EP3812848B1 - Messvorrichtung für mechanische armbanduhr - Google Patents

Messvorrichtung für mechanische armbanduhr Download PDF

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Publication number
EP3812848B1
EP3812848B1 EP19204404.8A EP19204404A EP3812848B1 EP 3812848 B1 EP3812848 B1 EP 3812848B1 EP 19204404 A EP19204404 A EP 19204404A EP 3812848 B1 EP3812848 B1 EP 3812848B1
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EP
European Patent Office
Prior art keywords
watch
contact
movement
screen
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.)
Active
Application number
EP19204404.8A
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English (en)
French (fr)
Other versions
EP3812848A1 (de
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
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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/de
Priority to US17/030,954 priority patent/US11372375B2/en
Priority to JP2020159477A priority patent/JP6982154B2/ja
Priority to CN202011131402.7A priority patent/CN112764341B/zh
Publication of EP3812848A1 publication Critical patent/EP3812848A1/de
Application granted granted Critical
Publication of EP3812848B1 publication Critical patent/EP3812848B1/de
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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
    • G04D7/006—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
    • 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

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 document CH 708 924 A2 describes a device for measuring a mechanical watch, which is connected by a connector to a mobile device, such as a portable telephone for its electrical supply and the display of parameters measured by the measuring device.
  • a watch can be placed on a surface of the measuring device to test its functioning.
  • the measuring device precisely comprises a vibration circuit which is a microphone or a piezoelectric blade.
  • the document US 3,946,592 A describes a measuring device provided with a microphone, and the mechanical watch can be placed on a flat surface of the measuring device.
  • the document FR 2 059 696 A1 discloses a contact piezoelectric microphone for a clock movement testing apparatus, which is made of a cylindrical rod-shaped piezoelectric element for performing a measurement.
  • 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 held in the hand and the contact part is brought into physical contact with the case of a watch during a measurement period.
  • the device also includes an energy source, such as a replaceable or rechargeable battery, a microprocessor, a memory, and a screen for displaying the 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 magnifying glass.
  • 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.
  • the 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 conical or curved section portion 3 which widens from the cylindrical portion 2 towards a section 4 wider than the cylindrical section 2.
  • the invention is not limited to this form, since the functionality of the device is quite 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 material of the surface are such that the contact zone between the surface 5 and the case is essentially limited to a point, measured with respect to the average dimensions of the watch.
  • a digital screen 6, preferably a touch screen, is integrated in the 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 piece 10, hereinafter called the contact piece.
  • 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 and cylindrical elevation 12, having a diameter smaller than the diameter of the contact surface 5.
  • the contact piece 10 is attached to an internal flange 13 of a cylindrical frame 14, preferably made of metal, the cylindrical elevation 12 passing through the opening defined by the flange 13.
  • a washer 15 of compressible material, for example a 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 armature 14, by an offset ⁇ a' indicated at picture 3 .
  • a piezoelectric element 20 is fixed to the bottom of the cavity 11 of the contact part 10, so that the assembly of the part 10 and the piezoelectric element 20 constitutes a contact microphone.
  • the piezoelectric element 20 is connected by an electrical wire 21 to a PCB (printed circuit board) 22 attached to a second internal flange 23 of the armature 14.
  • the PCB 22 is provided with electronic components, configured to process and analyze the signals generated by the microphone, and described in more detail later.
  • a plastic battery holder 25 is inserted in a fixed manner in the frame 14, above the PCB 22.
  • the battery holder 25 comprises a housing capable of 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 into 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 digital screen 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 inside the outer casing 31 when the latter is put around the frame 14 and pushed down.
  • the outer casing 31 is made from a synthetic material, for example silicone, which allows enough deformation to make the connection by clipping. Instead of this type of connection, other means for reversibly attaching housing 31 to frame 14 are possible within the scope of the invention.
  • the upper section of the case 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 edge 35 of the armature 14.
  • a user takes the device in hand and positions it with the contact surface 5 in physical contact with a watch case in the wound 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 box.
  • the device is held in this position using a fastening system for a measurement period of about 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'.
  • Pulse analysis allows the calculation of parameters related to the operation of the movement, such as the running 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 scope 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.
  • FIG. 5 represents a schematic illustration of the signal measured by the microphone during a measurement period P.
  • the 'tic' and ⁇ tac' pulses are represented.
  • each pulse consists of a sequence of peaks linked to specific phenomena characterizing the escapement inside the movement of the watch.
  • the analysis of the impulses 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 the 'tic's and ⁇ tac', the running state (advance or delay of the movement compared to a reference oscillation obtained by the oscillator 44), the mark (shift between the tic and tac frequencies), the amplitude of the movements (the angle between the position of equilibrium and the point of return of the balance wheel) 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 instantaneously at the end of the measurement period P.
  • the frequencies can be calculated as averages f tick and f tac instantaneous frequencies f tick and f tac determined on the basis of the time between two pulses of the same type (tick or tac).
  • 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 'tick' 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 found 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 his 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 operation and which will enable a specialist to find faults.

