WO2022249645A1 - Circuit de traitement de signal, dispositif de traitement de signal et programme de traitement de signal - Google Patents

Circuit de traitement de signal, dispositif de traitement de signal et programme de traitement de signal Download PDF

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Publication number
WO2022249645A1
WO2022249645A1 PCT/JP2022/010833 JP2022010833W WO2022249645A1 WO 2022249645 A1 WO2022249645 A1 WO 2022249645A1 JP 2022010833 W JP2022010833 W JP 2022010833W WO 2022249645 A1 WO2022249645 A1 WO 2022249645A1
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Prior art keywords
input signal
signal
potential
threshold
signal processing
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PCT/JP2022/010833
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English (en)
Japanese (ja)
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雄彦 飯塚
浩嗣 川野
知重 古樋
純 牧野
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株式会社村田製作所
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Publication of WO2022249645A1 publication Critical patent/WO2022249645A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
    • G01L5/167—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using piezoelectric means

Definitions

  • the present invention relates to signal processing circuits.
  • the swing analysis device described in Patent Document 1 detects the swing of a golf club by attaching an acceleration sensor and an angular velocity sensor to the shaft of the golf club. As a result, the swing analysis device can accurately analyze the swing of the golf club.
  • an object of the present invention is to provide a signal processing circuit, a signal processing device, and a signal processing program capable of generating a signal that contributes to improving the accuracy of swing analysis.
  • the inventor of the present application has studied the generation of signals that can contribute to improving the accuracy of swing analysis. Then, the inventors of the present application have found that golf swing analysis is characterized in that the output of the sensor at the moment of impact of the ball is large, whereas the output of the sensor at the start of the swing is small. Therefore, it has been found that there is a problem that the strength of the signal at the start of the swing becomes too small when trying to obtain a signal that can detect the moment of impact. On the other hand, when trying to obtain a signal that can detect the start of the swing, it was found that there was a problem that the signal was distorted at the moment of impact. In this way, the inventor of the present application has noticed that the golf swing analysis requires special conditions for the signals used in the analysis.
  • the inventors of the present application believe that a greatly amplified signal should be used when the output of the sensor is low, such as at the start of the swing, and a non-amplified or slightly amplified signal should be used at the moment of impact. Arrived.
  • a signal processing circuit includes: A first acquisition step of acquiring a first input signal and a second input signal based on the output of a first sensor that detects deformation of the object to be measured, wherein the first input signal is equal to or equal to a first amplification factor.
  • the second input signal is an amplified signal
  • the second input signal is a signal amplified to a second amplification factor greater than the first amplification factor, or the second input signal is a signal amplified to a second amplification factor greater than the first amplification factor, a first obtaining step in which distortion occurs in a range in which the absolute value of the difference obtained by subtracting the first reference potential from the potential is greater than the second threshold;
  • the distortion occurring in the first correction signal in the range whose absolute value is greater than the second threshold is the absolute value of the difference obtained by subtracting the first reference potential from the potential of the second input signal.
  • a first generating step that is less than the distortion occurring in the second input signal in a range greater than a threshold; to run.
  • the signal processing circuit of the present invention it is possible to generate a signal that can contribute to improving the accuracy of swing analysis.
  • FIG. 1 shows a golf club 200 to which the signal processing device 10 is attached.
  • FIG. 2 is a block diagram of the signal processing device 10.
  • FIG. 3 is a top view and cross-sectional view of the sensor 12a.
  • FIG. 4 is a waveform diagram of the input signals Sig1 and DSig1.
  • FIG. 5 is a waveform diagram of the input signals Sig2 and DSig2.
  • FIG. 6 is a waveform diagram of the correction signal DSig11.
  • FIG. 7 is a waveform diagram of the input signals Sig1 and DSig1 used when explaining the generation of the correction signal DSig11.
  • FIG. 8 is a flowchart executed by the signal processing circuit 24. As shown in FIG.
  • FIG. 1 shows a golf club 200 to which the signal processing device 10 is attached.
  • FIG. 2 is a block diagram of the signal processing device 10.
  • FIG. 3 is a top view and cross-sectional view of the sensor 12a.
  • FIG. 4 is a waveform diagram of the input signals Sig1 and DSig1.
  • FIG. 5 is a waveform diagram of the input signals Sig2 and DSig2.
  • FIG. 6 is a waveform diagram of the correction signal DSig11.
