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    Vorrichtung zur Messung von Geschwindigkeit und Wegstrecke bei Skiern
    14.
    发明公开
    Vorrichtung zur Messung von Geschwindigkeit und Wegstrecke bei Skiern 失效
    Vorrichtung zur Messung von Geschwindigkeit und Wegstrecke bei Skiern。

    公开(公告)号：EP0416382A1

    公开(公告)日：1991-03-13

    申请号：EP90116199.2

    申请日：1990-08-24

    Applicant: Severin, Jürgen

    Inventor： Severin, Jürgen

    IPC: G01S15/60

    CPC classification number: G01S15/60

    Abstract: Die angemeldete Vorrichtung dient der Messung von Geschwindigkeit und zurückgelegter Strecke beim Skilaufen. Am Ski befinden sich, nach unten gerichtet, ein Sender und ein Empfänger von Ultraschallwellen. Je nach Gleitgeschwindigkeit weicht die empfangene Frequenz von der gesendeten ab(Doppler-Effekt). Das Ausmaß der gemessenen Frequenzabweichung läßt einen Rückschluß auf die Geschwindigkeit zu. In Verbindung mit einer Zeitmessung läßt sich auch der Weg errechnen. Angesichts der nur begrenzten Anforderungen an die Exaktheit der Meßergebnisse kann die anlage klein genug für einen Einbau in den Ski sein. Als "Rechner" dient ein Chip, die Anzeige erfolgt auf Knopfdruck auf einem Display. Energiequelle ist eine Batterie.

    Abstract translation: 该装置用于测量在滑雪中行驶的速度和距离。 在滑雪板上，定位有超声波发射器和接收器，向下指向。 根据滑动速度，接收频率偏离发射频率（Doppler效应）。 测量的频率偏差的程度允许推断速度。 与时间测量有关，也可以计算距离。 鉴于测量结果的准确性要求仅受到限制，系统可以足够小以安装在滑雪板中。 芯片被用作“计算机”，结果在按下按钮时显示在显示屏上。 电池是电源。

    Velocity measuring correlation sonar apparatus
    16.
    发明公开
    Velocity measuring correlation sonar apparatus 失效
    用于通过相关速度测量声纳装置。

    公开(公告)号：EP0010974A1

    公开(公告)日：1980-05-14

    申请号：EP79302418.3

    申请日：1979-11-02

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Dickey, Frank Ramsey

    IPC: G01S15/60 ,  G06F15/336

    CPC classification number: G01P5/24 ,  G01S15/60

    Abstract: Thevelocity measuring correlation sonar disclosed employs a planar array of receiving transducers (33 to 36) spaced in the directions (V X and Vy) along which velocity components parallel to the plane of the array are to be measured, and includes means (31) for transmitting a series of two or more identical pulses which are separated by a time interval selected in accordance with transducer separation and the estimated velocity components so as to place the expected point of maximum correlation of the echo return from one pulse with that from a following pulse within the boundaries of a set of spatial sample points representing relative spacings between pairs of receiving transducers. Correlation measurements are made (at 63) corresponding to these relative spacings of the receiving transducers, with each such measurement being treated as a sample of a space-time correlation function of predetermined shape. The location of the peak of this function in each of the directions of interest is estimated by curve fitting techniques, and yields the velocity vector in that direction scaled by the inter-pulse time interval. The velocity component normal to the plane of the array may be derived by estimating the location of the correlation peak as a function of time and/or phase, using similar curve fitting techniques.

    VESSEL SPEED MEASUREMENT DEVICE AND VESSEL SPEED MEASUREMENT METHOD
    17.
    发明公开
    VESSEL SPEED MEASUREMENT DEVICE AND VESSEL SPEED MEASUREMENT METHOD 审中-公开

    公开(公告)号：EP4254010A1

    公开(公告)日：2023-10-04

    申请号：EP23158844.3

    申请日：2023-02-27

    Applicant: Furuno Electric Company Limited

    Inventor： KAWANAMI, Satoshi ,  MUSHIAKE, Masahiko

    IPC: G01S15/60 ,  G01P5/24

    Abstract: The vessel speed measurement device (1) includes a transducer (20) that transmits ultrasonic waves into water and receives reflected waves of ultrasonic waves, and a signal processing circuit (110) that calculates the speed through water of the vessel on which the transducer (20) is installed, based on the reception signal output from the transducer (20). A target depth at which the speed through water in the vertical direction is substantially zero is identified based on the reception signal. The speed through water in the horizontal direction is acquired with respect to the target depth as the speed through water.

    DOPPLER DEVICE, DEPRESSION ANGLE ESTIMATION METHOD, AND PROGRAM
    18.
    发明公开
    DOPPLER DEVICE, DEPRESSION ANGLE ESTIMATION METHOD, AND PROGRAM 审中-公开

    公开(公告)号：EP4254009A1

    公开(公告)日：2023-10-04

    申请号：EP21897564.7

    申请日：2021-10-21

    Applicant: FURUNO ELECTRIC CO., LTD.

    Inventor： KAWANAMI, Satoshi ,  MUSHIAKE, Masahiko

    IPC: G01S15/60 ,  G01K11/24

    Abstract: The purpose is to provide a Doppler device, a depression angle estimation method, and a program capable of obtaining sound velocity or temperature in water at a low cost and in real time. The Doppler device generates a first echo signal in a first direction d1 making a depression angle θ with a receiving surface 11a of a transducer 11 from a reflected wave of an ultrasonic wave, generates a second echo signal from the reflected wave in a second direction d2 making the depression angle θ with the receiving surface 11a, the second direction d2 being different from the first direction d1, and further generates a third echo signal from the reflected wave in a third direction d3 perpendicular to the receiving surface 11a. The Doppler device calculates a first Doppler frequency of the first echo signal, calculates a second Doppler frequency of the second echo signal, and calculates a third Doppler frequency of the third echo signal. The Doppler device calculates the depression angle θ from the first Doppler frequency, the second Doppler frequency and the third Doppler frequency.

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