• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method (METH) for detecting and calculating the height of a jump made by an individual, comprising the following step: a detection (METH_Dr) of a reception following the jump, this step comprising a sub-step of detection (METH_Dr_PC PR) of a pressure peak of amplitude greater than a first threshold amplitude, within pressure measurements provided by a pressure sensor embedded in a wrist worn on the wrist of the individual.
    公开号:CH713221A2
    申请号:CH01635/16
    申请日:2016-12-12
    公开日:2018-06-15
    发明作者:Germiquet Christophe；Ferri Yvan；Willemin Michel
    申请人:Swatch Group Res & Dev Ltd；
    IPC主号:
    专利说明:

    Description
    Field of the Invention [0001] The invention relates to a method for detecting and calculating the height of a jump. The method is particularly suitable for detecting and calculating the height of a jump made generally downward (according to a terrestrial reference) and without the aid of moving means to gain momentum before the jump. This is particularly the case of a jump in the water, for example from a cliff, a diving board or a bridge.
    By height, we mean the difference between the altitude of the individual or the athlete at the time he starts the jump, and the altitude of the athlete at its reception. In the case of a jump in the water, reception is called the entry of the sportsman into the water.
    By jumping globally down, we do not exclude cases where the athlete would take a starting impulse causing it to go upwards before being dragged down by gravity, if the height traveled upwards. is negligible compared to the height traveled down.
    By means of displacement to gain momentum before the jump means external means to the athlete and the contact of the ground before the jump, such as a bicycle, a skateboard, skis, a snowboard, rollers etc.
    BACKGROUND OF THE INVENTION Document US 2002/0116 147 discloses a method of detecting a jump by means of a measurement unit mounted on displacement means used by an athlete to take advantage of the momentum before the jump and in contact with the ground before and after the jump. The means of travel are for example skis or a snowboard. A calculation unit, for example a watch worn by the athlete, makes it possible to determine and display jump parameters, in particular the duration of the jump, based on measurements made by the unit of measurement. More precisely, the measurement unit detects vibrations of the displacement means, to detect when the moving means leave the ground and return to the ground, which makes it possible to detect a jump.
    This method has the disadvantage of being used only when the athlete uses displacement means subjected to vibration in contact with the ground and allowing him to gain speed before the jump. This device is not suitable for jumps made without such means. SUMMARY OF THE INVENTION [0007] The object of the present invention is to overcome the drawback mentioned above.
    For this purpose, the invention relates to a method for detecting and calculating the height of a jump performed by an individual, comprising the following step: detecting a consecutive wake-up reception, this step comprising a substep of detecting a pressure peak of amplitude greater than a first threshold amplitude, within pressure measurements provided by a pressure sensor embedded in a wristwatch of the individual.
    The invention takes advantage of the observation that a consecutive reception to a jump is at the origin of a strong pressure peak observed in the data measured by a pressure sensor or an altimeter. A detection of a peak pressure or altitude is therefore an indication of a reception on the ground.
    In addition to the above characteristics, the method according to the invention may include the following features, taken alone or in combination in any technically possible combinations.
    In one nonlimiting embodiment, the method comprises the following step: a calculation of a jump height by difference of a starting altitude corresponding to a last stable pressure measured before the peak pressure and an arrival altitude corresponding to a first stable pressure measured after the peak pressure.
    When a reception has been detected, the pressure measurements recorded during the instants preceding and following this reception are used to calculate the height of the jump. Indeed, in the case of a jump performed globally downwards and without the aid of moving means to gain momentum before the jump, the pressure measurements have two stable phases: one preceding the jump, the other following the reception after the jump. Naturally, during these stable phases, the instantaneous pressures may vary, but the pressure measurements oscillate around a stable value.
    In a non-limiting embodiment, the step of detecting a reception also comprises a substep of detecting an amplitude acceleration peak greater than a second threshold amplitude, from measurements of acceleration provided by a three-axis accelerometer embedded in the watch, and a substep of comparing the instant associated with the acceleration peak and the moment associated with the peak pressure.
    By acceleration measure is meant the standard of a 3 component acceleration vector, that is to say the square root of the sum of the squares of the components.
    The aforementioned advantageous features take advantage of the observation that a consecutive reception to a jump is at the origin of a strong acceleration peak observed in the data measured by a triaxial accelerometer. A detection of an acceleration peak is therefore an index of a reception which makes it possible to confirm that a jump has indeed taken place by correlation with the peak pressure.
    In a non-limiting embodiment, the second threshold amplitude is greater than 2 G.
    In a non-limiting embodiment, the first threshold amplitude is greater than 10 hectopascals.
    BRIEF DESCRIPTION OF THE DRAWINGS [0018] Other features and advantages will become clear from the description which is given below, by way of indication and in no way limitative, with reference to the appended drawings, in which:
    Fig. 1 represents an electronic watch allowing the implementation of the method according to a non-limiting embodiment of the invention.
    Fig. 2 shows a curve representing pressure measurements during a jump in water from a cliff.