  • FIG. 7 is a waveform diagram of the input signals Sig1 and DSig1 used when explaining the generation of the correction signal DSig11.
  • golf club 200 is a rod-shaped member.
  • the direction in which the golf club 200 (object to be measured) extends is defined as the vertical direction.
  • the direction in which the face of the golf club 200 faces is defined as the left direction.
  • a direction orthogonal to the up-down direction and the left-right direction is defined as the front-rear direction.
  • the definition of the direction in this specification is an example. Therefore, the direction of the golf club 200 during actual use does not need to match the direction in this specification.
  • the signal processing device 10 is attached to a golf club 200 as shown in FIG.
  • the signal processing device 10 detects deformation of the golf club 200 during swing.
  • the signal processing device 10 transmits a signal regarding deformation of the golf club 200 to a wireless communication terminal, a server, or the like by wireless communication.
  • a wireless communication terminal is, for example, a smartphone.
  • the signal processing device 10 includes sensors 12a to 12c, charge amplifiers 14a to 14c, amplifier circuits 16a to 16c, 18a to 18c, an IC (Integrated Circuit) 30, and an antenna 32, as shown in FIG.
  • the sensors 12a-12c are piezoelectric sensors that detect pressure. Sensors 12 a - 12 c detect deformation of golf club 200 . Specifically, the sensor 12a (first sensor) detects bending of the golf club 200 (object to be measured) in the horizontal direction (second direction) orthogonal to the vertical direction (first direction). The sensor 12b (second sensor) detects bending of the golf club 200 (object to be measured) in the front-rear direction (third direction) orthogonal to the up-down direction (first direction) and the left-right direction (second direction). The sensor 12c (third sensor) detects twisting of the golf club 200 (object to be measured) in the vertical direction (first direction). Since the sensors 12a to 12c have the same structure, the sensor 12a will be described below as an example.
  • the sensor 12a includes a piezoelectric film 114, a first electrode 115a and a second electrode 115b, as shown in FIG.
  • the piezoelectric film 114 has a sheet shape.
  • the piezoelectric film 114 has a rectangular shape.
  • the direction in which the long side of the piezoelectric film 114 extends is defined as the X-axis direction.
  • the direction in which the short sides of the piezoelectric film 114 extend is defined as the Y-axis direction.
  • a direction orthogonal to the X-axis direction and the Y-axis direction is defined as the Z-axis direction.
  • the piezoelectric film 114 has a first main surface F1 and a second main surface F2.
  • the length of the piezoelectric film 114 in the X-axis direction is longer than the length of the piezoelectric film 114 in the Y-axis direction.
  • the piezoelectric film 114 generates electric charge according to the amount of deformation of the piezoelectric film 114 .
  • piezoelectric film 114 is a PLA film. The piezoelectric film 114 will be described in more detail below.
  • piezoelectric film 114 In the piezoelectric film 114, the polarity of the charge generated when the piezoelectric film 114 is stretched in the X-axis direction is the same as the polarity of the charge generated when the piezoelectric film 114 is stretched in the Y-axis direction. It has a characteristic that is opposite to the polarity.
  • piezoelectric film 114 is a film formed from a chiral polymer.
  • a chiral polymer is, for example, polylactic acid (PLA), particularly L-type polylactic acid (PLLA).
  • a PLLA composed of a chiral polymer has a helical structure in its main chain. PLLA is uniaxially stretched and has piezoelectricity in which the molecules are oriented.
  • the piezoelectric film 114 has a piezoelectric constant of d14.
  • the uniaxial stretching direction (orientation direction) of the piezoelectric film 114 forms an angle of 45 degrees with respect to each of the X-axis direction and the Y-axis direction. This 45 degrees includes angles including, for example, about 45 degrees ⁇ 10 degrees. Accordingly, the piezoelectric film 114 generates an electric charge by being deformed such that the piezoelectric film 114 is stretched in the X-axis direction or deformed so as to be compressed in the X-axis direction. Therefore, the output of sensor 12a is charge.
  • the piezoelectric film 114 generates a positive charge when it is deformed so as to be stretched in the X-axis direction, for example.
  • the piezoelectric film 114 generates a negative charge when deformed, for example in compression in the X-axis direction.
  • the magnitude of the charge depends on the differential value of the amount of deformation in the X-axis direction of the piezoelectric film 114 due to extension or compression.
  • the first electrode 115a is a signal electrode.
  • the first electrode 115a is provided on the first main surface F1.
