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    • 14. 发明授权
    • Optical sensing system with averaging circuit
    • 具有平均电路的光学感测系统
    • US4914288A
    • 1990-04-03
    • US229890
    • 1988-10-11
    • John P. Dakin
    • John P. Dakin
    • G01K3/02G01K11/32
    • G01K3/02G01K11/32
    • A multi channel averaging circuit for use with an optical sensing system utilizing back-scattering light for establishing the scattering profile along a fibre sensor, e.g. to determine the temperature distribution along the optical fibre sensor. The circuit comprises a number of connected in parallel, charge coupled devices (3-9) energized by a clock (10) and arranged to store successive elements of a signal waveform derived from the back-scattered light. The stored analogue signals are fed sequentially into the averaging circuit (11), sampled, and then digitized by an A to D converter (13).
    • PCT No.PCT / GB87 / 00898 Sec。 371日期:1988年10月11日 102(e)日期1988年10月11日PCT 1987年12月11日PCT公布。 出版物WO88 / 04407 日期:1988年6月16日。一种多通道平均电路,其用于利用反向散射光以沿着光纤传感器建立散射分布的光学感测系统。 以确定沿着光纤传感器的温度分布。 电路包括多个并联连接的电荷耦合器件(3-9),其由时钟(10)激励并被布置成存储从后向散射光导出的信号波形的连续元件。 存储的模拟信号被顺序地馈送到平均电路(11)中,被采样,然后由A到D转换器(13)数字化。
    • 19. 发明授权
    • Temperature averaging device
    • 温度平均装置
    • US4008615A
    • 1977-02-22
    • US572252
    • 1975-04-28
    • Malcolm D. MacMaster
    • Malcolm D. MacMaster
    • F25D9/00F25D29/00F28D15/02G01K3/02G01K7/00F25B49/00G01K1/16
    • F25D29/00F28D15/0233G01K3/02F25D2700/16
    • A temperature sensing device including a conduit or tubular section acting as a condenser extending throughout the interior of a refrigerated environment such as a refrigerated food case with an evaporator section extending to a collection pot located remote from the condenser tube such as under the shelving of freezer cases, the entire tubular section being hermetically sealed with respect to the ambient and filled with refrigerant in fluid flow communication with the collection pot which serves as a reservior for the refrigerant, the refrigerant in the condenser section acting to assume the average temperature reading in the case environment and communicating the reading to the collection pot which has therein a sensing well located below the level of liquid refrigerant in the pot so that a temperature sensing probe, such as a thermistor device, when placed in the well will remotely and accurately monitor the refrigeration requirements of the food case to maintain a predetermined desired average temperature therein.
    • 一种温度感测装置,其包括用作冷凝器的导管或管状部分,该冷凝器延伸到冷藏环境的内部,例如冷藏食品箱,其中蒸发器部分延伸到远离冷凝器管的收集罐,例如在冷冻架 壳体,整个管状部分相对于环境气密密封,并且充满与用作制冷剂储存器的收集罐流体流动连通的制冷剂,冷凝器部分中的制冷剂用于承受平均温度读数 将读数传送到其中具有位于罐内的液体制冷剂水平以下的感测井的收集罐,使得诸如热敏电阻器件的温度感测探针放置在井中时将远程和精确地监测 食品箱的制冷要求保持预先设定 其中有平均温度。