WO2025220247 - SWIMMING SPEED MEASURING DEVICE AND SWIMMING SPEED MEASURING METHOD
National phase entry is expected:
Publication Number
WO/2025/220247
Publication Date
23.10.2025
International Application No.
PCT/JP2024/034780
International Filing Date
27.09.2024
Title **
[English]
SWIMMING SPEED MEASURING DEVICE AND SWIMMING SPEED MEASURING METHOD
[French]
DISPOSITIF DE MESURE DE VITESSE DE NAGE ET PROCÉDÉ DE MESURE DE VITESSE DE NAGE
Applicants **
FURUNO ELECTRIC CO., LTD.
Inventors
ITO, Masanori
Priority Data
2024-066231
16.04.2024
JP
Application details
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International Searching Authority |
IP India
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1955 | |
| EPO | Filing, Examination, Granting | 11624 | |
| Japan | Filing, Examination, Granting | 2015 | |
| South Korea | Filing, Examination, Granting | 1789 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
22,123
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Abstract[English]
A swimming speed measuring device (1) including a transducer (2), a radial velocity calculating module (13), a distance derivative calculating module (14), and a swimming speed calculating module (15) is disclosed. The transducer (2) is configured to generate echo signals based on ultrasonic pings that are periodically emitted into water and reflected by a swimming object swimming in the water. The radial velocity calculating module (13) is configured to calculate a radial velocity of the swimming object based on a phase difference between two of the echo signals. The distance derivative calculating module (14) is configured to calculate a first derivative of a distance between the swimming object and the transducer with respect to time based on the two echo signals. The swimming speed calculating module (15) is configured to calculate a swimming speed of the swimming object based on the radial velocity and the first derivative of the distance.[French]
L'invention concerne un dispositif de mesure de vitesse de nage (1) comprenant un transducteur (2), un module de calcul de vitesse radiale (13), un module de calcul de dérivée de distance (14) et un module de calcul de vitesse de nage (15). Le transducteur (2) est conçu pour générer des signaux d'écho sur la base de signaux ultrasonores qui sont périodiquement émis dans l'eau et réfléchis par la nage d'un objet nageant dans l'eau. Le module de calcul de vitesse radiale (13) est conçu pour calculer une vitesse radiale de l'objet nageant sur la base d'une différence de phase entre deux des signaux d'écho. Le module de calcul de dérivée de distance (14) est conçu pour calculer une première dérivée d'une distance entre l'objet nageant et le transducteur par rapport au temps sur la base des deux signaux d'écho. Le module de calcul de vitesse de natation (15) est conçu pour calculer une vitesse de nage de l'objet nageant sur la base de la vitesse radiale et de la première dérivée de la distance.