EP4085304A1 - Armbanduhr - Google Patents
ArmbanduhrInfo
- Publication number
- EP4085304A1 EP4085304A1 EP21840863.1A EP21840863A EP4085304A1 EP 4085304 A1 EP4085304 A1 EP 4085304A1 EP 21840863 A EP21840863 A EP 21840863A EP 4085304 A1 EP4085304 A1 EP 4085304A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clock
- crystal
- clock generator
- predetermined
- oscillating
- 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.)
- Pending
Links
- 239000013078 crystal Substances 0.000 claims abstract description 338
- 229910052613 tourmaline Inorganic materials 0.000 claims description 94
- 239000011032 tourmaline Substances 0.000 claims description 94
- 229940070527 tourmaline Drugs 0.000 claims description 94
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 81
- 239000010453 quartz Substances 0.000 claims description 78
- 230000010355 oscillation Effects 0.000 claims description 63
- 239000010975 amethyst Substances 0.000 claims description 18
- 238000012937 correction Methods 0.000 claims description 15
- 108091005960 Citrine Proteins 0.000 claims description 13
- 239000011035 citrine Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000015654 memory Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 239000011034 rock crystal Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 77
- 239000000126 substance Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 230000001419 dependent effect Effects 0.000 description 5
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- 239000012080 ambient air Substances 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 244000172533 Viola sororia Species 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- JXSJBGJIGXNWCI-UHFFFAOYSA-N diethyl 2-[(dimethoxyphosphorothioyl)thio]succinate Chemical compound CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC JXSJBGJIGXNWCI-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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- 238000004544 sputter deposition Methods 0.000 description 1
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- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
- G04C3/12—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by piezoelectric means; driven by magneto-strictive means
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0069—Watchmakers' or watch-repairers' machines or tools for working materials for working with non-mechanical means, e.g. chemical, electrochemical, metallising, vapourising; with electron beams, laser beams
-
- 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
- G04D7/1257—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard wherein further adjustment devices are present
Definitions
- the invention relates to a wristwatch with a clock generator arrangement.
- the invention also relates to a method for producing such a wristwatch.
- Wristwatches with clock generator arrangements are known from the prior art, each of which includes a quartz oscillator as a clock generator.
- the quartz crystal is shaped in such a way that the predetermined oscillation frequency is standardized and is 32768 Hz.
- the oscillation frequency is then divided by two by an electronic circuit until the second cycle is reached. Due to the high frequency of the oscillating quartz, a wristwatch equipped with an oscillating quartz serving as a clock generator, which is also known as a quartz wristwatch, is significantly more accurate than a mechanical watch.
- a clock generator arrangement with an oscillating crystal serving as a clock generator offers the further advantage that the clock generator arrangement takes up little space in the clock.
- the quartz watch has a high power reserve and therefore does not have to be adjusted often.
- an oscillating crystal can be produced synthetically at low cost.
- quartz wristwatches are common worldwide.
- an otherwise expensive and high-quality quartz wristwatch can be considered "mass-produced" by watch enthusiasts.
- the halving of the oscillating frequency in order to get to the second cycle, only works with standardized oscillating crystals. With other types of oscillating crystals, the effort would be enormous to trim them individually to a fundamental frequency that can be divided by 2.
- the wristwatch includes a first timer, a pulse counter and an output device.
- the first clock generator includes a piezoelectric resonant crystal and is set up to generate a clock signal.
- the pulse counter is set up to count a clock signal from the first clock generator.
- the output device is set up to output a useful signal when a count value of the counted clock signal of the first clock generator is equal to a predetermined count value.
- the pulse counter is preferably reset.
- the comparison of the count value of the counted clock signal with the predetermined count value can advantageously be carried out by means of a comparator which can be part of the pulse counter or the output device.
- the predetermined count may preferably be stored in a memory of the clock generator arrangement.
- the present invention enables a wristwatch having a clock assembly capable of providing an accurate useful signal.
- a wristwatch having a clock assembly capable of providing an accurate useful signal.
- the proposed clock arrangement and in particular the use of a pulse counter for counting the clock signal of the first clock offers the particular advantage that not only piezoelectric oscillating crystals with a standardized oscillating frequency can be used, but any piezoelectric oscillating crystal. This makes it possible to use individualized frequencies which, under certain circumstances, also occur once, quite specifically for a single oscillating crystal.
- a natural oscillating crystal that cannot be standardized or is difficult to standardize can also be used as the piezoelectric oscillating crystal of the first clock generator, the chemical composition, purity or other factors of which almost always vary slightly, so that the oscillating frequency in the crystal always varies individually.
- a natural tourmaline, a natural amethyst or other varieties of quartz such as citrine, etc., or a natural Swiss rock crystal can be used. It is also possible to dispense with the shaping of each individual natural oscillating crystal until it has reached the desired oscillating frequency of 32678 Hz, which would otherwise be impossible due to the not so homogeneous chemical composition of the crystal Oscillating crystal would be very expensive.
- the oscillating frequency of a natural oscillating crystal usually varies somewhat, depending on the chemical composition of the oscillating crystal, it is hardly possible to simply produce a standardized geometry of the oscillating crystal and thus hit the exact oscillation frequency of 32678 Hz.
- the geometry of the natural oscillating crystal would therefore have to vary slightly for each individual oscillating crystal of the same type/material (e.g. tourmaline) in order to arrive at a clear oscillation frequency of 32678 Hz or at another frequency, which can be reduced to the frequency of 1 Hz can break down.
- this problem is cleverly solved by the use of the pulse counter in the clock assembly of the proposed wristwatch.
- non-randomly variable frequencies can also be processed by means of the pulse counter of the proposed wristwatch, such as the Chinese "lucky number" of 8,888 or 88,888, which can then be obtained in quantities via the geometry of a synthetic quartz.
- the wristwatch according to the present invention can be individualized, which gives the wristwatch a high-quality flair.
- the wristwatch according to the present invention has the advantages of compact structure and accuracy of a conventional quartz wristwatch using a synthetic quartz crystal.
- the predetermined count value is advantageously characteristic of the particular piezoelectric crystal resonator, i.e. in particular the particular shape and chemical composition of the crystal crystal provided in the clock assembly of the wristwatch.
- Each oscillating crystal therefore has an individually predetermined count value which is programmed into the comparator when the clock generator arrangement is manufactured.
- the piezoelectric oscillating crystal can advantageously be made to oscillate and the clock signal generated by the oscillation of the oscillating crystal can be counted, e.g. with a frequency counter (counting frequency meter) before all components of the clock generator arrangement are Manufacturing the clock assembly are assembled or set up.
- the predetermined count value is advantageously characteristic of the specific piezoelectric vibrating crystal, ie in particular for the specific shape and the specific chemical composition of the oscillating crystal provided in the clock generator arrangement at a predetermined temperature of the clock generator arrangement or the oscillating crystal or a predetermined temperature of the surroundings of the clock generator arrangement or the oscillating crystal.