  • the first electrode 115a is, for example, an organic electrode such as ITO (indium tin oxide) or ZnO (zinc oxide), a metal film by vapor deposition or plating, or a printed electrode film by silver paste.
  • the second electrode 115b is a ground electrode.
  • the second electrode 115b is connected to ground potential.
  • the second electrode 115b is provided on the second main surface F2.
  • the piezoelectric film 114 is positioned between the first electrode 115a and the second electrode 115b.
  • the second electrode 115b covers the second main surface F2.
  • the second electrode 115b is, for example, an organic electrode such as ITO (indium tin oxide) or ZnO (zinc oxide), a metal film by vapor deposition or plating, or a printed electrode film by silver paste.
  • the sensor 12a is fixed to the golf club 200 via an adhesive layer (not shown). Specifically, the adhesive layer fixes the golf club 200 and the first electrode 115a. At this time, the sensor 12a is fixed to the right surface of the shaft of the golf club 200 so that the X-axis direction and the vertical direction match. As a result, when the shaft of golf club 200 bends leftward, the vertical extension amount of the right surface of the shaft of golf club 200 increases. Therefore, the amount of extension of the piezoelectric film 114 in the X-axis direction increases. As a result, piezoelectric film 114 generates a positive charge. When the shaft of golf club 200 bends to the right, the vertical contraction amount of the right surface of the shaft of golf club 200 increases. Therefore, the amount of shrinkage of the piezoelectric film 114 in the X-axis direction increases. As a result, piezoelectric film 114 generates a negative charge.
  • the sensor 12b is fixed to the golf club 200 via an adhesive layer (not shown). Specifically, the adhesive layer fixes the golf club 200 and the first electrode 115a. At this time, the sensor 12b is fixed to the front surface of the shaft of the golf club 200 so that the X-axis direction and the vertical direction match. As a result, when the shaft of golf club 200 bends backward, the amount of vertical extension of the front surface of the shaft of golf club 200 increases. Therefore, the amount of extension of the piezoelectric film 114 in the X-axis direction increases. As a result, piezoelectric film 114 generates a positive charge. When the shaft of golf club 200 bends forward, the amount of vertical contraction of the front surface of the shaft of golf club 200 increases. Therefore, the amount of shrinkage of the piezoelectric film 114 in the X-axis direction increases. As a result, piezoelectric film 114 generates a negative charge.
  • the sensor 12c is fixed to the golf club 200 via an adhesive layer (not shown). Specifically, the adhesive layer fixes the golf club 200 and the first electrode 115a. At this time, the sensor 12c is fixed to the shaft of the golf club 200 so that the X-axis direction and the vertical direction form an angle of 45°. As a result, when the shaft of the golf club 200 is twisted in the first circumferential direction around the vertical direction, the extension amount of the piezoelectric film 114 in the X-axis direction increases. As a result, piezoelectric film 114 generates a positive charge. When the shaft of the golf club 200 is twisted in the second circumferential direction around the vertical direction, the amount of shrinkage of the piezoelectric film 114 in the X-axis direction increases. As a result, piezoelectric film 114 generates a negative charge.
  • Each of the charge amplifiers 14a-14c converts the charges generated by the sensors 12a-12c into detection signals SigA-SigC, which are voltage signals.
  • the amplifier circuits 16a to 16c generate input signals Sig1, Sig3, and Sig5 by amplifying the detection signals SigA to SigC, respectively, as shown in FIG.
  • each of the input signals Sig1, Sig3, and Sig5 is a signal obtained by amplifying the detection signals SigA to SigC by the same factor.
  • the amplifier circuits 18a to 18c generate input signals Sig2, Sig4, and Sig6 by amplifying the detection signals SigA to SigC, respectively, as shown in FIG.
  • Each of the amplifier circuits 18a to 18c generates input signals Sig2, Sig4, Sig6 (second input signal, fourth input signal, sixth input signal) amplified to the second amplification factor.
  • the second gain is, for example, 5 times.
  • Input signals Sig2, Sig4, and Sig6 are given absolute values of differences obtained by subtracting reference potentials V11, V12, and V13 (first to third reference potentials) from the potentials of input signals Sig2, Sig4, and Sig6, respectively. is greater than the threshold values V2, V4, and V6. Distortion is likely to occur in the input signals Sig2, Sig4, and Sig6, for example, at the moment the golf club 200 hits the ball.
