EP3812848A1 - Measuring device for a mechanical watch - Google Patents

Measuring device for a mechanical watch Download PDF

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Publication number
EP3812848A1
EP3812848A1 EP19204404.8A EP19204404A EP3812848A1 EP 3812848 A1 EP3812848 A1 EP 3812848A1 EP 19204404 A EP19204404 A EP 19204404A EP 3812848 A1 EP3812848 A1 EP 3812848A1
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EP
European Patent Office
Prior art keywords
watch
contact
screen
movement
contact piece
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.)
Granted
Application number
EP19204404.8A
Other languages
German (de)
French (fr)
Other versions
EP3812848B1 (en
Inventor
Alexandre Hundzinger
Thierry Scordilis
Yoann Mosteiro Vazquez
José Lehmann
Giuseppe Zamuner
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.)
Swatch Group Research and Development SA
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Swatch Group Research and Development 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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP19204404.8A priority Critical patent/EP3812848B1/en
Priority to JP2020159477A priority patent/JP6982154B2/en
Priority to US17/030,954 priority patent/US11372375B2/en
Priority to CN202011131402.7A priority patent/CN112764341B/en
Publication of EP3812848A1 publication Critical patent/EP3812848A1/en
Application granted granted Critical
Publication of EP3812848B1 publication Critical patent/EP3812848B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
    • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
    • G04D7/1214—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring for complete clockworks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/006—Testing apparatus for complete clockworks with regard to external influences or general good working
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus

Definitions

  • the present invention relates to mechanical watches with manual or automatic winding, and more particularly to devices for testing the mechanical movement of this type of watch.
  • Tests are known to determine the regularity of the rate as well as other characteristic parameters of a mechanical watch movement.
  • the measurements applied consist of optical and / or acoustic measurements of the pulses generated by the mechanical oscillator of the watch movement.
  • Acoustic measurements known to date often use expensive microphones which make this solution uneconomical.
  • the equipment for implementing the optical methods is quite complex and also expensive.
  • the present invention aims to provide a solution to the problems described above. This object is achieved by a device as well as by the methods according to the appended claims.
  • the invention relates to a portable device which makes it possible to measure the values of one or more parameters characterizing the operation of a mechanical watch.
  • the device is provided with a contact microphone comprising a contact piece and for example a piezoelectric element.
  • the device is taken in hand and the contact part is put in physical contact with the case of a watch during a measurement period.
  • the device also includes a power source, such as a replaceable or rechargeable battery, a microprocessor, a memory, and a screen for displaying measured values, preferably a touch screen.
  • the dimensions of the device are of the same order of magnitude as the case of a wristwatch.
  • the device has the shape of a watchmaker's loupe.
  • the invention also relates to a measurement method using the device of the invention. The device is easy to use and allows the wearer to test their own watch.
  • Device 1 shown in figures 1a and 1b has the external shape and dimensions of a watchmaker's loupe, comprising a cylindrical portion 2 and a portion with a conical or curved section 3 which widens from the cylindrical portion 2 towards a section 4 which is wider than the cylindrical section 2.
  • the invention is not limited to this form, since the functionality of the device is very different from that of a watchmaker's loupe.
  • a curved surface 5 is provided at the end of the cylindrical portion 2.
  • Surface 5 serves as a contact surface between the device and the case of a watch to be tested.
  • the curvature of the contact surface 5 and the hardness of the surface material are such that the contact area between the surface 5 and the case is essentially limited to one point, measured relative to the average dimensions of the watch.
  • a digital screen 6, preferably a touch screen, is integrated in section 4, to display the measured data and to receive commands from the user.
  • the contact surface 5 is the outer surface of a round part 10, hereinafter called the contact part.
  • the contact piece 10 is preferably made from a hard metal or a hard synthetic material, for example having a hardness of at least 100 Vickers.
  • the contact piece 10 comprises a cylindrical cavity 11 surrounded by a hollow, cylindrical elevation 12, having a diameter less than the diameter of the contact surface 5.
  • the contact piece 10 is attached. to an internal rim 13 of a cylindrical frame 14, preferably of metal, the cylindrical elevation 12 passing through the opening defined by the rim 13.
  • a washer 15 of compressible material, for example shock-absorbing foam, is mounted between the contact piece 10 and the flange 13.
  • the piece 10, the washer 15 and the flange 13 are joined together, for example by the use of an adhesive foam for the washer 15.
  • the top of the curved surface 5 exceeds the lower plane of the reinforcement 14, by an offset 'a' indicated at figure 3 .
  • a piezoelectric element 20 is fixed to the bottom of the cavity 11 of the contact piece 10, so that the assembly of the piece 10 and the piezoelectric element 20 constitutes a contact microphone.
  • the piezoelectric element 20 is connected by an electric wire 21 to a PCB (printed circuit board) 22 attached to a second internal flange 23 of the frame 14.
  • the PCB 22 is provided with electronic components, configured to process and analyze the data. signals generated by the microphone, and described in more detail later.
  • a plastic battery holder 25 is fixedly inserted into the frame 14, above the PCB 22.
  • the battery holder 25 comprises a housing suitable for receiving a replaceable battery 26, for example a standard battery of the CR1632 type.
  • the device is provided with a rechargeable battery.
  • Conductors (not shown) are integrated in the battery holder 25, to connect the battery 26 to the PCB 22, so as to supply the components of the PCB.
  • the battery holder 25 is provided with a number of openings 27 for the passage of spring pins 28 which will establish a connection between the PCB 22 and the screen. digital 6 of the device.
  • the screen 6 is provided with a connector 30 which will be in contact with the spring pins 28.
  • An outer case 31 in the form of a magnifying glass is mounted around the frame 14, and clipped onto said frame by means of a rib 32 on the outer surface of the frame 14.
  • the rib 32 enters a recess 33 at the bottom. interior of the outer casing 31 when the latter is put around the frame 14 and pushed downwards.
  • the outer housing 31 is made from a synthetic material, for example silicone, which allows enough deformation to achieve the clip connection. Instead of this type of connection, other means for reversibly attaching the housing 31 to the frame 14 are possible within the scope of the invention.
  • the upper section of the housing 31 comprises a protective glass 34 for the screen 6, making it possible to communicate the commands of the user in the case of a touch screen. On the other side, the housing 31 comes into contact with an outer rim 35 of the frame 14.
  • a user takes the device in hand and positions it with the contact surface 5 in physical contact with a watch case in reassembled state, by pressing lightly on the device.
  • the offset 'a' allows this pressure to compress the resilient washer 15, so as to ensure an adequate contact force between the device 1 and the watch case.
  • the device is held in this position using a fixing system for a measurement period of around ten seconds, for example.
  • the user can activate the device via the touch screen 6 or the device can be configured to be activated automatically as soon as it is positioned and pressed against a surface of the watch. A measurement period is then triggered during which the microphone measures the acoustic noises generated by the mechanical movement of the watch.
  • these noises consist of an alternating sequence of two types of pulses of different character, often called 'tic' and 'tac'.
  • the analysis of the pulses allows the calculation of parameters related to the operation of the movement, such as the operating state and the mark.
  • These analyzes and calculations are carried out by the components mounted on the PCB. Several configurations of these components are possible within the framework of the invention. An example of a configuration is shown in figure 4 .
  • the signal generated by the piezoelectric element 20 passes through an amplification stage 40 to a processing unit 41 which comprises an analog-to-digital converter (ADC) 42, a microprocessor 43 clocked by a precise oscillator 44 (preferably of the TCXO type - Temperature Compensated Crystal Oscillator) and a memory 45.
  • ADC analog-to-digital converter
  • the processing unit 41 is connected to an energy management unit 46 connected to the battery, and to the digital screen 6.
  • the microprocessor 43 is configured to calculate the values. parameters, save the values in memory 45, and display the values on the screen 6.
  • the figure 5 shows a schematic illustration of the signal measured by the microphone during a measurement period P.
  • the 'tic' and 'tac' pulses are shown.
  • each pulse consists of a sequence of peaks linked to specific phenomena characterizing the escapement within the movement of the watch.
  • the analysis of the pulses makes it possible to calculate the value of a number of digital parameters which characterize the operation of the movement, such as the frequency of 'ticks' and 'tock'.
  • the operating state (advance or delay of the movement with respect to a reference oscillation obtained by oscillator 44), the reference mark (offset between the tic and tac frequencies), the amplitude of the movements (the angle between the equilibrium position and the point of return of the balance) and the type of escapement (Swiss lever escapement or coaxial escapement).
  • the values of one or more of these parameters are recorded at the end of each measurement period, for example the values of the five parameters identified above (frequency, state walking, etc.).
  • the values can be identified instantly at the end of the measurement period P.
  • a specific mode of operation includes the calculation of the value of the amplitude of the movement, on the basis of the sum 50 of the 'tic' pulses and the sum 51 of the 'tac' pulses picked up by the microphone during the complete duration of the period P. It It has been observed that the sum of the pulses makes it possible to better identify the individual peaks forming part of each of the pulses, and thus to improve the precision of the calculation of the amplitude of the movement.
  • the device is portable and compact, preferably having dimensions of the same order of magnitude as the case of a wristwatch.
  • the device is easy to use and targeted for use by the wearer of the watch, who can use it to periodically check the operation of their watch.
  • the device is therefore useful as a diagnostic device that can be used by the wearer of a watch, so as to collect data relating to the operation and which will enable a specialist to find faults.