- the predetermined temperature can advantageously be selected as the temperature at which the clock generator arrangement or the wristwatch will be operated in normal operation.
- a temperature substantially corresponding to a mixed temperature of a normal skin temperature of a healthy person and the temperature of the ambient air of the wristwatch can be preferably selected as the predetermined temperature.
- the first clock generator preferably also comprises electrodes which are arranged on the piezoelectric oscillating crystal or connected to the piezoelectric oscillating crystal.
- oscillating crystal is advantageously not understood to mean a raw crystal, but a faceted crystal, in particular a crystal that has been ground or otherwise processed, e.g. etched.
- an oscillating crystal made of a specific material means an oscillating crystal whose highest proportion is made of this material, particularly preferably an oscillating crystal that is made entirely of this material.
- a tourmaline oscillating crystal means an oscillating crystal whose highest proportion is made of tourmaline, particularly preferably an oscillating crystal that is made entirely of tourmaline.
- the clock arrangement further comprises a second clock comprising a piezoelectric resonant crystal.
- the second clock generator is set up to generate a clock signal.
- the output device is set up to compare the clock signal of the second clock generator with the clock signal of the first clock generator. The accuracy of the clock signal of the first clock generator can be checked by comparing the clock signal of the second clock generator with the clock signal of the first clock generator.
- the second clock generator is set up to generate the clock signal at predetermined time intervals, for example every 15 minutes.
- the second clock is only operated at predetermined time intervals.
- the oscillating crystal of the second clock generator is made to oscillate only at predetermined time intervals.
- the comparison between the clock signal of the first clock and the Clock signal of the second clock take place at predetermined time intervals. This can save electricity.
- the second clock generator can preferably be switched on and off via a further pulse counter with a comparator (second comparator), which is controlled by the output signal of the first comparator and counts it up. If the first comparator z. B. delivers a second signal, then you can let this additional pulse counter count up to 1024 (10 bit) (approx. 17 minutes) and you don't even have to reset it. If this further pulse counter is equipped with more than one comparator, then the second clock generator can be switched on and off for different time intervals (e.g. every 17 minutes with an on-time of 4 s). It is also possible to divide the second signal (1 Hz signal) with a frequency divider, whereby the period duration (here: 1 s) can be increased even further by doubling it.
- a comparator second comparator
- the second clock generator With a 10-bit divider, you can then arrive at 1024 s or 17 minutes and control the second clock generator accordingly. If this frequency divider has exactly 10 bits and is not stopped, then it starts again and again, i. H. every 17 minutes the second clock is switched on. If the second clock is only driven with the most significant bit, then it will run for 8.5 minutes and then be switched off again. However, a less significant bit can also be used: the least significant bit has a period of 2 s, i.e. it is switched on for 1 s and switched off for 1 s. For example, the third lowest bit (period 8s) is 4s on and 4s off. These two bits can be interconnected in such a way that the second clock is switched on by the rising edge of the most significant bit and switched off again by the falling edge of the third least significant bit. Then it runs for four seconds every 17 minutes.
- the second clock generator is set up to continuously generate a clock signal (second clock signal).
- the output device is preferably set up to output the useful signal when a count of the counted current clock signal is equal to the predetermined count, only when a deviation between the clock signal of the second clock generator and the clock signal of the first clock generator is less than a predetermined deviation.
- the useful signal is output based on the clock signal of the first clock generator only if a deviation between the clock signal of the second clock signal and the current clock signal is less than a predetermined deviation.
- the second clock generator is a substitute clock generator and its clock signal is a substitute clock signal. If a deviation between the clock signal of the second clock generator and the clock signal of the first clock generator is greater than is the predetermined deviation, the output device is advantageously set up to output a useful signal based on the substitute clock signal from the substitute clock generator instead of based on the clock signal from the first clock generator. In other words, in the event of a greater deviation between the clock signal of the second clock and the clock signal of the first clock than the predetermined deviation, the second clock advantageously assumes the role of clock of the clock arrangement of the wristwatch.
- the clock generator arrangement outputs an accurate useful signal even if there are interference factors which affect the accuracy of the first clock generator or cause the clock signal of the first clock signal to deviate from the clock signal of the second clock generator.
- a disruptive factor can be, for example, the temperature at which the clock generator arrangement is operated. If the temperature at which the wristwatch or the clock generator arrangement is operated deviates from the temperature at which the predetermined count value of the clock signal of the first clock generator was determined, an oscillating crystal for the first clock generator, whose oscillation frequency can be temperature-dependent, may result in a deviation of the clock signal of the first clock from that at the predetermined temperature.
- the second clock generator is advantageously formed or selected in such a way that it can generate a clock signal that is constant or independent of interference factors or less sensitive to interference factors compared to the first clock generator, so that this clock signal can be used as a substitute clock signal of the clock generator arrangement.
- the useful signal based on the clock signal of the second clock generator can be generated by means of a frequency divider.
- the frequency divider can be designed as part of the output device or as a separate element.
- the output device can advantageously be set up to correct the predetermined count value using a predetermined correction factor .
- the output device is also set up to output the useful signal when the count value of the clock signal of the first clock generator is equal to the corrected predetermined count value.
- the accuracy of a frequency-controlled watch with a piezoelectric oscillating crystal as the clock generator depends primarily on the piezoelectric oscillating crystal being exposed to exactly the same conditions and thus having an absolutely constant oscillating frequency.
- the condition of temperature can cause the greatest change in oscillation frequency trigger, which means that a temperature correction in the watch is the main control mechanism that ensures the accuracy of the watch.
- the predetermined correction factor can preferably be based on a predetermined temperature dependency of the oscillation frequency of the piezoelectric vibrating crystal of the first timer, a predetermined temperature dependency of the oscillation frequency of the piezoelectric vibrating crystal of the second timer and a difference between a count value of the counted Clock signal of the first clock generator and a count value of the counted clock signal of the second clock generator.
- the oscillation frequency of the piezoelectric oscillating crystal of the first clock generator advantageously has a different temperature dependence than the oscillation frequency of the piezoelectric oscillating crystal of the second clock generator.
- the piezoelectric vibrating crystal of the first clock generator has a different vibration behavior as a function of temperature than the piezoelectric vibrating crystal of the second clock generator.
- This can be achieved in particular by the piezoelectric oscillating crystal of the first clock generator and the piezoelectric oscillating crystal of the second clock generator being made of different materials and/or having different geometries and/or differing from one another by at least one property that influences the vibration behavior in dependent on the temperature.
- a property can be, for example, the type of vibration, the chemical composition or the purity of the piezoelectric oscillating crystals.
- two tourmalines of different geometry or mode of vibration, or a tourmaline and an amethyst can be used as the resonant crystals of the first clock and the second clock.