  • the cause of distortion in the input signals Sig2, Sig4 and Sig6 is, for example, the dynamic range of the amplifier circuits 18a to 18c.
  • the reference potentials V11, V12, V13 are, for example, 0 V (ground potential). Therefore, the difference obtained by subtracting the reference potentials V11, V12, V13 (first to third reference potentials) from the potentials of the input signals Sig2, Sig4, Sig6 is the potentials of the input signals Sig2, Sig4, Sig6. . As shown in FIG. 5, the potentials of the input signals Sig2, Sig4 and Sig6 are lower than the thresholds -V2, -V4 and -V6 from time t1 to t2.
  • the absolute values of the potentials of the input signals Sig2, Sig4 and Sig6 are greater than the threshold values V2, V4 and V6. Therefore, distortion occurs in the input signals Sig2, Sig4, and Sig6 from time t1 to t2.
  • the IC 30 is a semiconductor integrated circuit.
  • the IC 30 includes ADCs (Analog Digital Converters) 20 a - 20 c, 22 a - 22 c, a signal processing circuit 24 and a communication circuit 26 .
  • the ADCs 20a to 20c convert analog input signals Sig1, Sig3 and Sig5 into digital input signals DSig1, DSig3 and DSig5.
  • the ADCs 22a to 22c convert analog input signals Sig2, Sig4 and Sig6 into digital input signals DSig2, DSig4 and DSig6.
  • the input signals DSig1 to DSig6 are 10-bit digital signals.
  • the signal processing circuit 24 is a CPU (Central Processing Unit).
  • the signal processing circuit 24 generates input signals DSig1 to DSig6 (first input signal to sixth input signal) based on outputs of sensors 12a to 12c (first sensor to third sensor) that detect deformation of the golf club 200 (object to be measured). signal). Then, the signal processing circuit 24 temporarily stores the input signals DSig1 to DSig6 (first to sixth input signals) in an internal memory.
  • each of the input signals DSig1, DSig3, and DSig5 (first input signal, third input signal, fifth input signal) is a signal amplified by the same factor.
  • Each of the input signals DSig2, DSig4 and DSig6 is a signal amplified to the second gain.
  • Input signals Sig2, Sig4, and Sig6 (second input signal, fourth input signal, sixth input signal) are applied to input signals Sig2, Sig4, and Sig6 (second input signal, fourth input signal, sixth input signal), respectively.
  • the absolute values of the differences obtained by subtracting the reference potentials V11, V12, and V13 (first to third reference potentials) from the potentials of V2, V4, and V6 (second threshold, fourth threshold, sixth threshold, threshold).
  • the digital values of the threshold values V2, V4 and V6 are 640, for example.
  • the signal processing circuit 24 generates a correction signal DSig11 (first correction signal) based on the input signal DSig1 (first input signal) and the input signal DSig2 (second input signal). At this time, the distortion occurring in the correction signal DSig11 between times t1 and t2 shown in FIG. 6 is smaller than the distortion occurring in the input signal DSig2 between times t1 and t2 shown in FIG.
  • the correction signal DSig11 (first correction signal)
  • the distortion that occurs is that the absolute value of the difference obtained by subtracting the reference potential V11 (first reference potential) from the potential of the input signal DSig2 (second input signal) is greater than the threshold value V2. 2 input signals).
  • the signal processing circuit 24 generates the correction signal DSig11 at times t1 to t2 based on the input signal DSig1 at times t1 to t2. That is, the signal processing circuit 24 treats the range in which the absolute value of the difference obtained by subtracting the reference potential V11 (first reference potential) from the potential of the input signal DSig2 (second input signal) is greater than the threshold value V2 as the input signal DSig1.
  • a correction signal DSig11 (first correction signal) is generated by generating it based on (first input signal).
  • a threshold value V1 (first threshold value) is obtained by dividing the threshold value V2 by the first magnification.
  • the second gain is 5 times. Therefore, the first magnification is also 5 times.
  • the threshold V2 is 640. Therefore, the threshold V1 is 128.
  • the signal processing circuit 24 replaces the input signal DSig2 at times t1 to t2 with a value obtained by multiplying the input signal DSig1 at times t1 to t2 by a first magnification (5 times).
  • the signal processing circuit 24 performs the following for the range in which the absolute value of the difference obtained by subtracting the reference potential V11 (first reference potential) from the potential of the input signal DSig1 (first input signal) is greater than the threshold value V1.