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

Claims (9)

  1. Tragbare Vorrichtung (1) zum Testen einer mechanischen Uhr, die dazu ausgelegt ist, in die Hand genommen und in physischem Kontakt mit dem Gehäuse einer mechanischen Uhr gehalten zu werden, wobei die Vorrichtung umfasst:
    - ein Kontaktmikrofon, umfassend ein Kontaktteil (10) und ein piezoelektrisches Element (20), um die Geräusche der Impulse einzufangen, die von dem Uhrwerk der Uhr erzeugt werden, wenn das Kontaktteil (10) in physischem Kontakt mit dem Gehäuse der Uhr gehalten wird,
    - einen Mikroprozessor (43), der dazu ausgelegt ist, auf der Basis des von dem Mikrofon erzeugten Signals die Werte von einem oder mehreren Parametern zu berechnen, die die Funktionsweise des Uhrwerks der Uhr charakterisieren, sowie einen Speicher (45), um die Werte zu speichern,
    - einen Bildschirm (6), der dazu ausgelegt ist, mindestens die Werte anzuzeigen,
    - eine Stromquelle (26), um mindestens den Mikroprozessor (43), den Speicher (45) und den Bildschirm (6) zu versorgen,
    dadurch gekennzeichnet, dass die Vorrichtung (1) ein äußeres Gehäuse (31), eine Armatur (14) im Inneren des äußeren Gehäuses aufweist und wobei das Kontaktteil (10) eine gekrümmte äußere Oberfläche (5) aufweist und dazu ausgelegt ist, mit dem Gehäuse der Uhr in Kontakt versetzt zu sein, wobei das Kontaktteil (10) derart an der Armatur (14) anliegt, dass die gekrümmte Oberfläche (5) mindestens teilweise aus dem äußeren Gehäuse (31) heraustritt, wenn die Vorrichtung nicht verwendet wird, wobei die Krümmung der Kontaktoberfläche (5) und die Härte des Oberflächenmaterials derart sind, dass sich die Kontaktzone zwischen der Oberfläche (5) und dem Gehäuse im Wesentlichen auf einen Punkt beschränkt, gemessen im Verhältnis zu den mittleren Abmessungen der Uhr.
  2. Vorrichtung nach Anspruch 1, wobei das Kontaktteil (10) an einer starren Oberfläche der Armatur (14) mit einem federnden Element (15) anliegt, das zwischen dem Kontaktteil (10) und der starren Oberfläche installiert ist.
  3. Vorrichtung nach einem der Ansprüche 1 und 2, wobei der Mikroprozessor (43) und der Speicher (45) auf einer Platine (22) angebracht sind, die in der Armatur (14) angebracht ist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, wobei die Armatur (14) und mindestens ein Abschnitt des äußeren Gehäuses (31) eine runde Zylinderform haben, wobei das Kontaktteil (10) ein rundes Teil ist, das aus dem Gehäuse (31) auf einer Seite des Gehäuses heraustritt und wobei der Bildschirm (6) auf einer anderen Seite des Gehäuses angebracht ist.
  5. Vorrichtung nach Anspruch 4, wobei das äußere Gehäuse (31) die Form einer Uhrmacherlupe hat, die einen zylindrischen Abschnitt (2) und einen Abschnitt (3) umfasst, der sich zu einem Querschnitt (4) erweitert, der breiter als der zylindrische Abschnitt (2) ist, und wobei der Bildschirm (6) in dem breiten Querschnitt (4) angebracht ist.
  6. Vorrichtung nach einem der vorangehenden Ansprüche, wobei der Bildschirm (6) ein berührungsempfindlicher Bildschirm ist.
  7. Methode zum Testen einer mechanischen Uhr in aufgezogenem Zustand, die eine Vorrichtung (1) nach einem der vorangehenden Ansprüche verwendet, wobei die Methode umfasst:
    - das Erfassen des von dem Mikrofon während eines Messzeitraums erzeugten Signals, bei dem die Vorrichtung (1) mit dem Gehäuse der Uhr im Kontakt gehalten wird, wobei das Signal eine Sequenz von "Tick"- und "Tack"-Impulsen darstellt, die von dem Uhrwerk der Uhr erzeugt werden,
    - das Speichern, am Ende des Messzeitraums, des Wertes mindestens eines Parameters, der die Funktionsweise des Uhrwerks der Uhr charakterisiert,
    - das Wiederholen der vorangehenden Schritte in bestimmen Intervallen.
  8. Methode nach Anspruch 7, wobei die gespeicherten Werte einen oder mehrere der folgenden Werte umfassen:
    - die Frequenz der "Tick"-Impulse und die Frequenz der "Tack"-Impulse,
    - den Gangzustand,
    - den Bezug,
    - die Bewegungsamplitude,
    - den Uhrwerkstyp.
  9. Methode nach Anspruch 8, umfassend das Speichern der Amplitude des Uhrwerks und wobei die Berechnung der Amplitude auf der Summe (50) der Signale basiert, die mit den "Tick"-Impulsen verbunden sind, und auf der Summe (51) der Signale, die mit den "Tack"-Impulsen verbunden sind, während des Messzeitraums.
EP19204404.8A 2019-10-21 2019-10-21 Messvorrichtung für mechanische armbanduhr Active EP3812848B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19204404.8A EP3812848B1 (de) 2019-10-21 2019-10-21 Messvorrichtung für mechanische armbanduhr
US17/030,954 US11372375B2 (en) 2019-10-21 2020-09-24 Measuring device for a mechanical watch
JP2020159477A JP6982154B2 (ja) 2019-10-21 2020-09-24 機械式時計用測定装置
CN202011131402.7A CN112764341B (zh) 2019-10-21 2020-10-21 用于机械表的测量设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19204404.8A EP3812848B1 (de) 2019-10-21 2019-10-21 Messvorrichtung für mechanische armbanduhr

