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    • 4. 发明授权
    • Electronic sampling circuit
    • 电子采样电路
    • US6154159A
    • 2000-11-28
    • US129815
    • 1998-08-06
    • Derek LawGraham A. FuggleStephen J. Edwards
    • Derek LawGraham A. FuggleStephen J. Edwards
    • G01N27/414G01N27/416G01N27/48H03M1/12H03M3/04H03M1/00
    • H03M3/00H03M1/12
    • An electronic sampling circuit for determining redox potentials, and consequently specie concentration, in a photographic solution, applies a linear ramp of a square wave voltage to a first electrode (6) immersed in the solution. The current drawn by an adjacent electrode (12) is converted to a voltage for sampling. A pair of sample-and-hold circuits (40,42) store signals sampled at the peak and adjacent trough respectively of a square wave pulse, and a subsequent analogue difference circuit (44) subtracts the two signals. The resulting signal is converted to a digital code by a low cost, low bit count analogue-to-digital converter (46), which is stored on a microprocessor (48). The sampling process is repeated for successive square waves along the ramp. This circuit configuration enables the difference between analogue signals to be measured where the signals differ in amplitude by small amounts but have a wide dynamic range, without the need for an expensive, high bit count analogue-to-digital converter.
    • 用于确定照相溶液中的氧化还原电位,并因此确定特征浓度的电子采样电路向沉浸在溶液中的第一电极(6)施加方波电压的线性斜坡。 由相邻电极(12)引出的电流被转换成用于采样的电压。 一对采样保持电路(40,42)分别存储在方波脉冲的峰值和相邻槽处采样的信号,随后的模拟差分电路(44)减去两个信号。 所得到的信号由存储在微处理器(48)上的低成本,低位计数模数转换器(46)转换成数字代码。 对沿着斜坡的连续方波重复采样过程。 该电路配置使得能够测量模拟信号之间的差异,其中信号幅度小幅度不同但具有宽的动态范围,而不需要昂贵的高位数模数转换器。
    • 5. 发明申请
    • Temperature sensor apparatus
    • 温度传感器装置
    • US20070195859A1
    • 2007-08-23
    • US11358964
    • 2006-02-22
    • Guruprasad KrishnamurthyRamesh AnllkumarDerek Law
    • Guruprasad KrishnamurthyRamesh AnllkumarDerek Law
    • G01K1/00
    • G01K1/14G01K2205/04
    • An apparatus for temperature sensing is disclosed that includes a sensor tube and a cable assembly connected to and extending from said sensor tube wherein said cable assembly communicates electrically with the sensor tube for temperature sensing operations thereof. An O-ring component can be selected based on an inner diameter of said sensor tube and an outer diameter of said cable assembly, wherein said o-ring component is crimped in order to seal and protect said sensor tube from de-alignment and misplacement and located co-axial to said sensor tube and said cable assembly, thereby providing an enhanced mechanical strength and prevention against leakage or ingress of moisture from or to said sensor tube.
    • 公开了一种用于温度感测的装置,其包括传感器管和连接到所述传感器管并从所述传感器管延伸的电缆组件,其中所述电缆组件与用于其感测操作的传感器管电连通。 可以基于所述传感器管的内径和所述电缆组件的外径来选择O形环部件,其中所述O形环部件被压接以便密封和保护所述传感器管不被对准和错位,并且 与所述传感器管和所述电缆组件同轴地设置,从而提供增强的机械强度并防止防止来自或传递到所述传感器管的湿气的渗漏或侵入。
    • 6. 发明授权
    • Temperature sensor apparatus
    • 温度传感器装置
    • US07360947B2
    • 2008-04-22
    • US11358964
    • 2006-02-22
    • Guruprasad KrishnamurthyRamesh AnllkumarDerek Law
    • Guruprasad KrishnamurthyRamesh AnllkumarDerek Law
    • G01K1/08
    • G01K1/14G01K2205/04
    • An apparatus for temperature sensing is disclosed that includes a sensor tube and a cable assembly connected to and extending from said sensor tube wherein said cable assembly communicates electrically with the sensor tube for temperature sensing operations thereof. An O-ring component can be selected based on an inner diameter of said sensor tube and an outer diameter of said cable assembly, wherein said o-ring component is crimped in order to seal and protect said sensor tube from de-alignment and misplacement and located co-axial to said sensor tube and said cable assembly, thereby providing an enhanced mechanical strength and prevention against leakage or ingress of moisture from or to said sensor tube.
    • 公开了一种用于温度感测的装置,其包括传感器管和连接到所述传感器管并从所述传感器管延伸的电缆组件,其中所述电缆组件与用于其感测操作的传感器管电连通。 可以基于所述传感器管的内径和所述电缆组件的外径来选择O形环部件,其中所述O形环部件被压接以便密封和保护所述传感器管不被对准和错位,并且 与所述传感器管和所述电缆组件同轴地设置,从而提供增强的机械强度并防止防止来自或传递到所述传感器管的湿气的渗漏或侵入。