  • the signal processing circuit 24 generates a correction signal DSig12 (second correction signal) based on the input signal DSig3 (third input signal) and the input signal DSig4 (fourth input signal).
  • the signal processing circuit 24 generates a correction signal DSig13 (third correction signal) based on the input signal DSig5 (fifth input signal) and the input signal DSig6 (sixth input signal).
  • the operation when the signal processing circuit 24 generates the correction signals DSig12 and DSig13 is the same as the operation when the signal processing circuit 24 generates the correction signal DSig11, so the description is omitted.
  • the communication device 34 transmits the correction signals DSig11 to DSig13 (first correction signal to third correction signal) generated by the signal processing circuit 24 by electromagnetic waves.
  • the communication circuit 26 converts the correction signals DSig11 to DSig13 into a communicable data format.
  • the communication method of the communication circuit 26 is, for example, Bluetooth (registered trademark).
  • the antenna 32 transmits the correction signals DSig11 to DSig13 converted by the communication circuit 26 by electromagnetic waves.
  • FIG. 8 is a flowchart executed by the signal processing circuit 24. As shown in FIG. The signal processing circuit 24 executes a signal processing program stored in a memory circuit provided in the signal processing circuit 24 to perform operations described below. Therefore, the signal processing program is recorded on the recording medium.
  • the signal processing circuit 24 generates an input signal DSig1 and an input signal DSig2 (first input signal and second input signal) based on the output of the sensor 12a (first sensor) that detects deformation of the golf club 200 (object to be measured). is acquired (step S1 first acquisition step).
  • the signal processing circuit 24 generates a correction signal DSig11 (first correction signal) based on the input signal DSig1 (first input signal) and the input signal DSig2 (second input signal) (step S2 first generation step). A detailed description of the first generation step is omitted since it has already been described. After that, the signal processing circuit 24 outputs the correction signal DSig11 to the communication circuit 26 .
  • the signal processing circuit 24 outputs an input signal DSig3 and an input signal DSig4 (third input signal and fourth input signal) based on the output of the sensor 12b (second sensor) that detects deformation of the golf club 200 (object to be measured). ) is acquired (step S3 second acquisition step).
  • the signal processing circuit 24 generates the correction signal DSig12 (second correction signal) based on the input signal DSig3 (third input signal) and the input signal DSig4 (fourth input signal) (step S4 second generation step). A detailed description of the second generation step is omitted because it is the same as the first generation step. After that, the signal processing circuit 24 outputs the correction signal DSig12 to the communication circuit 26 .
  • the signal processing circuit 24 generates an input signal DSig5 and an input signal DSig6 (fifth input signal and sixth input signal) based on the output of the sensor 12c (third sensor) that detects deformation of the golf club 200 (object to be measured). ) is acquired (step S5 third acquisition step).
  • the signal processing circuit 24 generates the correction signal DSig13 (third correction signal) based on the input signal DSig5 (fifth input signal) and the input signal DSig6 (sixth input signal) (step S6 third generation step). A detailed description of the third generation step is omitted because it is the same as the first generation step. After that, the signal processing circuit 24 outputs the correction signal DSig13 to the communication circuit 26 .
  • the correction signals DSig11 to DSig13 are transmitted via the communication circuit 26 and the antenna 32 by electromagnetic waves.
  • the signal processing device 10 and the signal processing circuit 24 can generate the correction signal DSig11 that can contribute to improving the analysis accuracy of the swing. More specifically, the signal processing circuit 24 generates the correction signal DSig11 based on the input signal DSig1 and the input signal DSig2. At this time, the distortion occurring in the correction signal DSig11 in a range in which the absolute value of the difference obtained by subtracting the reference potential V11 from the potential of the correction signal DSig11 is greater than the threshold value V2 is obtained by subtracting the reference potential V11 from the potential of the input signal DSig2. The absolute value of the difference obtained by subtraction is smaller than the distortion occurring in the input signal DSig2 in the range larger than the threshold value V2. Thus, the signal processing circuit 24 generates the corrected signal DSig11 with reduced distortion. As a result, the signal processing device 10 and the signal processing circuit 24 can generate the correction signal DSig11 that can contribute to improving the analysis accuracy of the swing.
  • the correction signal DSig11 as described above is generated, for example, by the following processing.
  • the signal processing circuit 24 multiplies the range in which the absolute value of the difference obtained by subtracting the reference potential V11 from the potential of the input signal DSig1 is greater than the threshold value V1 by a first magnification, and converts the potential of the input signal DSig2 to a reference value.