- the temperature dependencies of the first clock generator and the second clock generator should advantageously be present. These are advantageously created with the aid of different frequency measurements at different temperatures before the wristwatch is created. Then, in particular, a curve derived from this is calculated, which represents a specific oscillation frequency deviation for each temperature. If, for example, there is a temperature deviation from a predetermined temperature (specified standard temperature) of -5° C., the oscillation frequency deviation is one value, with the oscillation frequency deviation having a different value for example at a temperature deviation of -8° C.
- the predetermined count value can be corrected in such a way that it is ensured that the useful signal always has the same frequency regardless of potential temperature fluctuations, e.g. B. 1 Hz.
- Tourmaline can be an example of such an oscillating crystal.
- the tourmaline is an individual oscillating crystal in which the temperature dependence of the oscillating frequency is not necessarily subject to a clear standard. This means that the change in frequency in one tourmaline crystal can be different than another tourmaline crystal with the same geometry. This deviation hardly ever occurs with a quartz wristwatch, since the oscillating quartzes used for such watches are usually synthetically manufactured and the temperature dependence of the oscillating frequency is therefore approximately the same for all oscillating quartzes with the same geometry. Nevertheless, quartz also shows a temperature dependency of the oscillation frequency, which can be recorded in a corresponding curve. A correction of the predetermined count value can thus result in an increase in the accuracy of the wristwatch even in the case of an oscillating crystal designed as a quartz crystal for the first clock generator.
- the resonant crystal of the second clock does not have to be a quartz crystal in order to achieve the correction of the predetermined count value.
- the comparison curve of the two vibrating crystals described above does not have to be created from the comparison of the piezoelectric vibrating crystal of the first clock generator with a crystal vibrator, but it can just as well be created from the comparison of the piezoelectric vibrating crystal of the first clock generator with another piezoelectric vibrating crystal.
- the oscillating crystals of both the first clock and the second clock can be made of tourmaline.
- both oscillating crystals must then be measured with regard to the dependence of their oscillating frequency on the temperature, while the temperature-deviation-frequency curve is usually either already known for an oscillating quartz, or for a whole series of wristwatches only once for an oscillating quartz must be created since one can assume that this is analogous to all synthetically manufactured quartz crystals.
- the clock arrangement may include a temperature sensor.
- the temperature sensor is set up to detect a temperature of the first clock generator and/or an area surrounding the first clock generator and to compare this with a predetermined temperature.
- the output device is advantageously arranged to correct the predetermined count value based on the detected temperature. Furthermore, the output device is set up to output the useful signal based on the first clock generator if the counter value of the counted clock signal of the first clock generator is equal to the corrected, predetermined count value.
- piezoelectric oscillating crystals made of materials, e.g. types of tourmaline, can also be used in the clock generator arrangement, the oscillation frequency of which is temperature-dependent.
- the wristwatch can advantageously also have a heating device.
- the heating device is set up to heat the first clock generator to the predetermined temperature in the event of a temperature deviation between the temperature of the first clock generator and/or an area surrounding the first clock generator and the predetermined temperature that is greater than a predetermined temperature deviation.
- a temperature deviation between the temperature of the first clock generator and/or an area surrounding the first clock generator and the predetermined temperature can also be detected here instead of using the temperature sensor using the mechanism described above of comparing the oscillation frequencies of the oscillating crystals of the first clock generator and the second clock generator with one another.
- the current temperature of the first clock generator and/or its surroundings can be determined from the difference between the oscillation frequencies of the two oscillating crystals.
- the difference between the current temperature and the predetermined temperature, which has to be eliminated by the heating device, is then also known.
- Preventing a frequency deviation of the clock signal of the first clock due to a temperature deviation of the temperature of the first clock and/or an environment of the first clock from the predetermined temperature by means of one of the correction mechanisms described can be particularly advantageous since the wristwatch is worn on the wrist of a person who but not always a constant temperature having.
- a wristwatch having a clock assembly with a tourmaline first clock whose oscillation frequency is dependent on temperature would not be clock accurate without the proposed temperature correction mechanism. If, for example, the wearer of the wristwatch had a slightly higher temperature (eg 38°C instead of 36°C), the wristwatch could lose, for example, 8 seconds per day without the temperature mechanism described above. The accuracy of the watch would also be affected if the watch is not always worn.
- the clock arrangement further comprises a third clock.
- the third clock generator includes a piezoelectric resonant crystal and is set up to generate a clock signal.
- the output device is set up to compare the clock signal of the third clock generator, the clock signal of the second clock generator and the clock signal of the first clock generator with one another.
- the third clock generator for example a synthetic standardized quartz crystal, if oscillation frequency deviations are measured between all three oscillating crystals, deviations can also be determined which cannot be attributed to a temperature deviation but to aging of the oscillating crystals. This means that these can also be age-related Frequency deviations are corrected.
- aging is meant an oscillation frequency deviation that occurs over time due to the intrusion of foreign atoms into the crystals or other circumstances related to time.
- the first clock is the primary clock of the wristwatch.
- the second clock and/or the third clock can/can serve as a backup clock if it is determined that the clock accuracy of the first clock is not high enough and/or are to be understood as a control clock so that the accuracy of the first clock can be checked and can be corrected if necessary.
- the wristwatch also includes a drive device and a mechanical watch display device.
- the drive device is set up to receive the useful signal output by the output device of the clock generator arrangement and, in response thereto, to move the mechanical clock display device to display the clock.
- a wristwatch can be referred to as a wristwatch with a mechanical movement within the scope of the invention.
- the drive device preferably comprises a drive element and in particular also a translation device which connects the drive element to the mechanical timepiece display device and translates a movement of the drive element into a movement of the mechanical timepiece display device.
- the drive element can preferably be designed as an electric stepping motor, in particular as a Lavet stepping motor, or as another type of electromechanical drive.
- the translation device can preferably be designed as a wheel train. Alternatively, the drive element can be connected directly to the mechanical clock display device, ie without the interposition of a transmission device.
- the mechanical clock display device can preferably have at least one pointer and/or a dial, in particular with at least one time marking.
- the drive device can be set up to move or rotate the at least one pointer and/or the dial of the clock display device.
- the wristwatch can be designed as an electronic wristwatch.
- the wristwatch includes an electronic circuit and an electronic clock display device.
- the electronic circuit is set up to receive the useful signal output by the output device of the clock generator arrangement and, in response thereto, to output a signal to the clock display device for displaying the wristwatch.
- the piezoelectric resonant crystal of the first clock and/or the second clock and/or the third clock can be a natural or synthetic crystal.
- the piezoelectric resonant crystal of the first clock and/or the second clock and/or the third clock can be a natural tourmaline, citrine, amethyst, Swiss rock crystal or a synthetic quartz crystal.
- citrine and amethyst are color variants of (natural) quartz. Specifically, citrine is the yellow colored variety and amethyst is the violet variety of quartz.
