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    • 1. 发明申请
    • MOTOR DRIVING DEVICE
    • 电机驱动装置
    • WO1997038487A1
    • 1997-10-16
    • PCT/JP1997001276
    • 1997-04-11
    • CITIZEN WATCH CO., LTD.HIGUCHI, HaruhikoICHIKAWA, MasakazuKIHARA, HiroyukiMURAKAMI, TomomiTSUCHIYA, Hidetaka
    • CITIZEN WATCH CO., LTD.
    • H02P08/00
    • H02P6/20H02P8/02H02P8/08
    • A phase locked driving type motor is reliably started and stably rotated. A motor driving device is provided with a stepper motor constituted at least of a bipolar stator, a rotor with a bipolar permanent magnet, and a driving coil magnetically coupled to the stator, a driving pulse generating means which outputs a driving pulse signal for driving the stepper motor, a driving circuit which supplies a driving current to the driving coil according to the signal from the driving pulse generating means, a voltage detecting circuit which detects the back electromotive voltage generated by the rotation of the rotor, and a magnetic pole position detecting means which detects the position of the magnetic pole of the rotating rotor with respect to the stator based on the detection signal of the voltage detecting circuit. The driving pulse generating means controls the outputting timing of the driving pulse signal based on the detection signal of the pole position detecting means used. The magnetic pole position detecting means stops the output of the driving pulse signal based on the signal detected by means of the voltage detecting circuit while the driving pulse signal is outputted and, at the same time, causes a driving pulse signal whose phase is opposite to that of the driving pulse signal to be outputted. The phase locked driving type motor is started reliably, accelerated quicky, and rotated stably. A higher-performance motor driving circuit can be realized by combining embodiments. Moreover, high-speed high-torque rotation of the motor is realized with a simple system constitution without changing the structure of a conventional flat type bipolar motor.
    • 锁定驱动型电动机可靠地启动并稳定旋转。 电动机驱动装置设置有至少由双极性定子构成的步进电动机,具有双极型永久磁铁的转子和与该定子磁耦合的驱动线圈,驱动脉冲发生装置输出驱动脉冲信号 步进电机,根据来自驱动脉冲发生装置的信号向驱动线圈提供驱动电流的驱动电路,检测由转子旋转产生的反电动势电压的电压检测电路和磁极位置检测 基于电压检测电路的检测信号来检测旋转转子的磁极相对于定子的位置的装置。 驱动脉冲发生装置根据所使用的磁极位置检测装置的检测信号来控制驱动脉冲信号的输出定时。 磁极位置检测装置在输出驱动脉冲信号的同时基于通过电压检测电路检测到的信号来停止驱动脉冲信号的输出,同时使相位相反的驱动脉冲信号 驱动脉冲信号的输出。 锁定驱动型电动机可靠地启动,加速快速并且稳定地旋转。 可以通过组合实施例来实现更高性能的电动机驱动电路。 此外,通过简单的系统结构实现电动机的高速高扭矩旋转,而不改变传统平面型双极电动机的结构。
    • 2. 发明申请
    • ELECTRONIC TIMEPIECE
    • 电子计时器
    • WO1998009202A1
    • 1998-03-05
    • PCT/JP1997003034
    • 1997-08-29
    • CITIZEN WATCH CO., LTD.MURAKAMI, TomomiICHIKAWA, MasakazuMIYAUCHI, Norio
    • CITIZEN WATCH CO., LTD.
    • G04C10/04
    • G04G19/08G04C10/04G04C21/02
    • An electronic timepiece includes a time measuring circuit for counting reference signals from a reference signal generation circuit and outputting time information, report means for reporting a specific time to the user by vibration or by a buzzer on the basis of the time information outputted from this time measuring circuit, and time state detection means for stopping the report operation of the report means when the detection value is different from a predetermined value. When the time state detection means detects a low temperature of the timepiece and a low voltage of a power source voltage, timings of the time information outputted from the time measuring circuit are made mutually different and are also made different from a time information timing at the normal time. In this way, the consumption of a battery due to unnecessary report is prevented and the state of the timepiece is reported to the user by an operation of hands.
    • 电子钟表包括用于对来自参考信号产生电路的参考信号进行计数并输出时间信息的时间测量电路,用于通过振动或蜂鸣器根据从该时间输出的时间信息向用户通知特定时间的报告装置 测量电路和时间状态检测装置,用于当检测值不同于预定值时停止报告装置的报告操作。 当时间状态检测装置检测到时钟的低温和电源电压的低电压时,从时间测量电路输出的时间信息的定时相互不同,并且也与时间信息定时不同 正常时间 以这种方式,可以防止由于不必要的报告而导致的电池的消耗,并且通过手的操作向使用者报告手表的状态。