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

Abstract

L'invention concerne un dispositif (1) portable qui permet de mesurer les valeurs d'un ou plusieurs paramètres caractérisant le fonctionnement d'une montre mécanique. Le dispositif est pourvu d'un microphone de contact comprenant une pièce de contact (10) et un élément piézoélectrique (20). La pièce de contact est mise en contact physique avec la boîte d'une montre lors d'une période de mesure. Le dispositif comprend également une source d'énergie, telle qu'une batterie remplaçable (26) ou rechargeable, un microprocesseur, une mémoire, et un écran (6) pour afficher les valeurs mesurées, de préférence un écran tactile. De préférence, les dimensions du dispositif sont d'un même ordre de grandeur que la boîte d'une montre à bracelet. Selon une forme spécifique, le dispositif (1) a la forme d'une loupe d'horloger. L'invention concerne également une méthode de mesure utilisant le dispositif de l'invention.The invention relates to a portable device (1) which makes it possible to measure the values of one or more parameters characterizing the operation of a mechanical watch. The device is provided with a contact microphone comprising a contact piece (10) and a piezoelectric element (20). The contact part is placed in physical contact with the case of a watch during a measurement period. The device also comprises a power source, such as a replaceable (26) or rechargeable battery, a microprocessor, a memory, and a screen (6) for displaying the measured values, preferably a touch screen. Preferably, the dimensions of the device are of the same order of magnitude as the case of a wristwatch. According to a specific form, the device (1) has the shape of a watchmaker's loupe. The invention also relates to a measurement method using the device of the invention.

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

La présente invention se rapporte aux montres mécaniques à remontage manuel ou automatique, et plus particulièrement à des dispositifs pour tester le mouvement mécanique de ce type de montre.The present invention relates to mechanical watches with manual or automatic winding, and more particularly to devices for testing the mechanical movement of this type of watch.

ETAT DE LA TECHNIQUESTATE OF THE ART

Des tests sont connus pour déterminer la régularité de la marche ainsi que d'autres paramètres caractéristiques d'un mouvement de montre mécanique. Les mesures appliquées consistent en de mesures optiques et/ou acoustiques des impulsions générées par l'oscillateur mécanique du mouvement de la montre. Les mesures acoustiques connues à ce jour utilisent souvent des microphones coûteux qui rendent cette solution peu économique. Les appareillages pour mettre en œuvre les méthodes optiques sont assez complexes et également coûteux.Tests are known to determine the regularity of the rate as well as other characteristic parameters of a mechanical watch movement. The measurements applied consist of optical and / or acoustic measurements of the pulses generated by the mechanical oscillator of the watch movement. Acoustic measurements known to date often use expensive microphones which make this solution uneconomical. The equipment for implementing the optical methods is quite complex and also expensive.

De manière générale, les dispositifs connus à ce jour pour tester une montre mécanique ont été développés pour un environnement de laboratoire. Ces dispositifs ne sont pas ciblés à une utilisation par le porteur de la montre. Un dispositif de test qui est compact et facile à utiliser n'est pas disponible sur le marché actuellement.In general, the devices known to date for testing a mechanical watch have been developed for a laboratory environment. These devices are not intended for use by the wearer of the watch. A test device which is compact and easy to use is not currently available in the market.

RESUMÉ DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention vise à fournir une solution aux problèmes décrits ci-dessus. Ce but est atteint par un dispositif ainsi que par les méthodes selon les revendications annexées.The present invention aims to provide a solution to the problems described above. This object is achieved by a device as well as by the methods according to the appended claims.

L'invention concerne un dispositif portable qui permet de mesurer les valeurs d'un ou plusieurs paramètres caractérisant le fonctionnement d'une montre mécanique. Le dispositif est pourvu d'un microphone de contact comprenant une pièce de contact et par exemple un élément piézoélectrique. Le dispositif est pris en main et la pièce de contact est mise en contact physique avec la boîte d'une montre lors d'une période de mesure. Le dispositif comprend également une source d'énergie, telle qu'une batterie remplaçable ou rechargeable, un microprocesseur, une mémoire, et un écran pour afficher les valeurs mesurées, de préférence un écran tactile. De préférence, les dimensions du dispositif sont du même ordre de grandeur que la boîte d'une montre à bracelet. Selon une forme spécifique, le dispositif a la forme d'une loupe d'horloger. L'invention concerne également une méthode de mesure utilisant le dispositif de l'invention. Le dispositif est facile à utiliser et permet au porteur de tester sa propre montre.The invention relates to a portable device which makes it possible to measure the values of one or more parameters characterizing the operation of a mechanical watch. The device is provided with a contact microphone comprising a contact piece and for example a piezoelectric element. The device is taken in hand and the contact part is put in physical contact with the case of a watch during a measurement period. The device also includes a power source, such as a replaceable or rechargeable battery, a microprocessor, a memory, and a screen for displaying measured values, preferably a touch screen. Preferably, the dimensions of the device are of the same order of magnitude as the case of a wristwatch. According to a specific form, the device has the shape of a watchmaker's loupe. The invention also relates to a measurement method using the device of the invention. The device is easy to use and allows the wearer to test their own watch.

D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante de modes de réalisation préférés, présentés à titre d'exemple non limitatif en référence aux dessins annexésOther characteristics and advantages of the present invention will become apparent from the following description of preferred embodiments, presented by way of non-limiting example with reference to the accompanying drawings.

BRÈVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

L'invention sera décrite ci-après de manière plus détaillée à l'aide des dessins annexés, donnés à titre d'exemples nullement limitatifs, dans lesquels :

  • les figures 1a et 1b représentent deux vues 3D d'un dispositif selon une forme d'exécution de l'invention,
  • la figure 2 représente une vue en éclaté du dispositif de la figure 1,
  • la figure 3 représente une vue en plan et en coupe du dispositif des figures 1 et 2,
  • la figure 4 représente un schéma des composants montés sur le PCB à l'intérieur du dispositif selon une forme d'exécution de l'invention, et
  • la figure 5 représente un signal typique capté par le microphone à l'intérieur du dispositif de l'invention, quand le dispositif est maintenu en contact avec une boîte de montre.
The invention will be described below in more detail with the aid of the appended drawings, given by way of non-limiting examples, in which:
  • the figures 1a and 1b represent two 3D views of a device according to one embodiment of the invention,
  • the figure 2 shows an exploded view of the device of the figure 1 ,
  • the figure 3 shows a plan and sectional view of the device of figures 1 and 2 ,
  • the figure 4 represents a diagram of the components mounted on the PCB inside the device according to one embodiment of the invention, and
  • the figure 5 represents a typical signal picked up by the microphone inside the device of the invention, when the device is kept in contact with a watch case.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

Le dispositif 1 représenté aux figures 1a et 1b a la forme extérieure et les dimensions d'une loupe d'horloger, comportant une portion cylindrique 2 et une portion à section conique ou courbée 3 qui s'élargit à partir de la portion cylindrique 2 vers une section 4 plus large que la section cylindrique 2. L'invention n'est pas limitée à cette forme, puisque la fonctionnalité du dispositif est bien différente de celle d'une loupe d'horloger. Au bout de la portion cylindrique 2, une surface courbée 5 est prévue. La surface 5 sert de surface de contact entre le dispositif et la boîte d'une montre à tester. La courbure de la surface de contact 5 et la dureté du matériau de la surface sont telles que la zone de contact entre la surface 5 et la boîte se limite essentiellement à un point, mesuré par rapport aux dimensions moyennes de la montre. Un écran digital 6, de préférence un écran tactile, est intégré dans la section 4, pour afficher les données mesurées et pour recevoir des commandes de l'utilisateur.Device 1 shown in figures 1a and 1b has the external shape and dimensions of a watchmaker's loupe, comprising a cylindrical portion 2 and a portion with a conical or curved section 3 which widens from the cylindrical portion 2 towards a section 4 which is wider than the cylindrical section 2. The invention is not limited to this form, since the functionality of the device is very different from that of a watchmaker's loupe. At the end of the cylindrical portion 2, a curved surface 5 is provided. Surface 5 serves as a contact surface between the device and the case of a watch to be tested. The curvature of the contact surface 5 and the hardness of the surface material are such that the contact area between the surface 5 and the case is essentially limited to one point, measured relative to the average dimensions of the watch. A digital screen 6, preferably a touch screen, is integrated in section 4, to display the measured data and to receive commands from the user.

On voit sur les figures 2 et 3 que la surface de contact 5 est la surface extérieure d'une pièce ronde 10, nommée ci-après pièce de contact. Pour réaliser le contact en un point, la pièce de contact 10 est de préférence fabriquée à partir d'un métal dur ou d'un matériau synthétique dur, par exemple ayant une dureté d'au moins 100 Vickers. De l'autre côté de la surface extérieure 5, la pièce de contact 10 comprend une cavité cylindrique 11 entourée par une élévation creuse et cylindrique 12, ayant un diamètre inférieur au diamètre de la surface de contact 5. La pièce de contact 10 est attachée à un rebord interne 13 d'une armature cylindrique 14, de préférence en métal, l'élévation cylindrique 12 passant à travers l'ouverture définie par le rebord 13. Une rondelle 15 en matériau compressible, par exemple une mousse antichoc, est montée entre la pièce de contact 10 et le rebord 13. La pièce 10, la rondelle 15 et le rebord 13 sont solidarisés entre eux, par exemple par l'utilisation d'une mousse adhésive pour la rondelle 15. Quand le dispositif 1 n'est pas utilisé, le sommet de la surface courbée 5 dépasse le plan inférieur de l'armature 14, par un offset 'a' indiqué à la figure 3.We see on the figures 2 and 3 that the contact surface 5 is the outer surface of a round part 10, hereinafter called the contact part. For making the contact at one point, the contact piece 10 is preferably made from a hard metal or a hard synthetic material, for example having a hardness of at least 100 Vickers. On the other side of the outer surface 5, the contact piece 10 comprises a cylindrical cavity 11 surrounded by a hollow, cylindrical elevation 12, having a diameter less than the diameter of the contact surface 5. The contact piece 10 is attached. to an internal rim 13 of a cylindrical frame 14, preferably of metal, the cylindrical elevation 12 passing through the opening defined by the rim 13. A washer 15 of compressible material, for example shock-absorbing foam, is mounted between the contact piece 10 and the flange 13. The piece 10, the washer 15 and the flange 13 are joined together, for example by the use of an adhesive foam for the washer 15. When the device 1 is not used, the top of the curved surface 5 exceeds the lower plane of the reinforcement 14, by an offset 'a' indicated at figure 3 .

