Temperature sensor for cables
    1.
    发明授权
    Temperature sensor for cables 失效
    电缆温度传感器

    公开(公告)号:US4610552A

    公开(公告)日:1986-09-09

    申请号:US629256

    申请日:1984-07-09

    CPC分类号: G01K11/06 G01K3/00

    摘要: A temperature sensor is provided comprising a conductor having a low-melting-point, a fibrous insulating layer adjacent the low-melting-point conductor and separating it from a second conductor. An oscillator applying a pulse signal to the sensor and a receiver receiving the pulse signal through the sensor can detect changes in the signal wave form due to melting or distortion of the low-melting-point conductor. The specific temperature to be sensed can be preset by providing preheating of the sensor, as by Joule heating, by passing a current through the low-melting-point conductor.

    摘要翻译: 提供一种温度传感器,包括具有低熔点的导体,与低熔点导体相邻的纤维绝缘层,并将其与第二导体分离。 向传感器施加脉冲信号的振荡器和通过传感器接收脉冲信号的接收器可以检测由于低熔点导体的熔化或失真引起的信号波形的变化。 通过使电流通过低熔点导体,通过焦耳加热提供传感器的预热,可以预先设定要检测的具体温度。

    Directly emitting dielectric transmission line
    4.
    发明授权
    Directly emitting dielectric transmission line 失效
    直接发射介质传输线

    公开(公告)号:US4825221A

    公开(公告)日:1989-04-25

    申请号:US129241

    申请日:1987-12-07

    摘要: Means are provided for radiating electromagnetic waves from a receiving end zone of a dielectric line for transmitting electromagnetic waves without the need for a metal horn antenna or a metal waveguide, and matching problems are thereby substantially avoided. Said means are provided by shaping the end of the line to specified contours, by varying the dielectric constant of the material of the line in a gradient longitudinally near the end zone of the line, and by arranging a reflecting mirror or lens to receive the waves emitted from the line. This waveguide is useful in wireless communications, radar transmission and similar applications.

    摘要翻译: 提供了用于从用于传输电磁波的介质线的接收端区域辐射电磁波而不需要金属喇叭天线或金属波导的装置,从而基本上避免了匹配问题。 所述装置通过将线的端部成形为特定的轮廓,通过在纵向靠近线的端部区域的梯度中改变线的材料的介电常数,并且通过布置反射镜或透镜来接收波 从线上排出。 该波导在无线通信,雷达传输和类似应用中是有用的。

    Corrosive liquid leak detecting sensor
    5.
    发明授权
    Corrosive liquid leak detecting sensor 失效
    腐蚀性液体泄漏检测传感器

    公开(公告)号:US4710353A

    公开(公告)日:1987-12-01

    申请号:US884725

    申请日:1986-07-11

    CPC分类号: G01M3/165 G01M3/047

    摘要: A detector for detecting leaks of a corrosive liquid such as strong acids or bases is provided comprising a light guide core having a covering which generates heat upon contact with the liquid to the detected, thereby changing the light transmissivity of the light guide, which change can be measured. The covering comprises a porous polymer having a salt within its pores such as an ammonium salt which dissolves in the liquid to be detected and generates heat thereby.

    摘要翻译: 提供一种用于检测诸如强酸或碱的腐蚀性液体的泄漏的检测器,包括:导光芯,其具有覆盖物,所述覆盖物在与所检测的液体接触时产生热量,从而改变光导的光透射率, 被测量。 覆盖物包括在其孔内具有盐的多孔聚合物,例如铵盐,其溶解在待检测的液体中并由此产生热量。

    Sensor for detecting the presence and location of a water leak
    7.
    发明授权
    Sensor for detecting the presence and location of a water leak 失效
    用于检测漏水的存在和位置的传感器

    公开(公告)号:US4677371A

    公开(公告)日:1987-06-30

    申请号:US773210

    申请日:1985-09-06

    申请人: Haruo Imaizumi

    发明人: Haruo Imaizumi

    IPC分类号: G01N27/07 G01M3/16 G01R31/08

    CPC分类号: G01M3/165

    摘要: A coaxial cable and a bare wire are aligned in parallel relationship and affixed within insulation covers which have openings therein so as to partly expose both the bare wire and the outer conductor of the coaxial cable at the atmosphere, forming a leak detecting sensor. By the use of resistance meters, the core wire of the coaxial cable is utilized to detect both the presence and the location of a leak.

    摘要翻译: 同轴电缆和裸线平行地对准并固定在其中具有开口的绝缘盖中,以便在大气下部分地暴露同轴电缆的裸线和外导体,形成泄漏检测传感器。 通过使用电阻表,同轴电缆的芯线用于检测泄漏的存在和位置。