EP0205779B1 - Capteur de mesure basé sur la position d'au moins un élément tournant mécanique - Google Patents

Capteur de mesure basé sur la position d'au moins un élément tournant mécanique Download PDF

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Publication number
EP0205779B1
EP0205779B1 EP86104447A EP86104447A EP0205779B1 EP 0205779 B1 EP0205779 B1 EP 0205779B1 EP 86104447 A EP86104447 A EP 86104447A EP 86104447 A EP86104447 A EP 86104447A EP 0205779 B1 EP0205779 B1 EP 0205779B1
Authority
EP
European Patent Office
Prior art keywords
transducers
transducer
revolving
control device
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86104447A
Other languages
German (de)
English (en)
Other versions
EP0205779A3 (en
EP0205779A2 (fr
Inventor
Vittorio Ponzio
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.)
Fabbriche Riunite Misuratori Sacofgas SpA
Original Assignee
Fabbriche Riunite Misuratori Sacofgas SpA
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 Fabbriche Riunite Misuratori Sacofgas SpA filed Critical Fabbriche Riunite Misuratori Sacofgas SpA
Publication of EP0205779A2 publication Critical patent/EP0205779A2/fr
Publication of EP0205779A3 publication Critical patent/EP0205779A3/en
Application granted granted Critical
Publication of EP0205779B1 publication Critical patent/EP0205779B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M3/00—Counters with additional facilities
    • G06M3/06—Counters with additional facilities for printing or separately displaying result of count

Definitions

  • the present invention refers to a measuring transducer based on the positioning of at least one revolving element.
  • the device can be of great advantage when applied in the measuring of angles, angular displacements, number of rotations and various indications of a mechanical measuring meter for fluid, gas or electric measurements.
  • the measuring of the number of rotations done by a meter is based chiefly on visual detection.
  • a meter is made up of a group of inter-acting revolving elements, controlled by an operating gear the movement of which is associated to the quantity of fluid or gas passing in a given duct, so to have a correlation between the fluid or gas quantity passing through and the number of rotations, or fractions of rotations done by the revolving elements of the meter.
  • Each revolving element is divided into a predetermined number of zones, each bearing a number.
  • the revolving elements are mated in such a way that as soon as one terminates a complete turn, it causes the rotation at a predetermined angle of the adjoining one.
  • a jig placed in a predetermined position allows the visualization of a constant portion of the revolving elements and the visual indication of the numbers or fractions of rotations done by a group of elements.
  • no internal transducer is foreseen for the detection of the number of rotations and their transduction in a suitable electric signal, so as to have a record of the fluid or gas consumption on a memory for subsequent elaborations.
  • US-A-4 142 096 discloses a meter for measuring consumption of water, gas or electricity, which can transmit the stored information in digitized form.
  • Aim of the present invention is thus to carry out a device allowing for the transduction of the measurement pertaining to the number of rotations detected by a meter, into an electrical quantity able to be suitably treated, so as to have the most accurate detection, while still permitting a reliable functioning of the mechanical group and foreseeing a transducer intimately connected to the meter already known.
  • a meter 10 placed inside a container 9 which is made up of a set of revolving elements 11a, 11b ... 11h suitably mated.
  • the revolving elements 11 are mated one to the other by means of gears 21a, 21b, etc. so that at each rotation of the revolving element 11a a partial rotation is caused in the adjoining element 11b, and so on.
  • the mating with the gears 21a, 21b ... 21h is not shown in detail as it is well known.
  • a second transducer formed by a disc 14 used as a first transducer, having openings 25, is associated coupled by means of gears.
  • a disc 14 is shown in detail in Fig. 3.
  • each disc 14 and the corresponding revolving element 11 takes place by means of gears.
  • Fig. 2 shows an exemplary mating between the revolving element 11c attached to a pinion 13c which engages in the gear 15c, the latter rotating integral to the disc-transducer 14c.
  • each codifying disc provided with openings, placed according to a predetermined binary code, a detector is provided, for instance photo-sensors 16, which are to detect the disposition of the openings in the disc section passing in front of them.
  • Each detecting element 16 of the codifying disc 14 sends the signal to a suitable control device 18. Also the position of each revolving element 11 is signalled to the control device 18.
  • the control device 18 is in turn connected for instance to a display 20 or to a suitable interface for the dispatching of the detected signal to a suitable centralized device (Fig. 4).
  • the second transducer 14 formed by a disc provided with openings 25 is a tranducer, or "coder" of the absolute type working as a dividing "vernier" of the traditional devices. This in the aim to be able to detect the small displacements and to obtain a maximum positioning accuracy of the measuring unit.
  • the mating between the two tranducers 11 and 14 is made in a particular way in the aim to simultaneously obtain the synchronism in the measuring of the passing instant between the data supplied by the faster transducer and the more roughly measuring one.
  • the two transducers are angularly offset so that the "vernier” transducer is delayed in respect to the corresponding signal of the other transducer.
  • the "vernier" transducer must reach the zero delayed of an interval comprised between 1/5 and 1/10 of a division.
  • the control circuit 18 of the signal suitably synchronizes among them the signals detected by the two transducers and does not change for instance the signal sent to a display 20 or to a subsequent signal-control device before the other transducer as well has reached the commuting point. In this way the real value remains within the fixed tolerance.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Measuring Volume Flow (AREA)