Un élément piézoélectrique 20 est fixé au fond de la cavité 11 de la pièce de contact 10, de sorte que l'ensemble de la pièce 10 et l'élément piézoélectrique 20 constitue un microphone de contact. L'élément piézoélectrique 20 est connecté par un fil électrique 21 à un PCB (plaque à circuit imprimé) 22 fixé à un deuxième rebord interne 23 de l'armature 14. Le PCB 22 est muni de composants électroniques, configurés pour traiter et analyser les signaux générés par le microphone, et décrits avec plus de détails ultérieurement.A piezoelectric element 20 is fixed to the bottom of the cavity 11 of the contact piece 10, so that the assembly of the piece 10 and the piezoelectric element 20 constitutes a contact microphone. The piezoelectric element 20 is connected by an electric wire 21 to a PCB (printed circuit board) 22 attached to a second internal flange 23 of the frame 14. The PCB 22 is provided with electronic components, configured to process and analyze the data. signals generated by the microphone, and described in more detail later.

Un porte-batterie 25 en plastique est inséré de manière fixe dans l'armature 14, au-dessus du PCB 22. Le porte batterie 25 comprend un logement apte à recevoir une batterie remplaçable 26, par exemple une batterie standard du type CR1632. Selon d'autres formes d'exécution, le dispositif est pourvu d'une batterie rechargeable. Des conducteurs (non-représentés) sont intégrés dans le porte-batterie 25, pour connecter la batterie 26 au PCB 22, de manière à alimenter les composants du PCB. Le porte-batterie 25 est pourvu d'un nombre d'ouvertures 27 pour le passage de broches à ressort 28 qui vont établir une connexion entre le PCB 22 et l'écran digital 6 du dispositif. L'écran 6 est pourvu d'un connecteur 30 qui sera en contact avec les broches à ressort 28.A plastic battery holder 25 is fixedly inserted into the frame 14, above the PCB 22. The battery holder 25 comprises a housing suitable for receiving a replaceable battery 26, for example a standard battery of the CR1632 type. According to other embodiments, the device is provided with a rechargeable battery. Conductors (not shown) are integrated in the battery holder 25, to connect the battery 26 to the PCB 22, so as to supply the components of the PCB. The battery holder 25 is provided with a number of openings 27 for the passage of spring pins 28 which will establish a connection between the PCB 22 and the screen. digital 6 of the device. The screen 6 is provided with a connector 30 which will be in contact with the spring pins 28.

Un boîtier externe 31 en forme de loupe est monté autour de l'armature 14, et clipsé sur ladite armature au moyen d'une nervure 32 sur la surface externe de l'armature 14. La nervure 32 entre dans un évidement 33 à l'intérieur du boîtier externe 31 quand celui-ci est mis autour de l'armature 14 et poussé vers le bas. Le boîtier externe 31 est fabriqué à partir d'un matériau synthétique, par exemple le silicone, qui permet suffisamment de déformation pour réaliser la connexion par clipsage. Au lieu de ce type de connexion, d'autres moyens pour réversiblement attacher le boîtier 31 à l'armature 14 sont possibles dans le cadre de la portée de l'invention. La section supérieure du boîtier 31 comporte un verre de protection 34 pour l'écran 6, permettant de communiquer les commandes de l'utilisateur dans le cas d'un écran tactile. De l'autre côté, le boîtier 31 entre en contact avec un rebord externe 35 de l'armature 14.An outer case 31 in the form of a magnifying glass is mounted around the frame 14, and clipped onto said frame by means of a rib 32 on the outer surface of the frame 14. The rib 32 enters a recess 33 at the bottom. interior of the outer casing 31 when the latter is put around the frame 14 and pushed downwards. The outer housing 31 is made from a synthetic material, for example silicone, which allows enough deformation to achieve the clip connection. Instead of this type of connection, other means for reversibly attaching the housing 31 to the frame 14 are possible within the scope of the invention. The upper section of the housing 31 comprises a protective glass 34 for the screen 6, making it possible to communicate the commands of the user in the case of a touch screen. On the other side, the housing 31 comes into contact with an outer rim 35 of the frame 14.