    Fig. 3 shows a functional diagram representative of the steps of the method according to a non-limiting embodiment of the invention.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a nonlimiting embodiment, the METH process according to the invention is entirely implemented by an electronic MT watch carried by an individual performing a jump. In a non-limiting embodiment shown in FIG. 1, the MT watch comprises: a set of CP sensors, including a CP_AC accelerometer and a CP_AT (or altimeter) pressure sensor; an MD memory for recording measurements made by the CP sensors. The measurements are advantageously recorded in the memory in a sliding manner, according to the principle FIFO ("first in, first out")
    an MP microprocessor for processing the information contained in the memory MD
    digital or analog display means MA, for displaying the results of the calculations carried out by the microprocessor MP, the activation means MC, mechanical, electronic or tactile, the sensors CP, the memory MD, the microprocessor MP and the MA display means for triggering the PR process.
    FIG. 2 shows a curve representing the pressure PR measured by the pressure sensor CP_PR of the watch MT as a function of time t, and in particular during four phases Pi, P2, P3 and P4.
    In the first phase P ^ the individual is in contact with the ground. During this first phase, the pressure PRd measured by the pressure sensor CP_PR is substantially constant. This pressure makes it possible to calculate a so-called departure altitude ATd. Then, the individual takes off from the ground and quickly finds himself in free fall, which corresponds to the second phase P2. Then, the individual enters the water (he receives himself), and then swims out of the water, which corresponds to the third phase P3. The beginning of the third phase P3 is recognizable thanks to the pressure peak PCpr visible on the first curve. Finally, in a fourth phase P4, the individual leaves the water and is again in contact with the ground. During this fourth phase P4, the pressure PRa measured by the pressure sensor CP_AT is substantially constant. This pressure makes it possible to calculate an altitude ATa called arrival.
    A first step of the METH method according to the invention consists in detecting that a jump has been made (step METH_Dr in Fig. 3). More particularly, the detection step METH_Dr comprises a first sub-step METH_Dr_PCPR consisting of detecting a pressure peak PCpr in the measurements provided by the pressure sensor CP_PR. Indeed, when a jump is made, a PCPR pressure peak is observed at the instant corresponding to the reception on the ground of the individual. When such a PCPR peak is detected, it is compared to a threshold value beyond which it is decided that the PCPR peak corresponds to a ground reception following a jump.
    In one embodiment, to confirm that this pressure peak PCpr corresponds to a consecutive reception to a jump, the METH_Dr detection step also comprises a second sub-step METH_Dr_PCAc consisting in detecting a PCac acceleration peak. in the measurements provided by the CP_AC accelerometer. Such a PCac acceleration peak should be raised at a time substantially identical to that at which the PCPR pressure peak was detected. The moments corresponding to the pressure peak PCpr and the acceleration peak PCac are therefore compared. If the standard of the difference between these instants is less than a threshold value, for example 0.5 seconds, then it is decided that the peaks PCpr, PCac correspond to a ground reception following a jump.
    A second step of the METH method according to the invention is to calculate the height Ht of the jump (step METHJHt). For this, the arrival altitude ATa is subtracted at the departure altitude ATd. Note that the departure altitude ATd is calculated using the last stable pressure PRd measured before reception, that is to say the stable pressure recorded during the first phase P ^ The arrival altitude ATa is calculated by means of the first stable pressure PRa measured after reception, that is to say the stable pressure detected during the fourth phase P4.
    Of course, the present invention is not limited to the example shown but is susceptible to various variations and modifications that will occur to those skilled in the art.
    权利要求:
    Claims (5)
    [1]
    claims
    A method (METH) for detecting and calculating the height of a jump made by an individual, comprising the following step: a detection (METH_Dr) of a reception following the jump, this step comprising a sub-step of detection (METH_Dr_PCpR) of a pressure peak (PCpr) of amplitude greater than a first threshold amplitude, within pressure measurements (PR) provided by a pressure sensor (CP_PR) embedded in a watch (MT) brought to wrist of the individual.
    [2]
    2. Method (METH) according to the preceding claim, comprising the following step: - A calculation (METH_Ht) of a height (Ht) of the jump by difference of a departure altitude (ATd) corresponding to a last stable pressure ( PRd) measured before the peak pressure (PCPR) and an arrival altitude (Ata) corresponding to a first stable pressure (PRa) measured after the peak pressure (PCPR) via the pressure sensor (CP_PR).
    [3]
    3. Method (METH) according to one of the preceding claims, the step of detecting (METH_Dr) a reception comprising a sub-step of detection (METH_Dr_PCAc) of an acceleration peak (PCAc) of greater amplitude at a second threshold amplitude, from acceleration measurements (AC) provided by a three-axis accelerometer (CP_AC) embedded in the watch (MT), and a substep of comparison of the instant associated with the acceleration peak (PCac) and the moment associated with the pressure peak (PCPR).
    [4]
    4. Method (METH) according to the preceding claim, wherein the second threshold amplitude is greater than 2 G.
    [5]
    5. Method (METH) according to one of the preceding claims, wherein the first threshold amplitude is greater than 10 hectopascals.
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    同族专利:
    公开号 | 公开日
    CH713221B1|2021-09-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01635/16A|CH713221B1|2016-12-12|2016-12-12|Method for detecting and calculating the height of a jump.|CH01635/16A| CH713221B1|2016-12-12|2016-12-12|Method for detecting and calculating the height of a jump.|
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