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Device for measuring fill level of liquid in container with ultrasonic sensor

A technology for ultrasonic sensors, filling levels, applications in measuring devices, material analysis using acoustic/ultrasonic/infrasonic waves, sound-generating instruments, etc.

Active Publication Date: 2018-04-03
HELLA KGAA HUECK & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fill level in the sound absorbing cup corresponds here to the filling level outside the sound absorbing cup, however, here fluctuations, for example caused by acceleration or driving in curves, are delayed

Method used

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  • Device for measuring fill level of liquid in container with ultrasonic sensor
  • Device for measuring fill level of liquid in container with ultrasonic sensor

Examples

Experimental program
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Embodiment Construction

[0017] exist figure 1 The device 1 is shown in a cutaway side view. The device 1 essentially consists of a combination of a sound absorbing cup 6 and a base element 4 , which in the present embodiment is designed as a flange 19 . An ultrasonic sensor 5 is integrated in the base element 4 or arranged thereon. The base element 4 is designed here as a flange 19 , it is also evident that the flange 19 protrudes laterally beyond the structural surface of the sound absorbing cup 6 in order to form the fastening region here. A measuring tube 9 extends over the ultrasonic sensor 5 , in which measuring tube 9 the actual measurement takes place. The ultrasonic sensor 5 emits ultrasonic waves which propagate upwards in the measuring tube 9 , are reflected at the interface liquid / air and are then picked up again by the ultrasonic sensor 5 as reflected ultrasonic waves. From the travel time of the ultrasound waves, the distance of the ultrasound sensor 5 to the interface and thus the fi...

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PUM

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Abstract

In a device for measuring a fill level of a liquid in a container with an ultrasonic sensor which is arranged on a floor element, wherein a damping cup with a measuring tube is assigned to the ultrasonic sensor, the damping cup has an external housing and an internal housing. The internal housing contains the measuring tube, and either the internal housing has outwardly protruding contact elementsthat lie against the inside of the external housing or the external housing has outwardly protruding contact elements that lie against the outside of the internal housing. The external housing is also provided and designed for pluggable mounting of the internal housing, and a channel is formed between the internal housing and the external housing.

Description

technical field [0001] The invention relates to a device for measuring the fill level of a liquid in a container with an ultrasonic sensor arranged on a bottom element, wherein the ultrasonic sensor is associated with a sound-absorbing cup with a measuring tube. Background technique [0002] A device of this type for measuring the fill level of liquids is known, for example, from DE 10 2014 009 543 A1. The device is in particular a container for motor oil (Motoröl, also sometimes called motor oil). This device is required especially in motor vehicles. In order to detect the oil level (Ölstand) in the container, ultrasonic waves are emitted from the bottom of the device, reflected at the interface of the oil to the air above it and picked up again by the ultrasonic sensor. From the travel time of the detected ultrasonic waves, the fill level in the container can then be determined. In the case of a running engine, in particular in a motor vehicle, however, the fill level o...

Claims

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Application Information

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IPC IPC(8): G01F23/296F01M11/12
CPCF01M11/12G01F23/2962G01H3/00G01F23/2968G01N29/221G01N29/223G10K11/004
Inventor T.尼曼J.帕洛克斯
Owner HELLA KGAA HUECK & CO
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