- the piezoelectric crystal of the first clock and/or the second clock and/or the third clock is a quartz crystal
- the piezoelectric crystal is preferably formed as a two-pronged fork vibrator.
- the piezoelectric oscillating crystal can also have the shape of a small plate.
- the piezoelectric oscillating crystal can also be in the form of a quartz plate.
- the quartz plate is preferably round. However, it is also possible for the quartz plate to be rectangular.
- the oscillating frequency of the piezoelectric oscillating crystal of the first clock generator is 8888 Hz or 88888 Hz.
- piezoelectric oscillating crystal of the first clock generator preferably a quartz oscillating crystal, in particular a synthetic quartz oscillating crystal.
- the output device is set up to output the useful signal at a frequency of 8 Hz if the count value of the counted clock signal from the first clock generator is equal to a predetermined count value.
- an oscillating frequency of the piezoelectric oscillating crystal in other words the frequency of the clock signal or the predetermined counter value is set in such a way that the useful signal has the frequency of 8 Hz.
- the piezoelectric oscillating crystal of the first clock generator can preferably be a quartz oscillating crystal, in particular a synthetic quartz oscillating crystal.
- the oscillating frequency of the piezoelectric oscillating crystal of the first clock generator is 8888 Hz or 88888 Hz and the output device is set up to output the useful signal with a frequency of 8 Hz
- the predetermined count value is set to 1111 or 11111.
- a useful signal is thus output by the output device when the pulse counter counts 1111 or 11111 pulses, i.e. when the count value of the counted clock signal of the first clock generator is equal to 1111 or 11111.
- the frequency of the clock signal is 8888 Hz or 88888 Hz and the frequency of the useful signal is 8 Hz.
- the piezoelectric crystal of the first clock is 8888 Hz and the piezoelectric crystal is a quartz crystal, particularly a synthetic quartz crystal, and is formed as a fork vibrator having two prongs
- the length of each prong is preferably 3.02127 mm
- the Thickness of each prong preferably 0.3mm
- the depth of each prong would be variable such as 0.6mm.
- the piezoelectric crystal of the first clock is 88888 Hz and the piezoelectric crystal is a quartz crystal, particularly a synthetic quartz crystal, and is formed as a fork vibrator having two prongs
- the length of each prong is preferably 0.55155 mm
- the Thickness of each prong preferably 0.1mm and depth of each prong either 0.3mm or other practical value as depth is variable and does not affect frequency.
- the length of a respective tine corresponds in particular to the dimension of the respective tine in a direction parallel or substantially parallel to the Y crystal axis, the thickness of a respective tine to the dimension of the respective tine in a direction parallel or substantially parallel to the X crystal axis and the depth a respective tine of the dimension of the respective tine in a direction parallel or substantially parallel to the Z crystal axis the piezoelectric crystal resonator of the first clock generator, namely the quartz crystal crystal.
- “Essentially parallel” means in particular an angle of up to 20 degrees, preferably 10 degrees, further preferably 5 degrees, to the respective axis.
- the Z-crystal axis corresponds to a longitudinal crystallographic axis of the raw quartz crystal or the starting synthetic quartz from which the resonating quartz crystal is formed.
- the longitudinal axis is the axis representing the direction of growth or the direction of crystallization of the quartz.
- the crystal structure of quartz is hexagonally symmetrical about the longitudinal axis.
- the Z crystal axis is also understood as the optic axis of quartz.
- the X-crystal axis is understood as that axis which, on the one hand, runs perpendicular to the Z-crystal axis (longitudinal axis) and, in relation to the hexagonal cross-section of the quartz crystal, runs through two opposite edges (of the 6 existing edges) of the quartz crystal.
- the Y-crystal axis is understood to be that axis which runs parallel to the normal vector of any two opposing ones of the six quartz faces which run parallel to the longitudinal axis of the quartz.
- the crystal has three possible Y crystal axes.
- the piezoelectric oscillating crystal of the first clock generator and/or the second clock generator and/or the third clock generator can preferably be a tourmaline oscillating crystal and have the shape of a small plate, in particular a round small plate.
- This form is particularly advantageous for the tourmaline oscillating crystal, since a raw tourmaline crystal is generally not absolutely pure and homogeneous like, for example, a synthetic raw quartz crystal, from which a quartz oscillating crystal is preferably formed as a fork oscillator.
- the tourmaline plate should not be very large. This reduces the likelihood that there will be a defect in the tourmaline crystal that will cause problems over time.
- the length of one side of the plate is between 2.9 mm and 3.1 mm, in particular 3 mm.
- the piezoelectric oscillating crystal is in the form of a round plate, it can be advantageous if the diameter of the round plate is between 2.9 mm and 3.1 mm, in particular 3 mm.
- a normal vector of a main surface of the respective lamina is in particular parallel to the longitudinal crystal axis of the corresponding tourmaline oscillating crystal or in inclined at an angle of 45° to the longitudinal crystal axis of the corresponding tourmaline oscillating crystal.
- the piezoelectric oscillating crystal of the first clock and/or the second clock and/or the third clock can be an amethyst oscillating crystal or a citrine oscillating crystal and have the shape of a plate, in particular a round plate.
- a main surface of the plate is parallel to a plane defined by the Z-crystal axis and the Y-crystal axis or by the Z-crystal axis and the X-crystal axis of the piezoelectric vibrating crystal.
- the Z-crystal axis corresponds to a longitudinal crystallographic axis of the raw crystal from which the piezoelectric vibrating crystal is formed.
- platelet means in particular a disc-shaped element.
- a small plate can also be referred to as a disk.
- the main surface corresponds to a flat side of the plate.
- the crystal axis of the piezoelectric oscillating crystal is understood to mean in particular an axis of the crystal lattice of the piezoelectric oscillating crystal.
- the crystal axis advantageously corresponds to a crystallographic axis of a raw crystal from which the piezoelectric oscillating crystal is formed.
- a further aspect of the present invention relates to a method for producing a wristwatch with a clock arrangement, in particular a wristwatch with a clock arrangement as described above.
- the procedure includes the following steps:
- a first clock generator which includes a piezoelectric oscillating crystal with a predetermined oscillation frequency and is set up to generate a clock signal
- the method for manufacturing the wristwatch preferably includes the steps of providing a drive device, i.e. a drive element and optionally a transmission device, providing a power supply device, e.g. a button battery and/or a rechargeable battery and/or a continuous power generator (e.g. thermogenerator), and/or or providing a mechanical timepiece display device.
- a drive device i.e. a drive element and optionally a transmission device
- a power supply device e.g. a button battery and/or a rechargeable battery and/or a continuous power generator (e.g. thermogenerator), and/or or providing a mechanical timepiece display device.
- the drive element can be designed in particular as an electric stepping motor, preferably a Lavet stepping motor, and the transmission device can be designed as a wheel train.