Pour utiliser le dispositif 1, un utilisateur prend le dispositif en main et le positionne avec la surface de contact 5 en contact physique avec une boîte de montre en état remonté, en appuyant légèrement sur le dispositif. L'offset 'a' permet que cette pression va comprimer la rondelle résiliente 15, de manière à assurer une force de contact adéquate entre le dispositif 1 et la boîte de montre. Le dispositif est maintenu dans cette position à l'aide d'un système de fixation pendant une période de mesure d'une dizaine de secondes par exemple. L'utilisateur peut activer le dispositif via l'écran tactile 6 ou le dispositif peut être configuré pour être activé automatiquement dès qu'il est positionné et pressé contre une surface de la montre. Une période de mesure est alors déclenchée pendant laquelle le microphone mesure les bruits acoustiques générés par le mouvement mécanique de la montre. De manière connue en soi, ces bruits consistent en une séquence alternante de deux types d'impulsions de caractère différent, souvent nommées 'tic' et 'tac'. L'analyse des impulsions permet le calcul de paramètres liés au fonctionnement du mouvement, tels que l'état de marche et le repère. Ces analyses et calculs sont réalisés par les composants montés sur le PCB. Plusieurs configurations de ces composants sont possibles dans le cadre de l'invention. Un exemple d'une configuration est illustré à la figure 4.To use the device 1, a user takes the device in hand and positions it with the contact surface 5 in physical contact with a watch case in reassembled state, by pressing lightly on the device. The offset 'a' allows this pressure to compress the resilient washer 15, so as to ensure an adequate contact force between the device 1 and the watch case. The device is held in this position using a fixing system for a measurement period of around ten seconds, for example. The user can activate the device via the touch screen 6 or the device can be configured to be activated automatically as soon as it is positioned and pressed against a surface of the watch. A measurement period is then triggered during which the microphone measures the acoustic noises generated by the mechanical movement of the watch. In a manner known per se, these noises consist of an alternating sequence of two types of pulses of different character, often called 'tic' and 'tac'. The analysis of the pulses allows the calculation of parameters related to the operation of the movement, such as the operating state and the mark. These analyzes and calculations are carried out by the components mounted on the PCB. Several configurations of these components are possible within the framework of the invention. An example of a configuration is shown in figure 4 .

Le signal généré par l'élément piézoélectrique 20 passe par un étage d'amplification 40 vers une unité de traitement 41 qui comporte un convertisseur analogique-digital (ADC) 42, un microprocesseur 43 cadencé par un oscillateur précis 44 (de préférence du type TCXO - Temperature Compensated Crystal Oscillator) et une mémoire 45. L'unité de traitement 41 est reliée à une unité de gestion d'énergie 46 reliée à la batterie, et à l'écran digital 6. Le microprocesseur 43 est configuré pour calculer les valeurs des paramètres, enregistrer les valeurs dans la mémoire 45, et afficher les valeurs sur l'écran 6.The signal generated by the piezoelectric element 20 passes through an amplification stage 40 to a processing unit 41 which comprises an analog-to-digital converter (ADC) 42, a microprocessor 43 clocked by a precise oscillator 44 (preferably of the TCXO type - Temperature Compensated Crystal Oscillator) and a memory 45. The processing unit 41 is connected to an energy management unit 46 connected to the battery, and to the digital screen 6. The microprocessor 43 is configured to calculate the values. parameters, save the values in memory 45, and display the values on the screen 6.

La figure 5 représente une illustration schématique du signal mesuré par le microphone lors d'une période de mesure P. Les impulsions 'tic' et 'tac' sont représentées. De manière connue en soi, chaque impulsion consiste en une séquence de pics liés à des phénomènes spécifiques caractérisant l'échappement à l'intérieur du mouvement de la montre. Comme il est également bien connu de l'état de la technique, l'analyse des impulsions permet de calculer la valeur d'un nombre de paramètres numériques qui caractérisent le fonctionnement du mouvement, tels que la fréquence des 'tic' et des 'tac', l'état de marche (avance ou retard du mouvement par rapport à une oscillation de référence obtenue par l'oscillateur 44), le repère (décalage entre les fréquences tic et tac), l'amplitude des mouvements (l'angle entre la position d'équilibre et le point de retour du balancier) et le type d'échappement (échappement à ancre Suisse ou échappement coaxial).The figure 5 shows a schematic illustration of the signal measured by the microphone during a measurement period P. The 'tic' and 'tac' pulses are shown. In a manner known per se, each pulse consists of a sequence of peaks linked to specific phenomena characterizing the escapement within the movement of the watch. As is also well known in the state of the art, the analysis of the pulses makes it possible to calculate the value of a number of digital parameters which characterize the operation of the movement, such as the frequency of 'ticks' and 'tock'. ', the operating state (advance or delay of the movement with respect to a reference oscillation obtained by oscillator 44), the reference mark (offset between the tic and tac frequencies), the amplitude of the movements (the angle between the equilibrium position and the point of return of the balance) and the type of escapement (Swiss lever escapement or coaxial escapement).

