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    • 1. 发明申请
    • SOIL MOISTURE SENSOR
    • 土壤水分传感器
    • WO2007002994A1
    • 2007-01-11
    • PCT/AU2006/000925
    • 2006-07-03
    • SENVIRO PTY LTDDAVIS, Stephen, CharlesJOHNSON, PeterHUBERTS, John
    • DAVIS, Stephen, CharlesJOHNSON, PeterHUBERTS, John
    • G01N27/22G01N33/24G01R27/26
    • G01N27/223G01D5/2405G01N33/246Y10T137/0324
    • A soil moisture sensor which includes a processor to derive soil moisture values and a memory store associated with said processor to store measured values on a periodic basis, wherein the processor scales the stored moisture values to establish a moisture range for the sensor that can be used to calibrate each new reading. The sensor includes a capacitive sensor. In one embodiment the processor measures the capacitance at a single frequency and also measures the phase and amplitude to derive measures of soil impedance due to moisture content and conductivity. In another embodiment the soil sensor capacitor is part of a resonant circuit and the resonant frequency of the circuit is measured as an indication of soil moisture. The sensor is constructed on a single substrate, which also functions as its own insertion stake into the soil.
    • 一种土壤湿度传感器,其包括用于导出土壤水分值的处理器和与所述处理器相关联的存储器存储器,以周期性地存储测量值,其中处理器缩放存储的水分值以建立可以使用的传感器的水分范围 校准每个新的阅读。 该传感器包括电容传感器。 在一个实施例中,处理器以单个频率测量电容,并且还测量相位和幅度以导出由于水分含量和电导率引起的土壤阻抗的测量。 在另一个实施例中,土壤传感器电容器是谐振电路的一部分,并且测量电路的谐振频率作为土壤水分的指示。 传感器构造在单个基板上,也可以作为其自身插入土壤的作用。
    • 2. 发明申请
    • CHEMICAL ANALYSER
    • 化学分析仪
    • WO2008061315A1
    • 2008-05-29
    • PCT/AU2007/001801
    • 2007-11-23
    • AQUALYSIS PTY LTDDAVIS, Stephen, CharlesPETTY, John, DavidHUBERTS, John, Thomas
    • DAVIS, Stephen, CharlesPETTY, John, DavidHUBERTS, John, Thomas
    • B01L3/00G01N21/25G01N21/78G01N31/16G01N33/18G01N33/52
    • G01N31/16G01N21/01G01N21/75G01N21/79G01N35/1002G01N2021/0193G01N2021/8411G01N2035/1058Y10T436/193333
    • A liquid sample is analysed for a target chemical. A sample solution is added to a measurement cell of known volume and a reagent is incrementally added to the cell until a detectable change is observed. A reference compound, of a known concentration, that does not take part in the reaction between the target chemical and reagent, is added to the reagent and by measuring the concentration of the reference compound the amount of reagent used may be determined. A single mechanism introduces a sample, adds reagent mixes cleans and flushes the measurement cell which incorporates a longitudinal chamber having a number of fluid inlets for sample and reagent and an outlet for measured sample/reagent mixtures, a detector being located in or adjacent to said chamber between the inlets and said outlet and a piston movable in said chamber carrying a series of seals such that movement of the piston sequentially opens the inlets and expels the fluid. The analyzer also includes a device for delivering a volume of reagent into a measurement cell incorporating a first port to introduce sample fluid; a second port to allow injection of fluid reagent; and a third port to allow expulsion of sample and sample/reagent mixtures to waste which includes a compressible reservoir of reagent which is positioned within a rigid container, and is surrounded by a fluid which substantially fills the space between said reservoir and the inside wall of said container and means for pressurising said fluid surrounding said reservoir to effect partial collapse of said reservoir in order to inject reagent into said measurement cell.
    • 分析液体样品的目标化学物质。 将样品溶液加入到已知体积的测量单元中,并将试剂逐渐加入到该细胞中直到观察到可检测的变化。 将未参与目标化学品和试剂之间的反应的已知浓度的参考化合物加入到试剂中,并且通过测量参考化合物的浓度,可以确定所用试剂的量。 单个机构引入样品,添加试剂混合物清洗并冲洗测量池,其包含具有用于样品和试剂的多个流体入口的纵向室和用于测量的样品/试剂混合物的出口,检测器位于或邻近所述 所述入口和所述出口之间的腔室和可在所述腔室中移动的活塞承载一系列密封件,使得所述活塞的移动顺序地打开所述入口并排出所述流体。 分析仪还包括用于将一定体积的试剂输送到包含第一端口以引入样品流体的测量池中的装置; 允许注射流体试剂的第二端口; 以及允许将样品和样品/试剂混合物排出到废物的第三端口,废物包括位于刚性容器内的可压缩试剂储存器,并且被基本上填充所述储存器和内壁之间的空间的流体围绕 所述容器和用于对围绕所述储存器的所述流体加压以使所述储存器部分塌陷以将试剂注入所述测量池中的装置。