- the gear train is advantageously set up to convert the frequency of the useful signal at which the electric stepping motor moves one step further into the movement of the mechanical clock display device.
- the frequency of the useful signal can be translated in such a way that the second hand rotates 6° per second, the minute hand rotates 6° per minute and the hour hand rotates 30° per hour.
- a crown a dial, a watch glass, movement switches, etc.
- other components such as a crown, a dial, a watch glass, movement switches, etc. can be provided and installed in a watch case or attached to the watch case in addition to the first clock generator, the pulse counter and the output device to manufacture the watch.
- the step of providing the first clock with the piezoelectric vibrating crystal having the predetermined vibration frequency comprises the steps of providing any piezoelectric vibrating crystal, generating vibration of the piezoelectric vibrating crystal, and measuring the vibrating piezoelectric vibrating crystal using a frequency counter to determine its vibration frequency .
- the measured oscillation frequency corresponds to the predetermined oscillation frequency.
- any piezoelectric vibrating crystal can be used, or a raw crystal can be arbitrarily processed to produce a piezoelectric vibrating crystal, using its measured vibration frequency as the predetermined vibration frequency, from which the predetermined count value is derived.
- the step of providing the first clock generator with the piezoelectric oscillating crystal, which has the predetermined oscillating frequency comprises the steps of selecting an oscillating frequency as the predetermined oscillating frequency and shaping, in particular grinding or another shaping process such as etching, or a fine correction by material removal by means of a laser, a piezoelectric oscillating crystal from a raw crystal in such a way that the oscillating crystal has the predetermined oscillation frequency.
- a piezoelectric oscillating crystal is formed in an advantageous manner so that in its final form it has a deliberately selected and not an arbitrary oscillating frequency.
- the wristwatch can be equipped with a first clock having a piezoelectric oscillating crystal with an oscillating frequency individualized according to the desire of the wearer of the wristwatch.
- the date of birth of the wearer of the wristwatch can be chosen as the oscillation frequency of the piezoelectric resonant crystal of the first clock.
- the frequency of 8888 Hz or 88888 Hz is selected as the predetermined oscillation frequency of the piezoelectric vibrating crystal. That is, the piezoelectric vibrating crystal is formed so that its vibrating frequency is 8888 Hz or 88888 Hz.
- the predetermined oscillation frequency and/or the predetermined count value is/are selected in such a way that the output device is set up to output the useful signal at a frequency of 8 Hz if the count value of the counted clock signal of the first clock generator matches a predetermined count value.
- the predetermined count value is set to 1111 or 11111, respectively.
- a quartz resonating crystal is preferably designed as a fork oscillator with two prongs.
- the fork oscillator is cut from a quartz disc of a raw quartz crystal or a synthetic quartz crystal.
- the quartz disc is cut out of the raw quartz crystal or the synthetic quartz crystal at an angle of 90° to the crystallographic longitudinal axis, or at an angle which essentially corresponds to this angle.
- the fork oscillator is provided with electrodes and contacted.
- the fork oscillator provided with the electrodes is inserted into a protective cover, in particular a vacuum bell jar, in order to prevent foreign atoms from the ambient air from migrating through and to facilitate free oscillation.
- a protective cover in particular a vacuum bell jar
- an oscillator circuit is set up, which causes the fork oscillator to oscillate at the predetermined frequency of 8888 Hz or 88888 Hz.
- the The oscillator circuit and the fork oscillator then form the first clock generator.
- a pulse counter is provided, which breaks down the frequency of 8,888 Hz or 88,888 Hz of the clock signal to the desired frequency of 8 Hz.
- the oscillator circuit, which stimulates the fork oscillator to oscillate, and the pulse counter are preferably located on one and the same microchip. However, these two units could also be provided separately from one another.
- the step of providing the first clock and/or the second clock and/or the third clock comprises the following steps:
- an oscillator circuit is advantageously an electronic circuit.
- the respective clock is provided as follows: First, the tourmaline oscillating crystal is provided in the form of a plate. In other words, a tourmaline platelet is formed.
- a rectangular platelet can be cut out of a rough tourmaline crystal at an angle of 90° or 45° to the crystallographic longitudinal axis of the rough tourmaline crystal, or at another optimal inclination to the longitudinal axis, which corresponds to the special chemical composition of the particular tourmaline variant used .
- the rectangular plate can be ground preferably circular. The two main surfaces of the plate are advantageously polished.
- the tourmaline has a trigonal structure.
- tourmaline does not crystallize with a hexagonal crystal cross-section like quartz, but rather trigonally, i.e. in a triangular shape, with the sides of the triangle usually being somewhat rounded.
- the crystallographic longitudinal axis described above can also be called the optical axis.
- This axis is known as the Z-axis or often also the C-axis, but is referred to as the L-axis within the scope of the invention.
- the longitudinal axis is the axis representing the direction of growth or the direction of crystallization of tourmaline. This axis is polar.
- TA Triangle - Angle
- TS axis axis of the raw tourmaline crystal that is perpendicular to the crystallographic longitudinal axis and runs essentially parallel to the basic orientation of one of the three facets of the raw tourmaline crystal.
- the raw tourmaline crystal can be described by a structural triangle, the sides of which are assigned to or follow the facets of the raw tourmaline crystal.
- the crystallographic longitudinal axis is perpendicular to the plane of the structural triangle.
- the TA axis is perpendicular to the crystallographic longitudinal axis and passes through an angle subtended between any two of the three sides of the structural triangle.
- the TS axis is perpendicular to the crystallographic longitudinal axis and parallel to one of the three sides of the structural triangle.
- the tourmaline crystal has the following piezoelectric polar axes: an "L” axis, three possible “TS” axes and three possible “TA” axes.
- a normal vector of a main surface of the respective platelet is in particular parallel to the longitudinal crystal axis of the corresponding tourmaline oscillating crystal or at an angle of 45° to the longitudinal crystal axis of the corresponding tourmaline oscillating crystal inclined, or at a particular optimal angle, depending on the specific chemical composition of the particular type of tourmaline used.
- the plate-shaped tourmaline resonating crystal exhibits high piezoelectric activity.
- one edge of the platelet is parallel to the TS axis or TA axis, with the other edge inclined at 45° to the crystallographic longitudinal axis of the raw tourmaline crystal.
- the oscillation frequency of the tourmaline plate is measured with a frequency meter. This determines the frequency at which the tourmaline oscillates with a large amplitude.
- the tourmaline plate is placed between two metal plates, which are connected to the frequency meter via two wires. It is first determined whether the tourmaline platelet has a frequency with a high amplitude, which is at the same time far enough away from any "spurious frequencies". If this is the case, it is determined that the tourmaline platelet can be used as an oscillating crystal. Then the tourmaline platelet is provided with electrodes, preferably by vapor deposition (or sputtering process) of gold electrodes. Any other possible method of applying the electrodes is also applicable.