Selon un mode d'opération possible du dispositif de l'invention, les valeurs d'un ou plusieurs de ces paramètres sont enregistrées à la fin de chaque période de mesure, par exemple les valeurs des cinq paramètres identifiés ci-dessus (fréquence, état de marche, etc). Les valeurs peuvent être identifiées de manière instantanée à la fin de la période de mesure P. Pour certains paramètres, il est également possible de calculer les valeurs sur la base des signaux captés lors de la période entière. Par exemple et comme illustré à la figure 5, les fréquences peuvent être calculées comme des moyennes f tic et f tac des fréquences instantanées ftic et ftac déterminées sur la base du temps entre deux impulsions du même type (tic ou tac).According to a possible mode of operation of the device of the invention, the values of one or more of these parameters are recorded at the end of each measurement period, for example the values of the five parameters identified above (frequency, state walking, etc.). The values can be identified instantly at the end of the measurement period P. For some parameters, it is also possible to calculate the values on the basis of the signals received during the entire period. For example and as shown in figure 5 , frequencies can be calculated as averages f tic and f tac instantaneous ftic and ftac frequencies determined on the basis of the time between two pulses of the same type (tic or tac).

Un mode d'opération spécifique, illustrée également à la figure 5, inclut le calcul de la valeur de l'amplitude du mouvement, sur la base de la somme 50 des impulsions 'tic' et la somme 51 des impulsions 'tac' captées par le microphone lors de la durée complète de la période P. Il a été constaté que la somme des impulsions permet de mieux identifier les pics individuels faisant partie de chacune des impulsions, et ainsi d'améliorer la précision du calcul de l'amplitude du mouvement.A specific mode of operation, also illustrated on figure 5 , includes the calculation of the value of the amplitude of the movement, on the basis of the sum 50 of the 'tic' pulses and the sum 51 of the 'tac' pulses picked up by the microphone during the complete duration of the period P. It It has been observed that the sum of the pulses makes it possible to better identify the individual peaks forming part of each of the pulses, and thus to improve the precision of the calculation of the amplitude of the movement.

L'invention n'est pas limitée à la forme externe représentée aux figures. De manière générale, le dispositif est portable et compact, de préférence ayant des dimensions d'un même ordre de grandeur que la boîte d'une montre à bracelet. Le dispositif est facile à utiliser et ciblé à l'utilisation par le porteur de la montre, qui peut l'utiliser pour périodiquement contrôler le fonctionnement de sa montre. Le dispositif est donc utile comme dispositif de diagnostic utilisable par le porteur d'une montre, de manière à rassembler des données relatives au fonctionnement et qui permettront à un spécialiste de retrouver des défauts.The invention is not limited to the external shape shown in the figures. In general, the device is portable and compact, preferably having dimensions of the same order of magnitude as the case of a wristwatch. The device is easy to use and targeted for use by the wearer of the watch, who can use it to periodically check the operation of their watch. The device is therefore useful as a diagnostic device that can be used by the wearer of a watch, so as to collect data relating to the operation and which will enable a specialist to find faults.

Claims (10)

