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    • 83. 发明授权
    • Elevator control system
    • 电梯控制系统
    • US4213517A
    • 1980-07-22
    • US922430
    • 1978-07-06
    • Koji Ando
    • Koji Ando
    • B66B1/28H02P27/02B66B1/30
    • H02P27/026B66B1/308
    • An elevator control system includes a power source which supplies AC power to an induction motor for driving an elevator car through a first thyristor gate circuit. Another induction motor provided for braking the elevator car is connected to the power source through a second thyristor gate circuit. A tachometer generator connected to the induction motors produces an speed signal indicative of the speed of the elevator car. The speed signal is compared with a reference signal and the difference therebetween is used to control the first and second thyristor gate circuits for controlling the elevator car speed.
    • 电梯控制系统包括:电源,其通过第一晶闸管门电路向用于驱动电梯轿厢的感应电动机提供AC电力。 设置用于制动电梯轿厢的另一感应电动机通过第二晶闸管门电路连接到电源。 连接到感应电动机的转速计发生器产生指示电梯轿厢的速度的速度信号。 将速度信号与参考信号进行比较,并且其差值用于控制用于控制电梯轿厢速度的第一和第二晶闸管门电路。
    • 89. 发明申请
    • Communication antenna and pole with built-in antenna
    • 内置天线通信天线和极
    • US20070273531A1
    • 2007-11-29
    • US11798461
    • 2007-05-14
    • Koji AndoTakehiro Kawai
    • Koji AndoTakehiro Kawai
    • G08B13/14H04Q5/22
    • H01Q3/26H01Q1/2216H01Q21/20
    • An antenna array part constituting a communication antenna is composed of a plurality of antenna elements. The antenna elements are arranged on an arc. This allows radio waves to be irradiated also in the exact transverse direction of the antenna array part, thereby making available the communications with an RFID tag positioned in the exact transverse direction. By shifting the phase of a radio frequency signal supplied to each antenna element or adjusting the amplitude of the radio frequency signal, it is possible to change the direction of radio beams irradiated from the antenna array part or expand the width of the radio beams thus making available with RFID tags present in a wider area.
    • 构成通信天线的天线阵列部分由多个天线元件构成。 天线元件布置在弧形上。 这样也能够在天线阵列部分的精确的横向上照射无线电波,从而使得与位于精确横向方向的RFID标签的通信成为可能。 通过移动提供给每个天线元件的射频信号的相位或调节射频信号的幅度,可以改变从天线阵列部分照射的无线电波束的方向或扩大无线电波束的宽度,从而使得 可用于存在于更广泛区域的RFID标签。
    • 90. 发明授权
    • Engine ignition system having noise protection circuit
    • 发动机点火系统具有噪声保护电路
    • US07207325B2
    • 2007-04-24
    • US11194477
    • 2005-08-02
    • Koji Ando
    • Koji Ando
    • F02P3/05F02P3/055
    • F02P3/0554
    • An ignition system for an internal combustion engine includes a switch circuit connected to an ignition coil to switch on or off current supplied to the ignition coil, a control circuit for providing a control signal for controlling the switch circuit based on the ignition signal and a protection circuit including an input terminal that receives the ignition signal, an NPN transistor having a collector connected to the input terminal, an emitter connected to a ground, a base and the collector and a parasitic diode between the collector and the emitter of the NPN transistor, in which a prescribed capacitance is formed between the base and the collector of the NPN transistor. If an electric surge that has an ascending slope comes into the input terminal, the NPN transistor to turn on to discharge the electric surge to a ground. If an electric surge that has an descending slope comes into the input terminal, it passes through the parasitic diode toward the input terminal.
    • 一种用于内燃机的点火系统包括连接到点火线圈的开关电路,以接通或断开供应到点火线圈的电流;控制电路,用于根据点火信号和保护来提供用于控制开关电路的控制信号 包括接收点火信号的输入端子,具有连接到输入端子的集电极的NPN晶体管,连接到地的发射极,基极和集电极以及NPN晶体管的集电极和发射极之间的寄生二极管, 其中在NPN晶体管的基极和集电极之间形成规定的电容。 如果具有上升斜坡的电涌进入输入端,则NPN晶体管导通以将电涌放电到地。 如果具有下降斜坡的电涌进入输入端,则其通过寄生二极管朝向输入端。