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    • 41. 发明授权
    • Apparatus for measuring the ratio of alcohol contained in mixed fuel
    • 用于测量混合燃料中所含醇的比率的装置
    • US4651085A
    • 1987-03-17
    • US597097
    • 1984-04-05
    • Takashi SakuraiHiroshi MizunoYoshihisa Shibata
    • Takashi SakuraiHiroshi MizunoYoshihisa Shibata
    • G01N22/00G01N33/28G01R27/04G01R27/26
    • G01N33/2852G01N22/00
    • An apparatus for measuring the ratio of alcohol contained in mixed fuel which flows through a fuel pipe to the engine. The fuel pipe is made of a high frequency signal permeable material such as rubber, teflon or nylon, for example. A microwave chamber is provided outside the fuel pipe, enclosing a part of the fuel pipe. The microwave chamber comprises a pair of wave guides opposed to each other with the fuel pipe interposed between them. One of the wave guides is provided with an antenna section for transmitting microwaves received from a microwave generator. The other wave guide is provided with a receiving antenna section for receiving the microwaves permeating through the fuel pipe through which the mixed fuel is flowing. The microwaves passing through the fuel pipe are attenuated according to the amount of alcohol in the fuel. The microwaves received by the antenna section are detected by a detector and converted to DC voltage signals which correspond to the strengths of the microwaves received and thus the amount of alcohol in the fuel.
    • 一种用于测量流经燃料管的混合燃料中所含的醇与发动机的比例的装置。 燃料管由例如橡胶,特氟隆或尼龙等高频信号透过材料制成。 在燃料管外部设置微波室,其包围燃料管的一部分。 微波室包括一对彼此相对的波导,燃料管插在它们之间。 波导中的一个设置有用于发送从微波发生器接收的微波的天线部分。 另一个波导设置有接收天线部分,用于接收透过混合燃料流过的燃料管的微波。 通过燃料管的微波根据燃料中的酒精量而减弱。 由天线部分接收的微波被检测器检测并转换成对应于所接收的微波的强度和因此燃料中的醇的量的直流电压信号。
    • 44. 发明授权
    • Variable impedance detecting circuit for a telephone line auxiliary
device
    • 用于电话线辅助设备的可变阻抗检测电路
    • US4092496A
    • 1978-05-30
    • US730564
    • 1976-10-07
    • Shizuo AndoHiroshi Mizuno
    • Shizuo AndoHiroshi Mizuno
    • H04M1/00H04M1/64H04M1/654
    • H04M1/654
    • An automatic telephone answering device includes a diode bridge rectifier having its input terminals connected across a pair of telephone lines through a first switch, and its output terminals connected across a relay coil through a voltage controlled impedance, such as a Zener diode. A relatively high frequency, high voltage call signal is rectified by the bridge and breaks down the diode to energize the relay coil. This closes a relay switch to actuate a control circuit, whose outputs a) actuate a tape recorder unit to play back a prerecorded message to the caller, and b) simultaneously transfer the first switch to connect the tape recorder unit across the telephone lines through a line transformer. The breakdown voltage of the Zener diode is selected to be above the voltage level produced by sound (conversation) signals and busy tone signals, whereby the device presents a high impedance to such signals and is not actuated thereby.
    • 自动电话应答装置包括二极管桥式整流器,其二极管整流器的输入端通过第一开关连接在一对电话线上,其输出端通过诸如齐纳二极管之类的压控阻抗连接在继电器线圈上。 相对高频率的高电压呼叫信号由桥进行整流,分解二极管以使继电器线圈通电。 这将闭合一个继电器开关,以启动一个控制电路,其输出a)启动一个磁带录音机单元向主叫方播放预先录制的信息,以及b)同时传送第一个开关,通过一个电话线连接磁带录音机单元 线路变压器。 齐纳二极管的击穿电压被选择为高于由声音(对话)信号和忙音信号产生的电压电平,由此该装置对这种信号呈现高阻抗,并且由此不致动。