distribution des flux d'air (Fig. 3). Cette embase intermédiaire peut comprendre un ou deux capteurs C connectés aux orifices (2 et/ou 4). Il est à noter que ces capteurs C peuvent être des capteurs extérieurs C1 disponibles dans le commerce à signaux de sortie analogiques ou digitaux « tout ou rien ». les capteurs C peuvent être également avantageusement intégrés (C2) de façon interne à l'embase intermédiaire sous forme de cellules de mesure continu ou de dispositif tout ou rien. On rappelle ici que la puissance pneumatique a pour composantes la pression et le débit en conséquence les capteurs C1 ou les cellules de mesures C2 utilisés dans la présente invention peuvent être sensible à la pression ou/et au débit. The diagnostic device consists of an intermediate base 1 between the pneumatic distributor P (or electropneumatic) and the juxtaposable E base (or simple) and which ensures the normal distribution of the air flow connections (FIG 3). This intermediate base may comprise one or two sensors C connected to the orifices (2 and / or 4). It should be noted that these sensors C may be external sensors C1 commercially available analog or digital output signals "all or nothing". the sensors C can also be advantageously integrated (C2) internally to the intermediate base in the form of continuous measuring cells or all or nothing devices. It will be recalled here that the pneumatic power has the components of the pressure and the flow rate. Consequently, the sensors C1 or the measurement cells C2 used in the present invention can be sensitive to the pressure and / or the flow rate.
Fig. 4 illustre un exemple typique de réalisation de la fonction détection de pression par capteurs externes C1 disponibles dans le commerce, auxquels peut s'adjoindre un boîtier relais et de connexion externe vers un automate programmable, ce système peut alors être qualifié de transpondeur T de sécurité intégré et sera décrit ultérieurement. Ce type de réalisation a pour avantage de rendre plus aisé la maintenance du système, mais augmente l'encombrement. Pour éviter cet inconvénient les capteurs C pourront être intégrés dans l'embase intermédiaire. Fig. 4 illustrates a typical embodiment of the pressure detection function by external sensors C1 commercially, to which can be added a relay box and external connection to a controller programmable, this system can then be qualified as an integrated safety transponder T and will be described later. This type of embodiment has the advantage of making easier the maintenance of the system, but increases the size. To avoid this disadvantage, the sensors C can be integrated in the intermediate base.
Fig. 5 illustre des exemples de réalisations alternatives de la fonction détection de puissance pneumatique C2 par capteurs internes (débit ou pression). Ces capteurs intégrés dans l'embase intermédiaire sont reliés directement soit à un connecteur, soit au boîtier transpondeur T.  Fig. 5 illustrates examples of alternative embodiments of the pneumatic power detection function C2 by internal sensors (flow or pressure). These sensors integrated in the intermediate base are connected directly to either a connector or to the transponder box T.
L'intégration des cette embase intermédiaire se fait simplement par démontage du distributeur existant, dévissage par le dessus des vis de fixation, puis mise en place de ces vis dans les logements inférieurs dans les logements supérieurs de l'embase intermédiaire. La fixation de l'embase intermédiaire s'effectue alors par le serrage par le dessus et au travers des écrous prisonniers ou des taraudages des quatre vis inférieures, rendant ainsi solidaire les embases juxtaposables (ou simples) et intermédiaires (Fig. 7). Puis par le serrage par le dessus des vis du distributeur avec les écrous prisonniers (ou taraudage), rendant solidaire distributeur et embase intermédiaire. Du fait de la seule accessibilité nécessaire et suffisante « par le dessus » cette opération peut s'effectuer entre deux distributeurs collatéraux sans démontage de ceux ci. The integration of this intermediate base is simply by disassembly of the existing distributor, unscrewing from above the fixing screws, then placing these screws in the lower housing in the upper housing of the intermediate base. The attachment of the intermediate base is then effected by clamping from above and through the captive nuts or threads of the four lower screws, thus making the juxtaposable (or simple) and intermediate bases (Fig. 7) integral. Then by tightening from above the distributor screws with the captive nuts (or tapping), making solidarity dispenser and intermediate base. Due to the only necessary and sufficient accessibility "from above" this operation can be performed between two collateral distributors without disassembly thereof.
