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公开(公告)号：US4326851A
公开(公告)日：1982-04-27
申请号：US200142
申请日：1980-10-24
CPC分类号： G01N35/1009 , G01F23/265 , G01N2035/1025 , G01N2035/1086 , G01N35/1004
摘要： A level sensor of a fluid transfer mechanism for determining when the bottom tip of a fluid aspirating probe touches or contacts the top surface of a sample fluid. The level sensor senses the contact capacitively by grounding one plate of a capacitor through the sample fluid and fluid aspirating probe. One capacitor plate is formed of an electrode biased against the bottom of a rotatable supply tray and positioned under a sample containing cavity in the tray. The other capacitor plate is formed by the bottom surface of the sample fluid in the supply cavity, and the dielectric of the capacitor is formed of the supply tray material. An AC signal is applied to the electrode and the probe is grounded. The change in voltage occurring in the AC signal at the electrode when the probe touches the top surface of the sample fluid it is sensed to provide the touch signal.
摘要翻译： 流体传送机构的液位传感器用于确定流体抽吸探针的底部尖端何时接触或接触样品流体的顶表面。 电平传感器通过将样品流体和流体抽吸探头的电容器的一个接地板接地来感测接触电容。 一个电容器板由电极偏置在可旋转的供给托盘的底部并且位于托盘内的样品容纳腔的下方形成。 另一个电容器板由供给腔中的样品流体的底表面形成，并且电容器的电介质由供给盘材料形成。 将AC信号施加到电极并且探针接地。 当探针接触样品流体的顶表面时，在电极处的AC信号中发生的电压的变化被感测以提供触摸信号。
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公开(公告)号：US4308231A
公开(公告)日：1981-12-29
申请号：US177092
申请日：1980-08-11
CPC分类号： G01N21/253
摘要： An optical timing and A/D conversion method and apparatus for converting analog signals obtained by movement of a plurality of reaction vessels relative to one or more beams of light from analog to digital signals. The sample signals are obtained each time a reaction vessel passes through a beam of light. The converted digital signals indicate the absorbance of the respective vessels and their contents. Each of the reaction vessels or cuvettes has translucent wall portions providing a radiation path therethrough for the light beams which may be monitored by photometer means in a chemical reaction analyzer. The vessels are repeatedly passed through the light beams of the photometer means as chemical reactions take place therein, the purpose being to monitor the changes in the reaction of the fluids therein by measuring the changes in the absorbance of the vessel and fluids. The sample interval of the analog signal is repeatable for each vessel for each light beam and may be shifted to select the best portion of the analog signal generated as the vessel passes through the particular light beam. The A/D conversion also may eliminate the dark sample or noise error between the light beams and the reaction vessels and may eliminate the variations in the sample signals caused by changes in the rate of relative movement between the beams and vessels and changes in the velocity of the rotating beam.
摘要翻译： 一种光学定时和A / D转换方法和装置，用于转换通过多个反应容器相对于一个或多个光束从模拟信号到数字信号的移动获得的模拟信号。 每当反应容器通过光束时，获得样品信号。 转换的数字信号表示各个血管的吸光度及其含量。 每个反应容器或比色皿具有透光壁部分，为通过其中的光束提供通过其的光束，该光束可在化学反应分析仪中由光度计装置监测。 当化学反应发生时，容器被重复地通过光度计装置的光束，其目的是通过测量容器和流体的吸光度的变化来监测其中的流体的反应变化。 模拟信号的采样间隔对于每个光束的每个容器是可重复的，并且可以移位以选择当容器通过特定光束时产生的模拟信号的最佳部分。 A / D转换还可以消除光束和反应容器之间的暗样本或噪声误差，并且可以消除由光束和容器之间的相对运动速率的变化引起的样本信号的变化以及速度的变化 的旋转光束。
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3.发明授权公开(公告)号：US06190566B1
公开(公告)日：2001-02-20
申请号：US09103305
申请日：1998-06-23
申请人： Steven N. Kolber
发明人： Steven N. Kolber
IPC分类号： C02F104
CPC分类号： A01K1/0103 , C02F1/04 , C02F1/78 , C02F2103/20 , Y02W10/37 , Y02W10/40
摘要： Noxious odors and water pollution commonly associated with the raising of hogs, cattle or poultry under confined conditions are eliminated by replacing the conventional waste lagoon and waste spreading fields with a wastewater treatment plant. The treatment plant extracts manure from the wastewater, then dries and burns the manure along with collected waste gases. The liquid waste portion is filtered, deodorized and then recirculated to the growing buildings as flushwater.
摘要翻译： 通过用污水处理厂代替传统的废水池和废弃物扩散区，可以消除通常在密闭条件下养殖猪，牛或家禽造成的有害气味和水污染。 处理厂从废水中提取粪便，然后与收集的废气一起干燥和燃烧粪便。 液体废物部分被过滤，除臭，然后再循环到生长建筑物作为冲洗水。
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公开(公告)号：US4305723A
公开(公告)日：1981-12-15
申请号：US200144
申请日：1980-10-24
CPC分类号： G01N21/253 , G01N2201/0415 , Y10T436/113332
摘要： The characteristics of a sample body fluid are determined in a chemical analyzer by sensing the transmittance of light by the sample fluid and reagents during a reaction period. A beam of light is directed onto a cuvette containing the sample body fluid and reagent. A portion of the light is absorbed by the cuvette, the sample fluid and reagent. The remainder of the light is transmitted to a sensor which provides an analog electrical transmittance signal proportional thereto. The analog signal is logarithmically amplified, and is applied to a peak detector. A structure adjacent the cuvette provides a strobe signal such that the analog signal always has a peak amplitude during the strobe signal. The peak detector senses the peak amplitude of the analog signal during the strobe signal and the peak amplitude is converted to a digital value representing absorbance.
摘要翻译： 在化学分析仪中通过在反应期间感测样品流体和试剂的光的透射率来确定样品体液的特性。 光束被引导到含有样品体液和试剂的比色皿上。 一部分光被比色皿，样品液和试剂吸收。 剩余的光被传输到传感器，该传感器提供与其成比例的模拟电透过率信号。 模拟信号对数放大，并应用于峰值检测器。 与比色皿相邻的结构提供选通信号，使得模拟信号在选通信号期间总是具有峰值幅度。 峰值检测器检测选通信号期间模拟信号的峰值幅度，峰值振幅转换为表示吸光度的数字值。
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