  • a correction signal DSig11 is generated by applying it to a range in which the absolute value of the difference obtained by subtracting the potential V11 is greater than the threshold value V2.
  • the signal processing circuit according to the present invention is not limited to the signal processing circuit 24, and can be modified within the scope of the gist thereof.
  • the IC 30 includes ADCs 20a to 20c, 22a to 22c, a signal processing circuit 24 and a communication circuit 26.
  • IC 30 may be implemented by multiple ICs. That is, the IC including the ADCs 20a to 20c and 22a to 22c, the IC including the signal processing circuit 24, and the IC including the communication circuit 26 may be separate ICs.
  • the signal processing device 10 does not have to include the ADCs 20a to 20c.
  • the ADCs 20a to 20c may generate the input signals DSig1, DSig3, and DSig5 amplified to the first amplification factor.
  • the first magnification is a value obtained by dividing the second amplification factor by the first amplification factor.
  • the input signal DSig3 (third input signal) may be a signal amplified to a third gain.
  • the input signal DSig5 (fifth input signal) may be a signal amplified to a fifth gain.
  • the input signal DSig6 (sixth input signal) may be a signal amplified to a sixth gain.
  • steps S3 to S6 are not essential.
  • an object other than the golf club 200 may be used as the object to be measured.
  • the second amplification factor is not limited to 5 times.
  • the sensors 12a-12c may be strain gauges.
  • the magnitude of the strain gauge output depends on the deformation amount of the strain gauge.
  • reference potential V11 (first reference potential) may be a potential other than 0V.
  • the sensor 12 c detects twisting of the golf club 200 . Therefore, the detection signal SigC is small. Therefore, the signal processing device 10 may further include an amplifier circuit and an ADC.
  • the amplifier circuit amplifies the detection signal SigC to a fourth gain to generate an input signal.
  • the fourth gain is, for example, 100 times.
  • the signal processing circuit 24 may generate the input signal DSig3 based on the input signal amplified to the fourth gain and the input signals Sig5 and Sig6.
  • Signal processing devices 12a to 12c Sensors 14a to 14c: Charge amplifiers 16a to 16c, 18a to 18c: Amplifier circuit 24: Signal processing circuit 26: Communication circuit 32: Antenna 34: Communication device 114: Piezoelectric film 115a: First Electrode 115b: Second electrode 200: Golf club

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

La présente invention concerne un circuit de traitement de signal qui effectue une première étape d'acquisition et une première étape de génération. La première étape d'acquisition est une étape d'acquisition d'un premier signal d'entrée et d'un second signal d'entrée en fonction de la sortie d'un premier capteur permettant de détecter la déformation d'un objet en cours de mesure. La première étape de génération est une étape de génération d'un premier signal de correction en fonction du premier signal d'entrée et du second signal d'entrée. Dans la plage où la valeur absolue de la différence obtenue par la soustraction d'un premier potentiel de référence du potentiel du premier signal de correction est supérieure à un second seuil, la distorsion du premier signal de correction est inférieure à la distorsion du second signal d'entrée dans la plage où la valeur absolue de la différence obtenue par la soustraction du premier potentiel de référence du potentiel du second signal d'entrée est supérieure à un second seuil.
PCT/JP2022/010833 2021-05-28 2022-03-11 Circuit de traitement de signal, dispositif de traitement de signal et programme de traitement de signal WO2022249645A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03295431A (ja) * 1990-04-13 1991-12-26 Honda Motor Co Ltd 半導体センサ
US5792000A (en) * 1996-07-25 1998-08-11 Sci Golf Inc. Golf swing analysis method and apparatus
JPH10244023A (ja) * 1997-03-07 1998-09-14 Nippon Shaft Kk ゴルフスイング解析装置、その解析方法およびゴルフクラブ
WO2016088507A1 (fr) * 2014-12-05 2016-06-09 株式会社村田製作所 Module de capteur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03295431A (ja) * 1990-04-13 1991-12-26 Honda Motor Co Ltd 半導体センサ
US5792000A (en) * 1996-07-25 1998-08-11 Sci Golf Inc. Golf swing analysis method and apparatus
JPH10244023A (ja) * 1997-03-07 1998-09-14 Nippon Shaft Kk ゴルフスイング解析装置、その解析方法およびゴルフクラブ
WO2016088507A1 (fr) * 2014-12-05 2016-06-09 株式会社村田製作所 Module de capteur

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