Publications (2)

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EP3812848A1 EP3812848A1 (de) 2021-04-28
EP3812848B1 true EP3812848B1 (de) 2023-07-05

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US (1) US11372375B2 (de)
EP (1) EP3812848B1 (de)
JP (1) JP6982154B2 (de)
CN (1) CN112764341B (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3812847B1 (de) * 2019-10-21 2022-06-15 The Swatch Group Research and Development Ltd Messsystem für mehrere mechanische uhrwerke

Family Cites Families (14)

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CH1310169A4 (de) * 1969-08-27 1973-04-30
US3802251A (en) * 1971-10-28 1974-04-09 Becker Kg H Method and apparatus for testing a watch for tightness
US3946592A (en) * 1973-04-09 1976-03-30 Citizen Watch Company Limited Digital time error measuring arrangement
CN101271012B (zh) * 2008-01-30 2011-06-08 西安华舜测量设备有限责任公司 一种非接触便携式超声波液位测量装置
JP2012160777A (ja) * 2011-01-28 2012-08-23 Seiko Instruments Inc パッケージの製造方法、圧電振動子、発振器、電子機器及び電波時計
JP5744670B2 (ja) * 2011-08-05 2015-07-08 キヤノン株式会社 超音波モータ及びそれを有するレンズ装置
EP2607972B1 (de) * 2011-12-22 2016-04-27 The Swatch Group Research and Development Ltd. Dichter Druckknopf für Armbanduhr
CH708942A2 (fr) 2013-12-05 2015-06-15 Gaeatec S Rl Dispositif de mesure de paramètres d'une montre, et montre comprenant un tel dispositif.
CH708924A2 (fr) * 2013-12-05 2015-06-15 Gaeatec S Rl Dispositif et procédé de mesure de paramètres d'une montre.
CN204086223U (zh) * 2014-08-25 2015-01-07 中国电建集团北京勘测设计研究院有限公司 一种用于物探测量的点触式声波探头
CN205484197U (zh) 2016-03-30 2016-08-17 湖州市特种设备检测研究院 一种电磁超声探头
CH713980B1 (fr) * 2017-07-14 2022-01-14 Nivarox Sa Procédé et dispositif de vissage assisté par ultrasons.
CN208062827U (zh) * 2018-02-14 2018-11-06 出门问问信息科技有限公司 电子设备及充电座
EP3611575A1 (de) * 2018-08-14 2020-02-19 Invoxia Computerimplementiertes verfahren und system zur diagnose der mechanischen vorgabe einer mechanischen uhr und mechanische uhr zur durchführung des verfahrens

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Publication number Publication date
US11372375B2 (en) 2022-06-28
CN112764341B (zh) 2022-10-04
CN112764341A (zh) 2021-05-07
JP2021067676A (ja) 2021-04-30
JP6982154B2 (ja) 2021-12-17
EP3812848A1 (de) 2021-04-28
US20210116870A1 (en) 2021-04-22

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