Dispositif (1) pour tester une montre mécanique, caractérisé en ce que le dispositif est un dispositif portable, configuré pour être pris en main et maintenu en contact physique avec la boîte d'une montre à bracelet, en ce que le dispositif comprend : - un microphone de contact comprenant une pièce de contact (10) et un élément piézoélectrique (20), pour capter les bruits des impulsions générées par le mouvement de la montre, quand la pièce de contact (10) est maintenue en contact physique avec la boîte de la montre, - un microprocesseur (43) configuré pour calculer sur la base du signal généré par le microphone, les valeurs d'un ou plusieurs paramètres caractérisant le fonctionnement du mouvement de la montre, ainsi qu'une mémoire (45) pour enregistrer lesdites valeurs, - un écran (6) configuré pour afficher au moins lesdites valeurs, - une source d'énergie (26) électrique pour alimenter au moins le microprocesseur (43), la mémoire (45) et l'écran (6). Device (1) for testing a mechanical watch, characterized in that the device is a portable device, configured to be taken in the hand and kept in physical contact with the case of a wristwatch, in that the device comprises: - a contact microphone comprising a contact piece (10) and a piezoelectric element (20), to pick up the noises of the impulses generated by the movement of the watch, when the contact piece (10) is kept in physical contact with the watch. watch box, - a microprocessor (43) configured to calculate, on the basis of the signal generated by the microphone, the values of one or more parameters characterizing the operation of the watch movement, as well as a memory (45) for recording said values, - a screen (6) configured to display at least said values, - an electrical energy source (26) for supplying at least the microprocessor (43), the memory (45) and the screen (6). Dispositif selon la revendication 1, comportant un boîtier externe (31), une armature (14) à l'intérieur du boîtier externe, et dans lequel la pièce de contact (10) présente une surface (5) extérieure courbée et configurée pour être mise en contact avec la boîte de montre, la pièce de contact (10) étant attachée à l'armature (14), de sorte que la surface courbée (5) sort au moins partiellement du boîtier externe (31) quand le dispositif n'est pas utilisé.A device according to claim 1, comprising an outer housing (31), a frame (14) within the outer housing, and wherein the contact piece (10) has an outer surface (5) curved and configured to be fitted. in contact with the watch case, the contact piece (10) being attached to the frame (14), so that the curved surface (5) protrudes at least partially from the outer case (31) when the device is not not used. Dispositif selon la revendication 2, dans lequel la pièce de contact (10) est attachée à une surface rigide de l'armature (14), avec un élément résilient (15) installé entre la pièce de contact (10) et la surface rigide.A device according to claim 2, wherein the contact piece (10) is attached to a rigid surface of the frame (14), with a resilient member (15) installed between the contact piece (10) and the rigid surface. Dispositif selon l'une quelconque des revendications 2 et 3, dans lequel le microprocesseur (43) et la mémoire (45) sont montés sur un PCB (22) qui est monté dans l'armature (14).Device according to any one of claims 2 and 3, wherein the microprocessor (43) and the memory (45) are mounted on a PCB (22) which is mounted in the frame (14). Dispositif selon l'une quelconque des revendications 2 à 4, dans lequel l'armature (14) et au moins une portion du boîtier externe (31) ont une forme de cylindre rond, la pièce de contact (10) étant une pièce ronde qui sort du boîtier (31) d'un côté dudit boîtier, et dans lequel l'écran (6) est monté d'un autre côté dudit boîtier.Device according to any one of claims 2 to 4, wherein the frame (14) and at least a portion of the outer housing (31) have the shape of a round cylinder, the contact piece (10) being a round piece which emerges from the housing (31) on one side of said housing, and in which the screen (6) is mounted on the other side of said housing. Dispositif selon la revendication 5, dans lequel le boîtier externe (31) a la forme d'une loupe d'horloger, comprenant une portion cylindrique (2) et une portion (3) qui s'élargit vers une section (4) plus large que la portion cylindrique (2), et dans lequel l'écran (6) est monté dans ladite section large (4).Device according to Claim 5, in which the outer casing (31) is in the form of a watchmaker's loupe, comprising a cylindrical portion (2) and a portion (3) which widens towards a wider section (4). as the cylindrical portion (2), and in which the screen (6) is mounted in said wide section (4). Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'écran (6) est un écran tactile.Device according to any one of the preceding claims, in which the screen (6) is a touch screen. Méthode pour tester une montre mécanique en état remonté utilisant un dispositif (1) selon l'une quelconque des revendications précédentes, la méthode comprenant : - l'acquisition du signal généré par le microphone lors d'une période de mesure pendant laquelle le dispositif (1) est maintenu en contact avec la boîte de la montre, le signal représentant une séquence d'impulsions 'tic' et 'tac' générées par le mouvement de la montre, - l'enregistrement, à la fin de la période de mesure, de la valeur d'au moins un paramètre caractérisant le fonctionnement du mouvement de la montre, - la répétition des étapes précédentes à intervalles déterminés. Method for testing a mechanical watch in wound condition using a device (1) according to any one of the preceding claims, the method comprising: - acquisition of the signal generated by the microphone during a measurement period during which the device (1) is kept in contact with the watch case, the signal representing a sequence of 'tick' and 'tac' pulses generated by the movement of the watch, - recording, at the end of the measurement period, of the value of at least one parameter characterizing the operation of the watch movement, - repetition of the previous steps at determined intervals. Méthode selon la revendication 8, selon laquelle les valeurs enregistrées comprennent une ou plusieurs des valeurs suivantes : - la fréquence des impulsions 'tic' et la fréquence des impulsions 'tac', - l'état de marche, - le repère, - l'amplitude du mouvement, - le type de mouvement. A method according to claim 8, wherein the recorded values include one or more of the following values: - the frequency of the 'tic' pulses and the frequency of the 'tac' pulses, - working condition, - the landmark, - amplitude of movement, - the type of movement. Méthode selon la revendication 9 comprenant l'enregistrement de l'amplitude du mouvement et selon laquelle le calcul de l'amplitude est basée sur la somme (50) des signaux liés aux impulsions 'tic' et sur la somme (51) des signaux liés aux impulsions 'tac', lors de la période de mesure.A method according to claim 9 comprising recording the amplitude of motion and wherein the calculation of the amplitude is based on the sum (50) of the signals related to the 'tic' pulses and on the sum (51) of the related signals. to 'tac' pulses, during the measurement period.
EP19204404.8A 2019-10-21 2019-10-21 Measuring device for a mechanical watch Active EP3812848B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19204404.8A EP3812848B1 (en) 2019-10-21 2019-10-21 Measuring device for a mechanical watch
JP2020159477A JP6982154B2 (en) 2019-10-21 2020-09-24 Measuring device for mechanical watches
US17/030,954 US11372375B2 (en) 2019-10-21 2020-09-24 Measuring device for a mechanical watch
CN202011131402.7A CN112764341B (en) 2019-10-21 2020-10-21 Measuring device for a mechanical watch

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EP3812847B1 (en) * 2019-10-21 2022-06-15 The Swatch Group Research and Development Ltd Measuring system for a plurality of mechanical clock movements

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JP2021067676A (en) 2021-04-30
EP3812848B1 (en) 2023-07-05
US20210116870A1 (en) 2021-04-22
JP6982154B2 (en) 2021-12-17
US11372375B2 (en) 2022-06-28
CN112764341A (en) 2021-05-07

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