阅读说明：本技术 流体传感器、用于测试样品的系统和方法 (Fluid sensor, system and method for testing a sample ) 是由 A·尼迈耶 G·布鲁克曼 J·穆斯塔法 于 2019-09-27 设计创作，主要内容包括：本发明涉及一种流体传感器,用于检测流体系统的传感器部分中的内容物变化,特别是液体前缘,其中所述流体传感器包括至少一个传感器电极,所述传感器电极具有电极电势和电容特性,所述传感器电极因此能够在被充电时在由所述传感器电极形成的电场中储存电能,使得所述电极电势相应地改变,其中当所述内容物变化时,所述传感器电极的电容值发生变化,其中所述流体传感器包括评估电子器件,所述评估电子器件包括在下文中被称为UED的单向电气设备、和交流电源,其中所述交流电源经由所述UED联接到所述传感器电极,以对所述传感器电极充电,并且其中所述评估电子器件包括联接到所述传感器电极的放电路径,用于对所述传感器电极放电。本发明还涉及一种具有这种流体传感器的系统和一种方法。(The invention relates to a fluid sensor for detecting a content change, in particular a liquid front, in a sensor part of a fluid system, wherein the fluid sensor comprises at least one sensor electrode having an electrode potential and a capacitive property, which sensor electrode is thus capable of storing electrical energy in an electric field formed by the sensor electrode when charged such that the electrode potential changes accordingly, wherein a capacitance value of the sensor electrode changes when the content changes, wherein the fluid sensor comprises evaluation electronics comprising a unidirectional electrical device, hereinafter referred to as UED, and an alternating current source, wherein the alternating current source is coupled to the sensor electrode via the UED for charging the sensor electrode, and wherein the evaluation electronics comprises a discharge path coupled to the sensor electrode, for discharging the sensor electrode. The invention also relates to a system having such a fluid sensor and to a method.)