- the swinging tourmaline is now fixed and installed in a holder that has as little damping as possible and prevents the free swinging of the tourmaline as little as possible.
- the center of the tourmaline platelet is often the best fixing point, since, depending on the type of vibration, a vibration node may occur here at which the vibration may have a lower amplitude and accordingly experience less damping through fixing.
- the small tourmaline plate is then embedded in a protective cover, in particular in a vacuum bell jar, in order to prevent foreign atoms from migrating through and to enable air-free oscillation.
- the tourmaline disc which is provided with electrodes and embedded in the protective cover, i.e. the tourmaline oscillating crystal, is measured again, whereby the main frequency is determined.
- This determined main frequency is determined as the oscillating frequency of the tourmaline oscillating crystal.
- an oscillator circuit is provided which is set up to cause the tourmaline oscillating crystal to oscillate at the oscillation frequency found.
- the piezoelectric oscillating crystal of the first clock and/or the second clock and/or the third clock is an amethyst oscillating crystal or a citrine oscillating crystal and has the shape of a small plate, in particular a round small plate
- the provision of the respective clock is preferably first the amethyst oscillating crystal or citrine oscillating crystal provided in the form of a plate. In other words, an amethyst plate or citrine plate is formed.
- the platelet shape is particularly advantageous, since natural mineral deposits, twin lines or possible structural irregularities in the amethyst raw crystal result in frequencies and secondary frequencies that are not foreseeable or calculable. Furthermore, an amethyst loses its color when exposed to UV radiation. This means that crystal lattice shifts caused by natural irradiation can occur. Thus, for an amethyst crystal, the platelet shape may prove more appropriate as opposed to the two-pronged fork shape.
- a platelet is cut out of a raw amethyst crystal or a raw citrine crystal. Specifically, this is done such that a major surface of the plate is parallel to a plane defined by the Z-crystal axis and the Y-crystal axis or by the Z-crystal axis and the X-crystal axis of the piezoelectric vibrating crystal.
- the remaining steps for providing each clock comprising an amethyst crystal resonator or citrine wafer-shaped crystal resonator are like the corresponding steps for providing each clock comprising a tourmaline wafer-shaped crystal resonator.
- the predetermined oscillation frequency and/or the predetermined counter value is/are preferably set and/or a drive device of the wristwatch set up in such a way that a second hand of a mechanical clock display device of the wristwatch can be moved at a frequency higher than 1 Hz. For example, if a frequency of 8 Hz is used, then the second hand of the wristwatch does not make a small jump every second, but glides smoothly across the dial. This improves the main visual impression of the wristwatch, as the seconds hand jump is eliminated.
- a method for operating a wristwatch with a clock generator arrangement advantageously comprises the following steps:
- a first clock generator which includes a piezoelectric resonant crystal with an oscillator circuit, • counting the clock signal of the first clock using a pulse counter, and
- piezoelectric oscillating crystal of the first clock generator and/or the second clock generator and/or the third clock generator is/are also independently operable.
- FIG. 1 shows a simplified plan view of a wristwatch according to the invention with a clock arrangement according to an embodiment of the present invention
- FIG. 2 shows a simplified schematic representation of the clock arrangement from FIG. 1,
- FIG. 3 is a simplified schematic perspective view of a raw crystal from which to form a piezoelectric resonant crystal of a first clock of the clock assembly of FIG. 2, and
- FIG. 4 shows a simplified schematic perspective view of a piezoelectric resonant crystal of a first clock generator of a clock generator arrangement according to a second embodiment of the present invention.
- a wristwatch 100 according to the invention with a clock generator arrangement 10 according to an exemplary embodiment of the present invention is described in detail below with reference to FIGS.
- the wristwatch 100 has a housing 11 and a watch glass 15 arranged therein.
- the wristwatch 100 also has a dial 12 and three hands 13 for displaying the hours, minutes and seconds.
- the pointers 13 are parts of a clock display device 102.
- the wristwatch 100 also has two connectors 14 for a bracelet.
- the clock arrangement 10 ensures that a useful signal is generated, which can be received by a drive device 101 for moving the pointer 13.
- the useful signal can also be referred to as a useful clock signal. How the useful signal is generated is explained in more detail later with reference to FIG.
- the drive device 101 comprises a drive element which can be directly connected to the mechanical watch display device 102 .
- the drive device 101 can be designed as a wheel train in addition to the drive element Include translation means that connects the drive member to the mechanical timepiece display device 102 and translates movement of the drive member into movement of the mechanical timepiece display device 102.
- the drive element can be designed as an electric stepping motor, in particular as a Lavet stepping motor, or as another type of electromechanical drive.
- the clock assembly 10, the driving device 101 and the mechanical clock display device 102 are arranged in the housing 11 under the dial 12.
- FIG. 1 The clock assembly 10, the driving device 101 and the mechanical clock display device 102 are arranged in the housing 11 under the dial 12.
- the clock generator arrangement 10 is shown in more detail in FIG.
- the clock arrangement 10 has a first clock i , a pulse counter 2 and an output device 3 .
- the first clock generator 1 comprises a piezoelectric oscillating crystal made of tourmaline (also: tourmaline oscillating crystal) and is set up to generate a clock signal.
- the piezoelectric oscillating crystal of the first clock generator 1 can be made to oscillate at its oscillating frequency (resonance frequency) in an oscillator circuit due to its piezoelectric properties.
- a power supply device 103 is provided to supply the timer 1 with electric power.
- the power supply device 103 can in particular have a battery and/or a rechargeable battery and/or a continuous power generator.
- the pulse counter 2 is set up to count a clock signal from the first clock generator 1 while the wristwatch 100 is in operation. This determines a count of the counted clock signal of the first clock generator 1, which is compared in particular by means of the output device 3 with a predetermined count. The predetermined count value is stored in a memory 9 of the output device 3 .
- the output device 3 is also set up to output a useful signal based on the result of the comparison or if the count value of the counted clock signal of the first clock generator 1 is equal to the predetermined count value.
- the useful signal which is transmitted to the drive device 101, can be a one-second cycle or only a fraction of a second.
- the pointer 13 which is responsible for displaying the seconds, does not move forward every second, but a specific fraction of the second.
- the useful signal is not sent to the drive device 101 every second, ie at a frequency of 1 Hz, but more frequently, ie every half a second or more quarter of a second or more.
- the drive element and/or the transmission device of the drive device 101 which drives the hand movement, is/are designed in such a way that the second hand 13 carries out its movement more or less invisibly, in that the useful signal does not occur 60 times per minute, but a correspondingly higher one number of times.
- the pulse counter 2 the setting of the interval of movement of the second hand 13 can be freely selected. Only the drive element and/or the translation device of the drive device 101 must be matched to the timing of the useful signal.
- Clock generator arrangement 10 also includes a second clock generator 4, which in this exemplary embodiment has a piezoelectric oscillating crystal made of quartz and is set up to generate a clock signal.
