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    • 12. 发明申请
    • Ultrasonic diagnostic apparatus
    • 超声波诊断仪
    • US20070123777A1
    • 2007-05-31
    • US10562319
    • 2004-06-24
    • Yoshinobu WatanabeYoshinao TannakaTakao SuzukiHisashi HagiwaraKazuhiro Sunagawa
    • Yoshinobu WatanabeYoshinao TannakaTakao SuzukiHisashi HagiwaraKazuhiro Sunagawa
    • A61B8/00
    • A61B8/0858A61B5/02007
    • An ultrasonic diagnostic apparatus includes a transmission unit that transmits at least one ultrasonic pulse from a surface of a skin of a subject toward a blood vessel (21) thereof, a reception unit (3) that receives an ultrasonic echo reflected by the blood vessel and converts the same into an electric signal to obtain a signal of the ultrasonic echo along a depth direction from the surface of the skin, a movement detection unit (5) that analyzes a phase of the ultrasonic echo signal in a direction traversing the blood vessel so as to calculate a movement amount in each of a plurality of parts included in a blood vessel wall constituting the blood vessel and a vicinity of the blood vessel wall, and a boundary detection unit (7) that detects a boundary position between the blood vessel wall and a blood flow region (22) in a lumen of the blood vessel through which blood flows based on a variation in the calculated movement amount in each part. Instability occurring when a brightness signal in image data is used can be eliminated, so that a state of a blood vessel, such as an IMT value, can be measured correctly using ultrasonic waves.
    • 一种超声波诊断装置,包括从被检体的皮肤表面向其血管(21)发送至少一个超声波脉冲的发送部,接受由血管反射的超声回波的接收部(3),以及 将其转换为电信号以从皮肤表面沿着深度方向获得超声回波的信号;移动检测单元(5),其在穿过血管的方向上分析超声回波信号的相位, 计算包括在构成血管的血管壁和血管壁附近的多个部位的移动量的边界检测部(7),其检测血管壁 以及基于每个部分中计算出的移动量的变化的血液流过的血管内腔中的血流区域(22)。 可以消除使用图像数据中的亮度信号时发生的不稳定性,从而可以使用超声波正确地测量诸如IMT值的血管状态。
    • 14. 发明授权
    • Washing machine motor drive device
    • 洗衣机电机驱动装置
    • US06737828B2
    • 2004-05-18
    • US10187199
    • 2002-07-02
    • Mitsuyuki KiuchiNorimasa KondoSadayuki TamaeHisashi Hagiwara
    • Mitsuyuki KiuchiNorimasa KondoSadayuki TamaeHisashi Hagiwara
    • H02P504
    • D06F39/003D06F37/304H02P6/085H02P21/06H02P21/36H02P27/08Y02B40/52
    • A washing machine motor drive device drives a motor using an inverter circuit, which implements a constant torque control through a change in the torque-revolution speed characteristic of the motor. This facilitates an easy control of braking torque (negative torque), thereby providing a maximized braking torque. An easy control of regenerative energy is also provided, and back electromotive force is consumed by the internal resistance of the motor. Practically described, DC power of a rectifier circuit connected to an alternating current source is converted by an inverter circuit into AC power for driving the motor for operating an agitator or a washing/spinning tub. Motor rotor position is detected by rotor position detector, motor current is detected by current detector, and a control device controls the inverter circuit for resolving the motor current into a current component corresponding to magnetic flux and a current component corresponding to torque. At a motor braking operation, the current component corresponding to magnetic flux and the current component corresponding to torque are controlled independently. As a result, the torque at high speed revolution can be increased, or the efficiency at low speed revolution can be improved. This leads to the use a downsized and energy-conscious motor, and contributes to the prevention of an abnormal rise of DC voltage in the inverter circuit.
    • 洗衣机电机驱动装置使用逆变器电路驱动电动机,其通过电动机的转矩转速特性的变化实现恒定的转矩控制。 这容易控制制动转矩(负转矩),从而提供最大的制动转矩。 还提供了对再生能量的容易控制,并且反电动势被电动机的内部电阻消耗。 实际上,连接到交流电源的整流电路的直流电力由逆变器电路转换成用于驱动用于操作搅拌器或洗涤/旋转槽的电动机的交流电力。 电机转子位置由转子位置检测器检测,电机电流由电流检测器检测,控制装置控制变频器电路,将电机电流分解成与磁通相对应的电流分量和与转矩对应的电流分量。 在电动机制动操作中,独立地控制对应于磁通量的电流分量和对应于转矩的电流分量。 结果,可以提高高速旋转时的转矩,或者可以提高低速旋转的效率。 这导致使用小型化和节能型电动机,并且有助于防止逆变器电路中的直流电压的异常升高。