On considère un exemple d'un ensemble de distribution de quatre distributeurs sur embases juxtaposables, pilotant deux vérins double effet et deux vérins simple effet. Mais cet exemple est non limitative et peut être reconduit pour 'n' distributeurs et 'n' vérins quelque soit leurs types respectifs. L'arrangement géométrique du dispositif est illustré Fig. 8, le schéma pneumatique et électrique de l'ensemble par Fig. 9 et Fig. 10. Le schéma pneumatique de Fig. 9 montre comment est élaborée la surveillance individuelle de pression (ou débit) sur les orifices (4) ou (2) de chacun des distributeurs (capteurs S2ni) les signaux de chacun de ces capteurs peuvent être transmis sur un automate programmable industriel, et constitue la première ligne de diagnostic d'une ligne de sécurité. Dans ce premier cas de réalisation la fonction de sécurité est réalisée par comparaison des diagrammes temporels des ordres de basculement des distributeurs par rapport aux diagrammes temporels des pressions, ou débit mesurées. Le distributeur déficient est identifié naturellement par l'absence de cohérence entre l'ordre de basculement donné et le non retour du changement de niveau de pression ou de débit sur la ou les voies considérées. Le schéma électrique de Fig. 10 illustre une solution alternative permettant la réalisation de fonctions redondantes de sécurité au travers un boîtier transpondeur T associé aux distributeurs. La surveillance individuelle de pression (ou débit) est toujours réalisée sur les orifices (4) ou (2) de chacun des distributeurs (capteurs S2ni) l'état de chacun de ces capteurs permet l'alimentation de la bobine de relais Ka, propre à chaque distributeur. Chacun de ces relais commandant plusieurs contacts, l'un relié à l'entrée d'un automate programmable, les autres reliés à une autre boucle de sécurité ou a des accessoires de signalisation tel que alarme, voyant. Le distributeur déficient est identifié naturellement par l'absence de cohérence entre l'ordre de basculement donné et le non retour du changement d'état du relais Ka,, ceci constitue toujours la première boucle de sécurité. An example of a dispensing assembly of four distributors on juxtaposable bases, controlling two double-acting cylinders and two single-acting cylinders is considered. But this example is non-limiting and can be renewed for 'n' distributors and 'n' jacks regardless of their respective types. The geometric arrangement of the device is illustrated in FIG. 8, the pneumatic and electrical diagram of the assembly by FIG. 9 and FIG. 10. The pneumatic diagram of FIG. 9 shows how is elaborated the individual pressure monitoring (or flow) on the orifices (4) or (2) of each of the distributors (sensors S2 n i) the signals of each of these sensors can be transmitted on an industrial programmable logic controller, and is the first diagnostic line of a security line. In this first embodiment, the safety function is performed by comparing the time diagrams of the distributor switching orders with respect to the time diagrams of the measured pressures or flow rate. The distributor deficient is naturally identified by the lack of coherence between the given tilting order and the non-return of the change of pressure level or flow rate on the channel or channels considered. The electrical diagram of FIG. 10 illustrates an alternative solution for the realization of redundant security functions through a transponder box T associated with the distributors. The individual monitoring of pressure (or flow) is always carried out on the orifices (4) or (2) of each of the distributors (sensors S2 n i) the state of each of these sensors allows the supply of the relay coil Ka , specific to each distributor. Each of these relays controlling several contacts, one connected to the input of a PLC, the others connected to another safety loop or signaling accessories such as alarm, LED. The deficient distributor is naturally identified by the lack of coherence between the given switching order and the non-return of the Ka relay state change, this is still the first safety loop.
La présente invention propose une solution originale car le dispositif modulaire et intégrable vérifie directement la présence ou non de la puissance pneumatique sur les orifices d'utilisation sans qu'il soit nécessaire de contrôler la position du tiroir contrairement aux solutions existantes. The present invention provides an original solution because the modular and integrable device directly verifies the presence or absence of the pneumatic power on the use ports without the need to control the position of the drawer unlike existing solutions.
La puissance pneumatique, dont les composantes sont la pression et le débit, est par ailleurs une grandeur physique de vérification sûre du bon fonctionnement du vérin associé à son distributeur.  The pneumatic power, whose components are the pressure and the flow, is also a physical quantity of reliable verification of the proper operation of the cylinder associated with its distributor.
Un second aspect de l'originalité de l'invention tient d'autre part, en ce qu'une disposition astucieuse de ces dispositifs modulaires et intégrables, permet de construire des systèmes de commande de machines affectées à la réalisation des fonctions de sécurité redondantes toute en limitant le nombre de capteurs de pression. La probabilité de défaillance dangereuse des fonctions de sécurité est de la sorte fortement limitée.  A second aspect of the originality of the invention lies in the fact that a clever arrangement of these modular and integrable devices makes it possible to build machine control systems assigned to the realization of redundant safety functions. by limiting the number of pressure sensors. The probability of dangerous failure of the security functions is thus severely limited.