- the piezoelectric vibrating crystal of the second clock generator 4 is a synthetic quartz crystal.
- the piezoelectric oscillating crystal of the first clock generator 1 can be made to oscillate at its oscillating frequency (resonance frequency) in an oscillator circuit due to its piezoelectric properties.
- the oscillating crystal of the second clock generator 4 can also be made to oscillate by its oscillator circuit.
- the power supply device 103 can supply both the first clock generator and the second clock generator 4 with electrical power.
- the output device 3 is set up to compare the clock signal from the second clock generator 4 with the clock signal from the first clock generator 1 .
- the accuracy of the clock signal of the first clock generator 1 can be checked by this comparison process.
- the second clock generator 4 is set up to generate its clock signal only at predetermined time intervals, e.g. every 15 minutes. That is, the second clock 4 is oscillated only at predetermined time intervals.
- the comparison between the clock signal of the first clock generator 1 and the clock signal of the second clock generator 4 only takes place at predetermined time intervals.
- the quartz oscillating crystal of the second clock generator 4 is preferably designed in such a way that it has an oscillating frequency of 32768 Hz.
- the advantage of a quartz oscillating crystal is that its oscillation frequency can essentially be regarded as independent of parameters such as the temperature of the quartz oscillating crystal or its environment.
- the clock generator arrangement 10 also has a frequency divider 6 which is set up to divide the oscillation frequency of the quartz oscillator crystal 15 times, 14 times, 13 times times or 12 times in order to arrive at a frequency of 1 Hz, 2 Hz, 4 Hz or 8 Hz, depending on whether the useful signal is a one-second cycle or a corresponding fraction of a second.
- a frequency divider 6 which is set up to divide the oscillation frequency of the quartz oscillator crystal 15 times, 14 times, 13 times times or 12 times in order to arrive at a frequency of 1 Hz, 2 Hz, 4 Hz or 8 Hz, depending on whether the useful signal is a one-second cycle or a corresponding fraction of a second.
- the clock generator arrangement 10 also has a further pulse counter 2', which is set up to count the clock signal of the second clock generator 4. This is particularly the case if the selected interval of movement of the second hand 13 cannot be achieved by halving the oscillation frequency of the quartz crystal or if a piezoelectric crystal other than a standard quartz crystal is used for the second clock 4.
- the output device 3 can be set up to compare a count value determined by counting the clock signal of the second clock generator 4 with the count value of the counted clock signal of the first clock generator 3 .
- the output device 3 can be set up to output the useful signal based on the clock signal of the first clock generator 1 if a count value of the counted clock signal of the first clock generator 1 is equal to the predetermined count value, only if there is a deviation between the clock signal of the second clock generator 4 and the Clock signal of the first clock generator 1 is less than a predetermined deviation.
- the output device 3 is set up to output a useful signal based on the clock signal of the second clock generator 4 instead of based on the clock signal of the first clock generator 1 to output.
- the second clock generator 4 with the quartz oscillating crystal acts as a substitute clock generator.
- the output device 3 can be set up to correct the predetermined count value using a predetermined correction factor. In this case, the output device 3 can be set up to output the useful signal when the count value of the clock signal of the first clock generator 1 is equal to the corrected predetermined count value.
- a temperature sensor 5 is provided in the clock generator arrangement 10, as can be seen in FIG. Of the Temperature sensor 5 is set up to detect a temperature of first clock generator 1 and/or its surroundings and to compare this with a predetermined temperature.
- the predetermined temperature is the temperature at which the predetermined count was established. If a temperature deviation between the detected temperature and the predetermined temperature is greater than a predetermined temperature deviation, the output device 3 may be configured to correct the predetermined counter value based on the detected temperature.
- a dependency of the oscillation frequency of the tourmaline oscillating crystal on the temperature must have been predetermined.
- the temperature characteristic of the tourmaline crystal must be measured in advance so that the predetermined count value can be corrected according to the detected temperature of the first clock generator 1 and/or its surroundings.
- the output device 3 is set up to output the useful signal when the count value of the clock signal of the first clock generator 1 is equal to the corrected predetermined count value.
- the detection of the current temperature by means of the temperature sensor 5 and the comparison of the detected current temperature with the predetermined temperature can take place at predetermined intervals.
- the correction parameter can be based on the predetermined temperature dependency of the oscillating frequency of the piezoelectric vibrating crystal of the first clock generator 1, a predetermined temperature dependency of the oscillating frequency of the piezoelectric vibrating crystal of the second clock generator 4, and a difference between a count value of the counted clock signal of the first clock generator 1 and a count value of the counted clock signal of the second clock 4 based.
- a further possibility of preventing an oscillation frequency deviation of the clock signal of the first clock generator 1 in the event of a temperature deviation is to always keep the first clock generator 1 at a constant temperature.
- a heating device 8 in addition to the temperature sensor 5, a heating device 8, in particular a heating coil, can be provided.
- the heating device 8 is set up to raise the temperature of the first clock generator 1 back to the predetermined temperature in the event of a deviation.
- the predetermined temperature corresponds to the highest temperature normally aimed for by means of the heating device 8 .
- the clock generator arrangement 10 preferably also comprises a third clock generator 7.
- the third clock generator ? comprises a piezoelectric resonant crystal and is set up to receive a clock signal to create.
- the piezoelectric crystal of the third clock generator 7 can be a synthetic standard quartz crystal.
- the clock generator arrangement can have a further pulse counter 2''.
- the output device 3 is set up to compare the clock signal of the third clock generator 7, the clock signal of the second clock generator 4 and the clock signal of the first clock generator 1 with one another. From the result of this comparison, aging-related oscillation frequency deviations of the piezoelectric oscillating crystal of the first clock generator 1 can also be discovered, which can then also be corrected.
- the clock generator arrangement 10, in particular the pulse counter 2 and/or the pulse counter 2' and/or the pulse counter 2" and/or the output device 3, can be implemented as a component, e.g. an application-specific integrated circuit (ASIC). ) can be formed.
- the clock arrangement 10, in particular the pulse counters 2, 2', 2'' and the output device 3, can be parts of a microcontroller.
- the first clock 1 is the primary clock of the clock array 10, with the second clock 4 and/or the third clock 7 serving as a backup clock if it is determined that the clock accuracy of the first clock 1 is not high is enough and/or are to be understood as a control clock so that the accuracy of the first clock 1 can be checked and, if necessary, corrected.
- the wristwatch 100 can also include a device 104 with a digital display device, by means of which the current frequency of the clock signal of the first clock generator 1 is displayed.
- the device 104 can include an interface via which an external device can read out the current frequency of the first clock generator 1 .
- the current temperature of the first clock generator 1 and thus also the current frequency of the clock signal of the first clock generator 1 can be determined. Displaying the current frequency of the clock signal of the first clock 1 can serve as evidence that the first clock 1 is in fact the primary clock of the clock array 10 .
