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    • 2. 发明授权
    • Capacitance sensing device
    • 电容传感装置
    • US4354219A
    • 1982-10-12
    • US249863
    • 1981-04-01
    • Sigeyuki Akita
    • Sigeyuki Akita
    • G01R27/26H01G7/00
    • G01R27/2605
    • A capacitance sensing device for detecting the amount of material flowing through a passage includes layers of disk-shaped insulating substrates having electrode films formed on surfaces thereof facing each other, and the insulating substrates are supported by an insulating support member as a unit and spaced from each other. The electrode films are alternately connected by a pair of conductors to form a capacitor. Electric circuit elements, forming a detection circuit which is connected to the pair of conductors and which detects a change in capacitance of the capacitor depending on the amount of material flowing through the spaces between the electrode films, are formed on the outer surface of an outermost one of the substrates in a form of a monolithic circuit or a hybrid circuit.
    • 用于检测流过通道的材料量的电容感测装置包括具有彼此面对的在其表面上形成有电极膜的盘形绝缘基板层,绝缘基板由作为一个单元的绝缘支撑构件支撑, 彼此。 电极膜通过一对导体交替连接以形成电容器。 电路元件形成检测电路,该检测电路与一对导体连接,并根据流过电极膜之间的空间的材料量来检测电容器的电容变化。 单片电路或混合电路形式的基板之一。
    • 5. 发明授权
    • Liquid level detecting apparatus
    • 液面检测装置
    • US4110740A
    • 1978-08-29
    • US764458
    • 1977-01-31
    • Sigeyuki AkitaJunji Kitagawa
    • Sigeyuki AkitaJunji Kitagawa
    • G01F23/24G08B21/00
    • G01F23/243
    • A liquid level detecting apparatus for detecting the level of a conductive liquid, comprises a pair of electrodes which are either connected with or disconnected from each other depending on the liquid level, an oscillation circuit which is variable in the state of its oscillation signal in response to the variation in impedance between the pair of electrodes and applies between the pair of electrodes an AC signal in synchronism with the oscillation signal, and a switching circuit which detects the liquid level in response to the oscillation signal, whereby dissolution of ions from the electrode into the liquid is prevented.
    • 用于检测导电液体的液位的液位检测装置包括一对根据液位彼此连接或断开的电极,响应于其振荡信号的状态可变的振荡电路 对于一对电极之间的阻抗的变化,并且在一对电极之间施加与振荡信号同步的AC信号,以及开关电路,其响应于振荡信号检测液位,由此离子从电极的溶解 进入液体被阻止。
    • 6. 发明授权
    • Liquid level detecting apparatus
    • 液面检测装置
    • US4080828A
    • 1978-03-28
    • US778583
    • 1977-03-17
    • Sigeyuki AkitaShuzo Yoshida
    • Sigeyuki AkitaShuzo Yoshida
    • G01F23/68G01F23/26
    • G01F23/68
    • The oscillation frequency of the output signal of a ring oscillator is changed in response to a change in the relative position between the coil in the ring oscillator and a float including a conductive member and vertically movable in accordance with changes in the level of a liquid to be measured. The amount of electric power consumed by the ring oscillator itself is changed in accordance with changes in the oscillation frequency of the oscillator output signal. The power consumption of the ring oscillator is detected in accordance with the voltage across a resistor inserted in the power line from the electric power source to the ring oscillator, so that when this voltage attains a predetermined value, an indicator designed to indicate that the liquid level has attained a predetermined level is brought into operation.
    • 环形振荡器的输出信号的振荡频率响应于环形振荡器中的线圈与包括导电构件的浮子之间的相对位置的变化而变化,并且可以根据液体水平的变化而垂直移动至 被测量。 环形振荡器本身消耗的电力量根据振荡器输出信号的振荡频率的变化而改变。 根据插入到从电源到环形振荡器的电力线中的电阻器两端的电压来检测环形振荡器的功率消耗,使得当该电压达到预定值时,设计用于指示液体 水平达到预定水平已投入运行。
    • 7. 发明授权
    • Ultrasonic wave transmitting and receiving device for vehicles
    • 车载超声波发射和接收装置
    • US4442512A
    • 1984-04-10
    • US255275
    • 1981-04-17
    • Masao KoderaSigeyuki Akita
    • Masao KoderaSigeyuki Akita
    • B60G17/0165G01S15/93
    • G01S15/931B60G17/0165G01S2015/938Y10S181/40Y10S367/909
    • An ultrasonic wave transmitter and receiver adapted to be mounted on the rear portion of a vehicle to detect the distance between the rear end of the vehicle and any obstruction located at the rear side of the vehicle. The ultrasonic wave transmitter and receiver includes an ultrasonic transducer attached to a lower part of the vehicle at a portion spaced from the rear end of the vehicle in the forward direction of the vehicle by a predetermined distance, a horn opening rearwardly from the vehicle and a wave guide tube through which the horn and the ultrasonic transducer are coupled to each other. The distance between the ultrasonic transducer and the rear end of the vehicle is selected to correspond to a time length which is long enough to sufficiently attenuate the residual oscillation of the ultrasonic transducer.
    • 一种适于安装在车辆后部的超声波发射器和接收器,用于检测车辆后端与位于车辆后侧的任何障碍物之间的距离。 超声波发射器和接收器包括:超声波传感器,其安装在车辆下部的与车辆后端间隔开距离车辆前方一定距离的部分;从车辆向后方的喇叭口; 波导管,喇叭和超声波换能器通过它们彼此耦合。 选择超声波换能器与车辆后端之间的距离,以对应于足够长以充分衰减超声换能器的残余振荡的时间长度。