Claims

REVENDICATIONS
1 - Dispositif de diagnostic caractérisé en ce qu'il comprend une embase intermédiaire apte à être insérée entre un distributeur pneumatique ou électropneumatique et une embase assurant la distribution des flux d'air vers le distributeur, ladite embase intermédiaire comprenant au moins un moyen de détection de la pression et/ou du débit traversant l'embase intermédiaire. 2- Dispositif de diagnostic selon la revendication 1 , caractérisé en ce que l'embase intermédiaire comprend des moyens de fixation à l'embase, lesdits moyens de fixation étant accessibles depuis une face supérieure de l'embase intermédiaire, le distributeur pneumatique étant fixé sur ladite face supérieure. 1 - Diagnostic device characterized in that it comprises an intermediate base adapted to be inserted between a pneumatic or electropneumatic distributor and a base ensuring the distribution of air flows to the distributor, said intermediate base comprising at least one detection means pressure and / or flow through the intermediate base. 2- diagnostic device according to claim 1, characterized in that the intermediate base comprises fastening means to the base, said fastening means being accessible from an upper face of the intermediate base, the pneumatic distributor being fixed on said upper face.
3- Dispositif de diagnostic selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le moyen de détection est un capteur de pression et/ou de débit. 3- diagnostic device according to any one of claims 1 and 2, characterized in that the detection means is a pressure sensor and / or flow.
Dispositif de diagnostic selon la revendication 3, caractérisé en ce que le capteur est intégré à l'embase intermédiaire. Diagnostic device according to claim 3, characterized in that the sensor is integrated with the intermediate base.
5- Dispositif de diagnostic selon la revendication 3, caractérisé en ce que le capteur est externe à l'embase intermédiaire. 5- diagnostic device according to claim 3, characterized in that the sensor is external to the intermediate base.
Dispositif de diagnostic selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le capteur délivre au moins un signal de mesure continu ou digital réglé sur un seuil d'enclenchement ou de déclenchement. Diagnostic device according to any one of claims 3 to 5, characterized in that the sensor delivers at least one continuous or digital measurement signal set to an on / off threshold.
Dispositif de diagnostic selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un module transducteur permettant l'élaboration d'une ligne de diagnostic redondante et/ou d'une signalisation. Dispositif de diagnostic selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est associé avec au moins un autre dispositif de diagnostic selon l'une quelconque des revendications précédentes pour constituer un ensemble de distribution à alimentation et/ou échappement communs. Diagnostic device according to any one of the preceding claims, characterized in that it comprises a transducer module enabling the development of a redundant diagnostic line and / or a signaling. Diagnostic device according to any one of the preceding claims, characterized in that it is associated with at least one other diagnostic device according to any one of the preceding claims to form a common supply and / or exhaust distribution assembly.
Procédé de détermination de la défaillance d'un distributeur pneumatique dans un ensemble de distribution par l'analyse d'un signal issu d'un capteur compris dans un dispositif de diagnostic suivant l'une quelconque des revendications précédentes. A method of determining the failure of a pneumatic distributor in a dispensing assembly by analyzing a signal from a sensor included in a diagnostic device according to any one of the preceding claims.
PCT/IB2013/051220 2012-02-16 2013-02-15 Modular diagnostic device integratable with a pneumatic or electropneumatic distributor WO2013121378A1 (en)

Applications Claiming Priority (2)

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FR1251406 2012-02-16
FR1251406A FR2987087B1 (en) 2012-02-16 2012-02-16 MODULAR DIAGNOSTIC DEVICE INTEGRATED WITH A PNEUMATIC OR ELECTROPNEUMATIC DISPENSER

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011620A1 (en) 1969-03-11 1970-10-08 Sisis Equipment Macclesfield Ltd., Macclesfield, Cheshire (Großbritannien) Device for processing sward
EP0844425A1 (en) 1996-11-19 1998-05-27 ISI Norgren, Inc. Valve spool position detector apparatus
EP1186814A2 (en) 2000-09-12 2002-03-13 Smc Corporation Manifold valve with position detector
US20070000302A1 (en) * 2003-03-19 2007-01-04 Thomas Gramkow Method for testing the function of a hydraulic valve and a test bench for carrying out said method
US20080072657A1 (en) * 2006-09-25 2008-03-27 Herbert David E Method for testing a hydraulic manifold
DE102008059594A1 (en) 2008-11-28 2010-06-02 Festo Ag & Co. Kg Sensor module for determination of position of valve element of valve unit in valve arrangement, has signal generators and signal receivers arranged at base

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011620A1 (en) 1969-03-11 1970-10-08 Sisis Equipment Macclesfield Ltd., Macclesfield, Cheshire (Großbritannien) Device for processing sward
EP0844425A1 (en) 1996-11-19 1998-05-27 ISI Norgren, Inc. Valve spool position detector apparatus
EP1186814A2 (en) 2000-09-12 2002-03-13 Smc Corporation Manifold valve with position detector
US20070000302A1 (en) * 2003-03-19 2007-01-04 Thomas Gramkow Method for testing the function of a hydraulic valve and a test bench for carrying out said method
US20080072657A1 (en) * 2006-09-25 2008-03-27 Herbert David E Method for testing a hydraulic manifold
DE102008059594A1 (en) 2008-11-28 2010-06-02 Festo Ag & Co. Kg Sensor module for determination of position of valve element of valve unit in valve arrangement, has signal generators and signal receivers arranged at base

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FR2987087B1 (en) 2016-01-29
FR2987087A1 (en) 2013-08-23

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