- FIG. 3 shows that the raw tourmaline crystal 20 has a trigonal structure. In other words, the tourmaline crystallizes trigonally, i.e. in the shape of a triangle.
- the raw tourmaline crystal 20 has a first crystallographic axis 501 , a second crystallographic axis 502 and a third crystallographic axis 503 .
- the first crystallographic axis 501 corresponds to the longitudinal crystallographic axis of the rough tourmaline crystal 20.
- the second crystallographic axis 502 is perpendicular to the first crystallographic axis 501 and runs through an angle which is formed between a first facet 21 and a second facet 22 of the rough tourmaline crystal 20 forms.
- the second axis 502 can be referred to as the TA axis (TA: Triangle - Angle).
- the third crystallographic axis 503 of the raw tourmaline crystal 20 is perpendicular to the first crystallographic axis 501 and runs essentially parallel to the basic orientation of the slightly curved third facet 23 of the tourmaline resonating crystal.
- the third crystallographic axis 503 is referred to as TS axis (TS: tourmaline side).
- the raw tourmaline crystal 20 can be described by a structure triangle 24 or the cross section of the raw tourmaline crystal 20 perpendicular to the first crystallographic axis 501 can be approximated by a structure triangle 24, the sides of which are assigned to the facets 21, 22, 23 of the raw tourmaline crystal 20 or follow.
- the first crystallographic axis 501 is perpendicular to the plane of the structural triangle 24
- the second crystallographic axis 502 is perpendicular to the first crystallographic axis 501 and passes through an angle formed between two of the three sides of the structural triangle 24 .
- the third crystallographic axis 503 is perpendicular to the first crystallographic axis 501 and parallel to one of the three sides of the structure triangle 24.
- a tourmaline platelet 25 is cut out of the raw tourmaline crystal 20 at an angle of 90° to the first crystallographic axis 501 .
- a normal vector 26 of a major surface of the tourmaline platelet 25 is parallel to the first crystallographic axis 501.
- a tourmaline platelet 25 can be cut out of the raw tourmaline crystal 20 at an angle of 45° to the first crystallographic axis, or at any optimum angle , which corresponds to the specific chemical structure of the particular type of tourmaline used.
- the wristwatch 100 described with the clock arrangement 10 ensures on the one hand the advantages of high accuracy, a compact design and an unlimited power reserve, which has a clock arrangement with a quartz oscillating crystal.
- the wristwatch does not have a mass-produced quartz movement, so it does not have the negative image of a conventional quartz movement.
- the first clock 1 comprises a tourmaline crystal
- the first clock 1 comprises a piezoelectric crystal made of another material such as amethyst or citrine instead of a tourmaline crystal.
- FIG. 4 relates to a wristwatch 100 according to a second embodiment.
- FIG. 4 shows in particular a piezoelectric oscillating crystal of the first clock generator 1 of the clock generator arrangement 10 of the wristwatch 100 according to the second exemplary embodiment.
- a difference between the wristwatch 100 according to the first embodiment and that of the wristwatch 100 according to the second embodiment is that the piezoelectric vibrating crystal of the first clock generator 1 of the clock generator arrangement 10 of the wristwatch 100 according to the second embodiment is a quartz vibrating crystal and as a fork vibrator 27 is formed with two prongs 270.
- each prong 270 is preferably 3.02127 mm
- the thickness 272 of each prong 270 is preferably 0.3 mm
- the depth 273 of each prong 270 is 0.6 mm or some other practical depth which does not affect the frequency.
- the oscillation frequency of the piezoelectric oscillator crystal, i.e. the fork oscillator 27, of the first clock generator 1 is 8888 Hz 273 of each prong 270 is also preferably 0.3 mm.
- the oscillation frequency of the piezoelectric oscillating crystal, i.e. the fork oscillator is 27.88888 Hz.
- the length 271 corresponds to the dimension of the respective prong 270 in a direction essentially parallel to the Y crystal axis 504, the thickness 272 to the dimension of the respective prong 270 in a direction essentially parallel to the X crystal axis 505 and the depth 273 to the dimension of the respective prong 270 in a direction essentially parallel to the Z-crystal axis 506 of the quartz resonant crystal of the first clock generator 1.
- the vibration frequency of 8888 Hz or 88888 Hz is selected as a predetermined vibration frequency of the piezoelectric vibrating crystal of the first timer 1 and then formed as the fork vibrator 27 described.
- the wristwatch 100 has the additional advantage that it is individualized due to the selected frequency of 8888 Hz or 88888 Hz for the piezoelectric oscillating crystal of the first clock generator 1 and is therefore not perceived as a mass product. It is also possible that the fork vibrator 27 is provided with another predetermined vibration frequency.
- the predetermined vibration frequency may correspond to the date of birth of the wristwatch 100 owner.
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Abstract
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DE102020135100.3A DE102020135100B4 (de) | 2020-12-30 | 2020-12-30 | Armbanduhr |
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DE602005014762D1 (de) * | 2004-03-17 | 2009-07-16 | Seiko Epson Corp | Vorrichtung, methode und programm zur ansteuerung eines piezoelektrischen aktors und elektronisches bauelement mit einem solchen |
JP2006220612A (ja) * | 2005-02-14 | 2006-08-24 | Jeco Co Ltd | 計時装置 |
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TW201225540A (en) | 2010-12-14 | 2012-06-16 | Askey Computer Corp | Multiple-output clock source signal generator |
JP2012199735A (ja) * | 2011-03-22 | 2012-10-18 | Seiko Instruments Inc | 圧電振動子の製造方法、圧電振動子、該圧電振動子を有する発振器、電子機器及び電波時計 |
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CN102932084B (zh) * | 2012-10-17 | 2015-11-11 | 航天科工深圳(集团)有限公司 | 采样时钟同步的方法及*** |
WO2015093187A1 (ja) * | 2013-12-18 | 2015-06-25 | カルソニックカンセイ株式会社 | マイクロコンピュータおよびそのクロックの補正方法 |
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2020
- 2020-12-30 DE DE102020135100.3A patent/DE102020135100B4/de active Active
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2021
- 2021-12-17 CN CN202180017096.0A patent/CN115244471B/zh active Active
- 2021-12-17 WO PCT/EP2021/086475 patent/WO2022144192A1/de active Application Filing
- 2021-12-17 JP JP2023538894A patent/JP2024501675A/ja active Pending
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Publication number | Publication date |
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DE102020135100A1 (de) | 2022-06-30 |
JP2024501675A (ja) | 2024-01-15 |
US20230161298A1 (en) | 2023-05-25 |
CN115244471B (zh) | 2024-06-11 |
DE102020135100B4 (de) | 2022-08-11 |
CN115244471A (zh) | 2022-10-25 |
WO2022144192A1 (de) | 2022-07-07 |
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