Claims (4)

  1. Dispositif transducteur dans un compteur susceptible de mésurer la consommation de fluid, par example d'eau ou de gaz, ou d'électricité, à travers le mésurage de la position angulaire des éléments mécaniques pivotables comprenant:
    - des premières transducteurs formés par des éléments pivotables (11a ... 11h) qui sont accouplés d'entre eux de telle façon que lorsq'un élément pivotable complète une rotation, il provoque une rotation incrémentielle du successif,
    - des seconds transducteurs pivotables (14a ... 14h) chaque transducteur étant accouplé mécaniquement à un correspondant premier transducteur et comprenant des disques codeurs du type absolu,
    - un détecteur (16) apte à détecter la position angulaire des seconds transducteurs (14a ... 14h) et apte à envoyer des signaux à un dispositif de contrôle (18) connecté à un écran (20) ou à une interface pour la transmission à distance des signaux, caractérisé en ce que
    - les disques codeurs comprennent un nombre multiple d'ouvertures (25) disposées selon un code prédeterminé et selon un limit désiré de précision, de façon que lorsqu'ils sont en mouvement, ils font fonction de "verniers",
    - l'accouplement entre les premiers et les seconds transducteurs est tel que l'indication "type vernier" du second transducteur (14a ... 14h) est retardée par rapport à l'indication du premier (11a ... 11h), - ledit détecteur comprend une pluralité de détecteurs individuels (16a ... 16h) un par chacun des seconds transducteurs,
    - des autres détecteurs (111a ... 111h) sont prévus pour détecter les positions angulaires des premiers transducteurs (11a ... 11h) et pour envoyer leurs signaux au dispositif de contrôle (18).
  2. Dispositif de transduction selon la revendication 1, caractérisé en ce que ledit rétard est 1/5 à 1/10 de l'interval entre les divisions des premiers transducteurs.
  3. Dispositif de transduction selon la revendication 1, caractérisé en ce que le dispositif de contrôle (18) comporte un dispositif de synchronisation des signaux détectés par les détecteurs associés aux premiers et seconds transducteurs.
  4. Dispositif de transduction selon la revendication 3, caractérisé en ce que le dispositif de synchronisation prevoit un circuit de coïncidence et d'interpretation pour le contrôle moyennant l'addition ou la detraction des données fournis par les détecteurs associés aux premiers et seconds transducteurs de manière à fournir en sortant la mésure atteinte dans le domaine des tolérances requises.
EP86104447A 1985-04-02 1986-04-01 Capteur de mesure basé sur la position d'au moins un élément tournant mécanique Expired - Lifetime EP0205779B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20195/85A IT1183556B (it) 1985-04-02 1985-04-02 Dispositivo di trasduzione di misure in base al posizionamento di almeno un elemento girevole meccanico
IT2019585 1985-04-02

Publications (3)

Publication Number Publication Date
EP0205779A2 EP0205779A2 (fr) 1986-12-30
EP0205779A3 EP0205779A3 (en) 1988-06-29
EP0205779B1 true EP0205779B1 (fr) 1991-06-12

Family

ID=11164617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104447A Expired - Lifetime EP0205779B1 (fr) 1985-04-02 1986-04-01 Capteur de mesure basé sur la position d'au moins un élément tournant mécanique

Country Status (4)

Country Link
EP (1) EP0205779B1 (fr)
DE (1) DE3679720D1 (fr)
ES (1) ES293322Y (fr)
IT (1) IT1183556B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1215727B (it) * 1988-01-18 1990-02-22 Sacofgas Spa Dispositivo trasduttore perfezionato.
GB8812760D0 (en) * 1988-05-28 1988-06-29 Smith Meters Ltd Counter
ZA892671B (en) * 1989-02-28 1989-12-27 City Communications Ltd Meters
DE19920393B4 (de) * 1999-05-04 2009-09-24 Elster Gmbh Anordnung zum Bestimmen eines Volumens eines Gasstroms

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1415773A (fr) * 1963-10-11 1965-10-29 Litton Industries Inc Vernier optique pour convertisseurs analogiques-numériques
US3566827A (en) * 1968-02-19 1971-03-02 Servo Products Co Position indicator for machine tools
US4142096A (en) * 1977-11-11 1979-02-27 Lehnert Daryl A Events accumulator device and method

Also Published As

Publication number Publication date
EP0205779A3 (en) 1988-06-29
EP0205779A2 (fr) 1986-12-30
ES293322Y (es) 1987-05-01
IT8520195A0 (it) 1985-04-02
DE3679720D1 (de) 1991-07-18
IT1183556B (it) 1987-10-22
ES293322U (es) 1986-08-16

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