公开(公告)号：US4461175A

公开(公告)日：1984-07-24

申请号：US188744

申请日：1980-09-15

申请人： Hans J. Baumgart ,  Klaus Albrecht ,  Martin Haub

发明人： Hans J. Baumgart ,  Klaus Albrecht ,  Martin Haub

IPC分类号： G01F23/24

CPC分类号： G01F23/24

摘要： An apparatus for measuring liquid level in a container, particularly the fuel tank of a motor vehicle, has a plurality of detector stages for sensing or detecting a plurality of liquid level ranges, whereby an indicator stage can be arranged to indicate a first, normal range of measurement, and a second, precise resolution can be obtained of at least a portion of the overall measurement range, without requiring an excessively larger indicator stage. This is accomplished by arranging at least two groups of sensing elements one above the other in the tank and connecting them to indicator elements via change-over circuits such that one range of measurement is made via one group of sensing elements and a second, more precise range of measurements is made via a second group of sensing elements.

摘要翻译： 一种用于测量容器，特别是机动车辆的燃料箱中的液面的装置，具有多个用于感测或检测多个液位范围的检测器级，由此可以布置指示器台以指示第一正常范围 的测量，并且可以获得整个测量范围的至少一部分的第二精确分辨率，而不需要过大的指示器级。 这是通过在罐中布置至少两组感测元件并将它们连接到指示元件来实现的，所述转换电路使得通过一组感测元件进行一个测量范围，并且通过第二更精确的 通过第二组感测元件进行测量范围。

公开(公告)号：US4425795A

公开(公告)日：1984-01-17

申请号：US273159

申请日：1981-06-12

申请人： Klaus Albrecht ,  Martin Haub

发明人： Klaus Albrecht ,  Martin Haub

IPC分类号： G01F23/24 ,  G01F23/00

CPC分类号： G01F23/24

摘要： A device for the electric monitoring of the level of a liquid contained in a container, comprising at least one temperaturedependent resistance sensor immersed in the liquid the level of which is to be monitored, a constant current source being connectable to the resistance sensor under the control of a program control device controlling a device for detecting and storing the initial voltage drop on the resistance sensor at an initial time and the measurement voltage at a specified time after connection of the constant current source, and a device for evaluating the voltages by subtracting the measurement voltage from the initial voltage and under the circumstances inverting the difference to form a display voltage which corresponds to the level of the liquid. Several of these resistance sensors are arranged at different levels within the container, the sensors being connectable one after the other, controlled by the program control device, to the constant current source and to the device for evaluating the voltage drop on them. A fixed-value storage provides a supply of fixed-value voltages one of which respectively is selectably dependent on the respective resistance sensor active at the time, and an adder is appliable in order to form the display voltage, with the evaluated voltage which is analog to the depth of immersion of the active resistance sensor and with the fixed-value voltage which corresponds to the height of that resistance sensor.

摘要翻译： 一种用于对包含在容器中的液体的电平进行电监测的装置，其包括浸入待监测级别的液体中的至少一个温度依赖性电阻传感器，恒定电流源可在该控制下连接到电阻传感器 程序控制装置，控制用于在初始时刻检测和存储电阻传感器上的初始电压降的装置，以及连接恒定电流源之后的特定时间的测量电压，以及用于通过减去 测量电压从初始电压和在这种情况下反转差异形成对应于液位的显示电压。 这些电阻传感器中的几个被布置在容器内的不同级别，传感器可以由程序控制装置一个接一个地连接到恒流源和用于评估它们的电压降的装置。 固定值存储器提供固定值电压的供应，其中一个电压分别可选地取决于当时有效的相应电阻传感器，并且加法器可应用于形成显示电压，其中评估电压为模拟 到有源电阻传感器的浸入深度和对应于该电阻传感器的高度的固定值电压。